WO2018153238A1 - Information transmission method, user equipment, base station, communication apparatus and storage medium - Google Patents

Abstract

Disclosed are an information transmission method, a user equipment, a base station, a communication apparatus and a storage medium. The method comprises: determining a data packet to be sent; determining, according to the number of times that the data packet is transmitted, an antecedent sequence corresponding to the data packet; and sending the antecedent sequence corresponding to the data packet and the data packet to a base station side.

Description

Information transmission method, user equipment, base station, communication device, and storage medium

Cross-reference to related applications

The present application is filed on the basis of the Chinese Patent Application No. PCT Application No. PCT Application Serial No.

Technical field

The present invention relates to information processing technologies in the field of communications, and in particular, to an information transmission method, a user equipment, a base station, a communication device, and a storage medium.

Background technique

According to the moment when retransmission occurs, HARQ can be classified into two types: synchronous and asynchronous. In the existing 4G (LTE/LTE-A) standard, the downlink traffic channel adopts an asynchronous adaptive HARQ scheme, and the uplink traffic channel adopts a synchronous non-adaptive HARQ scheme. And the transmission of data (service) channels (both uplink and downlink) is based on a Grant-based transmission.

However, based on the scheduling mode, the delay and the delay are relatively long, which is not suitable for future low-latency and high-reliability application scenarios.

Summary of the invention

The main object of the present invention is to provide an information transmission method, a user equipment, a base station, a communication device, and a storage medium, which are directed to solving the above problems in the prior art.

To achieve the above object, the present invention provides an information transmission method, including:

Determine the data packet to be sent;

Determining, according to the number of transmissions of the data packet, a preamble sequence corresponding to the data packet;

Sending the preamble sequence corresponding to the data packet and the data packet to the base station side.

The embodiment of the invention further provides an information transmission method, which is applied to a base station, and includes:

Receiving a data packet sent by the user equipment and a preamble sequence corresponding to the data packet;

Determining, according to the preamble sequence, the number of transmissions corresponding to the received data packet.

The embodiment of the invention provides a user equipment, including:

a processing unit, configured to determine a data packet to be sent;

a sequence determining unit, configured to determine, according to the number of transmissions of the data packet, a preamble sequence corresponding to the data packet;

And a communication unit, configured to send the preamble sequence corresponding to the data packet and the data packet to the base station side.

An embodiment of the present invention provides a user equipment, where the user equipment includes:

a first processor, configured to determine a data packet to be sent; determining a preamble sequence corresponding to the data packet based on a number of transmissions of the data packet;

The first communication interface is configured to send the preamble sequence corresponding to the data packet and the data packet to the base station side.

The embodiment of the invention further provides a base station, including:

a receiving unit, configured to receive a data packet sent by the user equipment;

And a detecting unit, configured to extract a preamble sequence from the data packet, and determine, according to the preamble sequence, a number of transmissions corresponding to the received data packet.

An embodiment of the present invention further provides a base station, where the base station includes:

a second communication interface configured to receive a data packet sent by the user equipment;

The second processor is configured to extract a preamble sequence from the data packet, and determine, according to the preamble sequence, a number of transmissions corresponding to the received data packet.

Embodiments of the present invention also provide a communication apparatus, including: a processor and a memory for storing a computer program executable on the processor,

Wherein the processor is configured to perform the steps of the foregoing method when the computer program is run.

Embodiments of the present invention also provide a storage medium storing computer executable instructions that are implemented when the computer executable instructions are executed.

The invention provides an information transmission method, a user equipment, a base station, a communication device and a storage medium, which can combine the number of transmissions with a preamble sequence, and set a preamble sequence related to the number of transmissions in a data packet to interact; In the case of no call information, the preamble sequence enables the receiver to know the number of transmissions of the data packet, and can perform feedback based on this, thereby further adapting to the transmission scenario with low latency and high reliability.

DRAWINGS

1 is a schematic flowchart 1 of an information transmission method according to an embodiment of the present invention;

2 is a schematic flowchart 2 of an information transmission method according to an embodiment of the present invention;

3 is a schematic flowchart 3 of an information transmission method according to an embodiment of the present invention;

4 is a schematic flowchart 4 of an information transmission method according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of an information interaction scenario of an information transmission method according to an embodiment of the present invention;

6 is a schematic diagram of a scenario for performing HARQ transmission in the prior art;

Figure 7 is a schematic structural diagram 1 of a user equipment of the present invention;

Figure 8 is a schematic structural view 2 of the user equipment of the present invention;

9 is a schematic structural diagram 1 of a base station structure according to an embodiment of the present invention;

FIG. 10 is a schematic structural diagram 2 of a base station structure of the present invention.

detailed description

The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

Embodiment 1

The embodiment of the invention provides a data transmission method, which is applied to a user equipment. As shown in FIG. 1 , the method includes:

Step 101: Determine a data packet to be sent;

Step 102: Determine, according to the number of transmissions of the data packet, a preamble sequence corresponding to the data packet.

Step 103: Send the preamble sequence corresponding to the data packet and the data packet to the base station side.

Here, before the step 101 is performed, the user equipment may also complete synchronization with the base station side, and the synchronization may include scanning, cell search and downlink synchronization, reading system information (such as MIB and SIB1 messages), and processing such as cell selection. The flow is not described in detail in this embodiment.

Further, when performing step 101, determining the data packet to be sent, specifically determining that the current uplink data includes the data packet; the specific content of the data packet may be related to the current processing flow of the user equipment; for example, the current user equipment and When the processing flow between the base stations is paging, the user equipment can send a paging request, and then the data packet is the content to be included in the paging. The foregoing is only an example, and the user equipment may also send other types of data packets in other processing flows, which are all within the protection scope of the embodiment, but are not exhaustive here.

In the above step 101, the number of times the data packet is transmitted may be the number of times recorded by the user equipment side. The specific recording mode may be that a counter is set for the number of transmissions of the data packet, and the counter is set every time the data packet is sent. The count value is incremented by one to determine the number of transmissions of the data packet.

