CN110475374A - A kind of communication means and communication device - Google Patents

Abstract

The present application provides a communication method and a communication device. The method includes: a terminal device determines a first random access parameter, and the first random access parameter includes the number of repeated transmissions of the random access procedure message 3 and/or the first scaling factor, the first scaling factor is the scaling factor of the transport block corresponding to the random access procedure message three; the terminal device sends the random access procedure message three to the network device according to the first random access parameter. The communication method in the embodiment of the present application helps to improve the uplink coverage performance of message three of the random access procedure.

Description

A communication method and communication device

technical field

The present application relates to the communication field, and more specifically, to a communication method and a communication device.

Background technique

In the long term evolution (Long Term Evolution, LTE), the terminal device can achieve the following goals through the random access (RandomAccess, RA) process: obtain uplink synchronization, and obtain a unique identifier C-RNTI (Cell RadioNetwork Temporary Identifier, cell radio network Temporary ID).

There are two different ways of random access process: based on contention (Contention based RA, CBRA) and based on non-contention (Non-Contention based or Contention-Free based, CFRA). Incoming process message 3 (Msg3) carries identification information for conflict resolution, thereby solving the problem of competition among different terminal devices.

Usually, the transmit power of the terminal device is smaller than that of the network device. Especially for the terminal equipment at the edge of the cell, it may happen that the random access procedure message 2 (Msg2) sent by the network equipment can be received, but the Msg3 cannot be sent successfully. Meanwhile, in LTE, since the adaptive retransmission times of Msg3 defined in the protocol are smaller than the normal physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) adaptive retransmission times, the uplink coverage performance of Msg3 is poor.

Contents of the invention

In view of this, the present application provides a communication method and a communication device in order to improve the uplink coverage performance of message three (Msg3) of the random access procedure.

In a first aspect, a communication method is provided, and the method includes:

The terminal device determines a first random access parameter, where the first random access parameter includes the number of repeated transmissions of the random access procedure message 3 and/or a first scaling factor, where the first scaling factor is the random access procedure message 3 corresponding to The scaling factor of the transmission block;

The terminal device sends the random access procedure message three to the network device according to the first random access parameter.

In some possible implementation manners, the first random access parameter includes the number of repeated transmission times of the random access procedure message 3, and the terminal device sends the random access procedure message to the network device according to the first random access parameter Three, including:

The terminal device repeatedly sends the random access procedure message three to the network device.

Therefore, the communication method in the embodiment of the present application helps to improve the uplink coverage performance of the Msg3 by repeatedly sending the Msg3.

In some possible implementation manners, the first random access parameter includes the first scaling factor, and the terminal device sends the random access procedure message 3 to the network device according to the first random access parameter, including:

The terminal device sends the random access procedure message three to the network device by using the first scaling factor.

Therefore, in the communication method of the embodiment of the present application, by configuring the transport block scaling factor corresponding to Msg3, the code rate of Msg3 is reduced without changing the modulation and coding mode, which helps to improve the uplink coverage performance of Msg3.

In some possible implementation manners, the first random access parameter includes the number of repeated transmissions of the random access procedure message 3 and the first scaling factor, and the terminal device sends the network device the Random access procedure message three, including:

The terminal device uses the first scaling factor to repeatedly send the random access procedure message three to the network device.

In combination with the first aspect, in some possible implementation manners of the first aspect, the method further includes:

The terminal device receives random access procedure message 2 sent by the network device, where the random access procedure message 2 includes a second random access parameter, where the second random access parameter includes a timing advance and/or a power control parameter, the a second random access parameter is associated with the first random access parameter;

Wherein, the terminal device determines the first random access parameter, including:

The terminal device determines the first random access parameter according to the second random access parameter.

In some possible implementations, the method also includes:

The terminal device receives random access procedure message 2 and indication information sent by the network device, where the random access procedure message 2 includes second random access parameters, and the second random access parameters include timing advance and/or power control parameter, the second random access parameter is associated with a set of times of repeated transmissions and/or a set of scaling factors, and the indication information is used to indicate the number of times of repeated transmissions of the random access procedure message 3 in the set of times of repeated transmissions, and/or Or, the indication information is used to indicate the first scaling factor among the scaling factors;

Wherein, the terminal device determines the first random access parameter, including:

The terminal device determines the first random access parameter according to the second random access parameter and the indication information.

In some possible implementation manners, the set of repeated sending times includes multiple values of repeated sending times, and the set of scaling factors includes multiple scaling factors.

In combination with the first aspect, in some possible implementation manners of the first aspect, the method further includes:

The terminal device sends a random access procedure message 1 to the network device, and the format of the random access procedure message 1 is associated with the first random access parameter;

Wherein, the terminal device determines the first random access parameter, including:

The terminal device determines the first random access parameter according to the format of message one of the random access procedure.

In some possible implementations, the method also includes:

The terminal device sends a random access procedure message 1 to the network device, the format of the random access procedure message 1 is associated with a set of repeated sending times and/or a scaling factor set, and the indication information is used to indicate that in the set of repeated sending times The number of repeated transmissions of the random access procedure message 3, and/or, the indication information is used to indicate the first scaling factor among the scaling factors;

Wherein, the terminal device determines the first random access parameter, including:

The terminal device determines the first random access parameter according to the format of the first random access procedure message and the indication information.

In some possible implementation manners, the set of repeated sending times includes multiple values of repeated sending times, and the set of scaling factors includes multiple scaling factors.

In combination with the first aspect, in some possible implementation manners of the first aspect, the method further includes:

The terminal device receives random access procedure message 2 sent by the network device;

Wherein, the terminal device determines the first random access parameter, including:

The terminal device determines the first scaling factor according to the second scaling factor, where the second scaling factor is the scaling factor of the transport block corresponding to the second random access procedure message.

In some possible implementations, the method also includes:

The terminal device receives random access procedure message 2 and indication information sent by the network device;

Wherein, the terminal device determines the first random access parameter, including:

The terminal device determines the first scaling factor from the set of scaling factors corresponding to the second scaling factor according to the second scaling factor and the indication information, and the second scaling factor is the transmission block corresponding to the random access procedure message 2 scaling factor.

In some possible implementation manners, the scaling factor set includes multiple scaling factors.

With reference to the first aspect, in some possible implementation manners of the first aspect, the first scaling factor is smaller than or equal to the second scaling factor.

In combination with the first aspect, in some possible implementation manners of the first aspect, the method further includes:

Determine the time domain position of K repeated transmissions and the hybrid automatic repeat request HARQ retransmission period, K is the number of repeated transmissions, and K is a positive integer greater than or equal to 1, where the time of K repeated transmissions is less than one HARQ retransmission period.

In some possible implementation manners, the time domain positions of the K repeated transmissions are adjacent in time.

In some possible implementation manners, the time domain positions of the K repeated transmissions are not adjacent in time.

In some possible implementation manners, the time domain positions of the K repeated transmissions are predefined or configured for the network device.

In some possible implementations, the time domain position of the K repeated transmissions is the uplink (UL) or flexible (Flexible, or X) part

In some possible implementations, the network device is configured with two semi-static configuration periods X and Y, and the time domain position of the K repeated transmissions is min(X, Y), or max(X, Y), or , the uplink (UL) or flexible (Flexible, or X) part of an integer multiple of (X+Y).

In some possible implementation manners, the HARQ retransmission period is predefined; or, the HARQ retransmission period is configured by a network device.

In some possible implementation manners, the HARQ retransmission period is an integer multiple of the semi-static uplink and downlink configuration period indicated in the remaining minimum system information (RMSI) configured by the network device.

In some possible implementations, the network device is configured with two semi-static configuration periods X and Y, and the HARQ retransmission period is min(X, Y), or, max(X, Y), or, (X+ Integer multiples of Y).

It should be understood that the time for the K repeated transmissions is shorter than the HARQ retransmission period.

In combination with the first aspect, in some possible implementation manners of the first aspect, the method further includes:

The first indication information sent by the network device is received, where the first indication information is used to indicate the offset value of the time domain position of the K repeated transmissions in the HARQ cycle.

With reference to the first aspect, in some possible implementations of the first aspect, the time-domain position of the K repeated transmissions includes the time slot position of each transmission in the K repeated transmissions, and the method further includes:

In the slot position of each transmission, the symbol position of each transmission is determined.

With reference to the first aspect, in some possible implementations of the first aspect, the time domain position of the Nth repeated transmission among the K repeated transmissions conflicts with the time domain position of receiving the downlink signal or the high priority signal, or the time domain position of the Nth repeated transmission conflicts, or The time-domain position of N repeated transmissions does not conflict with the time-domain position of receiving downlink signals or high-priority signals, but the time interval between receiving the previous downlink signal or high-priority signals is not enough as a guard interval (for example, the guard interval includes Terminal equipment processing time, and/or uplink and downlink switching time, etc.), N is a positive integer greater than or equal to 1 and less than or equal to K, the method also includes:

Skip the Nth repeated sending.

In some possible implementations, the downlink signal may include downlink synchronization signal block (SS/PBCHblock), remaining minimum system information (Remaining Minimum System Information, RMSI), control resource set (Control Resource Set, CORESET), semi-static/ One or more of the downlink signal (DL) and/or the flexible (Flexible) part in the semi-persistent uplink and downlink configuration (Semi-static DL/UL).

In some possible implementations, the high-priority signal may include a physical random access channel (Physical Random Access Channel, PRACH), a physical uplink control channel (Physical Uplink Control Channel, PUCCH), an uplink monitoring reference signal (Sounding Reference Signal, SRS), one or more of reserved resources (Reserved).

In some possible implementations, the method also includes:

After skipping the Nth repeated sending, the terminal device continues to send the random access procedure message three at the next available time domain position.

In some possible implementation manners, the terminal device continues to send Msg3 on the next available uplink resource.

In some possible implementations, the available uplink resources may be uplink (UL) and/or flexible (Flexible) parts, and the available uplink resources do not conflict with downlink signals or high-priority resources, and at the same time, the uplink resources and the previous A downlink signal time interval is greater than or equal to a guard interval (for example, the guard interval includes terminal device processing time, and/or uplink and downlink switching time, etc.).

In some possible implementation manners, the terminal device continues to send the random access procedure message three on the next available uplink time slot.

In combination with the first aspect, in some possible implementation manners of the first aspect, the method further includes:

After the K times of repeated sending, the random access procedure message 3 is sent again.

In some possible implementations, the terminal device skips M repeated transmissions during the K repeated transmissions, where M is a positive integer greater than or equal to 1 and less than or equal to K, and the method further includes:

After the K times of repeated sending, the random access procedure message three is sent M times.

In combination with the first aspect, in some possible implementation manners of the first aspect, the method further includes:

receiving second indication information sent by the network device, where the second indication information is used to indicate that the random access procedure message 3 is successfully received;

Stop sending the random access procedure message three according to the second indication information.

In the communication method of the embodiment of the present application, after the network device successfully receives the Msg3, it sends the receiving success indication information to the terminal device, which helps to avoid waste of resources and reduce uplink transmission delay.

In a second aspect, a communication method is provided, and the method includes:

The network device determines a first random access parameter, where the first random access parameter includes the number of repeated transmissions of the random access procedure message 3 and/or a first scaling factor, where the first scaling factor is the random access procedure message 3 corresponding to The scaling factor of the transmission block;

The network device receives the random access procedure message three sent by the terminal device according to the first random access parameter.

With reference to the second aspect, in some possible implementations of the second aspect, the method further includes:

The network device receives random access procedure message 1 sent by the terminal device;

The network device determines a second random access parameter according to the random access procedure message one, where the second random access parameter includes a timing advance and/or a power control parameter, and the second random access parameter is the same as the first random access parameter Access parameters are associated;

Wherein, the network device determines the first random access parameter, including:

The network device determines the first random access parameter according to the second random access parameter.

In some possible implementations, the method also includes:

The network device receives random access procedure message 1 sent by the terminal device;

The network device determines a second random access parameter according to the random access procedure message 1, where the second random access parameter includes a timing advance and/or a power control parameter, and the second random access parameter is set together with the number of repeated transmissions and/or associated with a set of scaling factors;

The network device sends indication information to the terminal device, where the indication information is used to indicate the number of repeated transmissions of the third message of the random access procedure in the set of repeated transmission times, and/or, the indication information is used to indicate the scaling factor The first scaling factor in the collection.

