CN115835381A

CN115835381A - Communication method and apparatus, computer-readable storage medium, and computer program product

Info

Publication number: CN115835381A
Application number: CN202111092370.9A
Authority: CN
Inventors: 陈咪咪; 张萌
Original assignee: Spreadtrum Communications Shanghai Co Ltd
Current assignee: Spreadtrum Communications Shanghai Co Ltd
Priority date: 2021-09-17
Filing date: 2021-09-17
Publication date: 2023-03-21
Also published as: WO2023040124A1

Abstract

The application provides a communication method and device, a computer readable storage medium and a computer program product, wherein the method comprises the following steps: the first terminal equipment receives a plurality of different TBs through a plurality of PSSCH, and transmits HARQ information corresponding to the plurality of different TBs on PSFCH resources. Wherein the PSFCH resource comprises at least one PRB in a frequency domain. Through the process, the multiplexing of the HARQ information corresponding to the TBs (namely the PSSCHs) by one PSFCH is realized, the requirement of a HARQ information multiplexing scene is met, and the resource utilization rate of the HARQ information is improved.

Description

Communication method and apparatus, computer-readable storage medium, and computer program product

Technical Field

The present application relates to the field of communications technologies, and in particular, to a communication method and apparatus, a computer-readable storage medium, and a computer program product.

Background

In the technology of vehicle to evolution (V2X), terminal devices and terminal devices may communicate with each other through Sidelink (SL).

Under a New Radio (NR) V2X scene, the sidelink channel supports hybrid automatic repeat request (HARQ) feedback. Specifically, the transmitting end transmits data to the receiving end through a physical sidelink shared channel (psch), and the receiving end feeds back HARQ information (for example, the HARQ information may be Acknowledgement (ACK) or Negative Acknowledgement (NACK), where the ACK indicates successful reception and the NACK indicates unsuccessful reception) to the transmitting end through a Physical Sidelink Feedback Channel (PSFCH) so that the transmitting end knows the reception condition of the data.

How to improve the resource utilization rate of the feedback HARQ information is an urgent technical problem to be solved.

Disclosure of Invention

The application provides a communication method and device, a computer readable storage medium and a computer program product, which are used for improving the resource utilization rate of feedback HARQ information.

In a first aspect, the present application provides a communication method, including:

a first terminal device receives a plurality of different TBs through a plurality of PSSCHs;

the first terminal device sends HARQ information corresponding to the multiple different TBs on a PSFCH resource, where the PSFCH resource includes at least one PRB on a frequency domain.

In a possible implementation manner, the sending, by the first terminal device, HARQ information corresponding to the multiple different TBs on a PSFCH resource includes:

and the first terminal equipment sends an encoding result on the PSFCH resource, wherein the encoding result is obtained by encoding the HARQ information corresponding to the TBs.

In a possible implementation manner, the PSFCH resources include time domain resources and frequency domain resources, and before the first terminal device sends HARQ information corresponding to the multiple different TBs on the PSFCH resources, the method further includes:

the first terminal equipment determines the time domain resource of the PSFCH resource according to the time domain indication information;

and the first terminal equipment determines the frequency domain resource of the PSFCH resource according to frequency domain indication information or the time frequency resource occupied by the PSSCH transmitting at least one TB of the TBs.

In a possible implementation manner, the time domain indication information is used to indicate a time interval between the pscch transmitting each TB and the PSFCH transmitting the HARQ information corresponding to the psch;

the determining, by the first terminal device, the time domain resource of the PSFCH resource according to the time domain indication information includes:

and the first terminal equipment determines a time domain resource of the PSFCH resource according to a receiving time of a first PSSCH and a time interval between the first PSFCH corresponding to the first PSSCH and the first PSSCH, wherein the first PSSCH is used for transmitting one or more TBs in the multiple TBs.

In a possible implementation manner, the time domain indication information is used to indicate a period of the PSFCH; the determining, by the first terminal device, the time domain resource of the PSFCH resource according to the time domain indication information includes:

and the first terminal equipment determines the time domain resource of the PSFCH resource according to the period of the PSFCH.

In a possible implementation manner, the time domain indication information is used for indicating a HARQ information feedback period; the determining, by the first terminal device, the time domain resource of the PSFCH resource according to the time domain indication information includes:

the first terminal equipment determines the time domain position of the PSFCH resource according to the HARQ information feedback cycle; the HARQ information feedback period is K times of the period of the PSFCH, and the K is an integer greater than or equal to 1.

In one possible implementation manner, the frequency domain indication information includes: an index of the at least one PRB;

the determining, by the first terminal device, the frequency domain resource of the PSFCH resource according to the frequency domain indication information includes:

and the first terminal equipment determines the frequency domain resource of the PSFCH resource according to the index of the at least one PRB.

In a possible implementation manner, the determining, by the first terminal device, a frequency domain resource of the PSFCH resource according to the time-frequency resource occupied by the PSSCH for transmitting at least one TB of the multiple TBs includes:

the first terminal equipment acquires a PSFCH resource set, wherein the PSFCH resource set comprises a plurality of PRBs;

the first terminal equipment determines n PRBs from the PSFCH resource pool according to a first number n and time-frequency resources occupied by PSSCH transmitting a first TB, wherein n is an integer greater than or equal to 1, a preset mapping relationship is formed between the n PRBs and the time-frequency resources occupied by PSSCH transmitting the first TB, and the first TB is any one of the plurality of TBs;

the first terminal device determines the n PRBs as frequency-domain resources of the PSFCH resources.

In a possible implementation, the first number n is carried in sidelink control information SCI or radio resource control RRC signaling.

In a possible implementation manner, the time domain indication information is carried in SCI or RRC signaling, and/or the frequency domain indication information is carried in SCI or RRC signaling.

In a second aspect, the present application provides a communication device comprising:

a receiving module, configured to receive a plurality of different transport blocks TB through a plurality of physical sidelink shared channels pschs;

a sending module, configured to send hybrid automatic repeat request HARQ information corresponding to the multiple different TBs on a physical sidelink feedback channel PSFCH resource, where the PSFCH resource includes at least one physical resource block PRB in a frequency domain.

In a possible implementation manner, the sending module is specifically configured to:

and sending an encoding result on the PSFCH resource, wherein the encoding result is obtained by encoding the HARQ information corresponding to the TBs.

In a possible implementation manner, the PSFCH resources include time domain resources and frequency domain resources, and the communication apparatus further includes a determining module, configured to:

determining the time domain resource of the PSFCH resource according to the time domain indication information;

and determining the frequency domain resource of the PSFCH resource according to the frequency domain indication information or the time frequency resource occupied by the PSSCH transmitting at least one TB of the TBs.

