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

Abstract

The invention provides an SL PRS resource determination method, an SL PRS resource indication method, an SL PRS resource determination device and a storage medium. The SL PRS resource determination method comprises the following steps: a terminal receives downlink control information (DCI) sent by network equipment; and determining the SL PRS resource allocated to the terminal by the network device based on the DCI.

Description

Technical Field

[0001] The present application relates to the field of wireless communication technology, and in particular to a method for determining, indicating, device and storage medium for SL PRS resources. Background Art

[0002] In order to support positioning in the sidelink (SL) system, it is necessary to introduce a reference signal for positioning, which is defined as the sidelink positioning reference signal (SL PRS). After the introduction of SL PRS, for the sidelink system in the scenario within the 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 be used, but there is currently no clear technical solution for this. Summary of the invention

[0003] The present application provides a method for determining, a method for indicating, a device and a storage medium for SL PRS resources, so as to solve the problem of how to indicate SL PRS resource allocation.

[0004] In a first aspect, the present application provides a method for determining a direct link positioning reference signal SL PRS resource, which is applied to a terminal, including:

[0005] Receive downlink control information DCI sent by the network device;

[0006] The SL PRS resources allocated by the network device to the terminal are determined based on the DCI.

[0007] In some embodiments, the DCI includes one or more of the following:

[0008] A first DCI, where the first DCI is used to indicate a SL PRS resource in a shared resource pool;

[0009] The second DCI is used to indicate the SL PRS resources in the dedicated resource pool. In some embodiments, the first DCI includes a first information field, and the first information field is used to indicate whether there are SL PRS resources in the time slot where at least one physical direct link shared channel PSSCH transmission is located.

[0010] In some embodiments, the first information field includes a configuration index field and / or a hybrid automatic repeat request HARQ process number field.

[0011] In some embodiments, three bits are used in the configuration index field to indicate whether there are SL PRS resources in the time slots where at most three PSSCH transmissions are located.

[0012] In some embodiments, 1 bit is used in the HARQ process number field to indicate activation configuration authorization, and 3 bits other than the 1 bit are used to indicate whether SLPRS resources exist in the time slots where up to 3 PSSCH transmissions are located.

[0013] In some embodiments, 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 for direct link positioning.

[0014] In some embodiments, the first information field includes a SL PRS indication field, and the CRC in the first DCI is scrambled by SL-Pos-RNTI.

[0015] 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.

[0016] 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.

[0017] 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.

[0018] In some embodiments, the second DCI includes a resource pool index field and / or a time interval field.

[0019] 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,

[0020] The length of the second DCI is the same as the length of the first DCI.

[0021] 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.

[0022] In a second aspect, the present application also provides a method for indicating a direct link positioning reference signal SL PRS resource, which is applied to a network device, including:

[0023] 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.

[0024] In some embodiments, the DCI includes one or more of the following:

[0025] A first DCI, where the first DCI is used to indicate a SL PRS resource in a shared resource pool;

[0026] The second DCI is used to indicate the SL PRS resources in the dedicated resource pool.

[0027] In some embodiments, the first DCI includes a first information field, and the first information field is used to indicate whether there is a SL PRS resource in the time slot where at least one physical direct link shared channel PSSCH transmission is located.

[0028] In some embodiments, the first information field includes a configuration index field and / or a hybrid automatic repeat request HARQ process number field.

[0029] In some embodiments, three bits are used in the configuration index field to indicate whether there are SL PRS resources in the time slots where at most three PSSCH transmissions are located.

[0030] In some embodiments, 1 bit is used in the HARQ process number field to indicate activation configuration authorization, and 3 bits other than the 1 bit are used to indicate whether SLPRS resources exist in the time slots where up to 3 PSSCH transmissions are located.

[0031] In some embodiments, 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 for direct link positioning.

[0032] In some embodiments, the first information field includes a SL PRS indication field, and the CRC in the first DCI is scrambled by SL-Pos-RNTI.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] In some embodiments, the second DCI includes a resource pool index field and / or a time interval field.

[0037] 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,

[0038] The length of the second DCI is the same as the length of the first DCI.

[0039] 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.

[0040] In a third aspect, the present application further provides a terminal, including a memory, a transceiver, and a processor;

[0041] 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:

[0042] Receive downlink control information DCI sent by the network device;

[0043] The SL PRS resources allocated by the network device to the terminal are determined based on the DCI.