Wherein, the network device determines the first random access parameter, including:

The network device determines the first random access parameter according to the second random access parameter and the indication information.

With reference to the second aspect, in some possible implementations of the second aspect, the method further includes:

The network device receives a random access procedure message 1 sent by the terminal device, and the format of the random access procedure message 1 is associated with the first random access parameter;

Wherein, the network device determines the first random access parameter, including:

The network device determines the first random access parameter according to the format of the first random access procedure message.

In some possible implementations, the method also includes:

The network device receives the random access procedure message 1 sent by the terminal device and the indication information, the format of the random access procedure message 1 is associated with a set of repeated transmission times and/or a scaling factor set, and the indication information is used to indicate the repeated transmission The number of repeated transmission times of the third message of the random access procedure in the set of times, and/or, the indication information is used to indicate the first scaling factor in the set of scaling factors;

Wherein, the network device determines the first random access parameter, including:

The network device determines the first random access parameter according to the format of the first random access procedure message and the indication information.

With reference to the second aspect, in some possible implementations of the second aspect, the method further includes:

The network device receives random access procedure message 1 sent by the terminal device;

The network device determines a second scaling factor according to the random access process message 1, where the second scaling factor is a scaling factor of a transport block corresponding to the random access process message 2;

Wherein, the network device determines the first random access parameter, including:

The network device determines the first scaling factor according to the second scaling factor.

With reference to the second aspect, in some possible implementation manners of the second aspect, the first scaling factor is smaller than or equal to the second scaling factor.

In a third aspect, a communication method is provided, and the method includes:

The terminal device determines that the number of repeated transmissions of the random access procedure message 3 is K, where K is a positive integer greater than or equal to 1;

The terminal device repeatedly sends the random access procedure message 3 to the network device K times;

In the case where the time domain position of the Nth repeated transmission in the K times of repeated transmission conflicts with the time domain position of the received downlink signal or high priority signal, or the time domain position of the Nth repeated transmission is consistent with the time domain position of the received downlink signal or high priority signal The time domain position of the priority signal does not conflict, but the time interval between receiving the previous downlink signal or high priority signal is not enough as a guard interval (for example, the guard interval includes terminal equipment processing time, and/or uplink and downlink switching time, etc.) , skipping the Nth repeated sending, where N is a positive integer greater than or equal to 1 and less than or equal to K.

In combination with the third aspect, in some possible implementations of the third aspect, the method further includes:

After skipping the Nth repeated sending, the terminal device continues to send the random access procedure message three at the next available time domain position.

In some possible implementation manners, the terminal device continues to send Msg3 on the next available uplink resource.

In some possible implementations, the available uplink resources may be uplink (UL) and/or flexible (Flexible) parts, and the available uplink resources do not conflict with downlink signals or high-priority resources, and at the same time, the uplink resources and the previous The downlink signal time interval is greater than or equal to the guard interval (for example, the guard interval includes terminal device processing time, and/or uplink and downlink switching time, etc.).

In combination with the third aspect, in some possible implementations of the third aspect, the method further includes:

After the K times of repeated sending, the random access procedure message 3 is sent again.

In some possible implementations, the terminal device skips M repeated transmissions during the K repeated transmissions, where M is a positive integer greater than or equal to 1 and less than or equal to K, and the method further includes:

After the K times of repeated sending, the random access procedure message 3 is sent M times.

In some possible implementations, the downlink signal includes downlink synchronization signal block (SS/PBCH block), remaining minimum system information (RMSI), control resource set (Control Resource Set, CORESET), semi-static/semi-persistent uplink and downlink configuration One or more of the downlink signal (DL) and/or flexible (Flexible) part in the . The high priority signal includes one or more of Physical Random Access Channel (Physical Random Access Channel, PRACH), Physical Uplink Control Channel PUCCH, Uplink Listening Reference Signal (SRS), and Reserved.

In combination with the third aspect, in some possible implementations of the third aspect, the method further includes:

For the random access procedure message 3 that is repeatedly sent K times, frequency hopping may be used for sending.

For example, the frequency domain position of the frequency hopping transmission may be indicated in the second random access procedure message, or the frequency hopping mode may be indicated by using the frequency domain resource indication field in the second random access procedure message.

For another example, in the K repeated transmissions, a fixed frequency hopping pattern (pattern) is used, or the frequency position of the frequency hopping transmission is associated with the number of repetitions.

It should be understood that in this embodiment of the present application, frequency hopping transmission refers to adopting different frequency domain positions when the random access procedure message 3 is repeatedly transmitted each time, which helps to obtain frequency domain diversity gain.

In a fourth aspect, a communication device is provided, and the communication device can be used to perform operations of the terminal device in the first aspect and the third aspect and any possible implementation manners thereof. Specifically, the communications apparatus may include a module unit configured to perform various operations of the terminal device in the first aspect and the third aspect and any possible implementation manners thereof.

In a fifth aspect, a communication device is provided, and the communication device may be used to perform operations of the network device in the second aspect and any possible implementation manners thereof. Specifically, the communications apparatus may include a module unit configured to perform various operations of the network device in the above second aspect and any possible implementation manners thereof.

According to a sixth aspect, a terminal device is provided, and the terminal device includes: a processor, a transceiver, and a memory. Wherein, the processor, the transceiver and the memory communicate with each other through an internal connection path. The memory is used to store instructions, and the processor is used to execute the instructions stored in the memory. When the processor executes the instructions stored in the memory, the execution causes the terminal device to execute any method in the first aspect and the third aspect and any possible implementation thereof, or the execution causes the The terminal device implements the communication apparatus provided in the fourth aspect.

According to a seventh aspect, a network device is provided, and the network device includes: a processor, a transceiver, and a memory. Wherein, the processor, the transceiver and the memory communicate with each other through an internal connection path. The memory is used to store instructions, and the processor is used to execute the instructions stored in the memory. When the processor executes the instruction stored in the memory, the execution causes the network device to execute any method in the second aspect and any possible implementation thereof, or the execution causes the network device to implement the first aspect The communication device provided by the five aspects.

In an eighth aspect, a chip system is provided, including a memory and a processor, the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the system installed with the chip system The communication device executes any method in the foregoing first aspect to the third aspect and possible implementation manners thereof.

In a ninth aspect, a computer program product is provided, the computer program product comprising: computer program code, when the computer program code is used by a communication unit, a processing unit or a transceiver of a communication device (for example, a network device or a terminal device) . When the processor is running, the communication device is made to execute any method in the first aspect to the third aspect and possible implementation manners thereof.

In a tenth aspect, a computer-readable storage medium is provided, the computer-readable storage medium stores a program, and the program enables a communication device (for example, a network device or a terminal device) to execute the above first to third aspects and Any of its possible implementations.

In the eleventh aspect, a computer program is provided. When the computer program is executed on a certain computer, it will enable the computer to implement any method in the above-mentioned first to third aspects and their possible implementation manners. .

In a twelfth aspect, a communication system is provided, and the communication system includes the communication device provided in the fourth aspect, and/or, the communication device provided in the fifth aspect; or,

The communication system includes the terminal device provided in the sixth aspect, and/or the network device provided in the seventh aspect.

Description of drawings

FIG. 1 is a schematic diagram of a communication system provided by an embodiment of the present application.

FIG. 2 is a schematic diagram of a network architecture provided by an embodiment of the present application.

FIG. 3 is a schematic diagram of another network architecture provided by an embodiment of the present application.

Fig. 4 is a schematic flow chart of four steps for a terminal device and a network device to complete random access.

Fig. 5 is a schematic flowchart of a communication method provided by an embodiment of the present application.

FIG. 6 is a schematic diagram of time-domain positions of K repeated transmissions.

Fig. 7 is another schematic diagram of time-domain positions of K repeated transmissions.

FIG. 8 is a schematic flowchart of another communication method provided by an embodiment of the present application.

Fig. 9 is a schematic block diagram of a communication device provided by an embodiment of the present application.

Fig. 10 is another schematic block diagram of a communication device provided by an embodiment of the present application.

FIG. 11 is a schematic block diagram of a terminal device provided by an embodiment of the present application.

Fig. 12 is a schematic block diagram of a network device provided by an embodiment of the present application.

Detailed ways

Below, some terms in this application are explained:

1) Terminal equipment, also known as user equipment (UE), mobile station (mobile station, MS), mobile terminal (mobile terminal, MT), etc., is a device that provides voice/data connectivity to users , for example, handheld devices with wireless connectivity, vehicle-mounted devices, etc. At present, examples of some terminals are: mobile phone (mobile phone), tablet computer, notebook computer, palmtop computer, mobile internet device (mobile internet device, MID), wearable device, virtual reality (virtual reality, VR) device, augmented reality ( Augmented reality (AR) equipment, wireless terminals in industrial control, wireless terminals in selfdriving, wireless terminals in remote medical surgery, wireless terminals in smart grid , wireless terminals in transportation safety, wireless terminals in smart city, wireless terminals in smart home, etc.

2). The network device is a device in the wireless network, for example, a radio access network (radio access network, RAN) node that connects the terminal to the wireless network. Currently, examples of some RAN nodes are: gNB, transmission reception point (transmission reception point, TRP), evolved Node B (evolved Node B, eNB), radio network controller (radio network controller, RNC), node B (Node B, NB), base station controller (base station controller, BSC), base transceiver station (base transceiver station, BTS), home base station (for example, homeevolved NodeB, or home Node B, HNB), base band unit (base band unit, BBU ), or a wireless fidelity (wireless fidelity, Wifi) access point (access point, AP), etc. In a network structure, the network device may include a centralized unit (centralized unit, CU) node, or a distributed unit (distributed unit, DU) node, or a RAN device including a CU node and a DU node.

The network device in the embodiment of the present application may be a device for communicating with a terminal device, and the network device may be a global system of mobile communication (Global System of Mobile communication, GSM) system or a code division multiple access (Code Division Multiple Access, CDMA) The base station (Base Transceiver Station, BTS), also can be the base station (NodeB, NB) in the wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, can also be the evolved base station (Evolutional NodeB) in the LTE system , eNB or eNodeB), it can also be a wireless controller in a cloud radio access network (Cloud Radio Access Network, CRAN) scenario, or the network device can be a relay station, access point, vehicle-mounted device, wearable device, and future 5G The embodiment of the present application does not limit the network equipment in the network or the network equipment in the future evolved PLMN network.

Before introducing the embodiments of the present application, first briefly introduce some related concepts in HARQ.

HARQ process (HARQ process): HARQ uses stop-and-wait protocol (stop-and-wait protocol) to send data. In the stop-and-wait protocol, after sending a transport block (Transport Block, TB), the sender stops to wait for feedback information, and confirms the TB with positive (ACK) or negative (NACK). But the sender stops and waits for confirmation after each transmission, resulting in very low throughput. Therefore, Long Term Evolution (LTE) and NR (New Radio) of the 5G communication system stipulate that terminal equipment can use multiple parallel HARQ processes: when one HARQ process is waiting for confirmation information, the sender can use another The HARQ process continues to send data.

Redundancy Version (Redundancy Version, RV): used to indicate the redundancy version used for transmission, and its value range is 0-3.

Modulation and Coding Scheme (MCS): Downlink Control Information (DCI) in LTE uses a 5-bit MCS index (0-31) to indicate the modulation and coding scheme used for the current transmission, and affects To TB size (TB Size, TBS) selection. The MCS has a total of 32 combinations, of which 3 combinations (indexed 29-31) are reserved, and these 3 combinations are only used for retransmission.

It should also be noted that, in the embodiment of the present application, "protocol" may refer to standard protocols in the communication field, for example, it may include LTE protocol, NR protocol and related protocols applied in future communication systems, which is not limited in this application .

It should also be noted that, in the embodiments shown below, the first, second, etc. are only for the convenience of distinguishing different objects, and shall not constitute any limitation to the present application.

It should also be noted that "and/or" describes the association relationship of associated objects, indicating that there can be three types of relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, and B exists alone These three situations. The character "/" generally indicates that the contextual objects are an "or" relationship. "At least one" means one or more than one; "at least one of A and B", similar to "A and/or B", describes the association relationship of associated objects, indicating that there can be three relationships, for example, A and B At least one of them can mean: A alone exists, A and B exist simultaneously, and B exists alone.