In a possible implementation manner, the time domain indication information is used to indicate a time interval between the pscch for transmitting each TB and the PSFCH for transmitting the HARQ information corresponding to the TB; the determining module is specifically configured to:

determining a time domain resource of a PSFCH resource according to a receiving time of a first PSSCH and a time interval between the first PSSCH and a PSFCH corresponding to the first PSSCH, wherein the first PSSCH is used for transmitting one or more TBs in the plurality of TBs.

In a possible implementation manner, the time domain indication information is used to indicate a period of the PSFCH; the determining module is specifically configured to:

and determining the time domain resource of the PSFCH resource according to the period of the PSFCH.

In a possible implementation manner, the time domain indication information is used for indicating a HARQ information feedback period; the determining module is specifically configured to:

determining the time domain position of the PSFCH resource according to the HARQ information feedback period; the HARQ information feedback period is K times of the period of the PSFCH, and K is an integer greater than or equal to 1.

In one possible implementation manner, the frequency domain indication information includes: an index of the at least one PRB; the determining module is specifically configured to:

and determining the frequency domain resource of the PSFCH resource according to the index of the at least one PRB.

In a possible implementation manner, the determining module is specifically configured to:

acquiring a PSFCH resource set, wherein the PSFCH resource set comprises a plurality of PRBs;

determining n PRBs from a PSFCH resource pool according to a first number n and time-frequency resources occupied by PSSCH transmitting a first TB, wherein n is an integer greater than or equal to 1, a preset mapping relationship is formed between the n PRBs and the time-frequency resources occupied by PSSCH transmitting the first TB, and the first TB is any one of the multiple TBs;

and determining the frequency domain position of the target resource according to the frequency domain positions corresponding to the n PRBs.

In a possible implementation manner, the first number n is carried in sidelink control information SCI or radio resource control RRC signaling.

In a third aspect, the present application provides a communication apparatus, comprising: a processor, and a memory communicatively coupled to the processor;

the memory stores computer-executable instructions;

the processor executes computer-executable instructions stored by the memory to implement a method as provided by any one of the possible implementations of the first aspect.

In a fourth aspect, the present application provides a computer-readable storage medium having a computer program stored therein, where the computer program causes a method provided in any one of the possible implementations of the first aspect to be performed when the computer program is executed by a computer.

In a fifth aspect, the present application provides a computer program product comprising a computer program that, when executed by a computer, causes the method provided by any one of the possible implementations of the first aspect to be performed.

According to the communication method and device, the computer-readable storage medium and the computer program product, the first terminal device can send the HARQ information corresponding to the multiple different TBs on one PSFCH, so that the HARQ information corresponding to the multiple TBs is multiplexed into one PSFCH, the requirement of a HARQ information multiplexing scene is met, and the resource utilization rate of the feedback HARQ information is improved.

Drawings

Fig. 1 is a schematic view of an application scenario provided in an embodiment of the present application;

fig. 2 is a schematic view of another application scenario provided in the embodiment of the present application;

fig. 3 is a schematic diagram of another application scenario provided in the embodiment of the present application;

fig. 4 is a schematic diagram of a resource mapping relationship between a sub-channel of a psch and a PSFCH according to an embodiment of the present disclosure;

fig. 5A is a schematic diagram illustrating a method for determining PSFCH candidate PRBs according to an embodiment of the present disclosure;

fig. 5B is a schematic diagram illustrating another method for determining PSFCH candidate PRBs according to the embodiment of the present application;

fig. 6A is a flowchart illustrating a communication method according to an embodiment of the present application;

fig. 6B is an interaction flow diagram of a communication method according to an embodiment of the present application;

fig. 7 is a schematic diagram of determining time domain resources of a PSFCH resource according to an embodiment of the present application;

fig. 8 is a schematic diagram of determining frequency domain resources of PSFCH resources according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of another communication device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "first," "second," "third," "fourth," and the like (if any) in this application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. The execution sequence of each step in the method provided by the present application is only an example, and other sequences may be available in practical implementation, and the present application is not limited. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Before introducing the technical solution provided by the embodiment of the present application, an application scenario in which the embodiment of the present application may be applied is first described.

Fig. 1 is a schematic view of an application scenario provided in an embodiment of the present application. The communication system shown in fig. 1 includes a network device 101 and two terminal devices (terminal device 102 and terminal device 103, respectively), where both terminal device 102 and terminal device 103 are in the coverage area of network device 101. Network device 101 may communicate with terminal device 102, terminal device 103, respectively. Terminal device 102 may communicate with terminal device 103. Illustratively, the terminal device 102 may send a message to the terminal device 103 through the network device 101, and the terminal device 102 may also send a message directly to the terminal device 103. A link for direct communication between the terminal device 102 and the terminal device 103 is referred to as a side link, and may also be referred to as a device-to-device (D2D) link, a side link, and the like. The transmission resources on the sidelink may be allocated by the network device.

Exemplarily, fig. 2 is a schematic view of another application scenario provided in the embodiment of the present application. The communication system shown in fig. 2 likewise comprises a network device 101 and two terminal devices, with the difference from fig. 1 that terminal device 103 is within the coverage area of network device 101 and terminal device 104 is outside the coverage area of network device 101. Network device 101 may communicate with terminal device 103 and terminal device 103 may communicate with terminal device 104. Illustratively, the terminal device 103 may receive the configuration information sent by the network device 101, and perform sidestream communication according to the configuration information. Since the terminal device 104 cannot receive the configuration information sent by the network device 101, the terminal device 104 may perform the sidestream communication according to the pre-configuration information and information carried in a sidelink broadcast channel (PSBCH) sent by the terminal device 103.

Exemplarily, fig. 3 is a schematic diagram of another application scenario provided in the embodiment of the present application. Terminal device 104 and terminal device 105 shown in fig. 3 are both outside the coverage area of network device 101. The terminal device 104 and the terminal device 105 may both determine the sidestream configuration according to the pre-configuration information, and perform sidestream communication.

