Method and device for transmitting direct link positioning reference signal

Abstract

The embodiment of the invention provides a direct link positioning reference signal transmission method and device, and the method applied to a first terminal comprises the steps: transmitting a destination address to a second terminal, the destination address being used for the second terminal to receive a direct link positioning reference signal (SL-PRS); and sending the SL-PRS to the second terminal by using the destination address. According to the direct link positioning reference signal transmission method and device provided by the embodiment of the invention, the SL-PRS is received by the determined second terminal, and the deterministic transmission of the SL-PRS between SL positioning participants (the first terminal and the second terminal) in the SL positioning process is ensured, so that the realization of SL positioning is ensured.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a method and device for transmitting a direct link positioning reference signal. Background Art

[0002] In the sidelink (SL) technology, the source layer 2 identification (Source L2 ID), destination layer 2 identification (Destination L2 ID) and communication type (cast type) of SL discovery and communication are all provided by the proximity service (Prose) / vehicle-to-everything (V2X) layer of the user equipment (UE).

[0003] In SL positioning, the multicast sidelink-positioning reference signal (SL-PRS) transmission between the sending UE and the receiving UE also adopts unicast, multicast and broadcast methods. During the transmission of broadcast / multicast SL-PRS, the sending UE only uses the multicast or broadcast L2 ID provided by the Prose / V2X layer as the destination address. The sending UE does not consider whether there is a UE receiving it, and how many UEs receive it, so there is uncertainty in the receiving UE. However, SL positioning has certain SL-PRS reception and measurement requirements. The uncertainty of the receiving UE will lead to the inability to achieve positioning. Therefore, there is a problem that SL positioning cannot be achieved under the broadcast / multicast sending mechanism in the related technology. Summary of the invention

[0004] The embodiments of the present application provide a method and device for transmitting a direct link positioning reference signal, so as to solve the problem that SL positioning cannot be realized under the broadcast / multicast transmission mechanism in the related art.

[0005] In a first aspect, an embodiment of the present application provides a method for transmitting a direct link positioning reference signal, which is applied to a first terminal, including:

[0006] Sending a destination address to the second terminal, where the destination address is used by the second terminal to receive a direct link positioning reference signal SL-PRS;

[0007] Using the destination address, send the SL-PRS to the second terminal.

[0008] Optionally, before sending the destination address to the second terminal, the step further includes:

[0009] Receiving direct link positioning indication information sent by the server;

[0010] The destination address is generated according to the direct link positioning indication information.

[0011] Optionally, the through link location indication information includes at least one of the following:

[0012] Direct link positioning method;

[0013] Sending terminal indication information, where the sending terminal indication information is used to indicate that the first terminal is an SL-PRS sending terminal;

[0014] Second terminal list;

[0015] SL-PRS serial number;

[0016] SL-PRS resource set information;

[0017] SL-PRS sending period;

[0018] Number of SL-PRS transmissions;

[0019] SL-PRS communication type cast type.

[0020] Optionally, when the through link location indication information includes the second terminal list, the method further includes:

[0021] The second terminal is determined according to the second terminal list.

[0022] Optionally, the method further comprises at least one of the following:

[0023] Determine how the through link is located; and / or

[0024] Determine the SL-PRS communication type cast type.

[0025] Optionally, before sending the destination address to the second terminal, the step further includes:

[0026] generating the destination address based on an address collision avoidance mechanism; or

[0027] The destination address is selected from a set of available destination addresses.

[0028] Optionally, the destination address is a layer 1 identifier or a layer 2 identifier.

[0029] Optionally, sending the destination address to the second terminal includes at least one of the following:

[0030] Sending the destination address to the second terminal via a straight link positioning protocol SLPP message;

[0031] Sending the destination address to the second terminal via a direct communication signal PC5-S message;

[0032] Sending the destination address to the second terminal through a direct communication radio resource control PC5-RRC message;

[0033] Sending the destination address to the second terminal via a media access control layer MAC control unit CE of a direct link SL;

[0034] The destination address is sent to the second terminal through direct link control information SCI.

[0035] Optionally, the method further comprises:

[0036] Send a SL-PRS communication type cast type and / or SL-PRS configuration information to the second terminal, where the SL-PRS communication type cast type and / or the SL-PRS configuration information are used by the second terminal to receive the SL-PRS.

[0037] Optionally, the sending the SL-PRS communication type cast type and / or SL-PRS configuration information to the second terminal includes at least one of the following:

[0038] Sending the SL-PRS communication type cast type and / or the SL-PRS configuration information to the second terminal through a SLPP message;

[0039] Sending the SL-PRS communication type cast type and / or the SL-PRS configuration information to the second terminal through a PC5-S message;

[0040] Sending the SL-PRS communication type cast type and / or the SL-PRS configuration information to the second terminal through a PC5-RRC message;

[0041] Sending the SL-PRS communication type cast type and / or the SL-PRS configuration information to the second terminal through the SL MAC CE;

[0042] The SL-PRS communication type cast type and / or the SL-PRS configuration information are sent to the second terminal via SCI.