FIG. 1 is a schematic diagram of a communication system 100 provided by an embodiment of the present application. As shown in FIG. 1, a terminal device 130 accesses a wireless network to obtain services of an external network (such as the Internet) through the wireless network, or Communicate with other end devices. The wireless network includes a RAN110 and a core network (CN) 120, wherein the RAN110 is used to connect the terminal equipment 130 to the wireless network, and the CN120 is used to manage the terminal equipment and provide a gateway for communication with the external network.

It should be understood that the method for transmitting data provided in this application may be applicable to a wireless communication system, for example, the wireless communication system 100 shown in FIG. 1 . There is a wireless communication connection between two communication devices in the wireless communication system, and one communication device in the two communication devices may correspond to the terminal device 130 shown in FIG. 1 , for example, it may be the terminal device 130 in FIG. 1 , may also be a chip configured in the terminal device 130; the other communication device in the two communication devices may correspond to the RAN110 shown in FIG. 1, for example, may be the RAN110 in FIG. 1, or may be configured in chip in RAN110.

Hereinafter, without loss of generality, the embodiment of the present application will be described in detail by taking an interaction process between a terminal device and a network device as an example. It can be understood that any terminal device in the wireless communication system can communicate with one or more network devices having wireless communication connections based on the same method. This application does not limit this.

FIG. 2 is a schematic diagram of a network architecture provided by an embodiment of the present application. As shown in FIG. 2 , the network architecture includes CN equipment and RAN equipment. The RAN equipment includes a baseband device and a radio frequency device, where the baseband device can be implemented by one node or multiple nodes, and the radio frequency device can be implemented independently from the baseband device, or can be integrated into the baseband device, or part of the remote part Integrated in the baseband unit. For example, in a Long Term Evolution (LTE) communication system, a RAN device (eNB) includes a baseband device and a radio frequency device, wherein the radio frequency device can be arranged remotely relative to the baseband device, such as a remote radio unit (remote radio unit, The RRU) is arranged remotely relative to the BBU.

Communication between RAN equipment and terminal equipment follows a certain protocol layer structure. For example, the control plane protocol layer structure may include a radio resource control (radio resource control, RRC) layer, a packet data convergence protocol (packetdata convergence protocol, PDCP) layer, a radio link control (radio link control, RLC) layer, a media access Functions of protocol layers such as control (media access control, MAC) layer and physical layer. The user plane protocol layer structure may include the functions of the PDCP layer, the RLC layer, the MAC layer, and the physical layer; in one implementation, the PDCP layer may also include a service data adaptation protocol (service data adaptation protocol, SDAP) layer .

The functions of these protocol layers can be implemented by one node, or can be implemented by multiple nodes; for example, in an evolution structure, the RAN device can include a centralized unit (CU) and a distributed unit (DU), multiple A DU can be centrally controlled by a CU. As shown in Figure 2, CU and DU can be divided according to the protocol layer of the wireless network. For example, the functions of the PDCP layer and above protocol layers are set in the CU, and the protocol layers below the PDCP, such as the functions of the RLC layer and the MAC layer, are set in the DU.

The RAN device can implement radio resource control (radio resource control, RRC), packet data convergence layer protocol (packet data convergence protocol, PDCP), radio link control (radiolink control, RLC), and media access control (Media Access Control) by one node. Access Control, MAC) and other protocol layer functions; or the functions of these protocol layers can be realized by multiple nodes; for example, in an evolution structure, the RAN device can include a centralized unit (centralized unit, CU) and a distributed unit (distributed unit, DU), multiple DUs can be centrally controlled by one CU. As shown in Figure 2, CU and DU can be divided according to the protocol layer of the wireless network. For example, the functions of the PDCP layer and above protocol layers are set in the CU, and the protocol layers below the PDCP, such as the functions of the RLC layer and the MAC layer, are set in the DU.

The division of this protocol layer is just an example, and it can also be divided in other protocol layers, for example, in the RLC layer, the functions of the RLC layer and above protocol layers are set in the CU, and the functions of the protocol layers below the RLC layer are set in the DU; Or, divide in a certain protocol layer, for example, set some functions of the RLC layer and the functions of the protocol layers above the RLC layer in the CU, and set the remaining functions of the RLC layer and the functions of the protocol layers below the RLC layer in the DU. In addition, it can also be divided in other ways, for example, according to the time delay, the functions whose processing time needs to meet the time delay requirement are set in the DU, and the functions that do not need to meet the time delay requirement are set in the CU.

In addition, the radio frequency device can be remote, not placed in the DU, or integrated in the DU, or partially remote and partially integrated in the DU, without any limitation here.

Please continue to refer to FIG. 3. FIG. 3 shows a schematic diagram of another network architecture provided by the embodiment of the present application. Compared with the architecture shown in FIG. 2, the control plane (CP) and user plane (UP) of the CU can also be Separation is achieved by dividing them into different entities, which are the control plane CU entity (CU-CP entity) and the user plane CU entity (CU-UP entity).

In the above network architecture, the signaling generated by the CU can be sent to the terminal device through the DU, or the signaling generated by the terminal device can be sent to the CU through the DU. The DU can directly transmit the signaling to the terminal device or CU through protocol layer encapsulation without analyzing the signaling. In the following embodiments, if the signaling is transmitted between the DU and the terminal device, at this time, the sending or receiving of the signaling by the DU includes this scenario. For example, signaling at the RRC or PDCP layer will eventually be processed as signaling at the PHY layer and sent to the terminal device, or converted from received signaling at the PHY layer. Under this framework, the signaling at the RRC or PDCP layer can also be considered to be sent by the DU, or sent by the DU and the radio frequency.

In the above embodiments, CUs are classified as network devices on the RAN side. In addition, CUs may also be classified as network devices on the CN side, which is not limited here.

The devices in the following embodiments of the present application may be located in the terminal device according to the functions they implement. When the above CU-DU structure is adopted, the network device may be a CU node, or a DU node, or a RAN device including a CU node and a DU node.

Figure 4 shows a schematic flow chart of four-step random access between terminal equipment and network equipment. It should be understood that Figure 4 takes CBRA in NR as an example, and the process includes:

S210, the terminal device sends a random access procedure message one (Msg1) to the network device.

It should be understood that the random access procedure message one (Msg1) may also be called a random access request message or a random access preamble (preamble).

The main function of the preamble is to tell the network device that there is a random access request, and enable the network device to estimate the transmission delay between other terminal devices, so that the network device can calibrate the uplink timing, and pass the calibration information through the random access process in S220 The second message (Msg2) notifies the terminal device.

Each cell has 64 available preamble sequences, and the terminal device can select a preamble (CFRA) to transmit on a physical random access channel (Physical Random Access Channel, PRACH). The network device informs the terminal device of the time-frequency resource set of the PRACH that the current cell can use to transmit the preamble through a system message. When the terminal device initiates random access, it also needs to select a PRACH resource to send the preamble.

S220, the network device sends a random access procedure message 2 (Msg2) to the terminal device.

It should be understood that the random access procedure message two (Msg2) may also be called a random access response message.

Specifically, after receiving the preamble sent by the terminal device, the network device sends a corresponding random access response (RA response, RAR) to the terminal device, which may include the transmission of random access process message three (Msg3) in S230 Time domain and frequency domain information, used for the modulation and coding method of Msg3, preamble identification, timing advance (TA) information, initial uplink grant (Uplink grant, UL grant) information, can also carry the identification information of the terminal equipment, for CBRA, after the terminal device receives the RAR, it judges whether the preamble identifier in the RAR is the same as the preamble sent in S210. If it is the same, it considers that the RAR reception is successful; otherwise, it considers that the RAR reception fails, and the terminal device can re-trigger the RA process.

S230, the terminal device sends a random access procedure message three (Msg3) to the network device.

Specifically, the terminal device sends data on the corresponding uplink transmission resource through the Physical Uplink Shared Channel (PUSCH) according to the UL grant information indicated in the RAR, which may include a radio resource control layer (Radio Resource Control, RRC) message, the identification information of the terminal device, such as the C-RNTI information of the terminal device, the recovery identifier (Resume ID) or the inactive identifier (Inactive RNTI, I-RNTI) of the terminal device, wherein the Resume ID or I-RNTI The RNTI is assigned to the terminal device by the network device, and the terminal device reports the identifier for purposes such as identifying the identity of the terminal device and related configuration information by the network device.

S240, the network device sends a random access procedure message four (Msg4) to the terminal device.

Specifically, since the terminal device will carry the identification information of the terminal device in S230, in the conflict resolution mechanism, the network device will carry the identification information of the terminal device through Msg4 in S240 to designate the terminal device that wins the conflict resolution , and other terminal devices that do not win the conflict resolution will re-initiate random access.

In the embodiment of the present application, mainly aiming at the problem of low uplink coverage performance of Msg3 in S230, the uplink coverage performance of Msg3 is improved by repeatedly sending the Msg3 and/or sending Msg3 by using a scaling factor.

Fig. 5 is a schematic flowchart of a communication method 300 provided by an embodiment of the present application. As shown in Fig. 5 , the subject of execution of the method 300 may be a terminal device, or a chip or device used for the terminal device (hereinafter referred to as The execution subject is a terminal device as an example for description), the method 300 includes:

S310. The terminal device determines a first random access parameter, where the first random access parameter includes the number of repeated transmissions of random access procedure message 3 and/or a first scaling factor, where the first scaling factor is the random access procedure message three scaling factors for the corresponding transport block;

S320. The terminal device sends the random access procedure message three to the network device according to the first random access parameter.

Optionally, the first random access parameter includes the number of repeated transmissions of the random access procedure message 3, and the terminal device sends the random access procedure message 3 to the network device according to the first random access parameter, including:

The terminal device repeatedly sends the random access procedure message three to the network device.

It should be understood that in the embodiment of the present application, repeated transmission means that the terminal device performs multiple transmissions for the same transmission block; repeated transmission can select a data redundancy version different from the previous transmission, for example, when two repeated transmissions are performed, the first Select RV1 for one send, and select RV2 for the second send.

Specifically, before sending Msg3, the terminal device determines the number of repeated transmissions of the Msg3 (for example, the number of repeated transmissions is K times, and K is a positive integer greater than or equal to 1), then the terminal device can perform K repeated sends

The communication method in the embodiment of the present application helps to improve the uplink coverage performance of the Msg3 by repeatedly sending the Msg3.

Optionally, the first random access parameter includes the first scaling factor, and the terminal device sends the random access procedure message 3 to the network device according to the first random access parameter, including:

The terminal device sends the random access procedure message three to the network device by using the first scaling factor.

In the embodiment of the present application, the scaling factor (scaling factor, sf) is a value less than or equal to 1. When determining the size of the transmission block, the scaling factor is applied to transmit less information bits on the same number of resources to improve reliability. the goal of. For example, after determining the scaling factor sf, the terminal device calculates N_info through formula (1):

N_info=sf*N_re*R*Q_m*v (1)

Wherein, N_re is the number of resource elements allocated by the network device to the terminal device, Q_m is the modulation order, R is the code rate, and v is the number of layers. N_info is an intermediate variable that determines the size of the transport block.

After determining the N_info, the terminal device determines the final Msg3 transmission block size, encapsulates the Msg3 according to the determined Msg3 transmission block size, and sends the encapsulated Msg3 to the network device.

Specifically, before sending the Msg3, the terminal device determines a first scaling factor for sending the Msg3, and the terminal device uses the first scaling factor to send the Msg3.

In the communication method of the embodiment of the present application, by configuring the transport block expansion factor corresponding to Msg3, the code rate of Msg3 is reduced without changing the modulation and coding mode, which helps to improve the uplink coverage performance of Msg3.

Optionally, the first random access parameter includes the number of repeated transmissions of the random access procedure message 3 and the first scaling factor, and the terminal device sends the random access procedure message to the network device according to the first random access parameter News three, including:

The terminal device uses the first scaling factor to repeatedly send the random access procedure message three to the network device.

Specifically, the terminal device may use the first scaling factor to send the Msg3 in each sending process of the repeated sending process on the basis of repeated sending.

