CN119485728A

CN119485728A - A direct link transmission method, device and storage medium

Info

Publication number: CN119485728A
Application number: CN202311013230.7A
Authority: CN
Inventors: 丁金明; 任晓涛; 李书朋
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2023-08-11
Filing date: 2023-08-11
Publication date: 2025-02-18

Abstract

The present application provides a direct link transmission method, device and storage medium, which relate to the field of communication technology. The method of the present application includes: the terminal obtains the power allocation information of the physical direct link feedback channel PSFCH; the terminal sends the PSFCH carrying feedback information according to the power allocation information; wherein the power allocation information includes at least one of the following: first information, the first information is the power allocation information of the physical resource block PRB in the PSFCH; second information, the second information is the power allocation information of the PSFCH of different carriers at the same time. The scheme of the present application realizes SL feedback in the carrier aggregation scenario.

Description

Straight-through link transmission method, device and storage medium

Technical Field

The present application relates to the field of communications technologies, and in particular, to a direct link transmission method, device, and storage medium.

Background

Carrier aggregation (Carrier Aggregation, CA) is a technique for improving the data transmission rate of users and reducing delay by integrating radio channel resources within or between frequency bands. The CA technology can aggregate a plurality of member carriers (Component Carrier, CC) together, realize larger transmission bandwidth, effectively improve uplink and downlink transmission rate, and the terminal can simultaneously utilize a plurality of carriers to perform uplink and downlink transmission at most according to the capacity of the terminal.

However, the existing CA technology is mainly aimed at air interface transmission, and with the deep research on a new radio access technology (New Radio access technology, NR) through link (SL), how to perform feedback of the SL to adapt to the carrier aggregation scenario needs has become a technical problem to be solved.

Disclosure of Invention

The application aims to provide a direct link transmission method, a direct link transmission device and a storage medium, which can realize SL feedback of a carrier aggregation scene.

In order to achieve the above object, an embodiment of the present application provides a method for transmitting a through link, including:

the terminal obtains the power distribution information of the physical direct link feedback channel PSFCH;

The terminal sends PSFCH carrying feedback information according to the power distribution information;

Wherein the power allocation information includes at least one of:

First information, wherein the first information is power allocation information of Physical Resource Blocks (PRBs) in PSFCH;

And second information, wherein the second information is power allocation information of PSFCH at the same time of different carriers.

Optionally, the terminal sends PSFCH carrying feedback information according to the power allocation information, including:

the terminal determines the transmission power of PSFCH according to the power distribution information;

and the terminal transmits PSFCH according to the transmission power.

Optionally, the terminal determines the transmission power of PSFCH according to the power allocation information, including at least one of the following:

The terminal determines a first sending power of the PRB in PSFCH based on the first information, wherein feedback information borne by the PRB corresponds to at least one of a physical through link control channel PSCCH and a physical through link shared channel PSSCH;

the terminal determines a second transmitting power of PSFCH based on the second information;

the terminal adjusts the first transmission power based on the second transmission power.

Optionally, at least one PSFCH carries feedback information corresponding to multiple PSCCHs and/or PSSCHs, or each PSFCH carries feedback information corresponding to a PSCCH and/or PSSCH one-to-one.

Optionally, PSFCH is PSFCH on at least one adjacent component carrier, or

The PSFCH is PSFCH that occupies multiple orthogonal frequency division multiplexing OFDM symbols on the same carrier.

Optionally, the terminal obtains PSFCH power allocation information, including at least one of the following:

the terminal receives the power allocation information carried by the high-layer signaling;

The terminal determines the power distribution information according to the channel state;

And the terminal determines the power distribution information according to the service priority.

Optionally, the channel state includes channel quality information between the terminal and a communication object.

In order to achieve the above object, an embodiment of the present application further provides a through link transmission device, which includes a memory, a transceiver, and a processor, wherein the processor is configured to store program instructions, the transceiver is configured to send and receive data under the control of the processor, and the processor is configured to read the program instructions in the memory and perform the following operations:

acquiring power allocation information of a physical direct link feedback channel PSFCH;

the transceiver is further configured to send PSFCH carrying feedback information according to the power allocation information;

Wherein the power allocation information includes at least one of:

Optionally, the processor is further configured to determine, according to the power allocation information, a transmission power of the PSFCH;

The transceiver is also configured to transmit the PSFCH in accordance with the transmit power.

Optionally, the processor is further configured to at least one of:

determining a first sending power of the PRB in PSFCH based on the first information, wherein feedback information borne by the PRB corresponds to at least one of a physical through link control channel PSCCH and a physical through link shared channel PSSCH;

Determining a second transmit power of the PSFCH based on the second information;

and adjusting the first transmission power based on the second transmission power.

Optionally, PSFCH is PSFCH on at least one adjacent component carrier, or

Optionally, the processor is further configured to at least one of:

Receiving the power allocation information carried by the high-layer signaling;

determining the power allocation information according to the channel state;

And determining the power allocation information according to the service priority.