The terminal device related to the embodiment of the present application may also be referred to as a terminal, and may be a device with a wireless transceiving function, which may be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on the water surface (such as a ship and the like); and may also be deployed in the air (e.g., airplanes, balloons, satellites, etc.). The terminal device may be a User Equipment (UE), wherein the UE includes a handheld device, an in-vehicle device, a wearable device, or a computing device having wireless communication functionality. Illustratively, the UE may be a mobile phone (mobile phone), a tablet computer, or a computer with wireless transceiving function. The terminal device may also be a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in unmanned driving, a wireless terminal in telemedicine, a wireless terminal in smart grid, a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), and so on. In the embodiment of the present application, all devices for implementing the functions of the terminal device may be regarded as terminal devices; the terminal device may also be an apparatus, such as a system-on-chip, capable of supporting the terminal device to implement the function, and the apparatus may be installed in the terminal device. In the embodiment of the present application, the chip system may be formed by a chip, and may also include a chip and other discrete devices.

The network device related to the embodiment of the present application includes a Base Station (BS), which may be a device deployed in a radio access network and capable of performing wireless communication with a terminal device. The base station may have various forms, such as a macro base station, a micro base station, a relay station, an access point, and the like. For example, the base station related to the embodiment of the present application may be a base station in fifth generation mobile communications (5G) or a base station in LTE, where the base station in 5G may also be referred to as a Transmission Reception Point (TRP) or a gNB. In the embodiment of the present application, all apparatuses for implementing the functions of a network device may be regarded as network devices; it may also be a device, such as a chip system, capable of supporting the network device to implement the function, and the device may be installed in the network device.

It should be noted that the system architecture and the application scenario described in the embodiment of the present application are for more clearly illustrating the technical solution of the embodiment of the present application, and do not constitute a limitation to the technical solution provided in the embodiment of the present application, and it is known by a person skilled in the art that the technical solution provided in the embodiment of the present application is also applicable to similar problems along with the evolution of the network architecture and the appearance of a new service scenario.

NR-V2X is a communication scenario for communicating over a sidelink, where X may refer broadly to any device with wireless receiving and transmitting capabilities, including but not limited to slow moving wireless devices, fast moving onboard devices, roadside infrastructure, network control nodes with wireless transmitting and receiving capabilities, etc. The technical scheme provided by the application can be applied to an NR-V2X communication scene and can also be applied to other scenes for communication based on the sidelink. The NR-V2X communication supports unicast, multicast and broadcast transmission modes. For unicast transmission, the transmitting terminal sends data and the receiving terminal has only one. For multicast transmission, a transmitting terminal transmits data, and a receiving terminal is all terminals in a communication group or all terminals within a certain transmission distance. For broadcast transmission, a transmitting terminal transmits data, and a receiving terminal is any terminal around the transmitting terminal.

There is a configuration of Resource Pool (RP) in NR-V2X, which defines the time-frequency resource range of sideline communication. The minimum time domain granularity configured in the resource pool is one slot (slot), and the resource pool can contain discontinuous slots in time; the minimum frequency domain granularity is one subchannel (subchannel) including a plurality of Physical Resource Blocks (PRBs) consecutive in the frequency domain, and in NR-V2X, one subchannel may include 10, 12, 15, 20, 25, 50, 75, or 100 PRBs.

In NR-V2X communication, 2-order Sidelink Control Information (SCI) is introduced. The first-order SCI (or called as first sidelink control information) is carried in a Physical Sidelink Control Channel (PSCCH) and is used for indicating information such as transmission resources, reserved resource information, modulation and Coding Scheme (MCS) level, priority and the like of the PSCCH. The second-order SCI (or referred to as second sidelink control information) is carried in the psch and is used for indicating information used for data demodulation, such as a source ID, a destination ID, a hybrid automatic repeat request HARQ ID, a New Data Indicator (NDI), and the like.

In the current protocol, the second-level SCI includes two formats (formats), SCI format 2-A and SCI format 2-B. The content in SCI format 2-A is shown in Table 1, and the content in SCI format 2-B is shown in Table 2.

TABLE 1

Wherein, the source identification code field is used for indicating the source identification code, the target identification code field is used for indicating the target identification code, and the transmission type indication comprises: unicast (unicast), multicast (groupcast), and Broadcast (Broadcast).

TABLE 2

The area identification code field is used for indicating the area identification code.

The terminal equipment decodes the first-order SCI from the PSCCH, and determines the format of the second-order SCI according to the information in the second-order SCI format (2 nd-stage SCI format) field in the first-order SCI. And then decoding the second-order SCI carried in the PSSCH according to the format of the second-order SCI.

The contents of the second-stage SCI format (2 nd-stage SCI format) field in the first-stage SCI are shown in Table 3.

TABLE 3

In order to improve the reliability of communication, PSFCH is introduced in NR-V2X. The sending terminal sends side-row data to the receiving terminal, wherein the side-row data comprises PSCCH and PSSCH, the receiving terminal sends hybrid automatic repeat request (HARQ) information to the sending terminal, and the sending terminal judges whether data retransmission is needed according to the HARQ information fed back by the receiving terminal. Wherein the HARQ information is carried in the PSFCH. For example, the HARQ information may be ACK, which indicates successful reception, or NACK, which indicates unsuccessful reception.

The PSFCH occurs periodically in the time domain. The cycle size of the PSFCH is configured by Radio Resource Control (RRC) parameters. Illustratively, the period of the PSFCH may be 1, 2, 4, etc., in slots (slots).

The resource pool configuration information of the sidelink includes: transmission resources of PSCCH/PSCCH, and transmission resources of PSFCH. The transmitting terminal transmits the PSCCH/PSCCH in a pool of transmission resources configured for it. The receiving terminal detects whether PSCCH/PSSCH transmitted by other terminals exists in a receiving resource pool configured for the receiving terminal, and if so, the receiving terminal determines transmission resources for transmitting PSFCH according to the transmission resources of the PSCCH/PSSCH and the configuration information of the PSFCH in the receiving resource pool. After the transmitting terminal transmits the PSCCH/PSSCH, the transmitting terminal determines the resource for receiving the PSFCH according to the PSFCH configuration information in the transmitting resource pool and detects the PSFCH. In order to enable the transmitting terminal and the receiving terminal to perform data transmission normally, the transmitting resource pool configured for the transmitting terminal is generally the same as the receiving resource pool configured for the receiving terminal, so that the transmitting terminal and the receiving terminal can determine the same PSFCH transmission resource according to the PSSCH transmission resource and the configuration information of the PSFCH in the respective resource pools.

In the current protocol, the receiving terminal determines the transmission resource for transmitting the PSFCH as follows:

(1) Obtaining available PRB set (PRB set) of PSFCH in resource pool

Illustratively, configuration information (sl-PSFCH-RB-Set) sent by the network device may be received, the configuration information indicating which PRBs on resource Chi Zhongpin domain are available for PSFCH transmission.

(2) A PSFCH available PRB subset (PRB subset) associated with each subchannel on each slot in one PSFCH period is obtained.

