A method and device for HARQ information feedback in a vehicle networking

Abstract

The present application discloses a method for feedback of HARQ information in a vehicle networking system, which is used in a co-channel coexistence system including a first network device and a second network device, and includes the following steps: the first network device sends first information and / or the first network device receives second information; the second network device sends second information and / or receives first information; the first information includes PSFCH resource configuration information in a co-channel coexistence resource pool; the second information includes time-frequency domain resource information occupied by PSSCH in the co-channel coexistence resource pool. The present application further includes a device applying the method. The present application solves the problem that the transmission resources occupied by the feedback PSFCH resources corresponding to NR PSSCH transmission collide with the transmission resources occupied by LTE SL or other sidelink SLs.

Description

Technical Field

[0001] The present application relates to the field of wireless communication technology, and in particular to a method and device for HARQ information feedback in an Internet of Vehicles (IoV). Background Art

[0002] For cellular vehicle networking technology, the design includes two versions, 4G LTE V2X and 5G NR V2X. The communication resources between terminals can be allocated by base stations, or the terminals can select two modes through autonomous listening. Among them, 4G LTE SL-Mode3 and 5G NR SL-Mode1 corresponding to the side link communication are allocated based on the base station, and 4G LTE SL-Mode4 and 5G NR SL-Mode2 corresponding to the side link communication are selected through autonomous listening of the terminal. In the design of 5G NR V2X, for the coexistence relationship between 4G LTEV2X 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. In addition, if a device includes both LTE V2X and NR V2X side link communication (SL) modules, it can select one of the SLs of LTE V2X and NR V2X for communication according to the SL communication priority and device implementation.

[0003] However, in the existing design, 5G NR V2X and LTE V2X are considered to work on different carriers or resource pools, and the occupied transmission resources are orthogonal to avoid interference between the two systems. In the subsequent technological evolution, considering the limited frequency resources and the need for more frequency resources to meet the higher transmission rate requirements of V2X, LTE V2X and NR V2X need to be deployed in the same channel for co-channel co-existence. The coexistence between LTE SL-Mode 3 and 5G NR SL-Mode 1 can be further divided into two modes: co-channel co-existence at the same station and co-channel co-existence at different stations. Figures 1-2 In the evolution of NR V2X, considering the early deployment of LTE V2X, the design of the co-existence of NR V2X and LTE V2X on the same channel needs to minimize the resource conflict between the LTE V2X solution and the NR V2X solution. Summary of the invention

[0004] The present application proposes a method and device for HARQ information feedback in the Internet of Vehicles to solve the problem of collision between the PSFCH resources corresponding to the feedback of the NR PSSCH transmission and the transmission resources occupied by the LTE SL (as well as other NR base station scheduling SLs and other terminal SLs).

[0005] In a first aspect, an embodiment of the present application proposes a vehicle network HARQ information feedback method, which is used in a system where SL coexists on the same channel and is configured with a first network device and a second network device, and includes the following steps:

[0006] Determine the co-channel coexistence resource pool for SL transmission;

[0007] The first network device sends the first information and / or the first network device receives the second information;

[0008] The first information includes PSFCH resource configuration information in a co-channel coexistence resource pool;

[0009] The second information includes time-frequency domain resource information occupied by the PSSCH in the same-channel coexistence resource pool.

[0010] Preferably, the first network device sends a first signaling, the first signaling being used to indicate the PSFCH resource location corresponding to the scheduled PSSCH resource. The resource location information includes at least one of the following information: a resource configuration index corresponding to the PSFCH resource, a time slot where the PSFCH resource is located, and a frequency domain RB location of the PSFCH resource.

[0011] Preferably, the first network device sends a second signaling, wherein the second signaling is used to update the PSFCH resource configuration so that the resources configured as PSFCH in at least one time slot are located at a different position from the resources previously configured as PSFCH.

[0012] Preferably, the first network device sends a third signaling, and the third signaling is used to indicate the availability of configured NR SL resources, and includes at least one of the following information: NR PSSCH resource availability, NR PSFCH resource availability. The configured NR SL resources indicated by the third signaling correspond to a resource pool based on a base station allocation mode, and / or a resource pool based on a terminal self-listening mode.

[0013] Further preferably, the first network device configures multiple sets of PSFCH resources on the same-channel coexistence resource pool, and each set of PSFCH resource configuration parameters includes a PSFCH resource configuration period and / or a frequency domain resource block position.

[0014] Further preferably, the PSFCH resources used for PSSCH transmission in the co-channel co-existence resource pool are configured on a non-co-channel co-existence resource pool.

[0015] Further preferably, the correspondence between the PSFCH resource configuration on the non-co-channel co-existence resource pool and the co-channel co-existence resource pool is configured by the first network device.

[0016] Further preferably, a plurality of sets of PSFCH resources are configured in the non-co-channel co-existence resource pool, wherein at least one set of PSFCH resources is used for HARQ feedback of PSSCH transmission in the co-channel co-existence resource pool.

[0017] In a second aspect, an embodiment of the present application proposes a vehicle network HARQ information feedback method, which is used in a system including a first network device and a second network device configured with SL co-channel coexistence, and includes the following steps:

[0018] The second network device receives the first information and / or the second network device sends the second information;

[0019] The first information includes PSFCH resource configuration information in a co-channel coexistence resource pool;

[0020] The second information includes time-frequency domain resource information occupied by the PSSCH in the same-channel coexistence resource pool.

[0021] Preferably, when the second network device schedules the side link communication resources, it avoids conflicts with the PSFCH resources in the same channel coexistence resource pool in the first information.

[0022] Preferably, the second network device sends a fourth signaling, and the fourth signaling is used to indicate the availability of time-frequency domain resources in the co-channel coexistence resource pool, that is, whether it conflicts with the PSFCH resources in the co-channel coexistence resource pool in the first information.

[0023] In a third aspect, the present application further proposes a vehicle networking HARQ information feedback method, which is used in a system where SL co-channel coexists including a first network device and a second network device, and includes the following steps:

[0024] The terminal device receives a first signaling, where the first signaling is used to indicate a PSFCH resource location corresponding to a scheduled PSSCH resource; and / or the terminal device forwards information about the PSFCH resource location via an SCI or a PSSCH MAC CE.

