CN114928825A

CN114928825A - Internet of vehicles HARQ information feedback method and equipment

Info

Publication number: CN114928825A
Application number: CN202210467345.2A
Authority: CN
Inventors: 沈霞; 王志勤; 杜滢; 闫志宇; 焦慧颖; 刘晓峰; 魏贵明; 徐菲
Original assignee: China Academy of Information and Communications Technology CAICT
Current assignee: China Academy of Information and Communications Technology CAICT
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2022-08-19

Abstract

The application discloses a method for feeding back HARQ information of a vehicle networking, which is used in a co-channel coexistence system comprising a first network device and a second network device and comprises the following steps: the first network equipment sends first information and/or receives second information; the second network equipment sends the second information and/or receives the first information; the first information comprises PSFCH resource configuration information in a co-channel coexistence resource pool; the second information comprises time-frequency domain resource information occupied by PSSCH in the co-channel coexistence resource pool. The application also includes a device applying the method. The method and the device solve the problem that the NR PSSCH transmits the corresponding feedback PSFCH resource and the transmission resource occupied by the LTE SL or other side links SL are collided.

Description

Internet of vehicles HARQ information feedback method and equipment

Technical Field

The application relates to the technical field of wireless communication, in particular to a method and equipment for feeding back hybrid automatic repeat request (HARQ) information of internet of vehicles.

Background

For cellular internet of vehicles technology, including the designs of the 4G LTE V2X and the 5G NR V2X, communication resources between terminals can be allocated by base stations, or two modes can be selected by autonomous listening of the terminals. The 4G LTE SL-Mode4 and the 5G NR SL-Mode2 corresponding to the side link communication are autonomously listened through the terminal based on the 4G LTE SL-Mode3 and the 5G NR SL-Mode1 corresponding to the side link communication allocated by the base station. In the 5G NR V2X design, for the coexistence relationship of 4G LTE V2X and 5G NR V2X, the 5G NR base station gNB is supported to schedule LTE V2X resources through RRC and DCI, and the 4G LTE base station eNB is also supported to schedule NR V2X resources through RRC signaling. And, if a device includes both LTE V2X and NR V2X types of side link communication (SL) modules, one of the SLs LTE V2X and NR V2X may be selected for communication according to SL communication priority and device implementation.

However, in the existing design, it is considered that 5G NR V2X and LTE V2X operate on different carriers or resource pools, and the occupied transmission resources are orthogonal to each other to avoid interference between the two systems. In subsequent technological evolution, in consideration of the limitation of frequency resources and the requirement of more frequency resources to meet the requirement of higher transmission rate of V2X, LTE V2X and NR V2X need to be deployed in the same channel for co-channel coexistence (co-channel co-existence). The coexistence between the LTE SL-Mode3 and the 5G NR SL-Mode1 can be further divided into two manners of co-channel coexistence with co-station and co-channel coexistence with different stations, as shown in fig. 1-2. In NR V2X evolution, considering the advanced deployment of LTE V2X, it is required to reduce resource conflicts between the LTE V2X scheme and the NR V2X scheme as much as possible in the design of the scheme in which NR V2X and LTE V2X coexist with the channel.

Disclosure of Invention

The application provides a method and equipment for feeding back HARQ information of a vehicle networking system, and aims to solve the problem that transmission resources occupied by an NR PSSCH (serving as a feedback PSFCH) resource and an LTE SL (other NR base station scheduling SL and other terminals SL) collide when the NR PSSCH transmits a corresponding feedback PSFCH resource.

In a first aspect, an embodiment of the present application provides a HARQ information feedback method for a vehicle networking, which is used in a system where SL co-channels configured by a first network device and a second network device coexist, and includes the following steps:

determining a co-channel coexistence resource pool for SL transmission;

the first network equipment sends the first information and/or the first network equipment receives the second information;

the first information comprises PSFCH resource configuration information in a co-channel coexistence resource pool;

the second information comprises time-frequency domain resource information occupied by PSSCH in a co-channel coexistence resource pool.

Preferably, the first network device sends a first signaling, where the first signaling is used to indicate a location of a PSFCH resource corresponding to a scheduled PSSCH resource. The resource location information at least comprises one of the following information: resource configuration indexes corresponding to the PSFCH resources, time slots where the PSFCH resources are located, and frequency domain RB positions of the PSFCH resources.

Preferably, the first network device sends a second signaling, where the second signaling is used to update the PSFCH resource configuration, so that the resource configured as the PSFCH in at least one timeslot is located at a different position from the resource previously configured as the PSFCH.

Preferably, the first network device sends a third signaling, where the third signaling is used to indicate availability of configuring NR SL resources, and includes at least one of the following information: NR psch resource availability, NR PSFCH resource availability. The configured NR SL resource indicated by the third signaling corresponds to a resource pool based on a base station allocation mode and/or a resource pool based on a terminal self-sustained listening mode.

Further preferably, the first network device configures multiple sets of PSFCH resources on the cochannel coexistence resource pool, and each set of PSFCH resource configuration parameter includes a PSFCH resource configuration period and/or a frequency domain resource block position.

Further preferably, the PSFCH resource for PSSCH transmission in the cochannel coexistence resource pool is configured on a non-cochannel coexistence resource pool.

Further preferably, the PSFCH resource configuration on the non-co-channel coexistence resource pool and the corresponding relationship of the co-channel coexistence resource pool are configured by the first network device.

Further preferably, multiple sets of PSFCH resources are configured in the non-co-channel coexistence resource pool, wherein at least one set of PSFCH resources is used for HARQ feedback of PSSCH transmission in the co-channel coexistence resource pool.

In a second aspect, an embodiment of the present application provides a HARQ information feedback method for a vehicle networking, which is used in a system where a first network device and a second network device configure SL co-channel coexistence, and includes the following steps:

the second network equipment receives the first information and/or sends second information;

Preferably, when the second network device schedules the side link communication resource, the second network device avoids the collision with the PSFCH resource in the co-channel coexistence resource pool in the first information.

Preferably, the second network device sends a fourth signaling, where the fourth signaling is used to indicate the availability of the time-frequency domain resources in the co-channel coexistence resource pool, i.e. whether to conflict with the PSFCH resources in the co-channel coexistence resource pool in the first information.