[0043] Optionally, the SL-PRS configuration information includes at least one of the following:

[0044] SL-PRS serial number;

[0045] SL-PRS resource set information;

[0046] SL-PRS scheduling type, where the SL-PRS scheduling type is used to indicate that the SL-PRS scheduling type is periodic scheduling, semi-persistent scheduling, or dynamic scheduling.

[0047] Optionally, the first terminal is a target positioning terminal, and the second terminal is an anchor terminal, a reference terminal or a fixed position terminal; or

[0048] The first terminal is an anchor terminal, a reference terminal or a fixed position terminal, and the second terminal is a target positioning terminal.

[0049] Optionally, the method further comprises:

[0050] The second terminal is determined based on direct link SL discovery and / or SLPP capability interaction.

[0051] In a second aspect, an embodiment of the present application further provides a method for transmitting a direct link positioning reference signal, which is applied to a second terminal and includes:

[0052] receiving a destination address sent by the first terminal;

[0053] The direct link positioning reference signal SL-PRS sent by the first terminal is received using the destination address.

[0054] Optionally, the destination address is a layer 1 identifier or a layer 2 identifier.

[0055] Optionally, the receiving a destination address sent by the first terminal includes at least one of the following:

[0056] Receiving the destination address sent by the first terminal through a straight link positioning protocol SLPP message;

[0057] Receiving the destination address sent by the first terminal through a direct communication signal PC5-S message;

[0058] Receiving the destination address sent by the first terminal through a direct communication radio resource control PC5-RRC message;

[0059] Receiving the destination address sent by the first terminal through the media access control layer MAC control unit CE of the direct link SL;

[0060] The destination address sent by the first terminal through direct link control information SCI is received.

[0061] Optionally, the first terminal is a target positioning terminal, and the second terminal is an anchor terminal, a reference terminal or a fixed position terminal; or

[0062] The first terminal is an anchor terminal, a reference terminal or a fixed position terminal, and the second terminal is a target positioning terminal.

[0063] Optionally, the method further comprises:

[0064] Receive the SL-PRS communication type cast type and / or SL-PRS configuration information sent by the first terminal, and the SL-PRS communication type cast type and / or the SL-PRS configuration information are used by the second terminal to receive the SL-PRS.

[0065] Optionally, the receiving the SL-PRS communication type cast type and / or SL-PRS configuration information sent by the first terminal includes at least one of the following:

[0066] Receiving the SL-PRS communication type cast type and / or the SL-PRS configuration information sent by the first terminal through an SLPP message;

[0067] Receiving the SL-PRS communication type cast type and / or the SL-PRS configuration information sent by the first terminal through a PC5-S message;

[0068] Receiving the SL-PRS communication type cast type and / or the SL-PRS configuration information sent by the first terminal through a PC5-RRC message;

[0069] Receiving the SL-PRS communication type cast type and / or the SL-PRS configuration information sent by the first terminal through the SL MAC CE;

[0070] Receive the SL-PRS communication type cast type and / or the SL-PRS configuration information sent by the first terminal through SCI.

[0071] Optionally, the SL-PRS configuration information includes at least one of the following:

[0072] SL-PRS serial number;

[0073] SL-PRS resource set information;

[0074] SL-PRS scheduling type, where the SL-PRS scheduling type is used to indicate that the SL-PRS scheduling type is periodic scheduling, semi-persistent scheduling, or dynamic scheduling.

[0075] Optionally, the method further comprises:

[0076] measuring the SL-PRS to obtain a measurement result;

[0077] Send the measurement result to the first terminal or the server.

[0078] In a third aspect, an embodiment of the present application further provides a method for transmitting a direct link positioning reference signal, which is applied to a server, including:

[0079] Sending direct link positioning indication information to the first terminal, where the direct link positioning indication information is used to generate a destination address, and the destination address is used to transmit a direct link positioning reference signal SL-PRS.

[0080] In a fourth aspect, an embodiment of the present application further provides a first terminal, including a memory, a transceiver, and a processor:

[0081] The memory is used to store a computer program; the transceiver is used to send and receive data under the control of the processor; the processor is used to read the computer program in the memory and perform the following operations:

[0082] Sending a destination address to the second terminal, where the destination address is used by the second terminal to receive a direct link positioning reference signal SL-PRS;

[0083] Using the destination address, send the SL-PRS to the second terminal.

[0084] Optionally, before sending the destination address to the second terminal, the step further includes:

[0085] Receiving direct link positioning indication information sent by the server;

[0086] The destination address is generated according to the direct link positioning indication information.

[0087] Optionally, the through link location indication information includes at least one of the following:

[0088] Direct link positioning method;

[0089] Sending terminal indication information, where the sending terminal indication information is used to indicate that the first terminal is a SL-PRS sending terminal;

[0090] Second terminal list;

[0091] SL-PRS serial number;

[0092] SL-PRS resource set information;

[0093] SL-PRS sending period;

[0094] Number of SL-PRS transmissions;

[0095] SL-PRS communication type cast type.

