Physical sidelink feedback channel resource configuration method, terminal and network side device

Abstract

The application discloses a physical sidelink feedback channel resource configuration method, a terminal and a network side device, and belongs to the technical field of communication. The physical sidelink feedback channel resource configuration method comprises the following steps: a first communication device uses a physical sidelink feedback channel (PSFCH) resource to send first signaling to a second communication device according to a first rule, and the first signaling is used for instructing the second communication device to perform resource reselection; wherein the first signaling carries an indication of the following information: whether to perform resource reselection information; collision type information of resource collision; position information of resource collision; time-sensitive characteristic information of resource collision; collision overlap degree information of at least one collided resource; transmission type information of resource collision; necessity degree information of resource reselection; quantity or proportion information of resource collision; service priority information corresponding to the resource causing the collision; and resource reselection priority information.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of communication, and particularly relates to a physical sidelink feedback channel resource configuration method, a terminal and a network side device. BACKGROUND

[0002] For a sidelink (SL) resource selection enhancement scheme, interference detection or resource reservation collision detection can be considered at a receiving end device (RX UE) or other terminal side. If it is detected that the resources reserved by a transmitting end device (TX UE) and the resources reserved by other UEs collide, signaling is sent to the TX UE to indicate that the TX UE triggers resource reselection. In related technologies, it is mentioned that the signaling is sent using a physical sidelink feedback channel (PSFCH) resource to indicate that the TX UE performs resource reselection. However, how to use the PSFCH resource to indicate resource reselection, how to determine the resource occupied by resource reselection information, and the resource multiplexing manner are yet to be solved. SUMMARY

[0003] Embodiments of the present application provide a physical sidelink feedback channel resource configuration method, a terminal and a network side device, which can solve the problem of how to use the PSFCH resource to indicate resource reselection when resource collision is detected.

[0004] In a first aspect, a physical sidelink feedback channel resource configuration method is provided, applied to a first communication device, and the method comprises:

[0005] The first communication device uses a physical sidelink feedback channel (PSFCH) resource to send first signaling to a second communication device according to a first rule, and the first signaling is used to indicate that the second communication device performs resource reselection. The first signaling carries an indication of one of the following information: whether to perform resource reselection information; collision type information of resource collision; position information of resource collision; time-sensitive characteristic information of resource collision; collision overlap degree information of at least one collided resource; transmission type information of resource collision; necessity degree information of resource reselection; quantity or proportion information of resource collision; service priority information corresponding to the collided resource; resource reselection priority information.

[0006] In a second aspect, a physical sidelink feedback channel resource configuration method is provided, applied to a second communication device, and the method comprises:

[0007] The second communication device receives first signaling on a physical sidelink feedback channel (PSFCH) resource, where the first signaling is used to instruct the second communication device to perform resource reselection; and where the first signaling carries an indication of one of the following information: whether to perform resource reselection information; collision type information of resource collision; location information of resource collision; time-sensitive characteristic information of resource collision; collision overlap degree information of at least one collided resource; transmission type information of resource collision; necessity degree information of resource reselection; quantity or proportion information of resource collision; service priority information corresponding to the resource causing collision; resource reselection priority information.

[0008] In a third aspect, a physical sidelink feedback channel resource configuration apparatus is provided, and the apparatus includes:

[0009] A first sending unit is configured to send, according to a first rule, first signaling to a second communication device using a physical sidelink feedback channel (PSFCH) resource, where the first signaling is used to instruct the second communication device to perform resource reselection; and where the first signaling carries an indication of one of the following information: whether to perform resource reselection information; collision type information of resource collision; location information of resource collision; time-sensitive characteristic information of resource collision; collision overlap degree information of at least one collided resource; transmission type information of resource collision; necessity degree information of resource reselection; quantity or proportion information of resource collision; service priority information corresponding to the resource causing collision; resource reselection priority information.

[0010] In a fourth aspect, a physical sidelink feedback channel resource configuration apparatus is provided, and the apparatus includes:

[0011] A first receiving unit is configured to receive, on a physical sidelink feedback channel (PSFCH) resource, first signaling, where the first signaling is used to instruct the second communication device to perform resource reselection; and where the first signaling carries an indication of one of the following information: whether to perform resource reselection information; collision type information of resource collision; location information of resource collision; time-sensitive characteristic information of resource collision; collision overlap degree information of at least one collided resource; transmission type information of resource collision; necessity degree information of resource reselection; quantity or proportion information of resource collision; service priority information corresponding to the resource causing collision; resource reselection priority information.

[0012] In a fifth aspect, a first communication device is provided, which includes a processor, a memory, and a program or instructions stored on the memory and executable on the processor, and the program or instructions, when executed by the processor, implement the steps of the physical sidelink feedback channel resource configuration method according to the first aspect.

[0013] In a sixth aspect, a first communication device is provided, comprising a processor and a communication interface, wherein the processor is configured to transmit, to a second communication device, a first signaling using a physical sidelink feedback channel (PSFCH) resource according to a first rule, the first signaling being used to instruct the second communication device to perform resource reselection; and wherein the first signaling carries an indication of one of the following information: whether to perform resource reselection information; collision type information of resource collision; location information of resource collision; time-sensitive characteristic information of resource collision; collision overlap degree information of at least one collided resource; transmission type information of resource collision; necessity degree information of resource reselection; quantity or proportion information of resource collision; service priority information corresponding to the resource causing collision; and resource reselection priority information.

[0014] In a seventh aspect, a second communication device is provided, comprising a processor, a memory, and a program or instructions stored in the memory and executable on the processor, and the program or instructions, when executed by the processor, implement the steps of the physical sidelink feedback channel resource configuration method according to the second aspect.

[0015] In an eighth aspect, a second communication device is provided, comprising a processor and a communication interface, wherein the communication interface is configured to receive a first signaling on a physical sidelink feedback channel (PSFCH) resource, wherein the first signaling is used to instruct the second communication device to perform resource reselection; and wherein the first signaling carries an indication of one of the following information: whether to perform resource reselection information; collision type information of resource collision; location information of resource collision; time-sensitive characteristic information of resource collision; collision overlap degree information of at least one collided resource; transmission type information of resource collision; necessity degree information of resource reselection; quantity or proportion information of resource collision; service priority information corresponding to the resource causing collision; and resource reselection priority information.

[0016] In a ninth aspect, a readable storage medium is provided, the readable storage medium storing a program or instructions, and the program or instructions, when executed by a processor, implement the steps of the physical sidelink feedback channel resource configuration method according to the first aspect, or implement the steps of the physical sidelink feedback channel resource configuration method according to the second aspect.

[0017] In a tenth aspect, a chip is provided, comprising a processor and a communication interface, wherein the communication interface and the processor are coupled, and the processor is configured to execute a program or instructions to implement the physical sidelink feedback channel resource configuration method according to the first aspect, or implement the physical sidelink feedback channel resource configuration method according to the second aspect.

[0018] In an eleventh aspect, a computer program / program product is provided, which is stored in a non-transitory storage medium, and the program / program product is executed by at least one processor to implement the steps of the physical sidelink feedback channel resource configuration method according to the first aspect, or implement the steps of the physical sidelink feedback channel resource configuration method according to the second aspect.

[0019] In the embodiments of the present application, the PSFCH transmission resource reselection indication signaling can effectively help the second communication device to perform necessary resource reselection, avoid some unnecessary resource reselection, improve the efficiency of resource reselection, improve the transmission efficiency in the sidelink system, and improve the system performance. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structure diagram of a wireless communication system to which the embodiments of the present application can be applied;

[0021] Figure 2 is one of flow diagrams of the physical sidelink feedback channel resource configuration method provided by the embodiments of the present application;

[0022] Figure 3 is one of diagrams for indicating resource collision provided by the embodiments of the present application;

[0023] Figure 4 is another diagram for indicating resource collision provided by the embodiments of the present application;

[0024] Figure 5 is a third diagram for indicating resource collision provided by the embodiments of the present application;

[0025] Figure 6 is a configuration diagram of a cyclic prefix set provided by the embodiments of the present application;

[0026] Figure 7 is a second flow diagram of the physical sidelink feedback channel resource configuration method provided by the embodiments of the present application;

[0027] Figure 8 is a first structure diagram of the physical sidelink feedback channel resource configuration apparatus provided by the embodiments of the present application;

[0028] Figure 9 is a second structure diagram of the physical sidelink feedback channel resource configuration apparatus provided by the embodiments of the present application;

[0029] Figure 10 is a structure diagram of a communication device provided by the embodiments of the present application;

[0030] Figure 11A hardware structure schematic diagram of a first communication device for implementing an embodiment of the present application;

[0031] Figure 12 A structure schematic diagram of the first communication device provided by the embodiment of the present application;

[0032] Figure 13 A hardware structure schematic diagram of a second communication device for implementing an embodiment of the present application;

[0033] Figure 14 A structure schematic diagram of the second communication device provided by the embodiment of the present application. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0035] The terms "first", "second", and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second" are generally of a kind, and are not limited to the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the front and rear associated objects are in an "or" relationship.

[0036] It is worth noting that the technology described in the embodiments of the present application is not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used in the above-mentioned systems and radio technologies, as well as in other systems and radio technologies. The following description describes a New Radio (NR) system for example purposes, and NR terminology is used in most of the following description, but these technologies can also be applied outside the NR system application, such as in a 6th Generation (6G) communication system. th

[0037] Figure 1 ​A structure diagram of a wireless communication system to which embodiments of the present application can be applied is shown. The wireless communication system includes a terminal 11 and a network side device 12. The terminal 11 can also be referred to as a terminal device or a user terminal (User Equipment, UE). The terminal 11 can be a terminal side device such as a mobile phone, a tablet personal computer, a laptop computer, a personal digital assistant (PDA), a palm computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile Internet device (MID), an augmented reality (AR) / virtual reality (VR) device, a robot, a wearable device, a vehicle-mounted device (VUE), a pedestrian terminal (PUE), a smart home (a home device with a wireless communication function, such as a refrigerator, a television, a washing machine, or furniture, etc.), and the like. The wearable device includes a smart watch, a smart bracelet, a smart earphone, smart glasses, smart jewelry (a smart bracelet, a smart necklace, a smart ring, a smart necklace, a smart anklet, a smart necklace, etc.), a smart wristband, smart clothing, a game console, and the like. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application. The network side device 12 can be a base station or a core network. The base station can be referred to as a node B, an evolved node B, an access point, a control node, a base transceiver station (BTS), a radio base station, a radio transceiver, a basic service set (BSS), an extended service set (ESS), a node B, an evolved node B (eNB), a home node B, a home evolved node B, a WLAN access point, a WiFi node, a transmitting receiving point (TRP), or some other appropriate terminology in the art, as long as the same technical effects are achieved. The base station is not limited to a specific technical term, and it should be noted that only a base station in an NR system is taken as an example in the embodiments of the present application, but the specific type of the base station is not limited.

[0038] There are two modes of NR SL resource allocation, one is base station scheduling (mode 1) and the other is UE autonomous resource selection (mode 2). For the base station scheduling resource allocation mode, the sidelink resource used by the UE for data transmission is determined by the base station and notified to the sending terminal TX UE through downlink signaling; for the UE autonomous resource selection resource allocation mode, the UE selects available transmission resources in the (pre) configured resource pool, and the UE performs channel listening before resource selection, selects a resource set with less interference according to the channel listening result, and then randomly selects a resource for transmission from the resource set.

[0039] For mode 2, the specific working mode is as follows: 1) After the resource selection is triggered, the TX UE first determines the resource selection window, the lower boundary of the resource selection window is T1 time after the resource selection trigger, and the upper boundary of the resource selection window is T2 time after the trigger, wherein T1 is selected in a range of [T1_min, T1_max] by the UE implementation, T2 is a value selected by the UE implementation within the packet delay budget PDB of the transport block (TB) transmission, and T2 is not earlier than T1. 2) Before the resource selection, the UE needs to determine a candidate resource set for resource selection, wherein the number of candidate resource sub-channels is determined by the media access control (MAC) layer, and the UE compares the estimated reference signal receiving power (RSRP) measurement value (for example, by listening to the physical sidelink control channel (PSCCH) / physical sidelink shared channel (PSSCH) estimation) of the resources in the resource selection window with the corresponding RSRP threshold, if the RSRP is higher than the RSRP threshold, the resource is excluded from the candidate resource set. The resources remaining in the resource selection window after the resource exclusion form the candidate resource set. The proportion of resources in the candidate resource set in the resources in the resource selection window is not less than x%, if it is less than x%, the RSRP threshold needs to be increased by a step value (3dB), and the resource exclusion operation is performed again, until not less than x% of the resources can be selected. In addition, the RSRP comparison is related to the priority of the TB to be transmitted and the priority value demodulated on the PSCCH, and the specific process is not described. 3) After the candidate resource set is determined, the UE randomly selects transmission resources in the candidate resource set, and the number of selected resources is determined according to the decision of the MAC layer. In addition, the UE can reserve transmission resources for the next transmission in this transmission.

[0040] In Rel-16 NR SL, the TX UE performs resource reservation / indication (reservation is divided into periodic reservation and aperiodic reservation) on the allocated resources, and the reserved resources are used for subsequent PSCCH / PSSCH transmission.

[0041] The non-periodic reservation / indication can be implemented by a time resource assignment field in sidelink control information (SCI) (at least indicating 1-32 slot resources), and the reserved resources can be used for transmission of the same TB at least.

[0042] The periodic reservation / indication can be implemented by a resource reservation period field in SCI, and the periodically reserved resources can be used for transmission of the next TB. Here, a certain frequency domain resource periodically appears, which can be referred to as the periodic resource of the resource.

[0043] For the sidelink resource selection enhancement scheme, interference detection or resource reservation collision detection can be performed at the receiving terminal RX UE or other terminal side. If it is detected that the resources reserved by the TX UE and the resources reserved by other UEs collide, signaling is sent to the TX UE to indicate triggering of resource reselection of the TX UE. Currently, the 3rd Generation Partnership Project (3GPP) has agreed to use physical sidelink feedback channel (PSFCH) channel resources to send signaling to trigger resource reselection of the TX UE, but specific ways of using PSFCH resources to indicate resource reselection, information content carried by resource reselection indication information, expression meaning, determination of resources occupied by resource reselection information, and resource multiplexing mode still need to be solved.

[0044] To solve the above problems, the present application provides a physical sidelink feedback channel resource configuration method to solve the problems of resource configuration of TX UE resource reselection triggering indication signaling, resource multiplexing, and the like.

[0045] The physical sidelink feedback channel resource configuration method, terminal, and network side device provided by the embodiments of the present application will be described in detail below in combination with some embodiments and their application scenarios.

[0046] Figure 2 One of the flowcharts of the physical sidelink feedback channel resource configuration method provided by the embodiments of the present application is shown in FIG. 1, and the method comprises the following steps. Figure 2

[0047] Step 200, the first communication device uses a physical sidelink feedback channel (PSFCH) resource to send first signaling to a second communication device according to a first rule, and the first signaling is used to instruct the second communication device to perform resource reselection.

[0048] ​It should be noted that in the embodiments of the present application, the first communication device can be a terminal, a control node or a network side device, and the second communication device can be a terminal, a control node or a network side device, wherein the control node can be a base station, a micro base station, a road test unit (RSU), a UE capable of scheduling, etc.

[0049] The second communication device is a data sending end device.

[0050] The first communication device can be a data receiving end device of the second communication device, or can not be a data receiving end device of the second communication device.

[0051] In some embodiments, the first rule includes at least one of the following:

[0052] The first communication device detects that the resource selected or reserved by the second communication device collides with the resource selected or reserved by the first communication device;

[0053] The first communication device detects that the resource selected or reserved by the third communication device collides with the resource selected or reserved by the second communication device;

[0054] The first communication device detects that the uplink transmission resource of the first communication device collides with the resource selected or reserved by the second communication device;

[0055] The first communication device detects that the uplink transmission resource of the third communication device collides with the resource selected or reserved by the second communication device;

[0056] The third communication device is another communication device other than the first communication device.

[0057] It can be understood that when the first communication device detects at least one of the above four resource collision situations, the first communication device sends the first signaling to the second communication device using the PSFCH resource, so as to trigger the second communication device to perform resource reselection.

[0058] It should be noted that in the embodiments of the present application, the resource collision includes at least one of the following:

[0059] The time domain resource partially or entirely overlaps;

[0060] The frequency domain resource partially or entirely overlaps.

[0061] In the sidelink PSFCH transmission of R16, one PSFCH carries only 1 bit of information, which expresses whether it is an ACKnowledgment (ACK) or a Non-ACKnowledgment (NACK), and each PSFCH transmission occupies one PRB. In terms of the content and expression of the signaling for indicating resource reselection, only 1 bit of information can be carried to indicate whether to retransmit. This approach has the advantage of very small signaling overhead, but the amount of information carried is small.

[0062] Of course, it is also possible to increase the signaling overhead by a certain amount, for example, by 1-2 bits, and the retransmission indication carries some other information, such as the detected collision type, the necessity of reselection, etc. In the case of not much increase in signaling overhead, it can effectively help the second communication device to perform necessary resource reselection and avoid unnecessary resource reselection, thereby improving the efficiency of resource reselection and avoiding excessive reselection overhead.

[0063] The embodiments of the present application define the information content of the first signaling indication.

[0064] The first signaling carries an indication of one of the following information:

[0065] Information on whether to perform resource reselection;

[0066] Collision type information of resource collision;

[0067] Position information of resource collision;

[0068] Time-sensitive characteristic information of resource collision;

[0069] Collision overlap degree information of at least one collided resource;

[0070] Transmission type information of resource collision;

[0071] Necessity degree information of resource reselection;

[0072] Quantity or proportion information of resource collision;

[0073] Business priority information corresponding to the resource causing the collision;

[0074] Resource reselection priority information.

[0075] In an implementation, resource reselection information and resource non-reselection information can be indicated by two code points, respectively.