In a third aspect, the present application further provides a HARQ information feedback method for a vehicle networking system, where the HARQ information feedback method is used in a system where SL co-channels configured by a first network device and a second network device coexist, and the method includes the following steps:

the method comprises the steps that terminal equipment receives a first signaling, wherein the first signaling is used for indicating a PSFCH resource position corresponding to a scheduling PSSCH resource; and/or the terminal equipment forwards the information of the PSFCH resource position through SCI or PSSCH MAC CE.

In a fourth aspect, the present application further provides a HARQ information feedback method for a vehicle networking, which is used in a system where SL co-channels configured by a first network device and a second network device coexist, and includes the following steps:

the terminal equipment receives a second signaling, wherein the second signaling is used for updating the PSFCH resource configuration, so that the position of the resource configured as the PSFCH in at least one time slot is different from the position of the resource previously configured as the PSFCH; and/or the terminal equipment forwards the information for updating the PSFCH resource configuration through SCI or PSSCH MAC CE.

In a fifth aspect, an embodiment of the present application further provides a HARQ information feedback method for a vehicle networking, which is used in a system where SL co-channels configured by a first network device and a second network device coexist, and includes the following steps:

the terminal equipment receives a third signaling, wherein the third signaling is used for indicating the availability of SL resource configuration, namely whether the SL resource configuration conflicts with the time-frequency domain resource occupied by the PSSCH in the second information; and/or the terminal equipment forwards the information of the availability through SCI or PSSCH MAC CE.

In a sixth aspect, an embodiment of the present application further provides a HARQ information feedback method for a vehicle networking system, where the HARQ information feedback method is used in a system where SL co-channels configured by a first network device and a second network device coexist, and the method includes the following steps:

the terminal equipment receives a fourth signaling, wherein the fourth signaling is used for indicating the availability of the time-frequency domain resources in the co-channel coexistence resource pool, namely whether the availability conflicts with the PSFCH resources in the co-channel coexistence resource pool or not; and/or the terminal equipment forwards the availability information through SCI or PSSCH MAC CE.

In a seventh aspect, the present application further provides a network device, configured to implement the method in any one of the first to sixth aspects of the present application, where at least one module in the network device is configured to implement at least one of the following functions: sending the first information; receiving the second information; sending the first signaling; sending the second signaling; and sending the third signaling.

In an eighth aspect, the present application further provides a network device, configured to implement the method of any one of the first to sixth aspects of the present application, where at least one module in the network device is configured to implement at least one of the following functions: receiving the first information; sending the second information; and transmitting the fourth signaling.

In a ninth aspect, the present application provides a terminal device, configured to implement the method of any one of the first to sixth aspects of the present application, where at least one module in the terminal device is configured to implement at least one of the following functions: receiving the first signaling; forwarding information of the location of the PSFCH resource through SCI or PSSCH MAC CE; receiving the second signaling; forwarding the information for updating the PSFCH resource configuration through SCI or PSSCH MAC CE; receiving the third signaling; forwarding information of availability of said configured NR SL resource through SCI or PSSCH MAC CE; receiving the fourth signaling; forwarding information of availability of time frequency domain resources in the co-channel coexistence resource pool through SCI or PSSCH MAC CE.

In a tenth aspect, an embodiment of the present application further provides a communication device, including: the present invention relates to a computer program product, and a computer program stored on a memory and executable on a processor, wherein the computer program product implements the steps of the method according to any one of the first to sixth aspects of the present application when executed by the processor.

In an eleventh aspect, the present application further provides a computer-readable medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the method according to any one of the first to sixth aspects.

In a twelfth aspect, an embodiment of the present application further provides a mobile communication system, including at least 1 network device according to the seventh aspect of the present application and at least 1 network device according to the eighth aspect of the present application.

Further, the mobile communication system further includes at least 1 terminal device according to the ninth aspect of the present application.

The embodiment of the application adopts at least one technical scheme which can achieve the following beneficial effects:

the problem of PSFCH resource collision configured by LTE SL and NR SL under co-channel coexistence can be effectively avoided, flexible HARQ feedback of NR SL under co-channel coexistence is supported, and PSSCH transmission delay and HARQ feedback delay caused by the resource collision problem are reduced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a diagram of LTE SL and NR SL co-site co-channel coexistence;

FIG. 2 is a diagram of LTE SL and NR SL co-channel coexistence;

FIG. 3 is a diagram illustrating PSSCH and PSFCH resource distribution and collision;

fig. 4 is a diagram illustrating the location of PSFCH resources indicated by the first signaling;

fig. 5 is a diagram illustrating a PSFCH resource configuration change indicated by the second signaling;

fig. 6 is a diagram illustrating a PSFCH configuration correspondence between a co-channel resource pool and a non-co-channel resource pool;

FIG. 7 is a schematic diagram of information interaction between a first network device and a second network device;

FIG. 8 is a diagram of an embodiment of a network device;

FIG. 9 is a schematic diagram of an embodiment of a terminal device;

fig. 10 is a schematic structural diagram of a network device according to another embodiment of the present invention;

fig. 11 is a block diagram of a terminal device of another embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only a few embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.

Fig. 1 is a diagram of co-channel coexistence of LTE SL and NR SL co-sited.

The LTE SL communication resources and the NR SL communication resources are simultaneously scheduled by one base station, and the PSSCH of the LTE SL and the PSSCH of the NR SL use one time-frequency domain resource pool, namely a co-channel shared resource pool.

Fig. 2 is a diagram illustrating co-channel coexistence of LTE SL and NR SL inter-stations.

The PSSCH of LTE SL and the PSSCH of NR SL use one time-frequency domain resource pool, i.e. a co-channel shared resource pool, by scheduling LTE SL and NR SL communication resources through different base stations.

Fig. 3 is a diagram illustrating PSSCH and PSFCH resource distribution and collision.