Further, in the foregoing step 102, the manner of determining the preamble sequence corresponding to the data packet may include the following two types based on the number of transmissions of the data packet:

method one,

When the number of transmissions of the data packet is N, the preamble sequence used when the number of transmissions is M is obtained as a reference preamble sequence; wherein N and M are both positive numbers, and N is greater than or equal to M ;

Determining, according to the N and M, a number of cyclic shifts K corresponding to the reference preamble sequence; wherein K is an integer;

The reference preamble sequence is cyclically shifted K times to obtain a preamble sequence required when the number of transmissions of the data packet is N.

The number of transmissions M can be set according to actual conditions. For example, M can be set to the first transmission, that is, the preamble sequence used when the data packet is sent for the first time.

Further, based on the N and M, determining a cyclic shift number K corresponding to the reference preamble sequence; wherein K is an integer; determining a corresponding cyclic shift number K may be a cyclic shift according to a preset a list of bit times to determine;

The cyclic shift number list may specifically include different cyclic shift times corresponding to different difference values; or may directly set different corresponding cyclic shift times according to different N and M values. The difference is the difference between N and M.

For example, when the difference is 0 (or, when N=M), K can also be 0; when the difference is 1, K can be 1; when the difference is 2, K can be 2. Of course, the foregoing is only an example. When the cyclic shift count list is specifically set, the difference may not be equal to K. For example, when the difference is 1, the K is 2, and when the difference is 2, K is 4. This embodiment is no longer exhaustive for the correspondence between the difference between N and M and the corresponding number of cyclic shifts.

The Preamble sequence itself has a certain constraint relationship. The Preamble sequence used for the number of transmissions of the data packet N (TxN) is obtained by cyclically shifting the Preamble sequence used by the data packet with the number of transmissions M (TxM) by K times. Where M, N, and K are integers, and N is an integer greater than M.

That is to say, when a data packet is sent for the first time, sequence 1 is used as the preamble sequence; at this time, M=1;

When the data packet is sent for the second time, that is, N=2, then the second time of the data packet transmission is the first retransmission. At this time, sequence 1 is shifted by K1 to obtain sequence 2. Add sequence 2 as a preamble sequence to the data packet; that is, when N=M+1, K1 can be calculated according to a preset cyclic displacement relationship;

When the data packet is transmitted for the third time, when N=M+2, according to the preset cyclic shift relationship, the obtained K2 can be equal to 2*K1 or equal to 2+K1.

In this processing mode, it is further pointed out that when a certain data packet is transmitted for the first time, a preamble sequence may be randomly selected from the preset preamble sequence set as a preamble sequence corresponding to the data packet ( For example, it may be a sequence 1); correspondingly, when the data packet is retransmitted for the Nth time, the preamble sequence (sequence 1) of the first transmission of the data packet may be used as a reference preamble sequence, and the sequence is cycled. Shifting K times, a new preamble sequence (sequence 1-1) is obtained, and sequence 1-1 is used as a preamble sequence for the Nth retransmission of the data packet. It should also be noted that when a certain data packet selects a corresponding preamble sequence, a preamble sequence that has not been used by other data packets may be selected.

Method 2,

Determining the number of transmissions of the data packet N;

Obtaining, according to the number of transmissions N, an index number of the corresponding preamble sequence from the preamble sequence index table, where the preamble sequence index table includes a correspondence between the number of transmissions and the index number of the preamble sequence ;

Determining a corresponding preamble sequence based on an index number of the preamble sequence, and determining the preamble sequence as a preamble sequence corresponding to the Nth retransmission of the data packet.

The difference between the processing mode and the mode is that, when the retransmission is performed, the corresponding preamble sequence is selected based on the number of transmissions, and then, under different transmission times, there is no cyclic shift between the preamble sequences included in the data packet. Relationship. It should be pointed out that the data packet can be different from other data packets when the preamble sequence is selected. The other data packet may be in a transmission period close to the data packet, for example, other data packets within N minutes or within N seconds of the data packet transmission duration.

That is to say, in the present processing mode, the preamble Preamble sequence itself establishes a connection by a certain mapping rule. For example, the index of a specific Preamble used in several transmissions for the same packet is obtained by looking up the table.

After the foregoing processing steps are completed, the embodiment may further determine, according to the feedback information sent by the base station, whether the retransmitted data packet is correctly detected on the base station side. Specifically, the method further includes:

Detecting feedback information sent by the base station side;

Extracting an index number of the preamble sequence from the feedback information, and determining, according to the index number, a receiving state of the data packet corresponding to the feedback information; wherein the receiving state characterizing the data packet on the base station side Whether the test was successful.

The correspondence between the index number of the preamble sequence and the data packet may be as follows:

Corresponding to the mode 1, when the user equipment determines the preamble sequence used for transmitting the data packet in the foregoing manner, the data packet indicated in the feedback information may be learned by the preamble sequence index number; that is, in the In the feedback information of the base station side corresponding to the mode 1, feedback on which retransmission of the data packet is performed may not be known, but it is possible to know exactly which feedback information corresponds to the data packet. In the present processing method, it is possible to know, based on the sequence of the plurality of feedback information for a certain data packet, or the chronological order, which feedback information is specifically transmitted for the retransmission (transmission) of the data packet.

Alternatively, the B preamble sequences and their corresponding index numbers, and the B preamble sequences of each of the preamble sequences for K cyclic shifts and their corresponding index numbers may be stored on the base station side; When performing correlation demodulation of the preamble sequence, the index number corresponding to each preamble sequence can be known; correspondingly, the user equipment can directly know the data packet corresponding to the feedback information by directly receiving the index number. The number of transmissions.

Corresponding to the second method, when the user equipment determines the preamble sequence used for each data transmission packet by using the foregoing manner 2, the data packet indicated in the feedback information may be learned through the preamble sequence index number, and can be directly learned. Feedback information about which retransmission of the packet was sent.

It can be seen that, by adopting the above scheme, the number of transmissions can be combined with the preamble sequence, and the preamble sequence related to the number of transmissions is set in the data packet for interaction; thus, the information can be passed without the call information. The sequence of sequences enables the receiver to know the number of times the data packet is transmitted, and can perform feedback based on this, thereby being more suitable for a transmission scenario with low latency and high reliability.

