SL PRS resource determination method and apparatus, SL PRS resource indication method and apparatus, and storage medium

Abstract

The present disclosure provides an SL PRS resource determination method and apparatus, an SL PRS resource indication method and apparatus, and a storage medium. The SL PRS resource determination method comprises: a terminal receiving downlink control information (DCI) sent by a network device; and on the basis of the DCI, determining an SL PRS resource allocated to the terminal by the network device.

Description

SL PRS resource determination method, indication method, device and storage medium

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 202311014128.9 filed on August 11, 2023, entitled “Method for determining, method for indicating, device and storage medium for SL PRS resources”, which is incorporated herein by reference in its entirety. Technical Field

[0003] The present disclosure relates to the field of wireless communication technologies, and in particular to a method for determining, indicating, device, and storage medium for SL PRS resources. Background Art

[0004] To support positioning in sidelink (SL) systems, a reference signal for positioning needs to be introduced, defined as the sidelink positioning reference signal (SL PRS). After the introduction of SL PRS, for sidelink systems within network coverage, the network side needs to further indicate the allocation of SL PRS resources so that the terminal can determine the SL PRS resources to use. However, there is currently no clear technical solution for this.

[0005] Summary of the Invention

[0006] The present disclosure provides a method for determining, indicating, apparatus and storage medium for SL PRS resources, so as to solve the problem of how to indicate SL PRS resource allocation.

[0007] In a first aspect, the present disclosure provides a method for determining a direct link positioning reference signal (SL PRS) resource, which is applied to a terminal and includes:

[0008] Receive downlink control information DCI sent by the network device;

[0009] Determine, based on the DCI, the SL PRS resources allocated by the network device to the terminal.

[0010] In some embodiments, the DCI includes one or more of the following:

[0011] A first DCI, where the first DCI is used to indicate an SL PRS resource in a shared resource pool;

[0012] The second DCI is used to indicate the SL PRS resources in the dedicated resource pool.

[0013] In some embodiments, the first DCI includes a first information field, where the first information field is used to indicate whether there is an SL PRS resource in the time slot where at least one physical direct link shared channel PSSCH transmission is located.

[0014] In some embodiments, the first information field includes a configuration index field and / or a hybrid automatic repeat request HARQ process number field.

[0015] In some embodiments, the configuration index field uses 3 bits to indicate whether there are SL PRS resources in the time slots where up to 3 PSSCH transmissions are located.

[0016] In some embodiments, 1 bit is used in the HARQ process number field to indicate activation configuration authorization, and the other 3 bits except the 1 bit are used to indicate whether SL PRS resources exist in the time slot where up to 3 PSSCH transmissions are located.

[0017] In some embodiments, the cyclic redundancy check code CRC in the first DCI is scrambled by the direct link radio network temporary identifier SL-RNTI, the direct link configuration scheduling radio network temporary identifier SL-CS-RNTI or the radio network temporary identifier SL-Pos-RNTI for direct link positioning.

[0018] In some embodiments, the first information field includes an SL PRS indication field, and the CRC in the first DCI is scrambled by SL-Pos-RNTI.

[0019] In some embodiments, when the CRC in the first DCI is scrambled by SL-Pos-RNTI, the first DCI is used to indicate SL PRS resources.

[0020] In some embodiments, the first DCI is associated with a third DCI, and the PSSCH resources indicated by the third DCI and the SL PRS resources indicated by the first DCI are located in the same time slot.

[0021] In some embodiments, the association relationship between the first DCI and the third DCI is predefined by the system or indicated by the network side.

[0022] In some embodiments, the second DCI includes a resource pool index field and / or a time interval field.

[0023] In some embodiments, the size of the resource pool index field in the second DCI is the same as the size of the resource pool index field in the first DCI; and / or,

[0024] The length of the second DCI is the same as that of the first DCI.

[0025] In some embodiments, the CRC in the second DCI is scrambled by a radio network temporary identifier SL-Pos-DP-RNTI for a direct link positioning dedicated resource pool.

[0026] In a second aspect, the present disclosure further provides a method for indicating a direct link positioning reference signal (SL PRS) resource, which is applied to a network device and includes:

[0027] Send downlink control information DCI to the terminal, where the DCI is used to indicate the SL PRS resources allocated by the network device to the terminal.

[0028] In some embodiments, the DCI includes one or more of the following:

[0029] A first DCI, where the first DCI is used to indicate an SL PRS resource in a shared resource pool;

[0030] The second DCI is used to indicate the SL PRS resources in the dedicated resource pool.

[0031] In some embodiments, the first DCI includes a first information field, where the first information field is used to indicate whether there is an SL PRS resource in the time slot where at least one physical direct link shared channel PSSCH transmission is located.

[0032] In some embodiments, the first information field includes a configuration index field and / or a hybrid automatic repeat request HARQ process number field.

[0033] In some embodiments, the configuration index field uses 3 bits to indicate whether there are SL PRS resources in the time slots where up to 3 PSSCH transmissions are located.

[0034] In some embodiments, 1 bit is used in the HARQ process number field to indicate activation configuration authorization, and the other 3 bits except the 1 bit are used to indicate whether SL PRS resources exist in the time slot where up to 3 PSSCH transmissions are located.

[0035] In some embodiments, the cyclic redundancy check code CRC in the first DCI is scrambled by the direct link radio network temporary identifier SL-RNTI, the direct link configuration scheduling radio network temporary identifier SL-CS-RNTI or the radio network temporary identifier SL-Pos-RNTI for direct link positioning.

[0036] In some embodiments, the first information field includes an SL PRS indication field, and the CRC in the first DCI is scrambled by SL-Pos-RNTI.

[0037] In some embodiments, when the CRC in the first DCI is scrambled by SL-Pos-RNTI, the first DCI is used to indicate SL PRS resources.

[0038] In some embodiments, the first DCI is associated with a third DCI, and the PSSCH resources indicated by the third DCI and the SL PRS resources indicated by the first DCI are located in the same time slot.

[0039] In some embodiments, the association relationship between the first DCI and the third DCI is predefined by the system or indicated by the network side.

[0040] In some embodiments, the second DCI includes a resource pool index field and / or a time interval field.

[0041] In some embodiments, the size of the resource pool index field in the second DCI is the same as the size of the resource pool index field in the first DCI; and / or,

[0042] The length of the second DCI is the same as that of the first DCI.

[0043] In some embodiments, the CRC in the second DCI is scrambled by a radio network temporary identifier SL-Pos-DP-RNTI for a direct link positioning dedicated resource pool.

[0044] In a third aspect, the present disclosure further provides a terminal, including a memory, a transceiver, and a processor;

[0045] A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations:

[0046] Receive downlink control information DCI sent by the network device;

[0047] Determine, based on the DCI, the SL PRS resources allocated by the network device to the terminal.

[0048] In some embodiments, the DCI includes one or more of the following:

[0049] A first DCI, where the first DCI is used to indicate an SL PRS resource in a shared resource pool;

[0050] The second DCI is used to indicate the SL PRS resources in the dedicated resource pool.

[0051] In some embodiments, the first DCI includes a first information field, where the first information field is used to indicate whether there is an SL PRS resource in the time slot where at least one physical direct link shared channel PSSCH transmission is located.

[0052] In some embodiments, the first information field includes a configuration index field and / or a hybrid automatic repeat request HARQ process number field.

[0053] In some embodiments, the configuration index field uses 3 bits to indicate whether there are SL PRS resources in the time slots where up to 3 PSSCH transmissions are located.

[0054] In some embodiments, 1 bit is used in the HARQ process number field to indicate activation configuration authorization, and the other 3 bits except the 1 bit are used to indicate whether SL PRS resources exist in the time slot where up to 3 PSSCH transmissions are located.

[0055] In some embodiments, the cyclic redundancy check code CRC in the first DCI is scrambled by the direct link radio network temporary identifier SL-RNTI, the direct link configuration scheduling radio network temporary identifier SL-CS-RNTI or the radio network temporary identifier SL-Pos-RNTI for direct link positioning.

[0056] In some embodiments, the first information field includes an SL PRS indication field, and the CRC in the first DCI is scrambled by SL-Pos-RNTI.

[0057] In some embodiments, when the CRC in the first DCI is scrambled by SL-Pos-RNTI, the first DCI is used to indicate SL PRS resources.

[0058] In some embodiments, the first DCI is associated with a third DCI, and the PSSCH resources indicated by the third DCI and the SL PRS resources indicated by the first DCI are located in the same time slot.

[0059] In some embodiments, the association relationship between the first DCI and the third DCI is predefined by the system or indicated by the network side.

[0060] In some embodiments, the second DCI includes a resource pool index field and / or a time interval field.

[0061] In some embodiments, the size of the resource pool index field in the second DCI is the same as the size of the resource pool index field in the first DCI; and / or,

[0062] The length of the second DCI is the same as that of the first DCI.

[0063] In some embodiments, the CRC in the second DCI is scrambled by a radio network temporary identifier SL-Pos-DP-RNTI for a direct link positioning dedicated resource pool.

[0064] In a fourth aspect, the present disclosure further provides a network device, including a memory, a transceiver, and a processor;

[0065] A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations:

[0066] Send downlink control information DCI to the terminal, where the DCI is used to indicate the SL PRS resources allocated by the network device to the terminal.

[0067] In some embodiments, the DCI includes one or more of the following:

[0068] A first DCI, where the first DCI is used to indicate an SL PRS resource in a shared resource pool;

[0069] The second DCI is used to indicate the SL PRS resources in the dedicated resource pool.

[0070] In some embodiments, the first DCI includes a first information field, where the first information field is used to indicate whether there is an SL PRS resource in the time slot where at least one physical direct link shared channel PSSCH transmission is located.