[0025] In a fourth aspect, the present application further proposes a vehicle networking HARQ information feedback method, which is used in a system where SL coexists on the same channel and is configured with a first network device and a second network device, and comprises the following steps:

[0026] The terminal device receives a second signaling, where the second signaling is used to update the PSFCH resource configuration so that the resources configured as PSFCH in at least one time slot are different from the resource positions previously configured as PSFCH; and / or the terminal device forwards the information of updating the PSFCH resource configuration via SCI or PSSCH MAC CE.

[0027] In a fifth aspect, an embodiment of the present application further proposes a vehicle network HARQ information feedback method, which is used in a system where SL coexists on the same channel and is configured with a first network device and a second network device, and includes the following steps:

[0028] The terminal device receives a third signaling, where the third signaling is used to indicate the availability of configured SL resources, i.e., whether it conflicts with the time-frequency domain resources occupied by the PSSCH in the second information; and / or, the terminal device forwards the availability information via SCI or PSSCH MACCE.

[0029] In a sixth aspect, an embodiment of the present application further proposes a vehicle network HARQ information feedback method, which is used in a system where SL coexists on the same channel and is configured by a first network device and a second network device, and comprises the following steps:

[0030] The terminal device receives a fourth signaling, which is used to indicate the availability of time-frequency domain resources in the co-channel coexistence resource pool, that is, whether it conflicts with PSFCH resources in the co-channel coexistence resource pool; and / or the terminal device forwards the availability information through SCI or PSSCH MAC CE.

[0031] In the seventh aspect, the present application also proposes a network device for implementing the method of any one embodiment of the first to sixth aspects of the present application, and at least one module in the network device is used 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; sending the third signaling.

[0032] In the eighth aspect, the present application also proposes a network device for implementing the method of any one embodiment of the first to sixth aspects of the present application, and at least one module in the network device is used to implement at least one of the following functions: receiving the first information; sending the second information; sending the fourth signaling.

[0033] In the ninth aspect, the present application proposes a terminal device for implementing the method of any one embodiment of the first to sixth aspects of the present application, and at least one module in the terminal device is used to implement at least one of the following functions: receiving the first signaling; forwarding the information of the PSFCH resource location through SCI or PSSCH MAC CE; receiving the second signaling; forwarding the information of updating the PSFCH resource configuration through SCI or PSSCH MAC CE; receiving the third signaling; forwarding the information of the availability of the configured NR SL resources through SCI or PSSCH MAC CE; receiving the fourth signaling; forwarding the information of the availability of time-frequency domain resources in the same-channel co-existence resource pool through SCI or PSSCH MAC CE.

[0034] In the tenth aspect, an embodiment of the present application further proposes a communication device, comprising: a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein when the computer program is executed by the processor, the steps of the method described in any one of the embodiments of aspects 1 to 6 of the present application are implemented.

[0035] In the eleventh aspect, an embodiment of the present application further proposes a computer-readable medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the method described in any one of the embodiments of aspects one to six of the present application are implemented.

[0036] In the twelfth aspect, an embodiment of the present application also proposes a mobile communication system, comprising at least one network device as described in the embodiment of the seventh aspect of the present application and at least one network device as described in the embodiment of the eighth aspect of the present application.

[0037] Furthermore, the mobile communication system also includes at least one terminal device as described in the ninth aspect embodiment of the present application.

[0038] At least one of the above technical solutions adopted in the embodiments of the present application can achieve the following beneficial effects:

[0039] It can effectively avoid the PSFCH resource collision problem of LTE SL and NR SL under co-channel coexistence, support flexible HARQ feedback of NR SL under co-channel coexistence, and reduce the PSSCH transmission delay and HARQ feedback delay caused by resource collision problem. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0041] Figure 1 Schematic diagram of LTE SL and NR SL coexisting on the same channel at the same site;

[0042] Figure 2 Schematic diagram of LTE SL and NR SL co-channel coexistence in different stations;

[0043] Figure 3 Schematic diagram of PSSCH and PSFCH resource distribution and conflict;

[0044] Figure 4 A schematic diagram of the PSFCH resource location indicated by the first signaling;

[0045] Figure 5 A schematic diagram of a PSFCH resource configuration change indicated by a second signaling;

[0046] Figure 6 A schematic diagram showing the corresponding relationship between PSFCH configurations in the same channel resource pool and in the non-co-channel resource pool;

[0047] Figure 7 A schematic diagram of information interaction between a first network device and a second network device;

[0048] Figure 8 is a schematic diagram of an embodiment of a network device;

[0049] Fig. 9 is a schematic diagram of an embodiment of a terminal device;

[0050] Fig.10 A schematic diagram of the structure of a network device according to another embodiment of the present invention;

[0051] Fig.11 is a block diagram of a terminal device according to another embodiment of the present invention. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in combination with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0053] The technical solutions provided by various embodiments of the present application are described in detail below in conjunction with the accompanying drawings.

[0054] Figure 1 Schematic diagram of LTE SL and NR SL coexisting on the same channel at the same site.

[0055] LTE SL and NR SL communication resources are scheduled simultaneously through one base station. The PSSCH of LTE SL and the PSSCH of NR SL use a time-frequency domain resource pool, that is, the same channel shared resource pool.

[0056] Figure 2 Schematic diagram of LTE SL and NR SL coexisting on the same channel at different stations.

[0057] LTE SL and NR SL communication resources are scheduled through different base stations. The PSSCH of LTE SL and the PSSCH of NR SL use a time-frequency domain resource pool, that is, the same channel shared resource pool.

[0058] Figure 3 Schematic diagram of PSSCH and PSFCH resource distribution and conflict.