The communication method in the embodiment of the present application helps to improve the uplink coverage performance of the Msg3.

Optionally, the method 300 also includes:

The network device determines the first random access parameter.

Specifically, the network device may determine the first random access parameter before receiving the Msg3, and correctly decode the Msg3 according to the first random access parameter after receiving the Msg3.

Optionally, the method also includes:

S301. The terminal device sends a random access process message 1 to the network device, where the format of the random access process message 1 is associated with the first random access parameter;

Wherein, the terminal device determines the first random access parameter, including:

The terminal device determines the first random access parameter according to the format of message one of the random access procedure.

Optionally, the method 300 also includes:

The network device determines the first random access parameter according to the format of the first random access procedure message.

It should be understood that the association between the format of the random access procedure message 1 and the first random access parameter may refer to the correspondence between the format of the preamble and the first random access parameter, or may refer to the format of the preamble There is a mapping relationship with the first random access parameter.

For example, the repeated sending times are associated with the format of the preamble, different types of preamble formats may be associated with the same or different repeated sending times, as shown in Table 1.

Table 1 Correspondence between the number of repeated transmissions and the format of the preamble

It should be understood that in this embodiment of the present application, the association between the number of repeated sending times and the format of the preamble is not limited to a table, and the association between the number of repeated sending times and the preamble can also be established in other ways.

It should also be understood that the embodiment of the present application does not limit the specific number of repeated transmissions corresponding to each format, and the number of repeated transmissions needs to be greater than or equal to 1.

It should also be understood that the number of repeated transmissions is the maximum number of repeated transmissions of the Msg3, and the network device may instruct the terminal device to stop sending in advance if the Msg3 has been successfully demodulated before the terminal device sends the maximum number of repeated transmissions.

For example, when the format of the preamble is C0, the terminal device can determine that the number of repeated transmissions of the Msg3 is 2, and the terminal device can repeatedly send the Msg3 twice.

For another example, the format of the random access procedure message 1 is associated with the first scaling factor, and the formats of different types of preambles may be associated with the same or different first scaling factors, as shown in Table 2.

Table 2 Correspondence between the first scaling factor and the format of the preamble

random access preamble first scaling factor random access preamble first scaling factor long sequence - 0 1/2 A3 or A3/B3 1/8 long sequence-1 1/4 B1 1 long sequence-2 1/8 B4 1/8 long sequence-3 1/2 C0 1/4 A1 or A1/B1 1 C2 1/8 A2 or A2/B2 1/2

It should be understood that the association relationship between the first scaling factor and the format of the preamble in the embodiment of the present application is not limited to a table, and the association relationship between the first scaling factor and the preamble may also be established in other ways.

It should also be understood that the embodiment of the present application does not limit the value of the first scaling factor corresponding to each format, and the value of the first scaling factor may be less than or equal to 1.

For example, when the format of the preamble is C0, the terminal device may determine that the first scaling factor corresponding to the Msg3 is 1/4, and the terminal device may use the scaling factor to send the Msg3.

For another example, Table 1 and Table 2 can be combined. When the format of the preamble is C0, the terminal device can determine that the number of repeated transmissions of the Msg3 is 2 and the corresponding first scaling factor is 1/4. The terminal device can use The scaling factor repeatedly sends the Msg3 twice to the network device.

Optionally, the method 300 also includes:

The terminal device sends a random access procedure message 1 to the network device, the format of the random access procedure message 1 is associated with a set of repeated sending times and/or a scaling factor set, and the indication information is used to indicate that in the set of repeated sending times The number of repeated transmissions of the random access procedure message 3, and/or, the indication information is used to indicate the first scaling factor among the scaling factors;

Wherein, the terminal device determines the first random access parameter, including:

The terminal device determines the first random access parameter according to the format of the first random access procedure message and the indication information.

For example, in the embodiment of the present application, the format of the preamble may also correspond to one or more candidate repetition times, as shown in Table 3.

Table 3 Correspondence between the set of repeated sending times and the format of the preamble

Optionally, the network device may use the indication information to indicate a specific number of repetitions in the candidate set, for example, the network device may use 1 bit to indicate a specific value in the number of repeated transmissions of two candidates.

It should be understood that the indication manner may be included in one or more of a system message (SI), a minimum remaining system message (RMSI), other system messages, a synchronization message block, and Msg2.

It should be understood that the embodiment of the present application does not limit the specific value and number of repeated transmissions, nor does it limit the number of bits used by the network device for indication.

For example, when the format of the preamble is C0, the terminal device can determine whether the number of repeated sending of the Msg3 is 1 or 2 through the indication information.

For example, in the embodiment of the present application, the format of the preamble may also correspond to one or more candidate scaling factors, as shown in Table 4.

Table 4 Correspondence between the first scaling factor and the format of the preamble

random access preamble first scaling factor random access preamble first scaling factor long sequence - 0 {1,1/2} A3 or A3/B3 {1,1/8} long sequence-1 {1,1/4} B1 {1,1/2} long sequence-2 {1,1/8} B4 {1,1/8} long sequence-3 {1,1/2} C0 {1,1/4} A1 or A1/B1 {1,1/2} C2 {1,1/8} A2 or A2/B2 {1,1/4}

Optionally, the network device may use the indication information to indicate the first scaling factor among multiple candidate scaling factors. For example, the network device may use 1 bit to indicate the first scaling factor among the two candidate scaling factors.

It should be understood that the indication manner may be included in one or more of a system message (SI), a minimum remaining system message (RMSI), other system messages, a synchronization message block, and Msg2.

It should be understood that the embodiment of the present application does not limit the specific value and number of scaling factors, nor does it limit the number of bits used by the network device for indication.

For example, when the format of the preamble is C0, the terminal device may determine whether the first scaling factor corresponding to the Msg3 is 1 or 1/4 through the indication information.

For another example, Table 3 and Table 4 can be combined. When the format of the preamble is C0, the terminal device can determine from the indication information that the first scaling factor corresponding to the Msg3 is 1/4, and the number of repeated transmissions of the Msg3 is 2, then the terminal device uses the first scaling factor to repeatedly send the Msg3 to the network device twice.

In some possible implementation manners, the embodiment of the present application also provides a communication method, the communication method includes:

The network device sends a downlink signal to the terminal device, and the terminal device receives the downlink signal sent by the network device;

The terminal device estimates according to the downlink signal, and determines a first random access parameter, where the first random access parameter includes the number of repeated transmissions of the random access procedure message 3 and/or a first scaling factor, where the first scaling factor is The scaling factor of the transport block of the random access procedure message 3, the first random access parameter is associated with the random access preamble;

The terminal device determines a first random access preamble according to the first random access parameter, where the first random access parameter corresponds to the first random access preamble;

The terminal device sends the first random access preamble to the network device, and the network device receives the first random access preamble sent by the terminal device.

It should be understood that the random access preamble may also be called Msg1.

It should also be understood that the association between the first random access parameter and the random access preamble may also be understood as the association between the first random access parameter and the identification information (Random Access Procedure Identifier, RAPID) of the random access preamble. For example, the association between RAPID and repetitions is shown in the table below:

Table 5 Correlation between RAPID and number of repetitions

RAPID repeat times 0～A 1 A+1～B 2 B+1～C 3 … …

A, B, and C in the table are a division (grouping) of all available preamble sequences. The number of repetitions may also be the maximum number of repetitions. Alternatively, each packet corresponds to multiple times of repetition, and the network device may provide an additional indication in Msg2.

It should also be understood that the downlink information includes one or more of a synchronization signal block SSB, a channel state information reference signal CSI-RS, a demodulation reference signal DMRS and the like.

Optionally, the number of repeated transmissions of the Msg3 and/or the first scaling factor of the transport block of the Msg3 may be associated with the random access preamble. For example, the random access preamble is divided into multiple groups, and each group is associated with a different number of repeated transmissions and/or a first scaling factor.

Optionally, the network device may also determine the first random access parameter, and notify the terminal device before the random access procedure. For example, the random access procedure may be triggered through the PDCCH, and the used first random access parameter is indicated in the downlink control information DCI. Alternatively, the network device instructs the terminal device to identify information (Random Access Procedure Identifier, RAPID) of a random access preamble used for random access, where the RAPID has the association relationship with the first random access.

It should be understood that since the first scaling factor can be used to calculate the size of the transport block of Msg3, the random access preamble can also be divided into multiple groups, and each group is associated with a different number of repeated transmissions and/or the size of the transport block of Msg3.

The terminal device determines the number of repeated transmissions and/or the first scaling factor according to downlink signal estimation. The terminal device selects a preamble in the corresponding packet according to the number of repeated transmissions and/or the first scaling factor and/or the transport block size, and sends the preamble.

Optionally, the method also includes:

The network device determines, according to the received first random access preamble sequence, the number of repeated transmissions of the random access procedure message three, and allocates corresponding resources in the random access procedure message two.

Optionally, the method also includes:

The network device determines the first scaling factor of the transport block of the random access procedure message three according to the received first random access preamble sequence.

Optionally, the method 300 also includes:

S302. The terminal device receives a second random access procedure message sent by the network device, where the second random access procedure message includes a second random access parameter, and the second random access parameter includes a timing advance and/or a power control parameter , the second random access parameter is associated with the first random access parameter;

Wherein, the terminal device determines the first random access parameter, including:

The terminal device determines the first random access parameter according to the second random access parameter.

For example, in the example of this application, the power control parameter can be associated with the number of repetitions, as shown in Table 6:

Table 6 Correspondence between the number of repeated transmissions and power control parameters

Power Control Parameters (Maximum) Repeat Sending Times 0 1 1 1 2 1 3 1 4 2 5 2 6 2 7 3

Optionally, the network device may use the indication information to indicate the first repetition number among multiple candidate repetition numbers. For example, the network device may use 1 bit to indicate the first repetition number among the two candidate repetition numbers.

It should be understood that the indication manner may include one or more of a system message (SI), a minimum remaining system message (RMSI), other system messages, a synchronization message block, and Msg2.

It should be understood that the embodiment of the present application does not limit the specific number and number of repetitions, nor does it limit the number of bits used by the network device for indication.

It should also be understood that in the embodiment of the present application, the number of repeated transmissions may also be associated with the power adjustment value corresponding to the power control parameter, as shown in Table 7:

Table 7 Correspondence between the number of repeated transmissions and the power adjustment value

For another example, in the example of this application, the power control parameter can be associated with the scaling factor, as shown in Table 8:

Table 8 Correspondence between the first scaling factor and power control parameters

Power Control Parameters first scaling factor 0 1 1 1 2 1 3 1 4 1/2 5 1/2 6 1/4 7 1/8

Optionally, the network device may use the indication information to indicate the first scaling factor among multiple candidate scaling factors. For example, the network device may use 1 bit to indicate the first scaling factor among the two candidate scaling factors.

It should be understood that the indication manner may include one or more of a system message (SI), a minimum remaining system message (RMSI), other system messages, a synchronization message block, and Msg2.

It should be understood that the embodiment of the present application does not limit the specific value and number of scaling factors, nor does it limit the number of bits used by the network device for indication.

Optionally, the number of repeated transmissions and/or the first scaling factor may be associated with a random access procedure target preamble received power or preamble received power. For example, different target preamble received power/preamble received power values are associated with one or more repetition times and/or scaling factors. Optionally, the network device may indicate multiple candidate repetition times and/or scaling factors through additional indication information.

For example, the network device may determine whether Msg3 performs repeated transmission according to the received power of the random access procedure Msg2. The receiving power of the random access procedure Msg1 may include receiving power of the network device after the terminal device fails to send the Msg1 and performs a power ramp. Whether the Msg3 is repeated transmission and/or the indication of the number of repeated transmissions, and/or the indication of repeated transmissions can be one of the message 2 (Msg2), the system message (SI), the remaining minimum system message (RMSI), the broadcast message, and the RRC Or multiple instructions/configurations.

It should also be understood that in the embodiment of the present application, the number of repeated transmissions may also be associated with the power adjustment value corresponding to the power control parameter, as shown in Table 9:

Table 9 Correspondence between the first scaling factor and the power adjustment value

Optionally, the method 300 also includes:

The network device receives random access procedure message 1 sent by the terminal device;

The network device determines a second random access parameter according to the random access procedure message one;

The network device determines the first random access parameter according to the second random access parameter.