[0044] In some embodiments, the DCI includes one or more of the following:

[0045] A first DCI, where the first DCI is used to indicate a SL PRS resource in a shared resource pool;

[0046] The second DCI is used to indicate the SL PRS resources in the dedicated resource pool.

[0047] In some embodiments, the first DCI includes a first information field, and the first information field is used to indicate whether there is a SL PRS resource in the time slot where at least one physical direct link shared channel PSSCH transmission is located.

[0048] In some embodiments, the first information field includes a configuration index field and / or a hybrid automatic repeat request HARQ process number field.

[0049] In some embodiments, three bits are used in the configuration index field to indicate whether there are SL PRS resources in the time slots where at most three PSSCH transmissions are located.

[0050] In some embodiments, 1 bit is used in the HARQ process number field to indicate activation configuration authorization, and 3 bits other than the 1 bit are used to indicate whether SLPRS resources exist in the time slots where up to 3 PSSCH transmissions are located.

[0051] In some embodiments, 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 for direct link positioning.

[0052] In some embodiments, the first information field includes a SL PRS indication field, and the CRC in the first DCI is scrambled by SL-Pos-RNTI.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] In some embodiments, the second DCI includes a resource pool index field and / or a time interval field.

[0057] 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,

[0058] The length of the second DCI is the same as the length of the first DCI.

[0059] 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.

[0060] In a fourth aspect, the present application further provides a network device, including a memory, a transceiver, and a processor;

[0061] 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:

[0062] 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.

[0063] In some embodiments, the DCI includes one or more of the following:

[0064] A first DCI, where the first DCI is used to indicate a SL PRS resource in a shared resource pool;

[0065] The second DCI is used to indicate the SL PRS resources in the dedicated resource pool.

[0066] In some embodiments, the first DCI includes a first information field, and the first information field is used to indicate whether there is a SL PRS resource in the time slot where at least one physical direct link shared channel PSSCH transmission is located.

[0067] In some embodiments, the first information field includes a configuration index field and / or a hybrid automatic repeat request HARQ process number field.

[0068] In some embodiments, three bits are used in the configuration index field to indicate whether there are SL PRS resources in the time slots where at most three PSSCH transmissions are located.

[0069] In some embodiments, 1 bit is used in the HARQ process number field to indicate activation configuration authorization, and 3 bits other than the 1 bit are used to indicate whether SLPRS resources exist in the time slots where up to 3 PSSCH transmissions are located.

[0070] In some embodiments, 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 for direct link positioning.

[0071] In some embodiments, the first information field includes a SL PRS indication field, and the CRC in the first DCI is scrambled by SL-Pos-RNTI.

[0072] 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.

[0073] 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.

[0074] 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.

[0075] In some embodiments, the second DCI includes a resource pool index field and / or a time interval field.

[0076] 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,

[0077] The length of the second DCI is the same as the length of the first DCI.

[0078] 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.

[0079] In a fifth aspect, the present application also provides a device for determining a direct link positioning reference signal SL PRS resource, including:

[0080] A receiving unit, configured to receive downlink control information DCI sent by a network device;

[0081] A determination unit is used to determine the SL PRS resources allocated by the network device to the terminal based on the DCI.

[0082] In some embodiments, the DCI includes one or more of the following:

[0083] A first DCI, where the first DCI is used to indicate a SL PRS resource in a shared resource pool;

[0084] The second DCI is used to indicate the SL PRS resources in the dedicated resource pool.

[0085] In some embodiments, the first DCI includes a first information field, and the first information field is used to indicate whether there is a SL PRS resource in the time slot where at least one physical direct link shared channel PSSCH transmission is located.

[0086] In some embodiments, the first information field includes a configuration index field and / or a hybrid automatic repeat request HARQ process number field.

[0087] In some embodiments, three bits are used in the configuration index field to indicate whether there are SL PRS resources in the time slots where at most three PSSCH transmissions are located.

[0088] In some embodiments, 1 bit is used in the HARQ process number field to indicate activation configuration authorization, and 3 bits other than the 1 bit are used to indicate whether SLPRS resources exist in the time slots where up to 3 PSSCH transmissions are located.

[0089] In some embodiments, 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 for direct link positioning.

[0090] In some embodiments, the first information field includes a SL PRS indication field, and the CRC in the first DCI is scrambled by SL-Pos-RNTI.

[0091] 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.

[0092] 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.

[0093] 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.

[0094] In some embodiments, the second DCI includes a resource pool index field and / or a time interval field.