[0059] In the present application, SL resources include resources for PSSCH transmission and PSFCH transmission. For co-existence of the same channel at the same station, the base station can centrally manage the resources of LTE SL and NR SL, and LTE SL Mode3 and NR SL Mode1 use mutually orthogonal resources for transmission. For co-existence of the same channel at different stations, collaborative resource management between base stations is required to avoid resource collision between LTE SL Mode3 and NR SL Mode1. However, SL HARQ feedback is not supported in LTE SL, and a subframe in its frame structure design only contains PSSCH and DMRS transmission, and no symbols are configured for PSFCH to support HARQ information transmission. Therefore, regardless of co-existence of the same channel at the same station or co-existence of the same channel at different stations, there may be a situation where the LTE SL PSSCH transmission resources occupy the PSFCH resources for HARQ feedback corresponding to the NR SLPSSCH transmission. For example, assuming that according to the NR channel configuration, the PSFCH configuration period is 4 time slots, and the minimum time interval between the PSSCH and its corresponding PSFCH time slot is 2 time slots, then the correspondence between every 4 PSSCH transmission time slots and the time slot where the PSFCH resource is located is shown in the following figure. In the system frame SFN=0 time slot 7, the PSFCH resource is configured, and the PSFCH resource on time slot 7 corresponds to the PSSCH transmission HARQ information feedback on time slots 1, 2, 3, and 4. When the system frame SFN=0 time slot 7 is occupied by LTE SL transmission, NR cannot support PSSCH transmission HARQ information feedback on time slots 1, 2, 3, and 4

[0060] Therefore, in order to support HARQ information feedback of NR SL, it is necessary to (1) select the PSSCH time slot corresponding to the PSFCH time slot that is not occupied by LTE SL in the future, for example, select Figure 3 The PSSCH transmission time slot corresponding to the PSFCH resource configured in time slot 1 of the system frame SFN=1, that is, time slot 5, time slot 6, time slot 7 and time slot 8 of the system frame SFN=0; or (2) enhanced NR SL HARQ feedback design.

[0061] If solution (1) is selected, the NR PSSCH transmission delay will increase. If solution (2) is selected, there is currently no corresponding enhanced solution to solve the collision problem between PSFCH resources and LTE SL resources, and a corresponding solution design is needed.

[0062] To illustrate the method of the present application, a first network device is first considered.

[0063] In a first aspect, an embodiment of the present application proposes a vehicle network HARQ information feedback method for a co-channel coexistence system of SL communication resources scheduled by a first network device and a second network device, comprising the following steps:

[0064] Step 101: determine a SL transmission co-channel co-existence resource pool, the first network determines PSFCH resource configuration information on the co-channel co-existence resource pool, and the second network device determines PSSCH transmission resource occupancy information on the co-existence resource pool.

[0065] In the first network device and the second network device, the method of determining the SL transmission co-channel coexistence resource pool can be determined by protocol agreement or core network high-level configuration. For example, two SL resource pools are configured in the first network device, wherein the first resource pool is used as the co-channel coexistence resource pool for scheduling SL with the second network device, and the second resource pool is not used as the co-channel coexistence resource pool for scheduling SL with the second network device (non-co-channel coexistence resource pool). That is, when the first network device and the second network device configure the SL resource pool, which specific resource pool is used as the co-channel coexistence resource pool is determined by protocol agreement or by the core network indicating to the network device through high-level signaling.

[0066] The co-channel co-existence resource pool and the non-co-channel co-existence resource pool occupy different time-frequency resources.

[0067] The PSFCH is a channel that carries HARQ ACK / NACK information corresponding to PSSCH transmission, and the PSSCH is a data channel for communication between terminals.

[0068] 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 parameters includes a PSFCH resource configuration period and / or a frequency domain resource block position. For each set of PSFCH resource configuration, the correspondence between the PSSCH transmission and the corresponding PSFCH resource carrying the HARQ ACK information is the same as the existing protocol.

[0069] When the first network device configures the PSFCH resources on the non-coexistence 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 correspondence between the PSSCH transmission and the corresponding PSFCH resource carrying HARQ ACK information is the same as the existing protocol.

[0070] Further optionally, when the terminal determines the PSFCH resource position corresponding to the NR PSSCH on a SL resource pool, it needs to know which set of PSFCH resource configuration on the resource pool is used, and the determination is made by (1) the first network device specifically indicating which set of PSFCH resource configuration, or (2) which set of PSFCH resource configuration corresponds to the first PSFCH resource corresponding to the minimum interval requirement between the PSSCH and the corresponding PSFCH resource (this application uses the PSFCH resource configuration index to represent it). For example, the first network device configures 2 sets of PSFCH resource configurations on the resource pool coexisting with the LTE SL. When the first network device schedules NRPSSCH to the SL sending terminal, it also indicates the use of the first set of PSFCH resource configurations for the sending terminal to determine the PSFCH resources corresponding to the PSSCH. The SL sending terminal further indicates to the receiving terminal that the first set of PSFCH resource configurations is used for the receiving terminal to determine the PSFCH resources corresponding to the PSSCH. Alternatively, when the minimum interval requirement between the sending PSSCH and the corresponding PSFCH resource is met as the PSFCH resource under the first set of PSFCH resource configuration, the transmitting terminal and the receiving terminal use the first set of PSFCH configuration to determine the HARQ feedback PSFCH resource corresponding to the PSSCH.

[0071] It should be noted that if the first network device configures multiple sets of PSFCH resources on a SL resource pool. In the terminal self-selection resource mode, the SL sending terminal can self-determine which set of PSFCH resources to select, and the selection method includes: (1) the sending terminal indicates to the receiving terminal which set of resource configuration to use, or (2) the PSFCH resource configuration corresponding to the first PSFCH resource corresponding to the minimum interval requirement between the PSSCH and the corresponding PSFCH resource is determined.

[0072] Further preferably, the PSFCH resources corresponding to the PSSCH transmission in the co-channel co-existence resource pool are configured on the non-co-channel co-existence resource pool, and the PSFCH resources are not configured on the co-channel co-existence resource pool. For example, the HARQ feedback PSFCH resources for the NR PSSCH transmission on the resource pool where the NR SL network device co-exists with the LTE SL on the same channel are configured on the resource pool that does not co-exist with the LTE SL on the same channel.

[0073] Further preferably, the correspondence between the non-co-channel coexistence resource pool and the co-channel coexistence resource pool is configured by the first network device.

[0074] Further preferably, a plurality of sets of PSFCH resources are configured in the non-co-channel co-existence resource pool, wherein at least one set of PSFCH resources is used for HARQ feedback of PSSCH transmission in the co-channel co-existence resource pool.

[0075] Step 102, the first network device sends first information and / or the first network device receives second information; the first information includes PSFCH resource configuration information in the same-channel coexistence resource pool; the second information includes time-frequency domain resource information occupied by PSSCH in the same-channel coexistence resource pool.

[0076] For example, the first information between base stations sent by the NR network device to the LTE network device includes PSFCH resource configuration information on the co-channel coexistence resource pool, and the LTE network device avoids using the time-frequency resources corresponding to the NR PSFCH resources when scheduling LTE SL resources. The second information sent by the LTE network device to the NR network device includes LTE SL resource occupancy information.