[0071] In some embodiments, the first information field includes a configuration index field and / or a hybrid automatic repeat request HARQ process number field.

[0072] In some embodiments, the configuration index field uses 3 bits to indicate whether there are SL PRS resources in the time slots where up to 3 PSSCH transmissions are located.

[0073] In some embodiments, 1 bit is used in the HARQ process number field to indicate activation configuration authorization, and the other 3 bits except the 1 bit are used to indicate whether SL PRS resources exist in the time slot where up to 3 PSSCH transmissions are located.

[0074] In some embodiments, the cyclic redundancy check code CRC in the first DCI is scrambled by the direct link radio network temporary identifier SL-RNTI, the direct link configuration scheduling radio network temporary identifier SL-CS-RNTI or the radio network temporary identifier SL-Pos-RNTI for direct link positioning.

[0075] In some embodiments, the first information field includes an SL PRS indication field, and the CRC in the first DCI is scrambled by SL-Pos-RNTI.

[0076] In some embodiments, when the CRC in the first DCI is scrambled by SL-Pos-RNTI, the first DCI is used to indicate SL PRS resources.

[0077] In some embodiments, the first DCI is associated with a third DCI, and the PSSCH resources indicated by the third DCI and the SL PRS resources indicated by the first DCI are located in the same time slot.

[0078] In some embodiments, the association relationship between the first DCI and the third DCI is predefined by the system or indicated by the network side.

[0079] In some embodiments, the second DCI includes a resource pool index field and / or a time interval field.

[0080] In some embodiments, the size of the resource pool index field in the second DCI is the same as the size of the resource pool index field in the first DCI; and / or,

[0081] The length of the second DCI is the same as that of the first DCI.

[0082] In some embodiments, the CRC in the second DCI is scrambled by a radio network temporary identifier SL-Pos-DP-RNTI for a direct link positioning dedicated resource pool.

[0083] In a fifth aspect, the present disclosure further provides a device for determining a direct link positioning reference signal SL PRS resource, including:

[0084] A receiving unit, configured to receive downlink control information DCI sent by a network device;

[0085] A determining unit is used to determine the SL PRS resources allocated by the network device to the terminal based on the DCI.

[0086] In some embodiments, the DCI includes one or more of the following:

[0087] A first DCI, where the first DCI is used to indicate an SL PRS resource in a shared resource pool;

[0088] The second DCI is used to indicate the SL PRS resources in the dedicated resource pool.

[0089] In some embodiments, the first DCI includes a first information field, where the first information field is used to indicate whether there is an SL PRS resource in the time slot where at least one physical direct link shared channel PSSCH transmission is located.

[0090] In some embodiments, the first information field includes a configuration index field and / or a hybrid automatic repeat request HARQ process number field.

[0091] In some embodiments, the configuration index field uses 3 bits to indicate whether there are SL PRS resources in the time slots where up to 3 PSSCH transmissions are located.

[0092] In some embodiments, 1 bit is used in the HARQ process number field to indicate activation configuration authorization, and the other 3 bits except the 1 bit are used to indicate whether SL PRS resources exist in the time slot where up to 3 PSSCH transmissions are located.

[0093] In some embodiments, the cyclic redundancy check code CRC in the first DCI is scrambled by the direct link radio network temporary identifier SL-RNTI, the direct link configuration scheduling radio network temporary identifier SL-CS-RNTI or the radio network temporary identifier SL-Pos-RNTI for direct link positioning.

[0094] In some embodiments, the first information field includes an SL PRS indication field, and the CRC in the first DCI is scrambled by SL-Pos-RNTI.

[0095] In some embodiments, when the CRC in the first DCI is scrambled by SL-Pos-RNTI, the first DCI is used to indicate SL PRS resources.

[0096] In some embodiments, the first DCI is associated with a third DCI, and the PSSCH resources indicated by the third DCI and the SL PRS resources indicated by the first DCI are located in the same time slot.

[0097] In some embodiments, the association relationship between the first DCI and the third DCI is predefined by the system or indicated by the network side.

[0098] In some embodiments, the second DCI includes a resource pool index field and / or a time interval field.

[0099] In some embodiments, the size of the resource pool index field in the second DCI is the same as the size of the resource pool index field in the first DCI; and / or,

[0100] The length of the second DCI is the same as that of the first DCI.

[0101] In some embodiments, the CRC in the second DCI is scrambled by a radio network temporary identifier SL-Pos-DP-RNTI for a direct link positioning dedicated resource pool.

[0102] In a sixth aspect, the present disclosure further provides a device for indicating a direct link positioning reference signal (SL PRS) resource, including:

[0103] The sending unit is used to send downlink control information DCI to the terminal, where the DCI is used to indicate the SL PRS resources allocated by the network device to the terminal.

[0104] In some embodiments, the DCI includes one or more of the following:

[0105] A first DCI, where the first DCI is used to indicate an SL PRS resource in a shared resource pool;

[0106] The second DCI is used to indicate the SL PRS resources in the dedicated resource pool.

[0107] In some embodiments, the first DCI includes a first information field, where the first information field is used to indicate whether there is an SL PRS resource in the time slot where at least one physical direct link shared channel PSSCH transmission is located.

[0108] In some embodiments, the first information field includes a configuration index field and / or a hybrid automatic repeat request HARQ process number field.

[0109] In some embodiments, the configuration index field uses 3 bits to indicate whether there are SL PRS resources in the time slots where up to 3 PSSCH transmissions are located.

[0110] In some embodiments, 1 bit is used in the HARQ process number field to indicate activation configuration authorization, and the other 3 bits except the 1 bit are used to indicate whether SL PRS resources exist in the time slot where up to 3 PSSCH transmissions are located.

[0111] In some embodiments, the cyclic redundancy check code CRC in the first DCI is scrambled by the direct link radio network temporary identifier SL-RNTI, the direct link configuration scheduling radio network temporary identifier SL-CS-RNTI or the radio network temporary identifier SL-Pos-RNTI for direct link positioning.

[0112] In some embodiments, the first information field includes an SL PRS indication field, and the CRC in the first DCI is scrambled by SL-Pos-RNTI.

[0113] In some embodiments, when the CRC in the first DCI is scrambled by SL-Pos-RNTI, the first DCI is used to indicate SL PRS resources.

[0114] In some embodiments, the first DCI is associated with a third DCI, and the PSSCH resources indicated by the third DCI and the SL PRS resources indicated by the first DCI are located in the same time slot.

[0115] In some embodiments, the association relationship between the first DCI and the third DCI is predefined by the system or indicated by the network side.

[0116] In some embodiments, the second DCI includes a resource pool index field and / or a time interval field.

[0117] In some embodiments, the size of the resource pool index field in the second DCI is the same as the size of the resource pool index field in the first DCI; and / or,

[0118] The length of the second DCI is the same as that of the first DCI.

[0119] In some embodiments, the CRC in the second DCI is scrambled by a radio network temporary identifier SL-Pos-DP-RNTI for a direct link positioning dedicated resource pool.

[0120] In the seventh aspect, the present disclosure also provides a non-transitory readable storage medium, which stores a computer program, and the computer program is used to enable the processor to execute the SL PRS resource determination method described in the first aspect, or execute the SL PRS resource indication method described in the second aspect.

[0121] In the eighth aspect, the present disclosure also provides a communication device, in which a computer program is stored, and the computer program is used to enable the communication device to execute the SL PRS resource determination method described in the first aspect, or execute the SL PRS resource indication method described in the second aspect.

[0122] In the ninth aspect, the present disclosure also provides a processor-readable storage medium, which stores a computer program, and the computer program is used to enable the processor to execute the SL PRS resource determination method described in the first aspect, or execute the SL PRS resource indication method described in the second aspect.

[0123] In the tenth aspect, the present disclosure also provides a chip product, in which a computer program is stored, and the computer program is used to enable the chip product to execute the SL PRS resource determination method described in the first aspect, or execute the SL PRS resource indication method described in the second aspect.

[0124] The present disclosure provides a method for determining, indicating, apparatus and storage medium for SL PRS resources. The network device can indicate the allocated SL PRS resources to the terminal through DCI, so that the terminal can determine the allocation of SL PRS resources accordingly, and further complete the direct link positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0125] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or related technologies, the following is a brief introduction to the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0126] FIG1 is a flow chart of a method for determining SL PRS resources according to an embodiment of the present disclosure;

[0127] FIG2 is a flow chart of a method for indicating SL PRS resources according to an embodiment of the present disclosure;

[0128] FIG3 is an example diagram of resource indication provided by an embodiment of the present disclosure;

[0129] FIG4 is a schematic diagram of the structure of a terminal provided in an embodiment of the present disclosure;

[0130] FIG5 is a schematic diagram of the structure of a network device provided in an embodiment of the present disclosure;

[0131] FIG6 is a schematic structural diagram of an apparatus for determining SL PRS resources provided by an embodiment of the present disclosure;

[0132] FIG7 is a schematic structural diagram of an SL PRS resource indication device provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0133] In the embodiments of the present disclosure, the term "and / or" describes the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0134] In the embodiments of the present disclosure, the term "plurality" refers to two or more than two, and other quantifiers are similar thereto.

[0135] In the embodiments of the present disclosure, the terms "first," "second," and the like are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present disclosure can be implemented in an order other than that illustrated or described herein. Furthermore, the objects distinguished by "first" and "second" are generally of the same type, and do not limit the number of objects. For example, the first object can be one or more.

[0136] The following will be combined with the accompanying drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the embodiments described are only part of the embodiments of the present disclosure and not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present disclosure.