Illustratively, the PSFCH available PRB subset associated with each subchannel on each slot is as follows:

wherein, in the above formula (2),

represents the total number of available PRBs for the PSFCH indicated by sl-PSFCH-RB-Set,

indicating the number of slots, N, of the PSSCH with which the PSFCH is associated _subch Represents the number of subchannels per time-slot;

representing the total number of subsets into which the PSFCH available PRBs can be partitioned. Calculated by the above formula (2)

Indicating the number of PRBs included in each PRB subset (i.e., the number of PSFCH available PRBs associated with each subchannel over each slot).

Equation (1) above represents the available PRB subset associated with the jth subchannel in the ith slot in a PSFCH period.

0≤j＜N _subch 。

Fig. 4 is a schematic diagram of a resource mapping relationship between a sub-channel of a psch and a PSFCH according to an embodiment of the present application. As shown in fig. 4, the period of the PSFCH is assumed to be 2 slots. There are PRB resources available for the PSFCH in slot n +1 and slot n + 3. There is a mapping relationship between each subchannel in slot n and the PSFCH available PRB resources in slot n + 1. For example, fig. 4 illustrates that the subchannel s in the slot n is mapped to the k-th to k + 1-th PRBs in the PSFCH available PRB set in the slot n +1 (that is, the k-th to k + 1-th PRBs are the PSFCH available PRBs associated with the subchannel s of the slot n). There is a mapping relationship between each sub-channel in the time slot n +1 and the PSFCH available PRB resources in the time slot n +1, there is a mapping relationship between each sub-channel in the time slot n +2 and the PSFCH available PRB resources in the time slot n +3, and there is a mapping relationship between each sub-channel in the time slot n +3 and the PSFCH available PRB resources in the time slot n +3, which is not illustrated here.

(3) And determining the total number of the candidate PRBs and cyclic shift pairs (cyclic shift pairs) for transmitting the PSFCH according to the time-frequency resources occupied by the received PSSCH.

Exemplary embodiments of the inventionThe following formula (3.1) may be used to determine the total number of cyclic shift pairs (cyclic shift pairs) and the candidate PRBs for transmitting the PSFCH

In the above-mentioned formula (3.1),

a value of 1 or

Is the total number of subchannels occupied by one psch.

When in use

When the value is 1, the PSFCH available PRB subset related to one subchannel occupied by the PSSCH is taken as a candidate PRB. Fig. 5A is a schematic diagram of a manner for determining PSFCH candidate PRBs according to an embodiment of the present application, and as shown in fig. 5A, it is assumed that the pschs received by the terminal device occupy 4 subchannels, which are subchannel 1 to subchannel 4 respectively, and a subset of the available PRBs of the PSFCH associated with subchannel 1 may be used as the candidate PRBs. The PSFCH available PRB subset associated with subchannel 1 can be obtained through the above equation (1).

When in use

Take a value of

In time, it is described that the PSFCH available PRB subset associated with all subchannels occupied by the PSSCH is all used as candidate PRBs. FIG. 5B is a diagram of another method for determining PSFCH candidate PRBs according to an embodiment of the present applicationAs shown in fig. 5B, assuming that the pschs received by the terminal device occupy 4 subchannels, which are subchannel 1 to subchannel 4, respectively, the subset of PSFCH available PRBs associated with subchannel 1, the subset of PSFCH available PRBs associated with subchannel 2, the subset of PSFCH available PRBs associated with subchannel 3, and the subset of PSFCH available PRBs associated with subchannel 4 may all be used as candidate PRBs. Wherein, the PSFCH available PRB subset associated with each subchannel can be obtained by the above formula (1).

In the above-mentioned formula (3.1),

representing the total number of supported cyclic shift pairs.

The values of (d) can be found in table 4.

TABLE 4

(4) And determining a target PRB finally used for carrying the HARQ information and a cyclic shift pair index from the candidate PRBs.

For example, the target PRB and the cyclic shift pair index may be determined using the following equation (4):

wherein, P _ID An identifier indicating a transmitting terminal, and M is set when the sidestream communication is a multicast type 1 _ID An identification of a group representing a group in which the transmitting terminal and the receiving terminal are located. When the sidelink communication is unicast and multicast type 2, M _ID And =0. The multicast type 1 means that the receiving terminal only supports NACK feedback, and the multicast type 2 means that NACK and ACK can be fed back by the receiving terminal. The identifier and the group identifier of the terminal device may be allocated when the terminal device establishes a connection with the network device, or may be allocated when a sideline connection is established between the terminal device and the terminal device. Through toThe formula (4) can uniquely determine the index of one PSFCH available PRB, which is the target PRB. The index of the cyclic shift pair can also be determined by the above equation (4). According to the determined index of the cyclic shift pair and table 1, a parameter m for generating a sequence carrying HACQ information can be determined ₀ 。

(5) And determining sequence parameters mcs for carrying HRAQ information.

And the terminal equipment determines the sequence parameter mcs for bearing the HRAQ information according to the decoding condition of the PSSCH. For example, as shown in table 5, in a unicast and multicast type 2 scenario, if the psch is successfully decoded, ACK should be fed back, ACK information is carried by a sequence, and at this time, a parameter mcs of the generated sequence takes a value of 6; if the PSSCH decoding fails, NACK should be fed back, NACK information is carried by the sequence, and at the moment, the value of a parameter mcs of the generated sequence is 0. For another example, as shown in table 6, in a multicast type 1 scenario, if decoding of the psch fails, NACK should be fed back, NACK information is carried by a sequence, a parameter mcs of the generated sequence takes a value of 0 at this time, and if decoding of the psch succeeds, HARQ information is not fed back.

TABLE 5

HARQ information (HARQ-ACK Value)	0(NACK)	1(ACK)
			Sequence cyclic shift (Sequence cyclic shift)	0	6

TABLE 6

HARQ information (HARQ-ACK Value)	0(NACK)	1(ACK)
			Sequence cyclic shift (Sequence cyclic shift)	0	N/A

Further, a sequence carrying the HARQ information is generated by using the determined sequence parameters m0 and mcs and is transmitted in the target PRB.

As can be seen from the above steps (1) to (5), in the current determining manner of the PSFCH resource, for one PSSCH, a unique PSFCH available PRB can be determined, a sequence parameter carrying HARQ information is determined, and finally 1bit HARQ information is carried in the determined target PRB. Therefore, one PSFCH can only feed back the HARQ information corresponding to one PSSCH, and the method cannot be applied to a scene of multiplexing the HARQ information of a plurality of PSSCHs. In the embodiment of the present application, the multiplexing of the HARQ information of multiple pschs means that the HARQ information of multiple pschs is carried on the same PSFCH.