[0077] The first network device and the second network device determine an SL co-channel coexistence resource pool, 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.

[0078] The first information includes the PSFCH resource configuration information of the first network device on the SL co-channel coexistence resource pool configured with the second network device. The second network device avoids using the time-frequency resources corresponding to the PSFCH resources of the first network device when scheduling SL resources, and / or, based on the SL configuration of the second network device, the terminal avoids using the time-frequency resources corresponding to the PSFCH resources configured by the first network device when selecting SL resources by itself.

[0079] The second information includes time-frequency resource information occupied by SL transmission of the second network device in the SL coexistence resource pool configured with the first network device on the same channel.

[0080] It should be noted that the first network device and the second network device described in the present invention may represent different base station devices, such as two NR base stations, or the first network device may be an NR base station and the second network device may be an LTE base station, or different types of systems may coexist under the same base station device, for example Figure 1 The same base station can support SL scheduling under both LTE and NR types. At this time, the first information and the second information can be used as information for interaction between the NR functional module and the LTE functional module inside the base station.

[0081] In this technical feature, the PSFCH resource configuration information on the resource pool supporting co-channel coexistence described in the first information includes the frequency domain resource block location, configuration period, etc. occupied by PSFCH.

[0082] The first information also includes the subcarrier spacing that supports the scheduling of SL by the first network device on the same channel coexistence resource pool. Assume that when the subcarrier spacing of the first network device SL is 15KHz, the PSFCH period is configured as 2 time slots, corresponding to the PSFCH time slot IDs configured in a system frame of 1, 3, 5, 7, and 9. If the second network device is an LTE base station, it means that the available resources of the second network device SL in the coexistence resource pool are subchannels that are not configured with PSFCH resources, that is, the available resources for scheduling SL by the second network device are all subchannels in time slot IDs 0, 2, 4, 6, and 8, and subchannels in time slot IDs 1, 3, 5, 7, and 9 that are not occupied by NR PSFCH.

[0083] If the second network device is an NR base station, the available SL resources scheduled by the second network device are all subchannels in time slots ID 0, 2, 4, 6, 8 and subchannels and transmission symbols not occupied by NR PSFCH in time slots ID 1, 3, 5, 7, 9. In addition to the time-frequency resources not occupied by the PSFCH configured by the first network device, the PSFCH resources configured by the second network device may also occupy the same time-frequency resources as the PSFCH configured by the first network device, but use PSFCH code domain resources that are orthogonal to the PSFCH resource generation sequence configured by the first network device.

[0084] Step 103: The first network device sends at least one of a first signaling, a second signaling, and a third signaling.

[0085] Preferably, when the first network device schedules NR SL, the first network device sends a first signaling, and the first signaling is used to indicate the PSFCH resource position corresponding to the scheduled PSSCH, so as to avoid the conflict between the PSFCH resource position and the time-frequency domain resources occupied by the PSSCH in the second information. It should be noted that the HARQ feedback PSFCH resource position corresponding to the PSSCH transmission resource is indicated by the first signaling, and the first signaling is a terminal device-specific signaling, which can be included in the DCI 3_0 or MA CE indication; the transmitting terminal device further indicates the indicated HARQ feedback PSFCH resource to the receiving terminal device through SCI. If the first network device configures multiple sets of PSFCH resource configurations in the same-channel coexistence resource pool, or the PSSCH transmission on the same-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 configurations to use.

[0086] Preferably, the first network device updates the configuration of NR SL PSFCH resources through the second signaling. The first network device sends a second signaling, and the second signaling is used to update the PSFCH resource configuration so that the resources configured as PSFCH in at least one time slot are different from the resource positions previously configured as PSFCH. It should be noted that the configuration of NR SLPSFCH resources is updated through the second signaling, and the second signaling is a multicast DCI or a cell-common RRC signaling, which updates the PSFCH resource position on the resource pool coexisting with the LTESL on the same channel under the SL BWP configured by the NR. Update the PSFCH resource configuration indicating a specific time slot.

[0087] Preferably, the first network device indicates the availability of configured NR SL resources through a third signaling. The first network device sends a third signaling, and the third signaling is used to indicate the availability of the configured NR SL resources, that is, whether it conflicts with the time-frequency domain resources occupied by the PSSCH in the second information. NR SL resources are NR PSSCH resources and / or NR PSFCH resources. It should be noted that the availability of configured NR SL resources is indicated by the third signaling. The third signaling is a multicast DCI or a cell-common RRC signaling, indicating the availability of configured NR SL resources (indicating the availability of SL resources on a specific time slot). If the NR SL resource corresponding to the indicated availability is a PSFCH resource, when the number of PRBs corresponding to the available PSFCH resources cannot be divided by the product of the PSFCH configuration period and the number of NRPSSCH subchannels, consider the PSFCH and the corresponding PSSCH transmission resource remapping method.

[0088] Figure 4 A schematic diagram of the PSFCH resource location indicated by the first signaling.

[0089] When the first network device schedules the NR SL, it sends the PSFCH resource location of the HARQ information feedback corresponding to the NR PSSCH resource to the SL terminal through the first signaling.

[0090] In this technical feature, assuming that the base station schedules NR PSSCH, when the first network device determines that the PSFCH resource of the HARQ feedback corresponding to the scheduled NR PSSCH is occupied by the second network device SL according to the second information, in order to avoid conflicts, the corresponding PSFCH resource position is indicated by the first signaling for the scheduled NR PSSCH, and the resource position information includes at least one of the following information: 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 to determine which set of PSFCH resource configuration to use when multiple sets of PSFCH resource configurations are configured on the same channel coexistence resource pool, or when the PSSCH transmission on the same channel coexistence resource pool corresponds to multiple sets of PSFCH resource configurations on the non-co-channel coexistence resource pool.

[0091] For example Figure 4 As shown, assuming that the first network device schedules NR PSSCH1 in time slot n+1, according to the existing protocol standard, the HARQ feedback PSFCH resource position corresponding to NR PSSCH1 is RB1 in time slot n+4, but a channel coexistence collision occurs with LTE SL. The first network device indicates through the first signaling that the HARQ feedback PSFCH resource corresponding to PSSCH1 is RB3 in time slot n+1.