In order to achieve the above object, an embodiment of the present application further provides a through link transmission device, including:

The acquisition module is used for acquiring the power distribution information of the physical direct link feedback channel PSFCH;

a sending module, configured to send PSFCH carrying feedback information according to the power allocation information;

Wherein the power allocation information includes at least one of:

To achieve the above object, an embodiment of the present application further provides a processor-readable storage medium storing program instructions for causing the processor to execute the through link transmission method as described above.

The technical scheme of the application has at least the following beneficial effects:

In the above technical solution of the embodiment of the present application, the terminal can learn one or more of the power allocation information of the PRB in PSFCH and the power allocation information of PSFCH of different carriers at the same time by acquiring the power allocation information of PSFCH, so that PSFCH carrying feedback information is sent according to the power allocation information, and stable transmission of PSFCH carrying feedback information is ensured.

Drawings

FIG. 1 is a flow chart of a method according to an embodiment of the application;

FIG. 2 is a schematic diagram of an application of first information;

FIG. 3 is a schematic diagram of an application of second information;

FIG. 4 is a schematic diagram of centralized feedback;

FIG. 5 is a schematic diagram of independent feedback;

fig. 6 is a schematic diagram of PSFCH using adjacent component carriers;

Fig. 7 is a schematic diagram of PSFCH occupying consecutive OFDM symbols;

fig. 8 is a diagram illustrating power allocation of different PRBs of the same carrier PSFCH by a higher layer;

fig. 9 is a schematic diagram illustrating power allocation of different PRBs of the same carrier PSFCH according to service priority;

Fig. 10 is a schematic diagram illustrating power allocation of different PRBs of the same carrier PSFCH affected by a channel state;

fig. 11 is a diagram illustrating power allocation of PSFCH for different carriers at the same time by a higher layer;

FIG. 12 is a block diagram of an apparatus according to an embodiment of the present application;

Fig. 13 is a schematic block diagram of an apparatus according to an embodiment of the present application.

Detailed Description

In the embodiment of the application, the term "and/or" describes the association relation of the association objects, which means that three relations can exist, for example, A and/or B, and can mean that A exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.

The term "plurality" in embodiments of the present application means two or more, and other adjectives are similar.

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

In order to enable those skilled in the art to better understand the embodiments of the present application, the following description is first provided:

1. Carrier aggregation

In the original long term evolution (Long Term Evolution, LTE) technology, the channel bandwidth size defined for each user contains 1.4, 3, 5, 10, 15, 20MHz. With the continuous development of mobile internet technology, mobile content needs move from text to graphics and text to short video, and user bandwidths defined by early LTE standards have been difficult to meet the increasing data traffic demands of users. According to shannon's formula, under an Additive White Gaussian Noise (AWGN) channel, the channel capacity C of a communication system can be expressed as:

wherein W is the channel bandwidth in hertz (Hz), S is the signal power in watts, and N is the noise power in watts.

In order to pursue higher channel capacity, increasing the channel bandwidth is a viable solution, but existing mobile communication band resources are very limited, and obtaining a large bandwidth for the repartition of the existing band may result in the failure of the legacy device. Therefore, in order to ensure compatibility with the Advanced standard, the LTE-Advanced standard proposes a new carrier aggregation technology, and attempts to solve the problem of limited communication rate of users in LTE by integrating and allocating idle multiple frequency band resources to the same user based on the existing LTE standard, so as to provide a higher peak transmission rate and up to 100MHz bandwidth for the user.

The CA principle of the NR system is basically the same as that of the LTE system, but the NR has wider bandwidth, so that the carrier aggregation effect is better, and the wider frequency spectrums are aggregated, so that an operator can provide faster speed.

Carrier aggregation can be roughly classified into three types, i.e., intra-band continuous carrier aggregation (Intra-band Contiguous Carrier Aggregation), intra-band discontinuous carrier aggregation (Intra-band Non-contiguous Carrier Aggregation), and Inter-band discontinuous carrier aggregation (Inter-band Non-contiguous Carrier Aggregation), according to the distribution positions of different component carriers in carrier aggregation.

The implementation of in-band continuous carrier aggregation is relatively simple, but is also a carrier aggregation mode with relatively strict requirements on frequency band resources, carrier frequency bands to be aggregated need to be adjacent, and the LTE-Advanced standard requires that the center frequency interval of member carriers used by this type of carrier aggregation is an integer multiple of 300 kHz. While in-band discontinuous and inter-band discontinuous carrier aggregation has less severe requirements on frequency band resources, more frequency bands can be selected, more problems need to be considered in actual system implementation and are relatively more complex.

2. SL resource allocation

SL resource allocation is mainly two ways, one is based on network scheduling, which is called mode1 (mode 1), and the other is that the terminal autonomously selects transmission resources, which is called mode2 (mode 2). The terminals may include SL terminals including mobile vehicles, among others.