[0137] Currently, for sidelink systems within network coverage, the base station uses Downlink Control Information (DCI) format 3_0 signaling to indicate to the terminal the SL resources for data transmission. The terminal then uses these SL resources to communicate with other terminals. The information fields contained in DCI format 3_0 are shown in Table 1, including: resource pool index field, time interval field, time domain resource allocation field, frequency domain subchannel indication field, frequency domain resource allocation field, physical uplink control channel (PUCCH) resource indication field, time slot interval between the physical sidelink feedback channel (PSFCH) and PUCCH field, hybrid automatic repeat request (HARQ) process number field, new data indication field, configuration index field, and accumulated sidelink grant index field.

[0138] After the introduction of SL PRS, the network side needs to further indicate the allocation of SL PRS resources. The allocation of SL PRS resources may be inconsistent with the allocation of SL communication resources. Therefore, the relevant SL resource indication scheme cannot effectively distinguish between data resource allocation and SL PRS resource allocation. If the data and SL PRS transmission times are inconsistent, indication is even impossible.

[0139] Table 1: DCI format 3_0 format

[0140] FIG1 is a flow chart of a method for determining SL PRS resources according to an embodiment of the present disclosure. The method can be applied to a terminal. As shown in FIG1 , the method includes the following steps:

[0141] Step 100: Receive downlink control information DCI sent by a network device.

[0142] Step 101: Determine SL PRS resources allocated to a terminal by a network device based on DCI.

[0143] Specifically, the present disclosure proposes a solution to the problem of indicating SL PRS resource allocation. A network device (eg, a base station) may send a DCI to a terminal, and use the DCI to indicate the resource allocation status of the SL PRS.

[0144] In some embodiments, the DCI may simultaneously indicate resource allocation of a physical sidelink shared channel (PSSCH) (or SL PSSCH) and resource allocation of an SL PRS.

[0145] In some embodiments, the DCI includes one or more of the following:

[0146] A first DCI, where the first DCI is used to indicate SL PRS resources in the shared resource pool;

[0147] The second DCI is used to indicate the SL PRS resources in the dedicated resource pool.

[0148] Specifically, the DCI in the embodiments of the present disclosure can be used for a shared resource pool and / or a dedicated resource pool. The dedicated resource pool and the shared resource pool are two types of resource pools that can be used for SL-PRS transmission. In the present disclosure, the dedicated resource pool refers to a resource pool dedicated to SL PRS transmission, and the shared resource pool refers to a resource pool shared by SL PRS transmission and SL data transmission. The dedicated resource pool includes SL-PRS resources and control channel resources. The dedicated resource pool is only used to transmit SL-PRS and associated control channels / information (such as the physical sidelink control channel (PSCCH) or sidelink control information (SCI)). The shared resource pool includes SL-PRS resources, data transmission resources and associated control channels / information. The shared resource pool can transmit both SL-PRS and SL data, such as PSSCH or PSFCH.

[0149] The first DCI may be an existing DCI format 3_0, or a DCI designed based on DCI format 3_0, and is used to indicate SL PRS resources in the shared resource pool.

[0150] The second DCI may be a DCI different from the existing DCI format 3_0, and is used to indicate SL PRS resources in the dedicated resource pool.

[0151] In some embodiments, the network device may indicate the SL PRS resources by using different Radio Network Temporary Identifiers (RNTIs) to scramble the cyclic redundancy check code (CRC) of the DCI, using the bit value of a specific information field in the DCI to indicate the SL PRS resources, introducing the SL PRS indication field in the DCI, using a dedicated DCI, or a combination of multiple methods. The terminal may also determine the SL PRS resources based on the RNTI of the scrambled CRC, the bit value of the specific information field in the DCI, the SL PRS indication field, the dedicated DCI, or a combination of multiple methods.

[0152] The method for determining SL PRS resources provided in the embodiments of the present disclosure enables the network device to indicate the allocated SL PRS resources to the terminal through DCI, so that the terminal can determine the allocation of SL PRS resources accordingly, and further complete the through link positioning.

[0153] In some embodiments, the first DCI includes a first information field, and the first information field is used to indicate whether there is an SL PRS resource in the time slot where at least one PSSCH transmission is located.

[0154] Specifically, the first information field is not specifically limited here, and it can be one or some specific information fields in the DCI. The network device can use the first information field to indicate whether there are SL PRS resources in the time slot where at least one PSSCH transmission is located, so that the terminal can determine the allocation of SL PRS resources through the first information field.

[0155] In some embodiments, the number of PSSCH transmissions may be determined by the time domain resource allocation field in the DCI.

[0156] The presence of SL PRS resources in the time slot where a PSSCH transmission occurs can also be understood as including both data transmission and SL PRS transmission in one transmission (through link transmission). The absence of SL PRS resources in the time slot where a PSSCH transmission occurs can also be understood as including only data transmission and not SL PRS transmission in one transmission (through link transmission).

[0157] In some embodiments, assuming the number of PSSCH transmissions is n, the n bits in the first information field may indicate whether there is an SL PRS resource in the time slot where each PSSCH transmission occurs. The number of bits in the first information field may be greater than or equal to n.

[0158] In some embodiments, the first information field includes a configuration index field and / or a HARQ process number field.

[0159] In some embodiments, 3 bits are used in the configuration index field to indicate whether there are SL PRS resources in the time slots where up to 3 PSSCH transmissions are located.

[0160] For example, the configuration index field contains 3 bits, each bit corresponds to whether each transmission includes SL PRS transmission in up to 3 transmissions. The number of transmissions can be determined by the time domain resource allocation field in the DCI. Assuming that the time domain resource allocation field in the DCI indicates 3 transmissions, and the configuration index field indicates "010", it means that the first and third transmissions only include data transmission, and the second transmission includes both data transmission and SL PRS transmission; if the time domain resource allocation field in the DCI indicates 2 transmissions, then the 2 bits specified in the configuration index field may be effective, for example, only the first 2 bits are effective. At this time, if the configuration index field indicates "101", it means that the first transmission includes both data transmission and SL PRS transmission, and the second transmission includes only data transmission.

[0161] In some embodiments, one bit is used in the HARQ process number field to indicate activation of the configuration grant, and the other three bits except the one bit are used to indicate whether there are SL PRS resources in the time slots where up to three PSSCH transmissions are located.

[0162] For example, the HARQ process number field occupies 4 bits, and the first bit can be used to indicate the activation configuration authorization. Each of the last 3 bits corresponds to whether each transmission contains SL PRS in up to 3 transmissions, as shown in Table 2.

[0163] Table 2 HARQ process number field indication example

[0164] It should be noted that the above is an example, and it does not exclude the use of other bit values ​​to represent the corresponding transmission.

[0165] In some embodiments, the CRC in the first DCI may be scrambled by a direct link radio network temporary identifier (SL-RNTI), a direct link configuration scheduling radio network temporary identifier (SL-CS-RNTI), or a radio network temporary identifier for direct link positioning (SL-Pos-RNTI). The SL-Pos-RNTI may be any RNTI used for direct link positioning, and its specific name and form are not limited in this disclosure.

[0166] In some embodiments, the first information field includes an SL PRS indication field, and the CRC in the first DCI is scrambled by SL-Pos-RNTI.

[0167] For example, the SL PRS indication field may be a newly added information field dedicated to indicating SL PRS resources. The SL PRS indication field may include multiple bits (eg, 3 bits), which are used to indicate whether SL PRS transmission is included in at least one transmission.

[0168] The network device may use the SL-Pos-RNTI to scramble the CRC of the first DCI (including the SL PRS indication field), so that the terminal may determine the SL PRS resource based on the SL PRS indication field in the first DCI.

[0169] In some embodiments, when the CRC in the first DCI is scrambled by the SL-Pos-RNTI, the first DCI is used to indicate the SL PRS resources.

[0170] For example, the first DCI may be an existing DCI format 3_0, and the network device may scramble the CRC of the DCI through different RNTIs for different resource allocations. For example, the DCI format 3_0 whose CRC is scrambled by SL-Pos-RNTI is only used to indicate the resource allocation of SL PRS, and is not used to indicate the resource allocation of data transmission, that is, the time domain resource allocation domain and the frequency domain resource allocation domain in the DCI format 3_0 both indicate SL PRS resources; the DCI format 3_0 whose CRC is scrambled by SL-RNTI or SL-CS-RNTI can be used to indicate the resource allocation of data transmission.

[0171] In some embodiments, the first DCI is associated with a third DCI, and the PSSCH resources indicated by the third DCI and the SL PRS resources indicated by the first DCI are located in the same time slot.

[0172] For example, in the case where different resource allocations are indicated by CRC of DCI scrambled by different RNTIs, the first DCI only indicates SL PRS resources, and the third DCI only indicates PSSCH resources. The associated first DCI and third DCI can indicate that the resources indicated by the two DCIs are in the same time slot.

[0173] In some embodiments, the association relationship between the first DCI and the third DCI may be predefined by the system or indicated by the network side.

[0174] In some embodiments, the second DCI includes a resource pool index field and / or a time interval field.

[0175] Specifically, the dedicated resource pool does not include PSSCH resources. In this case, the network device can use a new DCI (second DCI) to indicate SL PRS resources. The terminal can determine the SL PRS resources in the dedicated resource pool according to the second DCI.

[0176] The second DCI contains at least a resource pool index field and / or a time interval field. The meanings of the resource pool index field and the time interval field are similar to those of DCI format 3_0, except that the resources indicated are different.

[0177] In some embodiments, the second DCI may further include other information fields to indicate more detailed SL PRS resource information. For example, the second DCI may include an indication of the time slot in which the SL PRS resource is located, or the symbol position of the SL PRS resource within the time slot, or the SL PRS resource index, or the comb value of the SL PRS resource, etc.

