CN115997446A

CN115997446A - Side-link SL communication method and device

Info

Publication number: CN115997446A
Application number: CN202280004103.8A
Authority: CN
Inventors: 赵群
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2022-11-04
Filing date: 2022-11-04
Publication date: 2023-04-21
Also published as: WO2024092772A1

Abstract

The embodiment of the application discloses a SL communication method and a device thereof, which can be applied to a direct communication system, wherein the method comprises the following steps: and when the second time-frequency domain resource used by the PSFCH transmission opportunity corresponding to the first time-frequency domain resource used by the PSCCH and/or PSSCH transmission of the first RAT SL collides with the third time-frequency domain resource used by the SL transmission of the second RAT, enabling HARQ-ACK feedback corresponding to the PSCCH and/or PSSCH transmission. In the embodiment of the present application, the enabling or disabling of the HARQ-ACK feedback is determined, and in combination with the resource selection of PSCCH and/or PSSCH transmission, the HARQ-ACK feedback is disabled when the selected first time-frequency-domain resource causes a collision between the second time-frequency-domain resource and the third time-frequency-domain resource, so that the interference of the HARQ-ACK feedback on LTE SL transmission can be reduced.

Description

Side-link SL communication method and device

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a method and an apparatus for side uplink SL communications.

Background

The internet of vehicles (Vehicle to Everythin, V2X) may include vehicle-to-vehicle, vehicle-to-person, vehicle-to-roadside nodes in communication, and in order to better support information interaction between vehicle networks, a scheme for communication through a Side Link (SL) is proposed.

In the related art, internet of vehicles communication may support multiple radio access technologies (Radio Access Technology, RAT), such as long term evolution side uplink (Long Term Evolution Sidelink, LTE SL) and new air interface side uplink (New Radio Sidelink, NR SL).

In order to realize communication between LTE V2X and NR V2X devices, NR SL and LTE SL may be dynamically shared resources on the same carrier. Since NR SL introduces a physical direct feedback channel (Physical Sidelink Feedback Channel, PSFCH) to support feedback of hybrid automatic repeat ReQuest (Hybrid Automatic Repeat ReQuest, HARQ) Acknowledgements (ACKs). When the NR SL and the LTE SL dynamically share resources on the same carrier, the HARQ-ACK corresponding to the PSFCH transmission NR SL will often affect the LTE SL transmission.

Disclosure of Invention

The embodiment of the application provides a side-link SL communication method and device, which are used for avoiding the influence of HARQ-ACK of a PSFCH transmission NR SL on LTE SL transmission.

In a first aspect, an embodiment of the present application provides a SL communication method, including:

and when the second time-frequency domain resource used by the PSCCH and/or PSSCH transmission of the first RAT corresponding to the PSFCH transmission opportunity of the physical direct feedback channel is in conflict with the third time-frequency domain resource used by the SL transmission of the second RAT, enabling the HARQ feedback corresponding to the PSCCH and/or PSSCH transmission.

In the embodiment of the present invention, the enabling or disabling of the HARQ-ACK feedback may be combined with the resource selection of PSCCH and/or PSSCH transmission, so that the HARQ-ACK feedback may be disabled when the first time-frequency-domain resource is selected and the second time-frequency-domain resource and the third time-frequency-domain resource collide, so that the disabling process is more attached to the resource, and unnecessary disabling is avoided, so that the PSFCH may reasonably avoid LTE SL transmission, and interference of the HARQ-ACK feedback to LTE SL transmission may be reduced. In a second aspect, an embodiment of the present application provides a communications device, where the communications device has a function of implementing part or all of the functions of the terminal device in the method described in the first aspect, for example, a function of the communications device may be provided in some or all of the embodiments of the present application, or may be provided with a function of implementing any one of the embodiments of the present application separately. The functions may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the functions described above.

In one implementation, the communication device may include a transceiver module and a processing module in a structure configured to support the communication device to perform the corresponding functions in the method. The transceiver module is used for supporting communication between the communication device and other equipment. The communication device may further comprise a memory module for coupling with the transceiver module and the processing module, which holds the necessary computer programs and data of the communication device.

In a third aspect, embodiments of the present application provide a communications device comprising a processor, which when calling a computer program in memory, performs the method of the first aspect described above.

In a fourth aspect, embodiments of the present application provide a communication device comprising a processor and a memory, the memory having a computer program stored therein; the processor executes the computer program stored in the memory to cause the communication device to perform the method of the first aspect described above.

In a fifth aspect, embodiments of the present application provide a communications device comprising a processor and interface circuitry for receiving code instructions and transmitting to the processor, the processor being configured to execute the code instructions to cause the device to perform the method of the first aspect described above.

In a sixth aspect, an embodiment of the present invention provides a readable storage medium storing instructions for use by a network device as described above, which when executed, cause the network device to perform the method of the first aspect described above.

In a seventh aspect, the present application also provides a computer program product comprising a computer program which, when run on a computer, causes the computer to perform the method of the first aspect described above.

In an eighth aspect, the present application provides a chip system comprising at least one processor and an interface for supporting a network device to implement the functionality referred to in the first aspect, e.g. to determine or process at least one of data and information referred to in the above method. In one possible design, the chip system further includes a memory to hold computer programs and data necessary for the network device. The chip system can be composed of chips, and can also comprise chips and other discrete devices.

In a ninth aspect, the present application provides a computer program which, when run on a computer, causes the computer to perform the method of the first aspect described above.

Drawings

In order to more clearly describe the technical solutions in the embodiments or the background of the present application, the following description will describe the drawings that are required to be used in the embodiments or the background of the present application.

Fig. 1 is a schematic architecture diagram of a communication system according to an embodiment of the present application;

fig. 2 is a schematic flow chart of a SL communication method according to an embodiment of the present disclosure;

fig. 3 is a schematic flow chart of another SL communication method according to an embodiment of the present disclosure;

fig. 4 is a schematic flow chart of another SL communication method according to an embodiment of the present disclosure;

fig. 5 is a signaling interaction diagram of a SL communication method according to an embodiment of the present application;

fig. 6 is a schematic flow chart of another SL communication method according to an embodiment of the present disclosure;

fig. 7 is a schematic flow chart of another SL communication method according to an embodiment of the present disclosure;

fig. 8 is a schematic structural diagram of a communication device 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 a chip according to an embodiment of the present application.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as detailed in the accompanying claims.

The terminology used in the embodiments of the disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the disclosure. As used in this disclosure of embodiments and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.

It should be understood that although the terms first, second, third, etc. may be used in embodiments of the present disclosure to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, the first information may also be referred to as second information, and similarly, the second information may also be referred to as first information, without departing from the scope of embodiments of the present disclosure. Depending on the context, the term "if" as used herein may be interpreted as "at … …" or "at … …" or "in response to a determination" for purposes of brevity and ease of understanding, the terms "greater than" or "less than", "above" or "below" are used herein in characterizing the size relationship. But it will be appreciated by those skilled in the art that: the term "greater than" also encompasses the meaning of "greater than or equal to," less than "also encompasses the meaning of" less than or equal to "; the term "above" encompasses the meaning of "above and equal to" and "below" also encompasses the meaning of "below and equal to".