In this application, the SL resource includes the resources for pschs and PSFCHs transmissions. For co-channel co-existence in the same station, the base station may perform centralized resource management on LTE SL and NR SL, and the LTE SL Mode3 and NR SL Mode1 may transmit using mutually orthogonal resources. For co-channel coexistence of different stations, cooperative resource management between base stations is required to avoid resource collision between LTE SL Mode3 and NR SL Mode 1. However, the LTE SL does not support SL HARQ feedback, and its frame structure design has a subframe containing only PSSCH and DMRS transmission, and no symbol is configured for PSFCH to support HARQ information transmission. Therefore, no matter co-station and co-channel coexistence or co-channel coexistence of different stations, LTE SL PSSCH transmission resources may occupy the PSFCH resource for NR SL PSSCH transmission of corresponding HARQ feedback. For example, assuming that according to the NR channel configuration, the PSFCH configuration cycle is 4 slots, and the minimum time interval between the PSSCH and its corresponding PSFCH slot is 2 slots, the corresponding relationship between each 4 PSSCH transmission slots and the slot of the PSFCH resource is as shown in the following figure, the PSFCH resource is configured in slot 7 when the system frame SFN is 0, and the PSFCH resource in slot 7 corresponds to the PSSCH transmission HARQ information feedback in slot 1, slot 2, slot 3, and slot 4. When system frame SFN ═ 0 slot 7 is occupied by LTE SL transmission, NR cannot support pscch transmission HARQ information feedback on slot 1, slot 2, slot 3 and slot 4

Therefore, in order to support the HARQ information feedback of the NR SL, (1) a pscch slot corresponding to a subsequent PSFCH slot not occupied by the LTE SL needs to be selected, for example, a PSSCH transmission slot corresponding to a PSFCH resource configured in slot 1 of system frame SFN 1 in fig. 3, that is, slot 5, slot 6, slot 7, and slot 8 of system frame SFN 0; or (2) an enhanced NR SL HARQ feedback design.

The NR pscch transmission delay is increased in the selection scheme (1), and the collision problem between the PSFCH resource and the LTE SL resource is not solved in the corresponding enhancement scheme in the current selection scheme (2), which requires a corresponding solution design.

To illustrate the method of the present application, consider first a first network device.

In a first aspect, an embodiment of the present application provides a method for feeding back HARQ information of a vehicle networking system, which is used in a co-channel coexistence system of SL communication resources scheduled by a first network device and a second network device, and includes the following steps:

step 101, determining a SL transmission co-channel coexistence resource pool, a first network determining PSFCH resource configuration information on the co-channel coexistence resource pool, and a second network device determining PSSCH transmission resource occupancy information on the coexistence resource pool.

The mode for determining the SL transmission co-channel coexistence resource pool in the first network device and the second network device may be determined by a protocol agreement or a mode of core network high-level configuration. For example, 2 SL resource pools are configured in the first network device, where the first resource pool is used as a co-channel coexistence resource pool for scheduling SL with the second network device, and the second resource pool is not used as a co-channel coexistence resource pool (non-co-channel coexistence resource pool) for scheduling SL with the second network device. That is, when the first network device and the second network device configure the SL resource pool, which resource pool is specifically determined as the cochannel coexisting resource pool by a protocol agreement or a manner that the core network indicates the network device through a high-layer signaling.

And the co-channel coexistence resource pool and the non-co-channel coexistence resource pool occupy different time-frequency resources.

The PSFCH is a channel for bearing HARQ ACK/NACK information corresponding to PSSCH transmission, and the PSSCH is a data channel for inter-terminal communication.

When the first network device configures the PSFCH resources on the coexistence channel resource pool, at least one or more sets of PSFCH resources are configured, and each set of PSFCH resource configuration parameter includes a PSFCH resource configuration period and/or a frequency domain resource block position. For each set of PSFCH resource configuration, the PSSCH transmits the corresponding relation with the PSFCH resources correspondingly bearing the HARQ ACK information, and the corresponding relation is the same as that of the existing protocol.

When the first network device configures the PSFCH resources on the non-coexisting channel resource pool, at least one or more sets of PSFCH resources are configured, and each set of PSFCH resource configuration parameters includes a PSFCH resource configuration period and/or a frequency domain resource block position. For each set of PSFCH resource configuration, the PSSCH transmits the corresponding relation with the PSFCH resources correspondingly bearing the HARQ ACK information, and the corresponding relation is the same as that of the existing protocol.

Further optionally, when the terminal determines the location of the PSFCH resource corresponding to the NR PSSCH in one SL resource pool, it needs to know which set of PSFCH resource configuration on the resource pool is adopted, and the location is determined by (1) specifically indicating which set of PSFCH resource configuration by the first network device, or (2) satisfying which set of PSFCH resource configuration corresponding to the first PSFCH resource that is required by the minimum interval between the PSSCH and the corresponding PSFCH resource (this application is denoted by a PSFCH resource configuration index). For example, the first network device configures 2 sets of PSFCH resource configurations on a resource pool coexisting with LTE SL, and when the first network device schedules NR pscch for a SL transmitting terminal, the first network device indicates to adopt the 1 st set of PSFCH resource configurations for the transmitting terminal to determine the PSFCH resource corresponding to the pscch. The SL transmitting terminal further indicates to the receiving terminal that the PSFCH resource configuration of set 1 is used for the receiving terminal to determine the PSFCH resource corresponding to the PSSCH. Or, when the minimum interval requirement between the transmitted psch and the corresponding PSFCH resource is satisfied as the PSFCH resource configured by the 1 st set of PSFCH resources, the transmitting terminal and the receiving terminal determine the HARQ feedback PSFCH resource corresponding to the psch by using the 1 st set of PSFCH configuration.

It should be noted that, if the first network device configures multiple sets of PSFCH resources on one SL resource pool. In the terminal self-owned resource selection mode, the SL sending terminal can determine which set of PSFCH resources to select by itself, and the selection mode includes: (1) the transmitting terminal indicates to the receiving terminal which set of resource configurations to employ, or (2) satisfies the set of PSFCH resource configurations corresponding to the first PSFCH resource corresponding to the PSSCH and corresponding PSFCH resource minimum interval requirement.

Further preferably, the PSFCH resource used for transmitting the PSSCH in the cochannel coexistence resource pool is configured on a non-cochannel coexistence resource pool, and at this time, the PSFCH resource is not configured on the cochannel coexistence resource pool. For example, HARQ feedback PSFCH resources for NR psch transmissions on a resource pool where NR SL network devices co-exist with LTE SL are configured on a resource pool where LTE SL non-co-exist.

Further preferably, the corresponding relationship between the non-cochannel coexistence resource pool and the cochannel coexistence resource pool is configured by the first network device.

102, a first network device sends first information and/or receives second information; the first information comprises PSFCH resource configuration information in a co-channel coexistence resource pool; the second information comprises time-frequency domain resource information occupied by PSSCH in a co-channel coexistence resource pool.