[0096] Optionally, when the through link location indication information includes the second terminal list, the operation further includes:

[0097] The second terminal is determined according to the second terminal list.

[0098] Optionally, the operation further includes at least one of the following:

[0099] Determine how the through link is located; and / or

[0100] Determine the SL-PRS communication type cast type.

[0101] Optionally, before sending the destination address to the second terminal, the step further includes:

[0102] generating the destination address based on an address collision avoidance mechanism; or

[0103] The destination address is selected from a set of available destination addresses.

[0104] Optionally, the destination address is a layer 1 identifier or a layer 2 identifier.

[0105] Optionally, sending the destination address to the second terminal includes at least one of the following:

[0106] Sending the destination address to the second terminal via a straight link positioning protocol SLPP message;

[0107] Sending the destination address to the second terminal via a direct communication signal PC5-S message;

[0108] Sending the destination address to the second terminal through a direct communication radio resource control PC5-RRC message;

[0109] Sending the destination address to the second terminal via a media access control layer MAC control unit CE of a direct link SL;

[0110] The destination address is sent to the second terminal through direct link control information SCI.

[0111] Optionally, the operation further includes:

[0112] Send a SL-PRS communication type cast type and / or SL-PRS configuration information to the second terminal, where the SL-PRS communication type cast type and / or the SL-PRS configuration information are used by the second terminal to receive the SL-PRS.

[0113] Optionally, the sending the SL-PRS communication type cast type and / or SL-PRS configuration information to the second terminal includes at least one of the following:

[0114] Sending the SL-PRS communication type cast type and / or the SL-PRS configuration information to the second terminal through a SLPP message;

[0115] Sending the SL-PRS communication type cast type and / or the SL-PRS configuration information to the second terminal through a PC5-S message;

[0116] Sending the SL-PRS communication type cast type and / or the SL-PRS configuration information to the second terminal through a PC5-RRC message;

[0117] Sending the SL-PRS communication type cast type and / or the SL-PRS configuration information to the second terminal through the SL MAC CE;

[0118] The SL-PRS communication type cast type and / or the SL-PRS configuration information are sent to the second terminal via SCI.

[0119] Optionally, the SL-PRS configuration information includes at least one of the following:

[0120] SL-PRS serial number;

[0121] SL-PRS resource set information;

[0122] SL-PRS scheduling type, where the SL-PRS scheduling type is used to indicate that the SL-PRS scheduling type is periodic scheduling, semi-persistent scheduling, or dynamic scheduling.

[0123] Optionally, the first terminal is a target positioning terminal, and the second terminal is an anchor terminal, a reference terminal or a fixed position terminal; or

[0124] The first terminal is an anchor terminal, a reference terminal or a fixed position terminal, and the second terminal is a target positioning terminal.

[0125] Optionally, the operation further includes:

[0126] The second terminal is determined based on direct link SL discovery and / or SLPP capability interaction.

[0127] In a fifth aspect, an embodiment of the present application further provides a second terminal, including a memory, a transceiver, and a processor:

[0128] The memory is used to store a computer program; the transceiver is used to send and receive data under the control of the processor; the processor is used to read the computer program in the memory and perform the following operations:

[0129] receiving a destination address sent by the first terminal;

[0130] The direct link positioning reference signal SL-PRS sent by the first terminal is received using the destination address.

[0131] Optionally, the destination address is a layer 1 identifier or a layer 2 identifier.

[0132] Optionally, the first terminal is a target positioning terminal, and the second terminal is an anchor terminal, a reference terminal or a fixed position terminal; or

[0133] The first terminal is an anchor terminal, a reference terminal or a fixed position terminal, and the second terminal is a target positioning terminal.

[0134] Optionally, the operation further includes:

[0135] Receive the SL-PRS communication type cast type and / or SL-PRS configuration information sent by the first terminal, and the SL-PRS communication type cast type and / or the SL-PRS configuration information are used by the second terminal to receive the SL-PRS.

[0136] Optionally, the SL-PRS configuration information includes at least one of the following:

[0137] SL-PRS serial number;

[0138] SL-PRS resource set information;

[0139] SL-PRS scheduling type, where the SL-PRS scheduling type is used to indicate that the SL-PRS scheduling type is periodic scheduling, semi-persistent scheduling, or dynamic scheduling.

[0140] Optionally, the operation further includes:

[0141] measuring the SL-PRS to obtain a measurement result;

[0142] Send the measurement result to the first terminal or the server.

[0143] In a sixth aspect, an embodiment of the present application further provides a server, including a memory, a transceiver, and a processor:

[0144] The memory is used to store a computer program; the transceiver is used to send and receive data under the control of the processor; the processor is used to read the computer program in the memory and perform the following operations:

[0145] Sending direct link positioning indication information to the first terminal, where the direct link positioning indication information is used to generate a destination address, and the destination address is used to transmit a direct link positioning reference signal SL-PRS.

[0146] In a seventh aspect, an embodiment of the present application further provides a transmission device of a direct link positioning reference signal, which is applied to a first terminal, including:

[0147] A destination address sending unit, configured to send a destination address to a second terminal, wherein the destination address is used for the second terminal to receive a direct link positioning reference signal SL-PRS;

[0148] A reference signal sending unit is used to send SL-PRS to the second terminal using the destination address.