[0076] Optionally, the collision type information of the resource collision includes at least one of the following:

[0077] a collision caused by the resource selected or reserved by the second communication device and the resource selected or reserved by the third communication device being partially or fully overlapped;

[0078] a collision caused by the PSFCH resource associated with the resource selected or reserved by the second communication device and the PSFCH resource associated with the resource selected or reserved by the third communication device;

[0079] a collision caused by the resource selected or reserved by the second communication device and the resource selected or reserved by the third communication device;

[0080] a collision caused by the PSFCH resource associated with the resource selected or reserved by the second communication device and the PSFCH resource associated with the resource selected or reserved by the third communication device;

[0081] a collision caused by the resource selected or reserved by the second communication device and the uplink transmission resource of the third communication device being partially or fully overlapped; wherein the collision is a half-duplex type resource collision caused by the resource selected or reserved by the second communication device and the uplink transmission resource of the third communication device being in the same time slot or subframe, and the third communication device needing to send uplink data transmission in the time slot or subframe, thus being unable to receive the data sent by the second communication device;

[0082] a collision caused by the PSFCH resource associated with the resource selected or reserved by the second communication device and the uplink transmission resource of the third communication device being partially or fully overlapped; wherein the collision is a half-duplex type resource collision caused by the PSFCH resource associated with the resource selected or reserved by the second communication device and the uplink transmission resource of the third communication device being in the same time slot or subframe, and the third communication device needing to send uplink data transmission in the time slot or subframe, thus being unable to feed back HARQ to the second communication device;

[0083] a collision caused by the resource selected or reserved by the second communication device and the resource selected or reserved by the first communication device for sidelink (SL) transmission being partially or fully overlapped;

[0084] a collision caused by the resource selected or reserved by the second communication device and the resource position of the uplink, UL, transmission of the first communication device partially or totally overlapping; wherein the collision is a half-duplex type resource collision caused by the resource selected or reserved by the second communication device being in the same time slot or subframe as the uplink transmission resource of the first communication device, and the first communication device needing to transmit uplink data transmission in the time slot or subframe, thus being unable to receive data transmitted by the second communication device;

[0085] a collision caused by the PSFCH resource associated with the resource selected or reserved by the second communication device and the resource selected or reserved by the first communication device;

[0086] a collision caused by the PSFCH resource associated with the resource selected or reserved by the second communication device and the PSFCH resource associated with the resource selected or reserved by the first communication device; wherein the collision is a half-duplex type resource collision caused by the PSFCH resource associated with the resource selected or reserved by the second communication device being in the same time slot or subframe as the PSFCH resource associated with the resource selected or reserved by the first communication device, and the first communication device needing to receive HARQ feedback of other communication devices on the PSFCH of the time slot or subframe, thus being unable to feed back HARQ to the second communication device;

[0087] a collision caused by the PSFCH resource associated with the resource selected or reserved by the second communication device and the uplink, UL, transmission resource of the first communication device; wherein the collision is a half-duplex type resource collision caused by the PSFCH resource associated with the resource selected or reserved by the second communication device being in the same time slot or subframe as the uplink transmission resource of the first communication device, and the first communication device needing to transmit uplink data transmission in the time slot or subframe, thus being unable to feed back HARQ to the second communication device;

[0088] a collision caused by the resource selected or reserved by the second communication device and the PSFCH resource associated with the resource selected or reserved by the first communication device.

[0089] It should be noted that the above twelve types of collisions can be summarized into two types, one is that the resource reserved or selected by the second communication device is occupied by other communication devices, i.e., a collision caused by the resource selected or reserved by the second communication device partially or totally overlapping with the resource selected or reserved by the other communication device; the other is a half-duplex collision caused by the resource reserved or selected by the second communication device, or the PSFCH resource associated with the resource reserved or selected by the second communication device, and the transmission or reception behavior of other communication devices.

[0090] Optionally, the position information of the resource collision includes at least one of the following:

[0091] part / all of the N / th K resources in the periodically reserved resources;

[0092] Mth resource in the N / th K resources in the periodically reserved resources;

[0093] Mth resource in the N / th K resources in the periodically reserved resources;

[0094] Mth resource in the non-periodically reserved resources;

[0095] all / part of the resources in the non-periodically reserved resources;

[0096] Mth resource in the non-periodically reserved resources;

[0097] wherein, N, K, M are positive integers.

[0098] Optionally, the time-effectiveness information of the resource collision comprises at least one of the following:

[0099] resource collision exists in the Pth period in the periodically reserved resources;

[0100] resource collision exists in the first P periods in the periodically reserved resources;

[0101] resource collision exists in the last P periods in the periodically reserved resources;

[0102] collision exists in the first preset time length after the current time in the periodically reserved resources;

[0103] collision exists in the first preset time length after the current time in the non-periodically reserved resources;

[0104] resource collision exists in the first Q reserved resources in the non-periodically reserved resources;

[0105] resource collision exists in the last Q reserved resources in the non-periodically reserved resources;

[0106] resource collision exists in the Qth reserved resource in the non-periodically reserved resources;

[0107] wherein, P, Q are positive integers.

[0108] For example, for the periodic reservation scenario, two or three resources can be reserved in a unit period. If the first communication device detects that the second communication device reserves a period resource that collides with the resources reserved by other communication devices, but the resources reserved in the second period or future periods are too far from the current time, although the collision can be detected at present, with the change of the channel, the situation at that time is not very clear, so the corresponding collision D resources in the nearest P periods can be only indicated for reselection, and other resources are not reselected. As shown in FIG. 8, which is one of the schematic diagrams for indicating resource collision provided by the embodiments of the present application, the second resource in a period is detected to have resource collision, and only the second resource in the nearest period is indicated for resource reselection. Figure 3

[0109] Optionally, the collision overlap degree information of the at least one collided resource includes at least one of the following:

[0110] partial overlap or full overlap;

[0111] the number of overlapping subchannels, slots, PRBs or symbols;

[0112] the proportion of overlapping resources in the total amount of resources reserved by the second communication device;

[0113] the proportion of overlapping resources in the current collided resources reserved by the second communication device.

[0114] Optionally, the transmission type information of the resource collision includes at least one of the following:

[0115] the collided resource is used for unicast transmission or groupcast transmission or broadcast transmission;

[0116] the collided resource is used for sending data to a specific communication device or a specific group;

[0117] the collided resource is used for sending data to a control node.

[0118] Optionally, the necessity degree information of the resource reselection includes at least one of the following:

[0119] must or suggest to need or suggest not to need or not to need resource reselection;

[0120] a weight coefficient, which is used to indicate the necessity degree of resource reselection.

[0121] In an implementation, the weight coefficient is represented by a user percentage, and the higher the percentage, the higher or lower the necessity of resource reselection.

[0122] ​Optionally, the number or proportion information of the resource collision comprises at least one of the following:

[0123] a number of the resources causing collision; wherein the number of the resources causing collision comprises a number of time slots or a number of sub-channels or a number of symbols or a number of physical resource blocks;

[0124] a proportion of the resources causing collision in a total number of the reserved resources of the second communication device or a proportion of the resources causing collision in a total number of the reserved resources in at least one period within the second preset time period;

[0125] a number of the resources causing collision within a second preset time period;

[0126] a proportion of the resources causing collision within the second preset time period in a total number of the reserved resources of the second communication device within the second preset time period or a proportion of the resources causing collision within the second preset time period in a total number of the reserved resources in at least one period within the second preset time period;

[0127] wherein the total number of the reserved resources comprises a total number of time slots or a total number of sub-channels or a total number of symbols or a total number of physical resource blocks.

[0128] Optionally, the service priority information corresponding to the resources causing collision comprises at least one of the following:

[0129] service priority information of a conflict source device corresponding to the resources causing collision;

[0130] a difference or an absolute value of the difference between the service priority of the second communication device and the service priority of the conflict source device on the resources causing collision;

[0131] a relationship between the service priority of the second communication device and the service priority of the conflict source device on the resources causing collision;

[0132] wherein the conflict source device is the first communication device or the third communication device.

[0133] For example, it can be indicated that the service priority of the second communication device is lower / higher / equal to the priority of the conflict source device on the resources causing collision.

[0134] Optionally, the resource reselection priority information can comprise a priority coefficient or a priority weight.

[0135] It should be noted that the information content carried by the above-mentioned first signaling provided by the embodiments of the present application can be used alone or in combination.

[0136] In the embodiments of the present application, the PSFCH transmission resource reselection indication signaling can effectively help the second communication device to perform necessary resource reselection, avoid unnecessary resource reselection, improve the efficiency of resource reselection, improve the transmission efficiency in the sidelink system, and improve the system performance.

[0137] The PSFCH has a fixed association with a physical sidelink control channel (PSCCH) / physical sidelink shared channel (PSSCH), and the transmission flexibility of the PSFCH is limited. Therefore, the PSFCH resources that can be determined cannot be used for resource reselection indication.

[0138] In addition, there may be a case where multiple communication devices simultaneously send resource reselection indications, and therefore, the configuration method of the PSFCH resource used for resource reselection indication transmission needs to be specified.

[0139] Optionally, before the step 200, the method further includes:

[0140] Determining the time-frequency domain resource of the PSFCH resource.

[0141] The following describes a configuration method of a PSFCH resource for resource reselection indication transmission provided by the embodiments of the present application.

[0142] I. Time domain resource of PSFCH

[0143] Optionally, the PSFCH resource occupies one or two symbols in the time domain.

[0144] In the case where the PSFCH resource occupies two symbols in the time domain, the resources on each symbol are used to transmit different information.

[0145] In some embodiments, the time domain resource position of the PSFCH resource is determined according to at least one of the following methods:

[0146] Method one: determining the time domain resource position of the PSFCH resource according to a first time slot / subframe in which sidelink control information (SCI) sent by the second communication device for indicating the reserved resource is located.

[0147] The determination of the time domain resource position of the PSFCH resource according to the first time slot / subframe in which the SCI sent by the second communication device for indicating the reserved resource is located includes at least one of the following:

[0148] in a case where the first PSFCH resource exists in the first time slot / subframe, determining to use the first PSFCH resource to transmit the first signaling;

[0149] in a case where the first PSFCH resource does not exist in the first time slot / subframe, using a PSFCH resource closest to the first time slot / subframe to transmit the first signaling;

[0150] using a PSFCH resource in an Lth time slot / subframe after the first time slot to transmit the first signaling;

[0151] using a PSFCH resource closest to an Lth time slot / subframe after the first time slot to transmit the first signaling; wherein the closest PSFCH resource is before or after the Lth time slot / subframe after the first time slot;

[0152] using at least one PSFCH resource within a third preset time length after the first time slot to transmit the first signaling;

[0153] wherein L is a positive integer.

[0154] wherein the SCI sent by the second communication device to indicate the reserved resource can be understood as the SCI used to indicate the reserved resource of the second communication device.

[0155] For example, in a case where the first communication device detects that the SCI sent by the second communication device indicates the reserved resource, and there is a collision with the resource reserved by another communication device, only a slot in which the first or second resource reserved by the second communication device is used to select a block of resource in the PSFCH channel closest to it to transmit the reselection indication information, as shown in Figure 4 which is a second schematic diagram for indicating resource collision provided by an embodiment of the present application.

[0156] Mode two: determining a time domain resource position of the PSFCH resource according to a second time slot / subframe in which the resource reserved by the second communication device collides.

[0157] The determining the time domain resource position of the PSFCH resource according to the second time slot / subframe in which the resource reserved by the second communication device collides includes at least one of the following:

[0158] transmitting the first signaling on a PSFCH resource before U time slots / subframes of the second time slot in which at least one of the resources collides or within a fourth preset time length;

[0159] transmitting the first signaling on a PSFCH resource closest to the second time slot in which at least one of the resources collides;

[0160] transmit the first signaling on a PSFCH resource closest to H time slots / subframes before a second time slot where at least one of the collided resources is located before the collision;

[0161] select X PSFCH resources as second PSFCH resources on PSFCH resources on R time slots / subframes before a second time slot where at least one of the collided resources is located before the collision or within a fifth preset time length, and transmit the first signaling on the second PSFCH resources;

[0162] wherein U, H, R, and X are positive integers.

[0163] It can be understood that the slots where the collided resources are located respectively correspond to PSFCH resources, and the PSFCH resources are in N slots before the slots where the collided resources are located or a period of time before the collision, and a reselection indication is transmitted on the corresponding PSFCH before the collision. Alternatively, the slots where the collided resources are located respectively correspond to PSFCH resources, and one PSFCH resource is selected from the PSFCH resources, and a reselection indication is transmitted on the corresponding PSFCH before the collision.

[0164] For determining the PSFCH transmission resource according to the slot where the collided resource reserved by the second communication device is located, if all the collided resources correspond to a PSFCH transmission, the overhead of PSFCH transmission will also increase in the case of a large number of collisions, so the transmission of the reselection indication on the PSFCH resource corresponding to some specific collided resources can be considered. For example, in the PSFCH channel closest to the slot where the first collided resource is located, a resource is selected for the transmission of the resource reselection indication, as shown in FIG. 3, which is a third schematic diagram for indicating resource collision provided by an embodiment of the present application. Figure 5

[0165] Method three: determining the time domain resource location of the PSFCH resource according to a third time slot / subframe where a resource reserved by the second communication device and not collided is located.

[0166] The determining the time domain resource location of the PSFCH resource according to a third time slot / subframe where a resource reserved by the second communication device and not collided is located includes:

[0167] determining the earliest collided resource among all the collided resources, and determining T reserved resources closest to the earliest collided resource;

[0168] ​determining a third PSFCH resource according to a time slot / subframe where the T reserved resources are located, wherein the third PSFCH resource is in the time slot where the T reserved resources are located, or the third PSFCH resource is in a time slot / subframe before the time slot / subframe where the T reserved resources are located, or the third PSFCH resource is in a time slot / subframe after the time slot / subframe where the T reserved resources are located;

[0169] transmitting the first signaling in the third PSFCH resource;

[0170] wherein T is a positive integer.

[0171] For example, all the resources that occur collision are determined, the earliest resource that occurs collision is determined, the nearest one or more reserved resources before the resource are found, the PSFCH resource is determined according to the slot where the resources are located, the PSFCH resource is in the slot, but if there is no PSFCH configured in the slot, the PSFCH resource can be determined in the slot before or after the slot.

[0172] II. Frequency domain resource of PSFCH

[0173] The following describes a method for determining the frequency domain resource position of PSFCH.

[0174] In some embodiments, the frequency domain resource position of the PSFCH resource is determined according to at least one of the following manners:

[0175] Manner one: determining the frequency domain resource position of the PSFCH resource according to SCI sent by the second communication device for indicating the reserved resource.

[0176] The determining the frequency domain resource position of the PSFCH resource according to the SCI sent by the second communication device for indicating the reserved resource comprises:

[0177] taking the starting or ending or center frequency domain resource of the SCI as a reference point to determine the frequency domain resource position of the PSFCH resource.

[0178] Manner two: determining the frequency domain resource position of the PSFCH resource according to a physical sidelink shared channel (PSSCH) associated with the SCI sent by the second communication device for indicating the reserved resource.

[0179] The determining the frequency domain resource position of the PSFCH resource according to the PSSCH associated with the SCI sent by the second communication device for indicating the reserved resource comprises:

[0180] taking the starting or ending or center frequency domain resource of the PSSCH as a reference point to determine the frequency domain resource position of the PSFCH resource.

[0181] It can be understood that the first communication device determines the frequency domain resource position of the PSFCH by taking the starting frequency domain resource position, or the ending frequency domain resource, or the center frequency domain resource of the PSSCH associated with the SCI indicating the reserved resource of the second communication device as a reference point.

[0182] Optionally, the method further comprises:

[0183] Optionally, the method further comprises:

[0184] Optionally, the method further comprises:

[0185] Optionally, the method further comprises:

[0186] Optionally, the method further comprises:

[0187] Optionally, the method further comprises:

[0188] Optionally, the method further comprises:

[0189] Optionally, the method further comprises:

[0190] Optionally, the method further comprises:

[0191] The number of frequency domain resources of the PSFCH is introduced as follows.

[0192] In some embodiments, the PSFCH resource occupies one or more PRBs in the frequency domain.

[0193] In some embodiments, in the case that the PSFCH resource occupies one PRB in the frequency domain, at least one of the following is satisfied:

[0194] (1) Each code point of the first signaling corresponds to at least one information meaning, each information meaning corresponds to at least one M_CS value, and each M_CS value corresponds to a cyclic prefix index value / cyclic prefix, for example, each M_CS value corresponds to a collision type or a collision state or a collision position; the first interval between the cyclic prefix index values / cyclic prefixes corresponding to each M_CS value is the same, and the first interval is configured by the network side / high layer;

[0195] (2) A default code point configured by the network side / high layer is obtained to serve as a reference code point for demodulating the first signaling, the reference code point corresponds to a default state, and the reference code point corresponds to a configured M_CS value;

[0196] (3) The network side / high layer is configured to obtain the number of first signaling transmissions or the number of PSFCHs supported by each PRB for transmission by the same communication device;

[0197] (4) The network side / high layer is configured to obtain the number of cyclic prefix pairs supported by each PRB;

[0198] (5) The network side / high layer is configured to obtain the number of first signaling transmissions or the number of PSFCH transmissions supported by each PRB;

[0199] (6) The network side / high layer is configured to obtain the starting index value of the cyclic prefix pair corresponding to each PRB;

[0200] (7) The network side / high layer is configured to obtain the number of communication devices supported by each PRB for sending the first signaling.

[0201] It should be noted that, for the first signaling sent by the same communication device on each PRB, each code point corresponds to an M_CS value, each M_CS value corresponds to a cyclic prefix index value / cyclic prefix, and the cyclic prefix index values / cyclic prefixes corresponding to these M_CS values belong to the same cyclic prefix pair.

[0202] It should also be noted that the same communication device can send multiple first signaling at the same time on the PSFCH resource, and each first signaling carries different information;

[0203] It should be further noted that the information acquisition methods in (1)-(7) above can be obtained by network side / high layer configuration, and can also be obtained by protocol predefinition, control node notification, terminal notification or sharing, and the signaling obtained can be Radio Resource Control (RRC) / Downlink Control Information (DCI) / SCI / Media Access Control Control Element (MAC CE) / Sidelink Feedback Control Information (SFCI) and the like. After the first communication device obtains these information, it can select the resource in the PSFCH based on these information to transmit the first signaling.