Embodiment 2

The embodiment provides a data receiving method, which is applied to a base station, as shown in FIG. 2, and includes:

Step 201: Receive a data packet sent by the user equipment and a preamble sequence corresponding to the data packet.

Step 202: Determine, according to the preamble sequence, the number of transmissions corresponding to the received data packet.

Further, based on the foregoing FIG. 2, in conjunction with FIG. 3, the method provided by this embodiment further includes:

Step 203: Perform detection on the data packet to obtain a detection result.

Step 204: Acquire an index number of the preamble sequence, generate feedback information based on the detection result and an index number of the preamble sequence, and send the feedback information to the user equipment.

In the foregoing step 202, the preamble sequence is extracted, and the preamble sequence may be extracted from the data packet according to a preset preamble sequence data bit.

Further, how to determine the number of transmissions corresponding to the received data packet based on the preamble sequence may include the following two resolution modes:

Analytical method

Comparing the extracted preamble sequence with at least one preset preamble sequence in the preset preamble sequence set saved by itself to obtain a reference preset preamble sequence; wherein the comparing manner may be performing correlation Calculations, etc., will not be repeated here;

Determining, according to the reference preset preamble sequence, a number of cyclic shifts of the extracted preamble sequence;

And determining, according to the number of cyclic shifts, the number of transmissions corresponding to the data packet.

The manner of determining the corresponding number of cyclic shifts K may be determined according to a preset cyclic shift number list; the cyclic shift count list may specifically include different cyclic shifts corresponding to different difference values. The number of bits.

Further, the base station side may further store a reference transmission number, for example, the data packet that can be retransmitted for the Mth time is used as the reference transmission number;

Correspondingly, based on the number of cyclic shifts, determining a corresponding difference; the difference corresponds to a difference between the number of transmissions N corresponding to the current data packet and the number of reference transmissions M; wherein, N and M are positive numbers, And N is greater than or equal to M;

Further, based on the difference between the N and the M, the number N of retransmissions of the current data packet is determined.

The Preamble sequence itself has a certain constraint relationship. The Preamble sequence used for the number of transmissions of the data packet N (TxN) is obtained by cyclically shifting the Preamble sequence used by the data packet with the number of transmissions M (TxM) by K times. Where M, N, and K are integers, and N is an integer greater than M.

There may be other processing manners, for example, the base station side stores A preamble sequences and their corresponding index numbers, and B preamble sequences for which each preamble sequence performs K cyclic shifts and corresponding index numbers. Then, when the base station side performs correlation demodulation of the preamble sequence, the index number corresponding to each preamble sequence can be known; correspondingly, the user equipment can directly learn the feedback information by using the received index number. The number of times the corresponding packet was transmitted. Among them, A and B are integers.

Analysis method 2

Comparing the extracted preamble sequence with the pre-preset pre-sequence sequence saved by itself to obtain a corresponding reference preset pre-sequence sequence;

And determining, according to the index number corresponding to the reference preset preamble sequence, the number of transmissions of the data packet.

The difference between the processing mode and the parsing mode is that, when the retransmission is performed, the corresponding preamble sequence is selected based on the number of transmissions, and then there is no cyclic shift between the preamble sequences included in the data packet under different transmission times. The relationship of bits.

That is to say, in the present processing mode, the preamble Preamble sequence itself establishes a connection by a certain mapping rule. For example, the index of a specific Preamble used in several transmissions for the same packet is obtained by looking up the table.

In the prior art, since there is no process of scheduling and resource dynamic allocation by the base station in the Grant-free transmission process, before the base station feeds back the HARQ-ACK/HARQ-NACK, since there is no transmission of the Grant message, if it continues to follow In the HARQ mode of the traditional LTE/LTE-A, the user cannot obtain information such as NDI, RV, and HARQ Process ID in the Grant message. As a result, the base station side cannot know whether the data from one user is an initial data packet, a retransmission data packet, and the number of times the retransmission occurs.

With reference to the foregoing first embodiment and the second embodiment, referring to FIG. 4, the solution proposed in this embodiment includes the following processing flow:

Step 41: The user equipment completes a downlink synchronization process with the base station. Specifically, the method may include: sweeping, cell search and downlink synchronization, reading system information (such as MIB and SIB1 messages), and cell selection;

Step 42: When the user equipment needs to send uplink data, the user equipment randomly selects the Preamble sequence, and directly performs uplink data transmission together with the data. The specific process is as shown in FIG. 5. The difference between the conventional HARQ and the retransmission method provided by this embodiment can be seen by using FIG. 5, in the prior art, the HARQ needs to perform the next heavy weight after receiving the feedback information of the base station side. After the method provided in this embodiment is used, it is not necessary to wait, but the retransmission of the data packet is performed multiple times before the acknowledgement information fed back by the base station is received. It should be noted that the retransmission upper limit value of a data packet is also set here, and when the number of transmissions reaches the retransmission upper limit value, it is determined to discard the data packet.

Step 43: The base station receives the data, performs detection on the received data to obtain a detection result, and sends feedback information to the user equipment based on the detection result.

Specifically, after detecting the data packet, the base station feeds back an ACK/NACK message for each data packet according to whether the detection result is correct or not.

In step 43, the base station side attempts blind detection in the Preamble set, and then performs some processing (for example, correlation operation) with the Preamble in the received data packet according to different Preambles, so that the number of times of data packet transmission can be implicitly obtained. information. In addition, when the base station side feeds back ACK/NACK, it does not perform according to the Packet ID, but performs ACK/NACK feedback according to the Preamble index used by each data packet. Therefore, in the physical HARQ indicator channel, in addition to feeding back ACK/NACK information, it is required to feed back the used Preamble index information.

Combining with FIG. 6 to analyze the delay in the prior art, it can be seen that the total transmission delay is L=T_SRtrigger+T_Grant+T_Processing+T_retrans; if it is a Grant-based transmission mode, the above delay is T_SRtrigger+T_Gratn. Part of the delay is unavoidable. Even if the subcarrier spacing is changed from 15KHz to 30kHz, the Grant-free transmission method is required for URLLC (low latency high reliability service).