In order to solve the above technical problem, in the embodiment of the present application, a PSFCH resource determination manner is redesigned, so that one or multiple PRBs can be determined when determining a PSFCH resource, and HARQ information of multiple PSSCHs can be sent on the same PSFCH, thereby meeting the requirement of multiplexing HARQ information of multiple PSSCHs.

The technical solution of the present application will be described in detail below with specific examples. These several specific embodiments may be combined with each other below, and details of the same or similar concepts or processes may not be repeated in some embodiments.

Fig. 6A is a flowchart illustrating a communication method according to an embodiment of the present application. As shown in fig. 6A, the method of the present embodiment includes:

s601: the first terminal device receives a plurality of different TBs over a plurality of pschs.

Wherein each TB corresponds to a psch. And the data carried in each TB is sideline data which is sent to the first terminal equipment by the second terminal equipment.

Optionally, the multiple TBs are received within one PSFCH period.

For example, suppose a PSFCH cycle is 4 slots, and slot 1, slot 2, slot 3, and slot 4 are a PSFCH cycle. Then the first terminal device may receive TB1 via the psch of slot 1, TB2 via the psch of slot 2, TB3 via the psch of slot 3, and TB4 via the psch of slot 4. Of course, the first terminal device may also receive the TB in some of the 4 slots, for example, receive TB1 through the psch of slot 1, receive TB2 through the psch of slot 3, and have no TBs to be received in slot 2 and slot 4.

In this embodiment of the present application, the multiple TBs may be from the same second terminal device, or may be from multiple different second terminal devices. This embodiment is not limited to this.

S602: the first terminal equipment transmits HARQ information corresponding to a plurality of different TBs on a PSFCH resource, wherein the PSFCH resource comprises at least one PRB on a frequency domain.

The embodiment of the present application is different from the above-mentioned existing determining manner of the PSFCH resource, and the PSFCH resource in the embodiment of the present application includes one or more PRBs in a frequency domain instead of determining a unique PRB. Because the PSFCH resource may include a plurality of PRBs, the PSFCH resource can carry more HARQ information, and thus the requirement for multiplexing the HARQ information of a plurality of PSSCHs can be met.

In a possible implementation manner, the first terminal device sends an encoding result on the PSFCH resource, where the encoding result is obtained by encoding HARQ information corresponding to multiple TBs.

Another difference between the embodiment of the present application and the foregoing prior art is that the embodiment of the present application does not take the form of a cyclic shift sequence when carrying HARQ information in PSFCH resources. Because, the cyclic shift sequence is adopted, only 1bit of information can be carried in one PSFCH PRB. In the embodiment of the application, HARQ information corresponding to a plurality of TBs is coded, and the coding result is carried on PSFCH resources to be sent. Therefore, the limitation that only 1bit information can be carried in one PSFCH PRB is cancelled, so that more information can be carried on the PSFCH resource.

Fig. 6B is an interaction flow diagram of a communication method according to an embodiment of the present disclosure. As shown in fig. 6B, the method of the present embodiment includes:

s611: the second terminal device transmits a plurality of different TBs to the first terminal device over the plurality of pschs.

Accordingly, the first terminal device receives a plurality of different TBs through a plurality of pschs.

S612: the first terminal equipment determines the time domain resource of the PSFCH resource according to the time domain indication information, and determines the frequency domain resource of the PSFCH resource according to the frequency domain indication information or the time frequency resource occupied by the PSSCH transmitting at least one TB of the TBs; the PSFCH resource includes at least one PRB in the frequency domain.

S613: and the first terminal equipment sends HARQ information corresponding to a plurality of different TBs to the second terminal equipment on the PSFCH resource.

It should be understood that the implementation manner of S611 and S613 in this embodiment is similar to that in the embodiment shown in fig. 6A, and repeated descriptions are omitted. The following describes the determination manners of the time domain resource and the frequency domain resource of the PSFCH resource in S612, respectively.

In this embodiment of the application, when determining the time domain resource of the PSFCH resource, the first terminal device may adopt several possible schemes as follows.

Time domain resource determination scheme 1:

the time domain indication information is used to indicate a time interval between the pscch transmitting each TB and the PSFCH transmitting its corresponding HARQ information. The time interval indicated by the corresponding time domain indication information may be different for different TBs.

The time interval may be a start time interval or an end time interval, which is not limited in the embodiment of the present application.

And the first terminal equipment determines the time domain resource of the PSFCH resource according to the receiving time of the first PSSCH and the time interval between the first PSFCH corresponding to the first PSSCH and the first PSFCH. Wherein the first PSSCH is used to transmit one or more TBs of the plurality of TBs.

For example, taking a psch for transmitting a TB as an example, for each TB, according to a time interval indicated by the time domain indication information corresponding to the TB and a time domain resource of a pscch resource for transmitting the TB, a time domain resource of a PSFCH resource for transmitting HARQ information corresponding to the TB may be determined.

It should be understood that, when HARQ information of multiple TBs needs to be fed back at the same PSFCH, the determined time domain resources of the PSFCH resources for transmitting HARQ information corresponding to each TB are the same.

Optionally, the time domain indication information may be carried in the SCI. Illustratively, the first terminal device also receives a SCI corresponding to each TB from the second terminal device. Time domain indication information (e.g., psch-to-HARQ feedback) is included in the SCI to indicate a time interval between a pscch transmitting the TB and a PSFCH transmitting its corresponding HARQ information. Thus, the first terminal device can determine the time domain resource of the PSFCH resource for transmitting the HARQ information corresponding to the TB according to the time domain resource of the PSSCH resource for transmitting the TB and the time interval carried in the SCI corresponding to the TB.

Optionally, the time domain indication information is carried in the second-order SCI. Illustratively, a new format for the second-order SCI may be used, e.g., SCI format 2-C. At this time, the value of the 2nd-stage SCI format field in the first-order SCI may be set to 10 or 11 to indicate SCI format 2-C.

Optionally, the second-stage SCI may further include a Sideline Assignment Index (SAI) for indicating a position of HARQ information corresponding to the TB in a codebook (codebook).

In this scheme, the second terminal device dynamically indicates, in the SCI, a time interval between the psch used for transmitting each TB and the PSFCH used for transmitting the HARQ information corresponding thereto, so that the first terminal device can determine, according to the time interval indicated in the SCI, which time domain resource the HARQ information of the TB needs to be fed back on.