[0204] For the case that the reselection indication sent by each first communication device occupies 1 PRB, the following examples are used for specific description:

[0205] Assuming that the reselection indication only carries 1 bit of information, corresponding to two code points and two states. Assuming that the number of PSFCHs that can be multiplexed in one PRB is 6, then 6 cyclic prefix pairs can be configured, each corresponding to the PSFCH transmission of one user. Then the cyclic prefix pair index value corresponding to each PSFCH can be: 0 / 6, 1 / 7, 2 / 8, 3 / 9, 4 / 10, 5 / 11. In this way, not only the interval of the cyclic prefix index value corresponding to the PSFCH of the same user is the same, but also the interval of the cyclic prefix index value corresponding to the PSFCH of different users is the same. Optionally, a default state can be configured in each cyclic prefix pair, for example, the cyclic prefix pair index value 6 / 7 / 8 / 9 / 10 / 11 corresponds to a default state, i.e. a state that will not be transmitted by any PSFCH, which can correspond to not performing resource reselection.

[0206] When the reselection indication only carries 2-bit information, corresponding to three code points and three states, assuming that the number of PSFCHs that can be multiplexed in one PRB is 4, 4 cyclic prefix sets can be configured, and each cyclic prefix set corresponds to the PSFCH transmission of one user. Then the cyclic prefix set index value corresponding to each PSFCH can be: 0 / 4 / 8, 1 / 5 / 9, 2 / 6 / 10, 3 / 7 / 11. In this way, not only the interval of the cyclic prefix index value corresponding to the PSFCH of the same user is the same, but also the interval of the cyclic prefix index value corresponding to the PSFCH of different users is the same. Optionally, a default state can be configured in each cyclic prefix set, for example, the cyclic prefix pair index value 8 / 9 / 10 / 11 corresponds to a default state, that is, a state that is not transmitted by any PSFCH, which can correspond to not performing resource reselection.

[0207] When the reselection indication only carries 2-bit information, corresponding to four code points and four states, assuming that the number of PSFCHs that can be multiplexed in one PRB is 3, 3 cyclic prefix sets can be configured, and each cyclic prefix set corresponds to the PSFCH transmission of one user. Then the cyclic prefix pair index value corresponding to each PSFCH can be: 0 / 5 / 9, 1 / 6 / 10, 2 / 7 / 11. In this way, not only the interval of the cyclic prefix index value corresponding to the PSFCH of the same user is the same, but also the interval of the cyclic prefix index value corresponding to the PSFCH of different users is the same. Optionally, a default state can be configured in each cyclic prefix set, Figure 6 A state configuration diagram in the cyclic prefix set provided by the embodiments of the present application is provided. For example, the cyclic prefix pair index value 9 / 10 / 11 corresponds to a default state, that is, a state that is not transmitted by any PSFCH, which can correspond to not performing resource reselection.

[0208] In some embodiments, in the case where the PSFCH resource occupies a plurality of PRBs in the frequency domain, at least one of the following is satisfied:

[0209] (1) Each code point of the first signaling corresponds to at least one information meaning, each information meaning corresponds to at least one M_CS value, and each M_CS value corresponds to a cyclic prefix index value / cyclic prefix; for example, each M_CS value corresponds to a collision type or a collision state or a collision position;

[0210] (2) Each PRB is associated with at least one code point;

[0211] (3) The information carried by each PRB is different, and each PRB is associated with at least one indication information;

[0212] (4) The number of first signaling or PSFCHs supported by the same communication device transmission per W PRBs configured by the network side / high layer is obtained.

[0213] (5) Obtain the number of cyclic prefix pairs supported by each W PRB configured by the network side / high layer;

[0214] (6) Obtain the number of first signaling transmissions or PSFCH transmission supported by each W PRB configured by the network side / high layer;

[0215] (7) Obtain the starting index value of the cyclic prefix pair corresponding to each W PRB configured by the network side / high layer;

[0216] (8) Obtain the number of communication devices supporting the transmission of the first signaling by each W PRB configured by the network side / high layer;

[0217] (9) The second interval between the cyclic prefix index value / M_CS value corresponding to the cyclic prefix on the same PRB is the same, and the second interval is configured by the network side / high layer;

[0218] (10) Obtain a default code point configured by the network side / high layer as a reference code point for demodulating the first signaling, wherein the reference code point corresponds to a default state, and the reference code point corresponds to a configured M_CS value.

[0219] Wherein, W is a positive integer.

[0220] It should be noted that each code point corresponds to an M_CS value when the same communication device transmits the first signaling on each PRB, and each M_CS value corresponds to a cyclic prefix index value / cyclic prefix. The cyclic prefix index values / cyclic prefixes corresponding to these M_CS values belong to the same cyclic prefix pair.

[0221] It should be further noted that the same communication device can simultaneously transmit multiple first signaling on the PSFCH resource, and each first signaling carries different information.

[0222] It should be further noted that the information acquisition method in the above (1)-(10) can be obtained by network side / high layer configuration, and can also be obtained by protocol predefinition, control node notification, terminal notification or sharing. The acquired signaling can be RRC / DCI / SCI / MAC CE / SFCI, etc.

[0223] For the case that the reselection indication sent by each first communication device occupies N PRBs, each first communication device sends a reselection indication occupying N PRBs, and each PRB corresponds to a code point state. Assuming that the reselection indication only carries 2 bits of information, corresponding to three code points and three states, the number of PRBs occupied is three, and each PRB corresponds to a code point state. Assuming that the number of PSFCHs that can be multiplexed in one PRB is 6, then 6 cyclic prefix pairs can be configured, and each cyclic prefix pair corresponds to the PSFCH transmission of one user. Then the cyclic prefix pair index value corresponding to each PRB of each PSFCH can be: 0 / 6, 1 / 7, 2 / 8, 3 / 9, 4 / 10, 5 / 11. Optionally, a default state can be configured in each cyclic prefix pair, for example, the cyclic prefix pair index values 6 / 7 / 8 / 9 / 10 / 11 correspond to a default state, that is, the PRB corresponding state is no indication information of the corresponding state is received.

[0224] The multiplexing mode of the PSFCH resource is introduced below.

[0225] Optionally, the multiplexing mode of the PSFCH resource includes at least one of the following:

[0226] Frequency division multiplexing (FDM);

[0227] Code division multiplexing;

[0228] Time division multiplexing (TDM).

[0229] Optionally, the frequency division multiplexing satisfies at least one of the following:

[0230] Each communication device uses different PRBs on the PFSCH when transmitting the first signaling;

[0231] The PRBs used by different communication devices when transmitting the first signaling are continuous or discrete on the PSFCH.

[0232] Optionally, the code division multiplexing satisfies at least one of the following:

[0233] The first signaling transmission or the PSFCH transmission of multiple communication devices is multiplexed on the same PRB or multiple PRBs;

[0234] Obtain the number of cyclic prefix pairs corresponding to every V PRBs configured by the network side / high layer;

[0235] Obtain the number of first signaling transmissions or the number of PSFCH transmissions from different communication devices supported by every V PRBs configured by the network side / high layer;

[0236] obtaining a cyclic prefix pair starting index value corresponding to a code point of the first signaling of each different communication device per V PRBs configured by the network side / high layer;

[0237] obtaining a M_CS value corresponding to a code point of the first signaling of each different communication device per V PRBs configured by the network side / high layer, each M_CS value corresponding to a cyclic prefix index value; the M_CS values corresponding to the code points of the first signaling of the same communication device come from the same cyclic prefix pair;

[0238] obtaining a number of communication devices supporting sending the first signaling per V PRBs configured by the network side / high layer;

[0239] a third interval between the cyclic prefix index values / M_CS corresponding to different communication devices per V PRBs remains the same, and the third interval is configured by the network side / high layer;

[0240] wherein V is a positive integer.

[0241] It should be further noted that the above information can be obtained by high layer / network configuration, or can be obtained by protocol predefinition, control node notification, terminal notification or sharing, and the obtained signaling can be RRC / DCI / SCI / MAC CE / SFCI, etc.

[0242] Optionally, the time division multiplexing manner satisfies at least one of the following:

[0243] the first signaling of different communication devices is transmitted using resources on different symbols;

[0244] the first signaling of the same communication device is transmitted using resources on multiple symbols, and the information transmitted on each symbol is different; for example, the collision type is carried on symbol #1, and the position information of the collided resource is carried on symbol #2.

[0245] the first signaling of the same communication device is transmitted using resources on multiple symbols, and the information transmitted on each symbol is the same.

[0246] It should be noted that the above various multiplexing manners can be combined.

[0247] The information carried in the first signaling sent by each first communication device can be one or multiple. For example, the collision type information and the position information of the resource collision can be carried, or the information whether to perform resource reselection, the collision type information of the resource collision and the position information of the resource collision can be carried, and the combination forms can be various. The resource occupation of them can be in the following manners:

[0248] Case1: multiple indication information are multiplexed on the same PRB for transmission;

[0249] Case2: multiple indication information are multiplexed in FDM form on multiple PRBs for transmission, each PRB carrying only one kind of information;

[0250] Case3: multiple indication information are multiplexed in TDM form on multiple symbol resources, each symbol carrying at least one kind of information;

[0251] Case4: multiple indication information are multiplexed in FDM and TDM forms on multiple PRBs of multiple symbols.

[0252] The above multiplexing modes can be obtained in the form of protocol predefinition, high layer or network side configuration, base station or terminal notification.

[0253] In the embodiments of the present application, different communication devices can be selected to be multiplexed in the frequency domain or the time domain, i.e., using different PRB resources for transmission in the frequency domain or using different symbol resources for transmission in the time domain, to avoid interference between different communication devices; if there are many communication devices, code division multiplexing can be considered, i.e., multiplexing reselection information transmission of multiple communication devices on the same resource, which can effectively reduce resource overhead, is flexible in configuration, can be used for more communication devices to send reselection signaling, and increases the system capacity.

[0254] In some embodiments, the sequence length of the PSFCH resource or the sequence length of the PSFCH transmission or the sequence length of the first signaling transmission is determined by one of the following;

[0255] The number of code points or indication states corresponding to the first signaling transmission;

[0256] The number of code points or indication states corresponding to the multiplexing of the first signaling transmission of multiple communication devices on Y PRBs;

[0257] The number of code points corresponding to the transmission of the first signaling on at least one PRB;

[0258] The number of code points or indication states corresponding to the multiplexing of the first signaling transmission of multiple user devices on Y PRBs on at least one PRB;

[0259] Wherein, Y is a positive integer.

[0260] In some embodiments, the configuration mode of the PSFCH resource includes at least one of the following:

[0261] Configured in resource pool units;

[0262] Configured in BWP units;

[0263] Configured in system bandwidth unit;

[0264] Configured independently for one or more transmission types;

[0265] For example, for groupcast communication, since the second communication device needs to demodulate multiple different PSFCH code points (e.g. different code points correspond to different types of collisions) sent by multiple first communication devices, a reference code point needs to be set to demodulate the multiple PSFCH code points sent by the multiple first communication devices.

[0266] For example, for unicast communication, since the second communication device needs to demodulate one PSFCH code point sent by one first communication device, a reference code point does not need to be set to demodulate the PSFCH code point.

[0267] Configured uniformly for multiple transmission types, and the state interpretation of the PSFCH resource needs to be defined independently for one or more transmission types;

[0268] For example, for unicast communication, state 1 represents resource collision type 1, and state 2 represents resource collision type 2; and for groupcast communication, state 1 represents resource collision, and state 2 is a reference code point for PSFCH demodulation.

[0269] Configured independently for resource collision types; for example, one PSFCH resource is configured for collisions caused by half-duplex factors, and one PSFCH resource is configured for collisions caused by partial / total overlap of resource reservations or selections by communication devices.

[0270] The benefits of configuring PSFCH resources for resource reselection indication transmission independently for resource collision types include:

[0271] Benefit 1: When the available PSFCH state values / code points are insufficient to indicate all resource collision types, independently configuring PSFCH resources for one or more resource collision types helps to expand the indication capacity of PSFCH;

[0272] Benefit 2: For groupcast communication, if multiple PSSCH receiving end UEs send the same PSFCH state (code point) to indicate a certain resource collision type, the accumulated energy on the PSFCH state will affect the demodulation of other PSFCH states (code points). In order to enable multiple receivers to indicate different resource collision types respectively, different resource collision types can correspond to different PSFCH resources (e.g. PSFCH resources located on different PRBs).

[0273] Among them, the resource collision type satisfies at least one of the following:

[0274] Different PSSCH resources reserved by the second communication device correspond to different resource collision types, as described above.

[0275] Different resource collision types detected by the first communication device, or different types of collision determination methods of the first communication device (such as PSSCH collision conflict, Half Duplex (HD) collision on the UE-A side, etc.) correspond to different resource collision types.

[0276] Independent configuration for HARQ feedback mode type, where the HARQ feedback mode includes ACK / NACK feedback mode, only NACK feedback mode, and blind retransmission mode without ACK / NACK feedback.

[0277] It can be understood that the configuration granularity of the PSFCH resource for resource reselection indication transmission described above can be configured in units of resource pool, configured in units of BWP, configured in units of system bandwidth, independently configured for one or more transmission types, uniformly configured for multiple transmission types, and the state interpretation of the PSFCH resource needs to be independently defined for a certain transmission type or certain transmission types, independently configured for resource collision type, or independently configured for HARQ feedback mode type.

[0278] Definition of PSFCH demodulation reference code point:

[0279] Set one / multiple PSFCH demodulation reference code points for each PSFCH resource, and the UE does not send messages at the code point.

[0280] Configure one / multiple PSFCH demodulation reference states (such as reference code points) in the system (such as each resource pool), and first exclude these reference states when configuring PSFCH.

[0281] Set one / multiple reference PSFCH resources for PSFCH demodulation

[0282] Optionally, the reference PSFCH resource is explicitly configured, and the configuration signaling indicates the PSFCH resource; or the protocol agrees that a certain PSFCH resource is the reference PSFCH resource

[0283] Optionally, when the communication device determines the PSFCH resource for PSFCH transmission, the reference PSFCH resource is first removed.

[0284] It should be noted that the content carried by the above resource reselection indication signaling (first signaling) and the expression meaning, the configuration mode of the PSFCH resource used for resource reselection indication transmission, the value of each variable can be configured by the network side / base station, or notified by the control node / terminal, or predefined by the protocol, and the configuration or notification mode can be carried by RRC / SCI / DCI / MAC CE / SFCI, etc.

[0285] In particular, in some specific resource pools or BWP or specific bandwidths, no PSFCH resource can be configured for transmitting the resource reselection indication signaling (first signaling).

[0286] In the embodiments of the present application, the content carried by the PSFCH resource for transmitting the resource reselection indication signaling, the expression meaning, the PSFCH resource configuration mode, and the PSFCH resource multiplexing mode are given, the resource position, the number, and the multiplexing mode occupied by the at least one first communication device when transmitting the resource reselection indication signaling can be determined, the problem of transmitting the resource reselection indication by using the PSFCH can be effectively solved, the transmission efficiency in the sidelink system can be improved, the signaling overhead can be saved, and the system performance can be improved.

[0287] Figure 7 The second flowchart of the physical sidelink feedback channel resource configuration method provided in the embodiments of the present application is shown in FIG. 7B. Figure 7 As shown in FIG. 7B, the physical sidelink feedback channel resource configuration method includes the following steps.

[0288] Step 700, a second communication device receives first signaling on a physical sidelink feedback channel (PSFCH) resource, wherein the first signaling is used to instruct the second communication device to perform resource reselection.

[0289] The first signaling carries an indication of the following information:

[0290] Whether to perform resource reselection information;

[0291] Collision type information of resource collision;

[0292] Position information of resource collision;

[0293] Time-sensitive characteristic information of resource collision;

[0294] Collision overlap degree information of at least one collided resource;

[0295] Transmission type information of resource collision;

[0296] Necessity degree information of resource reselection;

[0297] Number or proportion information of resource collision;

[0298] The information of the priority of the service corresponding to the resource causing the collision;

[0299] The resource reselection priority information.

[0300] The embodiment is described from the second communication device as the execution subject, and the opposite end action of the foregoing embodiment is described, and therefore, the same content as the foregoing embodiment in the embodiment can be understood with reference to the description in the foregoing embodiment, and will not be described herein.

[0301] It can be understood that the second communication device receives the first signaling transmitted by the first communication device on the PSFCH resource, and the first signaling is used to instruct the second communication device to perform resource reselection.

[0302] The second communication device performs resource reselection according to the information indicated by the first signaling.

[0303] In the embodiment of the application, the PSFCH transmission resource reselection indication signaling can effectively help the second communication device to perform necessary resource reselection, avoid unnecessary resource reselection, improve the efficiency of resource reselection, improve the transmission efficiency in the sidelink system, and improve the system performance.

[0304] In some embodiments, the PSFCH resource occupies one or two symbols in the time domain;

[0305] In the case where the PSFCH resource occupies two symbols in the time domain, the resources on each symbol are used to transmit different information.

[0306] In some embodiments, the PSFCH resource occupies one or more PRBs in the frequency domain.

[0307] In some embodiments, in the case where the PSFCH resource occupies one PRB in the frequency domain, at least one of the following is met:

[0308] Each code point of the first signaling corresponds to at least one information meaning, each information meaning corresponds to at least one M_CS value, each M_CS value corresponds to a cyclic prefix index value / cyclic prefix, the first interval between the cyclic prefix index values / cyclic prefixes corresponding to each M_CS value is the same, and the first interval is configured by the network side / high layer;

[0309] A default code point configured by the network side / high layer is obtained as a reference code point for demodulating the first signaling, the reference code point corresponds to a default state, and the reference code point corresponds to a configured M_CS value;

[0310] The number of first signaling transmissions or the number of PSFCHs supported by the same communication device for each PRB configured by the network side / high layer is obtained;

[0311] The number of cyclic prefix pairs supported by each PRB is obtained through network side / high layer configuration;

[0312] The number of first signaling transmissions or the number of PSFCH transmissions corresponding to each PRB is obtained through network side / high layer configuration;

[0313] The starting index value of the cyclic prefix pair corresponding to each PRB is obtained through network side / high layer configuration;

[0314] The number of communication devices supporting the transmission of the first signaling corresponding to each PRB is obtained through network side / high layer configuration.