[0092] 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 time 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.

[0093] Further optionally, if the first signaling does not indicate which set of resource configurations the PSFCH resources correspond to, and multiple sets of PSFCH resources are configured in the co-channel co-existence resource pool, or the PSSCH transmission on the co-channel co-existence resource pool corresponds to multiple sets of PSFCH resources on the non-co-channel co-existence resource pool, the terminal determines which set of PSFCH resource configurations to use by (1) a default set of PSFCH resource configurations, or (2) a set of PSFCH resource configurations corresponding to the first PSFCH resource that meets the minimum spacing requirement between the PSSCH and the corresponding PSFCH resource.

[0094] Further optionally, after the first network device indicates the PSFCH resource location corresponding to the PSSCH to the sending terminal through the first signaling, the SL sending terminal further sends the PSFCH resource location to the receiving terminal through the SCI or PSSCH MAC CE.

[0095] It should be noted that for the SL sending terminal, if it is learned through the first signaling sent by the first network device, or the assistance information sent by other terminals that the selected PSSCH is occupied according to the existing corresponding PSFCH resources, the PSFCH resources corresponding to the PSSCH can also be indicated through SCI or PSSCH MAC CE.

[0096] Further optionally, the first signaling indicates the PSFCH resource position corresponding to the PSSCH through the reserved bit of DCI format 3_0 or MAC CE.

[0097] Further optionally, when the first network device indicates multiple NR PSSCH repeated transmissions to the SL sending terminal, it further indicates the HARQ feedback PSFCH resource corresponding to one or more of the multiple repeatedly transmitted PSSCHs. If there is no indication, for multiple NR PSSCH repeated transmission scenarios, if the PSFCH resource location is indicated, it corresponds to the last PSSCH transmission by default.

[0098] Further optionally, when the SL transmitting terminal indicates multiple NR PSSCH repeated transmissions to the receiving terminal, it further indicates the HARQ feedback PSFCH resource corresponding to one or more of the multiple PSSCHs of the repeated transmissions. If there is no indication, for multiple NR PSSCH repeated transmission scenarios, if the PSFCH resource location is indicated, it corresponds to the last PSSCH transmission by default.

[0099] Figure 5 This is a schematic diagram of the PSFCH resource configuration change indicated by the second signaling.

[0100] The first network device updates the configuration of NR SL PSFCH resources through the second signaling

[0101] In this feature, the first network device determines the resource occupancy of the second network device SL in the coexistence resource pool based on the second information, and can further dynamically update the configuration of the NR SL PSFCH resources through the second signaling, such as changing the configuration period of the NRSL PSFCH resources and the PRB position occupied in the frequency domain to avoid resource collision with the second network device (such as LTE) SL.

[0102] The second signaling is further designed as a multicast DCI or cell-common RRC signaling, which is broadcast to terminals supporting NR SL within the coverage of the NR base station. The NR SL terminal can broadcast the information to surrounding terminals through SL.

[0103] Optionally, the second signaling indicates the PSFCH resource configuration on a specific time slot. It can further indicate the effective time and period of the PSFCH resource configuration on the time slot, and restore the original PSFCH resource configuration after the effective time. For example, as shown in the figure below, assuming that the PSFCH period is configured to 3 time slots, and the time slots where the PSFCH resources are configured are n+1, n+4, n+7, and n+10, indicating that the PSFCH resource configuration corresponding to time slot n+4 is changed, and the change period is 6 time slots, the corresponding changed PSFCH resource configuration is as follows Figure 5 shown.

[0104] The first network device indicates the availability of configured NR SL resources through a third signaling.

[0105] In this feature, the first network device indicates the availability of the configured NR SL resources to the NR SL terminal through the third signaling based on the second information, and the availability is represented by the unusable SL (PSSCH / PSFCH) transmission time-frequency domain resources, or the usable SL (PSFCH / PSSCH) time-frequency domain resources. The third signaling indication includes at least one of the following information: NR PSSCH resource availability, NR PSFCH resource availability.

[0106] Further optionally, the first network device and the second network device use different SL time slots or frequency domain resources in the coexistence resource pool, and the first network device indicates to the terminal the time slots or frequency domain resources that can be used for NR SL transmission through the third signaling, and the PSFCH corresponding to the NR PSSCH is also in the available NR SL transmission time slot or frequency domain resources. The time slot or frequency domain resources that can be used for NR SL transmission indicated by the third signaling correspond to the resource pool of NR SL based on the base station allocation mode, and or based on the resource pool in the terminal self-listening mode.

[0107] The third signaling is multicast DCI or cell-common RRC signaling, which indicates the time-frequency domain resources available for NR SL, and may also indicate the availability of SL frequency domain resources on a specific time slot.

[0108] The third signaling may also be a signaling dedicated to the terminal device, indicating the availability of PSFCH frequency domain resources on the PSFCH time slot corresponding to the NR PSSCH transmission. Further optionally, when the first network device indicates multiple NR PSSCH repeated transmissions, it further indicates the availability of HARQ feedback PSFCH resources corresponding to one or more PSSCHs of the multiple repeated transmissions. If there is no indication, for multiple NR PSSCH repeated transmission scenarios, if the PSFCH resource availability is indicated, it corresponds to the last PSSCH transmission by default.

[0109] Further optionally, the transmitting terminal may send the availability of the SL resources indicated by the third signaling to the receiving terminal through the SL link. If the indicated SL resource availability includes the availability of the PSFCH resources, if the PSFCH resources corresponding to the PSSCH selected by the transmitting terminal are not available, it means that the receiving terminal may not make corresponding HARQ feedback. Or if the PSFCH resources corresponding to the PSSCH selected by the transmitting terminal are not available, when indicating the PSSCH transmission to the receiving terminal, the receiving terminal may be instructed not to make HARQ feedback for the PSSCH transmission.

[0110] Further optionally, after the transmitting terminal and the receiving terminal learn the availability of the PSFCH resources corresponding to the PSSCH transmission, the method for determining the PSFCH resources corresponding to the PSSCH transmission is:

[0111] 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 the available PSFCH resources is changed from Q configured by the system to Z (Z is an integer less than Q), the number of PSFCH cyclic shift pairings is K, the number of PSSCH transmissions on a subchannel is, and the number of PSSCH occupied subchannels is L, then the PSFCH resource ID is determined to be (S_ID+M_ID) mod R, where The value of H is 1 or L according to the coordination of high-level layers.