[0095] 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,

[0096] The length of the second DCI is the same as the length of the first DCI.

[0097] 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.

[0098] In a sixth aspect, the present application further provides an indication device for a direct link positioning reference signal SL PRS resource, including:

[0099] 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.

[0100] In some embodiments, the DCI includes one or more of the following:

[0101] A first DCI, where the first DCI is used to indicate a SL PRS resource in a shared resource pool;

[0102] The second DCI is used to indicate the SL PRS resources in the dedicated resource pool.

[0103] In some embodiments, the first DCI includes a first information field, and the first information field is used to indicate whether there is a SL PRS resource in the time slot where at least one physical direct link shared channel PSSCH transmission is located.

[0104] In some embodiments, the first information field includes a configuration index field and / or a hybrid automatic repeat request HARQ process number field.

[0105] In some embodiments, three bits are used in the configuration index field to indicate whether there are SL PRS resources in the time slots where at most three PSSCH transmissions are located.

[0106] In some embodiments, 1 bit is used in the HARQ process number field to indicate activation configuration authorization, and 3 bits other than the 1 bit are used to indicate whether SLPRS resources exist in the time slots where up to 3 PSSCH transmissions are located.

[0107] In some embodiments, 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 for direct link positioning.

[0108] In some embodiments, the first information field includes a SL PRS indication field, and the CRC in the first DCI is scrambled by SL-Pos-RNTI.

[0109] 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.

[0110] 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.

[0111] 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.

[0112] In some embodiments, the second DCI includes a resource pool index field and / or a time interval field.

[0113] 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,

[0114] The length of the second DCI is the same as the length of the first DCI.

[0115] 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.

[0116] In the seventh aspect, the present application also provides a non-transitory readable storage medium, which stores a computer program, and the computer program is used to enable a processor to execute the method for determining SL PRS resources as described in the first aspect, or to execute the method for indicating SL PRS resources as described in the second aspect.

[0117] In an eighth aspect, the present application 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 method for determining SL PRS resources as described in the first aspect, or to execute the method for indicating SL PRS resources as described in the second aspect.

[0118] In the ninth aspect, the present application 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.

[0119] In the tenth aspect, the present application 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.

[0120] The present application provides a method for determining, a method for indicating, an apparatus and a 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

[0121] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the following is a brief introduction to the drawings required for use in the embodiments or the related technical descriptions. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0122] Figure 1 A flowchart of a method for determining SL PRS resources provided in an embodiment of the present application;

[0123] Figure 2 A flowchart of a method for indicating SL PRS resources provided in an embodiment of the present application;

[0124] Figure 3 An example diagram of resource indication provided for an embodiment of the present application;

[0125] Figure 4 A schematic diagram of the structure of a terminal provided in an embodiment of the present application;

[0126] Figure 5 A schematic diagram of the structure of a network device provided in an embodiment of the present application;

[0127] Figure 6 A schematic diagram of the structure of a device for determining SL PRS resources provided in an embodiment of the present application;

[0128] Figure 7 A schematic diagram of the structure of the SL PRS resource indication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0129] In the embodiments of the present application, the term "and / or" describes the association relationship of the associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0130] In the embodiments of the present application, the term "plurality" refers to two or more than two, and other quantifiers are similar.

[0131] In the embodiments of the present application, the terms "first", "second", etc. are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first" and "second" are generally of the same type, and the number of objects is not limited. For example, the first object can be one or more.

[0132] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0133] At present, for the sidelink system in the network coverage scenario, the base station indicates the SL resources used for data transmission to the terminal through the downlink control information (Downlink Control Information, DCI) format 3_0 signaling, and the terminal uses this SL resource 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 (Physical Uplink Control Channel, PUCCH) resource indication field, physical direct link feedback channel (Physical Sidelink Feedback Channel, PSFCH) and PUCCH time slot interval field, hybrid automatic repeat request (HARQ) process number field, new data indication field, configuration index field, cumulative side authorization index field.

[0134] 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 the resource allocation of data from the resource allocation of SL PRS. If the transmission times of data and SL PRS are inconsistent, it is impossible to indicate.

[0135] Table 1: DCI format 3_0 format

[0136]

[0137] Figure 1 A flow chart of a method for determining SL PRS resources provided in an embodiment of the present application, which method can be applied to a terminal, such as Figure 1 As shown, the method comprises the following steps:

[0138] Step 100: Receive downlink control information DCI sent by a network device.