[0315] In some embodiments, in the case where the PSFCH resource occupies multiple PRBs in the frequency domain, at least one of the following is met:

[0316] Each code point of the first signaling corresponds to at least one information meaning, each information meaning corresponds to at least one M_CS value, and each M_CS value corresponds to a cyclic prefix index value / cyclic prefix;

[0317] Each PRB is associated with at least one code point;

[0318] The information carried by each PRB is different, and each PRB is associated with at least one indication information;

[0319] The number of first signaling or PSFCH transmissions supported by the same communication device corresponding to each W PRBs is obtained through network side / high layer configuration;

[0320] The number of cyclic prefix pairs supported by each W PRBs is obtained through network side / high layer configuration;

[0321] The number of first signaling transmissions or the number of PSFCH transmissions supported by each W PRBs is obtained through network side / high layer configuration;

[0322] The starting index value of the cyclic prefix pair corresponding to each W PRBs is obtained through network side / high layer configuration;

[0323] The number of communication devices supporting the transmission of the first signaling corresponding to each W PRBs is obtained through network side / high layer configuration.

[0324] The second interval between the cyclic prefix index values / cyclic prefixes corresponding to the M_CS values on the same PRB is the same, and the second interval is configured by the network side / high layer;

[0325] A default code point configured by the network side / high layer is obtained as a reference code point for demodulating the first signaling, the reference code point corresponds to a default state, and the reference code point corresponds to a configured M_CS value;

[0326] Wherein, W is a positive integer.

[0327] In some embodiments, the multiplexing manner of the PSFCH resource comprises at least one of the following:

[0328] a frequency division multiplexing manner;

[0329] a code division multiplexing manner;

[0330] a time division multiplexing manner.

[0331] In some embodiments, the frequency division multiplexing manner satisfies at least one of the following:

[0332] different PRBs are used on the PSFCH when each communication device transmits the first signaling;

[0333] the PRBs used by different communication devices when transmitting the first signaling are continuous or discrete on the PSFCH.

[0334] In some embodiments, the code division multiplexing manner satisfies at least one of the following:

[0335] the first signaling transmission or the PSFCH transmission of multiple communication devices are multiplexed on the same PRB or multiple PRBs;

[0336] obtaining a number of cyclic prefix pairs corresponding to every V PRBs configured by the network side / high layer;

[0337] obtaining a number of first signaling transmissions or a number of PSFCH transmissions from different communication devices supported by every V PRBs configured by the network side / high layer;

[0338] obtaining a starting index value of a cyclic prefix pair corresponding to a code point of the first signaling of different communication devices of every V PRBs configured by the network side / high layer;

[0339] obtaining an M_CS value corresponding to a code point of the first signaling of different communication devices of every V PRBs configured by the network side / high layer, each M_CS value corresponding to a cyclic prefix index value; the M_CS values corresponding to the code points of the first signaling of the same communication device are from the same cyclic prefix pair;

[0340] obtaining a number of communication devices supporting the transmission of the first signaling of every V PRBs configured by the network side / high layer;

[0341] on every V PRBs, a third interval between the cyclic prefix index values / M_CSs corresponding to different communication devices remains the same, and the third interval is configured by the network side / high layer;

[0342] wherein V is a positive integer.

[0343] In some embodiments, the time division multiplexing manner satisfies at least one of the following:

[0344] The first signaling of different communication devices uses resources on different symbols for transmission;

[0345] The first signaling of the same communication device uses resources on multiple symbols for transmission, and the information transmitted on each symbol is different;

[0346] The first signaling of the same communication device uses resources on multiple symbols for transmission, and the information transmitted on each symbol is the same.

[0347] In some embodiments, the sequence length of the PSFCH resource or the sequence length of the PSFCH transmission or the sequence length of the first signaling transmission is determined by one of the following;

[0348] The number of code points or the number of indication states corresponding to the first signaling transmission;

[0349] The number of code points or the number of indication states corresponding to the first signaling transmission when multiple communication devices transmit the first signaling multiplexed on Y PRBs;

[0350] The number of code points corresponding to the first signaling transmission on at least one PRB;

[0351] The number of code points or the number of indication states corresponding to the first signaling transmission when multiple user equipment transmit the first signaling multiplexed on Y PRBs;

[0352] Wherein Y is a positive integer.

[0353] In some embodiments, the configuration of the PSFCH resource includes at least one of the following:

[0354] Configured in resource pools;

[0355] Configured in BWP;

[0356] Configured in system bandwidth;

[0357] Independently configured for one or more transmission types;

[0358] Uniformly configured for multiple transmission types, and the state interpretation of the PSFCH resource needs to be defined independently for a certain or certain transmission type;

[0359] Independently configured for resource collision type;

[0360] Independently configured for HARQ feedback mode type.

[0361] In particular, in some specific resource pools or BWP or specific bandwidth, PSFCH resources can not be configured for indicating the transmission of resource reselection signaling (first signaling).

[0362] In the embodiments of the present application, the carrying content, expression meaning, PSFCH resource configuration mode, and multiplexing mode of the resource reselection indication signaling are given, and the resource position, quantity, multiplexing mode, and other contents occupied by the at least one first communication device when sending the resource reselection indication signaling can be determined, the problem of transmitting the resource reselection indication by using the PSFCH is effectively solved, the transmission efficiency in the sidelink system is improved, the signaling overhead is saved, and the system performance is improved.

[0363] It should be noted that the physical sidelink feedback channel resource configuration method provided in the embodiments of the present application can be executed by a physical sidelink feedback channel resource configuration device, or a control module in the physical sidelink feedback channel resource configuration device for executing the physical sidelink feedback channel resource configuration method. In the embodiments of the present application, the physical sidelink feedback channel resource configuration device executes the physical sidelink feedback channel resource configuration method as an example, and the physical sidelink feedback channel resource configuration device provided in the embodiments of the present application is described.

[0364] Figure 8 The structure diagram of the physical sidelink feedback channel resource configuration device provided in the embodiments of the present application is shown in FIG. 8. Figure 8 As shown in FIG. 8, the physical sidelink feedback channel resource configuration device 800 includes:

[0365] The first sending unit 810 is configured to send, by a first communication device, a first signaling to a second communication device using a physical sidelink feedback channel (PSFCH) resource according to a first rule, and the first signaling is used to instruct the second communication device to perform resource reselection.

[0366] The first signaling carries an indication of one of the following information:

[0367] Whether to perform resource reselection information;

[0368] Collision type information of resource collision;

[0369] Position information of resource collision;

[0370] Time-sensitive characteristic information of resource collision;

[0371] Collision overlap degree information of at least one collided resource;

[0372] Transmission type information of resource collision;

[0373] Necessity degree information of resource reselection;

[0374] Quantity or proportion information of resource collision;

[0375] Business priority information corresponding to the resource causing the collision;

[0376] Resource reselection priority information.

[0377] In the embodiments of the present application, the PSFCH transmission resource reselection indication signaling can effectively help the second communication device to perform necessary resource reselection, avoid some unnecessary resource reselection, improve the efficiency of resource reselection, improve the transmission efficiency in the sidelink system, and improve the system performance.

[0378] Optionally, the first rule includes at least one of the following:

[0379] The first communication device detects that the resource selected or reserved by the second communication device collides with the resource selected or reserved by the first communication device;

[0380] The first communication device detects that the resource selected or reserved by the third communication device collides with the resource selected or reserved by the second communication device;

[0381] The first communication device detects that the uplink transmission resource of the first communication device collides with the resource selected or reserved by the second communication device;

[0382] The first communication device detects that the uplink transmission resource of the third communication device collides with the resource selected or reserved by the second communication device;

[0383] The third communication device is another communication device other than the first communication device.

[0384] Optionally, the resource collision includes at least one of the following:

[0385] The time domain resource partially or entirely overlaps;

[0386] The frequency domain resource partially or entirely overlaps.

[0387] Optionally, the collision type information of the resource collision includes at least one of the following:

[0388] The collision caused by the resource selected or reserved by the second communication device and the resource selected or reserved by the third communication device entirely or partially overlapping;

[0389] The collision caused by the PSFCH resource associated with the resource selected or reserved by the second communication device and the PSFCH resource associated with the resource selected or reserved by the third communication device;

[0390] The collision caused by the PSFCH resource associated with the resource selected or reserved by the second communication device and the resource selected or reserved by the third communication device;

[0391] a collision caused by the PSFCH resource associated with the resource selected or reserved by the second communication device and the uplink transmission resource of the third communication device;

[0392] a collision caused by the resource selected or reserved by the second communication device and the uplink transmission resource of the third communication device;

[0393] a collision caused by the PSFCH resource associated with the resource selected or reserved by the second communication device and the uplink transmission resource of the third communication device;

[0394] a collision caused by the resource selected or reserved by the second communication device and the resource selected or reserved by the first communication device for sidelink, SL, transmission;

[0395] a collision caused by the resource selected or reserved by the second communication device and the uplink, UL, transmission resource of the first communication device;

[0396] a collision caused by the PSFCH resource associated with the resource selected or reserved by the second communication device and the resource selected or reserved by the first communication device;

[0397] a collision caused by the PSFCH resource associated with the resource selected or reserved by the second communication device and the PSFCH resource associated with the resource selected or reserved by the first communication device;

[0398] a collision caused by the PSFCH resource associated with the resource selected or reserved by the second communication device and the uplink, UL, transmission resource of the first communication device;

[0399] a collision caused by the resource selected or reserved by the second communication device and the PSFCH resource associated with the resource selected or reserved by the first communication device.

[0400] Optionally, the location information of the resource collision comprises at least one of:

[0401] part / all of the resource in the Nth / first K resources in the periodically reserved resource;

[0402] the Mth resource in the Nth / first K resources in the periodically reserved resource;

[0403] the first / last M resources in the Nth / first K resources in the periodically reserved resource;

[0404] the Mth resource in the aperiodically reserved resource;

[0405] all or part of the aperiodically reserved resource;

[0406] the first / Mth resource in the non-periodic reserved resource;

[0407] wherein N, K, M are positive integers.

[0408] Optionally, the time-effectiveness information of the resource collision comprises at least one of the following:

[0409] the Pth period in the periodically reserved resource has resource collision;

[0410] the first P periods in the periodically reserved resource have resource collision;

[0411] the last P periods in the periodically reserved resource have resource collision;

[0412] the first preset time length after the current time in the periodically reserved resource has collision;

[0413] the first preset time length after the current time in the non-periodically reserved resource has collision;

[0414] the first Q reserved resources in the non-periodically reserved resource have resource collision;

[0415] the last Q reserved resources in the non-periodically reserved resource have resource collision;

[0416] the Qth reserved resource in the non-periodically reserved resource has resource collision;

[0417] wherein P, Q are positive integers.

[0418] Optionally, the collision overlap information of the at least one collided resource comprises at least one of the following:

[0419] partially overlapping or fully overlapping;

[0420] the number of overlapping sub-channels, time slots, physical resource blocks or symbols;

[0421] the proportion of the overlapping resource in the total amount of resources reserved by the second communication device;

[0422] the proportion of the overlapping resource in the current collided resource reserved by the second communication device.

[0423] Optionally, the transmission type information of the resource collision comprises at least one of the following:

[0424] the collided resource is used for unicast transmission or groupcast transmission or broadcast transmission;

[0425] the collided resource is used for sending data to a specific communication device or a specific group;

[0426] The collided resource is used for sending data to the control node.

[0427] Optionally, the necessity information of the resource reselection includes at least one of the following:

[0428] Must or suggest not to need or not to need to perform resource reselection;

[0429] A weight coefficient, the weight coefficient is used to indicate the necessity of resource reselection.

[0430] Optionally, the number or proportion information of the resource collision includes at least one of the following:

[0431] The number of resources that cause collision;

[0432] The proportion of the resources that cause collision in the total number of reserved resources of the second communication device or the proportion of the total number of reserved resources in at least one period within the second preset time length;

[0433] The number of resources that cause collision within the second preset time length;

[0434] The proportion of the resources that cause collision in the total number of reserved resources of the second communication device within the second preset time length or the proportion of the total number of reserved resources in at least one period within the second preset time length;

[0435] The number of resources that cause collision includes:

[0436] The number of time slots, the number of subchannels, the number of symbols, or the number of physical resource blocks that cause collision;

[0437] The total number of reserved resources includes:

[0438] The total number of reserved time slots, the total number of reserved subchannels, the total number of reserved symbols, or the total number of reserved physical resource blocks.

[0439] Optionally, the service priority information corresponding to the collided resource includes at least one of the following:

[0440] The service priority information of the conflict source device corresponding to the collided resource;

[0441] The difference or absolute value of the difference between the service priority of the second communication device and the service priority of the conflict source device on the collided resource;

[0442] The relationship between the service priority of the second communication device and the service priority of the conflict source device on the collided resource;

[0443] The conflict source device is the first communication device or the third communication device.

[0444] Optionally, the PSFCH resource occupies one or two symbols in time domain.

[0445] In a case where the PSFCH resource occupies two symbols in time domain, the resource on each symbol is used to transmit different information.

[0446] Optionally, the time domain resource location of the PSFCH resource is determined according to at least one of the following manners:

[0447] determined according to a first time slot / subframe in which sidelink control information (SCI) for indicating the reserved resource is sent by the second communication device;

[0448] determined according to a second time slot / subframe in which the collided resource is reserved by the second communication device;

[0449] determined according to a third time slot / subframe in which the non-collided resource is reserved by the second communication device.

[0450] Optionally, the time domain resource location of the PSFCH resource is determined according to a first time slot / subframe in which SCI for indicating the reserved resource is sent by the second communication device, including at least one of the following:

[0451] in a case where there is a first PSFCH resource in the first time slot / subframe, determining to use the first PSFCH resource to transmit the first signaling;

[0452] in a case where there is no PSFCH resource in the first time slot / subframe, using a PSFCH resource closest to the first time slot / subframe to transmit the first signaling;

[0453] using a PSFCH resource in an Lth time slot / subframe after the first time slot to transmit the first signaling;

[0454] using a PSFCH resource closest to an Lth time slot / subframe after the first time slot to transmit the first signaling, wherein the closest PSFCH resource is before or after the Lth time slot / subframe after the first time slot;

[0455] using at least one PSFCH resource within a third preset time length after the first time slot to transmit the first signaling;

[0456] wherein L is a positive integer.

[0457] Optionally, the time domain resource position of the PSFCH resource is determined according to a second time slot / subframe in which a resource reserved by the second communication device collides, including at least one of the following:

[0458] The first signaling is transmitted on a PSFCH resource before U time slots / subframes before the second time slot in which at least one of the collided resources is located or within a fourth preset time length;

[0459] The first signaling is transmitted on a PSFCH resource closest to the second time slot in which at least one of the collided resources is located;

[0460] The first signaling is transmitted on a PSFCH resource closest to before or after H time slots / subframes before the second time slot in which at least one of the collided resources is located;

[0461] X PSFCH resources are selected as second PSFCH resources on a PSFCH resource before R time slots / subframes before the second time slot in which at least one of the collided resources is located or within a fifth preset time length, and the first signaling is transmitted on the second PSFCH resources;

[0462] wherein U, H, R, and X are positive integers.

[0463] Optionally, the time domain resource position of the PSFCH resource is determined according to a third time slot / subframe in which a resource reserved by the second communication device does not collide, including the following:

[0464] The earliest collided resource among all collided resources is determined, and T reserved resources closest to the earliest collided resource are determined;

[0465] A third PSFCH resource is determined according to a time slot / subframe in which the T reserved resources are located, wherein the third PSFCH resource is in the time slot in which the T reserved resources are located, or the third PSFCH resource is in a time slot / subframe before the time slot / subframe in which the T reserved resources are located, or the third PSFCH resource is in a time slot / subframe after the time slot / subframe in which the T reserved resources are located;

[0466] The first signaling is transmitted on the third PSFCH resource;

[0467] wherein T is a positive integer.

[0468] Optionally, the frequency domain resource position of the PSFCH resource is determined according to at least one of the following manners:

[0469] The frequency domain resource position of the PSFCH resource is determined according to SCI sent by the second communication device to indicate a reserved resource;

[0470] determining the frequency domain resource position of the PSFCH resource according to a PSSCH associated with the SCI sent by the second communication device for indicating the reserved resource;

[0471] determining the frequency domain resource position of the PSFCH resource according to a position of the collided resource reserved by the second communication device;

[0472] determining the frequency domain resource position of the PSFCH resource according to a position of the non-collided resource reserved by the second communication device.

[0473] Optionally, the determining the frequency domain resource position of the PSFCH resource according to the SCI sent by the second communication device for indicating the reserved resource comprises:

[0474] determining the frequency domain resource position of the PSFCH resource with a starting or ending or center frequency domain resource of the SCI as a reference point.

[0475] Optionally, the determining the frequency domain resource position of the PSFCH resource according to the PSSCH associated with the SCI sent by the second communication device for indicating the reserved resource comprises:

[0476] determining the frequency domain resource position of the PSFCH resource with a starting or ending or center frequency domain resource of the PSSCH as a reference point.

[0477] Optionally, the determining the frequency domain resource position of the PSFCH resource according to a position of the collided resource reserved by the second communication device comprises:

[0478] determining the frequency domain resource position of the PSFCH resource with a starting or ending or center frequency domain resource of the collided resource as a reference point.

[0479] Optionally, the determining the frequency domain resource position of the PSFCH resource according to a position of the non-collided resource reserved by the second communication device comprises at least one of:

[0480] determining the frequency domain resource position of the PSFCH resource with a starting or ending or center frequency domain resource of the earliest non-collided resource as a reference point.

[0481] determining the frequency domain resource position of the PSFCH resource with a starting or ending or center frequency domain resource of a non-collided resource before the earliest collided resource as a reference point.