It should be understood that, in the embodiment of the present application, the timing advance means that the terminal device sends an uplink signal in advance to compensate for the transmission time from the terminal device to the network device in order to obtain uplink synchronization. The network device can determine the timing advance of the terminal through one or more of the random access preamble sent by the terminal device, SRS, and DMRS, and notify the terminal device of the timing advance/timing advance adjustment in the random access process message 2 or MAC-CE quantity.

It should also be understood that in this embodiment of the present application, the power control parameter is that the network device determines the power adjustment amount for the terminal device to send the random access process message 3 according to the received power of the random access preamble sent by the terminal, and the power control parameter is determined during the random access process The second message indicates the terminal the power control parameter.

It should be understood that the association between the second random access parameter and the first random access parameter may mean that there is a correspondence between the TA and the first random access parameter, or may mean that the second random access parameter is associated with the There is a mapping relationship between the first random access parameters.

For example, the repeated sending times are associated with TAs, and different TAs may be associated with the same or different repeated sending times, as shown in Table 10.

Table 10 Correspondence between the number of repeated transmissions and TA

TA(us) (Maximum) Repeat Sending Times 0-500 1 501-1000 2 1001-1500 3 1501-2000 4

It should be understood that in this embodiment of the present application, the association relationship between the number of repeated sending times and TA is not limited to a table, and the association relationship between the number of repeated sending times and TA can also be established in other ways.

It should also be understood that the embodiment of the present application does not limit the specific value of the number of repeated sending times, nor does it limit the specific interval length and number of intervals corresponding to TA, as long as the number of repeated sending times is greater than or equal to 1.

It should also be understood that the number of repeated transmissions is the maximum number of repeated transmissions of the Msg3, and the network device may instruct the terminal device to stop sending in advance if the Msg3 has been successfully demodulated before the terminal device sends the maximum number of repeated transmissions. The advantage of this method is that, as an existing field of Msg2, the TA value is associated with the maximum number of repeated transmissions, and no additional bit indication is required.

For example, when the TA is 600us, the terminal device can determine that the number of repeated transmissions of the Msg3 is 2, and the terminal device can repeatedly send the Msg3 2 times.

For another example, the TA is associated with the first scaling factor, and different TAs may be associated with the same or different first scaling factors, as shown in Table 11.

Table 11 Correspondence between the first scaling factor and TA

TA(us) first scaling factor 0-500 1/2 501-1000 1/4 1001-1500 1/6 1501-2000 1/8

It should be understood that the embodiment of the present application does not limit the specific value of the first scaling factor, nor does it limit the specific interval length and the number of intervals corresponding to TA, as long as the first scaling factor is less than or equal to 1.

For example, when the TA is 600us, the terminal device can determine that the first scaling factor is 1/4, and the terminal device can use the first scaling factor to send the Msg3.

For another example, Table 10 and Table 11 can be combined. When the TA is 600us, the terminal device can determine that the first scaling factor is 1/4 and the number of repeated transmissions of the Msg3 is 2, and the terminal device can use the first A scaling factor, the Msg3 is repeatedly sent to the network device twice.

In some possible implementations, the embodiment of the present application also provides the correspondence between TA and power control parameters and the number of repeated transmissions, as shown in Table 12:

Table 12 Correspondence between TA and power control parameters and the number of repeated transmissions

TA Power Control Parameters (Maximum) Repeat Sending Times 0-500 0-3 1 501-1000 4-6 2 1001-1500 7 3 1501-2000 0-7 4

It should be understood that the embodiment of the present application does not limit the interval length and the number of intervals corresponding to the TA, nor does it limit the specific value of the number of times of repeated sending, and the number of repeated sending should be greater than or equal to 1.

It should also be understood that Table 11 is only illustrative, and the corresponding relationship can also be added in Table 11, for example, the number of repeated transmissions corresponding to when TA is 0-500us and the power control parameter is 4-7, and for example, TA is 501- 1000us and the corresponding number of repeated transmissions when the power control parameter is 0-3.

For example, when the TA is 600us and the power control parameter is 4, the terminal device may determine that the number of repeated transmissions of Msg3 is 2.

In some possible implementation manners, the embodiment of the present application may also provide the correspondence between TA and power control parameters and the first scaling factor, as shown in Table 13:

Table 13 Correspondence between TA and power control parameters and the first scaling factor

TA Power Control Parameters first scaling factor 0-500 4 or 5 1/2 501-1000 6 1/4 1001-1500 7 1/6 1501-2000 0-7 1/8

It should be understood that the embodiment of the present application does not limit the interval length and the number of intervals corresponding to TA, nor does it limit the specific value of the first scaling factor, as long as the first scaling factor is less than or equal to 1.

It should also be understood that Table 13 is only illustrative, and the corresponding relationship can also be added in Table 13, for example, the corresponding first scaling factor when TA is 0-500us and the power control parameter is 6 or 7, and for example, TA is 501 -1000us and the corresponding first scaling factor when the power control parameter is 1-5.

For example, when the TA is 600us and the power control parameter is 6, the terminal device may determine that the scaling factor of the transport block of Msg3 is 1/4.

In some possible implementations, the method also includes:

The terminal device receives random access procedure message 2 and indication information sent by the network device, where the random access procedure message 2 includes second random access parameters, and the second random access parameters include timing advance and/or power control parameter, the second random access parameter is associated with a set of times of repeated transmissions and/or a set of scaling factors, and the indication information is used to indicate the number of times of repeated transmissions of the random access procedure message 3 in the set of times of repeated transmissions, and/or Or, the indication information is used to indicate the first scaling factor among the scaling factors;

Wherein, the terminal device determines the first random access parameter, including:

The terminal device determines the first random access parameter according to the second random access parameter and the indication information.

For example, in this embodiment of the present application, the TA may also correspond to one or more candidate repetition times, as shown in Table 14.

Table 14 Correspondence between the number of repeated transmissions and TA

TA(us) (Maximum) Repeat Sending Times 0-500 {1,2} 501-1000 {1,2} 1001-1500 {1,3} 1501-2000 {1,3}

Optionally, the network device may use the indication information to indicate a specific number of repetitions in the candidate set, for example, the network device may use 1 bit to indicate a specific value in the number of repeated transmissions of two candidates.

It should be understood that the indication manner may be included in one or more of a system message (SI), a minimum remaining system message (RMSI), other system messages, a synchronization message block, and Msg2.

It should be understood that the embodiment of the present application does not limit the specific value and number of repeated transmissions, nor does it limit the specific interval length and number of intervals corresponding to TA, nor does it limit the number of bits used by the network device for indication.

For example, when the TA is 600us, the terminal device can determine whether the number of repeated sending of the Msg3 is 1 or 2 through the indication information.

For another example, in this embodiment of the present application, the TA may also correspond to one or more candidate scaling factors, as shown in Table 15.

Table 15 Correspondence between the first scaling factor and TA

TA(us) first scaling factor 0-500 {1,1/2} 501-1000 {1/2,1/4} 1001-1500 {1/4,1/6} 1501-2000 {1/6,1/8}

Optionally, the network device may use the indication information to indicate the first scaling factor among multiple candidate scaling factors. For example, the network device may use 1 bit to indicate the first scaling factor among the two candidate scaling factors.

It should be understood that the indication manner may be included in one or more of a system message (SI), a minimum remaining system message (RMSI), other system messages, a synchronization message block, and Msg2.

It should be understood that the embodiment of the present application does not limit the specific value and number of scaling factors, nor does it limit the specific interval length and number of intervals corresponding to the TA, nor does it limit the number of bits used by the network device for indication.

For example, when the TA is 600us, the terminal device may determine whether the first scaling factor corresponding to the Msg3 is 1/2 or 1/4 according to the indication information.

For another example, Table 14 and Table 15 can be combined. When the TA is 600us, the terminal device can determine from the indication information that the first scaling factor corresponding to the Msg3 is 1/4, and the number of repeated transmissions of the Msg3 is 2. Then the terminal device uses the first scaling factor to repeatedly send the Msg3 to the network device twice.

Optionally, the method also includes:

S302. The terminal device receives random access procedure message 2 sent by the network device;

Wherein, the terminal device determines the first random access parameter, including:

The terminal device determines the first scaling factor according to the second scaling factor, where the second scaling factor is the scaling factor of the transport block corresponding to the second random access procedure message.

Specifically, when determining the first scaling factor of the Msg3, the terminal device may determine the first scaling factor according to the received second scaling factor of the Msg2.

For example, when the terminal device determines the first scaling factor of the Msg3, it may adopt the second scaling factor of the Msg2, that is, Msg3 multiplexes the scaling factor of the Msg2.

For another example, when determining the first scaling factor of the Msg3, the terminal device may multiply the second scaling factor of the Msg2 by a coefficient to obtain the first scaling factor.

Optionally, the scaling factor is less than or equal to the second scaling factor.

Optionally, the method 300 also includes:

S301. The network device receives random access procedure message 1 sent by the terminal device;

The network device determines a second scaling factor according to the random access process message 1, where the second scaling factor is a scaling factor of a transport block corresponding to the random access process message 2;

The network device determines the first scaling factor according to the second scaling factor.

Optionally, the method also includes:

The terminal device receives random access procedure message 2 and indication information sent by the network device;

Wherein, the terminal device determines the first random access parameter, including:

The terminal device determines the first scaling factor from the set of scaling factors corresponding to the second scaling factor according to the second scaling factor and the indication information, and the second scaling factor is the transmission block corresponding to the random access procedure message 2 scaling factor.

Specifically, the network device sends indication information to the terminal device, where the indication information is used to indicate the first scaling factor in the scaling factor set.

For example, if the network device uses a 1-bit indication, the scaling factor corresponding to Msg2 is 1, then the scaling factor corresponding to Msg 3 may be {1, 1/2}, and the 1-bit indication information may indicate that the first scaling factor is 1 or 1/2; for another example, the scaling factor corresponding to Msg2 is 1/2, then the scaling factor corresponding to Msg 3 can be {1/2,1/4}, and the 1-bit indication information can indicate the first scaling factor The factor is 1/2 or 1/4.

In the embodiment of the present application, the specific value of the first scaling factor corresponding to Msg3 is not limited, as long as it is less than or equal to the scaling factor corresponding to Msg2.

Optionally, the method 300 also includes:

The terminal device determines the time domain position of K repeated transmissions and the hybrid automatic repeat request HARQ retransmission cycle, K is the number of repeated transmissions, and K is a positive integer greater than or equal to 1, wherein the time of the K repeated transmissions Less than one HARQ retransmission period.

In a possible implementation manner, the time domain positions of the K repeated transmissions are adjacent in time, and FIG. 6 shows the time domain positions of the K repeated transmissions.

Optionally, the network device configures (or defaults) the HARQ retransmission period, and the HARQ retransmission period may be equal to a fixed value, or the HARQ retransmission period is indicated in the remaining minimum system information (RMSI) configured by the network device An integer multiple of the semi-static uplink and downlink configuration period.

Optionally, the HARQ retransmission period is predefined by the protocol.

It should be understood that if the network device is configured with two semi-static configuration periods X and Y, the HARQ retransmission period is an integer of min(X, Y), or max(X, Y), or (X+Y) Times, this application does not make any limitation to this.

In a possible implementation manner, the time domain positions of the K repeated transmissions are not adjacent in time, and FIG. 7 shows another time domain position of the K repeated transmissions.

Optionally, the method 300 also includes:

The terminal device receives the first indication information sent by the network device, where the first indication information is used to indicate the offset value of the time domain position of the K repeated transmissions in the HARQ cycle.

For the period described in the above two manners, the network device may additionally configure the offset value of the specific Msg3 transmission or the position of time repetition within the period through signaling. For example, the HARQ retransmission cycle is T, and for a certain terminal device, the time domain position of its K repeated transmissions may be configured as an offset value offset=0˜T−1 within the cycle.

For example, if the HARQ retransmission period is 5ms and the offset value is 1ms, then the time domain position of the K repeated transmissions is 1ms after the start of the HARQ period.