For example, the first information between base stations, which is sent by the NR network device to the LTE network device, includes PSFCH resource configuration information on a co-channel coexistence resource pool, and a time-frequency resource corresponding to the NR PSFCH resource is avoided from being used when the LTE network device schedules an LTE SL resource. The LTE network device sends the second information to the NR network device, where the second information includes LTE SL resource occupancy information.

The first network device and the second network device determine a SL co-channel coexistence resource pool, and the first network device sends first information to the second network device, and/or the second network device sends second information to the first network device.

The first information includes PSFCH resource configuration information of the first network device on a SL co-channel coexistence resource pool configured with the second network device. And/or, based on the SL configuration of the second network equipment, avoiding adopting the time-frequency resource corresponding to the PSFCH resource configured by the first network equipment when the SL resource is selected by the terminal.

The second information includes time-frequency resource information occupied by the second network device in the SL co-channel coexistence resource pool configured with the first network device.

It should be noted that the first network device and the second network device in the present invention may represent different base station devices, for example, two NR base stations, or the first network device is an NR base station and the second network device is an LTE base station, or may represent different types of system coexistence under the same base station device, for example, the same base station in fig. 1 may support SL scheduling under LTE and NR types, and at this time, the first information and the second information may be information exchanged between an NR function module and an LTE function module inside the base station.

In this technical feature, the PSFCH resource configuration information on the cochannel coexistence supporting resource pool in the first information includes a frequency resource block location occupied by the PSFCH, a configuration period, and the like.

The first information further includes a subcarrier spacing supporting scheduling of SLs by the first network device on the co-channel coexistence resource pool. It is assumed that when the subcarrier spacing of the first network device SL is 15KHz, the PSFCH period is configured as 2 slots, corresponding to the

PSFCH slot IDs

1, 3, 5, 7, and 9 configured in one system frame. If the second network device is an LTE base station, it indicates that the SL available resources of the second network device in the coexistence resource pool are subchannels where the PSFCH resources are not configured, that is, the second network device schedules the SL available resources to be all subchannels in slot IDs of 0, 2, 4, 6, and 8 and subchannels on slot IDs of 1, 3, 5, 7, and 9 that are not occupied by NR PSFCH.

If the second network device is an NR base station, the second network device schedules SL available resources to all subchannels with slot IDs of 0, 2, 4, 6, 8 and subchannels and transmission symbols with slot IDs of 1, 3, 5, 7, 9 that are not occupied by NR PSFCH. The PSFCH resources configured by the second network device may occupy the same time-frequency resources as the PSFCH configured by the first network device except for the time-frequency resources not occupied by the PSFCH configured by the first network device, but include PSFCH code domain resources orthogonal to the PSFCH resource generation sequence configured by the first network device.

Step 103, the first network device sends at least one of a first signaling, a second signaling, and a third signaling.

Preferably, when a first network device schedules the NR SL, the first network device sends a first signaling, where the first signaling is used to indicate a PSFCH resource location corresponding to the scheduled PSSCH, so as to avoid a time-frequency domain resource collision between the PSFCH resource location and the PSSCH occupied in the second information. It should be noted that, the HARQ feedback PSFCH resource position corresponding to the PSSCH transmission resource is indicated by a first signaling, where the first signaling is a terminal device specific signaling and may be indicated in DCI 3_0 or MA CE; the sending terminal device further indicates the indicated PSFCH resource fed back by the HARQ to the receiving terminal device through the SCI. If the first network device configures multiple sets of PSFCH resource configurations in the co-channel coexistence resource pool, or the PSSCH transmission on the co-channel coexistence resource pool corresponds to multiple sets of PSFCH resource configurations in the non-co-channel coexistence resource pool, the first signaling further indicates which set of PSFCH resource configuration to use.

Preferably, the first network device updates NR SL PSFCH the configuration resources via the second signaling. And the first network equipment sends a second signaling, wherein the second signaling is used for updating the PSFCH resource configuration, so that the resource configured as the PSFCH in at least one time slot is different from the resource configured as the PSFCH in advance. It should be noted that NR SL PSFCH resources are configured by updating a second signaling, where the second signaling is multicast DCI or cell common RRC signaling, and the location of the PSFCH resource on the resource pool that indicates co-channel coexistence with LTE SL under the NR-configured SL BWP is updated. The update indicates the PSFCH resource configuration on a particular time slot.

Preferably, the first network device indicates the availability of the configured NR SL resource by a third signaling. The first network device sends third signaling indicating the availability of resources configured as NR SL resources, i.e. whether it conflicts with the time frequency domain resources occupied by the PSSCH in the second information. The NR SL resources are NR PSSCH resources and/or NR PSFCH resources. It should be noted that the availability of the NR SL resource is indicated by the third signaling. The third signaling is multicast DCI or cell common RRC signaling indicating availability of the configured NR SL resource (indicating SL resource availability on a specific slot). And if the NR SL resource corresponding to the indication availability is the PSFCH resource, considering a PSFCH and corresponding PSSCH transmission resource remapping method when the PRB number corresponding to the available PSFCH resource cannot be divided by the product of the PSFCH configuration period and the NR PSSCH subchannel number.

Fig. 4 is a diagram illustrating the location of PSFCH resources indicated by the first signaling.

When the first network equipment schedules the NR SL, the PSFCH resource position fed back by the HARQ information corresponding to the NR PSSCH resource is indicated to the SL transmitting terminal through a first signaling.

In this technical feature, it is assumed that the base station schedules the NR pschs, and when the first network device determines that the PSFCH resource corresponding to the HARQ feedback of the scheduled NR pschs is occupied by the second network device SL according to the second information, to avoid collision, the scheduled NR pschs indicate the corresponding PSFCH resource locations through the first signaling, where the resource location information at least includes one of the following information: the PSFCH resource configuration index, the time slot where the PSFCH resource is located, and the frequency domain RB position of the PSFCH resource. The PSFCH resource configuration index is used for determining which set of PSFCH resource configuration is adopted under the condition that a plurality of sets of PSFCH resource configurations are configured on the co-channel coexistence resource pool or a plurality of sets of PSFCH resource configurations corresponding to PSSCH transmission on the co-channel coexistence resource pool and on the non-co-channel coexistence resource pool.