[0139] Step 101: Determine SL PRS resources allocated to a terminal by a network device based on DCI.

[0140] Specifically, the present application 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.

[0141] In some embodiments, the DCI may simultaneously indicate resource allocation of a physical sidelink shared channel (PSSCH) (or SL PSSCH) and resource allocation of a SL PRS.

[0142] In some embodiments, the DCI includes one or more of the following:

[0143] A first DCI, where the first DCI is used to indicate a SL PRS resource in a shared resource pool;

[0144] The second DCI is used to indicate the SL PRS resources in the dedicated resource pool.

[0145] Specifically, the DCI in the embodiment of the present application 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 application, the dedicated resource pool refers to a resource pool dedicated to SLPRS 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.

[0146] 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 a shared resource pool.

[0147] The second DCI may be a DCI different from the existing DCI format 3_0, and is used to indicate the SLPRS resources in the dedicated resource pool.

[0148] In some embodiments, the network device may indicate the SL PRS resources by using different Radio Network Temporary Identifiers (RNTI) 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 SLPRS resources based on the RNTI of the scrambled CRC, the bit value of a specific information field in the DCI, the SL PRS indication field, the dedicated DCI, or a combination of multiple methods.

[0149] The method for determining SL PRS resources provided in the embodiment of the present application is that the network device can indicate the allocated SL PRS resources to the terminal through DCI, so that the terminal can determine the allocation status of the SL PRS resources accordingly, and then complete the direct link positioning.

[0150] In some embodiments, the first DCI includes a first information field, and the first information field is used to indicate whether there is a SL PRS resource in the time slot where at least one PSSCH transmission is located.

[0151] 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 SLPRS 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.

[0152] In some embodiments, the number of PSSCH transmissions may be determined by the time domain resource allocation field in the DCI.

[0153] There are SL PRS resources in the time slot where a PSSCH transmission is located, which can also be understood as one transmission (through link transmission) includes data transmission and SL PRS transmission. There are no SL PRS resources in the time slot where a PSSCH transmission is located, which can also be understood as one transmission (through link transmission) includes only data transmission and does not include SL PRS transmission.

[0154] In some embodiments, assuming that the number of PSSCH transmissions is n, the n bits in the first information field may indicate whether there is a SL PRS resource in the time slot where each PSSCH transmission is located. The number of bits in the first information field may be greater than or equal to n.

[0155] In some embodiments, the first information field includes a configuration index field and / or a HARQ process number field.

[0156] 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.

[0157] 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.

[0158] In some embodiments, one bit is used in the HARQ process number field to indicate activation of the configuration authorization, and three bits other than 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.

[0159] For example, the HARQ process number field occupies 4 bits, and the first bit can be used to indicate the activation configuration authorization, and each of the last 3 bits corresponds to whether each transmission contains SL PRS in up to 3 transmissions, as shown in Table 2.

[0160] Table 2 HARQ process number field indication example

[0161]

[0162]

[0163] It should be noted that the above are examples, and the use of other bit values ​​to represent corresponding transmission is not excluded.

[0164] 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). Among them, SL-Pos-RNTI can be any RNTI used for direct link positioning, and its specific name and form are not limited in this application.

[0165] 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.

[0166] 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), and the multiple bits are used to indicate whether SL PRS transmission is included in at least one transmission.

[0167] 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 resources based on the SL PRS indication field in the first DCI.

[0168] In some embodiments, when the CRC in the first DCI is scrambled by SL-Pos-RNTI, the first DCI is used to indicate the SL PRS resources.

[0169] 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 with CRC scrambled by SL-Pos-RNTI is only used to indicate the resource allocation of SL PRS, not for indicating 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 with CRC scrambled by SL-RNTI or SL-CS-RNTI can be used to indicate the resource allocation of data transmission.

[0170] In some embodiments, the first DCI is associated with the 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.

[0171] For example, in the case where different resource allocations are indicated by scrambling the CRC of the DCI with 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 may indicate that the resources indicated by the two DCIs are located in the same time slot.

[0172] 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.

[0173] In some embodiments, the second DCI includes a resource pool index field and / or a time interval field.

[0174] 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.

[0175] The second DCI at least includes 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 used for indicating are different.

[0176] In some embodiments, the second DCI may also 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 where the SL PRS resource is located, or the symbol position of the SL PRS resource in the time slot, or the SL PRS resource index, or the comb value of the SL PRS resource, etc.

[0177] 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 can be padded to the same length as the first DCI by padding.