[0149] Optionally, the device further includes an indication information receiving unit and a first destination address generating unit;

[0150] The indication information receiving unit is used to receive the direct link positioning indication information sent by the server;

[0151] The first destination address generating unit is configured to generate the destination address according to the direct link location indication information.

[0152] Optionally, the through link location indication information includes at least one of the following:

[0153] Direct link positioning method;

[0154] Sending terminal indication information, where the sending terminal indication information is used to indicate that the first terminal is a SL-PRS sending terminal;

[0155] Second terminal list;

[0156] SL-PRS serial number;

[0157] SL-PRS resource set information;

[0158] SL-PRS sending period;

[0159] Number of SL-PRS transmissions;

[0160] SL-PRS communication type cast type.

[0161] Optionally, the apparatus further includes a second terminal determining unit, and when the direct link positioning indication information includes the second terminal list, the second terminal determining unit is configured to determine the second terminal according to the second terminal list.

[0162] Optionally, the device further comprises at least one of the following:

[0163] A positioning mode determining unit, used to determine a direct link positioning mode; and / or

[0164] The communication type determination unit is used to determine the SL-PRS communication type cast type.

[0165] Optionally, the device further comprises a second destination address generating unit or a destination address selecting unit;

[0166] The second destination address generating unit is configured to generate the destination address based on an address collision avoidance mechanism; or

[0167] The destination address selection unit is used to select the destination address from a set of available destination addresses.

[0168] Optionally, the destination address is a layer 1 identifier or a layer 2 identifier.

[0169] Optionally, sending the destination address to the second terminal includes at least one of the following:

[0170] Sending the destination address to the second terminal via a straight link positioning protocol SLPP message;

[0171] Sending the destination address to the second terminal via a direct communication signal PC5-S message;

[0172] Sending the destination address to the second terminal through a direct communication radio resource control PC5-RRC message;

[0173] Sending the destination address to the second terminal via a media access control layer MAC control unit CE of a direct link SL;

[0174] The destination address is sent to the second terminal through direct link control information SCI.

[0175] Optionally, the device also includes a first sending unit, which is used to send a SL-PRS communication type cast type and / or SL-PRS configuration information to the second terminal, and the SL-PRS communication type cast type and / or the SL-PRS configuration information is used for the second terminal to receive SL-PRS.

[0176] Optionally, the sending the SL-PRS communication type cast type and / or SL-PRS configuration information to the second terminal includes at least one of the following:

[0177] Sending the SL-PRS communication type cast type and / or the SL-PRS configuration information to the second terminal through a SLPP message;

[0178] Sending the SL-PRS communication type cast type and / or the SL-PRS configuration information to the second terminal through a PC5-S message;

[0179] Sending the SL-PRS communication type cast type and / or the SL-PRS configuration information to the second terminal through a PC5-RRC message;

[0180] Sending the SL-PRS communication type cast type and / or the SL-PRS configuration information to the second terminal through the SL MAC CE;

[0181] The SL-PRS communication type cast type and / or the SL-PRS configuration information are sent to the second terminal via SCI.

[0182] Optionally, the SL-PRS configuration information includes at least one of the following:

[0183] SL-PRS serial number;

[0184] SL-PRS resource set information;

[0185] SL-PRS scheduling type, where the SL-PRS scheduling type is used to indicate that the SL-PRS scheduling type is periodic scheduling, semi-persistent scheduling, or dynamic scheduling.

[0186] Optionally, the first terminal is a target positioning terminal, and the second terminal is an anchor terminal, a reference terminal or a fixed position terminal; or

[0187] The first terminal is an anchor terminal, a reference terminal or a fixed position terminal, and the second terminal is a target positioning terminal.

[0188] Optionally, the second terminal determining unit is used to determine the second terminal based on direct link SL discovery and / or SLPP capability interaction.

[0189] In an eighth aspect, an embodiment of the present application further provides a transmission device of a direct link positioning reference signal, which is applied to a second terminal, including:

[0190] A destination address receiving unit, configured to receive a destination address sent by the first terminal;

[0191] The reference signal receiving unit is configured to receive a direct link positioning reference signal SL-PRS sent by the first terminal using the destination address.

[0192] Optionally, the destination address is a layer 1 identifier or a layer 2 identifier.

[0193] Optionally, the receiving a destination address sent by the first terminal includes at least one of the following:

[0194] Receiving the destination address sent by the first terminal through a straight link positioning protocol SLPP message;

[0195] Receiving the destination address sent by the first terminal through a direct communication signal PC5-S message;

[0196] Receiving the destination address sent by the first terminal through a direct communication radio resource control PC5-RRC message;

[0197] Receiving the destination address sent by the first terminal through the media access control layer MAC control unit CE of the direct link SL;

[0198] The destination address sent by the first terminal through direct link control information SCI is received.