[0178] In some embodiments, the size of the resource pool index field in the second DCI is the same as the size of the resource pool index field in the first DCI; and / or the length of the second DCI is the same as the length of the first DCI. If the length of the second DCI is different from the length of the first DCI, the length of the second DCI may be padded to the same length as the first DCI.

[0179] In some embodiments, the CRC in the second DCI may be scrambled by a radio network temporary identifier (SL-Pos-DP-RNTI) for direct link positioning of a dedicated resource pool. SL-Pos-DP-RNTI may be any RNTI used for direct link positioning and for indicating SL PRS resources in a dedicated resource pool, and its specific name and form are not limited in this disclosure. When the terminal receives a DCI whose CRC is scrambled by SL-Pos-DP-RNTI, it can directly determine that the DCI indicates an SL PRS resource in a dedicated resource pool.

[0180] The present disclosure proposes a DCI design for a shared resource pool and / or a dedicated resource pool. By introducing a new RNTI, setting a special bit value, introducing a new SL PRS indication field, and other methods, it not only ensures compatibility with existing terminals, but also enables resource allocation that can simultaneously indicate SL communication and SL positioning for the shared resource pool; for the dedicated resource pool, it can further indicate the time domain location information of the SL PRS resources. It can be used for a variety of SL positioning technologies.

[0181] FIG2 is a flow chart of a method for indicating SL PRS resources according to an embodiment of the present disclosure. The method can be applied to a network device (e.g., a base station). As shown in FIG2 , the method includes the following steps:

[0182] Step 200: Send downlink control information DCI to the terminal. The DCI is used to indicate the SL PRS resources allocated to the terminal by the network device.

[0183] In some embodiments, the DCI includes one or more of the following:

[0184] A first DCI, where the first DCI is used to indicate SL PRS resources in the shared resource pool;

[0185] The second DCI is used to indicate the SL PRS resources in the dedicated resource pool.

[0186] In some embodiments, the first DCI includes a first information field, where the first information field is used to indicate whether there is an SL PRS resource in the time slot where at least one physical direct link shared channel PSSCH is transmitted.

[0187] In some embodiments, the first information field includes a configuration index field and / or a hybrid automatic repeat request HARQ process number field.

[0188] In some embodiments, 3 bits are used in the configuration index field to indicate whether there are SL PRS resources in the time slots where up to 3 PSSCH transmissions are located.

[0189] In some embodiments, 1 bit is used in the HARQ process number field to indicate activation of the configuration grant, and the other 3 bits except 1 bit are used to indicate whether SL PRS resources exist in the time slots where up to 3 PSSCH transmissions are located.

[0190] In some embodiments, the cyclic redundancy check code CRC in the first DCI is scrambled by the direct link radio network temporary identifier SL-RNTI, the direct link configuration scheduling radio network temporary identifier SL-CS-RNTI, or the radio network temporary identifier SL-Pos-RNTI for direct link positioning.

[0191] In some embodiments, the first information field includes an SL PRS indication field, and the CRC in the first DCI is scrambled by SL-Pos-RNTI.

[0192] In some embodiments, when the CRC in the first DCI is scrambled by the SL-Pos-RNTI, the first DCI is used to indicate the SL PRS resources.

[0193] In some embodiments, the first DCI is associated with a third DCI, and the PSSCH resources indicated by the third DCI and the SL PRS resources indicated by the first DCI are located in the same time slot.

[0194] In some embodiments, the association relationship between the first DCI and the third DCI is predefined by the system or indicated by the network side.

[0195] In some embodiments, the second DCI includes a resource pool index field and / or a time interval field.

[0196] In some embodiments, the size of the resource pool index field in the second DCI is the same as the size of the resource pool index field in the first DCI; and / or,

[0197] The length of the second DCI is the same as that of the first DCI.

[0198] In some embodiments, the CRC in the second DCI is scrambled by a radio network temporary identifier SL-Pos-DP-RNTI for a direct link positioning dedicated resource pool.

[0199] The methods provided in the various embodiments of the present disclosure are based on the same application concept, so the implementation of each method can refer to each other, and the repeated parts will not be repeated.

[0200] The following describes the methods provided in the above embodiments of the present disclosure through examples of specific application scenarios.

[0201] Example 1:

[0202] For the shared resource pool, DCI format 3_0 is used to indicate both SL data transmission resource allocation and SL PRS resource allocation. Specifically, for DCI format 3_0 with CRC scrambled by SL-RNTI, the configuration index field in DCI format 3_0 is used to indicate whether the corresponding transmission contains SL PRS resources. This configuration index field contains 3 bits, each bit corresponding to whether each transmission contains SL PRS in up to 3 transmissions. The number of transmissions is determined by the time domain resource allocation field in the DCI. For example, if the time domain resource allocation field indicates 3 transmissions and the configuration index field indicates "010", it means that the first and third transmissions only contain data transmission (only PSSCH resources), and the second transmission contains both data transmission and SL PRS transmission; if the resource allocation field indicates 2 transmissions, only the first 2 bits in the configuration index field are effective. If the configuration index field indicates "101" at this time, it means that the first transmission contains both data transmission and SL PRS transmission, and the second transmission contains only data transmission. In this solution, it is required that the configuration index field always exists in the DCI format 3_0 after the CRC is scrambled by the SL-RNTI.

[0203] For DCI format 3_0 whose CRC is scrambled by SL-CS-RNTI, the HARQ process number field in DCI format 3_0 is used to indicate whether the corresponding transmission contains SL PRS resources. This HARQ process number field occupies 4 bits and uses values ​​other than "0000" and "1111" to indicate whether the corresponding transmission contains SL PRS resources (because "0000" indicates activation of configuration authorization and "1111" indicates deactivation of configuration authorization). One method is to use the first bit as 0 to indicate activation of configuration authorization, and each of the next three bits corresponds to whether each transmission contains SL PRS in up to three transmissions, as shown in Table 2.

[0204] Figure 3 is an example diagram of resource indication provided by an embodiment of the present disclosure. As shown in Figure 3, after a terminal receives this DCI format 3_0, it determines the time slot where the SL PSSCH resource is located based on the time domain resource allocation field and frequency domain resource allocation field in the DCI, and determines whether there is an SL PRS resource in the corresponding time slot based on the indication of the configuration index field. Furthermore, the terminal indicates the PSCCH resources and SL PRS resources allocated by the base station to other terminals through SCI format 1-A.

[0205] In this example, a special value is set in the existing DCI field to indicate SL PRS resource allocation, which neither increases the number of blind detections of the terminal nor increases the DCI overhead.

[0206] Example 2:

[0207] A new RNTI, defined as the SL-Pos-RNTI, is introduced. For a shared resource pool, if the base station configures this SL-Pos-RNTI through RRC, the DCI format 3_0, whose CRC is scrambled by this SL-Pos-RNTI, includes an SL PRS indication field. This SL PRS indication field may be a new field added to the current DCI format 3_0. The SL PRS indication field consists of three bits, each corresponding to whether each of up to three transmissions includes an SL PRS. The number of transmissions is determined by the time domain resource allocation field in the DCI. For example, if the time domain resource allocation field indicates three transmissions and the SL PRS indication field indicates "010," the first and third transmissions include only data transmission, while the second transmission includes both data transmission and SL PRS transmission. If the resource allocation field indicates two transmissions, only the first two bits of the SL PRS indication field are valid. If the SL PRS indication field indicates "101," the first transmission includes both data transmission and SL PRS transmission, while the second transmission includes only data transmission.

[0208] When a terminal receives this DCI format 3_0, it determines the time slot where the SL PSSCH resource is located based on the time domain resource allocation field and frequency domain resource allocation field in the DCI, and determines whether there is an SL PRS resource in the corresponding time slot based on the indication of the SL PRS indication field. Furthermore, the terminal indicates the PSCCH resources and SL PRS resources allocated by the base station to other terminals through SCI format 1-A.

[0209] If the base station configures this SL-Pos-RNTI through RRC, the SL PRS indication field in the DCI format 3_0 with the CRC scrambled by the SL-CS-RNTI is reserved (i.e., the bit is invalid). This DCI is used for activation or release of the SL configuration authorization in the same way as the existing one. If the base station configures this SL-Pos-RNTI through RRC, the SL PRS indication field in the DCI format 3_0 with the CRC scrambled by the SL-RNTI is reserved (i.e., the bit is invalid). This DCI is used for dynamic scheduling resource allocation for SL communication in the same way as the existing one.

[0210] In this example, the DCI format 3_0 with CRC scrambled by SL-Pos-RNTI is used to indicate both the PSSCH resource allocation for SL communication and the SL PRS resource allocation for SL positioning.

[0211] Example 3:

[0212] A new RNTI is introduced, which can be defined as SL-Pos-RNTI. For the shared resource pool, DCI format 3_0 with CRC scrambled by different RNTIs is used for different resource allocation. DCI format 3_0 with CRC scrambled by this SL-Pos-RNTI is used to indicate SL PRS resource allocation. Under this condition, the time domain resource allocation and frequency domain resource allocation in Table 1 correspond to the time domain and frequency domain positions of the SL PRS resources. When the terminal receives this DCI format 3_0, it determines the time slot where the SL PRS resources are located based on the time domain resource allocation domain and frequency domain resource allocation domain in the DCI. DCI format 3_0 with CRC scrambled by SL-RNTI is used to indicate SL PSSCH resource allocation. When the terminal receives this DCI format 3_0, it determines the time slot where the PSSCH resources are located based on the time domain resource allocation domain and frequency domain resource allocation domain in the DCI. Further, the terminal indicates the PSSCH resources and SL PRS resources allocated by the base station to other terminals through SCI format 1-A.