Terminology of art

Physical direct control channel (Physical Sidelink Control Channel, PSCCH)

Physical direct-connected shared channel (Physical Sidelink Control Channel, PSSCH)

Physical direct feedback channel (Physical Sidelink Feedback Channel, PSFCH)

Orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing)

Time division multiplexing (Time Division Multiplexing, TDM)

Reference signal received power (Reference Signal Receiving Power, RSRP)

Strength indication of received signal (Received Signal Strength Indicator, RSSI)

Direct connection control information (Sidelink Control Information, SCI)

Hybrid automatic repeat ReQuest (Hybrid Automatic Repeat ReQuest, HARQ)

Hybrid automatic repeat request acknowledgement (Hybrid Automatic Repeat Request Ack, HARQ-ACK)

In order to better understand a SL communication method disclosed in the embodiments of the present application, a communication system to which the embodiments of the present application are applicable is first described below.

Referring to fig. 1, fig. 1 is a schematic architecture diagram of a communication system according to an embodiment of the present application. The communication system may include, but is not limited to, one network device and one terminal device, and the number and form of devices shown in fig. 1 are only used as examples and not limiting to the embodiments of the present application, and may include two or more network devices and two or more terminal devices in practical applications. The communication system shown in fig. 1 is exemplified as including one network device 101 and two terminal devices 102.

It should be noted that, in the wireless communication system shown in fig. 1, the first terminal device 102 and the second terminal device 103 communicate through a sidlink direct link. In some embodiments, the first terminal device 102 may not directly connect to the network device 101, but may implement communication with the network device 101 through a relay of the second terminal device 103, where the first terminal device 102 that is not connected to the network device 101 is called a remote UE (remote UE), the second terminal device 103 that provides a relay function is called a relay UE (relay UE), and the remote UE and the relay UE communicate through a Sidelink unicast, and this architecture is called U2N (UE to NW, terminal device to network) relay.

It should be noted that the technical solution of the embodiment of the present application may be applied to various communication systems. For example: a third generation (3th Generation,3G) universal mobile telecommunications system (Universal Mobile Telecommunications System, UMTS) long term evolution (Long Term Evolution, LTE) system, a fifth generation (5th Generation,5G) mobile telecommunications system, a 5G New Radio (NR) system, a sixth generation (5th Generation,6G) mobile telecommunications system, or other future New mobile telecommunications systems, and the like. It should also be noted that the side link in the embodiments of the present application may also be referred to as a side link or a through link.

The network device 101 in the embodiment of the present application may include an entity on the network side for transmitting or receiving signals. For example, the network device 101 may be an evolved NodeB (eNB), a transmission point (Transmission Reception Point, TRP), a next generation NodeB (gNB) in an NR system, a base station in other future mobile communication systems, or an access node in a wireless fidelity (Wireless Fidelity, wiFi) system, etc. The embodiment of the application does not limit the specific technology and the specific device form adopted by the network device. The network device provided in this embodiment of the present application may be composed of a Central Unit (CU) and a Distributed Unit (DU), where the CU may also be referred to as a Control Unit (Control Unit), and the structure of the CU-DU may be used to split the protocol layers of the network device, for example, a base station, where functions of part of the protocol layers are placed in the CU for centralized Control, and functions of part or all of the protocol layers are Distributed in the DU for centralized Control of the DU by the CU.

The terminal device 102 in this embodiment of the present application is an entity on the user side for receiving or transmitting signals, such as a mobile phone. The Terminal device may also be referred to as a Terminal device (Terminal), a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal device (MT), etc. The terminal device may be an automobile with a communication function, a Smart car, a Mobile Phone, a wearable device, a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an augmented Reality (Augmented Reality, AR) terminal device, a wireless terminal device in industrial control (Industrial Control), a wireless terminal device in Self-driving (Self-driving), a wireless terminal device in teleoperation (Remote Medical Surgery), a wireless terminal device in Smart Grid (Smart Grid), a wireless terminal device in transportation security (Transportation Safety), a wireless terminal device in Smart City (Smart City), a wireless terminal device in Smart Home (Smart Home), or the like. The embodiment of the application does not limit the specific technology and the specific equipment form adopted by the terminal equipment.

In side link communication, there are 4 side link transmission modes. The side link transmission mode 1 and the side link transmission mode 2 are used for Device-To-Device (D2D) communication. Side link transmission mode 3 and side link transmission mode 4 are used for V2X communication. When the side link transmission mode 3 is employed, resource allocation is scheduled by the network device 101. Specifically, the network device 101 may transmit the resource allocation information to the terminal device 102, and then the terminal device 102 allocates resources to another terminal device, so that the other terminal device may transmit information to the network device 101 through the allocated resources. In V2X communication, a terminal device with a better signal or higher reliability may be used as the terminal device 102. The first terminal device mentioned in the embodiment of the present application may refer to the terminal device 102, and the second terminal device may refer to the other terminal device.

It may be understood that, the communication system described in the embodiments of the present application is for more clearly describing the technical solution of the embodiments of the present application, and is not limited to the technical solution provided in the embodiments of the present application, and those skilled in the art can know that, with the evolution of the system architecture and the appearance of a new service scenario, the technical solution provided in the embodiments of the present application is equally applicable to similar technical problems.

NR SL supports HARQ-ACK feedback for unicast and multicast traffic. The HARQ-ACK feedback information is transmitted over the PSFCH. Whether a PSCCH and/or PSSCH transmission enables HARQ-ACK feedback is set by the MAC layer according to service characteristics. The PSFCH time-frequency resources used for HARQ-ACK information transmission corresponding to one PSCCH and/or PSSCH transmission are determined according to the time-frequency resources and higher layer (pre) configuration of the PSCCH and/or PSSCH.

When configured, the PSFCH occupies the last 3 SL Orthogonal Frequency Division Multiplexing (OFDM) symbols (including AGC and GP symbols) of a slot. Within the same slot, PSFCH and PSCCH and/or PSSCH are multiplexed by TDM method, and the two are separated by 1 GP symbol. In slots where there is a PSFCH, a User Equipment (UE), also called a terminal device, may send only the PSCCH and/or PSSCH, only the PSFCH or both the PSCCH/PSSCH and the PSFCH.

When the NR SL and the LTE SL dynamically share resources on the same carrier, since the UE transmitting the NR PSCCH/PSSCH and the NR PSFCH may be different in 1 slot, a change in the reception power of the LTE SL UE operating on the same carrier may be caused. That is, the received power of the LTE SL user on the portion of the OFDM symbol occupied by NR SL PSCCH/PSSCH is different from the received power on the portion of the OFDM symbol occupied by NR SL PSFCH. Since different NR SL UEs may vary widely in distance from an LTE SL receiving UE, the received power on the two OFDM symbols may also vary widely for an LTE SL receiving UE. When the received power is very different on different OFDM symbols in the same slot, the received AGC of the LTE UE cannot work near the operating point, or time is required to adjust the AGC operating point, which affects the receiving performance of the LTE SL UE.

It should be noted that, the SL communication method provided in any of the embodiments of the present application may be performed alone or in combination with possible implementation methods in other embodiments, and may also be performed in combination with any one of the technical solutions of the related art.