[0199] Optionally, the first terminal is a target positioning terminal, and the second terminal is an anchor terminal, a reference terminal or a fixed position terminal; or

[0200] The first terminal is an anchor terminal, a reference terminal or a fixed position terminal, and the second terminal is a target positioning terminal.

[0201] Optionally, the device also includes a first receiving unit, which is used to receive the SL-PRS communication type cast type and / or SL-PRS configuration information sent by the first terminal, and the SL-PRS communication type casttype and / or the SL-PRS configuration information are used for the second terminal to receive the SL-PRS.

[0202] Optionally, the receiving the SL-PRS communication type cast type and / or SL-PRS configuration information sent by the first terminal includes at least one of the following:

[0203] Receiving the SL-PRS communication type cast type and / or the SL-PRS configuration information sent by the first terminal through an SLPP message;

[0204] Receiving the SL-PRS communication type cast type and / or the SL-PRS configuration information sent by the first terminal through a PC5-S message;

[0205] Receiving the SL-PRS communication type cast type and / or the SL-PRS configuration information sent by the first terminal through a PC5-RRC message;

[0206] Receiving the SL-PRS communication type cast type and / or the SL-PRS configuration information sent by the first terminal through the SL MAC CE;

[0207] Receive the SL-PRS communication type cast type and / or the SL-PRS configuration information sent by the first terminal through SCI.

[0208] Optionally, the SL-PRS configuration information includes at least one of the following:

[0209] SL-PRS serial number;

[0210] SL-PRS resource set information;

[0211] SL-PRS scheduling type, where the SL-PRS scheduling type is used to indicate that the SL-PRS scheduling type is periodic scheduling, semi-persistent scheduling, or dynamic scheduling.

[0212] Optionally, the device further includes a measurement result reporting unit, and the measurement result reporting unit is used to:

[0213] measuring the SL-PRS to obtain a measurement result;

[0214] Send the measurement result to the first terminal or the server.

[0215] In a ninth aspect, an embodiment of the present application further provides a transmission device for a direct link positioning reference signal, which is applied to a server, including:

[0216] The indication information sending unit is used to send direct link positioning indication information to the first terminal, where the direct link positioning indication information is used to generate a destination address, and the destination address is used to transmit a direct link positioning reference signal SL-PRS.

[0217] In the tenth aspect, an embodiment of 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 transmitting a direct link positioning reference signal as described in the first aspect, the second aspect or the third aspect above.

[0218] In the eleventh aspect, an embodiment of 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 method for transmitting a direct link positioning reference signal as described in the first aspect, the second aspect or the third aspect above.

[0219] In the twelfth aspect, an embodiment of the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and the computer program is used to enable a computer to execute the method for transmitting a direct link positioning reference signal as described in the first aspect, the second aspect or the third aspect above.

[0220] In a thirteenth aspect, an embodiment of the present application further 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 transmitting a direct link positioning reference signal as described in the first aspect, the second aspect or the third aspect above.

[0221] In a fourteenth aspect, an embodiment of the present application further 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 method for transmitting a direct link positioning reference signal as described in the first aspect, the second aspect or the third aspect above.

[0222] The embodiment of the present application provides a method and device for transmitting a direct link positioning reference signal, in which a destination address is sent from a first terminal to a second terminal, and the first terminal sends a SL-PRS to the second terminal through the destination address, and the SL-PRS is received by a determined second terminal, thereby ensuring the deterministic transmission of the SL-PRS between SL positioning participants (the first terminal and the second terminal) during the SL positioning process, thereby ensuring the implementation of SL positioning, and through the deterministic transmission of the SL-PRS between the SL positioning participants, the problem of resource waste caused by UEs that do not need SL-PRS also receiving the SL-PRS is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0223] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. 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.

[0224] Figure 1 It is a schematic diagram of the positioning architecture provided by this application;

[0225] Figure 2 It is a schematic diagram of direct link discovery or communication provided by this application;

[0226] Figure 3 It is one of the flow diagrams of the method for transmitting a direct link positioning reference signal provided in an embodiment of the present application;

[0227] Figure 4 This is a second flow chart of a method for transmitting a direct link positioning reference signal provided in an embodiment of the present application;

[0228] Figure 5 This is a flowchart of the third method for transmitting a direct link positioning reference signal provided in an embodiment of the present application;

[0229] Figure 6 This is a fourth flow chart of a method for transmitting a direct link positioning reference signal provided in an embodiment of the present application;

[0230] Figure 7 This is a fifth flow chart of a method for transmitting a direct link positioning reference signal provided in an embodiment of the present application;

[0231] Figure 8 This is a sixth flow chart of a method for transmitting a direct link positioning reference signal provided in an embodiment of the present application;

[0232] Fig. 9 It is one of the structural schematic diagrams of a transmission device of a direct link positioning reference signal provided in an embodiment of the present application;

[0233] Fig.10 This is a second structural diagram of a transmission device for a direct link positioning reference signal provided in an embodiment of the present application;

[0234] Fig.11 This is a third structural diagram of a transmission device for a direct link positioning reference signal provided in an embodiment of the present application;

[0235] Fig.12 A schematic diagram of the structure of a first terminal provided in an embodiment of the present application;

[0236] Fig.13 A schematic diagram of the structure of a second terminal provided in an embodiment of the present application;

[0237] Fig.14 It is a schematic diagram of the structure of the server provided in the embodiment of the present application. DETAILED DESCRIPTION

[0238] 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.