Optionally, the time domain position of the K repeated transmissions includes the time slot position of each transmission in the K repeated transmissions, and the method 300 further includes:

The terminal device determines the symbol position of each transmission in the time slot position of each transmission.

Specifically, the above two methods can be used to determine the time slot position where the terminal device sends Msg3, and the specific symbol position sent by Msg3 in the time slot can be indicated according to the time domain scheduling field in Msg2. Or, when determining the position of the symbol sent by Msg3 in the time slot, or the time domain position of K repeated transmissions or the HARQ retransmission period in the above two ways, from the time domain position of the time slot/repeated transmission or the HARQ The tail of the cycle is allocated forward.

For example, if the last symbol in a time slot is OFDM symbol #13, and the length of the Msg3 is 3 symbols, then the actual symbol positions of the Msg3 are OFDM symbol #11, OFDM symbol #12 and OFDM symbol #13.

Optionally, the method 300 also includes:

The network device sends second indication information to the terminal device, and the terminal device receives the second indication information sent by the network device, where the second indication information is used to indicate that the random access procedure message 3 is successfully received;

The terminal device stops sending the random access procedure message three according to the second indication information.

Specifically, after the terminal device determines that the maximum number of repeated transmissions of Msg3 is K, it performs K repeated transmissions of Msg3, and the network device may inform the terminal device that Msg3 has been successfully received before the terminal device sends K repeated transmissions. .

For example, the network device can tell the terminal device that Msg3 has been successfully sent through DCI, and there is no need to repeat it later; or, if the terminal device does not receive the status indication, it will continue to send by default; or, the terminal device will continue to send after sending each time or After multiple repetitions, wait for the ACK/NACK fed back by the network device, and then determine whether to continue the subsequent transmission.

It should be understood that in the embodiment of the present application, the frequency domain position sent by Msg3 may be indicated by other fields in Msg2.

Optionally, the method 300 also includes:

After sending the random access process message 3, the terminal device receives the random access process message 4 in the corresponding search space, thereby completing the random access process.

Fig. 8 shows a schematic flowchart of a communication method 400 provided by an embodiment of the present application. As shown in Fig. 8, the subject of execution of the method 400 may be a terminal device, or may be a chip or a device ( The following takes the execution subject as a terminal device as an example for description), the method 400 includes:

S410, the terminal device confirms that the number of repeated transmissions of the random access procedure message 3 is K, where K is a positive integer greater than or equal to 1;

S420. During the process of repeatedly sending Msg3 to the network device for K times, if the time domain position of the Nth repeated transmission conflicts with the time domain position of receiving the downlink signal, the terminal device skips the Nth repeated transmission, N is a positive integer greater than or equal to 1 and less than or equal to K.

Specifically, the terminal device may determine that the number of repeated transmissions of the random access procedure message 3 (Msg3) is K through any of the above methods 300, and then repeatedly send the Msg3 to the network device. During the process, if the time domain position of the Nth repeated transmission conflicts with the time domain position of receiving the downlink signal or high priority signal, or the time domain position of the Nth repeated transmission and the time domain position of receiving the downlink signal or high priority signal domain position does not conflict, but the time interval with the previous downlink signal or high-priority signal is not enough as a guard interval (for example, the guard interval includes terminal equipment processing time, and/or uplink and downlink switching time, etc.), then the terminal equipment skips After the Nth repeated transmission.

In some possible implementations, the downlink signal may include downlink synchronization signal block (SS/PBCH block), remaining minimum system information (Remaining Minimum System Information, RMSI) control resource set (Control Resource Set, CORESET), semi-static/semi One or more of the downlink signal (DL) and/or flexible (Flexible) part in the continuous uplink and downlink configuration (Semi-static DL/UL).

In some possible implementations, the high-priority signal may include a physical random access channel (Physical Random Access Channel, PRACH), an uplink control channel (Physical Uplink ControlChannel, PUCCH), an uplink monitoring reference signal (Sounding Reference Signal, SRS ), one or more of reserved resources (Reserved).

Optionally, the method 400 also includes:

After skipping the Nth repeated transmission, the terminal device continues to transmit the random access procedure message three at the next available time domain position.

Optionally, the terminal device continues to send random access procedure message 3 at the next available time domain position, which may also be referred to as: the terminal device sends Msg3 on the next available uplink resource.

It should be understood that the available uplink resources may be uplink (UL) and/or flexible (Flexible) parts, and the available time domain position does not conflict with downlink signals or high-priority resources, and the available time domain position is the same as the previous downlink The signal time interval is greater than or equal to the guard interval (for example, the guard interval includes terminal device processing time, and/or uplink and downlink switching time, etc.).

Specifically, the terminal device may continue to send the Msg3 at the next available time domain position.

Optionally, the method 400 also includes:

After the K times of repeated sending, the random access procedure message 3 is sent again.

Optionally, the terminal device skips M repeated transmissions during K repeated transmissions, where M is a positive integer greater than or equal to 1 and less than or equal to K, and the method further includes:

After the K times of repeated sending, the random access procedure message 3 is sent M times.

Specifically, when the Nth repeated transmission collides with the downlink signal transmission, the terminal device can consider the repeated transmission as invalid/skip the repeated transmission. If only K-1 times of Msg3 are sent at the location, then the terminal device can send the Msg3 again after the K times of repeated sending, and eventually K times of Msg3 is still sent repeatedly.

Optionally, the method 400 also includes:

For the random access procedure message 3 that is repeatedly sent K times, frequency hopping may be used for sending.

For example, the frequency domain position of the frequency hopping transmission may be indicated in the second random access procedure message, or the frequency hopping mode may be indicated by using the frequency domain resource indication field in the second random access procedure message.

For another example, in the K repeated transmissions, a fixed frequency hopping pattern (pattern) is used, or the frequency position of the frequency hopping transmission is associated with the number of repetitions.

It should be understood that in the embodiment of the present application, frequency hopping transmission refers to adopting different frequency domain positions each time the Msg3 is repeatedly transmitted, which helps to obtain frequency domain diversity gain.

It should be understood that the early termination mechanism in the above-mentioned method 300 may also be used in the method 400, and for the sake of brevity, details are not repeated here.

Above, in conjunction with Figure 1 to Figure 8, the communication method of the embodiment of the present application is described in detail, and the communication device, terminal device and network device of the embodiment of the present application are described in detail below in conjunction with Figure 9 to Figure 12, the method described in the embodiment The described technical features are also applicable to the following device embodiments.

FIG. 9 shows a schematic block diagram of a communication device 500 according to an embodiment of the present application. As shown in FIG. 9 , the communication device 500 includes: a processing module 510 and a transceiver module 520 .

Wherein, the processing module 510 is used to determine the first random access parameter, the first random access parameter includes the number of repeated transmissions of the random access procedure message 3 and/or the first scaling factor, the first scaling factor is the random The scaling factor of the transport block corresponding to the access procedure message 3;

The processing module 510 is further configured to control the transceiver module 520 to send the random access procedure message three to the network device according to the first random access parameter.

Optionally, the transceiver module 520 is also configured to receive a random access procedure message 2 sent by the network device, the random access procedure message 2 includes a second random access parameter, and the second random access parameter includes a timing advance and/or a power control parameter, the second random access parameter being associated with the first random access parameter;

Wherein, the processing module 510 is specifically used for:

Determine the first random access parameter according to the second random access parameter.

Optionally, the transceiver module 520 is further configured to send a random access procedure message 1 to the network device, the format of the random access procedure message 1 being associated with the first random access parameter;

Wherein, the processing module 510 is specifically used for:

Determine the first random access parameter according to the format of message one of the random access procedure.

Optionally, the transceiver module 520 is also configured to receive random access procedure message 2 sent by the network device;

Wherein, the processing module 510 is specifically used for:

The first scaling factor is determined according to the second scaling factor, where the second scaling factor is the scaling factor of the transport block corresponding to the second random access procedure message.

Optionally, the first scaling factor is smaller than or equal to the second scaling factor.

Optionally, the processing module 510 is also configured to determine the time domain position of K repeated transmissions and the hybrid automatic repeat request HARQ retransmission period, K is the number of repeated transmissions, and K is a positive integer greater than or equal to 1, where , the K repeated transmission time is less than one HARQ retransmission period.

Optionally, the transceiving module 520 is further configured to receive first indication information sent by the network device, where the first indication information is used to indicate the offset value of the time domain position of the K repeated transmissions in the HARQ cycle.

Optionally, the time domain position of the K repeated transmissions includes the time slot position of each transmission in the K repeated transmissions, and the processing module 510 is further configured to determine the time slot position of each transmission in the time slot position of each transmission The symbol position to send.

Optionally, the time domain position of the Nth repeated transmission among the K times of repeated transmissions conflicts with the time domain position of receiving the downlink signal or the high priority signal, or, the time domain position of the Nth repeated transmission conflicts with the time domain position of receiving the downlink signal or the high priority signal. The time domain position of the high-priority signal does not conflict, but the time interval between receiving the previous downlink signal or the high-priority signal is not enough as a guard interval, N is a positive integer greater than or equal to 1 and less than or equal to K, and the processing module 510 also uses In order to control the transceiver module 520 to skip the Nth repeated sending.

Optionally, the transceiver module 520 is further configured to send the random access procedure message three again after the K times of repeated sending.

Optionally, the transceiver module 520 is further configured to receive second indication information sent by the network device, where the second indication information is used to indicate that the random access procedure message 3 is successfully received;

The processing module 510 is further configured to control the transceiver module 520 to stop sending the random access procedure message three according to the second indication information.

Specifically, the communication device 500 may correspond to the terminal device in the communication method 300 of the embodiment of the present application, and the communication device 500 may include a module (or unit) for performing the method performed by the terminal device of the communication method 300 in FIG. 5 . Moreover, each module (or unit) and the above-mentioned other operations and/or functions in the communication device 500 are respectively intended to implement the corresponding flow of the communication method 300 in FIG. 5 . The specific process of each module (or unit) performing the above corresponding steps has been described in detail in the method 300, and for the sake of brevity, details are not repeated here.

It should be understood that the communication apparatus 500 may be a terminal device, or may be a chip or a functional unit in the terminal device.

FIG. 10 shows a schematic block diagram of a communication device 600 according to an embodiment of the present application. As shown in FIG. 10 , the communication device 600 includes: a processing module 610 and a transceiver module 620 .

The processing module 610 is configured to determine a first random access parameter, where the first random access parameter includes the number of repeated transmissions of random access procedure message 3 and/or a first scaling factor, where the first scaling factor is the random access The scaling factor of the transmission block corresponding to process message 3;

The transceiving module 620 is configured to receive the random access procedure message three sent by the terminal device according to the first random access parameter.

Optionally, the transceiver module 620 is also configured to receive random access procedure message one sent by the terminal device;

The processing module 610 is further configured to determine a second random access parameter according to the random access procedure message one, where the second random access parameter includes a timing advance and/or a power control parameter, and the second random access parameter is related to The first random access parameter is associated;

Wherein, the processing module 610 is specifically used for:

Determine the first random access parameter according to the second random access parameter.

Optionally, the transceiver module 620 is also configured to receive a random access procedure message 1 sent by the terminal device, the format of the random access procedure message 1 is associated with the first random access parameter;

Wherein, the processing module 610 is specifically used for:

Determine the first random access parameter according to the format of message one of the random access procedure.

Optionally, the transceiver module 620 is also configured to receive random access procedure message one sent by the terminal device;

The processing module 610 is further configured to determine a second scaling factor according to the random access procedure message 1, where the second scaling factor is the scaling factor of the transport block corresponding to the random access procedure message 2;

Wherein, the processing module 610 is specifically used for:

Determine the first scaling factor according to the second scaling factor.

Optionally, the first scaling factor is smaller than or equal to the second scaling factor.

Specifically, the communication device 600 may correspond to the network device in the communication method 300 of the embodiment of the present application, and the communication device 600 may include a module (or unit) for performing the method performed by the network device of the communication method 300 in FIG. 5 . Moreover, each module (or unit) and the above-mentioned other operations and/or functions in the communication device 600 are respectively intended to implement the corresponding flow of the communication method 300 in FIG. 5 . The specific process of each module (or unit) performing the above corresponding steps has been described in detail in the method 300, and for the sake of brevity, details are not repeated here.