[0482] The frequency domain resource position of the PSFCH resource is determined with a starting or ending or center frequency domain resource of any one resource without collision as a reference point.

[0483] The frequency domain resource position of the PSFCH resource is determined with a starting or ending or center frequency domain resource of any one resource without collision as a reference point.

[0484] Optionally, the PSFCH resource occupies one or more PRBs in the frequency domain.

[0485] Optionally, in the case where the PSFCH resource occupies one PRB in the frequency domain, at least one of the following is met:

[0486] Each code point of the first signaling corresponds to at least one information meaning, each information meaning corresponds to at least one M_CS value, each M_CS value corresponds to a cyclic prefix index value / cyclic prefix, and a first interval between cyclic prefix index values / cyclic prefixes corresponding to each M_CS value is the same, the first interval being configured by the network side / high layer;

[0487] A default code point configured by the network side / high layer is obtained and used as a reference code point for demodulating the first signaling, the reference code point corresponding to a default state, and the reference code point corresponding to a configured M_CS value;

[0488] The number of first signaling transmissions or the number of PSFCHs supported by the same communication device for each PRB configured by the network side / high layer is obtained;

[0489] The number of cyclic prefix pairs supported by each PRB configured by the network side / high layer is obtained;

[0490] The number of first signaling transmissions or the number of PSFCH transmissions supported by each PRB is obtained by the network side / high layer;

[0491] The starting index value of the cyclic prefix pair corresponding to each PRB configured by the network side / high layer is obtained;

[0492] The number of communication devices supporting the transmission of the first signaling for each PRB configured by the network side / high layer is obtained.

[0493] Optionally, in the case where the PSFCH resource occupies multiple PRBs in the frequency domain, at least one of the following is met:

[0494] Each code point of the first signaling corresponds to at least one information meaning, each information meaning corresponds to at least one M_CS value, and each M_CS value corresponds to a cyclic prefix index value / cyclic prefix.

[0495] Each PRB is associated with at least one code point.

[0496] Each PRB carries different information, and each PRB is associated with at least one indication information;

[0497] Obtain the first signaling or the number of PSFCHs supported by each W PRBs for transmission of the same communication device configured by the network side / high layer;

[0498] Obtain the number of cyclic prefix pairs supported by each W PRBs configured by the network side / high layer;

[0499] Obtain the number of first signaling transmissions or the number of PSFCH transmissions supported by each W PRBs configured by the network side / high layer;

[0500] Obtain the starting index value of the cyclic prefix pair corresponding to each W PRBs configured by the network side / high layer;

[0501] Obtain the number of communication devices supporting the transmission of the first signaling by each W PRBs configured by the network side / high layer;

[0502] The second spacing between the cyclic prefix index value / M_CS value corresponding to the cyclic prefix on the same PRB is the same, and the second spacing is configured by the network side / high layer;

[0503] Obtain a default code point configured by the network side / high layer as a reference code point for demodulating the first signaling, wherein the reference code point corresponds to a default state, and the reference code point corresponds to a configured M_CS value;

[0504] Wherein, W is a positive integer.

[0505] Optionally, the multiplexing mode of the PSFCH resource includes at least one of the following:

[0506] Frequency division multiplexing mode;

[0507] Code division multiplexing mode;

[0508] Time division multiplexing mode.

[0509] Optionally, the frequency division multiplexing mode satisfies at least one of the following:

[0510] Each communication device uses different PRBs on PFSCH when transmitting the first signaling;

[0511] The PRBs used by different communication devices when transmitting the first signaling are continuous or discrete on the PSFCH.

[0512] Optionally, the code division multiplexing mode satisfies at least one of the following:

[0513] The first signaling transmission or the PSFCH transmission of multiple communication devices is multiplexed on the same PRB or multiple PRBs;

[0514] obtaining a number of cyclic prefix pairs corresponding to every V PRBs configured by the network side / high layer;

[0515] obtaining a number of first signaling transmissions from different communication devices or a number of PSFCH transmissions supported by every V PRBs configured by the network side / high layer;

[0516] obtaining a starting index value of a cyclic prefix pair corresponding to a code point of the first signaling of different communication devices per every V PRBs configured by the network side / high layer;

[0517] obtaining a M_CS value corresponding to a code point of the first signaling of different communication devices per every V PRBs configured by the network side / high layer, each M_CS value corresponding to a cyclic prefix index value; the M_CS values corresponding to the code points of the first signaling of the same communication device are from the same cyclic prefix pair;

[0518] obtaining a number of communication devices supporting the transmission of the first signaling per every V PRBs configured by the network side / high layer;

[0519] a third interval between the cyclic prefix index values / cyclic prefixes corresponding to the M_CS of different communication devices on every V PRBs is kept the same, and the third interval is configured by the network side / high layer;

[0520] wherein V is a positive integer.

[0521] Optionally, the time division multiplexing manner satisfies at least one of the following:

[0522] the first signaling of different communication devices is transmitted using resources on different symbols;

[0523] the first signaling of the same communication device is transmitted using resources on multiple symbols, and the information transmitted on each symbol is different;

[0524] the first signaling of the same communication device is transmitted using resources on multiple symbols, and the information transmitted on each symbol is the same.

[0525] Optionally, the sequence length of the PSFCH resource or the sequence length of the PSFCH transmission or the sequence length of the first signaling transmission is determined by one of the following:

[0526] a number of code points or indication states corresponding to the first signaling transmission;

[0527] a number of code points or indication states corresponding to the first signaling transmission when multiple communication devices transmit the first signaling multiplexed on Y PRBs;

[0528] a number of code points corresponding to the transmission of the first signaling on at least one PRB;

[0529] When the first signaling of the plurality of user equipment is multiplexed on Y PRBs, the number of corresponding code points or the number of indication states on at least one PRB;

[0530] Y is a positive integer.

[0531] Optionally, the configuration mode of the PSFCH resource comprises at least one of the following:

[0532] configured in a resource pool unit;

[0533] configured in a BWP unit;

[0534] configured in a system bandwidth unit;

[0535] independently configured for one or more transmission types;

[0536] unified configuration for multiple transmission types, and the state interpretation of the PSFCH resource needs to be independently defined for one or more transmission types;

[0537] independently configured for resource collision types;

[0538] independently configured for HARQ feedback mode types.

[0539] The physical sidelink feedback channel resource configuration device in the embodiment of the application can be a device, a device with an operating system, or an electronic device, and can also be a component, an integrated circuit, or a chip in a terminal or a network side device.

[0540] The physical sidelink feedback channel resource configuration device provided by the embodiment of the application can realize each process of the method embodiment and achieve the same technical effect. To avoid repetition, it will not be repeated here. Figures 2 to 6

[0541] Figure 9 The second structure diagram of the physical sidelink feedback channel resource configuration device provided by the embodiment of the application is shown in FIG. 9, which comprises: Figure 9

[0542] The first receiving unit 910 is configured to receive first signaling on a physical sidelink feedback channel (PSFCH) resource, wherein the first signaling is used to instruct a second communication device to perform resource reselection.

[0543] The first signaling carries one of the following information:

[0544] information whether to perform resource reselection;

[0545] collision type information of resource collision;

[0546] position information of resource collision;​​

[0547] temporal information of the resource collision;

[0548] collision overlap degree information of the at least one collided resource;

[0549] transmission type information of the resource collision;

[0550] necessity degree information of the resource reselection;

[0551] quantity or proportion information of the resource collision;

[0552] service priority information corresponding to the resource causing the collision;

[0553] resource reselection priority information.

[0554] Optionally, the PSFCH resource occupies one or two symbols in the time domain.

[0555] In the case where the PSFCH resource occupies two symbols in the time domain, the resources on each symbol are used to transmit different information.

[0556] Optionally, the PSFCH resource occupies one or more PRBs in the frequency domain.

[0557] Optionally, in the case where the PSFCH resource occupies one PRB in the frequency domain, at least one of the following is met:

[0558] Each code point of the first signaling corresponds to at least one information meaning, each information meaning corresponds to at least one M_CS value, each M_CS value corresponds to a cyclic prefix index value / cyclic prefix, the first interval between the cyclic prefix index values / cyclic prefixes corresponding to each M_CS value is the same, and the first interval is configured by the network side / high layer;

[0559] A default code point configured by the network side / high layer is obtained as a reference code point for demodulating the first signaling, the reference code point corresponds to a default state, and the reference code point corresponds to a configured M_CS value;

[0560] The number of first signaling transmissions or the number of PSFCHs supported by the same communication device for each PRB is obtained according to the network side / high layer configuration;

[0561] The number of cyclic prefix pairs supported by each PRB is obtained according to the network side / high layer configuration;

[0562] The number of first signaling transmissions or the number of PSFCH transmissions supported by each PRB is obtained according to the network side / high layer configuration;

[0563] The starting index value of the cyclic prefix pair corresponding to each PRB is obtained according to the network side / high layer configuration.

[0564] The number of communication devices supported by each PRB for transmitting the first signaling is obtained through network side / high layer configuration.

[0565] Optionally, in the case that the PSFCH resource occupies multiple PRBs in the frequency domain, at least one of the following is met:

[0566] Each code point of the first signaling corresponds to at least one information meaning, each information meaning corresponds to at least one M_CS value, and each M_CS value corresponds to a cyclic prefix index value / cyclic prefix.

[0567] Each PRB is associated with at least one code point.

[0568] The information carried by each PRB is different, and each PRB is associated with at least one indication information.

[0569] The number of PSFCHs or the number of first signaling transmissions supported by each W PRBs for the same communication device is obtained through network side / high layer configuration.

[0570] The number of cyclic prefix pairs supported by each W PRBs is obtained through network side / high layer configuration.

[0571] The number of first signaling transmissions or the number of PSFCH transmissions supported by each W PRBs is obtained through network side / high layer configuration.

[0572] The starting index value of the cyclic prefix pair corresponding to each W PRBs is obtained through network side / high layer configuration.

[0573] The number of communication devices supported by each W PRBs for transmitting the first signaling is obtained through network side / high layer configuration.

[0574] The second interval between the cyclic prefix index values / cyclic prefixes corresponding to the M_CS values on the same PRB is the same, and the second interval is configured by the network side / high layer.

[0575] A default code point configured by the network side / high layer is used as a reference code point for demodulating the first signaling, the reference code point corresponds to a default state, and the reference code point corresponds to a configured M_CS value.

[0576] Wherein, W is a positive integer.

[0577] Optionally, the multiplexing mode of the PSFCH resource includes at least one of the following:

[0578] Frequency division multiplexing mode;

[0579] Code division multiplexing mode;

[0580] Time division multiplexing mode.

[0581] Optionally, the frequency division multiplexing manner satisfies at least one of the following:

[0582] Different PRBs are used by each communication device when transmitting the first signaling on the PFSCH;

[0583] The PRBs used by different communication devices when transmitting the first signaling are consecutive or discrete on the PSFCH.

[0584] Optionally, the code division multiplexing manner satisfies at least one of the following:

[0585] The first signaling transmission or the PSFCH transmission of multiple communication devices is multiplexed on the same PRB or multiple PRBs;

[0586] The number of cyclic prefix pairs corresponding to every V PRBs is obtained through network side / high layer configuration;

[0587] The number of first signaling transmissions or the number of PSFCH transmissions from different communication devices supported by every V PRBs is obtained through network side / high layer configuration;

[0588] The starting index value of the cyclic prefix pair corresponding to the code point of the first signaling of different communication devices of every V PRBs is obtained through network side / high layer configuration;

[0589] The M_CS value corresponding to the code point of the first signaling of different communication devices of every V PRBs is obtained through network side / high layer configuration, and each M_CS value corresponds to a cyclic prefix index value; the M_CS values corresponding to the code point of the first signaling of the same communication device are from the same cyclic prefix pair;

[0590] The number of communication devices supporting the transmission of the first signaling of every V PRBs is obtained through network side / high layer configuration;

[0591] The third interval between the cyclic prefix index values / M_CS values corresponding to different communication devices on every V PRBs remains the same, and the third interval is configured by the network side / high layer;

[0592] Wherein, V is a positive integer.

[0593] Optionally, the time division multiplexing manner satisfies at least one of the following:

[0594] The first signaling of different communication devices is transmitted using resources on different symbols;

[0595] The first signaling of the same communication device is transmitted using resources on multiple symbols, and the information transmitted on each symbol is different;

[0596] The first signaling of the same communication device is transmitted using resources on multiple symbols, and the information transmitted on each symbol is the same.

[0597] Optionally, the sequence length of the PSFCH resource or the sequence length of the PSFCH transmission or the sequence length of the first signaling transmission is determined by one of the following;

[0598] The number of code points or the number of indication states corresponding to the first signaling transmission;

[0599] The number of code points or the number of indication states corresponding to the first signaling transmission when the plurality of communication devices transmit the first signaling multiplexed on Y PRBs;

[0600] The number of code points corresponding to the first signaling transmission on at least one PRB;

[0601] The number of code points or the number of indication states corresponding to the first signaling transmission when the plurality of user equipment transmit the first signaling multiplexed on Y PRBs;

[0602] Wherein, Y is a positive integer.

[0603] Optionally, the configuration mode of the PSFCH resource includes at least one of the following:

[0604] Configured in units of resource pools;

[0605] Configured in units of BWP;

[0606] Configured in units of system bandwidth;

[0607] Independently configured for one or more transmission types;

[0608] Uniformly configured for multiple transmission types, and the state interpretation of the PSFCH resource needs to be defined independently for one or more transmission types;

[0609] Independently configured for resource collision types;

[0610] Independently configured for HARQ feedback mode types.

[0611] The physical sidelink feedback channel resource configuration device in the embodiments of the application can be a device, a device with an operating system, or an electronic device, and can also be a component, an integrated circuit, or a chip in a terminal or a network side device.

[0612] The physical sidelink feedback channel resource configuration device provided by the embodiments of the application can implement Figure 7 The method embodiments implement various processes and achieve the same technical effects, and to avoid repetition, they will not be described here.

[0613] Optionally, as Figure 10As shown, the embodiments of the present application further provide a communication device 1000, which comprises a processor 1001, a memory 1002, a program or instruction stored in the memory 1002 and executable on the processor 1001, for example, when the communication device 1000 is a terminal, the processor 1001 executes the program or instruction to implement each process of the above-mentioned physical sidelink feedback channel resource configuration method embodiments and achieve the same technical effects. When the communication device 1000 is a network side device, the processor 1001 executes the program or instruction to implement each process of the above-mentioned physical sidelink feedback channel resource configuration method embodiments and achieve the same technical effects. To avoid repetition, details are not described here.

[0614] The embodiments of the present application further provide a first communication device, comprising a processor and a communication interface, the processor is configured to send a first signaling to a second communication device using a physical sidelink feedback channel PSFCH resource according to a first rule, the first signaling is used to instruct the second communication device to perform resource reselection; wherein the first signaling carries an indication of the following information: whether to perform resource reselection information; collision type information of resource collision; location information of resource collision; time-sensitive characteristic information of resource collision; collision overlap degree information of at least one collision resource; transmission type information of resource collision; necessary degree information of resource reselection; number or proportion information of resource collision; service priority information corresponding to the resource collision; resource reselection priority information. The first communication device embodiment corresponds to the above-mentioned first communication device side method embodiment, each implementation process and implementation manner of the above-mentioned method embodiment can be applied to the terminal embodiment and achieve the same technical effects. Specifically, Figure 11 A hardware structure diagram of a first communication device for implementing the embodiments of the present application.

[0615] The terminal 1100 includes, but is not limited to, at least part of components such as a radio frequency unit 1101, a network module 1102, an audio output unit 1103, an input unit 1104, a sensor 1105, a display unit 1106, a user input unit 1107, an interface unit 1108, a memory 1109, and a processor 1110.

[0616] Those skilled in the art can understand that the first communication device 1100 can further include a power supply (such as a battery) for supplying power to each component, and the power supply can be logically connected to the processor 1110 through a power management system, so as to realize functions such as management of charging, discharging, and power consumption management through the power management system. Figure 11 The terminal structure shown in the figure does not constitute a limitation on the terminal, and the terminal can include more or fewer components than shown, or combine certain components, or different component arrangements, which are not described here.

[0617] It should be understood that in the embodiments of the present application, the input unit 1104 can include a graphics processing unit (GPU) 11041 and a microphone 11042. The graphics processing unit 11041 processes image data of a still picture or a video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 1106 can include a display panel 11061, which can be configured in the form of a liquid crystal display, an organic light-emitting diode, etc. The user input unit 1107 includes a touch panel 11071 and other input devices 11072. The touch panel 11071 is also called a touch screen. The touch panel 11071 can include two parts of a touch detection device and a touch controller. The other input devices 11072 can include, but are not limited to, a physical keyboard, function keys (such as volume control keys, on-off keys, etc.), trackballs, mice, joysticks, and the like, which will not be described here.

[0618] In the embodiments of the present application, the radio frequency unit 1101 receives the downlink data from the network side device and processes it by the processor 1110. In addition, the radio frequency unit 1101 sends the uplink data to the network side device. Generally, the radio frequency unit 1101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0619] The memory 1109 can be used to store software programs or instructions and various data. The memory 1109 can mainly include a storage program or instruction area and a storage data area, wherein the storage program or instruction area can store an operating system, at least one application program or instruction required by a function (such as a sound playing function, an image playing function, etc.), etc. In addition, the memory 1109 can include a high-speed random access memory, and can also include a non-volatile memory, which can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM) or a flash memory. For example, at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state memory device.

[0620] The processor 1110 can include one or more processing units; optionally, the processor 1110 can integrate an application processor and a modem processor, wherein the application processor mainly processes an operating system, a user interface and an application program or instruction, etc., and the modem processor mainly processes wireless communication, such as a baseband processor. It can be understood that the above-mentioned modem processor can also not be integrated into the processor 1110.