[0239] In the embodiments of the present application, the term "plurality" refers to two or more than two, and other quantifiers are similar.

[0240] 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.

[0241] The technical solution provided in the embodiment of the present application can be applicable to a variety of systems, especially 5G (5th Generation Mobile Communication Technology, fifth generation mobile communication technology) system. 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 radio (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.

[0242] The terminal device 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 names of terminal devices may also be different. For example, in a 5G system, the terminal device may be called a user equipment (UE) or simply a terminal. 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.

[0243] 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.

[0244] Network devices and terminal devices can each use one or more antennas for multi-input multi-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, precoding transmission or beamforming transmission, etc.

[0245] To facilitate understanding of the embodiments of the present application, the following describes terms or backgrounds related to the embodiments of the present application:

[0246] 1. Positioning Architecture

[0247] Figure 1 This is a schematic diagram of the positioning architecture provided by this application, such as Figure 1 The positioning architecture shown is applicable to the Next Generation Radio Access Network (NG-RAN):

[0248] The location management function (LMF) is responsible for selecting the positioning method and triggering the corresponding positioning measurement, and can calculate the final positioning result and accuracy;

[0249] NG-RAN: can send positioning reference signals or perform positioning measurements based on auxiliary information;

[0250] UE: can send a positioning reference signal, or perform positioning measurements based on auxiliary information; or calculate the final positioning result and accuracy based on the measurement results.

[0251] 2. Relative positioning method

[0252] The main positioning methods include received signal strength indicator (RSSI), time of arrival (TOA), time difference of arrival (TDOA), angle of arrival (AOA) and frequency difference of arrival (FDOA).

[0253] The positioning principle of arrival time TOA positioning is to determine the distance between nodes by measuring the signal transmission delay after determining the specific positioning source, that is, after determining the coordinates of the anchor node (also called anchor terminal) and the propagation speed of the signal.

[0254] 3. Direct communication

[0255] Figure 2 This is a schematic diagram of direct link discovery or communication provided by this application, such as Figure 2 As shown, the interface between the UE (such as UE1 or UE2) and the network side device is the Uu interface, and the link between the UEs (such as between UE1 and UE2) is a direct communication link. Direct communication means that adjacent terminals can transmit data in a short range through a direct communication link, also known as a straight link (Sidelink, SL). The wireless interface corresponding to the Sidelink link is called a direct communication interface, also known as a Sidelink interface or a PC5 interface.

[0256] In the direct link technology, the source layer 2 identification (Source Layer-2 IDentification, L2 ID), destination layer 2 identification (Destination Layer-2 IDentification, L2 ID) and communication type (casttype) of SL discovery and communication are all provided by the proximity service (Prose) / vehicle-to-everything (V2X) layer of the user equipment (UE).

[0257] For each SL unicast transmission, the UE generates its own L2 ID. When sending, the UE uses its own L2 ID as the source address, and when receiving, it receives unicast data with its own L2 ID as the destination address (Destination).

[0258] For each multicast, the group L2 ID is provided by the Prose / V2X layer. The sending UE uses the group L2 ID as the destination address, and the UEs belonging to this group receive the multicast data with the group L2 ID as the destination address.

[0259] For broadcast, the broadcast L2 ID of interest to the UE is provided by the Prose / V2X layer, the sending UE uses the broadcast L2 ID as the destination address, and the receiving UE receives the broadcast data with the broadcast L2 ID as the destination address.

[0260] For SL unicast, a pair of UEs in unicast communication establish a unicast connection through direct communication signal (PC5-Signaling, PC5-S) signaling interaction, and obtain the L2 ID of the other UE in the process. For SL broadcast and multicast, there is no interaction between UEs to establish a communication connection. The multicast group is directly associated with the service or authorization. For broadcast, the L2 ID is obtained through service type mapping.

[0261] During broadcast and multicast SL transmission, the sending UE simply uses the multicast or broadcast L2 ID provided by the Prose / V2X layer as the destination address to send the SL-PRS. The sending UE does not consider whether there are any UEs receiving the SL or how many UEs are receiving the SL. Therefore, there is uncertainty in the receiving UE.

[0262] For example, UE1 that sends SL-PRS is used as the target UE for positioning. UE1 sends SL-PRS, and UE2 and UE3 may receive SL-PRS, and UE4 and UE5 may receive SL-PRS. Since the sending UE only sends SL-PRS, which is received by the UE of interest, there is uncertainty in the receiving UE. However, SL positioning has certain SL-PRS reception and measurement requirements. For example, it is determined that UE3 and UE4 with known positions receive SL-PRS, and the measurement results are obtained by measuring SL-PRS by UE3 and UE4 with known positions, and then UE1 is determined by the measurement results. The uncertainty of the receiving UE (such as UE3 and UE4 need to receive SL-PRS, but UE3 and UE4 do not receive SL-PRS) will make it impossible to achieve positioning. Therefore, the broadcast / multicast transmission mechanism under the relevant technology has the problem that SL positioning cannot be achieved.