For example, as shown in fig. 4, it is assumed that the first network device schedules the NR psch 1 of slot n +1, and the HARQ feedback PSFCH resource corresponding to the NR psch 1 is located in RB1 of slot n +4 according to the existing protocol standard, but has a channel coexistence collision with LTE SL, and the first network device indicates, through the first signaling, that the HARQ feedback PSFCH resource corresponding to the psch 1 is RB3 of slot n + 1.

Further optionally, if only the PSFCH frequency domain RB position is indicated in the first signaling, the PSFCH time domain position is the same as the PSFCH slot position corresponding to the PSSCH determined according to the existing protocol. If only the PSFCH time slot position is indicated in the first signaling, the PSFCH frequency domain position is the same as the PSFCH time slot position corresponding to the PSSCH determined according to the existing protocol.

Further optionally, if the first signaling does not indicate which set of resource configuration corresponding to the PSFCH resource, and when multiple sets of PSFCH resources are configured in the cochannel coexistence resource pool, or when the PSSCH in the cochannel coexistence resource pool transmits multiple sets of PSFCH resources corresponding to the non-cochannel coexistence resource pool, the terminal determines which set of PSFCH resource configuration to use, the terminal determines the set of PSFCH resource configuration by (1) a default set of PSFCH resource configuration, or (2) the set of PSFCH resource configuration corresponding to the first PSFCH resource that meets the minimum interval requirement between the PSSCH and the corresponding PSFCH resource.

Further optionally, after the first network device indicates the location of the PSFCH resource corresponding to the PSSCH to the sending terminal through the first signaling, the SL sending terminal further sends the location of the PSFCH resource to the receiving terminal through SCI or PSSCH MAC CE.

It should be noted that, for the SL sending terminal, if the first signaling sent by the first network device or the assistance information sent by other terminals learns that the selected PSSCH is occupied according to the existing corresponding PSFCH resource, the PSFCH resource corresponding to the PSSCH may also be indicated through SCI or PSSCH MAC CE.

Further optionally, the first signaling indicates a location of a PSFCH resource corresponding to the PSSCH through a reserved bit of DCI format 3_0 or a MAC CE.

Further optionally, when the first network device indicates the repeated transmission of the multiple NR pschs to the SL transmission terminal, the first network device further indicates HARQ feedback PSFCH resources corresponding to one or more pschs of the multiple repeatedly transmitted pschs. If not, the scenario is repeated for multiple NR pschs, and if the location of the PSFCH resource is indicated, the default corresponds to the last psch transmission.

Further optionally, when the SL transmitting terminal indicates the multiple NR pschs for repeated transmission to the receiving terminal, the SL transmitting terminal further indicates HARQ feedback PSFCH resources corresponding to one or more pschs of the multiple repeatedly transmitted pschs. If not, repeat transmission scenarios for multiple NR pschs, if a PSFCH resource location is indicated, default to the last psch transmission.

Fig. 5 is a diagram illustrating a PSFCH resource configuration change indicated by the second signaling.

The first network device updates NR SL PSFCH the resource configuration through the second signaling

In this feature, the first network device determines the resource occupation situation of the second network device SL in the coexistence resource pool according to the second information, and further may dynamically update the configuration NR SL PSFCH resource through the second signaling, for example, change NR SL PSFCH resource configuration period and frequency domain occupied PRB position, so as to avoid resource collision with the second network device (e.g. LTE) SL.

The second signaling is further designed to be a multicast DCI or a cell common RRC signaling, and is broadcasted to terminals supporting NR SL in the coverage area of the NR base station. The NR SL terminals may broadcast this information to the surrounding terminals over the SL.

Further optionally, the second signaling indicates a PSFCH resource configuration on a particular timeslot. The valid time and period of the PSFCH resource configuration on the timeslot may be further indicated, and the original PSFCH resource configuration is recovered after the valid time is exceeded. For example, as shown in the following figure, it is assumed that the configured PSFCH cycle is 3 timeslots, and the timeslots where the PSFCH resources are configured are n +1, n +4, n +7, and n +10, which indicate to change the PSFCH resource configuration corresponding to timeslot n +4, where the change cycle is 6 timeslots, and the corresponding changed PSFCH resource configuration is as shown in fig. 5.

The first network device indicates availability of the configured NR SL resource through the third signaling.

In this feature, the first network device indicates to the NR SL terminal, through the third signaling, availability of the configured NR SL resource, which is represented by a SL (pscch/PSFCH) transmission time-frequency domain resource that cannot be used or a SL (pscch/pscch) time-frequency domain resource that can be used, in accordance with the second information. The third signaling indication at least includes one of the following information: NR PSSCH resource availability, NR PSFCH resource availability.

Further optionally, the first network device and the second network device use different SL timeslots or frequency domain resources occupied in the coexistence resource pool, the first network device indicates, to the terminal, a timeslot or frequency domain resource that can be used for NR SL transmission through a third signaling, and the PSFCH corresponding to the NR psch is also on an available NR SL transmission timeslot or frequency domain resource. The time slot or frequency domain resource indicated by the third signaling and available for NR SL transmission corresponds to a resource pool of NR SL based on a base station allocation mode, and/or based on a resource pool of a terminal self-sustained listening mode.

The third signaling is multicast DCI or cell common RRC signaling, and indicates the time-frequency domain resources available for NR SL, or may indicate the availability of SL frequency domain resources on a specific timeslot.

The third signaling may also be a signaling dedicated to the terminal device, and indicates the availability of the PSFCH frequency domain resources on the PSFCH timeslot corresponding to the NR PSSCH transmission. Further optionally, when the first network device indicates that the multiple NR pschs are repeatedly transmitted, HARQ feedback PSFCH resource availability corresponding to one or more pschs of the multiple repeatedly transmitted pschs is further indicated. If not, repeat transmission scenarios for multiple NR pschs, and if PSFCH resource availability is indicated, default to the last psch transmission.

Further alternatively, the transmitting terminal may transmit the availability of the SL resource indicated by the third signaling to the receiving terminal through the SL link. Wherein if the indicated SL resource availability includes the availability of the PSFCH resource, if the PSFCH resource corresponding to the PSSCH selected by the transmitting terminal is not available, it indicates that the receiving terminal may not perform the corresponding HARQ feedback. Or if the PSFCH resource corresponding to the PSSCH selected by the transmitting terminal is unavailable, the receiving terminal may be simultaneously instructed not to perform HARQ feedback for the PSSCH transmission when indicating the PSSCH transmission to the receiving terminal.