For example, fig. 7 is a schematic diagram of determining time domain resources of a PSFCH resource according to an embodiment of the present application. As shown in fig. 7, it is assumed that the first terminal device receives 3 TBs, TB1 transmitted in slot 1, TB2 transmitted in slot 2, and TB3 transmitted in slot 3, respectively. Assume that the time interval (psch-to-HARQ _ feedback) carried in the SCI corresponding to TB1 transmitted in slot 1 is 3 slots, the time interval (psch-to-HARQ _ feedback) carried in the SCI corresponding to TB2 transmitted in slot 2 is 2 slots, and the time interval (psch-to-HARQ _ feedback) carried in the SCI corresponding to TB3 transmitted in slot 3 is 1 slot. Thus, the first terminal device receives the 3 TBs, and can determine that HARQ information of the

TBs

1, 2, and 3 needs to be fed back in the slot 4.

Time domain resource determination scheme 2:

the time domain indication information is used to indicate the period of the PSFCH. The period of an exemplary PSFCH may be 1, 2, 4 slots, etc.

Optionally, the time domain indication information may be carried in RRC signaling.

In this scheme, the first terminal device may determine the time domain resource of the PSFCH resource according to the period of the PSFCH. For example, suppose the period of the PSFCH is 4 slots, i.e., the PSFCH resources exist in slot 4 and slot 8. After receiving the TB in timeslot 1, timeslot 2, timeslot 3, and timeslot 4, the first terminal device may determine that the time domain resource of the PSFCH resource is timeslot 4. After receiving the TB in time slot 5, time slot 6, time slot 7, and time slot 8, the first terminal device may determine that the time domain resource of the PSFCH resource is time slot 8.

Time domain resource determination scheme 3:

the time domain indication information is used for indicating the HARQ information feedback period. The feedback period of the HRAQ information is K times of the period of the PSFCH, and K is an integer greater than or equal to 1.

For example, assuming that K =2, if the period of the PSFCH is 2 slots, the feedback period of the HARQ information is 4 slots. For example, PSFCH resources exist in slot 2, slot 4, slot 6, and slot 8. However, this scheme is adopted, and HARQ information feedback is performed only in slot 4 and slot 8. That is, assuming that the first terminal device receives the TB in slot 1, slot 2, slot 3, and slot 4, it determines that the time domain resource of the PSFCH resource is slot 4. Assuming that the first terminal device receives the TB in slot 5, slot 6, slot 7, and slot 8, it determines that the time domain resource of the PSFCH resource is slot 8.

In this embodiment, the first terminal device may adopt several possible schemes as follows when determining the frequency domain resource of the PSFCH resource.

Frequency domain resource determination scheme 1:

the first terminal equipment determines the frequency domain resource of the PSFCH resource according to the time frequency resource occupied by the PSSCH transmitting at least one TB of the TBs.

Optionally, the first terminal device determines the frequency domain resource of the PSFCH resource according to the time-frequency resource occupied by the PSSCH for transmitting the first TB. The first TB is any one of a plurality of TBs.

Illustratively, a first terminal device obtains a PSFCH resource set comprising a plurality of PRBs. The set of PSFCH resources may be pre-configured by the network device to the first terminal device. The first terminal equipment determines n PRBs from a PSFCH resource pool according to the first number n and the time-frequency resources occupied by PSSCH transmitting the first TB, wherein n is an integer greater than or equal to 1, and a preset mapping relationship exists between the n PRBs and the time-frequency resources occupied by PSSCH transmitting the first TB. The first terminal device determines the n PRBs as frequency domain resources of the PSFCH resources.

The preset mapping relationship may refer to an association relationship between each sub-channel of each timeslot of the psch and the PSFCH available PRBs, and the association relationship may be as shown in fig. 4. The association relationship may be configured in advance by the network device, or agreed in advance by the first terminal device and the second terminal device.

Optionally, the first TB is a first TB of a plurality of TBs. Fig. 8 is a schematic diagram of determining frequency domain resources of a PSFCH resource according to an embodiment of the present application. As shown in fig. 8, assuming that the first terminal device receives TB1, TB2, TB3, and TB4 in sequence, the PSFCH resource associated with TB1 may be determined according to the time-frequency resource occupied by the PSSCH for transmitting TB1 (i.e., the first received TB), and the frequency domain resource of the PSFCH resource finally used for feeding back the HARQ information of the 4 TBs is determined from the PSFCH resource associated with TB 1.

How to determine the frequency domain resource of the PSFCH resource according to the time frequency resource occupied by the first TB is described in detail below.

(1) A PRB set (PRB set) available to the PSFCH is acquired in a resource pool.

Wherein, the steps (1) and (2) are the same as the steps (1) and (2) in the related art, and are not described herein again.

(3) And determining a candidate PRB for transmitting the PSFCH according to the time-frequency resource occupied by the PSSCH transmitting the first TB.

Specifically, substituting the pscch for transmitting the first TB into the above equation (1) for each sub-channel of the timeslot occupied by the pscch for transmitting the first TB can determine the PSFCH available PRB associated with each sub-channel of the timeslot occupied by the pscch for transmitting the first TB.

Further, the following formula (5) may be adopted to determine candidate PRBs for transmitting the PSFCH from the PSFCH available PRBs associated with each subchannel of the timeslot occupied by the PSSCH for transmitting the first TB:

in the above-mentioned formula (5),

a value of 1 or

The total number of subchannels occupied by the psch for transmission of the first TB. n is a first number in this embodiment, that is, the number of PRBs required for this time of transmitting PSFCH, and n is an integer greater than 0.

Is a candidate PRB for transmitting the PSFCH.

Optionally, the first number n may be carried in SCI or RRC signaling.

The value of the first number n may be determined by the number of bits of the HARQ information to be fed back and the modulation order.

Alternatively, the first number n may be obtained according to a preset field in the SCI. For example, the first number n may be derived from the SAI field in the second-order SCI. Therefore, according to actual requirements, the number of PSFCH PRBs occupied by the HARQ information to be fed back can be determined in real time, the PSFCH resources can be determined as required, and waste of the PSFCH resources can not be caused.

When in use

When the value is 1, the PSFCH available PRB subset related to one subchannel occupied by the PSSCH is taken as a candidate PRB. Fig. 5A is a schematic diagram of a method for determining PSFCH candidate PRBs according to an embodiment of the present application, and as shown in fig. 5A, it is assumed that the pscch for transmitting the first TB received by the first terminal device occupies 4 subchannels, which are subchannel 1 to subchannel 4, and a subset of PSFCH available PRBs associated with subchannel 1 may be used as a candidate PRB. The PSFCH available PRB subset associated with subchannel 1 can be obtained by the above equation (1).