The SL communication method and apparatus provided in the present application are described in detail below with reference to the accompanying drawings.

Referring to fig. 2, fig. 2 is a flow chart of a SL communication method according to an embodiment of the present application. The method is performed by the PSCCH and/or PSSCH sender of the first RAT SL, and as shown in fig. 2, the method includes, but is not limited to, the steps of:

s201, when the second time-frequency domain resource used by the PSFCH transmission opportunity corresponding to the first time-frequency domain resource used by the PSCCH and/or PSSCH transmission of the first RAT SL collides with the third time-frequency domain resource used by the second RAT SL transmission, the feedback of the HARQ-ACK corresponding to the PSCCH and/or PSSCH transmission is disabled.

In this embodiment of the present application, a time-frequency domain resource used for PSCCH and/or PSSCH transmission is defined as a first time-frequency domain resource, a time-frequency domain resource used for a PSFCH transmission opportunity corresponding to the first time-frequency domain resource is a second time-frequency domain resource, and a time-frequency domain resource used for a second RAT SL transmission is a third time-frequency domain resource, which can be understood that the transmission includes PSCCH and/or PSSCH transmission of the second RAT SL. It should be noted that this definition is applicable to various embodiments of the present application, and will not be described in detail later.

It is understood that HARQ-ACK feedback in the embodiments of the present application may refer to HARQ feedback corresponding to a HARQ process. HARQ feedback may be implemented in a variety of ways, for example, receiving a successful feedback ACK, receiving a failed feedback NACK; or feeding back NACK only when the reception fails, and not feeding back when the reception is successful; or feeding back the ACK only when the reception is successful, and not feeding back when the reception is failed. The present disclosure is not limited in this regard. In some implementations, the second time-frequency domain resource, which is the time-frequency domain resource of the PSCCH and/or PSSCH transmission opportunity used by the HARQ-ACK feedback corresponding to the PSCCH and/or PSSCH transmission may be determined according to the first time-frequency domain resource used by the PSCCH and/or PSSCH transmission, that is, a certain association exists between the first time-frequency domain resource and the second time-frequency domain resource, and the second time-frequency domain resource may be determined when the first time-frequency domain resource is determined. Wherein the association may have a higher level configuration or a pre-configuration or protocol convention.

In some implementations, the second time-frequency domain resources used by the HARQ-ACK feedback corresponding to PSCCH and/or PSSCH transmissions may also be configured or preconfigured at a higher layer.

In this embodiment of the present application, a third time-frequency domain resource used for SL transmission of the second RAT may be determined, and after determining the second time-frequency domain resource and the third time-frequency domain resource, whether the second time-frequency domain resource and the third time-frequency domain resource collide with each other may be determined.

Optionally, the collision may be that the second time-frequency domain resource coincides with the third time-frequency domain resource in the time domain; or the time unit where the second time-frequency domain resource is located coincides with the third time-frequency domain resource in the time domain.

And when the second time-frequency domain resource and the third time-frequency domain resource collide, the feedback of the HARQ-ACK corresponding to the PSCCH and/or PSSCH transmission is enabled, that is, when the second time-frequency domain resource and the third time-frequency domain resource collide, the feedback of the HARQ-ACK to the PSCCH and/or PSSCH transmission is not carried out any more. And enabling the PFSCH transmission to avoid the SL transmission of the second RAT through the feedback of the HARQ-ACK corresponding to the disable PSCCH and/or PSSCH transmission so as to ensure the SL transmission of the second RAT.

In some implementations, the first RAT may be NR and the second RAT is LTE. The PSCCH and/or PSSCH transmitting end of the NR SL may enable feedback of HARQ-ACK corresponding to PSCCH and/or PSSCH transmission when the second time-frequency domain resource used by the PSFCH transmission opportunity corresponding to the first time-frequency domain resource collides with the third time-frequency domain resource used by the LTE SL transmission.

It can be appreciated that the feedback to enable HARQ-ACK for PSCCH and/or PSSCH transmissions of the first RAT SL includes feedback indicating to enable HARQ-ACK for PSCCH/PSSCH transmissions in SCI carried by the PSCCH and/or PSSCH transmissions. That is, in the case that the HARQ-ACK corresponding to the PSCCH and/or PSSCH transmission of the first RAT SL determines whether to disable, the receiving end of the PSCCH and/or PSSCH transmission of the first RAT SL may be indicated that the HARQ-ACK is disabled through the SCI carried by the PSCCH/PSSCH transmission of the first RAT SL.

In some implementations, disabling (disable) HARQ feedback refers to the sender device informing the receiver device through an information field in the direct control information (SCI) that HARQ feedback is not required for the PSCCH/PSSCH transmission. Thus, the receiving end device does not feed back HARQ to the transmitting end device through PSFCH.

In some implementations, enabling HARQ feedback refers to the sender device informing the receiver device that HARQ feedback is needed for the PSCCH/PSSCH transmission through an information field in a direct control information (SCI). Thus, the receiving end device may feed back HARQ to the transmitting end device through the corresponding PSFCH.

It can be appreciated that the method provided in the embodiments of the present application is only performed for time-frequency domain resource selection of RAT SL transmissions requiring HARQ-ACK feedback. That is, the RAT SL transmission does not support HARQ-ACK feedback, and the method provided by the embodiments of the present application need not be performed. In some implementations, when performing time-frequency domain resource selection for RAT SL transmission, higher layer indication information may be received, which may be used to indicate whether the time-frequency domain resource selection takes HARQ-ACK feedback into account. In the case that the indication information indicates that the time-frequency domain resource selection does not consider HARQ-ACK feedback, the method provided by the embodiment of the present application does not need to be executed. The method provided by the embodiment of the application may be executed in the case that the indication information indicates that the time-frequency domain resource selection takes into account HARQ-ACK feedback. The description herein applies to each embodiment of the present application, and will not be described in detail later.

The time-frequency domain resource selection of the first RAT SL transmission is performed by the physical layer, or the time-frequency domain resource selection of the first RAT SL transmission is performed by the physical layer and the medium access control layer (Media Access Control, MAC).

In the embodiment of the present application, when the second time-frequency domain resource used by the PSFCH transmission opportunity corresponding to the first time-frequency domain resource used by the PSCCH and/or PSSCH transmission collides with the third time-frequency domain resource used by the SL transmission of the second RAT, feedback of HARQ-ACK corresponding to the PSCCH and/or PSSCH transmission is enabled. According to the method and the device, the enabling or disabling of the HARQ-ACK feedback can be combined with the resource selection of PSCCH and/or PSSCH transmission, under the condition that the first time-frequency-domain resource is selected to cause conflict between the second time-frequency-domain resource and the third time-frequency-domain resource, the HARQ-ACK feedback is disabled, the disabling process is enabled to be more attached to the resource condition, unnecessary disabling is avoided, the PSFCH can be reasonably enabled to avoid LTE SL transmission, the interference of the HARQ-ACK feedback to the LTE SL transmission can be reduced, further, through the selection of PSCCH and/or PSSCH resources of NR SL, more selectable time-frequency-domain resources of NR SL transmission can be possibly ensured, the signal quality of the time-frequency-domain resource occupied by NR SL transmission can be improved, and the performance of NR SL communication can be improved.