For SL-CA, the carrier aggregation process of the mode 1 scene is uniformly scheduled by a base station, and the mode 2 scene is determined by the UE capability of the receiving and transmitting ends.

When the LTE/NR Uu CA procedure is directly introduced into SL, there are the following drawbacks:

1. the Feedback of each member carrier is independent and there is no physical direct link Feedback Channel (PHYSICAL SIDELINK Feedback Channel, PSFCH) power control method, and additional signaling is needed to instruct the processing of each carrier PSFCH, which increases the UE power consumption and has lower efficiency.

The uu CA scheme is not applicable to PSFCH channels of NR SL (especially mode 2 scenario).

The embodiment of the application provides a direct link transmission method, a direct link transmission device and a storage medium. The method and the device are based on the same application, and because the principles of solving the problems by the method and the device are similar, the implementation of the device and the method can be referred to each other, and the repetition is not repeated.

As shown in fig. 1, a through link transmission method provided by an embodiment of the present application includes:

Step 101, a terminal obtains power allocation information of a physical through link feedback channel PSFCH, wherein the power allocation information includes at least one of the following:

In this step, the terminal may acquire at least one of the power allocation information of the PRB in PSFCH and the power allocation information of PSFCH of different carriers at the same time by acquiring the power allocation information of PSFCH.

Step 102, the terminal sends PSFCH carrying feedback information according to the power allocation information.

Therefore, according to the steps 101 and 102, the terminal can learn one or more of the power allocation information of the PRB in PSFCH and the power allocation information of PSFCH of different carriers at the same time by acquiring the power allocation information of PSFCH, so that PSFCH carrying feedback information is sent according to the power allocation information, and stable transmission of PSFCH carrying feedback information is ensured.

Specifically, in the SL-CA scenario, the terminal applies the method of the embodiment of the present application, and sends PSFCH carrying feedback information based on the obtained PSFCH power allocation information.

Alternatively, the first information may be a specific power value allocated for each PRB in PSFCH, for example, the power of PRB1 is A1, the power of PRB1 is A2, and so on. Or the first information may be a power allocation proportion for all PRBs in PSFCH, and the terminal needs to further determine the first transmission power of each PRB in combination with its own capability. Similarly, the second information may be a specific power value allocated for the same time PSFCH of different carriers, or a power allocation ratio for the same time PSFCH of different carriers, which is not described herein.

Alternatively, the first information may be power allocation information for PRBs of the same time unit (e.g., symbol) PSFCH within one carrier. For example, as shown in fig. 2, since there may be a cross-carrier indication (i.e., a physical through link Control Channel (PSCCH) scheduling a physical through link shared Channel (PHYSICAL SIDELINK SHARED CHANNEL) across carriers) in SL-CA, the first information performs power allocation on different PRBs in one carrier PSFCH, so that the PSFCH may feed back to different terminals, so that the terminals can learn feedback information even if the terminals correspond to different path loss, traffic class, and so on.

Of course, the first information of different carriers may be the same or different.

Alternatively, the second information may be power allocation information for PSFCH at the same time of different carriers (which may be intra-band carrier aggregation or inter-band carrier aggregation) of component carriers belonging to one SL-CA. For example, as shown in fig. 3, two carriers (carrier 1 and carrier 2) belong to the same component carrier of one SL-CA, and the second information uniformly allocates power of PSFCH transmitted by carrier 1 and carrier 2 at the same time.

Optionally, in this embodiment, the sending PSFCH, which carries feedback information, by the terminal according to the power allocation information includes:

and the terminal transmits PSFCH according to the transmission power.

That is, after the terminal acquires PSFCH power allocation information, it can further determine PSFCH transmission power, and then transmit PSFCH carrying feedback information according to the transmission power.

That is, PSFCH carrying feedback information is transmitted, the PSFCH may be transmitted using a first transmit power, or the PSFCH may be transmitted using a second transmit power.

As an alternative embodiment, the first transmission power may be determined based on only the first information and then the PSFCH may be transmitted using the first transmission power. At this time, PRBs in PSFCH are transmitted with the respective first transmission powers.

As an alternative embodiment, the second transmission power may be determined based on the second information and then the PSFCH may be transmitted using the second transmission power. At this time, the transmission power of the PRB in PSFCH may be equally allocated according to the second transmission power or allocated in a default ratio.

As an alternative embodiment, the first transmission power may be determined based on the first information, the second transmission power may be determined based on the second information, and then the first transmission power may be adjusted based on the second transmission power, and the PSFCH may be transmitted using the adjusted first transmission power. At this time, PRBs in PSFCH are transmitted with the adjusted first transmission powers, respectively. After determining the first transmission power of the PRB in a certain PSFCH based on the first information, the expected power of the PSFCH can be obtained by using each first transmission power, and the second transmission power allocated to the PSFCH can be determined based on the second information, so that, if the expected power and the second transmission power are different, the first transmission power is adjusted based on the second transmission power, for example, the first transmission power of the PRB is adjusted in equal proportion.