[0178] 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 dedicated resource pool. Among them, SL-Pos-DP-RNTI can be any RNTI used for direct link positioning and for SL PRS resource indication in a dedicated resource pool, and its specific name and form are not limited in this application. When the terminal receives the DCI whose CRC is scrambled by SL-Pos-DP-RNTI, it can directly determine that the DCI indicates the SL PRS resources in the dedicated resource pool.

[0179] The DCI design for shared resource pool and / or dedicated resource pool proposed in this application. By introducing new RNTI, setting special bit values, introducing new SL PRS indication domain and other methods, it not only ensures compatibility with existing terminals, but also realizes resource allocation that can indicate SL communication and SL positioning for the shared resource pool at the same time; for the dedicated resource pool, it can further indicate the time domain location information of SL PRS resources. It can be used for a variety of SL positioning technologies.

[0180] Figure 2 A flow chart of a method for indicating SL PRS resources provided in an embodiment of the present application, which method can be applied to a network device (eg, a base station), such as Figure 2As shown, the method comprises the following steps:

[0181] Step 200: Send downlink control information DCI to the terminal, where the DCI is used to indicate the SLPRS resources allocated by the network device to the terminal.

[0182] In some embodiments, the DCI includes one or more of the following:

[0183] A first DCI, where the first DCI is used to indicate a SL PRS resource in a shared resource pool;

[0184] The second DCI is used to indicate the SL PRS resources in the dedicated resource pool.

[0185] In some embodiments, the first DCI includes a first information field, and the first information field is used to indicate whether there is a SL PRS resource in the time slot where at least one physical direct link shared channel PSSCH transmission is located.

[0186] In some embodiments, the first information field includes a configuration index field and / or a hybrid automatic repeat request HARQ process number field.

[0187] 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.

[0188] 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 there are SL PRS resources in the time slots where up to 3 PSSCH transmissions are located.

[0189] 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 used for direct link positioning.

[0190] 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.

[0191] In some embodiments, when the CRC in the first DCI is scrambled by SL-Pos-RNTI, the first DCI is used to indicate the SL PRS resources.

[0192] In some embodiments, the first DCI is associated with the 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.

[0193] 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.

[0194] In some embodiments, the second DCI includes a resource pool index field and / or a time interval field.

[0195] 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,

[0196] The length of the second DCI is the same as the length of the first DCI.

[0197] 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.

[0198] The methods provided in the embodiments of the present application 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.

[0199] The following describes the methods provided in the above embodiments of the present application by using examples of specific application scenarios.

[0200] Example 1:

[0201] For the shared resource pool, DCI format 3_0 is used to indicate both SL data transmission resource allocation and SLPRS 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 of which corresponds 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, the time domain resource allocation field indicates 3 transmissions, and the configuration index field indicates "010", indicating 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 in which the CRC is scrambled by SL-RNTI.

[0202] 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.

[0203] Figure 3 The resource indication example diagram provided in the embodiment of the present application is as follows: Figure 3 As shown, when the terminal receives this DCIformat 3_0, it determines the time slot where the SL PSSCH resource is located according to the time domain resource allocation field and the frequency domain resource allocation field in the DCI, and determines whether there is a SL PRS resource in the corresponding time slot according to the indication of the configuration index field. Further, the terminal indicates the PSCCH resources and SL PRS resources allocated by the base station to other terminals through SCIformat 1-A.

[0204] In this example, the SL PRS resource allocation is indicated by setting a special value in the existing DCI domain, which neither increases the number of blind detections of the terminal nor increases the DCI overhead.

[0205] Example 2:

[0206] A new RNTI is introduced, which can be defined as SL-Pos-RNTI. 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 contains an SL PRS indication field. This SL PRS indication field can be a newly added field in the current DCI format 3_0. The SL PRS indication field contains 3 bits, each of which corresponds 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, the time domain resource allocation field indicates 3 transmissions, and the SL PRS indication field indicates "010", indicating that the first and third transmissions only contain data transmission, 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 SL PRS indication field are effective. If the SL PRS indication 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.

[0207] When the terminal receives this DCI format 3_0, it determines the time slot where the SL PSSCH resource is located according to the time domain resource allocation field and frequency domain resource allocation field in the DCI, and determines whether there is a SL PRS resource in the corresponding time slot according to the indication of the SL PRS indication field. Further, the terminal indicates the PSCCH resources and SL PRS resources allocated by the base station to other terminals through SCI format 1-A.