[0112] Figure 6 Schematic diagram of the corresponding relationship between PSFCH configurations in the same-channel resource pool and non-co-channel resource pool.

[0113] In step 101, the first network device configures HARQ feedback PSFCH resources for NR PSSCH transmission on a resource pool coexisting with the second network device SL on a resource pool not coexisting with the second network device SL on the same channel

[0114] In this feature, the system configuration corresponding to the first network device NR SL PSSCH transmission resource pool and the corresponding HARQ feedback PSFCH resource pool are configured. For example, multiple sets of PSFCH resources are configured in one resource pool, and one set of PSFCH resources is selected as the HARQ feedback resource corresponding to the PSSCH transmission of another resource pool. Figure 6As shown, the PSFCH resources corresponding to the HARQ feedback in the PSSCH resources in resource pool 2 are configured in resource pool 1. The specific determination of the PSFCH resource ID where the PSSCH resources are located is the same as the existing technical solution. The main difference is that the PSFCH and the corresponding PSSCH are transmitted in different resource pools to avoid the collision problem between the PSFCH corresponding to the NR PSSCH and the LTE SL transmission in the coexistence resource pool of the NR PSSCH and the LTE SL.

[0115] To further illustrate the method of the present application, consider the second network device, and its working process is as follows. The present application embodiment proposes a vehicle network HARQ information feedback method, which is used in a system including a first network device and a second network device configured with SL co-channel coexistence, and includes the following steps:

[0116] Step 201: Determine the same channel shared resource pool (same as step 101)

[0117] Step 202: The second network device receives the first information and / or the second network device sends the second information;

[0118] The first information includes PSFCH resource configuration information in a co-channel coexistence resource pool;

[0119] The second information includes time-frequency domain resource information occupied by the PSSCH in the same-channel coexistence resource pool.

[0120] Preferably, when the second network device schedules the side link communication resources, it avoids conflicts with the PSFCH resources in the same channel coexistence resource pool.

[0121] Step 203: The second network device sends a fourth signaling, where the fourth signaling is used to indicate the availability of time-frequency domain resources in the co-channel coexistence resource pool, that is, whether it conflicts with the PSFCH resources in the co-channel coexistence resource pool in the first information.

[0122] In this embodiment, the second network device avoids using the time-frequency resources corresponding to the PSFCH resources of the first network device when scheduling SL resources, and / or, based on the SL configuration of the second network device, the terminal avoids using the time-frequency resources corresponding to the PSFCH resources of the first network device when selecting SL resources by itself.

[0123] Figure 7 The communication relationship between the first network device and the second network device of the present application is briefly described, including step 102 and step 202.

[0124] To further illustrate the method of the present application, consider a terminal device, and its working process is as follows. The present application also proposes a vehicle network HARQ information feedback method, 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:

[0125] Step 301A, the terminal device receives a first signaling, where the first signaling is used to indicate a PSFCH resource position corresponding to a scheduled PSSCH resource, so as to avoid a conflict between the PSFCH resource position and the time-frequency domain resources occupied by the PSSCH transmission in the second information;

[0126] Step 302A: The terminal device forwards the information of the PSFCH resource location via SCI or PSSCH MAC CE.

[0127] Alternatively, the process includes the following steps 301B to 302B:

[0128] 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 time slot is different from the resource position previously configured as the PSFCH;

[0129] Step 302B: The terminal device forwards the information of updating the PSFCH resource configuration via SCI or PSSCH MAC CE.

[0130] Alternatively, the following steps 301C to 302C are included:

[0131] Step 301C: The terminal device receives a third signaling, where the third signaling is used to indicate the availability of configuring NR SL resources, that is, whether it conflicts with the time-frequency domain resources occupied by the PSSCH in the second information;

[0132] Step 302C: The terminal device forwards the availability information via SCI or PSSCH MAC CE.

[0133] The sending terminal may send the availability of the PSFCH resources indicated by the third signaling to the receiving terminal via the SL link, or the sending terminal may send the availability of the PSSCH resources indicated by the third signaling to the receiving terminal via the SL link.

[0134] Alternatively, the following steps 301D to 302D are included:

[0135] Step 301D: The terminal device receives 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, that is, whether the resources conflict with the PSFCH resources in the co-channel coexistence resource pool in the first information;

[0136] Step 302D: The terminal device forwards the availability information via SCI or PSSCH MAC CE.

[0137] Figure 8 A schematic diagram of an embodiment of a network device.

[0138] An embodiment of the present application also proposes a network device, using the method of any one of the embodiments of the present application, the network device is used as a first network device, and its at least one module is used to implement at least one of the following functions: sending the first information; receiving the second information; sending the first signaling, the second signaling, and the third signaling.

[0139] Alternatively, the network device is used as a second network device, and at least one module thereof is used to implement at least one of the following functions: receiving the first information; sending the second information; sending the fourth signaling.

[0140] To implement the above technical solution, the present application proposes a network device 400, which includes a network sending module 401, a network determining module 402, and a network receiving module 403.

[0141] The network sending module is used to send at least one of the first signaling, the second signaling, the third signaling, and the fourth signaling; when constituting a first network device, it is also used to send the first information; when constituting a second network device, it is also used to send the second information.

[0142] The network determination module is used to determine the co-channel shared resource pool; it is also used to determine the conflict relationship between PSFCH resources and PSSCH based on the first information or second information received, and then determine the availability of the PSFCH resources based on the PSSCH occupied resources in the second information; or, determine the availability of PSSCH time-frequency domain resources based on the PSFCH resource configuration information in the first information.

[0143] The network receiving module is used to receive the second information when constituting the first network device; and is used to receive the first information when constituting the second network device.

[0144] The specific methods for implementing the functions of the network sending module, the network determining module, and the network receiving module are as described in the various method embodiments of the present application and will not be repeated here.

[0145] Fig. 9 It is a schematic diagram of an embodiment of a terminal device.

[0146] The present application also proposes a terminal device, using the method of any one of the embodiments of the present application, at least one module in the terminal device is used for at least one of the following functions: receiving the first signaling; forwarding the information of the PSFCH resource location through SCI or PSSCH MAC CE; receiving the second signaling; forwarding the information of updating the PSFCH resource configuration through SCI or PSSCH MAC CE; receiving the third signaling; forwarding the information configured as the availability of NGSL resources through SCI or PSSCH MAC CE; receiving the fourth signaling; forwarding the information of the availability of time-frequency domain resources in the same-channel co-existence resource pool through SCI or PSSCH MAC CE.