Further optionally, after the transmitting terminal and the receiving terminal learn the PSFCH resource availability corresponding to the PSSCH transmission, the method for determining the PSFCH resource corresponding to the PSSCH transmission includes:

assuming that the PSFCH configuration period is N, the number of PSSCH subchannels in a time slot is M, when the number of PRBs corresponding to available PSFCH resources is changed from Q configured by the system to Z (Z is an integer smaller than Q), the number of PSFCH cyclic shift pairs is K, the number of PSSCH transmission in a subchannel is L, and the number of PSSCH occupied subchannels in a subchannel is L, determining that the PSFCH resource ID is (S _ ID + M _ ID) mod R, wherein

Wherein H is 1 or L according to high-level cooperation.

Fig. 6 is a schematic diagram of a corresponding relationship between the configurations of the co-channel resource pool and the non-co-channel resource pool PSFCH.

In step 101, the first network device configures HARQ feedback PSFCH resources for NR PSSCH transmission on a resource pool co-existing with a second network device SL on a resource pool non-co-existing with the second network device SL

In this feature, the system corresponding to the first network device configures NR SL PSSCH a correspondence between a transmission resource pool and a resource pool where a corresponding HARQ feedback PSFCH resource is located, for example, multiple sets of PSFCH resources are configured in one resource pool, and one set of PSFCH resources is selected as a HARQ feedback resource corresponding to the transmission of the PSSCH in another resource pool. As shown in fig. 6, the PSSCH resource in resource pool 2 corresponds to the PSFCH resource for HARQ feedback and is configured in resource pool 1. The main difference between the PSFCH resource ID where the PSSCH resource is located and the prior art is that the PSFCH and the corresponding PSSCH are transmitted in different resource pools, so that the problem of collision between the PSFCH corresponding to the NR PSSCH and the LTE SL transmission on the NR PSSCH and LTE SL coexisting resource pool is solved.

To further illustrate the method of the present application, consider a second network device, which operates as follows. The embodiment of the application provides a hybrid automatic repeat request (HARQ) information feedback method for a vehicle networking, which is used in a system comprising a first network device and a second network device which configure a shared channel (SL) to coexist, and comprises the following steps:

step 201, determining the shared resource pool of the same channel (same step 101)

Step 202, the second network device receives the first information and/or the second network device sends second information;

the second information comprises time-frequency domain resource information occupied by PSSCH in the co-channel coexistence resource pool.

Preferably, when the second network device schedules the sidelink communication resource, the collision with the PSFCH resource in the co-channel coexistence resource pool is avoided.

Step 203, the second network device sends a fourth signaling, where the fourth signaling is used to indicate availability of the time-frequency domain resource in the cochannel coexistence resource pool, that is, whether the fourth signaling conflicts with the PSFCH resource in the cochannel coexistence resource pool in the first information.

In this embodiment, the second network device avoids adopting the time-frequency resource corresponding to the PSFCH resource of the first network device when scheduling the SL resource, and/or avoids adopting the time-frequency resource corresponding to the PSFCH resource of the first network device when the terminal self-owned selects the SL resource based on the configuration of the second network device SL.

Fig. 7 schematically shows a communication relationship between the first network device and the second network device according to the present application, including step 102 and step 202.

To further illustrate the method of the present application, consider a terminal device, which operates as follows. The application also provides a method for feeding back the HARQ information of the internet of vehicles, which is used in a co-channel coexistence system including a first network device and a second network device, and includes the following steps 301A to 302A:

step 301A, a terminal device receives a first signaling, where the first signaling is used to indicate a PSFCH resource location corresponding to a scheduled PSSCH resource, so as to avoid a time-frequency domain resource conflict between the PSFCH resource location and the PSSCH occupied by PSSCH transmission in a second message;

step 302A, the terminal device forwards the information of the location of the PSFCH resource through SCI or PSSCH MAC CE.

Alternatively, the method includes the following steps 301B to 302B:

step 301B, the terminal device receives a second signaling, where the second signaling is used to update the PSFCH resource configuration, so that the resource configured as the PSFCH in at least one timeslot is different from the resource configured as the PSFCH in advance;

step 302B, the terminal device forwards the information for updating the PSFCH resource configuration through SCI or PSSCH MAC CE.

Alternatively, the method includes the following steps 301C to 302C:

step 301C, the terminal device receives a third signaling, where the third signaling is used to indicate availability of configuring NR SL resources, that is, whether the NR SL resources conflict with time-frequency domain resources occupied by the PSSCH in the second information;

step 302C, the terminal device forwards the information of availability through SCI or PSSCH MAC CE.

The transmitting terminal may transmit the availability of the PSFCH resource indicated by the third signaling to the receiving terminal over the SL link, or the transmitting terminal may transmit the availability of the PSSCH resource indicated by the third signaling to the receiving terminal over the SL link.

Alternatively, the method includes the following steps 301D to 302D:

step 301D, the terminal device receives a fourth signaling, where the fourth signaling is used to indicate availability of time-frequency domain resources in the cochannel coexistence resource pool, that is, whether to conflict with PSFCH resources in the cochannel coexistence resource pool in the first information;

step 302D, the terminal device forwards the information of availability through SCI or PSSCH MAC CE.

Fig. 8 is a schematic diagram of an embodiment of a network device.

An embodiment of the present application further provides a network device, where, using the method in any embodiment of the present application, the network device serves as a first network device, and at least one module of the network device is configured to implement at least one of the following functions: sending the first information; receiving the second information; and sending the first signaling, the second signaling and the third signaling.

Or, the network device is used as a second network device, and at least one module thereof is used for realizing at least one function of the following functions: receiving the first information; sending the second information; and transmitting the fourth signaling.

In order to implement the foregoing technical solution, the network device 400 provided in this application includes a network sending module 401, a network determining module 402, and a network receiving module 403.

The network sending module is configured to send at least one of the first signaling, the second signaling, the third signaling, and the fourth signaling; when the first network equipment is formed, the first network equipment is also used for sending the first information; and the second network equipment is also used for sending the second information when being formed.