[0213] Optionally, the system predefines or indicates that there is an association between the two DCIs (DCI format 3_0 with CRC scrambled by SL-Pos-RNTI and DCI format 3_0 with CRC scrambled by SL-RNTI) to ensure that the terminal determines that the PSSCH resource and SL PRS resource are in the same time slot.

[0214] Similarly, DCI format 3_0, whose CRC is scrambled by the SL-CS-RNTI, is used to indicate SL PSSCH resource allocation. Upon receiving this DCI, the terminal, combined with the CRC indicated by DCI format 3_0, which is scrambled by the SL-Pos-RNTI, determines the time slots in which the SL PSSCH and SL PRS resources are located. Furthermore, the terminal uses SCI format 1-A to indicate the PSSCH and SL PRS resources allocated by the base station to other terminals.

[0215] Example 4:

[0216] The resource allocation can be indicated by combining the above multiple examples. For example, combining Example 1 with Example 3, by introducing SL-Pos-RNTI to scramble the DCI, and adopting the method of setting the special value in the DCI field in Example 1, the resource allocation of SL PRS is realized. For details, please refer to the above examples and will not be repeated here.

[0217] Example 5:

[0218] The dedicated resource pool does not include PSSCH resources. In this case, the base station does not need to indicate PSSCH resources, but only needs to indicate SL PRS resources. At this time, a new DCI can be used to indicate SL PRS resources, assuming it is defined as DCI format 3_2. This DCI contains at least a resource pool index field and a time interval field. Among them, the size of the resource pool index field is the same as that in DCI format 3_0, and the length of this DCI is the same as that of DCI format 3_0. If different, the length of this DCI is padded to the length of DCI format 3_0 by padding. This DCI also includes an indication of the time slot where the SL PRS resource is located, and may also include the symbol position of the SL PRS resource in the time slot, or include the SL PRS resource index, or include the comb value of the SL PRS resource.

[0219] When a terminal receives a DCI whose CRC is scrambled by the SL-RNTI, it determines the resource pool scheduled by the DCI by parsing the resource pool index field of the DCI. If the index indicates a dedicated resource pool, the terminal determines that the DCI is DCI format 3-2. The terminal further parses information such as the time slot where the SL PRS resource is located, the symbol position of the SL PRS resource within the time slot, or the SL PRS resource index. After determining the SL PRS resource, the terminal indicates the SL PRS resource allocated by the base station to other terminals through the SCI.

[0220] Example 6:

[0221] A new RNTI, defined as the SL-Pos-DP-RNTI, is introduced to scramble DCI for dedicated resource pools. Upon receiving a DCI whose CRC has been scrambled using the SL-Pos-DP-RNTI, the terminal determines that this DCI is for SL PRS resource allocation for the dedicated resource pool. This DCI may include a resource pool index field and a time interval field. When only one dedicated resource pool is configured, the resource pool index field is 0 bits.

[0222] In this DCI, the size of the resource pool index field is the same as in DCI format 3_0, and the length of this DCI is the same as DCI format 3_0. If different, the length of this DCI is padded to the length of DCI format 3_0. This DCI also includes an indication of the time slot in which the SL PRS resource is located, and may also include the symbol position of the SL PRS resource within the time slot, the SL PRS resource index, or the comb value of the SL PRS resource.

[0223] When a terminal receives a DCI whose CRC is scrambled by the SL-Pos-DP-RNTI, it determines that this DCI is for SL PRS resource allocation in the dedicated resource pool. The terminal further parses information such as the timeslot where the SL PRS resource is located, the symbol position of the SL PRS resource within the timeslot, or the SL PRS resource index. After determining the SL PRS resource, the terminal indicates the SL PRS resource allocated by the base station to other terminals through the SCI.

[0224] The methods and devices provided in the various embodiments of the present disclosure are based on the same application concept. Since the methods and devices solve problems based on similar principles, the implementation of the devices and methods can refer to each other, and the repeated parts will not be repeated.

[0225] FIG4 is a schematic structural diagram of a terminal provided by an embodiment of the present disclosure. As shown in FIG4 , the terminal includes a memory 420 , a transceiver 410 , and a processor 400 ; wherein the processor 400 and the memory 420 may also be physically arranged separately.

[0226] The memory 420 is used to store computer programs; the transceiver 410 is used to send and receive data under the control of the processor 400.

[0227] Specifically, the transceiver 410 is configured to receive and send data under the control of the processor 400 .

[0228] In FIG4 , the bus architecture may include any number of interconnected buses and bridges, specifically various circuits of one or more processors represented by processor 400 and memory represented by memory 420, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described in this disclosure. The bus interface provides an interface. The transceiver 410 may be a plurality of components, i.e., a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, such as a wireless channel, a wired channel, an optical cable, and other transmission media. For different user devices, the user interface 430 may also be an interface capable of connecting external or internal devices as required, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

[0229] The processor 400 is responsible for managing the bus architecture and general processing, and the memory 420 can store data used by the processor 400 when performing operations.

[0230] The processor 400 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or a complex programmable logic device (CPLD). The processor may also adopt a multi-core architecture.

[0231] The processor 400 calls the computer program stored in the memory 420 to execute any method provided by the embodiments of the present disclosure according to the obtained executable instructions, for example: receiving downlink control information DCI sent by the network device; determining the SL PRS resources allocated to the terminal by the network device based on the DCI.

[0232] In some embodiments, the DCI includes one or more of the following:

[0233] A first DCI, where the first DCI is used to indicate SL PRS resources in the shared resource pool;

[0234] The second DCI is used to indicate the SL PRS resources in the dedicated resource pool.

[0235] In some embodiments, the first DCI includes a first information field, where the first information field is used to indicate whether there is an SL PRS resource in a time slot where at least one physical direct link shared channel PSSCH transmission occurs.

[0236] In some embodiments, the first information field includes a configuration index field and / or a hybrid automatic repeat request HARQ process number field.

[0237] In some embodiments, 3 bits are used in the configuration index field to indicate whether there are SL PRS resources in the time slots where up to 3 PSSCH transmissions are located.

[0238] In some embodiments, 1 bit is used in the HARQ process number field to indicate activation of the configuration grant, and the other 3 bits except 1 bit are used to indicate whether SL PRS resources exist in the time slots where up to 3 PSSCH transmissions are located.

[0239] In some embodiments, the cyclic redundancy check code CRC in the first DCI is scrambled by the direct link radio network temporary identifier SL-RNTI, the direct link configuration scheduling radio network temporary identifier SL-CS-RNTI, or the radio network temporary identifier SL-Pos-RNTI for direct link positioning.

[0240] In some embodiments, the first information field includes an SL PRS indication field, and the CRC in the first DCI is scrambled by SL-Pos-RNTI.

[0241] In some embodiments, when the CRC in the first DCI is scrambled by the SL-Pos-RNTI, the first DCI is used to indicate the SL PRS resources.

[0242] In some embodiments, the first DCI is associated with a third DCI, and the PSSCH resources indicated by the third DCI and the SL PRS resources indicated by the first DCI are located in the same time slot.

[0243] In some embodiments, the association relationship between the first DCI and the third DCI is predefined by the system or indicated by the network side.

[0244] In some embodiments, the second DCI includes a resource pool index field and / or a time interval field.

[0245] In some embodiments, the size of the resource pool index field in the second DCI is the same as the size of the resource pool index field in the first DCI; and / or,

[0246] The length of the second DCI is the same as that of the first DCI.

[0247] In some embodiments, the CRC in the second DCI is scrambled by a radio network temporary identifier SL-Pos-DP-RNTI for a direct link positioning dedicated resource pool.

[0248] FIG5 is a schematic structural diagram of a network device provided in an embodiment of the present disclosure. As shown in FIG5 , the network device includes a memory 520 , a transceiver 510 , and a processor 500 ; wherein the processor 500 and the memory 520 may also be physically arranged separately.

[0249] The memory 520 is used to store computer programs; the transceiver 510 is used to send and receive data under the control of the processor 500.

[0250] Specifically, the transceiver 510 is configured to receive and send data under the control of the processor 500 .

[0251] In FIG5 , the bus architecture may include any number of interconnected buses and bridges, specifically linking together various circuits of one or more processors represented by processor 500 and memory represented by memory 520. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described in this disclosure. The bus interface provides an interface. The transceiver 510 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices over a transmission medium, such as a wireless channel, a wired channel, an optical cable, or the like.

[0252] The processor 500 is responsible for managing the bus architecture and general processing, and the memory 520 can store data used by the processor 500 when performing operations.

[0253] The processor 500 may be a CPU, an ASIC, an FPGA, or a CPLD, and the processor may also adopt a multi-core architecture.

[0254] The processor 500 calls the computer program stored in the memory 520 to execute any method provided by the embodiments of the present disclosure according to the obtained executable instructions, for example: sending downlink control information DCI to the terminal, where DCI is used to indicate the SL PRS resources allocated to the terminal by the network device.

[0255] In some embodiments, the DCI includes one or more of the following:

[0256] A first DCI, where the first DCI is used to indicate SL PRS resources in the shared resource pool;

[0257] The second DCI is used to indicate the SL PRS resources in the dedicated resource pool.

[0258] In some embodiments, the first DCI includes a first information field, where the first information field is used to indicate whether there is an SL PRS resource in the time slot where at least one physical direct link shared channel PSSCH is transmitted.

[0259] In some embodiments, the first information field includes a configuration index field and / or a hybrid automatic repeat request HARQ process number field.

[0260] In some embodiments, 3 bits are used in the configuration index field to indicate whether there are SL PRS resources in the time slots where up to 3 PSSCH transmissions are located.

[0261] In some embodiments, 1 bit is used in the HARQ process number field to indicate activation of the configuration grant, and the other 3 bits except 1 bit are used to indicate whether SL PRS resources exist in the time slots where up to 3 PSSCH transmissions are located.