[0208] If the base station configures this SL-Pos-RNTI through RRC, the SL PRS indication field in the DCI format 3_0 scrambled by SL-CS-RNTI is reserved (that is, the bit is invalid), and this DCI is used for activation or release of 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 scrambled by SL-RNTI is reserved (that is, the bit is invalid), and this DCI is used for dynamic scheduling resource allocation for SL communication in the same way as the existing one.

[0209] In this example, the DCI format 3_0 with CRC scrambled by SL-Pos-RNTI is used to indicate both the resource allocation of PSSCH for SL communication and the resource allocation of SL PRS for SL positioning.

[0210] Example 3:

[0211] 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 allocations. 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 according to 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 according to 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.

[0212] 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 located in the same time slot.

[0213] Similarly, DCI format 3_0 with CRC encrypted by SL-CS-RNTI is used to indicate SL PSSCH resource allocation. After receiving this DCI, the terminal determines the time slot where the SL PSSCH resources and SL PRS resources are located in combination with the indication of DCI format 3_0 with CRC encrypted by SL-Pos-RNTI. Further, the terminal indicates the PSSCH resources and SL PRS resources allocated by the base station to other terminals through SCI format 1-A.

[0214] Example 4:

[0215] The resource allocation can be indicated by combining the above multiple examples. For example, Example 1 is combined with Example 3, and the DCI is scrambled by introducing SL-Pos-RNTI, and the resource allocation of SL PRS is realized by setting the special value in the DCI domain in Example 1. Please refer to the above examples for details, which will not be repeated here.

[0216] Example 5:

[0217] 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 filled 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.

[0218] When the terminal receives the DCI whose CRC is encrypted by SL-RNTI, it determines the resource pool scheduled by this DCI by parsing the resource pool index field of this DCI. If this index indicates a dedicated resource pool, the terminal determines that this DCI is DCI format3-2. 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 in the time slot, or the SL PRS resource index. After the terminal determines the SL PRS resource, it indicates the SL PRS resource allocated by the base station to other terminals through the SCI.

[0219] Example 6:

[0220] A new RNTI is introduced, which can be defined as SL-Pos-DP-RNTI, and is used to scramble the DCI of the dedicated resource pool. When the terminal receives the DCI whose CRC is scrambled by SL-Pos-DP-RNTI, the terminal determines that this DCI is used for SL PRS resource allocation of 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 bit.

[0221] In this DCI, 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.

[0222] When the terminal receives the DCI whose CRC is encrypted by SL-Pos-DP-RNTI, the terminal determines that this DCI is used for SL PRS resource allocation in the dedicated resource pool. The terminal further parses the time slot where the SL PRS resource is located, the symbol position of the SL PRS resource in the time slot, or the SL PRS resource index and other information. After the terminal determines the SL PRS resource, it indicates the SL PRS resource allocated by the base station to other terminals through SCI.

[0223] The methods and devices provided in the various embodiments of the present application 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.

[0224] Figure 4 A schematic diagram of the structure of a terminal provided in an embodiment of the present application, such as Figure 4As shown, the terminal includes a memory 420, a transceiver 410 and a processor 400; wherein the processor 400 and the memory 420 may also be arranged physically separately.

[0225] 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.

[0226] Specifically, the transceiver 410 is used to receive and send data under the control of the processor 400 .

[0227] Among them, Figure 4 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 400 and various circuits of memory represented by memory 420 are linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described in this application. The bus interface provides an interface. The transceiver 410 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, which transmission medium includes 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 externally and internally connecting required devices, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

[0228] 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.

[0229] 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.

[0230] The processor 400 calls the computer program stored in the memory 420 to execute any method provided in the embodiments of the present application 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.

[0231] In some embodiments, the DCI includes one or more of the following:

[0232] A first DCI, where the first DCI is used to indicate a SL PRS resource in a shared resource pool;

[0233] The second DCI is used to indicate the SL PRS resources in the dedicated resource pool.

[0234] In some embodiments, the first DCI includes a first information field, and the first information field is used to indicate whether there is a SL PRS resource in the time slot where at least one physical direct link shared channel PSSCH transmission is located.

[0235] In some embodiments, the first information field includes a configuration index field and / or a hybrid automatic repeat request HARQ process number field.

[0236] 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.

[0237] 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 there are SL PRS resources in the time slots where up to 3 PSSCH transmissions are located.

[0238] 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 used for direct link positioning.

[0239] 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.