It can be seen that, by adopting the above scheme, the number of transmissions can be combined with the preamble sequence, and the preamble sequence related to the number of transmissions is set in the data packet for interaction; thus, the information can be passed without the call information. The sequence of sequences enables the receiver to know the number of times the data packet is transmitted, and can perform feedback based on this, thereby being more suitable for a transmission scenario with low latency and high reliability.

Embodiment 3

An embodiment of the present invention provides a user equipment, as shown in FIG. 7, including:

a processing unit 71, configured to determine a data packet to be sent;

The sequence determining unit 72 is configured to determine, according to the number of transmissions of the data packet, a preamble sequence corresponding to the data packet;

The communication unit 73 is configured to send the data packet and the data packet of the preamble sequence corresponding to the data packet to a base station side.

Here, the user equipment may also perform synchronization with the base station side, and the synchronization may include a frequency sweep, a cell search and a downlink synchronization, a system process (such as a MIB and an SIB1 message), and a cell selection process, etc., in this embodiment. No details will be given.

Further, the processing unit 71 is configured to determine a data packet to be sent, where the data packet to be sent may be specifically determined to be related to the current processing flow of the user equipment; for example, the current user equipment. When the processing flow between the base station and the base station is paging, the user equipment can send a paging request, and then the data packet is the content to be included in the paging. The foregoing is only an example, and the user equipment may also send other types of data packets in other processing flows, which are all within the protection scope of the embodiment, but are not exhaustive here.

Obtaining the number of transmissions of the data packet may be used by the processing unit 71 for the number of times the user equipment side records itself. The specific recording mode may be that a counter is set for the number of transmissions of the data packet, and the counter is sent every time the data packet is sent. The count value is incremented by one to determine the number of transmissions of the data packet.

Further, based on the number of transmissions of the data packet, the manner of determining the preamble sequence corresponding to the data packet may include the following two types:

method one,

a sequence determining unit, configured to: when the number of transmissions of the data packet is N, obtain a preamble sequence used by the data packet when the number of transmissions is M, as a reference preamble sequence; wherein, N and M are both positive numbers And N is greater than or equal to M;

Determining, according to the N and M, a number of cyclic shifts K corresponding to the reference preamble sequence; wherein K is an integer;

The reference preamble sequence is cyclically shifted K times to obtain a preamble sequence required when the number of transmissions of the data packet is N.

The number of transmissions M can be set according to actual conditions. For example, M can be set to the 0th retransmission, that is, the preamble sequence used when the data packet is sent for the first time.

Further, based on the N and M, determining a number of cyclic shifts K corresponding to the reference preamble sequence; wherein K is an integer; wherein the manner of determining the corresponding number of cyclic shifts K may be according to a preset a list of the number of cyclic shifts to determine;

The cyclic shift number list may specifically include different cyclic shift times corresponding to different difference values. The difference is a difference between N and M; for example, when the difference is 0, K can also be 0; when the difference is 1, K can be 1; when the difference is 2, K can be 2. Of course, the foregoing is only an example. When the cyclic shift count list is specifically set, the difference may not be equal to K. For example, when the difference is 1, the K is 2, and when the difference is 2, K is 4. This embodiment is no longer exhaustive for the correspondence between the difference between N and M and the corresponding number of cyclic shifts.

The Preamble sequence itself has a certain constraint relationship. The Preamble sequence used for the number of transmissions of the data packet N (TxN) is obtained by cyclically shifting the Preamble sequence used by the data packet with the number of transmissions M (TxM) by K times. Where M, N, and K are integers, and N is an integer greater than M.

That is to say, when a data packet is sent for the first time, sequence 1 is used as the preamble sequence; at this time, M=1;

When the data packet is sent for the second time, that is, N=2, then the second time of the data packet transmission is the first retransmission. At this time, sequence 1 is shifted by K1 to obtain sequence 2. Add sequence 2 as a preamble sequence to the data packet; that is, when N=M+1, K1 can be calculated according to a preset cyclic displacement relationship;

When the data packet is transmitted for the third time, when N=M+2, according to the preset cyclic shift relationship, the obtained K2 can be equal to 2*K1 or equal to 2+K1.

In this processing mode, it is further pointed out that when a certain data packet is transmitted for the first time, a preamble sequence may be randomly selected from the preset preamble sequence set as a preamble sequence corresponding to the data packet ( For example, it may be a sequence 1); correspondingly, when the data packet is retransmitted for the Nth time, the preamble sequence (sequence 1) of the first transmission of the data packet may be used as a reference preamble sequence, and the sequence is cycled. Shifting K times, a new preamble sequence (sequence 1-1) is obtained, and sequence 1-1 is used as a preamble sequence for the Nth retransmission of the data packet.

Method 2,

a sequence determining unit, configured to determine a number N of transmissions of the data packet;

Obtaining, according to the number of transmissions N, an index number of the corresponding preamble sequence from the preamble sequence index table, where the preamble sequence index table includes a correspondence between the number of transmissions and the index number of the preamble sequence ;

Determining a corresponding preamble sequence based on an index number of the preamble sequence, and determining the preamble sequence as a preamble sequence corresponding to the Nth retransmission of the data packet.

The difference between the processing mode and the mode is that, when the retransmission is performed, the corresponding preamble sequence is selected based on the number of transmissions, and then, under different transmission times, there is no cyclic shift between the preamble sequences included in the data packet. Relationship.

That is to say, in the present processing mode, the preamble Preamble sequence itself establishes a connection by a certain mapping rule. For example, the index of a specific Preamble used in several transmissions for the same packet is obtained by looking up the table.

After the foregoing processing steps are completed, the embodiment may further determine, according to the feedback information sent by the base station, whether the retransmitted data packet is correctly detected on the base station side. Specifically, the method further includes:

Detecting feedback information sent by the base station side;

Extracting an index number of the preamble sequence from the feedback information, and determining, according to the index number, a receiving state of the data packet corresponding to the feedback information; wherein the receiving state characterizing the data packet on the base station side Whether the test was successful.