Of course, in this embodiment, since there is a limit on the transmission power of the terminal at the same time, the total value of the transmission powers of all PSFCH transmitted by the terminal at the same time must not exceed the maximum power P _max,PSFCH, and the terminal needs to reduce the power consumption as much as possible on the premise of ensuring the communication quality, and perform the same power scheduling on the transmission powers of all PSFCH transmitted at the same time based on the power allocation ratio indicated by the power allocation information.

Optionally, in this embodiment, at least one of the PSFCH carries feedback information corresponding to multiple PSCCHs and/or PSSCHs, or each of the PSFCH carries feedback information corresponding to a PSCCH and/or PSSCH one-to-one.

That is, feedback information corresponding to a plurality of PSCCHs and/or PSSCHs may be fed back in a centralized manner, or feedback information corresponding to each PSCCH and/or PSSCH may be fed back independently. Wherein the feedback information is a hybrid automatic repeat request (Hybrid Automatic Repeat reQuest, HARQ).

Specifically, the PSCCH and/or PSSCH are located in different carriers, and the centralized feedback may be understood as centralized feedback of all carriers, that is, HARQ information of all carriers is centralized on PSFCH of one (or a few) carriers to perform feedback, as shown in fig. 4, so that feedback overhead of PSFCH may be reduced, and the centralized feedback may only need to receive one ACK to confirm that information transmission before N periods is successful (or each PRB may feedback ACK information separately, so that whole retransmission is not needed when failing). PSFCH may be 1 bit PSFCH, and only one ACK needs to be received to confirm that the transmission of the information before the N period is successful, and when the transmission fails, it cannot confirm which part of the transmission fails, and the whole retransmission is needed. If centralized feedback is used, when HARQ information of all carriers is centralized on PSFCH of one carrier for feedback, a single PSFCH may not be able to carry HARQ information of all carriers, so that PSFCH channels of adjacent component carriers may be used, and several PSFCH channels in succession in the frequency domain may be used to carry HARQ information of all carriers.

Independent feedback may be understood as independent feedback of each carrier, that is, each carrier carries PSFCH resources, as shown in fig. 5, and accordingly, all PSFCH are required to feedback ACKs to confirm successful transmission.

Of course, if cross-carrier scheduling exists in SL-CA, i.e. PSCCH of one carrier schedules PSCCH of other carriers, the centralized feedback may transmit PSCCH and/or PSCCH feedback information of a certain carrier in PSFCH of the other carriers.

Thus, optionally, in this embodiment, the PSFCH is PSFCH on at least one adjacent component carrier, or

Thus, for centralized feedback, when feedback information of all carriers is centralized to PSFCH of one carrier for feedback, PSFCH of one time unit (such as orthogonal frequency division multiplexing (Orthogonal frequency-division multiplexing, OFDM) symbol) may not be able to carry feedback information of all carriers, multiple PSFCH adjacent component carriers that can be used for centralized feedback carry feedback information of all carriers, or PSFCH occupying multiple OFDM symbols on the same carrier can be used for carrying feedback information of all carriers.

As an alternative implementation manner, when PSFCH is PSFCH on multiple adjacent component carriers, the PSFCH are continuous in the frequency domain or the interval is less than a preset threshold. For example, as shown in fig. 6, PSFCH of carrier 1 cannot carry excessive HARQ information (or carrier 1 does not transmit PSFCH), so PSSCH of carrier 1 needs to be fed back in PSFCH of carrier 2.

As an alternative implementation manner, when PSFCH is PSFCH that occupies multiple OFDM symbols on the same carrier, the OFDM symbols are consecutive in time domain, for example, as shown in fig. 7, the OFDM symbols occupy PSFCH of more OFDM symbols (e.g., 4 symbols, where the first symbol is automatic gain control (Automatic Gain Control, AGC) and the other three symbols carry HARQ information), so as to ensure that there are enough bits to carry all HARQ information.

Optionally, in this embodiment, the terminal obtains PSFCH power allocation information, including at least one of the following:

That is, the terminal may determine PSFCH the power allocation information based on one or more of higher layer signaling, channel state, traffic priority. Of course, the determination of PSFCH power allocation information may also be determined in combination with other information, such as signal types, etc., which are not listed here.

Optionally, the higher layer signaling is through link control information (Sidelink Control Information, SCI) or downlink control information (Downlink Control Information, DCI). For example, in the mode 1 scenario, PSFCH power allocation information is indicated by the base station using DCI, and in the mode 2 scenario, PSFCH power allocation information is indicated by the SCI.

Optionally, the channel state includes channel quality information between the terminal and a communication object. For example, the terminal may allocate a higher transmit power for PSFCH over a communication link with lower channel quality information (e.g., greater path loss). Of course, the channel state also includes other channel environment parameters, which are not listed here.