Referring to fig. 3, fig. 3 is a flow chart of a SL communication method according to an embodiment of the present application. The method is performed by the PSCCH and/or PSSCH sender of the first RAT SL, and as shown in fig. 3, the method includes, but is not limited to, the steps of:

and S301, acquiring monitoring and/or resource information of the second RAT SL.

In this embodiment, the monitoring and/or resource information of the second RAT SL includes at least one of the following information:

and the PSCCH and/or PSSCH of the second RAT SL are/is used for indicating the optional time-frequency domain resource for the PSCCH and/or PSSCH of the second RAT SL.

And the measurement information of the SL RSRP and/or the SL RSSI corresponding to the resource indication and/or the resource reservation information may represent signal quality of the PSCCH and/or the PSSCH of the second RAT SL for transmitting the optional time-frequency domain resource.

The second RAT SL monitors the generated first candidate set of resources according to the second RAT channel, and in some implementations, may determine PSCCH and/or PSSCH transmissions of the second RAT SL, i.e., time-frequency domain resources available for the second RAT SL transmissions, based on the resource indication and/or the resource reservation information. Further, the first set of candidate resources may be determined from time-frequency domain resources available for transmission of the second RAT SL. Optionally, all or part of the available time-frequency domain resources indicated by the resource indication and/or the resource reservation information may be included in the first candidate resource set. In some implementations, the time-frequency domain resources available for the second RAT SL transmission are determined based on the resource indication and/or the resource reservation information. Further, the available time-frequency domain resources may be screened according to the measurement information of the SL RSRP and/or the SL RSSI corresponding to the resource indication and/or the resource reservation information, and optionally, the available time-frequency domain resources used for the SL transmission of the second RAT may be selected when the measurement information of the SL RSRP and/or the SL RSSI corresponding to the resource indication and/or the resource reservation information is greater than a set threshold. Alternatively, the set threshold may be determined based on a network indication or protocol convention or preconfigured manner.

Further, a first candidate resource set is obtained according to the time-frequency domain resources used by the second RAT SL transmission. Wherein the first candidate resource set includes fourth time-frequency domain resources recommended or allowed to be used by the first RAT SL, and/or includes fifth time-frequency domain resources not recommended or allowed to be used by the first RAT SL.

It can be appreciated that, in the case where the PSCCH and/or PSSCH transmission of the first RAT SL uses the fourth time-frequency domain resource, the second time-frequency domain resource used by the PFSCH transmission opportunity corresponding to the fourth time-frequency domain resource does not overlap with the third time-frequency domain resource used by the second RAT SL transmission.

When the PSCCH and/or PSSCH transmission of the first RAT SL uses the fifth time-frequency domain resource, the second time-frequency domain resource used by the PFSCH transmission opportunity corresponding to the fifth time-frequency domain resource overlaps with the third time-frequency domain resource used by the second RAT SL transmission.

S302, according to the monitoring and/or resource information of the second RAT SL, whether the second time-frequency domain resource conflicts with the third time-frequency domain resource is determined.

In some implementations, determining a third time-frequency domain resource according to the resource indication and/or the resource reservation information, and determining that a conflict occurs when the third time-frequency domain resource coincides with the second time-frequency domain resource or a time unit where the second time-frequency domain resource is located in a time domain; and/or the number of the groups of groups,

In some implementations, according to the resource indication and/or the resource reservation information, determining a third time-frequency domain resource used by the SL transmission of the second RAT, where the measurement information of the SL RSRP and/or the SL RSSI corresponding to the resource indication and/or the resource reservation information is greater than a set threshold, and when the third time-frequency domain resource coincides with the second time-frequency domain resource or a time unit where the second time-frequency domain resource is located in a time domain, determining that a conflict occurs; and/or the number of the groups of groups,

in some implementations, when the first candidate resource set includes a fourth time-frequency domain resource and the second time-frequency domain resource does not belong to the fourth time-frequency domain resource, determining that a collision occurs; and/or;

in some implementations, the collision is determined to occur when the fifth time-frequency domain resource is included in the first set of candidate resources and the second time-frequency domain resource belongs to the fifth time-frequency domain resource.

S303, when the second time-frequency domain resource collides with the third time-frequency domain resource, the feedback of HARQ-ACK corresponding to PSCCH and/or PSSCH transmission of the first RAT SL is enabled.

For a specific description of step S303, reference may be made to the description of the related content in the above embodiment, which is not repeated here.

Referring to fig. 4, fig. 4 is a flow chart of a SL communication method according to an embodiment of the present application. The method is performed by the PSCCH and/or PSSCH sender of the first RAT SL, and as shown in fig. 4, the method includes, but is not limited to, the steps of:

s401, determining a second candidate resource set for PSCCH and/or PSSCH transmission of the first RAT SL.

Wherein the second candidate resource set does not include a sixth time-frequency domain resource, wherein the sixth time-frequency domain resource has the following characteristics: the PSCCH and/or PSSCH transmission of the first RAL SL collides with the third time-frequency domain resource using a second time-frequency domain resource corresponding to the sixth time-frequency domain resource. That is, the second candidate resource set excludes candidate time-frequency domain resources of PSCCH and/or PSSCH transmissions for which the corresponding PSFCH transmission opportunity collides with the second RAT SL transmission. It is to be appreciated that the time-frequency domain resources included in the second candidate resource set, when utilized for PSCCH and/or PSSCH transmission, correspond to time-frequency domain resources of the PSFCH that do not collide or overlap with time-frequency domain resources utilized for the second RAT SL transmission.

In some implementations, a second candidate set of resources for PSCCH and/or PSSCH transmission of the first RAT SL may be determined based on the network indication. Alternatively, the network device may send indication information, which may indicate time-frequency domain resources for PSCCH and/or PSSCH transmission, e.g., the indication information may be an index of time-frequency domain resources available for SCCH and/or PSSCH transmission. In the embodiment of the present application, the second candidate resource set is determined by indicating the time-frequency domain resources for PSCCH and/or PSSCH transmission.

In other implementations, the time-frequency domain resources for PSCCH and/or PSSCH transmissions may be determined based on higher layer configuration and based on higher layer configuration information, thereby yielding a second set of candidate resources.

In other implementations, the second candidate set of resources for PSCCH and/or PSSCH transmissions of the first RAT SL may be determined by a protocol convention that time-frequency domain resources meeting a set condition may be available for PSCCH and/or PSSCH transmissions of the first RAT SL, such as a quality condition, or a particular time-frequency location.

S402, determining whether PSCCH and/or PSSCH transmission of the first RAT SL enables HARQ-ACK feedback according to the second set of candidate resources.