It should be understood that the communication apparatus 600 may be a network device, or may be a chip or a functional unit in the network device.

It should be understood that the division of modules (or units) in the above device is only a division of logical functions, and may be fully or partially integrated into a physical entity or physically separated during actual implementation. And the modules (or units) in the device can all be implemented in the form of software calling through processing elements; they can also be realized in the form of hardware; some modules (or units) can also be realized in the form of software calling through processing elements, and some modules (or unit) is realized in the form of hardware. For example, each module (or unit) can be an independently established processing element, and can also be integrated in a certain chip of the device. In addition, it can also be stored in the memory in the form of a program, which is invoked and executed by a certain processing element of the device. Execute the function of the module (or unit). In addition, all or part of these modules (or units) can be integrated together, or implemented independently. The processing element mentioned here may also be a processor, which may be an integrated circuit with signal processing capabilities. In the process of implementation, each step of the above method or each module (or unit) above may be realized by an integrated logic circuit of hardware in the processor element, or implemented in the form of software called by the processing element.

In one example, the module (or unit) in any of the above devices may be one or more integrated circuits configured to implement the above method, for example: one or more specific integrated circuits (Application Specific Integrated Circuit, ASIC), or , one or more microprocessors (digital signal processor, DSP), or, one or more field programmable gate arrays (Field Programmable Gate Array, FPGA), or a combination of at least two of these integrated circuit forms. For another example, when the module (or unit) in the device can be implemented in the form of a processing element scheduler, the processing element can be a general-purpose processor, such as a central processing unit (Central Processing Unit, CPU) or other processors that can call programs . For another example, these modules (or units) can be integrated together and implemented in the form of a system-on-a-chip (SOC).

The transceiver module (or unit) used above is an interface circuit of the device, which is used to receive signals from other devices, and can also be used to send signals to other devices. For example, when the device is implemented in the form of a chip, the transceiver module is an interface circuit for the chip to receive signals from other chips or devices, or an interface circuit of the device for sending signals to other devices. For example, when the device is implemented in the form of a chip, the transceiver module may be an interface circuit used by the chip to send signals to other chips or devices.

FIG. 11 shows a schematic structural diagram of a terminal device provided by an embodiment of the present application. It may be the terminal device in the above embodiments, and is used to realize the operations of the terminal devices in the above embodiments. As shown in FIG. 11 , the terminal includes: an antenna 710 , a radio frequency part 720 , and a signal processing part 730 . The antenna 710 is connected to the radio frequency part 720 . In the downlink direction, the radio frequency part 720 receives the information sent by the network device through the antenna 710, and sends the information sent by the network device to the signal processing part 730 for processing. In the uplink direction, the signal processing part 730 processes the information of the terminal device and sends it to the radio frequency part 720 , and the radio frequency part 720 processes the information of the terminal device and sends it to the network device through the antenna 710 .

The signal processing part 730 may include a modulation and demodulation subsystem, which is used to realize the processing of each communication protocol layer of the data; it may also include a central processing subsystem, which is used to realize the processing of the operating system and the application layer of the terminal equipment; in addition, it may also Including other subsystems, such as multimedia subsystem, peripheral subsystem, etc., wherein the multimedia subsystem is used to realize the control of the terminal camera, screen display, etc., and the peripheral subsystem is used to realize the connection with other devices. The modem subsystem can be a separate chip. Optionally, the above apparatus for terminal equipment may be located in the modem subsystem.

The modem subsystem may include one or more processing elements 731, including, for example, a master CPU and other integrated circuits. In addition, the modem subsystem may further include a storage element 732 and an interface circuit 733 . The storage element 732 is used to store data and programs, but the program used to execute the method executed by the terminal device in the above methods may not be stored in the storage element 732, but stored in a memory outside the modem subsystem, When used, the modem subsystem is loaded and used. Interface circuit 733 is used to communicate with other subsystems. The above apparatus for a terminal device may be located in a modem subsystem, and the modem subsystem may be realized by a chip, and the chip includes at least one processing element and an interface circuit, wherein the processing element is used to execute any one of the above terminals. In various steps of the method, the interface circuit is used to communicate with other devices. In one implementation, the unit for the terminal to implement each step in the above method may be implemented in the form of a processing element scheduler. For example, the device for the terminal device includes a processing element and a storage element, and the processing element calls the program stored in the storage element to execute The method performed by the terminal device in the above method embodiment. The storage element may be a storage element on the same chip as the processing element, that is, an on-chip storage element.

In another implementation, the program for executing the method executed by the terminal device in the above method may be stored in a storage element on a different chip from the processing element, that is, an off-chip storage element. At this time, the processing element invokes or loads a program from the off-chip storage element on the on-chip storage element, so as to invoke and execute the method performed by the terminal device in the above method embodiment.

In yet another implementation, the unit of the terminal device that implements each step in the above method may be configured as one or more processing elements, and these processing elements are set on the modem subsystem, where the processing elements may be integrated circuits, For example: one or more ASICs, or one or more DSPs, or one or more FPGAs, or a combination of these types of integrated circuits. These integrated circuits can be integrated together to form a chip.

The units of the terminal device for implementing each step in the above method can be integrated together and implemented in the form of a system-on-a-chip (SOC). The SOC chip is used to implement the above method. The chip may integrate at least one processing element and a storage element, and the processing element calls the stored program of the storage element to realize the method executed by the above terminal device; or, the chip may integrate at least one integrated circuit for realizing the above terminal The method executed by the device; or, the above implementation manners may be combined, the functions of some units are implemented in the form of calling programs by processing elements, and the functions of some units are implemented in the form of integrated circuits.

It can be seen that the above apparatus for a terminal device may include at least one processing element and an interface circuit, where at least one processing element is configured to execute any method performed by the terminal device provided in the above method embodiments. The processing element can perform some or all of the steps performed by the terminal device in the first way: that is, by calling the program stored in the storage element; or in the second way: through the integrated logic circuit of the hardware in the processor element combined with instructions Part or all of the steps performed by the terminal device may be performed in a manner; of course, some or all of the steps performed by the terminal device may also be performed in combination with the first method and the second method.

The processing element here is the same as the above description, and can be a general-purpose processor, such as a CPU, and can also be one or more integrated circuits configured to implement the above method, such as: one or more ASICs, or, one or more microprocessors DSP, or, one or more FPGAs, etc., or a combination of at least two of these integrated circuit forms.

A storage element may be a memory, or may be a general term for multiple storage elements.

FIG. 12 is a schematic structural diagram of a network device provided by an embodiment of the present application. It is used to realize the operation of the network device in the above embodiments. As shown in FIG. 1 , the network device includes: an antenna 801 , a radio frequency device 802 , and a baseband device 803 . The antenna 801 is connected to the radio frequency device 802 . In the uplink direction, the radio frequency device 802 receives the information sent by the terminal device through the antenna 801, and sends the information sent by the terminal device to the baseband device 803 for processing. In the downlink direction, the baseband device 803 processes the information of the terminal device and sends it to the radio frequency device 802 , and the radio frequency device 802 processes the information of the terminal device and sends it to the terminal device through the antenna 801 .

The baseband device 803 may include one or more processing elements 8031, including, for example, a master CPU and other integrated circuits. In addition, the baseband device 803 may also include a storage element 8032 and an interface 8033, the storage element 8032 is used to store programs and data; the interface 8033 is used to exchange information with the radio frequency device 802, the interface is, for example, a common public radio interface (common public radio interface) , CPRI). The above apparatus for network equipment may be located in the baseband apparatus 803, for example, the above apparatus for network equipment may be a chip on the baseband apparatus 803, the chip includes at least one processing element and an interface circuit, wherein the processing element is used to execute the above network The steps of any method performed by the device, and the interface circuit is used to communicate with other devices. In one implementation, the unit for the network device to implement each step in the above method may be implemented in the form of a processing element scheduler, for example, the device for the network device includes a processing element and a storage element, and the processing element calls the program stored in the storage element to Execute the method executed by the network device in the above method embodiment. The storage element may be a storage element on the same chip as the processing element, that is, an on-chip storage element, or may be a storage element that is on a different chip from the processing element, that is, an off-chip storage element.

In another implementation, the unit of the network device implementing each step in the above method may be configured as one or more processing elements, and these processing elements are set on the baseband device, where the processing element may be an integrated circuit, for example: a Or multiple ASICs, or, one or more DSPs, or, one or more FPGAs, or a combination of these types of integrated circuits. These integrated circuits can be integrated together to form a chip.

The units of the network device for implementing each step in the above method may be integrated together and implemented in the form of a system-on-a-chip (SOC). For example, the baseband device includes the SOC chip for implementing the above method. The chip may integrate at least one processing element and a storage element, and the processing element calls the stored program of the storage element to realize the method performed by the above network device; or, the chip may integrate at least one integrated circuit for realizing the above network The method executed by the device; or, the above implementation manners may be combined, the functions of some units are implemented in the form of calling programs by processing elements, and the functions of some units are implemented in the form of integrated circuits.

It can be seen that the above apparatus for a network device may include at least one processing element and an interface circuit, where at least one processing element is configured to execute any one of the methods performed by the network device provided in the above method embodiments. The processing element can perform some or all of the steps performed by the network device in the first way: that is, by calling the program stored in the storage element; or in the second way: that is, through the integrated logic circuit of the hardware in the processor element combined with instructions Part or all of the steps performed by the network device may be performed in a manner; of course, some or all of the steps performed by the above network device may also be performed in combination with the first method and the second method.

The processing element here is the same as the above description, and can be a general-purpose processor, such as a CPU, and can also be one or more integrated circuits configured to implement the above method, such as: one or more ASICs, or, one or more microprocessors DSP, or, one or more FPGAs, etc., or a combination of at least two of these integrated circuit forms.

A storage element may be a memory, or may be a general term for multiple storage elements.

The terminal equipment and network equipment in each of the above device embodiments can completely correspond to the terminal equipment or network equipment in the method embodiments, and corresponding steps are performed by corresponding modules or units. For example, the transceiver module includes a sending module and a receiving module, and the sending module The module (transmitter) can perform the sending step in the method embodiment, the receiving module (receiver) can perform the receiving step in the method embodiment, and other steps except sending and receiving can be performed by the processing module (processor). For the functions of the specific modules, reference may be made to the corresponding method embodiments. The sending module and the receiving module can form a transceiver module, and the transmitter and receiver can form a transceiver to jointly realize the transmitting and receiving function; there can be one or more processors.

An embodiment of the present application further provides a communication system, where the communication system includes: the above-mentioned terminal device, and/or, the above-mentioned network device.

In the embodiment of the present application, it should be noted that the foregoing method embodiments in the embodiment of the present application may be applied to or implemented by a processor. A processor may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above-mentioned method embodiments may be completed by an integrated logic circuit of hardware in a processor or instructions in the form of software. The above-mentioned processor may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other programmable Logic devices, discrete gate or transistor logic devices, discrete hardware components. Various methods, steps, and logic block diagrams disclosed in the embodiments of the present application may be implemented or executed. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, and the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in the embodiments of the present application may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memories. Wherein, the non-volatile memory may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM, PROM), an erasable programmable read-only memory (Erasable PROM, EPROM), an electronically programmable Erase Programmable Read-Only Memory (Electrically EPROM, EEPROM) or Flash. The volatile memory can be Random Access Memory (RAM), which acts as an external cache. By way of illustration and not limitation, many forms of RAM are available such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (Synchlink DRAM, SLDRAM) And direct memory bus random access memory (DirectRambus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but not be limited to, these and any other suitable types of memory.

It should be understood that reference to "one embodiment" or "an embodiment" in the specification means that specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Thus, appearances of "in one embodiment" or "in an embodiment" in various places throughout the specification are not necessarily referring to the same embodiment. Furthermore, the particular features, structures or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the order of execution, and the execution order of the processes should be determined by their functions and internal logic, and should not be used in the embodiments of the present application. The implementation process constitutes any limitation.

Additionally, the terms "system" and "network" are often used herein interchangeably. The term "and/or" in this article is just an association relationship describing associated objects, which means that there can be three relationships, for example, A and/or B can mean: A exists alone, A and B exist simultaneously, and there exists alone B these three situations. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

It should be understood that in this embodiment of the present application, "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should also be understood that determining B according to A does not mean determining B only according to A, and B may also be determined according to A and/or other information.