[0147] To implement the above technical solution, the present application proposes a terminal device 500, which includes a terminal sending module 501, a terminal determining module 502, and a terminal receiving module 503.

[0148] The terminal receiving module is used to receive at least one of the first signaling, the second signaling, the third signaling, and the fourth signaling.

[0149] The terminal determination module is used to determine resources for sending PSSCH and / or PSFCH according to at least one information in the first signaling, the second signaling, the third signaling, and the fourth signaling.

[0150] The terminal sending module is used to send at least one of the information of the PSFCH resource location, the information of updating the PSFCH resource configuration, and the availability information.

[0151] The specific methods for implementing the functions of the terminal sending module, the terminal determining module, and the terminal receiving module are as described in the various method embodiments of the present application and will not be repeated here.

[0152] The terminal device described in this application may refer to a mobile terminal device.

[0153] Fig.10A schematic diagram of the structure of a network device according to another embodiment of the present invention is shown. As shown in the figure, the network device 600 includes a processor 601, a wireless interface 602, and a memory 603. Among them, the wireless interface can be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium. The wireless interface implements the communication function with the terminal device, processes wireless signals through receiving and transmitting devices, and the data carried by the signals communicates with the memory or processor via an internal bus structure. The memory 603 contains a computer program for executing any one embodiment of the present application, and the computer program runs or changes on the processor 601. When the memory, processor, and wireless interface circuit are connected via a bus system. The bus system includes a data bus, a power bus, a control bus, and a status signal bus, which will not be repeated here.

[0154] Fig.11 700 is a block diagram of a terminal device according to another embodiment of the present invention. The terminal device 700 includes 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 through a bus system. The bus system is used to realize connection and communication between these components. The bus system includes a data bus, a power bus, a control bus and a status signal bus.

[0155] 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.

[0156] The memory 702 stores executable modules or data structures. The memory may store an operating system and application programs. The operating system includes various system programs, such as a framework layer, a core library layer, a driver layer, etc., which are used to implement various basic services and process hardware-based tasks. The application program includes various application programs, such as a media player, a browser, etc., which are used to implement various application services.

[0157] In an 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 .

[0158] The memory 702 includes a computer-readable storage medium, and the processor 701 reads the information in the memory 702 and completes the steps of the above method in combination with its hardware. Specifically, the computer-readable storage medium stores a computer program, and when the computer program is executed by the processor 701, each step of the method embodiment described in any of the above embodiments is implemented.

[0159] The processor 701 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the method of the present application can be completed by an integrated logic circuit of hardware in the processor 701 or an instruction in software form. The processor 701 may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a ready-made programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component. The methods, steps, and logic block diagrams disclosed in the embodiments of the present invention can be implemented or executed. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc. The steps of the method disclosed in conjunction with the embodiments of the present invention can be directly embodied as being executed by a hardware decoding processor, or executed by a combination of hardware and software modules in a decoding processor.

[0160] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of complete hardware embodiments, complete software embodiments, or embodiments combining software and hardware. In a typical configuration, the device of the present application includes one or more processors (CPU), an input / output user interface, a network interface, and a memory.

[0161] Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0162] Therefore, the present application also proposes a computer-readable medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the method described in any embodiment of the present application are implemented. For example, the memory 603, 702 of the present invention may include a non-permanent memory in a computer-readable medium, a random access memory (RAM) and / or a non-volatile memory, such as a read-only memory (ROM) or a flash RAM.

[0163] based on Figures 8 to 11 In addition to the embodiments of the present application, the present application also provides a mobile communication system, comprising at least one embodiment of the first network device and at least one embodiment of the second network device in the present application. Furthermore, the present application also includes at least one embodiment of a terminal device.

[0164] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0165] It should also be noted that the terms “first” and “second” in the present application are used to distinguish multiple objects with the same name and have no other special meaning unless specifically stated.

[0166] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A vehicle network HARQ information feedback method, used in a system where SL coexists on the same channel and is configured by a first network device and a second network device, It is characterized in that The following steps are involved: Determine the co-channel coexistence resource pool for SL transmission; The first network device sends the first information and receives the second information; The first information includes PSFCH resource configuration information in a co-channel coexistence resource pool; The second information includes time-frequency domain resource information occupied by the PSSCH in the co-channel coexistence resource pool; The PSFCH resources used for PSSCH transmission in the co-channel co-existence resource pool are configured on the non-co-channel co-existence resource pool.

2. The vehicle networking HARQ information feedback method as claimed in claim 1, It is characterized in that It also includes the following steps: The first network device sends a first signaling, where the first signaling is used to indicate a PSFCH resource position corresponding to the scheduled PSSCH resource; The resource location information includes at least one of the following information: a resource configuration index corresponding to the PSFCH resource, a time slot where the PSFCH resource is located, and a frequency domain RB position of the PSFCH resource.

3. The vehicle networking HARQ information feedback method as claimed in claim 1, It is characterized in that It also includes the following steps: The first network device sends a second signaling, where the second signaling is used to update the PSFCH resource configuration so that the resources configured as PSFCH in at least one time slot are at a different location from the resources previously configured as PSFCH.

4. The vehicle networking HARQ information feedback method as claimed in claim 1, It is characterized in that It also includes the following steps: The first network device sends a third signaling, where the third signaling is used to indicate the availability of configuring NR SL resources, and includes at least one of the following information: availability of NR PSSCH resources and availability of NR PSFCH resources; The configured NR SL resources indicated by the third signaling correspond to a resource pool based on a base station allocation mode and / or a resource pool based on a terminal autonomous listening mode.

5. The vehicle networking HARQ information feedback method as claimed in claim 1, It is characterized in that The first network device configures multiple sets of PSFCH resources on the same-channel coexistence resource pool, and each set of PSFCH resource configuration parameters includes a PSFCH resource configuration period and / or a frequency domain resource block position.

6. The vehicle networking HARQ information feedback method as claimed in claim 1, It is characterized in that The correspondence between the PSFCH resource configuration on the non-co-channel co-existence resource pool and the co-channel co-existence resource pool is configured by the first network device.