Since the second candidate resource set does not include the sixth time-frequency domain resource, i.e. the candidate time-frequency domain resource of the PSCCH and/or PSSCH transmission that has collided with the corresponding PSFCH transmission opportunity and the second RAT SL transmission is already excluded. In this embodiment, when determining the first time-frequency domain resource used for PSCCH and/or PSSCH transmission from the second candidate resource set, the second time-frequency domain resource used for the PSFCH transmission opportunity corresponding to the first time-frequency domain resource may not collide or overlap with the third time-frequency domain resource used for SL transmission of the second RAT, and when the HARQ-ACK corresponding to PSCCH and/or PSSCH transmission is fed back through the second time-frequency domain resource, PSCCH and/or PSSCH transmission of the second RAL SL may not be affected, so that feedback of the HARQ-ACK corresponding to PSCCH and/or PSSCH transmission of the first RAT SL may be enabled.

If the first time-frequency domain resource used by the PSCCH and/or PSSCH transmission does not belong to the second candidate resource set, optionally, directly disabling HARQ-ACK feedback corresponding to the PSCCH and/or PSSCH transmission. Optionally, it may be determined whether the second time-frequency domain resource collides with the third time-frequency domain resource, and in case of collision, HARQ-ACK feedback corresponding to PSCCH and/or PSCCH transmission of the first RAT SL is enabled. By disabling the HARQ-ACK feedback corresponding to the PSCCH and/or PSSCH transmission, the HARQ-ACK feedback corresponding to the PSCCH and/or PSSCH transmission may be avoided from the second RAT SL transmission, so as to ensure normal transmission of the second RAT SL.

It can be appreciated that the feedback to enable HARQ-ACK for PSCCH and/or PSSCH transmissions of the first RAT SL includes feedback indicating to enable HARQ-ACK for PSCCH/PSSCH transmissions in SCI carried by the PSCCH and/or PSSCH transmissions. That is, in the case that the HARQ-ACK corresponding to the PSCCH and/or PSSCH transmission of the first RAT SL determines whether to disable, the HARQ-ACK may be indicated to the receiving end of the PSCCH and/or PSSCH transmission of the first RAT SL by the side uplink control information SCI carried by the PSCCH/PSSCH transmission of the first RAT SL.

It should be noted that the physical layer may determine the second candidate resource set, report the second candidate resource set to the MAC layer, and the MAC layer may determine the first time-frequency domain resource occupied by PSCCH and/or PSSCH transmission of the first RAT SL based on the second candidate resource set.

In the embodiment of the present invention, the enabling or disabling of the HARQ-ACK feedback may be combined with the resource selection of PSCCH and/or PSSCH transmission, so that the HARQ-ACK feedback may be disabled when the first time-frequency-domain resource is selected and the second time-frequency-domain resource and the third time-frequency-domain resource collide, so that the disabling process is more attached to the resource, and unnecessary disabling is avoided, so that the PSFCH may reasonably avoid LTE SL transmission, and interference of the HARQ-ACK feedback to LTE SL transmission may be reduced.

Referring to fig. 5, fig. 5 is a flow chart of a SL communication method according to an embodiment of the present application. The method is performed by the PSCCH and/or PSSCH sender of the first RAT SL, and as shown in fig. 5, the method includes, but is not limited to, the steps of:

S501, a second candidate set of resources for PSCCH and/or PSSCH transmission of the first RAT SL is determined.

Wherein the second candidate resource set does not include a sixth time-frequency domain resource, wherein the sixth time-frequency domain resource has the following characteristics: the PSCCH and/or PSSCH transmission of the first RAL SL collides with the third time-frequency domain resource using a second time-frequency domain resource corresponding to the sixth time-frequency domain resource.

For a specific description of step S501, reference may be made to the description of the related content in the above embodiment, and the description is omitted here.

S502, a third candidate set of resources for PSCCH and/or PSSCH transmission of the first RAT SL is determined.

Wherein the sixth time-frequency domain resource is included in the third candidate resource set.

S503, determining a first time-frequency domain resource used by PSCCH and/or PSSCH transmission of the first RAT SL from the third candidate resource set.

In this embodiment of the present application, the time-frequency domain resources included in the third candidate resource set include not only the sixth time-frequency domain resource but also a seventh time-frequency domain resource, where the seventh time-frequency domain resource has the following characteristics: the PSCCH and/or PSSCH transmission of the first RAL SL uses the second time-frequency domain resource corresponding to the seventh time-frequency domain resource without collision with the third time-frequency domain resource. It is to be appreciated that the second set of candidate resources can include one or more seventh time-frequency domain resources.

S504, when the first time-frequency domain resource belongs to the second candidate resource set, enabling feedback of HARQ-ACK corresponding to PSCCH and/or PSSCH transmission of the first RAT SL.

If the first time-frequency domain resource determined from the third candidate resource set belongs to the second candidate resource set, that is, the determined first time-frequency domain resource is the seventh time-frequency domain resource, it is indicated that the second time-frequency domain resource corresponding to the determined first time-frequency domain resource and the third time-frequency domain resource cannot collide, and when the HARQ-ACK corresponding to the PSCCH and/or PSSCH transmission is fed back through the second time-frequency domain resource, PSCCH and/or PSSCH transmission of the second RAL SL cannot be affected, and the PSCCH and/or HARQ-ACK corresponding to the PSSCH transmission of the first RAT SL can be fed back through the PFSCH.

S505, when the first time-frequency domain resource does not belong to the second candidate resource set, disabling feedback of HARQ-ACK corresponding to PSCCH and/or PSSCH transmission of the first RAT SL.

If the first time-frequency domain resource determined from the third candidate resource set does not belong to the second candidate resource set, that is, the determined first time-frequency domain resource is the sixth time-frequency domain resource, it is indicated that the second time-frequency domain resource corresponding to the determined first time-frequency domain resource conflicts with the third time-frequency domain resource, when the HARQ-ACK corresponding to PSCCH and/or PSSCH transmission is fed back through the second time-frequency domain resource, PSCCH and/or PSSCH transmission of the second RAL SL is affected, and HARQ-ACK corresponding to PSCCH and/or PSSCH transmission of the first RAT SL can be disabled to be fed back through the PFSCH, and normal transmission of the second RAT SL is ensured by letting HARQ-ACK corresponding to PSCCH and/or PSSCH transmission back to avoid the second RAT SL transmission.

It should be noted that the physical layer may determine the second candidate resource set and the third candidate resource set respectively, report the second candidate resource set and the third candidate resource set to the MAC layer, and the MAC layer determines the first time-frequency domain resources occupied by PSCCH and/or PSSCH transmission of the first RAT SL based on the second candidate resource set and the third candidate resource set.

Referring to fig. 6, fig. 6 is a flow chart of a SL communication method according to an embodiment of the present application. The method is performed by the PSCCH and/or PSSCH sender of the first RAT SL, and as shown in fig. 6, the method includes, but is not limited to, the steps of:

s601, a second candidate set of resources for PSCCH and/or PSSCH transmission of the first RAT SL is determined.

For a specific description of step S601, reference may be made to the description of the related content in the above embodiment, and the description is omitted here.

S602, when the number of the candidate resources in the second candidate resource set is smaller than the set number of resources, determining a third candidate resource set.