The correspondence between the index number of the preamble sequence and the data packet may be as follows:

Corresponding to the mode 1, when the processing unit is configured to determine the preamble sequence used for each transmission of the data packet by using the foregoing manner, the data packet indicated in the feedback information may be obtained by using the preamble sequence index number; It is said that in the feedback information of the base station side corresponding to the mode 1, feedback on which retransmission of the data packet is performed may not be known, but it is possible to know exactly which feedback information corresponds to the data packet. In the present processing method, it is possible to know, based on the sequence of the plurality of pieces of feedback information for a certain data packet, or the chronological order, which feedback information is specifically transmitted for the retransmission of the data packet.

Alternatively, the following processing may also be adopted: the base station side stores A preamble sequences and their corresponding index numbers, and B preamble sequences for which each preamble sequence performs K cyclic shifts and corresponding index numbers; When the base station side performs correlation demodulation of the preamble sequence, the index number corresponding to each preamble sequence can be known; correspondingly, the user equipment can directly know the feedback information by using the received index number. The number of times the packet was transmitted.

Corresponding to the second mode, the processing unit is configured to: when the user equipment determines the preamble sequence used for each data packet by using the foregoing manner 2, the data packet indicated by the feedback information may be learned by using the preamble sequence index number. And it is possible to directly know which retransmission of the data packet is sent back.

It can be seen that, by adopting the above scheme, the number of transmissions can be combined with the preamble sequence, and the preamble sequence related to the number of transmissions is set in the data packet for interaction; thus, the information can be passed without the call information. The sequence of sequences enables the receiver to know the number of times the data packet is transmitted, and can perform feedback based on this, thereby being more suitable for a transmission scenario with low latency and high reliability.

Embodiment 4

An embodiment of the present invention provides a user equipment, as shown in FIG. 8, including:

The first processor 81 is configured to determine a data packet to be sent, obtain a number of transmissions of the data packet, and determine a preamble sequence corresponding to the data packet based on the number of transmissions of the data packet;

The first communication interface 82 is configured to send the preamble sequence corresponding to the data packet and the data packet to the base station side.

Here, the user equipment may also perform synchronization with the base station side, and the synchronization may include a frequency sweep, a cell search and a downlink synchronization, a system process (such as a MIB and an SIB1 message), and a cell selection process, etc., in this embodiment. No details will be given.

Further, the first processor 81 determines the data packet to be sent, and specifically determines that the current uplink data includes the data packet; the specific content of the data packet may be related to the current processing flow of the user equipment; for example, the current user equipment When the processing flow between the base station and the base station is paging, the user equipment can send a paging request, and then the data packet is the content to be included in the paging. The foregoing is only an example, and the user equipment may also send other types of data packets in other processing flows, which are all within the protection scope of the embodiment, but are not exhaustive here.

The number of times of obtaining the data packet may be the number of times that the first processor 81 records the user equipment itself. The specific recording mode may be that a counter is set for the number of transmissions of the data packet, and the counter is sent every time the data packet is sent. The count value is incremented by one to determine the number of transmissions of the data packet.

Further, based on the number of transmissions of the data packet, the manner of determining the preamble sequence corresponding to the data packet may include the following two types:

method one,

The first processor 81 obtains, as the reference preamble sequence, the preamble sequence used when the number of transmissions is M, when the number of transmissions of the data packet is N; wherein N and M are both positive numbers And N is greater than or equal to M;

Determining, according to the N and M, a number of cyclic shifts K corresponding to the reference preamble sequence; wherein K is an integer;

The reference preamble sequence is cyclically shifted K times to obtain a preamble sequence required when the number of transmissions of the data packet is N.

The number of transmissions M can be set according to actual conditions. For example, M can be set to the 0th retransmission, that is, the preamble sequence used when the data packet is sent for the first time.

Further, based on the N and M, determining a number of cyclic shifts K corresponding to the reference preamble sequence; wherein K is an integer; wherein the manner of determining the corresponding number of cyclic shifts K may be according to a preset a list of the number of cyclic shifts to determine;

The cyclic shift number list may specifically include different cyclic shift times corresponding to different difference values. The difference is a difference between N and M; for example, when the difference is 0, K can also be 0; when the difference is 1, K can be 1; when the difference is 2, K can be 2. Of course, the foregoing is only an example. When the cyclic shift count list is specifically set, the difference may not be equal to K. For example, when the difference is 1, the K is 2, and when the difference is 2, K is 4. This embodiment is no longer exhaustive for the correspondence between the difference between N and M and the corresponding number of cyclic shifts.

The Preamble sequence itself has a certain constraint relationship. The Preamble sequence used for the number of transmissions of the data packet N (TxN) is obtained by cyclically shifting the Preamble sequence used by the data packet with the number of transmissions M (TxM) by K times. Where M, N, and K are integers, and N is an integer greater than M.

That is to say, when a data packet is sent for the first time, sequence 1 is used as the preamble sequence; at this time, M=1;

When the data packet is sent for the second time, that is, N=2, then the second time of the data packet transmission is the first retransmission. At this time, sequence 1 is shifted by K1 to obtain sequence 2. Add sequence 2 as a preamble sequence to the data packet; that is, when N=M+1, K1 can be calculated according to a preset cyclic displacement relationship;

When the data packet is transmitted for the third time, when N=M+2, according to the preset cyclic shift relationship, the obtained K2 can be equal to 2*K1 or equal to 2+K1.

In this processing mode, it is further pointed out that when a certain data packet is transmitted for the first time, a preamble sequence may be randomly selected from the preset preamble sequence set as a preamble sequence corresponding to the data packet ( For example, it may be a sequence 1); correspondingly, when the data packet is retransmitted for the Nth time, the preamble sequence (sequence 1) of the first transmission of the data packet may be used as a reference preamble sequence, and the sequence is cycled. Shifting K times, a new preamble sequence (sequence 1-1) is obtained, and sequence 1-1 is used as a preamble sequence for the Nth retransmission of the data packet.