[0263] The sending UE only uses the multicast or broadcast L2 ID provided by the Prose / V2X layer as the destination address to send the SL-PRS. The UE that needs to receive the SL-PRS cannot receive the SL-PRS, which will cause the SL positioning to fail. For example, it is necessary to measure the SL-PRS by UE3 and UE4 with known locations to obtain the measurement results. However, since UE1 that sends the SL-PRS belongs to different multicast groups from UE3 and UE4, UE3 and UE4 cannot receive the SL-PRS sent by UE1 in different groups, which will cause the SL positioning to fail.

[0264] On the other hand, the sending UE uses the multicast or broadcast L2 ID provided by the Prose / V2X layer as the destination address. There is a lack of direct correlation between the destination address and the UEs participating in the positioning, which may cause a large number of UEs that do not need to receive to receive, resulting in unnecessary power consumption. For example, the sending UE uses the broadcast L2 ID1 to send SL-PRS. Since the SLPP broadcast service is mapped to the same destination address L2 ID1, UE2, UE3, UE4 and UE5 all receive the SL-PRS signal. In fact, only UE3 and UE4 with known locations need to measure the SL-PRS to obtain the measurement result. Therefore, there is unnecessary signal reception by UE2 and UE5, resulting in power consumption.

[0265] 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.

[0266] Figure 3 This is one of the flow charts of the method for transmitting a direct link positioning reference signal provided in an embodiment of the present application, such as Figure 3 As shown, an embodiment of the present application provides a method for transmitting a direct link positioning reference signal, which is applied to a first terminal and includes:

[0267] Step 110, sending a destination address to the second terminal, where the destination address is used for the second terminal to receive a direct link positioning reference signal SL-PRS;

[0268] Specifically, the first terminal is a sending terminal of SL-PRS, the second terminal is a receiving terminal of SL-PRS, the number of the second terminals is one or more, the first terminal and the second terminal are participants in SL positioning, and exemplarily, one of the first terminal and the second terminal is a target positioning terminal, and the other is an auxiliary terminal. The auxiliary terminal may be a terminal with a known absolute position, a terminal with a known relative position, etc., and the location information of the target positioning terminal may be determined through the auxiliary terminal.

[0269] Optionally, the first terminal is a target positioning terminal, and the second terminal is an anchor terminal (Anchor UE), a reference terminal (Reference UE) or a fixed position terminal (Located UE); or

[0270] The first terminal is an anchor terminal, a reference terminal or a fixed position terminal, and the second terminal is a target positioning terminal.

[0271] The target positioning terminal may also be referred to as the target terminal (target UE), which is the terminal that needs to obtain location information in SL positioning.

[0272] The destination address Destination may be a link layer identifier, such as a destination layer two identifier (Destination Layer-2 ID, Destination L2 ID). In the embodiment of the present application, Destination is used to identify the transmission of SL-PRS.

[0273] Exemplarily, the destination address Destination L2 ID is L2 ID1, and the first terminal UE1 sends L2 ID1 to the second terminals UE2, UE3 and UE4.

[0274] Optionally, the destination address is a layer 1 identifier or a layer 2 identifier.

[0275] Specifically, the destination address is a layer 2 identifier (Layer-2 ID, L2 ID), which can be called a destination layer 2 identifier (Destination Layer-2 ID, Destination L2 ID), where the L2 ID is a 24-bit identifier used for physical layer and MAC layer transmission and matching; or

[0276] The destination address is a layer 1 identifier (Layer-1 ID, L1 ID), which is a 16-bit identifier used for physical layer SCI transmission and reception matching. It should be understood that the L2 ID can be converted into the L1 ID during the transmission process.

[0277] Step 120: Send the SL-PRS to the second terminal using the destination address.

[0278] Specifically, the first terminal uses the destination address to send the SL-PRS to the second terminal. Exemplarily, the first terminal UE1 uses L2 ID1 as the destination address Destination L2 ID to send the SL-PRS to UE2, UE3 and UE4.

[0279] The method for transmitting a direct link positioning reference signal provided in an embodiment of the present application sends a destination address to a second terminal through a first terminal, and the first terminal sends a SL-PRS to the second terminal through the destination address. Since the first terminal sends the destination address to the second terminal (the terminal that needs to receive the SL-PRS in SL positioning), during the SL-PRS transmission process, the SL-PRS is received by a determined second terminal, thereby ensuring the deterministic transmission of the SL-PRS between the SL positioning participants during the SL positioning process, thereby ensuring the implementation of the SL positioning, and through the deterministic transmission of the SL-PRS between the SL positioning participants, the problem of resource waste caused by the UE that does not need to perform SL-PRS also receiving the SL-PRS is avoided.