In the embodiment of the present application, the number of candidate resources in the second candidate resource set may be determined, and when the number of candidate resources is smaller than the set number of resources, a third candidate resource set is determined for PSCCH and/or PSSCH transmission of the first RAT SL. That is, the sixth time-frequency domain resource has the following features: the PSCCH and/or PSSCH transmission of the first RAL SL collides with the third time-frequency domain resource using a second time-frequency domain resource corresponding to the sixth time-frequency domain resource. In order to ensure that the PSCCH and/or PSSCH transmissions of the first RAL SL are performed normally when the number of time-frequency domain resources that do not have the above characteristics is small, it is necessary to continue to select a part of the time-frequency domain resources from the time-frequency domain resources that do not have the above characteristics as the third candidate resource set.

S603, determining a first time-frequency domain resource used by PSCCH and/or PSSCH transmission of the first RAT SL.

Alternatively, the first time-frequency domain resources used for PSCCH and/or PSSCH transmissions of the first RAT SL may be determined in the second set of candidate resources.

Optionally, the first time-frequency domain resources used for PSCCH and/or PSSCH transmission of the first RAT SL may be determined in a third set of candidate resources.

Optionally, the first time-frequency domain resource may be preferentially determined from the second candidate resource set, and when the resources in the second candidate resource set are selected to be empty or the number of resources in the second candidate resource set is smaller than the set number of resources, the first time-frequency domain resource is determined from the third candidate resource set.

S604, when the first time-frequency domain resource belongs to the second candidate resource set, enabling feedback of HARQ-ACK corresponding to PSCCH and/or PSSCH transmission of the first RAT SL.

S605, when the first time-frequency domain resource does not belong to the second candidate resource set, the feedback of HARQ-ACK corresponding to PSCCH and/or PSSCH transmission of the first RAT SL is disabled.

For a specific description of steps S604 and S605, reference may be made to the description of the related content in the above embodiment, and the description is omitted here.

Optionally, in the case that the HARQ-ACK corresponding to the PSCCH and/or PSSCH transmission of the first RAT SL determines whether to disable, the receiving end of the PSCCH and/or PSSCH transmission of the first RAT SL may be indicated whether to disable through the side uplink control information SCI carried by the PSCCH/PSSCH transmission of the first RAT SL.

It should be noted that, the physical layer may determine the second candidate resource set first, determine the third candidate resource set again when the number of resources in the second candidate resource set is insufficient, report the second candidate resource set and the third candidate resource set to the MAC layer, and the MAC layer determines the first time-frequency domain resource occupied by PSCCH and/or PSSCH transmission of the first RAT SL based on the second candidate resource set and the third candidate resource set.

Referring to fig. 7, fig. 7 is a flow chart of a SL communication method according to an embodiment of the present application. The method is performed by the PSCCH and/or PSSCH sender of the first RAT SL, and as shown in fig. 7, the method includes, but is not limited to, the steps of:

s701, a third candidate set of resources for PSCCH and/or PSSCH transmission of the first RAT SL is determined.

Wherein the third candidate resource set includes a sixth time-frequency domain resource.

In this embodiment of the present application, the time-frequency domain resources included in the third candidate resource set include not only a sixth time-frequency domain resource, but also a seventh time-frequency domain resource, where the sixth time-frequency domain resource has the following characteristics: the PSCCH and/or PSSCH transmission of the first RAL SL collides with the third time-frequency domain resource using a second time-frequency domain resource corresponding to the sixth time-frequency domain resource. And the seventh time-frequency domain resource has the following characteristics: the PSCCH and/or PSSCH transmission of the first RAL SL uses the second time-frequency domain resource corresponding to the seventh time-frequency domain resource without collision with the third time-frequency domain resource.

For a specific description of step S701, reference may be made to the description of the related content in the above embodiment, which is not repeated here.

S702, determining a second candidate resource set on the basis of the third candidate resource set.

And further, selecting time-frequency domain resources from the third candidate resource set on the basis of determining the third candidate resource set so as to obtain a second candidate resource set. Wherein the second set of candidate resources does not include the sixth time-frequency domain resource. In some implementations, one or more seventh time-frequency domain resources are selected from the third set of candidate resources for determining the second set of candidate resources.

S703, determining whether the PSCCH and/or PSSCH transmission of the first RAT SL enables HARQ-ACK feedback according to the second candidate resource set.

Optionally, when the first time-frequency domain resource belongs to the second candidate resource set, enabling feedback of HARQ-ACK corresponding to PSCCH and/or PSSCH transmission of the first RAT SL; or when the first time-frequency domain resource does not belong to the second candidate resource set, enabling feedback of HARQ-ACK corresponding to PSCCH and/or PSSCH transmission of the first RAT SL.

In this embodiment of the present application, the physical layer may first determine a third candidate resource set, determine a second candidate resource set based on the third candidate resource set, report the second candidate resource set of the third candidate resource set to the MAC layer, and determine, by the MAC layer, a first time-frequency domain resource occupied by PSCCH and/or PSSCH transmission of the first RAT SL based on the second candidate resource set and the third candidate resource set.

In the embodiments provided in the present application, the method provided in the embodiments of the present application is described from the perspective of the transmitting end of the PSCCH and/or PSSCH of the first RAT SL. In order to implement the functions in the method provided in the embodiments of the present application, the transmitting end of the PSCCH and/or PSSCH of the first RAT SL may include a hardware structure, a software module, and implement the functions in the form of a hardware structure, a software module, or a hardware structure plus a software module. Some of the functions described above may be implemented in a hardware structure, a software module, or a combination of a hardware structure and a software module.

Fig. 8 is a schematic structural diagram of a communication device 800 according to an embodiment of the present application. The communication device 800 shown in fig. 8 may include a transceiver module 801 and a processing module 802. The transceiver module 801 may include a transmitting module for implementing a transmitting function and/or a receiving module for implementing a receiving function, and the transceiver module 801 may implement a transmitting function and/or a receiving function.

The communication device 800 may be a terminal device, a device in a terminal device, or a device that can be used in cooperation with a terminal device. Alternatively, the communication device 800 may be a network device, a device in a network device, or a device that can be used in cooperation with a network device.

The communication device 800 may be a PSCCH and/or PSSCH sender of the first RAT SL as in the above embodiments.

A processing module 802, configured to disable HARQ feedback corresponding to the PSCCH and/or PSSCH transmission when a collision occurs between a second time-frequency domain resource used by a physical direct feedback channel PSFCH transmission opportunity corresponding to the first time-frequency domain resource used by the PSCCH and/or PSSCH transmission and a third time-frequency domain resource used by the SL transmission of the second RAT.

In some implementations, the second time-frequency domain resource coincides with the third time-frequency domain resource in the time domain; or the time unit where the second time-frequency domain resource is located coincides with the third time-frequency domain resource in the time domain.

In some implementations, the first RAT is a new air interface, NR, and the second RAT is long term evolution, LTE.

In some implementations, the processing module 802 is further to:

acquiring monitoring and/or resource information of the second RAT SL;

and determining whether the second time-frequency domain resource collides with the third time-frequency domain resource according to the monitoring and/or resource information.

In some implementations, the listening and/or resource information includes at least one of the following information:

Resource indication and/or resource reservation information transmitted on a PSCCH and/or a PSCCH of the second RAT SL;

measuring information of a side-link reference signal received power SL RSRP and/or a strength indication SL RSSI of a side-link received signal corresponding to the resource indication and/or the resource reservation information;

the second RAT SL listens to the generated first candidate resource set according to the second RAT channel, wherein the first candidate resource set includes fourth time-frequency domain resources recommended or allowed to be used by the first RAT SL, and/or includes fifth time-frequency domain resources not recommended or allowed to be used by the first RAT SL.