Method 2,

The first processor 81 determines the number of transmissions N of the data packet;

Obtaining, according to the number of transmissions N, an index number of the corresponding preamble sequence from the preamble sequence index table, where the preamble sequence index table includes a correspondence between the number of transmissions and the index number of the preamble sequence ;

Determining a corresponding preamble sequence based on an index number of the preamble sequence, and determining the preamble sequence as a preamble sequence corresponding to the Nth retransmission of the data packet.

The difference between the processing mode and the mode is that, when the retransmission is performed, the corresponding preamble sequence is selected based on the number of transmissions, and then, under different transmission times, there is no cyclic shift between the preamble sequences included in the data packet. Relationship.

That is to say, in the present processing mode, the preamble Preamble sequence itself establishes a connection by a certain mapping rule. For example, the index of a specific Preamble used in several transmissions for the same packet is obtained by looking up the table.

After the foregoing processing steps are completed, the embodiment may further determine, according to the feedback information sent by the base station, whether the retransmitted data packet is correctly detected on the base station side; specifically, the first processor 81 detects the base station. Sending feedback information from the side; extracting an index number of the preamble sequence from the feedback information, and determining, according to the index number, a receiving state of the data packet corresponding to the feedback information; wherein the receiving state characterizes the Whether the data packet is detected on the base station side is successful.

The correspondence between the index number of the preamble sequence and the data packet may be as follows:

Corresponding to the mode 1, when the first processor 81 determines the preamble sequence used for each transmission of the data packet in the foregoing manner, the data packet indicated in the feedback information may be known by the preamble sequence index number; That is to say, in the feedback information of the base station side corresponding to the mode 1, it may not be possible to know the feedback of which packet is retransmitted, but it is possible to know exactly which packet corresponds to the feedback information. In the present processing method, it is possible to know, based on the sequence of the plurality of pieces of feedback information for a certain data packet, or the chronological order, which feedback information is specifically transmitted for the retransmission of the data packet.

Alternatively, the following processing may also be adopted: the base station side stores A preamble sequences and their corresponding index numbers, and B preamble sequences for which each preamble sequence performs K cyclic shifts and corresponding index numbers; When the base station side performs correlation demodulation of the preamble sequence, the index number corresponding to each preamble sequence can be known; correspondingly, the user equipment can directly know the feedback information by using the received index number. The number of times the packet was transmitted.

Corresponding to the second mode, the first processor 81, when the user equipment determines the preamble sequence used for transmitting the data packet by using the foregoing manner 2, the data packet indicated in the feedback information may be learned by using the preamble sequence index number. And can directly know which retransmission of the data packet is sent back.

It can be seen that, by adopting the above scheme, the number of transmissions can be combined with the preamble sequence, and the preamble sequence related to the number of transmissions is set in the data packet for interaction; thus, the information can be passed without the call information. The sequence of sequences enables the receiver to know the number of times the data packet is transmitted, and can perform feedback based on this, thereby being more suitable for a transmission scenario with low latency and high reliability.

Embodiment 5

This embodiment provides a base station, as shown in FIG. 9, including:

The receiving unit 91 is configured to receive a data packet sent by the user equipment and a preamble sequence corresponding to the data packet;

The detecting unit 92 is configured to determine, according to the preamble sequence, the number of transmissions corresponding to the received data packet.

Further, it also includes:

a sending unit 93, configured to send the feedback information to the user equipment;

Correspondingly, the detecting unit 92 is further configured to: detect the data packet to obtain a detection result; obtain an index number of the preamble sequence, and generate feedback based on the detection result and an index number of the preamble sequence information.

The detecting unit 92 is configured to extract the preamble sequence from the data packet according to a preset preamble sequence data bit.

Further, how to determine the number of transmissions corresponding to the received data packet based on the preamble sequence may include the following two resolution modes:

Analytical method

The detecting unit 92 is configured to compare the extracted preamble sequence with at least one preset preamble sequence in the preset preamble sequence set saved by itself, to obtain a reference preset preamble sequence; wherein the compared The method can be related to the calculation of correlation, etc., and will not be described here;

Obtaining a number of cyclic shifts existing between the preamble sequence and the reference preset preamble sequence;

And determining, according to the number of cyclic shifts, the number of transmissions corresponding to the data packet.

The manner of determining the corresponding number of cyclic shifts K may be determined according to a preset cyclic shift number list; the cyclic shift count list may specifically include different cyclic shifts corresponding to different difference values. The number of bits.

Further, the base station side may further store a reference transmission number, for example, the data packet that can be retransmitted for the Mth time is used as the reference transmission number;

Correspondingly, based on the number of cyclic shifts, determining a corresponding difference; the difference corresponds to a difference between the number of transmissions N corresponding to the current data packet and the number of reference transmissions M; wherein, N and M are positive numbers, And N is greater than or equal to M;

Further, based on the difference between the N and the M, the number N of retransmissions of the current data packet is determined.

The Preamble sequence itself has a certain constraint relationship. The Preamble sequence used for the number of transmissions of the data packet N (TxN) is obtained by cyclically shifting the Preamble sequence used by the data packet with the number of transmissions M (TxM) by K times. Where M, N, and K are integers, and N is an integer greater than M.

Alternatively, the following processing may also be adopted: the base station side stores A preamble sequences and their corresponding index numbers, and B preamble sequences for which each preamble sequence performs K cyclic shifts and corresponding index numbers; When the base station side performs correlation demodulation of the preamble sequence, the index number corresponding to each preamble sequence can be known; correspondingly, the user equipment can directly know the feedback information by using the received index number. The number of times the packet was transmitted.

Analysis method 2

The detecting unit 92 is configured to compare the extracted preamble sequence with the preset preamble sequence set saved by itself to obtain a corresponding reference preset preamble sequence;

And determining, according to the index number corresponding to the reference preset preamble sequence, the number of transmissions of the data packet.

The difference between the processing mode and the mode is that, when the retransmission is performed, the corresponding preamble sequence is selected based on the number of transmissions, and then, under different transmission times, there is no cyclic shift between the preamble sequences included in the data packet. Relationship.

That is to say, in the present processing mode, the preamble Preamble sequence itself establishes a connection by a certain mapping rule. For example, the index of a specific Preamble used in several transmissions for the same packet is obtained by looking up the table.