In this embodiment, if the terminal determines the power allocation information according to the service priority, the terminal may perform power division according to the service priority, and the service with a high priority uses a larger power for feedback, thereby ensuring stable transmission of the service with a high priority.

Alternatively, the traffic priority may be implicitly indicated by the traffic type.

Alternatively, PSFCH power allocation information may be statically configured or may be dynamically adjusted.

As an alternative implementation, feedback transmission is performed according to PSFCH power allocation information configured during PSCCH/PSSCH transmission, and the period is not changeable. Wherein the status of the static configuration may be indicated in a preconfigured manner.

As an alternative implementation, the power allocation information PSFCH may change over time according to changes in one or more of higher layer signaling, channel state, traffic priority. For example, the terminal may update PSFCH the power allocation information at any time with the change of the channel state, and for example, the power allocation information of PSFCH carried by the higher layer signaling is received last time, the power allocation information of PSFCH carried by the higher layer signaling before the last time is replaced, or the power allocation information of PSFCH is determined by the terminal based on the channel state and/or the service priority before the replacement.

It should be appreciated that the number of PSFCH simultaneous transmissions by the terminal does not exceed the maximum PSFCH transmission number N _max,PSFCH of the higher layer configuration.

The application of the method according to the embodiment of the present application is described below in conjunction with a specific scenario:

Scene one, high-level indication of power allocation of different PRBs of the same carrier PSFCH

The terminal receives the first information directly indicated by the higher layer signaling, namely the transmission power of PSFCH PRB corresponding to each PSCCH/PSSCH. In the mode 1 scenario, the first information is carried by DCI sent directly by the gNB, and in the mode 2 scenario, the first information is carried by SCI of 2 nd order. As shown in fig. 8, the higher layer signaling instructs the PSSCHs 1 to 4 to feed back using PRBs 1 to 4, respectively, and specifies the corresponding powers, respectively.

Scene two, carrying out power allocation of different PRBs of the same carrier PSFCH according to service priority

The terminal may determine the first information according to the service priority, that is, allocate the transmission power of PSFCH PRB corresponding to each PSCCH/psch.

As shown in fig. 9, the UE may determine the first information according to the signal type and traffic priority, that is, power allocation to different PRBs. For example, the PSCCH signal contains a 1st SCI indication, the priority is higher, so that the corresponding PRB M/N can be allocated with higher power, in PSSCH 1-4, the former two bear security services, the latter two bear entertainment services such as XR, and the like, so that the PSSCH 1/2 has higher priority, and the corresponding PRB1/2 is allocated with higher transmitting power.

Meanwhile, the transmitting end also needs to ensure that the transmitting power does not exceed the maximum transmitting power, and the number of the transmissions PSFCH does not exceed the maximum PSFCH transmission number N _max,PSFCH configured by the higher layers.

Scene three, channel state affects power allocation of different PRBs of the same carrier PSFCH

The terminal may determine the first information according to the channel state (such as channel quality information where different feedback targets are located), that is, allocate the transmission power of PSFCH PRB corresponding to each PSCCH/psch.

As shown in fig. 10, PSSCH 1/2, 3/4, 5/6 are transmitted in different time slots, and the communication objects are UE1, UE2, and UE3, which are fed back in one PSFCH at the same time, so that the power required for PRB 1/2, PRB 3/4, and PRB M/N transmission is different, and the transmitting end performs power allocation according to the channel quality information (such as interference signal to noise ratio (Signal to Interference plus Noise Ratio, SINR)) of the three.

For example, the transmitting end performs SINR measurement on signals received from UE1, UE2 and UE3, and the higher the SINR, the better the channel quality, and correspondingly, lower transmission power can be allocated, so as to ensure normal reception of PSFCH.

PSFCH power allocation of different carriers at the same time indicated by scene four and high layer

The terminal receives second information directly indicated by the higher layer signaling, namely the transmission power of PSFCH corresponding to each carrier. When two carriers belong to the same component carrier of one SL-CA (may be in-band carrier aggregation or inter-band carrier aggregation), PSFCH powers transmitted by different carriers at the same time may be uniformly allocated.

The PSFCH power allocations for the different carriers may be indicated with higher layer signaling, in the mode 1 scenario this second information is carried by the gcb sending DCI directly, and in the mode 2 scenario this second information is carried by the SCI. As shown in fig. 11, two PSFCH channels respectively belong to different component carriers in the same SL-CA, and PSCCH may directly indicate power allocation of two PSFCH at a certain moment by carrying second information. This indication pertains to cross-carrier scheduling.

The first transmit power of the PRBs in PSFCH, i.e. the expected power of each PSFCH, may be determined from the first information before PSFCH power allocations for different carriers at the same time are determined. In this way, after the second transmission power of PSFCH is determined by the second information, the entire PSFCH power may be adjusted, and all PRB powers therein may be increased or decreased in equal proportion, and it is ensured that the total transmission power does not exceed the maximum transmission power of the system.