In some implementations, the processing module 802 is further to:

determining the third time-frequency domain resource according to the resource indication and/or the resource reservation information, and determining that conflict occurs when the third time-frequency domain resource coincides with the second time-frequency domain resource or a time unit where the second time-frequency domain resource is located in the time domain; and/or the number of the groups of groups,

determining the third time-frequency domain resource used by SL transmission of the second RAT according to the resource indication and/or the resource reservation information, wherein the measurement information of SL RSRP and/or SL RSSI corresponding to the resource indication and/or the resource reservation information is larger than a set threshold value, and when the third time-frequency domain resource coincides with the second time-frequency domain resource or a time unit where the second time-frequency domain resource is located in a time domain, the conflict is determined; and/or the number of the groups of groups,

When the first candidate resource set comprises the fourth time-frequency domain resource and the second time-frequency domain resource does not belong to the fourth time-frequency domain resource, determining that collision occurs; and/or;

and when the first candidate resource set comprises the fifth time-frequency domain resource and the second time-frequency domain resource belongs to the fifth time-frequency domain resource, determining that collision occurs.

In some implementations, the processing module 802 is further to:

determining a second candidate resource set of the PSCCH and/or PSSCH transmission, wherein the second candidate resource set does not comprise a sixth time-frequency domain resource, and the second time-frequency domain resource corresponding to the PSCCH and/or PSSCH transmission by using the sixth time-frequency domain resource collides with the third time-frequency domain resource;

and determining whether the PSCCH and/or PSSCH transmission enables HARQ feedback according to the second candidate resource set.

In some implementations, the processing module 802 is further to:

and determining a first time-frequency domain resource used by the PSCCH and/or PSSCH transmission from the second candidate resource set, and enabling HARQ feedback corresponding to the PSCCH and/or PSSCH transmission.

In some implementations, the processing module 802 is further to:

Determining a third candidate resource set of the PSCCH and/or PSSCH transmission, wherein the third candidate resource set comprises the sixth time-frequency domain resource;

and determining first time-frequency domain resources used by the PSCCH and/or PSSCH transmission from the third candidate resource set.

In some implementations, the processing module 802 is further to:

enabling HARQ feedback corresponding to the PSCCH and/or PSSCH transmission when the first time-frequency domain resource belongs to the second candidate resource set; or,

and when the first time-frequency domain resource does not belong to the second candidate resource set, enabling the feedback of HARQ corresponding to the PSCCH and/or PSSCH transmission.

In some implementations, the processing module 802 is further to:

preferentially determining the first time-frequency domain resource from the second candidate resource set when the second candidate resource set and the third candidate resource set coexist;

and when the resources in the second candidate resource set are selected to be empty or the number of the resources in the second candidate resource set is smaller than the set number of the resources, determining the first time-frequency domain resources from the third candidate resource set.

In some implementations, the processing module 802 is further to:

And determining the third candidate resource set when the number of candidate resources in the second candidate resource set is smaller than the set number of resources.

In some implementations, the processing module 802 is further to:

the second set of candidate resources is determined based on the third set of candidate resources.

In some implementations, the processing module 802 is further to:

and indicating whether the HARQ feedback is disabled or not based on direct control information SCI carried by the PSCCH and/or PSSCH transmission.

Referring to fig. 9, fig. 9 is a schematic structural diagram of another communication device 900 according to an embodiment of the present application. The communication apparatus 900 may be a transmitting end of a PSCCH and/or a PSSCH of the first RAT SL, or the transmitting end may support a chip, a chip system, a processor, or the like for implementing the method, or may support a chip, a chip system, a processor, or the like for implementing the method by the second node, or may support a chip, a chip system, a processor, or the like for implementing the method by the third node. The device can be used for realizing the method described in the method embodiment, and can be particularly referred to the description in the method embodiment.

The communications device 900 may include one or more processors 901. The processor 901 may be a general purpose processor or a special purpose processor, etc. For example, a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processor may be used to control communication devices (e.g., base stations, baseband chips, terminal equipment chips, DUs or CUs, etc.), execute computer programs, and process data of the computer programs.

Optionally, the communication device 900 may further include one or more memories 902, on which a computer program 904 may be stored, and the processor 901 executes the computer program 904, so that the communication device 900 performs the method described in the above method embodiments. Optionally, the memory 902 may also store data. The communication device 900 and the memory 902 may be provided separately or may be integrated.

Optionally, the communication device 900 may further comprise a transceiver 905, an antenna 906. The transceiver 905 may be referred to as a transceiver unit, transceiver circuitry, or the like, for implementing a transceiver function. The transceiver 905 may include a receiver, which may be referred to as a receiver or a receiving circuit, etc., for implementing a receiving function, and a transmitter; the transmitter may be referred to as a transmitter or a transmitting circuit, etc., for implementing a transmitting function.

Optionally, one or more interface circuits 909 may also be included in the communication means 900. The interface circuit 909 is configured to receive a code instruction and transmit it to the processor 901. The processor 901 executes the code instructions to cause the communication device 900 to perform the methods described in the method embodiments described above.

The communication apparatus 900 is a terminal device that can be used to perform the functions of the terminal device in the above embodiments.

The communication apparatus 900 is a network device: can be used to perform the functions of the terminal device in the above embodiments.

In one implementation, a transceiver for implementing the receive and transmit functions may be included in processor 901. For example, the transceiver may be a transceiver circuit, or an interface circuit. The transceiver circuitry, interface or interface circuitry for implementing the receive and transmit functions may be separate or may be integrated. The transceiver circuit, interface or interface circuit may be used for reading and writing codes/data, or the transceiver circuit, interface or interface circuit may be used for transmitting or transferring signals.

In one implementation, the processor 901 may store a computer program 903, where the computer program 903 runs on the processor 901, and may cause the communication device 900 to perform the method described in the above method embodiment. The computer program 903 may be solidified in the processor 901, in which case the processor 901 may be implemented in hardware.

In one implementation, the communication apparatus 900 may include circuitry that may implement the functions of transmitting or receiving or communicating in the foregoing method embodiments. The processors and transceivers described herein may be implemented on integrated circuits (integrated circuit, ICs), analog ICs, radio frequency integrated circuits RFICs, mixed signal ICs, application specific integrated circuits (application specific integrated circuit, ASIC), printed circuit boards (printed circuit board, PCB), electronic devices, and the like. The processor and transceiver may also be fabricated using a variety of IC process technologies such as complementary metal oxide semiconductor (complementary metal oxide semiconductor, CMOS), N-type metal oxide semiconductor (NMOS), P-type metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (bipolar junction transistor, BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

The communication apparatus described in the above embodiment may be a network device or a terminal device (such as the first terminal device in the foregoing method embodiment), but the scope of the communication apparatus described in the present application is not limited thereto, and the structure of the communication apparatus may not be limited by fig. 9. The communication means may be a stand-alone device or may be part of a larger device. For example, the communication device may be:

(1) A stand-alone integrated circuit IC, or chip, or a system-on-a-chip or subsystem;

(2) A set of one or more ICs, optionally including storage means for storing data, a computer program;

(3) An ASIC, such as a Modem (Modem);

(4) Modules that may be embedded within other devices;

(5) A receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handset, a mobile unit, a vehicle-mounted device, a network device, a cloud device, an artificial intelligent device, and the like;

(6) Others, and so on.