When in use

Take a value of

Now, all PSSCH occupied are describedThe subset of PSFCH available PRBs associated with the subchannel are all candidate PRBs. Fig. 5B is a schematic diagram of another method for determining PSFCH candidate PRBs provided in this embodiment, as shown in fig. 5B, it is assumed that the pschs transmitted by the first TBs received by the first terminal device occupy 4 subchannels, which are respectively subchannel 1 to subchannel 4, and a subset of PSFCH available PRBs associated with subchannel 1, a subset of PSFCH available PRBs associated with subchannel 2, a subset of PSFCH available PRBs associated with subchannel 3, and a subset of PSFCH available PRBs associated with subchannel 4 may all be used as candidate PRBs. Wherein, the PSFCH available PRB subset associated with each subchannel can be obtained by the above equation (1).

(4) And determining a target PRB finally used for carrying the HARQ information from the candidate PRBs.

For example, the target PRB may be determined using the following equation (6):

wherein, P _ID Indicating the identity of the sending terminal (i.e. the second terminal device), M when the sidestream communication is multicast type 1 _ID An identification of a group representing the group in which the sending terminal (i.e. the second terminal device) and the receiving terminal (i.e. the first terminal device) are located. When the sidelink communication is unicast and multicast type 2, M _ID And =0. The multicast type 1 means that the receiving terminal only supports NACK feedback, and the multicast type 2 means that NACK and ACK can be fed back by the receiving terminal. The identifier of the terminal device and the identifier of the group may be allocated when the terminal device establishes a connection with the network device, or may be allocated when a sideline connection is established between the terminal device and the terminal device. The indexes of n PRBs, which are target PRBs, can be determined through the above formula (6).

For ease of understanding, the following is exemplified.

Suppose that in the above equation (5)

Taking the value as 1, the PSFCH available PRBs associated with each subchannel determined according to the above formulas (1) and (2) include 50 PRBs, that is, 50 PRBs

If n =2, the meaning of the above formula (5) is: two consecutive PRBs are divided into 1 group, so that 50 PRBs are divided into 25 groups,

thus, the above 50 PRBs are converted into 25 group indexes, and each group has two PRBs. According to the formula (6), a group index can be determined from the 25 group indexes, and the PRB in the group corresponding to the group index is the target PRB. Thus, the number of the finally determined target PRBs is 2.

This scheme differs from the above-described existing way of determining PSFCH resources in that the first number n is introduced in step (3). Since the above existing determining method for the PSFCH resource can only determine a single PRB and may not be sufficient for feeding back HARQ information of multiple TBs, the scheme may determine n PRBs by introducing the first number n, so that the method can be used for feeding back HARQ information of multiple TBs.

Frequency domain resource determination scheme 2:

the frequency domain indication information comprises an index of at least one PRB; the first terminal device may determine the frequency domain resource of the PSFCH resource according to the index of the at least one PRB.

Optionally, the frequency domain indication information may be carried in SCI or in RRC signaling.

Optionally, the frequency domain indication information may be carried in the second-order SCI. A resource set indication (resource set indication) information field of the PSFCH is included in the second-order SCI, which includes an index of one or more PRBs. The index of the specifically included PRB may be configured by the RRC parameter.

Illustratively, a new format for the second-order SCI may be used, e.g., SCI format 2-C. At this time, the value of the 2nd-stage SCI format field in the first-order SCI may be set to 10 or 11 to indicate SCI format 2-C.

In this embodiment, considering forward compatibility, for the above frequency domain resource determination scheme 1, the PRBs available for the PSFCH in the resource pool in step (1) may be different from the frequency domain resources of the PSFCH in protocol version R16. The PSFCH resources indicated in the 2,2nd-stage SCI for the above-described frequency domain resource determination scheme may be different from the frequency domain resources of the PSFCH in protocol version R16.

In the embodiment of the present application, when determining the PSFCH resource, the time domain resource determining scheme 1, the time domain resource determining scheme 2, the time domain resource determining scheme 3, the frequency domain resource determining scheme 1, and the frequency domain resource determining scheme 2 may be used in combination. The following is illustrative of several implementations.

In a first implementation manner, when determining the time domain resources of the PSFCH resources, the time domain resource determination scheme 1 is adopted, and when determining the frequency domain resources of the PSFCH resources, the frequency domain resource determination scheme 1 is adopted.

In a second implementation manner, when determining the time domain resource of the PSFCH resource, the time domain resource determining scheme 1 is adopted, and when determining the frequency domain resource of the PSFCH resource, the frequency domain resource determining scheme 2 is adopted.

In a third implementation manner, when determining the time domain resource of the PSFCH resource, the time domain resource determination scheme 2 is adopted, and when determining the frequency domain resource of the PSFCH resource, the frequency domain resource determination scheme 1 is adopted.

In a fourth implementation manner, when determining the time domain resources of the PSFCH resources, the time domain resource determination scheme 2 is adopted, and when determining the frequency domain resources of the PSFCH resources, the frequency domain resource determination scheme 2 is adopted.

In a fifth implementation manner, when determining the time domain resource of the PSFCH resource, the time domain resource determining scheme 3 is adopted, and when determining the frequency domain resource of the PSFCH resource, the frequency domain resource determining scheme 1 is adopted.

In a sixth implementation manner, when determining the time domain resources of the PSFCH resources, the time domain resource determination scheme 3 is adopted, and when determining the frequency domain resources of the PSFCH resources, the frequency domain resource determination scheme 2 is adopted.

In the above six implementation manners, each time domain resource determining scheme and each frequency domain resource determining scheme may participate in the detailed description of the foregoing embodiments, which is not described herein again.

The embodiment of the application realizes that the HARQ information corresponding to a plurality of TBs (PSSCH) multiplexes one PSFCH, meets the requirement of a HARQ information multiplexing scene, and improves the resource utilization rate of the feedback HARQ information.

Fig. 9 is a schematic structural diagram of a communication device according to an embodiment of the present application. The communication means provided in this embodiment may be in the form of software and/or hardware. The communication device provided in this embodiment may be a terminal device, or a module, a unit, a chip module, and the like in the terminal device.

As shown in fig. 9, the communication apparatus 900 provided in this embodiment includes: a receiving module 901 and a sending module 903. Wherein,

a receiving module 901, configured to execute the receiving step executed by the first terminal device in the foregoing method embodiment. For example, the receiving module 901 may execute S601 or S611 in the above embodiments.