[0240] In some embodiments, when the CRC in the first DCI is scrambled by SL-Pos-RNTI, the first DCI is used to indicate the SL PRS resources.

[0241] In some embodiments, the first DCI is associated with the 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.

[0242] 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.

[0243] In some embodiments, the second DCI includes a resource pool index field and / or a time interval field.

[0244] 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,

[0245] The length of the second DCI is the same as the length of the first DCI.

[0246] 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.

[0247] Figure 5 A schematic diagram of the structure of a network device provided in an embodiment of the present application, such as Figure 5 As shown, 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 arranged physically separately.

[0248] 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.

[0249] Specifically, the transceiver 510 is used to receive and send data under the control of the processor 500 .

[0250] Among them, Figure 5 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 500 and memory represented by memory 520. The bus architecture may also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described in this application. The bus interface provides an interface. The transceiver 510 may be a plurality of components, including a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, which may include a wireless channel, a wired channel, an optical cable, and other transmission media.

[0251] 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.

[0252] The processor 500 may be a CPU, an ASIC, an FPGA or a CPLD, and the processor may also adopt a multi-core architecture.

[0253] The processor 500 calls the computer program stored in the memory 520 to execute any method provided in the embodiments of the present application 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.

[0254] In some embodiments, the DCI includes one or more of the following:

[0255] A first DCI, where the first DCI is used to indicate a SL PRS resource in a shared resource pool;

[0256] The second DCI is used to indicate the SL PRS resources in the dedicated resource pool.

[0257] In some embodiments, the first DCI includes a first information field, and the first information field is used to indicate whether there is a SL PRS resource in the time slot where at least one physical direct link shared channel PSSCH transmission is located.

[0258] In some embodiments, the first information field includes a configuration index field and / or a hybrid automatic repeat request HARQ process number field.

[0259] 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.

[0260] 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 there are SL PRS resources in the time slots where up to 3 PSSCH transmissions are located.

[0261] 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 used for direct link positioning.

[0262] 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.

[0263] In some embodiments, when the CRC in the first DCI is scrambled by SL-Pos-RNTI, the first DCI is used to indicate the SL PRS resources.

[0264] In some embodiments, the first DCI is associated with the 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.

[0265] 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.

[0266] In some embodiments, the second DCI includes a resource pool index field and / or a time interval field.

[0267] 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,

[0268] The length of the second DCI is the same as the length of the first DCI.

[0269] 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.

[0270] It should be noted here that the above-mentioned terminal and network device provided in the embodiment of the present application 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 that are the same as the method embodiment in this embodiment will not be described in detail here.

[0271] Figure 6 A schematic diagram of the structure of the device for determining SL PRS resources provided in an embodiment of the present application is shown in FIG. Figure 6 As shown, the device comprises:

[0272] The receiving unit 600 is configured to receive downlink control information DCI sent by a network device;

[0273] The determining unit 610 is configured to determine the SL PRS resources allocated by the network device to the terminal based on the DCI.

[0274] In some embodiments, the DCI includes one or more of the following:

[0275] A first DCI, where the first DCI is used to indicate a SL PRS resource in a shared resource pool;

[0276] The second DCI is used to indicate the SL PRS resources in the dedicated resource pool.

[0277] In some embodiments, the first DCI includes a first information field, and the first information field is used to indicate whether there is a SL PRS resource in the time slot where at least one physical direct link shared channel PSSCH transmission is located.

[0278] In some embodiments, the first information field includes a configuration index field and / or a hybrid automatic repeat request HARQ process number field.

[0279] 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.

[0280] 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 there are SL PRS resources in the time slots where up to 3 PSSCH transmissions are located.

[0281] 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 used for direct link positioning.

[0282] 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.

[0283] In some embodiments, when the CRC in the first DCI is scrambled by SL-Pos-RNTI, the first DCI is used to indicate the SL PRS resources.

[0284] In some embodiments, the first DCI is associated with the 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.

[0285] 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.

[0286] In some embodiments, the second DCI includes a resource pool index field and / or a time interval field.

[0287] 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,

[0288] The length of the second DCI is the same as the length of the first DCI.

[0289] 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.

[0290] Figure 7 A schematic diagram of the structure of the SL PRS resource indication device provided in the embodiment of the present application, such as Figure 7 As shown, the device comprises:

[0291] The sending unit 700 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.

[0292] In some embodiments, the DCI includes one or more of the following:

[0293] A first DCI, where the first DCI is used to indicate a SL PRS resource in a shared resource pool;

[0294] The second DCI is used to indicate the SL PRS resources in the dedicated resource pool.