The terms "first" and "second" in this application are only used to distinguish different objects, and "first" and "second" themselves do not limit the actual order or function of the objects they modify. Expressions such as "exemplary", "example", "for example", "alternative design" or "one design" appearing in this application are only used to represent examples, illustrations or descriptions. Any embodiment or design described in this application as "exemplary", "example", "for example", "alternative design" or "a design" should not be construed as superior to other embodiments or The design scheme is more preferable or more advantageous. Rather, these words are used to present related concepts in a concrete way.

The terms "uplink" and "downlink" appearing in this application are used to describe the direction of data/information transmission in specific scenarios. For example, the "uplink" direction generally refers to the direction in which data/information is transmitted from terminal equipment to the network side, or The direction of transmission from distributed units to centralized units. The "downlink" direction generally refers to the direction of data/information transmission from the network side to terminal equipment, or the direction of transmission from centralized units to distributed units. It can be understood that "uplink" and "Downlink" is only used to describe the transmission direction of data/information, and the specific starting and ending devices of the data/information transmission are not limited.

The meaning of the expression similar to "including at least one of the following: A, B, and C" appearing in this application, unless otherwise specified, usually means that the item can be any of the following: A; B; C; A and B; A and C; B and C; A, B and C; A and A; A, A and A; A, A and B; A, A and C, A, B and B; A, C and C ; B and B, B, B and B, B, B and C, C and C; C, C and C, and other combinations of A, B and C. The above is an example of the three elements of A, B and C to illustrate the optional items of the project. When the expression is "the project includes at least one of the following: A, B, ..., and X", that is, the When there are more elements in the expression, then the applicable entries for this item can also be obtained according to the aforementioned rules.

Various objects such as messages/information/equipment/network element/system/device/action/operation/process/concept that may appear in this application have been assigned names. It is understandable that these specific names do not Constitutes a limitation on related objects, and the assigned name can be changed with the scene, context or usage habits and other factors. The understanding of the technical meaning of the technical terms in this application should mainly be based on the functions embodied/executed in the technical solution and technical effects to determine.

The architecture of CU and DU in the embodiment of this application is not limited to 5G NR gNB, and can also be applied in the scenario where LTE base station is divided into CU and DU; CU can be further divided into CP and UP. Optionally, when it is an LTE base station, the protocol layer does not include an SDAP layer.

It should be understood that reference throughout the specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the present application. Thus, appearances of "in one embodiment" or "in an embodiment" in various places throughout the specification are not necessarily referring to the same embodiment. Furthermore, the particular features, structures or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the order of execution, and the execution order of the processes should be determined by their functions and internal logic, and should not be used in the embodiments of the present application. The implementation process constitutes any limitation.

Additionally, the terms "system" and "network" are often used herein interchangeably. The term "and/or" in this article is just an association relationship describing associated objects, which means that there can be three relationships, for example, A and/or B can mean: A exists alone, A and B exist simultaneously, and there exists alone B these three situations. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

It should be understood that in this embodiment of the present application, "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should also be understood that determining B according to A does not mean determining B only according to A, and B may also be determined according to A and/or other information.

The network architecture and business scenarios described in the embodiments of this application are for the convenience of readers to clearly understand the technical solutions of the embodiments of this application, and do not constitute limitations on the technical solutions provided by the embodiments of this application. For the evolution of architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of this application are also applicable to similar technical problems.

In the above embodiments, all or part may be implemented by software, hardware, firmware or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product. The computer program product may comprise one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present application will be generated in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website, computer, server or data center Transmission to another website site, computer, server, or data center by wired (eg, coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server or a data center integrated with one or more available media. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic disk), an optical medium (eg, DVD), or a semiconductor medium (eg, a solid state disk (Solid State Disk, SSD)).

Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.

If the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: various media capable of storing program codes such as U disk, mobile hard disk, read-only memory, random access memory, magnetic disk or optical disk.

The above is only a specific implementation of the application, but the scope of protection of the application is not limited thereto. Anyone familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the application. Should be covered within the protection scope of this application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims (29)

1. A communication method, characterized in that, comprising: Determine a first random access parameter, where the first random access parameter includes the number of repeated transmissions of random access procedure message 3 and/or a first scaling factor, where the first scaling factor is the random access procedure message 3 The scaling factor of the corresponding transport block; Send the random access procedure message three to the network device according to the first random access parameter. 2. The method according to claim 1, characterized in that the method further comprises: receiving random access procedure message 2 sent by the network device, where the random access procedure message 2 includes a second random access parameter, and the second random access parameter includes a timing advance and/or a power control parameter, the the second random access parameter is associated with the first random access parameter; Wherein, said determining the first random access parameter includes: Determine the first random access parameter according to the second random access parameter. 3. The method according to claim 1, characterized in that the method further comprises: sending a random access procedure message 1 to the network device, where the format of the random access procedure message 1 is associated with the first random access parameter; Wherein, said determining the first random access parameter includes: Determine the first random access parameter according to the format of the first random access procedure message. 4. The method according to claim 1, wherein the method further comprises: receiving random access procedure message 2 sent by the network device; Wherein, said determining the first random access parameter includes: Determine the first scaling factor according to the second scaling factor, where the second scaling factor is the scaling factor of the transport block corresponding to the random access procedure message two. 5. The method according to claim 4, wherein the first scaling factor is smaller than or equal to the second scaling factor. 6. The method according to any one of claims 1 to 5, further comprising: Determine the time domain position of K repeated transmissions and the hybrid automatic repeat request HARQ retransmission period, K is the number of repeated transmissions, and K is a positive integer greater than or equal to 1, wherein the time of K repeated transmissions is less than One HARQ retransmission cycle. 7. The method according to claim 6, further comprising: receiving first indication information sent by the network device, where the first indication information is used to indicate an offset value of the time domain position of the K repeated transmissions in the HARQ cycle. 8. The method according to claim 6 or 7, wherein the time domain position of the K repeated transmissions comprises a time slot position of each transmission in the K repeated transmissions, and the method further comprises: In the slot position of each transmission, the symbol position of each transmission is determined. 9. The method according to any one of claims 6 to 8, wherein the time domain position of the Nth repeated transmission in the K repeated transmissions is the same as the time domain position of receiving the downlink signal or the high priority signal Position conflict, or, when the time interval between the time domain position of the Nth repeated transmission and the previous downlink signal or high priority signal is not enough as a guard interval, N is a positive integer greater than or equal to 1 and less than or equal to K , the method also includes: Skip the Nth repeated sending. 10. A communication method, characterized in that, comprising: Determine a first random access parameter, where the first random access parameter includes the number of repeated transmissions of random access procedure message 3 and/or a first scaling factor, where the first scaling factor is the random access procedure message 3 The scaling factor of the corresponding transport block; The receiving terminal device sends the random access procedure message three according to the first random access parameter. 11. The method of claim 10, further comprising: Receive random access procedure message 1 sent by the terminal device; According to the first random access procedure message, determine a second random access parameter, the second random access parameter includes a timing advance and/or a power control parameter, and the second random access parameter is the same as the first Random access parameter association; Wherein, said determining the first random access parameter includes: Determine the first random access parameter according to the second random access parameter. 12. The method according to claim 10, further comprising: receiving a random access procedure message 1 sent by the terminal device, where the format of the random access procedure message 1 is associated with the first random access parameter; Wherein, said determining the first random access parameter includes: Determine the first random access parameter according to the format of the first random access procedure message. 13. The method of claim 10, further comprising: Receive random access procedure message 1 sent by the terminal device; Determine a second scaling factor according to the random access procedure message 1, where the second scaling factor is the scaling factor of the transport block corresponding to the random access procedure message 2; Wherein, said determining the first random access parameter includes: Determine the first scaling factor according to the second scaling factor. 14. The method according to claim 13, wherein the first scaling factor is smaller than or equal to the second scaling factor. 15. A communication device, characterized in that it includes a processing module and a transceiver module, wherein, The processing module is used to determine a first random access parameter, where the first random access parameter includes the number of repeated transmissions of the random access procedure message 3 and/or a first scaling factor, where the first scaling factor is the The scaling factor of the transport block corresponding to the random access procedure message three; The processing module is further configured to control the transceiver module to send the random access procedure message three to the network device according to the first random access parameter. 16. The communication device according to claim 15, wherein the transceiver module is further configured to receive a random access process message 2 sent by the network device, and the random access process message 2 includes a second random access message input parameters, the second random access parameters include timing advance and/or power control parameters, the second random access parameters are associated with the first random access parameters; Wherein, the processing module is specifically used for: Determine the first random access parameter according to the second random access parameter. 17. The communication device according to claim 15, wherein the transceiver module is further configured to send a random access procedure message 1 to the network device, the format of the random access procedure message 1 is the same as that of the first random access procedure message a random access parameter is associated; Wherein, the processing module is specifically used for: Determine the first random access parameter according to the format of the first random access procedure message. 18. The communication device according to claim 15, wherein the transceiver module is further configured to receive random access procedure message 2 sent by the network device; Wherein, the processing module is specifically used for: Determine the first scaling factor according to the second scaling factor, where the second scaling factor is the scaling factor of the transport block corresponding to the random access procedure message two. 19. The communication device according to claim 18, wherein the first scaling factor is smaller than or equal to the second scaling factor. 20. The communication device according to any one of claims 15 to 19, wherein the processing module is further configured to determine the time domain position of K repeated transmissions and the hybrid automatic repeat request (HARQ) retransmission period, K is the number of repeated transmissions, K is a positive integer greater than or equal to 1, where the time of the K repeated transmissions is less than one HARQ retransmission period. 21. The communication device according to claim 20, wherein the transceiver module is further configured to receive first indication information sent by the network device, the first indication information is used to indicate the K times of repeated transmission The offset value of the time domain position in the HARQ cycle. 22. The communication device according to claim 20 or 21, wherein the time-domain position of the K repeated transmissions includes a time slot position of each transmission in the K repeated transmissions, and the processing module further uses In the slot position of each transmission, the symbol position of each transmission is determined. 23. The communication device according to any one of claims 20 to 22, wherein the time domain position of the Nth repeated transmission among the K repeated transmissions is the same as the time when receiving the downlink signal or the high priority signal domain position conflict, or, when the time interval between the time domain position of the Nth repeated transmission and the time interval between receiving the previous downlink signal or high priority signal is not enough as a guard interval, N is a positive value greater than or equal to 1 and less than or equal to K Integer, the processing module is further configured to control the transceiver module to skip the Nth repeated sending. 24. A communication device, characterized in that it includes a processing module and a transceiver module, wherein, The processing module is configured to determine a first random access parameter, where the first random access parameter includes the number of repeated transmissions of the random access procedure message 3 and/or a first scaling factor, where the first scaling factor is the The scaling factor of the transport block corresponding to the random access procedure message three; The transceiver module is configured to receive the random access procedure message three sent by the terminal device according to the first random access parameter. 25. The communication device according to claim 24, wherein the transceiver module is further configured to receive a random access procedure message one sent by the terminal device; The processing module is further configured to determine a second random access parameter according to the random access procedure message one, where the second random access parameter includes a timing advance and/or a power control parameter, and the second random access an input parameter is associated with the first random access parameter; Wherein, the processing module is specifically used for: Determine the first random access parameter according to the second random access parameter. 26. The communication device according to claim 24, wherein the transceiver module is further configured to receive a random access procedure message 1 sent by a terminal device, the format of the random access procedure message 1 is the same as that of the first Random access parameter association; Wherein, the processing module is specifically used for: Determine the first random access parameter according to the format of the first random access procedure message. 27. The communication device according to claim 24, wherein the transceiver module is further configured to receive a random access procedure message one sent by the terminal device; The processing module is further configured to determine a second scaling factor according to the random access procedure message 1, where the second scaling factor is the scaling factor of the transport block corresponding to the random access procedure message 2; Wherein, the processing module is specifically used for: Determine the first scaling factor according to the second scaling factor. 28. The communication device according to claim 27, wherein the first scaling factor is smaller than or equal to the second scaling factor. 29. A storage medium, comprising a program, and when the program is executed by a processor, the method according to any one of claims 1-14 is executed.