The network determining module is configured to determine the co-channel shared resource pool; the PSFCH resource conflict detection module is further used for determining a conflict relation between the PSFCH resource and the PSSCH according to the received first information or the received second information, and further determining the availability of the PSFCH resource according to the PSSCH occupied resource in the second information; or, determining the availability of the PSSCH time-frequency domain resource according to the PSFCH resource configuration information in the first information.

The network receiving module is used for receiving second information when the first network equipment is formed; the second network device is configured to receive the first information.

The specific method for implementing the functions of the network sending module, the network determining module, and the network receiving module is described in the embodiments of the methods of the present application, and is not described herein again.

Fig. 9 is a schematic diagram of an embodiment of a terminal device.

The present application further provides a terminal device, and using the method of any embodiment of the present application, at least one module in the terminal device is configured to perform at least one of the following functions: receiving the first signaling; forwarding information of the location of the PSFCH resource through SCI or PSSCH MAC CE; receiving the second signaling; forwarding the information for updating the PSFCH resource configuration through SCI or PSSCH MAC CE; receiving the third signaling; forwarding the information configured as NG SL resource availability through SCI or PSSCH MAC CE; receiving the fourth signaling; forwarding information of availability of time frequency domain resources in the co-channel coexistence resource pool through SCI or PSSCH MAC CE.

In order to implement the foregoing technical solution, the terminal device 500 provided in the present application includes a terminal sending module 501, a terminal determining module 502, and a terminal receiving module 503.

The terminal receiving module is configured to receive at least one of the first signaling, the second signaling, the third signaling, and the fourth signaling.

And the terminal determining module is used for determining the resource for sending the PSSCH and/or the PSFCH according to at least one information of the first signaling, the second signaling, the third signaling and the fourth signaling.

And the terminal sending module is configured to send at least one of information of the location of the PSFCH resource, information of updating PSFCH resource configuration, and the availability information.

The specific method for implementing the functions of the terminal sending module, the terminal determining module and the terminal receiving module is as described in the method embodiments of the present application, and is not described herein again.

The terminal equipment can be mobile terminal equipment.

Fig. 10 is a schematic structural diagram of a network device according to another embodiment of the present invention. As shown, network device 600 includes a processor 601, a wireless interface 602, and a memory 603. Wherein the wireless interface may be a plurality of components, i.e. including a transmitter and a receiver, providing means for communicating with various other apparatus over a transmission medium. The wireless interface implements a communication function with the terminal device, and processes wireless signals through the receiving and transmitting devices, and data carried by the signals are communicated with the memory or the processor through the internal bus structure. The memory 603 contains a computer program that executes any of the embodiments of the present application, running or changed on the processor 601. When the memory, processor, wireless interface circuit are connected through a bus system. The bus system includes a data bus, a power bus, a control bus, and a status signal bus, which are not described in detail herein.

Fig. 11 is a block diagram of a terminal device of another embodiment of the present invention. The terminal device 700 comprises at least one processor 701, a memory 702, a user interface 703 and at least one network interface 704. The various components in the terminal device 700 are coupled together by a bus system. A bus system is used to enable connection communication between these components. The bus system includes a data bus, a power bus, a control bus, and a status signal bus.

The user interface 703 may include a display, a keyboard, or a pointing device, such as a mouse, a trackball, a touch pad, or a touch screen.

The memory 702 stores executable modules or data structures. The memory may have stored therein an operating system and an application program. The operating system includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, and is used for implementing various basic services and processing hardware-based tasks. The application programs include various application programs such as a media player, a browser, and the like for implementing various application services.

In the embodiment of the present invention, the memory 702 contains a computer program for executing any one of the embodiments of the present application, and the computer program runs or changes on the processor 701.

The memory 702 contains a computer readable storage medium, and the processor 701 reads the information in the memory 702 and combines the hardware to complete the steps of the above-described method. In particular, the computer-readable storage medium has stored thereon a computer program which, when being executed by the processor 701, carries out the steps of the method embodiments as described above with reference to any of the embodiments.

The processor 701 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the method of the present application may be implemented by hardware integrated logic circuits in the processor 701 or by instructions in the form of software. The processor 701 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, an off-the-shelf programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. In a typical configuration, the device of the present application includes one or more processors (CPUs), an input/output user interface, a network interface, and a memory.

Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application therefore also proposes a computer-readable medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of the embodiments of the present application. For example, the

memory

603, 702 of the present invention may include volatile memory in a computer readable medium, Random Access Memory (RAM) and/or nonvolatile memory such as Read Only Memory (ROM) or flash memory (flash RAM).

Based on the embodiments of fig. 8 to 11, the present application further provides a mobile communication system, which includes at least 1 embodiment of the first network device and at least 1 embodiment of the second network device in the present application. Further, the embodiment of at least one terminal device is also included.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.

It should be noted that the terms "first" and "second" in the present application are used to distinguish a plurality of objects having the same name, and have no other special meaning unless otherwise specified.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement or the like made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.

Claims

1. A HARQ information feedback method of a vehicle networking is used in a system with a co-channel coexistence SL configured by a first network device and a second network device, and is characterized by comprising the following steps:

determining a co-channel coexistence resource pool for SL transmission;

the first network equipment sends first information and/or receives second information;

2. The method for feeding back the HARQ information of the internet of vehicles according to claim 1, further comprising the steps of:

the first network equipment sends a first signaling, wherein the first signaling is used for indicating a PSFCH resource position corresponding to a scheduling PSSCH resource;

the resource location information at least comprises one of the following information: resource configuration indexes corresponding to the PSFCH resources, time slots where the PSFCH resources are located, and frequency domain RB positions of the PSFCH resources.

3. The method for feeding back the HARQ information of the internet of vehicles according to claim 1, further comprising the steps of:

and the first network equipment sends a second signaling, wherein the second signaling is used for updating the PSFCH resource configuration, so that the resource configured as the PSFCH in at least one time slot is different from the resource configured as the PSFCH in advance.

4. The method for feeding back the HARQ information of the internet of vehicles according to claim 1, further comprising the steps of:

the first network equipment sends a third signaling, the third signaling is used for indicating the availability of the configured NR SL resource and comprises at least one of the following information: NR PSSCH resource availability, NR PSFCH resource availability.

The configured NR SL resource indicated by the third signaling corresponds to a resource pool based on a base station allocation mode, and/or is based on a resource pool in a terminal self-sustained listening mode.