[0295] In some embodiments, the first DCI includes a first information field, and the first information field is used to indicate whether there is a SL PRS resource in the time slot where at least one physical direct link shared channel PSSCH transmission is located.

[0296] In some embodiments, the first information field includes a configuration index field and / or a hybrid automatic repeat request HARQ process number field.

[0297] 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.

[0298] 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 there are SL PRS resources in the time slots where up to 3 PSSCH transmissions are located.

[0299] 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 used for direct link positioning.

[0300] 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.

[0301] In some embodiments, when the CRC in the first DCI is scrambled by SL-Pos-RNTI, the first DCI is used to indicate the SL PRS resources.

[0302] In some embodiments, the first DCI is associated with the 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.

[0303] 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.

[0304] In some embodiments, the second DCI includes a resource pool index field and / or a time interval field.

[0305] 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,

[0306] The length of the second DCI is the same as the length of the first DCI.

[0307] 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.

[0308] It should be noted that the division of units in the embodiments of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation. In addition, each functional unit in each embodiment of the present application may be integrated into a processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0309] 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 application 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 to enable a computer device (which can be a personal computer, server, or network device, etc.) or a processor (processor) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), disk or optical disk and other media that can store program codes.

[0310] It should be noted here that the above-mentioned device provided in the embodiment of the present application 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.

[0311] On the other hand, an embodiment of the present application 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.

[0312] It should be noted here that the non-transitory readable storage medium provided in the embodiment of the present application 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.

[0313] 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 CD, DVD, BD, HVD, etc.), and semiconductor storage (such as ROM, EPROM, EEPROM, non-volatile memory (NANDFLASH), solid-state drive (SSD)), etc.

[0314] The technical solution provided in the embodiment of the present application 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.

[0315] The terminal involved in the embodiment of the present application may be a device that provides voice and / or data connectivity to a user, a handheld device with a 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 a 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 a "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 language and / or data with a wireless 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, and a user device, but is not limited in the embodiments of the present application.

[0316] The network device involved in the embodiment of the present application may be a base station, which may include multiple cells providing services for the terminal. Depending on the specific application scenario, the base station may also be called an access point, or may be a device in the access network that communicates with the wireless terminal device through one or more sectors on the air interface, or other names. The network device may be used to interchange received air frames with Internet Protocol (IP) packets, and serve 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 application may be a network device (Base Transceiver Station, BTS) in the Global System for Mobile communications (Global System for Mobile communications, GSM) or Code Division Multiple Access (Code Division Multiple Access, CDMA), or a network device (NodeB) in Wide-band Code Division Multiple Access (WCDMA), or an evolutionary network device (evolutional Node B, eNB or e-NodeB) in the long term evolution (long term evolution, LTE) system, a 5G base station (gNB) in the 5G network architecture (next generation system), or a home evolved Node B (Home evolved Node B, HeNB), a relay node, a home base station (femto), a pico base station (pico), etc., which is not limited in the embodiments of the present application. 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 arranged geographically separately.

[0317] 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, or it can be diversity transmission, precoded transmission or beamforming transmission, etc.

[0318] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) that contain computer-usable program code.

[0319] The present application 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 application. 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 generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0320] 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 an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0321] 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, thereby providing instructions for executing on the computer or other programmable device to implement the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0322] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A method for determining a direct link positioning reference signal SL PRS resource, characterized in that: Applied to terminals, including: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: The first information field includes an SLPRS 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: Applied to network equipment, including: Downlink control information DCI is sent to the terminal, where the DCI is used to indicate the SLPRS resources allocated by the network device to the terminal.

16. The method for indicating SL PRS resources according to claim 15, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: 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, characterized in that: Including memory, transceiver, processor; 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: 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. A network device, characterized in that: Including memory, transceiver, processor; 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: 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.

31. A device for determining a direct link positioning reference signal SL PRS resource, characterized in that: include: 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.

32. A device for indicating a direct link positioning reference signal SL PRS resource, characterized in that: include: 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.

33. A non-transitory readable storage medium, characterized in that: The non-transitory readable storage medium stores a computer program, and the computer program is used to enable a processor to execute the method according to any one of claims 1 to 14.

34. A non-transitory readable storage medium, characterized in that: The non-transitory readable storage medium stores a computer program, and the computer program is used to cause a processor to execute the method according to any one of claims 15 to 28.

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