It can be seen that, by adopting the above scheme, the number of transmissions can be combined with the preamble sequence, and the preamble sequence related to the number of transmissions is set in the data packet for interaction; thus, the information can be passed without the call information. The sequence of sequences enables the receiver to know the number of times the data packet is transmitted, and can perform feedback based on this, thereby being more suitable for a transmission scenario with low latency and high reliability.

Embodiment 6

This embodiment provides a base station, as shown in FIG. 10, including:

The second communication interface 1001 is configured to receive a data packet sent by the user equipment and a preamble sequence corresponding to the data packet;

The second processor 1002 is configured to determine, according to the preamble sequence, the number of transmissions corresponding to the received data packet.

Further, it also includes:

The second communication interface 1001 is configured to send the feedback information to the user equipment;

Correspondingly, the second processor 1002 is configured to detect the data packet to obtain a detection result, obtain an index number of the preamble sequence, and generate an index number based on the detection result and the preamble sequence. Feedback.

The second processor 1002 is configured to extract the preamble sequence from the data packet according to a preset preamble sequence data bit.

Further, how to determine the number of transmissions corresponding to the received data packet based on the preamble sequence may include the following two resolution modes:

Analytical method

The second processor 1002 is configured to compare the extracted preamble sequence with at least one preset preamble sequence in the preset preamble sequence set saved by itself to obtain a reference preset preamble sequence; The comparison method can be used for correlation calculation, etc., and will not be described here;

Obtaining a number of cyclic shifts existing between the preamble sequence and the reference preset preamble sequence;

And determining, according to the number of cyclic shifts, the number of transmissions corresponding to the data packet.

The manner of determining the corresponding number of cyclic shifts K may be determined according to a preset cyclic shift number list; the cyclic shift count list may specifically include different cyclic shifts corresponding to different difference values. The number of bits.

Further, the base station side may further store a reference transmission number, for example, the data packet that can be retransmitted for the Mth time is used as the reference transmission number;

Correspondingly, based on the number of cyclic shifts, determining a corresponding difference; the difference corresponds to a difference between the number of transmissions N corresponding to the current data packet and the number of reference transmissions M; wherein, N and M are positive numbers, And N is greater than or equal to M;

Further, based on the difference between the N and the M, the number N of retransmissions of the current data packet is determined.

The Preamble sequence itself has a certain constraint relationship. The Preamble sequence used for the number of transmissions of the data packet N (TxN) is obtained by cyclically shifting the Preamble sequence used by the data packet with the number of transmissions M (TxM) by K times. Where M, N, and K are integers, and N is an integer greater than M.

Alternatively, the following processing may also be adopted: the base station side stores A preamble sequences and their corresponding index numbers, and B preamble sequences for which each preamble sequence performs K cyclic shifts and corresponding index numbers; When the base station side performs correlation demodulation of the preamble sequence, the index number corresponding to each preamble sequence can be known; correspondingly, the user equipment can directly know the feedback information by using the received index number. The number of times the packet was transmitted.

Analysis method 2

The second processor 1002 is configured to compare the extracted preamble sequence with the preset preamble sequence set saved by itself to obtain a corresponding reference preset preamble sequence;

And determining, according to the index number corresponding to the reference preset preamble sequence, the number of transmissions of the data packet.

The difference between the processing mode and the mode is that, when the retransmission is performed, the corresponding preamble sequence is selected based on the number of transmissions, and then, under different transmission times, there is no cyclic shift between the preamble sequences included in the data packet. Relationship.

That is to say, in the present processing mode, the preamble Preamble sequence itself establishes a connection by a certain mapping rule. For example, the index of a specific Preamble used in several transmissions for the same packet is obtained by looking up the table.

It can be seen that, by adopting the above scheme, the number of transmissions can be combined with the preamble sequence, and the preamble sequence related to the number of transmissions is set in the data packet for interaction; thus, the information can be passed without the call information. The sequence of sequences enables the receiver to know the number of times the data packet is transmitted, and can perform feedback based on this, thereby being more suitable for a transmission scenario with low latency and high reliability.

An embodiment of the present invention further provides a hardware component architecture of a user equipment or a base station, including: at least one processor, a memory, and at least one network interface. The various components are coupled together by a bus system. It will be appreciated that the bus system is used to implement connection communication between these components. In addition to the data bus, the bus system includes a power bus, a control bus, and a status signal bus.

It is to be understood that the memory in the embodiments of the present invention may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.

In some embodiments, the memory stores elements, executable modules or data structures, or a subset thereof, or their extended set: an operating system and an application.

The processor is configured to be able to process the method steps of the first embodiment or the second embodiment, and details are not described herein.

A storage medium is provided by the embodiment of the present invention, where the storage medium stores computer executable instructions, and when the computer executable instructions are executed, the method steps of the first embodiment or the second embodiment are implemented.

It is to be understood that the term "comprises", "comprising", or any other variants thereof, is intended to encompass a non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes those elements. It also includes other elements that are not explicitly listed, or elements that are inherent to such a process, method, article, or device. An element that is defined by the phrase "comprising a ..." does not exclude the presence of additional equivalent elements in the process, method, item, or device that comprises the element.

The serial numbers of the embodiments of the present invention are merely for the description, and do not represent the advantages and disadvantages of the embodiments.

Through the description of the above embodiments, those skilled in the art can clearly understand that the foregoing embodiment method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be through hardware, but in many cases, the former is better. Implementation. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk, The optical disc includes a number of instructions for causing a terminal device (which may be a cell phone, computer, device, air conditioner, or network device, etc.) to perform the methods described in various embodiments of the present invention.

The above are only the preferred embodiments of the present invention, and are not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformations made by the description of the present invention and the drawings are directly or indirectly applied to other related technical fields. All are included in the scope of patent protection of the present invention.