[0621] The processor 1110 is configured to transmit, to a second communication device, first signaling for instructing the second communication device to perform resource reselection, using a physical sidelink feedback channel (PSFCH) resource according to a first rule. The first signaling carries an indication of one of the following information: whether to perform resource reselection information; collision type information of resource collision; location information of resource collision; time-sensitive characteristic information of resource collision; collision overlap degree information of at least one collided resource; transmission type information of resource collision; necessity degree information of resource reselection; quantity or proportion information of resource collision; service priority information corresponding to the collided resource; and resource reselection priority information.

[0622] Optionally, the first rule includes at least one of the following:

[0623] The first communication device detects that the resource selected or reserved by the second communication device collides with the resource selected or reserved by the first communication device.

[0624] The first communication device detects that the resource selected or reserved by the third communication device collides with the resource selected or reserved by the second communication device.

[0625] The first communication device detects that the uplink transmission resource of the first communication device collides with the resource selected or reserved by the second communication device.

[0626] The first communication device detects that the uplink transmission resource of the third communication device collides with the resource selected or reserved by the second communication device.

[0627] Optionally, the third communication device is a communication device other than the first communication device.

[0628] Optionally, the resource collision includes at least one of the following:

[0629] Partial or complete overlap in time domain resources;

[0630] Partial or complete overlap in frequency domain resources.

[0631] Optionally, the collision type information of the resource collision includes at least one of the following:

[0632] Collision caused by the resource selected or reserved by the second communication device and the resource selected or reserved by the third communication device being completely or partially overlapped;

[0633] Collision caused by the PSFCH resource associated with the resource selected or reserved by the second communication device and the PSFCH resource associated with the resource selected or reserved by the third communication device;

[0634] a PSFCH resource associated with the resource selected or reserved by the second communication device, and a collision caused by the resource selected or reserved by the third communication device;

[0635] a PSFCH resource associated with the resource selected or reserved by the second communication device, and a collision caused by the resource selected or reserved by the third communication device;

[0636] a collision caused by the resource selected or reserved by the second communication device and the uplink transmission resource of the third communication device being fully or partially overlapped;

[0637] a collision caused by the PSFCH resource associated with the resource selected or reserved by the second communication device and the uplink transmission resource of the third communication device being partially or fully overlapped;

[0638] a collision caused by the resource selected or reserved by the second communication device and the resource position of the first communication device selected or reserved for sidelink (SL) transmission being partially or fully overlapped;

[0639] a collision caused by the resource selected or reserved by the second communication device and the resource position of the first communication device for uplink (UL) transmission being partially or fully overlapped;

[0640] a PSFCH resource associated with the resource selected or reserved by the second communication device, and a collision caused by the resource selected or reserved by the first communication device;

[0641] a PSFCH resource associated with the resource selected or reserved by the second communication device, and a collision caused by the PSFCH resource associated with the resource selected or reserved by the first communication device;

[0642] a PSFCH resource associated with the resource selected or reserved by the second communication device, and a collision caused by the uplink (UL) transmission resource of the first communication device;

[0643] a PSFCH resource associated with the resource selected or reserved by the second communication device, and a collision caused by the PSFCH resource associated with the resource selected or reserved by the first communication device.

[0644] Optionally, the position information of the resource collision comprises at least one of:

[0645] part / all of the resource in the N / first K periods of the periodically reserved resource;

[0646] the Mth resource in the N / first K periods of the periodically reserved resource;

[0647] the first / last M resources in the N / first K periods of the periodically reserved resource;

[0648] the Mth resource of the aperiodically reserved resource;

[0649] all or part of the resources in the aperiodic reserved resources;

[0650] the first / M last resources in the aperiodic reserved resources;

[0651] wherein N, K, M are positive integers.

[0652] Optionally, the time-effectiveness information of the resource collision includes at least one of the following:

[0653] the Pth periodic resource in the periodically reserved resources has a resource collision;

[0654] the first P periodic resources in the periodically reserved resources have resource collisions;

[0655] the last P periodic resources in the periodically reserved resources have resource collisions;

[0656] the first preset time length after the current time in the periodically reserved resources has a collision;

[0657] the first preset time length after the current time in the aperiodic reserved resources has a collision;

[0658] the first Q reserved resources in the aperiodic reserved resources have resource collisions;

[0659] the last Q reserved resources in the aperiodic reserved resources have resource collisions;

[0660] the Qth reserved resource in the aperiodic reserved resources has a resource collision;

[0661] wherein P, Q are positive integers.

[0662] Optionally, the collision overlap information of the at least one collided resource includes at least one of the following:

[0663] partially overlapping or fully overlapping;

[0664] the number of overlapping subchannels, time slots, physical resource blocks, or symbols;

[0665] the proportion of overlapping resources to the total amount of resources reserved by the second communication device;

[0666] the proportion of overlapping resources to the current collided resources reserved by the second communication device.

[0667] Optionally, the transmission type information of the resource collision includes at least one of the following:

[0668] the collided resource is for unicast transmission or groupcast transmission or broadcast transmission;

[0669] The collided resource is used for sending data to a specific communication device or a specific group;

[0670] The collided resource is used for sending data to a control node.

[0671] Optionally, the necessity information of the resource reselection includes at least one of the following:

[0672] Must or suggest to need or suggest not to need or not to need to perform resource reselection;

[0673] A weight coefficient, the weight coefficient is used to indicate the necessity of resource reselection.

[0674] Optionally, the number or proportion information of the resource collision includes at least one of the following:

[0675] The number of resources that cause collision;

[0676] The proportion of the resources that cause collision in the total number of reserved resources of the second communication device or the proportion of the total number of reserved resources in at least one period within the second preset time length;

[0677] The number of resources that cause collision within the second preset time length;

[0678] The proportion of the resources that cause collision within the second preset time length in the total number of reserved resources of the second communication device within the second preset time length or the total number of reserved resources in at least one period within the second preset time length;

[0679] Wherein, the number of resources that cause collision includes:

[0680] The number of time slots or the number of sub-channels or the number of symbols or the number of physical resource blocks that cause collision;

[0681] Wherein, the total number of reserved resources includes:

[0682] The total number of reserved time slots or the total number of sub-channels or the total number of symbols or the total number of physical resource blocks.

[0683] Optionally, the service priority information corresponding to the collided resource includes at least one of the following:

[0684] The service priority information of the conflict source device corresponding to the resource that causes collision;

[0685] The difference or absolute value of the difference between the service priority of the second communication device and the service priority of the conflict source device on the resource that causes collision;

[0686] The relationship between the service priority of the second communication device and the service priority of the conflict source device on the resource that causes collision;

[0687] The conflict source device is the first communication device or the third communication device.

[0688] Optionally, the PSFCH resource occupies one or two symbols in time domain.

[0689] In a case where the PSFCH resource occupies two symbols in time domain, the resource on each symbol is used to transmit different information.

[0690] Optionally, the time domain resource position of the PSFCH resource is determined according to at least one of the following manners:

[0691] determined according to a first time slot / subframe in which sidelink control information (SCI) for indicating the reserved resource is sent by the second communication device;

[0692] determined according to a second time slot / subframe in which the resource that has the collision is reserved by the second communication device;

[0693] determined according to a third time slot / subframe in which the resource that has no collision is reserved by the second communication device.

[0694] Optionally, the time domain resource position of the PSFCH resource is determined according to the first time slot / subframe in which the SCI for indicating the reserved resource is sent by the second communication device, including at least one of the following:

[0695] in a case where there is a first PSFCH resource in the first time slot / subframe, determining to use the first PSFCH resource to transmit the first signaling;

[0696] in a case where there is no PSFCH resource in the first time slot / subframe, using a PSFCH resource closest to the first time slot / subframe to transmit the first signaling;

[0697] using a PSFCH resource in an Lth time slot / subframe after the first time slot to transmit the first signaling;

[0698] using a PSFCH resource closest to an Lth time slot / subframe after the first time slot to transmit the first signaling; wherein the closest PSFCH resource is before or after the Lth time slot / subframe after the first time slot;

[0699] using at least one PSFCH resource within a third preset time length after the first time slot to transmit the first signaling;

[0700] wherein L is a positive integer.

[0701] Optionally, the time domain resource position of the PSFCH resource is determined according to a second time slot / subframe in which a resource reserved by the second communication device collides, including at least one of the following:

[0702] transmitting the first signaling on a PSFCH resource before U time slots / subframes before the second time slot in which at least one of the collided resources is located or within a fourth preset time length;

[0703] transmitting the first signaling on a PSFCH resource closest to the second time slot in which at least one of the collided resources is located;

[0704] transmitting the first signaling on a PSFCH resource closest to before or after H time slots / subframes before the second time slot in which at least one of the collided resources is located;

[0705] selecting X PSFCH resources as second PSFCH resources on a PSFCH resource before R time slots / subframes before the second time slot in which at least one of the collided resources is located or within a fifth preset time length, and transmitting the first signaling on the second PSFCH resources;

[0706] wherein U, H, R, and X are positive integers.

[0707] Optionally, the time domain resource position of the PSFCH resource is determined according to a third time slot / subframe in which a resource reserved by the second communication device does not collide, including the following:

[0708] determining a resource that collides earliest among all the collided resources, and determining T reserved resources closest to before the resource that collides earliest;

[0709] determining a third PSFCH resource according to time slots / subframes in which the T reserved resources are located, wherein the third PSFCH resource is in the time slots in which the T reserved resources are located, or the third PSFCH resource is in time slots / subframes before the time slots / subframes in which the T reserved resources are located, or the third PSFCH resource is in time slots / subframes after the time slots / subframes in which the T reserved resources are located;

[0710] transmitting the first signaling on the third PSFCH resource;

[0711] wherein T is a positive integer.

[0712] Optionally, the frequency domain resource position of the PSFCH resource is determined according to at least one of the following manners:

[0713] determining the frequency domain resource position of the PSFCH resource according to SCI sent by the second communication device for indicating a reserved resource;

[0714] determining the frequency domain resource position of the PSFCH resource according to a PSSCH associated with the SCI sent by the second communication device for indicating the reserved resource;

[0715] determining the frequency domain resource position of the PSFCH resource according to a position of the collided resource reserved by the second communication device;

[0716] determining the frequency domain resource position of the PSFCH resource according to a position of the non-collided resource reserved by the second communication device.

[0717] Optionally, the determining the frequency domain resource position of the PSFCH resource according to the SCI sent by the second communication device for indicating the reserved resource comprises:

[0718] determining the frequency domain resource position of the PSFCH resource with a starting or ending or center frequency domain resource of the SCI as a reference point.

[0719] Optionally, the determining the frequency domain resource position of the PSFCH resource according to the PSSCH associated with the SCI sent by the second communication device for indicating the reserved resource comprises:

[0720] determining the frequency domain resource position of the PSFCH resource with a starting or ending or center frequency domain resource of the PSSCH as a reference point.

[0721] Optionally, the determining the frequency domain resource position of the PSFCH resource according to a position of the collided resource reserved by the second communication device comprises:

[0722] determining the frequency domain resource position of the PSFCH resource with a starting or ending or center frequency domain resource of the collided resource as a reference point.

[0723] Optionally, the determining the frequency domain resource position of the PSFCH resource according to a position of the non-collided resource reserved by the second communication device comprises at least one of:

[0724] determining the frequency domain resource position of the PSFCH resource with a starting or ending or center frequency domain resource of the earliest non-collided resource as a reference point;

[0725] determining the frequency domain resource position of the PSFCH resource with a starting or ending or center frequency domain resource of a non-collided resource before the earliest collided resource as a reference point;

[0726] The frequency domain resource position of the PSFCH resource is determined with a starting or ending or center frequency domain resource of any one resource without collision as a reference point.

[0727] The frequency domain resource position of the PSFCH resource is determined with a starting or ending or center frequency domain resource of any one resource without collision as a reference point.

[0728] Optionally, the PSFCH resource occupies one or more PRBs in the frequency domain.

[0729] Optionally, in the case where the PSFCH resource occupies one PRB in the frequency domain, at least one of the following is met:

[0730] Each code point of the first signaling corresponds to at least one information meaning, each information meaning corresponds to at least one M_CS value, each M_CS value corresponds to a cyclic prefix index value / cyclic prefix, and a first interval between cyclic prefix index values / cyclic prefixes corresponding to each M_CS value is the same, the first interval being configured by the network side / high layer;

[0731] A default code point configured by the network side / high layer is obtained and used as a reference code point for demodulating the first signaling, the reference code point corresponding to a default state, and the reference code point corresponding to a configured M_CS value;

[0732] The number of first signaling transmissions or the number of PSFCHs supported by the same communication device for each PRB configured by the network side / high layer is obtained;

[0733] The number of cyclic prefix pairs supported by each PRB is obtained by the network side / high layer;

[0734] The number of first signaling transmissions or the number of PSFCH transmissions supported by each PRB is obtained by the network side / high layer;

[0735] The starting index value of the cyclic prefix pair corresponding to each PRB is obtained by the network side / high layer;

[0736] The number of communication devices supporting the transmission of the first signaling for each PRB is obtained by the network side / high layer.

[0737] Optionally, in the case where the PSFCH resource occupies multiple PRBs in the frequency domain, at least one of the following is met:

[0738] Each code point of the first signaling corresponds to at least one information meaning, each information meaning corresponds to at least one M_CS value, and each M_CS value corresponds to a cyclic prefix index value / cyclic prefix.

[0739] Each PRB is associated with at least one code point.

[0740] Each PRB carries different information, and each PRB is associated with at least one indication information;

[0741] Obtaining the first signaling or the number of PSFCHs supported by each W PRBs for transmission of the same communication device configured by the network side / high layer;

[0742] Obtaining the number of cyclic prefix pairs supported by each W PRBs configured by the network side / high layer;

[0743] Obtaining the number of first signaling transmissions or the number of PSFCH transmissions supported by each W PRBs configured by the network side / high layer;

[0744] Obtaining the starting index value of the cyclic prefix pair corresponding to each W PRBs configured by the network side / high layer;

[0745] Obtaining the number of communication devices supporting the transmission of the first signaling by each W PRBs configured by the network side / high layer;

[0746] The second interval between the cyclic prefix index value / M_CS value corresponding to the cyclic prefix on the same PRB is the same, and the second interval is configured by the network side / high layer;

[0747] Obtaining a default code point configured by the network side / high layer as a reference code point for demodulating the first signaling, wherein the reference code point corresponds to a default state, and the reference code point corresponds to a configured M_CS value;

[0748] Wherein, W is a positive integer.

[0749] Optionally, the multiplexing mode of the PSFCH resource includes at least one of the following:

[0750] Frequency division multiplexing mode;

[0751] Code division multiplexing mode;

[0752] Time division multiplexing mode.

[0753] Optionally, the frequency division multiplexing mode satisfies at least one of the following:

[0754] Each communication device uses different PRBs on PFSCH when transmitting the first signaling;

[0755] The PRBs used by different communication devices when transmitting the first signaling are continuous or discrete on the PSFCH.

[0756] Optionally, the code division multiplexing mode satisfies at least one of the following:

[0757] The first signaling transmission or the PSFCH transmission of multiple communication devices is multiplexed on the same or multiple PRBs;

[0758] obtaining a number of cyclic prefix pairs corresponding to every V PRBs configured by the network side / high layer;

[0759] obtaining a number of first signaling transmissions from different communication devices or a number of PSFCH transmissions supported by every V PRBs configured by the network side / high layer;

[0760] obtaining a starting index value of a cyclic prefix pair corresponding to a code point of the first signaling of different communication devices per every V PRBs configured by the network side / high layer;

[0761] obtaining a M_CS value corresponding to a code point of the first signaling of different communication devices per every V PRBs configured by the network side / high layer, each M_CS value corresponding to a cyclic prefix index value; the M_CS values corresponding to the code points of the first signaling of the same communication device are from the same cyclic prefix pair;

[0762] obtaining a number of communication devices supporting the transmission of the first signaling per every V PRBs configured by the network side / high layer;

[0763] a third interval between the cyclic prefix index values / cyclic prefixes corresponding to the M_CS of different communication devices on every V PRBs is kept the same, and the third interval is configured by the network side / high layer;

[0764] wherein V is a positive integer.

[0765] Optionally, the time division multiplexing manner satisfies at least one of the following:

[0766] the first signaling of different communication devices is transmitted using resources on different symbols;

[0767] the first signaling of the same communication device is transmitted using resources on multiple symbols, and the information transmitted on each symbol is different;

[0768] the first signaling of the same communication device is transmitted using resources on multiple symbols, and the information transmitted on each symbol is the same.

[0769] Optionally, the sequence length of the PSFCH resource or the sequence length of the PSFCH transmission or the sequence length of the first signaling transmission is determined by one of the following:

[0770] a number of code points or indication states corresponding to the first signaling transmission;

[0771] a number of code points or indication states corresponding to the first signaling transmission when multiple communication devices transmit the first signaling multiplexed on Y PRBs;

[0772] a number of code points corresponding to the transmission of the first signaling on at least one PRB;

[0773] When the first signaling of the plurality of user equipment is multiplexed on Y PRBs, the number of corresponding code points or the number of indication states on at least one PRB;

[0774] Y is a positive integer.

[0775] Optionally, the configuration mode of the PSFCH resource includes at least one of the following:

[0776] Configured in a resource pool;

[0777] Configured in a BWP;

[0778] Configured in a system bandwidth;

[0779] Independently configured for one or more transmission types;

[0780] Unified configuration for multiple transmission types, and the state interpretation of the PSFCH resource needs to be independently defined for one or more transmission types;

[0781] Independently configured for resource collision types;

[0782] Independently configured for HARQ feedback mode types.

[0783] In the embodiments of the present application, the carrying content, expression meaning, PSFCH resource configuration mode, and multiplexing mode of the resource reselection indication signaling are given, which can determine the resource position, number, and multiplexing mode of the resource reselection indication signaling sent by at least one first communication device, effectively solve the problem of transmitting resource reselection indication using PSFCH, improve the transmission efficiency in the sidelink system, save signaling overhead, and improve system performance.