For the case where the communication device may be a chip or a chip system, reference may be made to the schematic structural diagram of the chip shown in fig. 10. The chip 1000 shown in fig. 10 includes a processor 1001 and an interface 1002. Wherein the number of processors 1001 may be one or more, and the number of interfaces 1002 may be a plurality.

For the chip 1000, the functions of the transmitting end of the PSCCH and/or PSSCH of the first RAT SL in the embodiments of the present application may be implemented:

the processor 1001 is configured to disable HARQ feedback corresponding to the PSCCH and/or PSSCH transmission when a collision occurs between a second time-frequency domain resource used by a physical direct feedback channel PSFCH transmission opportunity corresponding to the first time-frequency domain resource used by the PSCCH and/or PSSCH transmission and a third time-frequency domain resource used by the SL transmission of the second RAT.

In some implementations, the processor 1001 is further configured to:

acquiring monitoring and/or resource information of the second RAT SL;

In some implementations, the processor 1001 is further configured to:

and when the first time-frequency domain resource does not belong to the second candidate resource set, enabling HARQ feedback corresponding to the PSCCH and/or PSSCH transmission.

In some implementations, the processor 1001 is further configured to:

and indicating whether the feedback of the HARQ-ACK is disabled or not based on direct control information SCI carried by the PSCCH and/or PSSCH transmission.

The chip 1000 further comprises a memory 1003, the memory 1003 being used for storing the necessary computer programs and data.

Those of skill in the art will also appreciate that the various illustrative logical blocks (Illustrative Logical Block) and steps (Step) described in connection with the embodiments herein may be implemented as electronic hardware, computer software, or combinations of both. Whether such functionality is implemented as hardware or software depends upon the particular application and design requirements of the overall system. Those skilled in the art may implement the described functionality in varying ways for each particular application, but such implementation is not to be understood as beyond the scope of the embodiments of the present application.

The embodiment of the application also provides a communication system, which comprises the communication device as the transmitting end in the embodiment of fig. 8, or comprises the communication device as the transmitting end in the embodiment of fig. 9.

The present application also provides a readable storage medium having instructions stored thereon which, when executed by a computer, perform the functions of any of the method embodiments described above.

The present application also provides a computer program product which, when executed by a computer, implements the functions of any of the method embodiments described above.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer programs. When the computer program is loaded and executed on a computer, the flow or functions described in accordance with embodiments of the present application are fully or partially produced. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer program may be stored in or transmitted from one computer readable storage medium to another, for example, by wired (e.g., coaxial cable, optical fiber, digital subscriber line (Digital Subscriber Line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means from one website, computer, server, or data center. The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., a floppy Disk, a hard Disk, a magnetic tape), an optical medium (e.g., a high-density digital video disc (Digital Video Disc, DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like.

Those of ordinary skill in the art will appreciate that: the first, second, etc. numbers referred to in this application are merely for convenience of description and are not intended to limit the scope of the embodiments of the present application, but also to indicate the sequence.

At least one of the present application may also be described as one or more, and a plurality may be two, three, four or more, and the present application is not limited thereto. In the embodiment of the present application, for a technical feature, the technical features of the technical feature are distinguished by "first", "second", "third", "a", "B", "C", and "D", and the technical features described by "first", "second", "third", "a", "B", "C", and "D" are not in sequence or in order of magnitude.

The correspondence relationship shown in each table in the present application may be configured or predefined. The values of the information in each table are merely examples, and may be configured as other values, which are not limited in this application. In the case of the correspondence between the configuration information and each parameter, it is not necessarily required to configure all the correspondence shown in each table. For example, in the table in the present application, the correspondence shown by some rows may not be configured. For another example, appropriate morphing adjustments, e.g., splitting, merging, etc., may be made based on the tables described above. The names of the parameters indicated in the tables may be other names which are understood by the communication device, and the values or expressions of the parameters may be other values or expressions which are understood by the communication device. When the tables are implemented, other data structures may be used, for example, an array, a queue, a container, a stack, a linear table, a pointer, a linked list, a tree, a graph, a structure, a class, a heap, a hash table, or a hash table.

Predefined in this application may be understood as defining, predefining, storing, pre-negotiating, pre-configuring, curing, or pre-firing. Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method of side-link SL communication, performed by a physical direct control channel PSCCH and/or a physical direct shared channel pscsch sender of a first radio access technology, RAT SL, the method comprising:

and under the condition that a second time-frequency domain resource used by a physical direct feedback channel PSFCH transmission opportunity corresponding to the first time-frequency domain resource used by PSCCH and/or PSSCH transmission conflicts with a third time-frequency domain resource used by SL transmission of a second RAT, enabling the HARQ feedback corresponding to the PSCCH and/or PSSCH transmission.

2. The method of claim 1, wherein the second time-frequency domain resource collides with the third time-frequency domain resource in any of the following cases:

the second time-frequency domain resource and the third time-frequency domain resource are overlapped in a time domain; or,

and the time unit where the second time-frequency domain resource is located coincides with the third time-frequency domain resource in the time domain.

3. The method of claim 1, wherein the first RAT is a new air interface, NR, and the second RAT is long term evolution, LTE.

4. The method according to claim 1, wherein the method further comprises:

Acquiring monitoring and/or resource information of the second RAT SL;

5. The method of claim 4, wherein the listening and/or resource information comprises at least one of:

6. The method of claim 4 or 5, wherein the determining whether a collision has occurred comprises:

7. The method according to any one of claims 1-6, further comprising:

8. The method of claim 7, wherein the method further comprises:

9. The method according to claim 7, characterized in that the method comprises:

10. The method according to claim 9, characterized in that the method comprises:

11. The method according to claim 9, wherein the method further comprises:

12. The method according to claim 9, wherein the method further comprises:

13. The method according to claim 9, wherein the method further comprises:

14. The method according to claim 1, wherein the method further comprises:

15. A communication device, comprising:

And the processing module is used for enabling HARQ feedback corresponding to the PSCCH and/or PSSCH transmission when the second time-frequency domain resource used by the PSFCH transmission opportunity of the physical direct feedback channel corresponding to the PSCCH and/or PSSCH transmission of the first RAT collides with the third time-frequency domain resource used by the SL transmission of the second RAT.

16. A communication device, characterized in that the device comprises a processor and a memory, the memory having stored therein a computer program, the processor executing the computer program stored in the memory to cause the device to perform the method according to any of claims 1 to 14.

17. A communication device, comprising: a processor and interface circuit;

the interface circuit is used for receiving code instructions and transmitting the code instructions to the processor;

the processor for executing the code instructions to perform the method of any one of claims 1 to 14.

18. A computer readable storage medium storing instructions which, when executed, cause a method as claimed in any one of claims 1 to 14 to be implemented.