Scene five, carrying out PSFCH power allocation of different carriers at the same time according to service priority

The terminal may determine the second information according to the traffic priority, i.e., allocate the transmission power of each PSFCH.

The UE may perform power allocation on PSFCH transmitted by different carriers at the same time according to the signal type and service priority, for example, PSFCH 1 and PSFCH simultaneously transmitted at a certain time respectively bear feedback information of PSSCH 1 and PSSCH 2, where PSSCH 1 bears security service and PSSCH 2 bears entertainment service such as XR, so that the PSSCH 1 has a higher priority and the corresponding PSFCH 1 will also have a higher allocated transmission power.

PSFCH power allocation of different carriers at the same time under six scenarios and channel environment influence

The terminal may determine the second information according to the channel state (e.g., channel quality information where different feedback targets are located), that is, allocate the transmission power of each PSFCH.

It is assumed that UE1 and UE2 are in the same direction of the base station, but have different distances, and the channel environments of the two are different, so that it is necessary to transmit PSFCH to UE1 and UE2 using different carriers at the same time, and at this time, the transmission powers of the two PSFCH should be determined by the channel states. For example, power allocation may be performed according to SINR, where the transmitting end performs SINR measurement on signals received from UE1 and UE2, where a higher SINR indicates a better channel quality, and accordingly, lower transmission power may be allocated, so that normal reception of PSFCH may be ensured.

Power allocation information for scenario seven, static configuration PSFCH

The static configuration may be feedback transmission according to the first information and/or the second information configured at the time of PSCCH/PSSCH transmission, and may be unchanged during the feedback transmission, and may be indicated in a preconfigured manner.

For example, in a SL-CA transmission for a mode 1 scenario, the gNB may set PSFCH power allocation information to be indicated by the higher layer when the PSCCH is transmitted, with all PSFCH power being determined by the gNB.

Scene eight, dynamic adjustment PSFCH of power allocation information

The dynamic adjustment means that in the service transmission process, the first information and/or the second information can change at any time according to the high-layer signaling, the channel state and the service priority.

For example, in the SL-CA transmission in the mode 2 scenario, the transmitting UE may determine the power allocation information of the dynamic adjustment PSFCH when the PSCCH is transmitted, and when the PSCCH is not in the coverage area of the base station, the transmitting UE may determine PSFCH the power allocation information according to the service priority or the channel state (the two indexes may occupy different weights and jointly affect the power allocation of PSFCH), and when one of the two parties enters the coverage area of the base station, the transmitting UE may switch to the power allocation indicated by the higher layer at any time.

In summary, according to the method of the embodiment of the present application, the terminal obtains the power allocation information of PSFCH, so that the terminal can know one or more of the power allocation information of the PRB in PSFCH and the power allocation information of PSFCH at the same time of different carriers, thereby sending PSFCH carrying feedback information according to the power allocation information, and ensuring stable transmission of PSFCH carrying feedback information.

As shown in fig. 12, the embodiment of the present application further provides a through link transmission apparatus, which includes a memory 1220, a transceiver 1210, a processor 1200, a memory 1220 for storing program instructions, a transceiver 1210 for receiving and transmitting data under the control of the processor 1200, and a processor 1200 for reading the program instructions in the memory 1220 and performing the following operations:

the transceiver 1210 is further configured to send PSFCH carrying feedback information according to the power allocation information;

Wherein the power allocation information includes at least one of:

Wherein in fig. 12, a bus architecture may comprise any number of interconnected buses and bridges, and in particular, one or more processors represented by processor 1200 and various circuits of memory represented by memory 1220, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 1210 may be a number of elements, including a transmitter and a receiver, providing a means for communicating with various other apparatus over transmission media, including transmission media including wireless channels, wired channels, optical cables, and the like. The user interface 1230 may also be an interface capable of interfacing with an inscribed desired device for a different user device, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 1200 is responsible for managing the bus architecture and general processing, and the memory 1220 may store data used by the processor 1200 in performing operations.

Alternatively, the processor 1200 may be a CPU (central processing unit), an ASIC (Application SPECIFIC INTEGRATED Circuit), an FPGA (Field-Programmable gate array) or a CPLD (Complex Programmable Logic Device ), and the processor 1200 may also employ a multi-core architecture.

Processor 1200 is operative to perform any of the methods provided in embodiments of the present application in accordance with the obtained executable instructions by invoking program instructions stored in memory. Processor 1200 and memory 1220 may also be physically separate.

Optionally, the processor is further configured to at least one of:

Optionally, PSFCH is PSFCH on at least one adjacent component carrier, or

Optionally, the processor is further configured to at least one of:

Receiving the power allocation information carried by the high-layer signaling;

determining the power allocation information according to the channel state;

According to the device provided by the embodiment of the application, one or more of the power distribution information of PRB in PSFCH and the power distribution information of PSFCH at the same time of different carriers can be known by acquiring the power distribution information of PSFCH, so that PSFCH carrying feedback information is sent according to the power distribution information, and stable transmission of PSFCH carrying the feedback information is ensured.