[0784] Specifically, the embodiments of the present application also provide a first communication device. As shown in Figure 12 The second communication device 1200 includes an antenna 1201, a radio frequency device 1202, and a baseband device 1203. The antenna 1201 is connected to the radio frequency device 1202. In the uplink direction, the radio frequency device 1202 receives information through the antenna 1201 and sends the received information to the baseband device 1203 for processing. In the downlink direction, the baseband device 1203 processes the information to be sent and sends it to the radio frequency device 1202. The radio frequency device 1202 processes the received information and sends it out through the antenna 1201.

[0785] The above frequency band processing device can be located in the baseband device 1203. The method executed by the second communication device in the above embodiments can be implemented in the baseband device 1203, which includes a processor 1204 and a memory 1205.

[0786] The baseband device 1203 may, for example, include at least one baseband board on which a plurality of chips are disposed, as shown in FIG. 11, wherein one of the chips is, for example, a processor 1204 connected with a memory 1205 to invoke a program in the memory 1205 to perform the network-side device operation shown in the above method embodiment. Figure 12

[0787] The baseband device 1203 may further include a network interface 1206 for interacting information with the radio frequency device 1202, which is, for example, a common public radio interface (CPRI).

[0788] Specifically, the second communication device of the embodiment of the present application further includes instructions or programs stored in the memory 1205 and executable on the processor 1204, and the processor 1204 invokes the instructions or programs in the memory 1205 to perform the method shown in the above method embodiment and achieve the same technical effects, and thus the details are not described herein. Figure 8

[0789] The embodiment of the present application further provides a second communication device including a processor and a communication interface, the communication interface is used for receiving first signaling on a physical sidelink feedback channel (PSFCH) resource, wherein the first signaling is used for instructing the second communication device to perform resource reselection; wherein the first signaling carries an indication of the following information: whether to perform resource reselection information; collision type information of resource collision; location information of resource collision; time-sensitive characteristic information of resource collision; collision overlap degree information of at least one collision resource; transmission type information of resource collision; necessary degree information of resource reselection; quantity or proportion information of resource collision; service priority information corresponding to the resource collision; resource reselection priority information. The second communication device embodiment is corresponding to the above-mentioned second communication device side method embodiment, and each implementation process and implementation manner of the above-mentioned method embodiment can be applied to the second communication device embodiment and achieve the same technical effects.

[0790] Figure 13 A hardware structure schematic diagram of a second communication device according to an embodiment of the present application.

[0791] The terminal 1300 includes, but is not limited to, at least part of components such as a radio frequency unit 1301, a network module 1302, an audio output unit 1303, an input unit 1304, a sensor 1305, a display unit 1306, a user input unit 1307, an interface unit 1308, a memory 1309, and a processor 1310.

[0792] ​​Those skilled in the art can understand that the second communication device 1300 can also include a power supply (such as a battery) for supplying power to each component, and the power supply can be logically connected to the processor 1310 through a power management system, so that the power management system can realize the functions of managing charging, discharging, and power consumption management. Figure 13 The terminal structure shown in the figure does not constitute a limitation on the terminal, and the terminal can include more or fewer components than the figure, or combine certain components, or different component arrangements, which are not described here.

[0793] It should be understood that in the embodiments of the present application, the input unit 1304 can include a graphics processor (GPU) 13041 and a microphone 13042. The graphics processor 13041 processes image data of a still picture or a video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 1306 can include a display panel 13061, which can be configured in the form of a liquid crystal display, an organic light-emitting diode, etc. The user input unit 1307 includes a touch panel 13071 and other input devices 13072. The touch panel 13071 is also called a touch screen. The touch panel 13071 can include two parts of a touch detection device and a touch controller. The other input devices 13072 can include, but are not limited to, a physical keyboard, function keys (such as volume control keys, on-off keys, etc.), trackballs, mice, joysticks, which are not described here.

[0794] In the embodiments of the present application, the radio frequency unit 1301 receives the downlink data from the network side device and processes it by the processor 1310. In addition, the uplink data is sent to the network side device. Generally, the radio frequency unit 1301 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0795] The memory 1309 can be used to store software programs or instructions and various data. The memory 1309 can mainly include a storage program or instruction area and a storage data area, wherein the storage program or instruction area can store an operating system, application programs or instructions required by at least one function (such as a sound playing function, an image playing function, etc.), etc. In addition, the memory 1309 can include a high-speed random access memory, and can also include a non-volatile memory, which can be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM, PROM), an erasable programmable read-only memory (Erasable PROM, EPROM), an electrically erasable programmable read-only memory (Electrically EPROM, EEPROM), or a flash memory. For example, at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state storage device.

[0796] The processor 1310 can include one or more processing units; optionally, the processor 1310 can integrate an application processor and a modem processor, wherein the application processor mainly processes an operating system, a user interface, and application programs or instructions, and the modem processor mainly processes wireless communication, such as a baseband processor. It can be understood that the above-mentioned modem processor can also not be integrated into the processor 1310.

[0797] The radio frequency unit 1301 is configured to receive first signaling on a physical sidelink feedback channel (PSFCH) resource, wherein the first signaling is used to instruct the second communication device to perform resource reselection; wherein the first signaling carries an indication of one of the following information: whether to perform resource reselection information; collision type information of resource collision; location information of resource collision; time-sensitive characteristic information of resource collision; collision overlap degree information of at least one collision resource; transmission type information of resource collision; necessity degree information of resource reselection; quantity or proportion information of resource collision; service priority information corresponding to the resource causing collision; resource reselection priority information.

[0798] Optionally, the PSFCH resource occupies one or two symbols in the time domain.

[0799] In the case where the PSFCH resource occupies two symbols in the time domain, the resources on each symbol are used to transmit different information.

[0800] Optionally, the PSFCH resource occupies one or more PRBs in the frequency domain.

[0801] Optionally, in the case where the PSFCH resource occupies one PRB in the frequency domain, at least one of the following is met:

[0802] Each codepoint of the first signaling corresponds to at least one information meaning, each information meaning corresponds to at least one M_CS value, each M_CS value corresponds to a cyclic prefix index value / cyclic prefix, a first interval between cyclic prefix index values / cyclic prefixes corresponding to each M_CS value is the same, and the first interval is configured by the network side / high layer;

[0803] A default codepoint configured by the network side / high layer is obtained as a reference codepoint for demodulating the first signaling, the reference codepoint corresponds to a default state, and the reference codepoint corresponds to a configured M_CS value;

[0804] The number of first signaling transmissions or the number of PSFCHs supported by the same communication device for each PRB configured by the network side / high layer is obtained;

[0805] The number of cyclic prefix pairs supported by each PRB configured by the network side / high layer is obtained;

[0806] The number of first signaling transmissions or the number of PSFCH transmissions supported by each PRB configured by the network side / high layer is obtained;

[0807] The starting index value of the cyclic prefix pair corresponding to each PRB configured by the network side / high layer is obtained;

[0808] The number of communication devices supporting the transmission of the first signaling for each PRB configured by the network side / high layer is obtained.

[0809] Optionally, in the case that the PSFCH resource occupies a plurality of PRBs in the frequency domain, at least one of the following is met:

[0810] Each codepoint of the first signaling corresponds to at least one information meaning, each information meaning corresponds to at least one M_CS value, and each M_CS value corresponds to a cyclic prefix index value / cyclic prefix;

[0811] Each PRB is associated with at least one codepoint;

[0812] The information carried by each PRB is different, and each PRB is associated with at least one indication information;

[0813] The number of first signaling or PSFCHs supported by the same communication device for each W PRBs configured by the network side / high layer is obtained;

[0814] The number of cyclic prefix pairs supported by each W PRBs configured by the network side / high layer is obtained;

[0815] The number of first signaling transmissions or the number of PSFCH transmissions supported by each W PRBs configured by the network side / high layer is obtained;

[0816] obtaining a cyclic prefix pair start index value corresponding to every W PRB configured by the network side / high layer;

[0817] obtaining a number of communication devices supporting transmission of the first signaling per W PRB configured by the network side / high layer;

[0818] the second interval between the cyclic prefix index value / M_CS value corresponding to the same PRB is the same, and the second interval is configured by the network side / high layer;

[0819] obtaining a default code point configured by the network side / high layer as a reference code point for demodulating the first signaling, wherein the reference code point corresponds to a default state, and the reference code point corresponds to a configured M_CS value;

[0820] wherein W is a positive integer.

[0821] Optionally, the multiplexing manner of the PSFCH resource includes at least one of the following:

[0822] frequency division multiplexing manner;

[0823] code division multiplexing manner;

[0824] time division multiplexing manner.

[0825] Optionally, the frequency division multiplexing manner satisfies at least one of the following:

[0826] each communication device uses different PRB on the PSFCH when transmitting the first signaling;

[0827] the PRB used by different communication devices when transmitting the first signaling is continuous or discrete on the PSFCH.

[0828] Optionally, the code division multiplexing manner satisfies at least one of the following:

[0829] the first signaling transmission of multiple communication devices or the PSFCH transmission is multiplexed on the same PRB or multiple PRBs;

[0830] obtaining a number of cyclic prefix pairs corresponding to every V PRB configured by the network side / high layer;

[0831] obtaining a number of first signaling transmissions from different communication devices or a number of PSFCH transmissions supported per V PRB configured by the network side / high layer;

[0832] obtaining a cyclic prefix pair start index value corresponding to the code point of the first signaling of different communication devices per V PRB configured by the network side / high layer;

[0833] M_CS values corresponding to code points of the first signaling of different communication devices per V PRBs are acquired, each M_CS value corresponds to a cyclic prefix index value; the M_CS values corresponding to the code points of the first signaling of the same communication device come from the same cyclic prefix pair;

[0834] The number of communication devices supporting the transmission of the first signaling per V PRBs configured by the network side / high layer is acquired;

[0835] The third interval between the cyclic prefix index values / cyclic prefixes corresponding to M_CS of different communication devices per V PRBs remains the same, and the third interval is configured by the network side / high layer;

[0836] Wherein, V is a positive integer.

[0837] Optionally, the time division multiplexing mode satisfies at least one of the following:

[0838] The first signaling of different communication devices is transmitted using resources on different symbols;

[0839] The first signaling of the same communication device is transmitted using resources on multiple symbols, and the information transmitted on each symbol is different;

[0840] The first signaling of the same communication device is transmitted using resources on multiple symbols, and the information transmitted on each symbol is the same.

[0841] Optionally, the sequence length of the PSFCH resource or the sequence length of the PSFCH transmission or the sequence length of the first signaling transmission is determined by one of the following:

[0842] The number of code points or indication states corresponding to the first signaling transmission;

[0843] The number of code points or indication states corresponding to the first signaling transmission of multiple communication devices multiplexed on Y PRBs;

[0844] The number of code points corresponding to at least one PRB when transmitting the first signaling;

[0845] The number of code points or indication states corresponding to at least one PRB when multiple user equipment transmit the first signaling and are multiplexed on Y PRBs;

[0846] Wherein, Y is a positive integer.

[0847] Optionally, the configuration mode of the PSFCH resource includes at least one of the following:

[0848] Configured in resource pool units;

[0849] Configured in BWP units;

[0850] configured in units of system bandwidths;

[0851] independently configured for one or more transmission types;

[0852] uniformly configured for multiple transmission types, and the state interpretation of the PSFCH resource needs to be defined independently for one or more transmission types;

[0853] independently configured for resource collision types;

[0854] independently configured for HARQ feedback mode types.

[0855] In the embodiments of the present application, the carrying content, expression meaning, PSFCH resource configuration mode, and multiplexing mode of the resource reselection indication signaling are given, and the resource position, quantity, multiplexing mode, and other contents occupied by the at least one first communication device when sending the resource reselection indication signaling can be determined, the problem of transmitting the resource reselection indication using the PSFCH is effectively solved, the transmission efficiency in the sidelink system is improved, the signaling overhead is saved, and the system performance is improved.

[0856] Specifically, the embodiments of the present application also provide a second communication device. As shown in the Figure 14 The second communication device 1400 includes an antenna 1401, a radio frequency device 1402, and a baseband device 1403. The antenna 1401 is connected to the radio frequency device 1402. In the uplink direction, the radio frequency device 1402 receives information through the antenna 1401 and sends the received information to the baseband device 1403 for processing. In the downlink direction, the baseband device 1403 processes the information to be sent and sends it to the radio frequency device 1402. The radio frequency device 1402 processes the received information and transmits it through the antenna 1401.

[0857] The above frequency band processing device can be located in the baseband device 1403. The method executed by the second communication device in the above embodiments can be implemented in the baseband device 1403, which includes a processor 1404 and a memory 1405.

[0858] The baseband device 1403 may, for example, include at least one baseband board on which a plurality of chips are disposed, as shown in Figure 14 For example, one of the chips is a processor 1404 connected to the memory 1405 to call the program in the memory 1405 and execute the network side device operation shown in the above method embodiments.

[0859] The baseband device 1403 can further include a network interface 1406 for interacting with the radio frequency device 1402, which is, for example, a common public radio interface (CPRI).

[0860] Specifically, the second communication device of the embodiment of the application further includes instructions or programs stored in the memory 1405 and executable on the processor 1404, and the processor 1404 invokes the instructions or programs in the memory 1405 to perform the method executed by the modules shown in the above embodiments and achieve the same technical effects, and thus details are not described herein. Figure 9 The modules shown in the above embodiments perform the method and achieve the same technical effects, and thus details are not described herein.

[0861] The embodiment of the application further provides a readable storage medium, and the readable storage medium stores programs or instructions, and the programs or instructions are executed by a processor to implement various processes of the physical sidelink feedback channel resource configuration method and achieve the same technical effects, and thus details are not described herein.

[0862] The processor is the processor in the terminal in the above embodiments. The readable storage medium includes a computer readable storage medium, such as a computer readable only memory (ROM), a random access memory (RAM), a magnetic disc or an optical disc, and the like.

[0863] The embodiment of the application further provides a chip, and the chip includes a processor and a communication interface, the communication interface is coupled with the processor, and the processor is used to run programs or instructions to implement various processes of the physical sidelink feedback channel resource configuration method and achieve the same technical effects, and thus details are not described herein.

[0864] It should be understood that the chip mentioned in the embodiment of the application can also be referred to as a system chip, a system on chip, a chip system or a system on chip, and the like.

[0865] The embodiment of the application further provides a computer program / program product, and the computer program / program product is stored in a non-transitory storage medium, and the program / program product is executed by at least one processor to implement various processes of the system message reporting method and achieve the same technical effects, and thus details are not described herein.

[0866] It should be noted that, in the present document, the terms "comprises", "comprising", or any other variations 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 can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element. Furthermore, it is to be understood that the method and apparatus of the present application can be carried out by more than one process, method, article, or apparatus either simultaneously, concurrently, or with intervening action that are carried out at the same time, either in a simultaneous fashion or in a fashion that is interleaved in time. For example, the described methods can be performed in a different order from that described, and / or various steps can be combined or omitted, and / or additional steps can be added, without departing from the scope of the present application. Also, features described with respect to certain examples can be combined in other examples.

[0867] From the above description of the embodiments, it is apparent that the above-described method of the embodiments can be realized by means of software and general-purpose hardware platforms, and of course, can also be realized by hardware, but in many cases, the former is a better embodiment. Based on such an understanding, the technical solutions of the present application can be embodied in the form of a computer software product, which is stored in a storage medium (such as a ROM / RAM, a magnetic disk, or an optical disk), and includes a plurality of instructions for causing a terminal (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the method described in each embodiment of the present application.

[0868] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-described specific embodiments, and the above-described specific embodiments are merely illustrative, rather than limiting, and those of ordinary skill in the art can make many forms under the inspiration of the present application without departing from the scope of the present application and the scope protected by the claims, which are all within the scope of protection of the present application.

Claims

1. A method for configuring a physical sidelink feedback channel resource, characterized in that, Comprising: A first communication device sends a first signaling to a second communication device using a physical sidelink feedback channel (PSFCH) resource according to a first rule, the first signaling being used to instruct the second communication device to perform resource reselection; Wherein, the first signaling carries the following information: Position information of resource collision; The time domain resource position of the PSFCH resource is determined according to at least one of the following ways: According to a first time slot / subframe where a sidelink control information (SCI) sent by the second communication device is located to determine the time domain resource position of the PSFCH resource; According to a second time slot / subframe where the collided resource reserved by the second communication device is located to determine the time domain resource position of the PSFCH resource. 2.The physical sidelink feedback channel resource configuration method of claim 1, wherein, The first rule includes at least one of the following: The first communication device detects that the resource selected or reserved by the second communication device collides with the resource selected or reserved by the first communication device; The first communication device detects that the resource selected or reserved by the third communication device collides with the resource selected or reserved by the second communication device; The first communication device detects that the uplink transmission resource of the first communication device collides with the resource selected or reserved by the second communication device; The first communication device detects that the uplink transmission resource of the third communication device collides with the resource selected or reserved by the second communication device; Wherein, the third communication device is another communication device other than the first communication device.

3. The physical sidelink feedback channel resource configuration method of claim 1 or 2, wherein, The resource collision includes at least one of the following: Partially or completely overlapping in time domain resource; Partially or completely overlapping in frequency domain resource.

4. The method of physical sidelink feedback channel resource configuration of claim 1, wherein, The position information of the resource collision includes at least one of the following: Part / all of the resource in the Nth / first K periods of the periodically reserved resource; The Mth resource in the Nth / first K periods of the periodically reserved resource; The first / last M resources in the Nth / first K periods of the periodically reserved resource; The Mth resource of the aperiodically reserved resource; All or part of the resource of the aperiodically reserved resource; The first / last M resources of the aperiodically reserved resource; Wherein, N, K, and M are positive integers. 5.The physical sidelink feedback channel resource configuration method of claim 1, wherein, The PSFCH resource occupies one or two symbols in time domain; Wherein, in the case that the PSFCH resource occupies two symbols in time domain, the resource on each symbol is used to transmit different information.