7. The vehicle networking HARQ information feedback method as claimed in claim 1, It is characterized in that A plurality of sets of PSFCH resources are configured in the non-co-channel co-existence resource pool, wherein at least one set of PSFCH resources is used for HARQ feedback of PSSCH transmission in the co-channel co-existence resource pool.

8. A vehicle network HARQ information feedback method, used in a system including a first network device and a second network device configured with SL coexisting on the same channel, It is characterized in that The following steps are involved: The second network device receives the first information and sends the second information; The first information includes PSFCH resource configuration information in a co-channel coexistence resource pool; The second information includes time-frequency domain resource information occupied by the PSSCH in the co-channel coexistence resource pool; The PSFCH resources used for PSSCH transmission in the co-channel co-existence resource pool are configured on the non-co-channel co-existence resource pool.

9. The vehicle networking HARQ information feedback method as claimed in claim 8, It is characterized in that The following steps are involved: When the second network device schedules the side link communication resources, it avoids conflicts with the PSFCH resources in the same channel coexistence resource pool in the first information.

10. The vehicle networking HARQ information feedback method as claimed in claim 8, It is characterized in that The following steps are involved: The second network device sends a fourth signaling, where the fourth signaling is used to indicate the availability of time-frequency domain resources in the co-channel coexistence resource pool, that is, whether there is a conflict with the PSFCH resources in the co-channel coexistence resource pool.

11. A vehicle network HARQ information feedback method, used in a system where SL coexists on the same channel and is configured by a first network device and a second network device, It is characterized in that The following steps are involved: The terminal device receives a first signaling, where the first signaling is used to indicate a PSFCH resource position corresponding to a scheduled PSSCH resource; and / or, The terminal device forwards the information of the PSFCH resource location through SCI or PSSCH MAC CE; The PSFCH resources used for PSSCH transmission in the co-channel co-existence resource pool are configured on the non-co-channel co-existence resource pool.

12. A vehicle network HARQ information feedback method, used in a system where SL coexists on the same channel and is configured by a first network device and a second network device, It is characterized in that The following steps are involved: 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 time slot is different from the resource position previously configured as the PSFCH; and / or, The terminal device forwards the information of updating the PSFCH resource configuration via SCI or PSSCH MAC CE; The PSFCH resources used for PSSCH transmission in the co-channel co-existence resource pool are configured on the non-co-channel co-existence resource pool.

13. A vehicle network HARQ information feedback method, used in a system where a first network device and a second network device are configured for SL co-existence, wherein the first network device receives second information, wherein the second information includes time-frequency domain resource information occupied by PSSCH in a co-channel co-existence resource pool; It is characterized in that The following steps are involved: The terminal device receives a third signaling, where the third signaling is used to indicate the availability of configuring SL resources, that is, whether it conflicts with the time-frequency domain resources occupied by the PSSCH described in the second information; and / or, The terminal device forwards the availability information via SCI or PSSCH MAC CE; The PSFCH resources used for PSSCH transmission in the co-channel co-existence resource pool are configured on the non-co-channel co-existence resource pool.

14. A vehicle network HARQ information feedback method, used in a system where a SL co-exists on the same channel and is configured by a first network device and a second network device, wherein the first network device sends first information, wherein the first information includes PSFCH resource configuration information in a co-channel co-existence resource pool; It is characterized in that The following steps are involved: The terminal device receives a fourth signaling, where the fourth signaling is used to indicate the availability of time-frequency domain resources in the co-channel coexistence resource pool, that is, whether there is a conflict with the PSFCH resources in the co-channel coexistence resource pool in the first information; and / or, The terminal device forwards the availability information via SCI or PSSCH MAC CE; The PSFCH resources used for PSSCH transmission in the co-channel co-existence resource pool are configured on the non-co-channel co-existence resource pool.

15. A network device, used to implement the method according to any one of claims 1 to 14, It is characterized in that At least one module in the network device is used to implement at least one of the following functions: Send the first information; receive the second information; send a first signaling; send a second signaling; send a third signaling; The first signaling is used to indicate the PSFCH resource position corresponding to the scheduled PSSCH resource; The second signaling is used to update the PSFCH resource configuration so that the resource configured as the PSFCH in at least one time slot is different from the resource position previously configured as the PSFCH; The third signaling is used to indicate the availability of configured SL resources, that is, whether it conflicts with the time-frequency domain resources occupied by the PSSCH transmission in the second information.

16. A network device, used to implement the method according to any one of claims 1 to 14, It is characterized in that At least one module in the network device is used 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 time-frequency domain resources in the co-channel coexistence resource pool, that is, whether there is a conflict with the PSFCH resources in the co-channel coexistence resource pool in the first information.

17. A terminal device, used to implement the method according to any one of claims 1 to 14, It is characterized in that The at least one module in the terminal device is used to implement at least one of the following functions: Receiving a first signaling, where the first signaling is used to indicate a PSFCH resource position corresponding to a scheduled PSSCH resource; Forwarding the information of the PSFCH resource location through SCI or PSSCH MAC CE; receiving a second signaling, wherein the second signaling is used to update the PSFCH resource configuration so that the resource configured as the PSFCH in at least one time slot is different from the resource position previously configured as the PSFCH; Forwarding the information of updating PSFCH resource configuration through SCI or PSSCH MAC CE; receiving a third signaling, where the third signaling is used to indicate the availability of configuring SL resources, that is, whether the resources conflict with the time-frequency domain resources occupied by the PSSCH in the second information; Forwarding the information on the availability of the SL resources via SCI or PSSCH MAC CE; receiving a fourth signaling, where the fourth signaling is used to indicate the availability of time-frequency domain resources in the co-channel coexistence resource pool, that is, whether the resources conflict with the PSFCH resources in the co-channel coexistence resource pool in the first information; The information on the availability of the time-frequency domain resources is forwarded via the SCI or PSSCH MAC CE.

18. A communication device, It is characterized in that include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program, when executed by the processor, implements the steps of the method according to any one of claims 1 to 14.

19. A computer readable medium, It is characterized in that The computer readable medium stores a computer program, and when the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 14 are implemented.

20. A mobile communication system, It is characterized in that Includes at least one network device as described in claim 15 and at least one network device as described in claim 16.

21. The mobile communication system according to claim 20, It is characterized in that Also includes at least one terminal device as described in claim 17.

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