It should be noted that, the above device provided in the embodiment of the present application can implement all the method steps implemented in the method embodiment and achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those in the method embodiment in this embodiment are omitted.

As shown in fig. 13, the implementation of the present application further provides a through link transmission device, including:

an obtaining module 1310, configured to obtain power allocation information of the physical through link feedback channel PSFCH;

a sending module 1320, configured to send PSFCH carrying feedback information according to the power allocation information;

Wherein the power allocation information includes at least one of:

Optionally, the sending module is further configured to:

determining the transmission power of PSFCH according to the power allocation information;

And transmitting PSFCH according to the transmission power.

Optionally, the sending module is further configured to at least one of:

Optionally, PSFCH is PSFCH on at least one adjacent component carrier, or

Optionally, the obtaining module is further configured to at least one of:

Receiving the power allocation information carried by the high-layer signaling;

determining the power allocation information according to the channel state;

In some embodiments of the present application, there is also provided a processor-readable storage medium storing program instructions for causing the processor to perform the steps of:

According to the power allocation information, PSFCH carrying feedback information is sent;

Wherein the power allocation information includes at least one of:

Optionally, the transmitting PSFCH carrying feedback information according to the power allocation information includes:

And transmitting PSFCH according to the transmission power.

Optionally, the determining the transmission power of PSFCH according to the power allocation information includes at least one of:

Optionally, PSFCH is PSFCH on at least one adjacent component carrier, or

Optionally, the acquiring PSFCH the power allocation information includes at least one of:

Receiving the power allocation information carried by the high-layer signaling;

determining the power allocation information according to the channel state;

The program instructions, when executed by the processor, can implement all the implementation manners described above in the embodiment of the method applied to the terminal side as shown in fig. 1, and are not repeated here.

The technical scheme provided by the embodiment of the application can be suitable for various systems, in particular to a 5G system. For example, applicable systems may be global system for mobile communications (Global System of Mobile communication, GSM) system, code division multiple access (Code Division Multiple Access, CDMA) system, wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) General Packet Radio Service (GPRS) system, long term evolution (Long Term Evolution, LTE) system, LTE frequency division duplex (Frequency Division Duplex, FDD) system, LTE time division duplex (Time Division Duplex, TDD) system, long term evolution-advanced (Long Term Evolution Advanced, LTE-a) system, universal mobile system (Universal Mobile Telecommunication System, UMTS), worldwide interoperability for microwave access (Worldwide interoperability for Microwave Access, wiMAX) system, 5G New air interface (New Radio, NR) system, etc. Terminal devices and network devices are included in these various systems. Core network parts may also be included in the system, such as Evolved packet system (Evolved PACKET SYSTEM, EPS), 5G system (5 GS), etc.

The terminal device according to the embodiment of the present application may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem, etc. The names of the terminal devices may also be different in different systems, for example in a 5G system, the terminal devices may be referred to as User Equipment (UE). The wireless terminal device may communicate with one or more Core Networks (CNs) via a radio access Network (Radio Access Network, RAN), which may be mobile terminal devices such as mobile phones (or "cellular" phones) and computers with mobile terminal devices, e.g., portable, pocket, hand-held, computer-built-in or vehicle-mounted mobile devices that exchange voice and/or data with the radio access Network. Such as Personal communication services (Personal Communication Service, PCS) phones, cordless phones, session initiation protocol (Session Initiated Protocol, SIP) phones, wireless local loop (Wireless Local Loop, WLL) stations, personal digital assistants (Personal DIGITAL ASSISTANT, PDA) and the like. The wireless terminal device may also be referred to as a system, subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile station), remote station (remote station), access point (access point), remote terminal device (remote terminal), access terminal device (ACCESS TERMINAL), user terminal device (user terminal), user agent (user agent), user equipment (user device), and embodiments of the present application are not limited.

The network device according to the embodiment of the present application may be a base station, where the base station may include a plurality of cells for providing services for the terminal. A base station may also be called an access point or may be a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminal devices, or other names, depending on the particular application. The network device may be configured to exchange received air frames with internet protocol (Internet Protocol, IP) packets as a router between the wireless terminal device and the rest of the access network, which may include an Internet Protocol (IP) communication network. The network device may also coordinate attribute management for the air interface. For example, the network device according to the embodiment of the present application may be a network device (Base Transceiver Station, BTS) in a global system for mobile communications (Global System for Mobile communications, GSM) or code division multiple access (Code Division Multiple Access, CDMA), a network device (NodeB) in a wideband code division multiple access (Wide-band Code Division Multiple Access, WCDMA), an evolved network device (evolutional Node B, eNB or e-NodeB) in a long term evolution (Long Term Evolution, LTE) system, a 5G base station (gNB) in a 5G network architecture (next generation system), a home evolved base station (Home evolved Node B, heNB), a relay node (relay node), a home base station (femto), a pico base station (pico), etc., which are not limited in the embodiment of the present application. In some network structures, the network device may include a Centralized Unit (CU) node and a Distributed Unit (DU) node, which may also be geographically separated.