6. The method of physical sidelink feedback channel resource configuration of claim 1, wherein, The determination of the time domain resource position of the PSFCH resource according to the first time slot / subframe where the SCI sent by the second communication device is located includes at least one of the following: In the case that there is a first PSFCH resource in the first time slot / subframe, the first signaling is determined to be transmitted using the first PSFCH resource; In the case that there is no PSFCH resource in the first time slot / subframe, the first signaling is transmitted using the PSFCH resource closest to the first time slot / subframe; The first signaling is transmitted using the PSFCH resource in the Lth time slot / subframe after the first time slot; transmit the first signaling using a PSFCH resource closest to an Lth time slot / subframe after the first time slot; wherein the closest PSFCH resource is before or after the Lth time slot / subframe after the first time slot; transmit the first signaling using at least one PSFCH resource within a third preset time length after the first time slot; wherein L is a positive integer.

7. The method of physical sidelink feedback channel resource configuration of claim 1, wherein, The time domain resource position of the PSFCH resource is determined according to at least one of the following: transmit the first signaling on a PSFCH resource before U time slots / subframes before the second time slot where the collided resource reserved by the second communication device is located or within a fourth preset time length; transmit the first signaling on a PSFCH resource closest to the second time slot where the collided resource reserved by the second communication device is located; transmit the first signaling on a PSFCH resource closest to H time slots / subframes before or after the second time slot where the collided resource reserved by the second communication device is located; select X PSFCH resources as second PSFCH resources on a PSFCH resource before R time slots / subframes before the second time slot where the collided resource reserved by the second communication device is located or within a fifth preset time length, and transmit the first signaling on the second PSFCH resources; wherein U, H, R, and X are positive integers. 8.The physical sidelink feedback channel resource configuration method of claim 1, wherein, The frequency domain resource position of the PSFCH resource is determined according to at least one of the following: determine the frequency domain resource position of the PSFCH resource according to SCI sent by the second communication device to indicate the reserved resource; determine the frequency domain resource position of the PSFCH resource according to a physical sidelink shared channel (PSSCH) associated with SCI sent by the second communication device to indicate the reserved resource; determine the frequency domain resource position of the PSFCH resource according to the location of the collided resource reserved by the second communication device; determine the frequency domain resource position of the PSFCH resource according to the location of the non-collided resource reserved by the second communication device.

9. The method of physical sidelink feedback channel resource configuration according to claim 8, wherein, The frequency domain resource position of the PSFCH resource is determined according to at least one of the following: determine the frequency domain resource position of the PSFCH resource according to a starting or ending or center frequency domain resource of the SCI. 10.A method for configuring a physical sidelink feedback channel resource according to claim 8, characterized in that, The frequency domain resource position of the PSFCH resource is determined according to at least one of the following: determine the frequency domain resource position of the PSFCH resource according to a starting or ending or center frequency domain resource of the PSSCH. 11.The physical sidelink feedback channel resource configuration method of claim 8, wherein, The frequency domain resource position of the PSFCH resource is determined according to at least one of the following: determine the frequency domain resource position of the PSFCH resource according to a starting or ending or center frequency domain resource of the collided resource. 12.The physical sidelink feedback channel resource configuration method of claim 8, wherein, The frequency domain resource position of the PSFCH resource is determined according to the position of the resource reserved by the second communication device and in which no collision occurs, including at least one of the following: The frequency domain resource position of the PSFCH resource is determined by taking the starting, ending or center frequency domain resource of the earliest resource in which no collision occurs as a reference point; The frequency domain resource position of the PSFCH resource is determined by taking the starting, ending or center frequency domain resource of the earliest resource in which no collision occurs as a reference point; The frequency domain resource position of the PSFCH resource is determined by taking the starting, ending or center frequency domain resource of the earliest resource in which no collision occurs as a reference point; The frequency domain resource position of the PSFCH resource is determined by taking the starting, ending or center frequency domain resource of the earliest resource in which no collision occurs as a reference point.

13. The method of physical sidelink feedback channel resource configuration of claim 1, wherein, The PSFCH resource occupies one or more PRBs in the frequency domain. 14.A method for configuring a physical sidelink feedback channel resource according to claim 13, characterized in that, In the case where the PSFCH resource occupies one PRB in the frequency domain, at least one of the following is met: Each code point of the first signaling corresponds to at least one information meaning, each information meaning corresponds to at least one M_CS value, and each M_CS value corresponds to a cyclic prefix index value / cyclic prefix, wherein the first interval between each M_CS value corresponding to a cyclic prefix index value / cyclic prefix is the same, and the first interval is configured by the network side / high layer; A default code point configured by the network side / high layer is obtained to serve as a reference code point for demodulating the first signaling, wherein the reference code point corresponds to a default state, and the reference code point corresponds to a configured M_CS value; The number of first signaling transmissions or the number of PSFCHs supported by the same communication device for each PRB configured by the network side / high layer is obtained; The number of cyclic prefix pairs supported by each PRB is obtained by the network side / high layer; The number of first signaling transmissions or the number of PSFCH transmissions supported by each PRB is obtained by the network side / high layer; The starting index value of the cyclic prefix pair corresponding to each PRB is obtained by the network side / high layer; The number of communication devices supporting the transmission of the first signaling for each PRB is obtained by the network side / high layer. 15.The physical sidelink feedback channel resource configuration method of claim 13, wherein, In the case where the PSFCH resource occupies multiple PRBs in the frequency domain, at least one of the following is met: Each code point of the first signaling corresponds to at least one information meaning, each information meaning corresponds to at least one M_CS value, and each M_CS value corresponds to a cyclic prefix index value / cyclic prefix; Each PRB is associated with at least one code point; Each PRB carries different information, and each PRB is associated with at least one indication information; The number of first signaling transmissions or the number of PSFCHs supported by the same communication device for each W PRB configured by the network side / high layer is obtained; The number of cyclic prefix pairs supported by each W PRB is obtained by the network side / high layer; The number of first signaling transmissions or the number of PSFCH transmissions supported by each W PRB is obtained by the network side / high layer; The starting index value of the cyclic prefix pair corresponding to each W PRB is obtained by the network side / high layer; obtaining a number of communication devices supporting transmission of the first signaling per W PRBs configured by the network side / high layer; the second interval between the cyclic prefix index value / cyclic prefix corresponding to the M_CS value is the same on the same PRB, and the second interval is configured by the network side / high layer; obtaining a default code point configured by the network side / high layer as a reference code point for demodulating the first signaling, the reference code point corresponding to a default state, and the reference code point corresponding to a configured M_CS value; wherein W is a positive integer.

16. The method of physical sidelink feedback channel resource configuration of claim 1, wherein, The multiplexing mode of the PSFCH resource includes at least one of the following: Frequency division multiplexing mode; Code division multiplexing mode; Time division multiplexing mode.

17. The method of physical sidelink feedback channel resource configuration according to claim 16, wherein, The frequency division multiplexing mode satisfies at least one of the following: Each communication device uses different PRBs on the PFSCH when transmitting the first signaling; The PRBs used by different communication devices when transmitting the first signaling are continuous or discrete on the PSFCH.

18. The method of physical sidelink feedback channel resource configuration of claim 16, wherein, The code division multiplexing mode satisfies at least one of the following: The first signaling transmission of multiple communication devices or the PSFCH transmission is multiplexed on the same PRB or multiple PRBs; obtaining a number of cyclic prefix pairs corresponding to each V PRB configured by the network side / high layer; obtaining a number of first signaling transmissions from different communication devices or a number of PSFCH transmissions supported by each V PRB configured by the network side / high layer; obtaining a starting index value of a cyclic prefix pair corresponding to a code point of the first signaling of different communication devices per V PRB configured by the network side / high layer; obtaining an M_CS value corresponding to a code point of the first signaling of different communication devices per V PRB configured by the network side / high layer, each M_CS value corresponding to a cyclic prefix index value; the M_CS values corresponding to the code points of the first signaling of the same communication device come from the same cyclic prefix pair; obtaining a number of communication devices supporting transmission of the first signaling per V PRB configured by the network side / high layer; The third interval between the cyclic prefix index value / cyclic prefix corresponding to the M_CS of different communication devices remains the same on each V PRB, and the third interval is configured by the network side / high layer; wherein V is a positive integer.

19. The method of physical sidelink feedback channel resource configuration of claim 16, wherein, The time division multiplexing mode satisfies at least one of the following: Different communication devices use resources on different symbols for transmission of the first signaling; The same communication device uses resources on multiple symbols for transmission of the first signaling, and the information transmitted on each symbol is different; The same communication device uses resources on multiple symbols for transmission of the first signaling, and the information transmitted on each symbol is the same.

20. The method of physical sidelink feedback channel resource configuration of claim 1, wherein, The sequence length of the PSFCH resource or the sequence length of the PSFCH transmission or the sequence length of the first signaling transmission is determined by at least one of the following: The number of code points or indication states corresponding to the first signaling transmission; The number of code points or indication states corresponding to the first signaling transmission of multiple communication devices multiplexed on Y PRBs; The number of code points corresponding to at least one PRB when transmitting the first signaling; The number of code points or indication states corresponding to at least one PRB when multiple user equipment transmit the first signaling and are multiplexed on Y PRBs; wherein Y is a positive integer. 21.The physical sidelink feedback channel resource configuration method of claim 1, wherein, The configuration mode of the PSFCH resource includes at least one of the following: Configured in units of resource pools; Configured in units of BWP; Configured in units of system bandwidth; Independently configured for one or more transmission types; Unified configuration for multiple transmission types, and the state interpretation of PSFCH resources needs to be independently defined for one or more transmission types; Independently configured for resource collision types; Independently configured for HARQ feedback mode types. 22.A method for configuring a physical sidelink feedback channel resource, the method comprising: Comprise: The second communication device receives first signaling on the physical sidelink feedback channel (PSFCH) resource, wherein the first signaling is used to instruct the second communication device to perform resource reselection; Wherein, the first signaling carries an indication of the following information: Position information of resource collision; The time domain resource position of the PSFCH resource is determined according to at least one of the following ways: According to the first time slot / subframe where the sidelink control information (SCI) indicating the reserved resource is sent by the second communication device, the time domain resource position of the PSFCH resource is determined; According to the second time slot / subframe where the collided resource reserved by the second communication device is located, the time domain resource position of the PSFCH resource is determined.

23. The physical sidelink feedback channel resource configuration method of claim 22, wherein, The PSFCH resource occupies one or two symbols in the time domain; Wherein, in the case that the PSFCH resource occupies two symbols in the time domain, the resources on each symbol are used to transmit different information.

24. The physical sidelink feedback channel resource configuration method of claim 22, wherein, The PSFCH resource occupies one or more PRBs in the frequency domain.

25. The physical sidelink feedback channel resource configuration method of claim 24, wherein, In the case that the PSFCH resource occupies one PRB in the frequency domain, at least one of the following is met: Each code point of the first signaling corresponds to at least one information meaning, each information meaning corresponds to at least one M_CS value, and each M_CS value corresponds to a cyclic prefix index value / cyclic prefix. The first interval between each M_CS value corresponding to the cyclic prefix index value / cyclic prefix is the same, and the first interval is configured by the network side / high layer; A default code point configured by the network side / high layer is obtained as a reference code point for demodulating the first signaling, the reference code point corresponds to a default state, and the reference code point corresponds to a configured M_CS value; The first signaling transmission quantity or the PSFCH quantity supported by each PRB for transmission of the same communication device is obtained by the network side / high layer configuration; The number of cyclic prefix pairs supported by each PRB is obtained by the network side / high layer configuration; The first signaling transmission quantity or the PSFCH transmission quantity supported by each PRB is obtained by the network side / high layer configuration; The starting index value of the cyclic prefix pair corresponding to each PRB is obtained by the network side / high layer configuration; The number of communication devices supporting the transmission of the first signaling for each PRB is obtained by the network side / high layer configuration.

26. The method of physical sidelink feedback channel resource configuration of claim 24, wherein, In the case that the PSFCH resource occupies multiple PRBs in the frequency domain, at least one of the following is met: Each code point of the first signaling corresponds to at least one information meaning, each information meaning corresponds to at least one M_CS value, and each M_CS value corresponds to a cyclic prefix index value / cyclic prefix; Each PRB is associated with at least one code point; Each PRB carries different information, and each PRB is associated with at least one indication information; obtaining a first signaling or a number of PSFCHs of the same communication device supported by each W PRB configured by the network side / high layer; obtaining a number of cyclic prefix pairs supported by each W PRB configured by the network side / high layer; obtaining a number of first signaling transmissions or a number of PSFCH transmissions supported by each W PRB configured by the network side / high layer; obtaining a starting index value of a cyclic prefix pair corresponding to each W PRB configured by the network side / high layer; obtaining a number of communication devices supporting the transmission of the first signaling by each W PRB configured by the network side / high layer; the second interval between the cyclic prefix index value / M_CS corresponding to the M_CS value is the same on the same PRB, and the second interval is configured by the network side / high layer; obtaining a default code point configured by the network side / high layer as a reference code point for demodulating the first signaling, wherein the reference code point corresponds to a default state, and the reference code point corresponds to a configured M_CS value. Wherein, W is a positive integer.

27. The physical sidelink feedback channel resource configuration method of claim 22, wherein, The multiplexing mode of the PSFCH resource includes at least one of the following: Frequency division multiplexing mode; Code division multiplexing mode; Time division multiplexing mode.

28. The physical sidelink feedback channel resource configuration method of claim 27, wherein, The frequency division multiplexing mode satisfies at least one of the following: Each communication device transmits first signaling using different PRBs on the PFSCH; The PRBs used by different communication devices to transmit the first signaling are continuous or discrete on the PSFCH.

29. The physical sidelink feedback channel resource configuration method of claim 27, wherein, The code division multiplexing mode satisfies at least one of the following: The first signaling transmission or the PSFCH transmission of multiple communication devices is multiplexed on the same or multiple PRBs; obtaining a number of cyclic prefix pairs corresponding to each V PRB configured by the network side / high layer; obtaining a number of first signaling transmissions or a number of PSFCH transmissions from different communication devices supported by each V PRB configured by the network side / high layer; obtaining a starting index value of a cyclic prefix pair corresponding to the code point of the first signaling of different communication devices of each V PRB configured by the network side / high layer; obtaining an M_CS value corresponding to the code point of the first signaling of different communication devices of each V PRB configured by the network side / high layer, wherein each M_CS value corresponds to a cyclic prefix index value; and the M_CS values corresponding to the code point of the first signaling of the same communication device come from the same cyclic prefix pair; obtaining a number of communication devices supporting the transmission of the first signaling by each V PRB configured by the network side / high layer; The third interval between the cyclic prefix index value / M_CS corresponding to the M_CS of different communication devices remains the same on each V PRB, and the third interval is configured by the network side / high layer. Wherein, V is a positive integer.

30. The method of physical sidelink feedback channel resource configuration of claim 27, wherein, The time division multiplexing mode satisfies at least one of the following: Different communication devices use resources on different symbols to transmit the first signaling; The same communication device uses resources on multiple symbols to transmit the first signaling, and the information transmitted on each symbol is different; The same communication device uses resources on multiple symbols to transmit the first signaling, and the information transmitted on each symbol is the same. 31.The physical sidelink feedback channel resource configuration method of claim 22, wherein, The sequence length of the PSFCH resource or the sequence length of the PSFCH transmission or the sequence length of the first signaling transmission is determined by one of the following: The code point or the number of indication states corresponding to the first signaling transmission; The number of code points or the number of indication states corresponding to the first signaling transmission when the plurality of communication devices transmit the first signaling multiplexed on Y PRBs; The number of code points corresponding to the first signaling transmission on at least one PRB; The number of code points or the number of indication states corresponding to the first signaling transmission when the plurality of user equipment transmit the first signaling multiplexed on Y PRBs; Y is a positive integer. 32.The physical sidelink feedback channel resource configuration method of claim 22, wherein, The configuration mode of the PSFCH resource includes at least one of the following: Configured in resource pools; Configured in BWP; Configured in system bandwidth; Independently configured for one or more transmission types; Unified configuration for multiple transmission types, and the state interpretation of the PSFCH resource needs to be independently defined for a certain transmission type or certain transmission types; Independently configured for resource collision types; Independently configured for HARQ feedback mode types.

33. A physical sidelink feedback channel resource configuration device, characterized in that, Comprise: A first sending unit configured to send first signaling to a second communication device using a physical sidelink feedback channel (PSFCH) resource according to a first rule, wherein the first signaling is used to instruct the second communication device to perform resource reselection; The first signaling carries an indication of one of the following information: Position information of resource collision; The time domain resource position of the PSFCH resource is determined according to at least one of the following modes: According to the first time slot / subframe in which the second communication device sends the sidelink control information (SCI) used to indicate the reserved resource, the time domain resource position of the PSFCH resource is determined; According to the second time slot / subframe in which the second communication device reserves the collided resource, the time domain resource position of the PSFCH resource is determined.

34. An apparatus for physical sidelink feedback channel resource configuration, the apparatus comprising: means for receiving a configuration message from a base station; and means for determining a set of physical sidelink feedback channel resources based on the configuration message. Comprise: A first receiving unit configured to receive first signaling on a physical sidelink feedback channel (PSFCH) resource, wherein the first signaling is used to instruct a second communication device to perform resource reselection; The first signaling carries an indication of one of the following information: Position information of resource collision; The time domain resource position of the PSFCH resource is determined according to at least one of the following modes: According to the first time slot / subframe in which the second communication device sends the sidelink control information (SCI) used to indicate the reserved resource, the time domain resource position of the PSFCH resource is determined; According to the second time slot / subframe in which the second communication device reserves the collided resource, the time domain resource position of the PSFCH resource is determined.

35. A first communication device, characterized by: Comprise a processor, a memory, and a program or instruction stored on the memory and executable on the processor, wherein the program or instruction is executed by the processor to implement the steps of the physical sidelink feedback channel resource configuration method according to any one of claims 1 to 21.

36. A second communication device, characterized by Comprise a processor, a memory, and a program or instruction stored on the memory and executable on the processor, wherein the program or instruction is executed by the processor to implement the steps of the physical sidelink feedback channel resource configuration method according to any one of claims 22 to 32.

37. A readable storage medium characterized by, The readable storage medium stores programs or instructions, which are executed by the processor to implement the physical sidelink feedback channel resource configuration method in any one of claims 1 to 21, or implement the steps of the physical sidelink feedback channel resource configuration method in any one of claims 22 to 32.

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