[0262] In some embodiments, the cyclic redundancy check code CRC in the first DCI is scrambled by the direct link radio network temporary identifier SL-RNTI, the direct link configuration scheduling radio network temporary identifier SL-CS-RNTI, or the radio network temporary identifier SL-Pos-RNTI for direct link positioning.

[0263] In some embodiments, the first information field includes an SL PRS indication field, and the CRC in the first DCI is scrambled by SL-Pos-RNTI.

[0264] In some embodiments, when the CRC in the first DCI is scrambled by the SL-Pos-RNTI, the first DCI is used to indicate the SL PRS resources.

[0265] In some embodiments, the first DCI is associated with a third DCI, and the PSSCH resources indicated by the third DCI and the SL PRS resources indicated by the first DCI are located in the same time slot.

[0266] In some embodiments, the association relationship between the first DCI and the third DCI is predefined by the system or indicated by the network side.

[0267] In some embodiments, the second DCI includes a resource pool index field and / or a time interval field.

[0268] In some embodiments, the size of the resource pool index field in the second DCI is the same as the size of the resource pool index field in the first DCI; and / or,

[0269] The length of the second DCI is the same as that of the first DCI.

[0270] In some embodiments, the CRC in the second DCI is scrambled by a radio network temporary identifier SL-Pos-DP-RNTI for a direct link positioning dedicated resource pool.

[0271] It should be noted here that the above-mentioned terminals and network devices provided in the embodiments of the present disclosure can implement all the method steps implemented in the above-mentioned method embodiments and can achieve the same technical effects. The parts and beneficial effects of this embodiment that are the same as those in the method embodiments will not be described in detail here.

[0272] FIG6 is a schematic diagram of the structure of a device for determining SL PRS resources provided by an embodiment of the present disclosure. As shown in FIG6 , the device includes:

[0273] The receiving unit 600 is configured to receive downlink control information DCI sent by a network device;

[0274] The determining unit 610 is configured to determine the SL PRS resources allocated by the network device to the terminal based on the DCI.

[0275] In some embodiments, the DCI includes one or more of the following:

[0276] A first DCI, where the first DCI is used to indicate SL PRS resources in the shared resource pool;

[0277] The second DCI is used to indicate the SL PRS resources in the dedicated resource pool.

[0278] In some embodiments, the first DCI includes a first information field, where the first information field is used to indicate whether there is an SL PRS resource in a time slot where at least one physical direct link shared channel PSSCH transmission occurs.

[0279] In some embodiments, the first information field includes a configuration index field and / or a hybrid automatic repeat request HARQ process number field.

[0280] In some embodiments, 3 bits are used in the configuration index field to indicate whether there are SL PRS resources in the time slots where up to 3 PSSCH transmissions are located.

[0281] In some embodiments, 1 bit is used in the HARQ process number field to indicate activation of the configuration grant, and the other 3 bits except 1 bit are used to indicate whether SL PRS resources exist in the time slots where up to 3 PSSCH transmissions are located.

[0282] In some embodiments, the cyclic redundancy check code CRC in the first DCI is scrambled by the direct link radio network temporary identifier SL-RNTI, the direct link configuration scheduling radio network temporary identifier SL-CS-RNTI, or the radio network temporary identifier SL-Pos-RNTI for direct link positioning.

[0283] In some embodiments, the first information field includes an SL PRS indication field, and the CRC in the first DCI is scrambled by SL-Pos-RNTI.

[0284] In some embodiments, when the CRC in the first DCI is scrambled by the SL-Pos-RNTI, the first DCI is used to indicate the SL PRS resources.

[0285] In some embodiments, the first DCI is associated with a third DCI, and the PSSCH resources indicated by the third DCI and the SL PRS resources indicated by the first DCI are located in the same time slot.

[0286] In some embodiments, the association relationship between the first DCI and the third DCI is predefined by the system or indicated by the network side.

[0287] In some embodiments, the second DCI includes a resource pool index field and / or a time interval field.

[0288] In some embodiments, the size of the resource pool index field in the second DCI is the same as the size of the resource pool index field in the first DCI; and / or,

[0289] The length of the second DCI is the same as that of the first DCI.

[0290] In some embodiments, the CRC in the second DCI is scrambled by a radio network temporary identifier SL-Pos-DP-RNTI for a direct link positioning dedicated resource pool.

[0291] FIG7 is a schematic diagram of the structure of an apparatus for indicating SL PRS resources provided by an embodiment of the present disclosure. As shown in FIG7 , the apparatus includes:

[0292] The sending unit 700 is configured to send downlink control information DCI to the terminal, where the DCI is used to indicate SL PRS resources allocated by the network device to the terminal.

[0293] In some embodiments, the DCI includes one or more of the following:

[0294] A first DCI, where the first DCI is used to indicate SL PRS resources in the shared resource pool;

[0295] The second DCI is used to indicate the SL PRS resources in the dedicated resource pool.

[0296] In some embodiments, the first DCI includes a first information field, where the first information field is used to indicate whether there is an SL PRS resource in the time slot where at least one physical direct link shared channel PSSCH is transmitted.

[0297] In some embodiments, the first information field includes a configuration index field and / or a hybrid automatic repeat request HARQ process number field.

[0298] In some embodiments, 3 bits are used in the configuration index field to indicate whether there are SL PRS resources in the time slots where up to 3 PSSCH transmissions are located.

[0299] In some embodiments, 1 bit is used in the HARQ process number field to indicate activation of the configuration grant, and the other 3 bits except 1 bit are used to indicate whether SL PRS resources exist in the time slots where up to 3 PSSCH transmissions are located.

[0300] In some embodiments, the cyclic redundancy check code CRC in the first DCI is scrambled by the direct link radio network temporary identifier SL-RNTI, the direct link configuration scheduling radio network temporary identifier SL-CS-RNTI, or the radio network temporary identifier SL-Pos-RNTI for direct link positioning.

[0301] In some embodiments, the first information field includes an SL PRS indication field, and the CRC in the first DCI is scrambled by SL-Pos-RNTI.

[0302] In some embodiments, when the CRC in the first DCI is scrambled by the SL-Pos-RNTI, the first DCI is used to indicate the SL PRS resources.

[0303] In some embodiments, the first DCI is associated with a third DCI, and the PSSCH resources indicated by the third DCI and the SL PRS resources indicated by the first DCI are located in the same time slot.

[0304] In some embodiments, the association relationship between the first DCI and the third DCI is predefined by the system or indicated by the network side.

[0305] In some embodiments, the second DCI includes a resource pool index field and / or a time interval field.

[0306] In some embodiments, the size of the resource pool index field in the second DCI is the same as the size of the resource pool index field in the first DCI; and / or,

[0307] The length of the second DCI is the same as that of the first DCI.

[0308] In some embodiments, the CRC in the second DCI is scrambled by a radio network temporary identifier SL-Pos-DP-RNTI for a direct link positioning dedicated resource pool.

[0309] It should be noted that the division of units in the embodiments of the present disclosure is schematic and is merely a logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional units in the various embodiments of the present disclosure may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0310] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present disclosure is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the method described in each embodiment of the present disclosure. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0311] It should be noted here that the above-mentioned device provided in the embodiment of the present disclosure can implement all the method steps implemented in the above-mentioned method embodiment and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those in the method embodiment will not be described in detail here.

[0312] On the other hand, an embodiment of the present disclosure further provides a non-transitory readable storage medium, wherein the non-transitory readable storage medium stores a computer program, and the computer program is used to enable a processor to execute the methods provided in the above embodiments.

[0313] It should be noted here that the non-transitory readable storage medium provided in the embodiment of the present disclosure can implement all the method steps implemented in the above-mentioned method embodiment and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those in the method embodiment will not be described in detail here.

[0314] The non-transitory readable storage medium can be any available medium or data storage device that can be accessed by a computer, including but not limited to magnetic storage (such as floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO), etc.), optical storage (such as CDs, DVDs, BDs, HVDs, etc.), and semiconductor storage (such as ROMs, EPROMs, EEPROMs, non-volatile memories (NAND FLASH), solid-state drives (SSDs)), etc.

[0315] The technical solution provided by the embodiment of the present disclosure can be applicable to a variety of systems, especially 5G systems. For example, the applicable system can be a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (WCDMA) general packet radio service (GPRS) system, a long term evolution (LTE) system, a LTE frequency division duplex (FDD) system, a LTE time division duplex (TDD) system, an advanced long term evolution (LTE-A) system, a universal mobile telecommunication system (UMTS), a world-wide interoperability for microwave access (WiMAX) system, a 5G new air interface (NR) system, etc. These various systems include terminal equipment and network equipment. The system may also include a core network part, such as an evolved packet system (EPS), a 5G system (5GS), etc.

[0316] The terminal involved in the embodiments of the present disclosure may be a device that provides voice and / or data connectivity to a user, a handheld device with wireless connection function, or other processing devices connected to a wireless modem. In different systems, the name of the terminal may also be different. For example, in a 5G system, the terminal may be called User Equipment (UE). A wireless terminal device can communicate with one or more core networks (CN) via a radio access network (RAN). The wireless terminal device may be a mobile terminal device, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal device. For example, it may be a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device that exchanges voice and / or data with a radio access network. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), and other devices. The wireless terminal device may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, a remote terminal device, an access terminal device, a user terminal device, a user agent, or a user device, but is not limited in the embodiments of the present disclosure.