A sending module 903, configured to execute the receiving step executed by the first terminal device in the foregoing method embodiment. For example, the sending module 903 may execute S602 or S613 in the above embodiment.

In a possible implementation manner, as shown in fig. 9, the communication apparatus 900 may further include a determining module 902, configured to perform the step of determining the PSFCH resource, performed by the first terminal device in the foregoing method embodiment. For example, the determining module 902 may perform S612 in the above embodiments.

The communication apparatus provided in this embodiment may be configured to execute the communication method executed by the first terminal device in any method embodiment described above, and the implementation principle and the technical effect are similar, which are not described herein again.

Fig. 10 is a schematic structural diagram of another communication device according to an embodiment of the present application. The communication device can be a terminal device, or a chip, a chip module, a processor and the like in the terminal device. As shown in fig. 10, the communication apparatus 1000 according to the present embodiment includes: a transceiver 1001, a memory 1002, and a processor 1003. The transceiver 1001 may include: a transmitter and/or a receiver. The transmitter may also be referred to as a sender, a transmitter, a sending port or a sending interface, and the like, and the receiver may also be referred to as a receiver, a receiving port or a receiving interface, and the like. Illustratively, the transceiver 1001, the memory 1002, and the processor 1003 are connected to each other by a bus 1004.

The memory 1002 is used to store computer-executable instructions;

the processor 1003 is configured to execute the computer executable instructions stored in the memory, so as to enable the communication device 1000 to execute the method according to any one of the above embodiments.

The transmitter in the transceiver 1001 may be configured to perform the transmitting function of the terminal device in the foregoing method embodiment. The receiver in the transceiver 1001 may be configured to perform the receiving function of the terminal device in the above method embodiment. The processor 1003 may be configured to execute the communication method performed by the terminal device in the above method embodiment.

The communication apparatus provided in this embodiment may be configured to execute the communication method executed by the first terminal device in any of the above method embodiments, and the implementation principle and the technical effect are similar, which are not described herein again.

An embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a computer, the communication method executed by the first terminal device in any method embodiment is implemented, and the implementation principle and the technical effect of the communication method are similar, and are not described herein again.

An embodiment of the present application further provides a chip, including: the first terminal device executes the computer execution instruction, so as to implement the communication method executed by the first terminal device in any of the above method embodiments, where the implementation principle and the technical effect are similar, and details are not described here.

An embodiment of the present application further provides a computer program product, including a computer program, where the computer program is executed by a computer to implement the communication method executed by the first terminal device in any of the above method embodiments, and the implementation principle and the technical effect are similar, which are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and for example, the division of the modules is only one logical division, and other divisions may be realized in practice, for example, a plurality of modules may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.

The modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical units, may be located in one position, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.

In addition, functional modules in the embodiments of the present application may be integrated into one processing unit, or each module may exist alone physically, or two or more modules are integrated into one unit. The unit formed by the modules can be realized in a hardware form, and can also be realized in a form of hardware and a software functional unit.

The integrated module implemented in the form of a software functional module may be stored in a computer-readable storage medium. The software functional module is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to execute some steps of the methods according to the embodiments of the present application.

It should be understood that the Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in the incorporated application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor.

The memory may comprise a high-speed RAM memory, and may further comprise a non-volatile storage NVM, such as at least one disk memory, and may also be a usb disk, a removable hard disk, a read-only memory, a magnetic or optical disk, etc.

The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, the buses in the figures of the present application are not limited to only one bus or one type of bus.

The storage medium may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an Application Specific Integrated Circuits (ASIC). Of course, the processor and the storage medium may reside as discrete components in an electronic device or host device.

Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method of communication, comprising:

a first terminal device receives a plurality of different transport blocks TB through a plurality of physical sidelink shared channels PSSCH;

and the first terminal equipment sends hybrid automatic repeat request HARQ information corresponding to the different TBs on a Physical Sidelink Feedback Channel (PSFCH) resource, wherein the PSFCH resource comprises at least one Physical Resource Block (PRB) in a frequency domain.

2. The method of claim 1, wherein the first terminal device transmits HARQ information corresponding to the plurality of different TBs on PSFCH resources, comprising:

3. The method according to claim 1 or 2, wherein the PSFCH resources comprise time domain resources and frequency domain resources, and wherein before the first terminal device transmits HARQ information corresponding to the plurality of different TBs on the PSFCH resources, the method further comprises:

4. The method of claim 3, wherein the time domain indication information is used for indicating a time interval between a PSSCH transmitting each TB and a PSFCH transmitting its corresponding HARQ information;

and the first terminal equipment determines the time domain resource of the PSFCH resource according to the receiving time of a first PSSCH and the time interval between the first PSFCH corresponding to the first PSSCH, wherein the first PSSCH is used for transmitting one or more TBs in the multiple TBs.

5. The method of claim 3, wherein the time domain indication information is used to indicate a period of the PSFCH; the determining, by the first terminal device, the time domain resource of the PSFCH resource according to the time domain indication information includes:

6. The method of claim 3, wherein the time domain indication information is used for indicating a HARQ information feedback period; the determining, by the first terminal device, the time domain resource of the PSFCH resource according to the time domain indication information includes:

7. The method according to any of claims 3 to 6, wherein the frequency domain indication information comprises: an index of the at least one PRB;

8. The method according to any of claims 3 to 6, wherein the determining, by the first terminal device, the frequency domain resource of the PSFCH resource according to the time-frequency resource occupied by the PSSCH transmitting at least one TB of the plurality of TBs comprises:

the first terminal device determines the n PRBs as frequency domain resources of the PSFCH resources.

9. The method of claim 8 wherein the first number n is carried in Sidelink Control Information (SCI) or Radio Resource Control (RRC) signaling.

10. The method of claim 3, wherein the time domain indication information is carried in SCI or RRC signaling and/or the frequency domain indication information is carried in SCI or RRC signaling.

11. A communication apparatus, characterized in that the communication apparatus comprises:

a receiving module, configured to receive a plurality of different transport blocks TB via a plurality of physical sidelink shared channels pschs;

12. A communications apparatus, comprising: a processor, and a memory communicatively coupled to the processor;

the memory stores computer-executable instructions;

the processor executes computer-executable instructions stored by the memory to implement the method of any of claims 1 to 9.

13. A computer-readable storage medium, in which a computer program is stored which, when executed by a computer, causes the method of any one of claims 1 to 10 to be performed.

14. A computer program product, characterized in that it comprises a computer program which, when executed by a computer, causes the method of any one of claims 1 to 10 to be performed.