Multiple-input Multiple-output (Multi Input Multi Output, MIMO) transmissions may be made between the network device and the terminal device, each using one or more antennas, and the MIMO transmissions may be Single User MIMO (SU-MIMO) or Multiple User MIMO (MU-MIMO). The MIMO transmission may be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, or may be diversity transmission, precoding transmission, beamforming transmission, or the like, depending on the form and number of the root antenna combinations.

It should be noted that, in the embodiment of the present application, the division of the units is schematic, which is merely a logic function division, and other division manners may be implemented in actual practice. In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a processor-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application. The storage medium includes a U disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, an optical disk, or other various media capable of storing program codes.

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. A direct link transmission method, characterized by comprising:

The terminal obtains power allocation information of the physical direct link feedback channel PSFCH;

The terminal sends a PSFCH carrying feedback information according to the power allocation information;

The power allocation information includes at least one of the following:

First information, wherein the first information is power allocation information of a physical resource block PRB in a PSFCH;

The second information is the power allocation information of the PSFCH of different carriers at the same time.

2. The method according to claim 1, wherein the terminal sends a PSFCH carrying feedback information according to the power allocation information, comprising:

The terminal determines the transmit power of the PSFCH according to the power allocation information;

The terminal sends the PSFCH according to the transmit power.

3. The method according to claim 2, wherein the terminal determines the transmit power of the PSFCH according to the power allocation information, including at least one of the following:

The terminal determines a first transmit power of a PRB in the PSFCH based on the first information; wherein the feedback information carried by the PRB corresponds to at least one of a physical direct link control channel PSCCH and a physical direct link shared channel PSSCH;

Determining, by the terminal, a second transmit power of the PSFCH based on the second information;

The terminal adjusts the first transmit power based on the second transmit power.

4. The method according to claim 1 is characterized in that at least one of the PSFCHs carries feedback information corresponding to multiple PSCCHs and/or PSSCHs; or each of the PSFCHs carries feedback information corresponding one-to-one to PSCCHs and/or PSSCHs.

5. The method according to claim 4, characterized in that the PSFCH is a PSFCH on at least one adjacent component carrier; or

The PSFCH is a PSFCH on the same carrier and occupies multiple orthogonal frequency division multiplexing OFDM symbols.

6. The method according to claim 1, wherein the terminal obtains the power allocation information of the PSFCH, including at least one of the following:

The terminal receives the power allocation information carried by high-layer signaling;

The terminal determines the power allocation information according to a channel state;

The terminal determines the power allocation information according to the service priority.

7. The method according to claim 6, characterized in that the channel status includes channel quality information between the terminal and the communication object.

8. A direct link transmission device, characterized in that it comprises: a memory, a transceiver, and a processor;

A memory for storing program instructions; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the program instructions in the memory and performing the following operations:

Obtain power allocation information of the physical direct link feedback channel PSFCH;

The transceiver is further used to: send a PSFCH carrying feedback information according to the power allocation information;

The power allocation information includes at least one of the following:

9. The device according to claim 8, characterized in that

The processor is further configured to: determine the transmit power of the PSFCH according to the power allocation information;

The transceiver is further configured to: transmit the PSFCH according to the transmit power.

10. The device according to claim 9, wherein the processor is further configured to perform at least one of the following:

Based on the first information, determining a first transmit power of a PRB in the PSFCH; wherein the feedback information carried by the PRB corresponds to at least one of a physical direct link control channel PSCCH and a physical direct link shared channel PSSCH;

Determine a second transmit power of the PSFCH based on the second information;

The first transmit power is adjusted based on the second transmit power.

11. The device according to claim 8 is characterized in that at least one of the PSFCHs carries feedback information corresponding to multiple PSCCHs and/or PSSCHs; or each of the PSFCHs carries feedback information corresponding one-to-one to a PSCCH and/or a PSSCH.

12. The apparatus according to claim 11, wherein the PSFCH is a PSFCH on at least one adjacent component carrier; or

13. The device according to claim 8, wherein the processor is further configured to perform at least one of the following:

Receiving the power allocation information carried by high-level signaling;

Determine the power allocation information according to the channel state;

The power allocation information is determined according to the service priority.

14. The device according to claim 13, characterized in that the channel status includes channel quality information between the terminal and the communication object.

15. A direct link transmission device, comprising:

An acquisition module, used to acquire power allocation information of a physical direct link feedback channel PSFCH;

A sending module, configured to send a PSFCH carrying feedback information according to the power allocation information;

The power allocation information includes at least one of the following:

16 . A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program, wherein the computer program is used to enable the processor to execute the direct link transmission method according to any one of claims 1 to 7.