[0317] The network device involved in the embodiments of the present disclosure may be a base station, which may include multiple cells providing services to terminals. Depending on the specific application scenario, the base station may also be called an access point, or may be a device in an access network that communicates with a wireless terminal device through one or more sectors on an air interface, or may be called another name. The network device may be used to interchange received air frames with Internet Protocol (IP) packets, acting as a router between the wireless terminal device and the rest of the access network, wherein the rest of the access network may include an Internet Protocol (IP) communication network. The network device may also coordinate the attribute management of the air interface. For example, the network device involved in the embodiments of the present disclosure may be a base transceiver station (BTS) in the Global System for Mobile communications (GSM) or code division multiple access (CDMA), a network device (NodeB) in wide-band code division multiple access (WCDMA), an evolutionary Node B (eNB or e-NodeB) in the long term evolution (LTE) system, a 5G base station (gNB) in the 5G network architecture (next generation system), a home evolved Node B (HeNB), a relay node, a femto, a pico, etc., and is not limited in the embodiments of the present disclosure. In some network structures, the network device may include a centralized unit (CU) node and a distributed unit (DU) node, and the centralized unit and the distributed unit may also be geographically separated.

[0318] Network devices and terminals can each use one or more antennas for Multiple Input Multiple Output (MIMO) transmission. MIMO transmission can be single-user MIMO (SU-MIMO) or multi-user MIMO (MU-MIMO). Depending on the form and number of antenna combinations, MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO. It can also use diversity transmission, precoding transmission, or beamforming transmission.

[0319] Those skilled in the art will appreciate that the embodiments of the present disclosure may be provided as methods, systems, or computer program products. Therefore, the present disclosure may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Furthermore, the present disclosure may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage and optical storage, etc.) containing computer-usable program code.

[0320] The present disclosure is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present disclosure. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer-executable instructions. These computer-executable instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0321] These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the processor-readable memory produce a product including an instruction device that implements the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0322] These processor-executable instructions may also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, whereby the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0323] Obviously, those skilled in the art may make various changes and modifications to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure is intended to include these modifications and variations.

Claims

1. A method for determining a direct link positioning reference signal SL PRS resource, applied to a terminal, comprising: Receive downlink control information DCI sent by the network device; The SL PRS resources allocated by the network device to the terminal are determined based on the DCI.

2. The method for determining SL PRS resources according to claim 1, wherein: The DCI includes one or more of the following: A first DCI, where the first DCI is used to indicate a SL PRS resource in a shared resource pool; The second DCI is used to indicate the SL PRS resources in the dedicated resource pool.

3. The method for determining SL PRS resources according to claim 2, wherein: The first DCI includes a first information field, where the first information field is used to indicate whether there is an SL PRS resource in a time slot where at least one physical direct link shared channel PSSCH transmission is located.

4. The method for determining SL PRS resources according to claim 3, wherein: The first information field includes a configuration index field and / or a hybrid automatic repeat request HARQ process number field.

5. The method for determining SL PRS resources according to claim 4, wherein: The configuration index field uses 3 bits to indicate whether there are SL PRS resources in the time slots where at most 3 PSSCH transmissions are located.

6. The method for determining SL PRS resources according to claim 4, wherein: One bit is used in the HARQ process number field to indicate activation of configuration authorization, and the other three bits except the one bit are used to indicate whether there are SL PRS resources in the time slots where up to three PSSCH transmissions are located.

7. The method for determining SL PRS resources according to any one of claims 4 to 6, wherein: The cyclic redundancy check code CRC in the first DCI is scrambled by a direct link radio network temporary identifier SL-RNTI, a direct link configuration scheduling radio network temporary identifier SL-CS-RNTI, or a radio network temporary identifier SL-Pos-RNTI used for direct link positioning.

8. The method for determining SL PRS resources according to claim 3, wherein: The first information field includes an SL PRS indication field, and the CRC in the first DCI is scrambled by SL-Pos-RNTI.

9. The method for determining SL PRS resources according to claim 2, wherein: When the CRC in the first DCI is scrambled by SL-Pos-RNTI, the first DCI is used to indicate SL PRS resources.

10. The method for determining SL PRS resources according to claim 9, wherein: The first DCI is associated with a third DCI, and the PSSCH resources indicated by the third DCI and the SL PRS resources indicated by the first DCI are located in the same time slot.

11. The method for determining SL PRS resources according to claim 10, wherein: The association relationship between the first DCI and the third DCI is predefined by the system or indicated by the network side.

12. The method for determining SL PRS resources according to claim 2, wherein: The second DCI includes a resource pool index field and / or a time interval field.

13. The method for determining SL PRS resources according to claim 12, wherein: The size of the resource pool index field in the second DCI is the same as the size of the resource pool index field in the first DCI; and / or, The length of the second DCI is the same as the length of the first DCI.

14. The method for determining SL PRS resources according to claim 12 or 13, wherein: The CRC in the second DCI is scrambled by a radio network temporary identifier SL-Pos-DP-RNTI for a dedicated resource pool for direct link positioning.

15. A method for indicating a direct link positioning reference signal SL PRS resource, applied to a network device, comprising: Downlink control information DCI is sent to the terminal, where the DCI is used to indicate the SL PRS resources allocated by the network device to the terminal.

16. The method for indicating SL PRS resources according to claim 15, wherein: The DCI includes one or more of the following: A first DCI, where the first DCI is used to indicate a SL PRS resource in a shared resource pool; The second DCI is used to indicate the SL PRS resources in the dedicated resource pool.

17. The method for indicating SL PRS resources according to claim 16, wherein: The first DCI includes a first information field, where the first information field is used to indicate whether there is an SL PRS resource in the time slot where at least one physical direct link shared channel PSSCH transmission is located.

18. The method for indicating SL PRS resources according to claim 17, wherein: The first information field includes a configuration index field and / or a hybrid automatic repeat request HARQ process number field.

19. The method for indicating SL PRS resources according to claim 18, wherein: The configuration index field uses 3 bits to indicate whether there are SL PRS resources in the time slots where at most 3 PSSCH transmissions are located.

20. The method for indicating SL PRS resources according to claim 18, wherein: One bit is used in the HARQ process number field to indicate activation of configuration authorization, and the other three bits except the one bit are used to indicate whether there are SL PRS resources in the time slots where up to three PSSCH transmissions are located.

21. The method for indicating SL PRS resources according to any one of claims 18 to 20, wherein: The cyclic redundancy check code CRC in the first DCI is scrambled by a direct link radio network temporary identifier SL-RNTI, a direct link configuration scheduling radio network temporary identifier SL-CS-RNTI, or a radio network temporary identifier SL-Pos-RNTI used for direct link positioning.

22. The method for indicating SL PRS resources according to claim 17, wherein: The first information field includes an SL PRS indication field, and the CRC in the first DCI is scrambled by SL-Pos-RNTI.

23. The method for indicating SL PRS resources according to claim 16, wherein: When the CRC in the first DCI is scrambled by SL-Pos-RNTI, the first DCI is used to indicate SL PRS resources.

24. The method for indicating SL PRS resources according to claim 23, wherein: The first DCI is associated with a third DCI, and the PSSCH resources indicated by the third DCI and the SL PRS resources indicated by the first DCI are located in the same time slot.

25. The method for indicating SL PRS resources according to claim 24, wherein: The association relationship between the first DCI and the third DCI is predefined by the system or indicated by the network side.

26. The method for indicating SL PRS resources according to claim 16, wherein: The second DCI includes a resource pool index field and / or a time interval field.

27. The method for indicating SL PRS resources according to claim 26, wherein: The size of the resource pool index field in the second DCI is the same as the size of the resource pool index field in the first DCI; and / or, The length of the second DCI is the same as the length of the first DCI.

28. The method for indicating SL PRS resources according to claim 26 or 27, wherein: The CRC in the second DCI is scrambled by a radio network temporary identifier SL-Pos-DP-RNTI for a dedicated resource pool for direct link positioning.

29. A terminal comprising a memory, a transceiver, and a processor; Memory for storing computer programs; a transceiver, for transmitting and receiving data under the control of the processor; A processor is configured to read the computer program in the memory and perform the following operations: Receive downlink control information DCI sent by the network device; Determine, based on the DCI, a direct link positioning reference signal SL PRS resource allocated by the network device to the terminal.

30. The terminal according to claim 29, wherein: The DCI includes one or more of the following: A first DCI, where the first DCI is used to indicate a SL PRS resource in a shared resource pool; The second DCI is used to indicate the SL PRS resources in the dedicated resource pool.

31. The terminal according to claim 30, wherein: The first DCI includes a first information field, where the first information field is used to indicate whether there is an SL PRS resource in a time slot where at least one physical direct link shared channel PSSCH transmission is located.

32. The terminal according to claim 31, wherein: The first information field includes a configuration index field and / or a hybrid automatic repeat request HARQ process number field.

33. The terminal according to claim 32, wherein: The configuration index field uses 3 bits to indicate whether there are SL PRS resources in the time slots where at most 3 PSSCH transmissions are located.

34. The terminal according to claim 32, wherein: One bit is used in the HARQ process number field to indicate activation of configuration authorization, and the other three bits except the one bit are used to indicate whether there are SL PRS resources in the time slots where up to three PSSCH transmissions are located.

35. The terminal according to any one of claims 32 to 34, wherein: The cyclic redundancy check code CRC in the first DCI is scrambled by a direct link radio network temporary identifier SL-RNTI, a direct link configuration scheduling radio network temporary identifier SL-CS-RNTI, or a radio network temporary identifier SL-Pos-RNTI used for direct link positioning.

36. The terminal according to claim 31, wherein: The first information field includes an SL PRS indication field, and the CRC in the first DCI is scrambled by SL-Pos-RNTI.

37. The terminal according to claim 30, wherein: When the CRC in the first DCI is scrambled by SL-Pos-RNTI, the first DCI is used to indicate SL PRS resources.