5. The Internet of vehicles HARQ information feedback method of claim 1,

and the first network equipment configures a plurality of sets of PSFCH resources on the cochannel coexisting resource pool, wherein each set of PSFCH resource configuration parameters comprises a PSFCH resource configuration period and/or a frequency domain resource block position.

6. The Internet of vehicles HARQ information feedback method of claim 1,

and the PSFCH resource used for PSSCH transmission in the co-channel coexistence resource pool is configured on a non-co-channel coexistence resource pool.

7. The Internet of vehicles HARQ information feedback method of claim 6,

the corresponding relationship between the PSFCH resource configuration on the non-co-channel coexistence resource pool and the co-channel coexistence resource pool is configured by the first network device.

8. The Internet of vehicles HARQ information feedback method of claim 8,

and configuring multiple sets of PSFCH resources in the non-co-channel coexistence resource pool, wherein at least one set of PSFCH resources is used for HARQ feedback of PSSCH transmission in the co-channel coexistence resource pool.

9. A HARQ information feedback method of a vehicle networking is used in a system comprising a first network device and a second network device which configure SL co-channel coexistence, and is characterized by comprising the following steps:

10. The car networking HARQ information feedback method of claim 9, comprising the steps of:

and when the second network equipment schedules the side link communication resource, avoiding the side link communication resource from colliding with the PSFCH resource in the cochannel coexistence resource pool in the first information.

11. The car networking HARQ information feedback method of claim 9, comprising the steps of:

the second network device sends a fourth signaling, where the fourth signaling is used to indicate availability of the time-frequency domain resource in the cochannel coexistence resource pool, that is, whether to conflict with the PSFCH resource in the cochannel coexistence resource pool.

12. A HARQ information feedback method of a vehicle networking is used in a system with coexistence of SL co-channels configured by a first network device and a second network device, and is characterized by comprising the following steps:

the terminal equipment receives a first signaling, wherein the first signaling is used for indicating a PSFCH resource position corresponding to a scheduling PSSCH resource;

and/or the presence of a gas in the atmosphere,

and the terminal equipment forwards the information of the PSFCH resource position through SCI or PSSCH MAC CE.

13. A HARQ information feedback method of a vehicle networking is used in a system with a co-channel coexistence SL configured by a first network device and a second network device, and is characterized by comprising the following steps:

the terminal equipment receives a second signaling, wherein the second signaling is used for updating the PSFCH resource configuration, so that the position of the resource configured as the PSFCH in at least one time slot is different from the position of the resource previously configured as the PSFCH;

and/or the presence of a gas in the gas,

and the terminal equipment forwards the information for updating the PSFCH resource configuration through SCI or PSSCH MAC CE.

14. A HARQ information feedback method of a vehicle networking is used in a system with a co-channel coexistence SL configured by a first network device and a second network device, and is characterized by comprising the following steps:

the terminal equipment receives a third signaling, wherein the third signaling is used for indicating the availability of SL resource configuration, namely whether the SL resource configuration conflicts with the time-frequency domain resource occupied by the PSSCH in the second information;

and/or the presence of a gas in the atmosphere,

the terminal device forwards the information of availability through SCI or PSSCH MAC CE.

15. A HARQ information feedback method of a vehicle networking is used in a system with coexistence of SL co-channels configured by a first network device and a second network device, and is characterized by comprising the following steps:

the terminal equipment receives a fourth signaling, wherein the fourth signaling is used for indicating the availability of the time-frequency domain resources in the co-channel coexistence resource pool, namely whether the availability conflicts with the PSFCH resources in the co-channel coexistence resource pool in the first information;

and/or the presence of a gas in the gas,

the terminal equipment forwards the availability information through SCI or PSSCH MAC CE.

16. A network device for implementing the method of any one of claims 1 to 15, wherein at least one module in the network device is configured to implement at least one of the following functions:

sending the first information; receiving the second information; sending a first signaling; sending a second signaling; sending a third signaling;

the first signaling is used for indicating a PSFCH resource position corresponding to the scheduling PSSCH resource;

the second signaling is used for updating the PSFCH resource configuration, so that the resource configured as the PSFCH in at least one time slot is different from the resource configured as the PSFCH in advance;

the third signaling is used to indicate the availability of configuration SL resources, i.e. whether to conflict with the time-frequency domain resources occupied by the PSSCH transmission in the second information.

17. A network device for implementing the method of any one of claims 1 to 15, wherein at least one module in the network device is configured to implement at least one of the following functions:

receiving the first information; sending the second information; sending a fourth signaling;

the fourth signaling is used to indicate the availability of the time-frequency domain resource in the co-channel coexistence resource pool, i.e. whether the resource conflicts with the PSFCH resource in the co-channel coexistence resource pool in the first information.

18. A terminal device for implementing the method according to any one of claims 1 to 15, wherein at least one module in the terminal device is configured to implement at least one of the following functions:

receiving a first signaling, wherein the first signaling is used for indicating a PSFCH resource position corresponding to a scheduling PSSCH resource;

forwarding information of the location of the PSFCH resource through SCI or PSSCH MAC CE;

receiving a second signaling, wherein the second signaling is used for updating the PSFCH resource configuration, so that the position of the resource configured as the PSFCH in at least one time slot is different from the position of the resource configured as the PSFCH in advance;

forwarding the information for updating the PSFCH resource configuration through SCI or PSSCH MAC CE;

receiving a third signaling, where the third signaling is used to indicate availability of configuration of SL resources, i.e., whether to conflict with time-frequency domain resources occupied by the PSSCH in the second information;

forwarding information of the availability of the SL resource through SCI or PSSCH MAC CE;

receiving a fourth signaling, where the fourth signaling is used to indicate availability of time-frequency domain resources in the co-channel coexistence resource pool, that is, whether to conflict with PSFCH resources in the co-channel coexistence resource pool in the first information;

the information of the availability of the time frequency domain resources is forwarded through SCI or PSSCH MAC CE.

19. A communication device, comprising: memory, processor and computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the method according to any one of claims 1 to 15.

20. A computer-readable medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 15.

21. A mobile communication system comprising at least 1 network device according to claim 16 and at least 1 network device according to claim 17.

22. The mobile communication system according to claim 21, further comprising at least 1 terminal device according to claim 18.