Claims (20)

A data transmission method is applied to a user equipment, and the method includes: Determine the data packet to be sent; Determining, according to the number of transmissions of the data packet, a preamble sequence corresponding to the data packet; Sending the preamble sequence corresponding to the data packet and the data packet to the base station side. The method of claim 1 wherein the method further comprises: Detecting feedback information sent by the base station side; Extracting an index number of the preamble sequence from the feedback information, and determining, according to the index number, a receiving state of the data packet corresponding to the feedback information; wherein the receiving state characterizing the data packet on the base station side Whether the test was successful. The method according to claim 1 or 2, wherein the determining the preamble sequence corresponding to the data packet based on the number of transmissions of the data packet comprises: When the number of transmissions of the data packet is N, the preamble sequence used when the number of transmissions is M is obtained as a reference preamble sequence; wherein N and M are both positive numbers, and N is greater than or equal to M ; Determining, according to the N and M, a number of cyclic shifts K corresponding to the reference preamble sequence; wherein K is an integer; The reference preamble sequence is cyclically shifted K times to obtain a preamble sequence required when the number of transmissions of the data packet is N. The method according to claim 1 or 2, wherein the determining the preamble sequence corresponding to the data packet based on the number of transmissions of the data packet comprises: Determining the number of transmissions N of the data packet; wherein N is an integer; Obtaining, according to the number of transmissions N, an index number of the corresponding preamble sequence from the preamble sequence index table, where the preamble sequence index table includes a correspondence between the number of transmissions and the index number of the preamble sequence ; Determining a corresponding preamble sequence based on an index number of the preamble sequence, and determining the preamble sequence as a preamble sequence corresponding to the Nth transmission of the data packet. A data receiving method is applied to a base station, and the method includes: Receiving a data packet sent by the user equipment and a preamble sequence corresponding to the data packet; Determining, according to the preamble sequence, the number of transmissions corresponding to the received data packet. The method of claim 5 wherein the method further comprises: Detecting the data packet to obtain a detection result; Obtaining an index number of the preamble sequence, and generating feedback information based on the detection result and an index number of the preamble sequence; Sending the feedback information to the user equipment. The method according to claim 5 or 6, wherein the receiving the data packet sent by the user equipment and the preamble sequence corresponding to the data packet, the method further includes: Comparing the extracted preamble sequence with at least one preset preamble sequence in the preset preamble sequence set saved by itself to obtain a reference preset preamble sequence; Determining, according to the reference preset preamble sequence, a number of cyclic shifts of the extracted preamble sequence; And determining, according to the number of cyclic shifts, the number of transmissions corresponding to the data packet. The method according to claim 5 or 6, wherein, when the data packet sent by the user equipment and the preamble sequence corresponding to the data packet are received, the method further includes: Comparing the extracted preamble sequence with the pre-preset pre-sequence sequence saved by itself to obtain a corresponding reference preset pre-sequence sequence; And determining, according to the index number corresponding to the reference preset preamble sequence, the number of transmissions of the data packet. A user equipment, the user equipment comprising: a processing unit configured to determine a data packet to be sent; a sequence determining unit, configured to determine a preamble sequence corresponding to the data packet based on a number of transmissions of the data packet; The communication unit is configured to send the preamble sequence corresponding to the data packet and the data packet to the base station side. A user equipment, the user equipment comprising: a first processor, configured to determine a data packet to be sent, and determine a preamble sequence corresponding to the data packet based on a number of transmissions of the data packet; The first communication interface is configured to send the preamble sequence corresponding to the data packet and the data packet to the base station side. The user equipment according to claim 10, wherein a first processor, configured to detect feedback information sent by the base station, extract an index number of the preamble sequence from the feedback information, and determine, according to the index number, a data packet corresponding to the feedback information a state, wherein the receiving state characterizes whether the data packet is detected successfully on the base station side. The user equipment according to claim 10 or 11, wherein The first processor is configured to: when the number of transmissions of the data packet is N, obtain a preamble sequence used by the data packet when the number of transmissions is M, as a reference preamble sequence; wherein, N and M are both Is a positive number, and N is greater than or equal to M; Determining, according to the N and M, a number of cyclic shifts K corresponding to the reference preamble sequence; wherein K is an integer; The reference preamble sequence is cyclically shifted K times to obtain a preamble sequence required when the number of transmissions of the data packet is N. The user equipment according to claim 10 or 11, wherein The first processor is configured to determine a number N of transmissions of the data packet, where N is an integer; Obtaining, according to the number of transmissions N, an index number of the corresponding preamble sequence from the preamble sequence index table, where the preamble sequence index table includes a correspondence between the number of transmissions and the index number of the preamble sequence ; Determining a corresponding preamble sequence based on an index number of the preamble sequence, and determining the preamble sequence as a preamble sequence corresponding to the Nth retransmission of the data packet. A base station, the base station comprising: a receiving unit, configured to receive a data packet sent by the user equipment and a preamble sequence corresponding to the data packet; And a detecting unit, configured to determine, according to the preamble sequence, a number of transmissions corresponding to the received data packet. A base station, the base station comprising: a second communication interface, configured to receive a data packet sent by the user equipment and a preamble sequence corresponding to the data packet; The second processor is configured to determine, according to the preamble sequence, the number of transmissions corresponding to the received data packet. The base station according to claim 15, wherein the second communication interface is configured to send the feedback information to the user equipment; Correspondingly, the second processor is configured to detect the data packet to obtain a detection result, obtain an index number of the preamble sequence, and generate feedback based on the detection result and an index number of the preamble sequence. information. The base station according to claim 15 or 16, wherein the second processor is configured to perform the extracted preamble sequence with at least one preset preamble sequence in the preset preamble sequence set saved by itself. Comparing, the reference preset preamble sequence is obtained; determining, according to the reference preset preamble sequence, the number of cyclic shifts of the extracted preamble sequence; determining, according to the cyclic shift number, the data packet The number of transmissions. The base station according to claim 15 or 16, wherein the second processor is configured to compare the extracted preamble sequence with a preset preamble sequence set saved by itself to obtain a corresponding reference preset. a sequence of sequences; determining a number of transmissions of the data packet based on an index number corresponding to the reference preset preamble sequence. A communication device comprising: a processor and a memory for storing a computer program executable on the processor, Wherein the processor is operative to perform the steps of the method of any one of claims 1-8 when the computer program is run. A storage medium storing computer executable instructions that, when executed, implement the method steps of any of claims 1-8.

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