38. The terminal according to claim 37, wherein: The first DCI is associated with a third DCI, and the PSSCH resources indicated by the third DCI and the SL PRS resources indicated by the first DCI are located in the same time slot.

39. The terminal according to claim 38, wherein: The association relationship between the first DCI and the third DCI is predefined by the system or indicated by the network side.

40. The terminal according to claim 30, wherein: The second DCI includes a resource pool index field and / or a time interval field.

41. The terminal according to claim 40, wherein: The size of the resource pool index field in the second DCI is the same as the size of the resource pool index field in the first DCI; and / or, The length of the second DCI is the same as the length of the first DCI.

42. The terminal according to claim 40 or 41, wherein: The CRC in the second DCI is scrambled by a radio network temporary identifier SL-Pos-DP-RNTI for a dedicated resource pool for direct link positioning.

43. A network device comprising a memory, a transceiver, and a processor; a memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; A processor is configured to read the computer program in the memory and perform the following operations: Downlink control information DCI is sent to the terminal, where the DCI is used to indicate a direct link positioning reference signal SL PRS resource allocated by the network device to the terminal.

44. The network device according to claim 43, wherein: The DCI includes one or more of the following: A first DCI, where the first DCI is used to indicate a SL PRS resource in a shared resource pool; The second DCI is used to indicate the SL PRS resources in the dedicated resource pool.

45. The network device according to claim 44, wherein: The first DCI includes a first information field, where the first information field is used to indicate whether there is an SL PRS resource in a time slot where at least one physical direct link shared channel PSSCH transmission is located.

46. ​​The network device according to claim 45, wherein: The first information field includes a configuration index field and / or a hybrid automatic repeat request HARQ process number field.

47. The network device according to claim 46, wherein: The configuration index field uses 3 bits to indicate whether there are SL PRS resources in the time slots where at most 3 PSSCH transmissions are located.

48. The network device according to claim 46, wherein: One bit is used in the HARQ process number field to indicate activation of configuration authorization, and the other three bits except the one bit are used to indicate whether there are SL PRS resources in the time slots where up to three PSSCH transmissions are located.

49. The network device according to any one of claims 46 to 48, wherein: The cyclic redundancy check code CRC in the first DCI is scrambled by a direct link radio network temporary identifier SL-RNTI, a direct link configuration scheduling radio network temporary identifier SL-CS-RNTI, or a radio network temporary identifier SL-Pos-RNTI used for direct link positioning.

50. The network device according to claim 45, wherein: The first information field includes an SL PRS indication field, and the CRC in the first DCI is scrambled by SL-Pos-RNTI.

51. The network device according to claim 44, wherein: When the CRC in the first DCI is scrambled by SL-Pos-RNTI, the first DCI is used to indicate SL PRS resources.

52. The network device according to claim 51, wherein: The first DCI is associated with a third DCI, and the PSSCH resources indicated by the third DCI and the SL PRS resources indicated by the first DCI are located in the same time slot.

53. The network device according to claim 52, wherein: The association relationship between the first DCI and the third DCI is predefined by the system or indicated by the network side.

54. The network device according to claim 44, wherein: The second DCI includes a resource pool index field and / or a time interval field.

55. The network device according to claim 54, wherein: The size of the resource pool index field in the second DCI is the same as the size of the resource pool index field in the first DCI; and / or, The length of the second DCI is the same as the length of the first DCI.

56. The network device according to claim 54 or 55, wherein: The CRC in the second DCI is scrambled by a radio network temporary identifier SL-Pos-DP-RNTI for a dedicated resource pool for direct link positioning.

57. A device for determining a direct link positioning reference signal SL PRS resource, comprising: A receiving unit, configured to receive downlink control information DCI sent by a network device; A determination unit is used to determine the SL PRS resources allocated by the network device to the terminal based on the DCI.

58. The apparatus for determining SL PRS resources according to claim 57, wherein: The DCI includes one or more of the following: A first DCI, where the first DCI is used to indicate a SL PRS resource in a shared resource pool; The second DCI is used to indicate the SL PRS resources in the dedicated resource pool.

59. The apparatus for determining SL PRS resources according to claim 58, wherein: The first DCI includes a first information field, where the first information field is used to indicate whether there is an SL PRS resource in a time slot where at least one physical direct link shared channel PSSCH transmission is located.

60. The device for determining SL PRS resources according to claim 59, wherein: The first information field includes a configuration index field and / or a hybrid automatic repeat request HARQ process number field.

61. The device for determining SL PRS resources according to claim 60, wherein: The configuration index field uses 3 bits to indicate whether there are SL PRS resources in the time slots where at most 3 PSSCH transmissions are located.

62. The device for determining SL PRS resources according to claim 60, wherein: One bit is used in the HARQ process number field to indicate activation of configuration authorization, and the other three bits except the one bit are used to indicate whether there are SL PRS resources in the time slots where up to three PSSCH transmissions are located.

63. The device for determining SL PRS resources according to any one of claims 60 to 62, wherein: The cyclic redundancy check code CRC in the first DCI is scrambled by a direct link radio network temporary identifier SL-RNTI, a direct link configuration scheduling radio network temporary identifier SL-CS-RNTI, or a radio network temporary identifier SL-Pos-RNTI used for direct link positioning.

64. The apparatus for determining SL PRS resources according to claim 59, wherein: The first information field includes an SL PRS indication field, and the CRC in the first DCI is scrambled by SL-Pos-RNTI.

65. The apparatus for determining SL PRS resources according to claim 58, wherein: When the CRC in the first DCI is scrambled by SL-Pos-RNTI, the first DCI is used to indicate SL PRS resources.

66. The device for determining SL PRS resources according to claim 65, wherein: The first DCI is associated with a third DCI, and the PSSCH resources indicated by the third DCI and the SL PRS resources indicated by the first DCI are located in the same time slot.

67. The apparatus for determining SL PRS resources according to claim 66, wherein: The association relationship between the first DCI and the third DCI is predefined by the system or indicated by the network side.

68. The apparatus for determining SL PRS resources according to claim 58, wherein: The second DCI includes a resource pool index field and / or a time interval field.

69. The apparatus for determining SL PRS resources according to claim 68, wherein: The size of the resource pool index field in the second DCI is the same as the size of the resource pool index field in the first DCI; and / or, The length of the second DCI is the same as the length of the first DCI.

70. The device for determining SL PRS resources according to claim 68 or 69, wherein: The CRC in the second DCI is scrambled by a radio network temporary identifier SL-Pos-DP-RNTI for a dedicated resource pool for direct link positioning.

71. A device for indicating a direct link positioning reference signal SL PRS resource, comprising: The sending unit is used to send downlink control information DCI to the terminal, where the DCI is used to indicate the SL PRS resources allocated by the network device to the terminal.

72. The SL PRS resource indicating device according to claim 71, wherein: The DCI includes one or more of the following: A first DCI, where the first DCI is used to indicate a SL PRS resource in a shared resource pool; The second DCI is used to indicate the SL PRS resources in the dedicated resource pool.

73. The SL PRS resource indicating device according to claim 72, wherein: The first DCI includes a first information field, where the first information field is used to indicate whether there is an SL PRS resource in the time slot where at least one physical direct link shared channel PSSCH transmission is located.

74. The SL PRS resource indicating device according to claim 73, wherein: The first information field includes a configuration index field and / or a hybrid automatic repeat request HARQ process number field.

75. The SL PRS resource indicating device according to claim 74, wherein: The configuration index field uses 3 bits to indicate whether there are SL PRS resources in the time slots where at most 3 PSSCH transmissions are located.

76. The SL PRS resource indicating device according to claim 74, wherein: One bit is used in the HARQ process number field to indicate activation of configuration authorization, and the other three bits except the one bit are used to indicate whether there are SL PRS resources in the time slots where up to three PSSCH transmissions are located.

77. The SL PRS resource indicating device according to any one of claims 74 to 76, wherein: The cyclic redundancy check code CRC in the first DCI is scrambled by a direct link radio network temporary identifier SL-RNTI, a direct link configuration scheduling radio network temporary identifier SL-CS-RNTI, or a radio network temporary identifier SL-Pos-RNTI used for direct link positioning.

78. The SL PRS resource indicating device according to claim 73, wherein: The first information field includes an SL PRS indication field, and the CRC in the first DCI is scrambled by SL-Pos-RNTI.

79. The SL PRS resource indicating device according to claim 72, wherein: When the CRC in the first DCI is scrambled by SL-Pos-RNTI, the first DCI is used to indicate SL PRS resources.

80. The SL PRS resource indicating device according to claim 79, wherein: The first DCI is associated with a third DCI, and the PSSCH resources indicated by the third DCI and the SL PRS resources indicated by the first DCI are located in the same time slot.

81. The SL PRS resource indicating device according to claim 80, wherein: The association relationship between the first DCI and the third DCI is predefined by the system or indicated by the network side.

82. The SL PRS resource indicating device according to claim 72, wherein: The second DCI includes a resource pool index field and / or a time interval field.

83. The SL PRS resource indicating device according to claim 82, wherein: The size of the resource pool index field in the second DCI is the same as the size of the resource pool index field in the first DCI; and / or, The length of the second DCI is the same as the length of the first DCI.

84. The SL PRS resource indicating device according to claim 82 or 83, wherein: The CRC in the second DCI is scrambled by a radio network temporary identifier SL-Pos-DP-RNTI for a dedicated resource pool for direct link positioning.

85. A non-transitory readable storage medium storing a computer program, wherein the computer program is used to cause a processor to execute the method according to any one of claims 1 to 14.

86. A non-transitory readable storage medium storing a computer program, wherein the computer program is used to cause a processor to execute the method according to any one of claims 15 to 28.

Images