[0280] Exemplarily, it is necessary to measure SL-PRS through UE3 and UE4 with known locations to obtain measurement results, UE1 sends a destination address to UE3 and UE4, and UE1 uses the destination address to send SL-PRS to UE3 and UE4, thereby avoiding the problem that UE3 and UE4 cannot receive SL-PRS due to possible different groups of UE1, UE3 and UE4, and avoiding the power consumption problem caused by unnecessary signal reception of UEs other than UE3 and UE4.

[0281] Optionally, sending the destination address to the second terminal includes at least one of the following:

[0282] Sending the destination address to the second terminal via a straight link positioning protocol SLPP message;

[0283] Sending the destination address to the second terminal via a direct communication signal PC5-S message;

[0284] Sending the destination address to the second terminal through a direct communication radio resource control PC5-RRC message;

[0285] Sending the destination address to the second terminal via a media access control layer MAC control unit CE of a direct link SL;

[0286] The destination address is sent to the second terminal through direct link control information SCI.

[0287] In a possible implementation, when there are multiple second terminals, the destination address is sent to different second terminals in different ways. For example, the destination address is sent to the second terminal UE2 through an SLPP message, and the destination address is sent to the second terminal UE3 through an SCI. For combinations of other methods, refer to the above examples and will not be repeated here.

[0288] In a possible implementation, the destination address may be sent to the same second terminal in different ways to ensure that the second terminal can receive the destination address. Exemplarily, the destination address is sent to the second terminal UE2 via an SLPP message and an SCI.

[0289] It should be understood that the above examples are provided to facilitate understanding of the present application and shall not constitute any limitation to the present application.

[0290] The method for transmitting a direct link positioning reference signal provided in an embodiment of the present application provides a plurality of destination address transmission modes, thereby ensuring the transmission of the destination address between the first terminal and the second terminal.

[0291] Optionally, before sending the destination address to the second terminal, the step further includes:

[0292] Receiving direct link positioning indication information sent by the server;

[0293] The destination address is generated according to the direct link positioning indication information.

[0294] Specifically, the through link positioning indication information is used to indicate relevant information in SL positioning, such as indicating the SL positioning mode, SL-PRS signal sending, etc.

[0295] Optionally, the through link location indication information includes at least one of the following:

[0296] Direct link positioning method;

[0297] Sending terminal indication information, where the sending terminal indication information is used to indicate that the first terminal is an SL-PRS sending terminal;

[0298] Second terminal list;

[0299] SL-PRS serial number;

[0300] SL-PRS resource set information;

[0301] SL-PRS sending period;

[0302] Number of SL-PRS transmissions;

[0303] SL-PRS communication type cast type.

[0304] Specifically, the direct link positioning mode is used to indicate the mode adopted for this SL positioning. The direct link positioning mode can be any of the following: one-way direct link round-trip time (sidelink-round-trip time, SL-RTT) positioning mode, two-way SL-RTT positioning mode, direct link arrival time difference (Sidelink-Time Difference of Arrival, SL-TDOA) positioning mode, direct link arrival angle (Sidelink-Angle of Arrival, SL-AoA) positioning mode, direct link departure angle (Sidelink-Angle of Departure, SL-AoD) positioning mode.

[0305] The sending terminal indication information can be used to indicate that the terminal (first terminal) receiving the sending terminal indication information is a sending terminal of SL-PRS, that is, to indicate that the terminal receiving the sending terminal indication information sends SL-PRS.

[0306] The second terminal list may be used to indicate one or more second terminals to the terminal (first terminal) that has received the sending terminal indication information.

[0307] SL-PRS sequence number, used to indicate the sequence number of SL-PRS.

[0308] SL-PRS resource set information is used to indicate the resource set information of SL-PRS.

[0309] The SL-PRS sending period is used to indicate the period for sending the SL-PRS.

[0310] The number of SL-PRS transmissions is used to indicate the number of times the SL-PRS is sent.

[0311] SL-PRS communication type cast type is used to indicate unicast, multicast or broadcast.

[0312] The embodiment of the present application provides a method for transmitting a direct link positioning reference signal, in which a first terminal generates a destination address according to direct link positioning indication information. Since the destination address is generated by the first terminal according to the direct link indication information, the direct link indication information received by each first terminal is generally different. Even in the case where the direct link indication information received by multiple first terminals is the same, since the destination address is generated by the first terminal itself, there is a certain difference in the process of generating the destination address for each terminal. Therefore, the destination addresses generated by each first terminal are different, thereby achieving the difference in the destination address. The first terminal then sends the destination address to the second terminal, thereby ensuring that SL-PRS transmission is achieved only between the first terminal and the second terminal, thereby avoiding interference between multiple groups of terminals during the SL positioning process.

[0313] Optionally, before sending the destination address to the second terminal, the step further includes:

[0314] generating the destination address based on an address collision avoidance mechanism; or

[0315] The destination address is selected from a set of available destination addresses.

[0316] Specifically, for generating the destination address based on the address collision avoidance mechanism, illustratively, the first terminal does not use a multicast or broadcast ID received within a period of time (the time can be preset) as the destination address; or a destination address (such as a multicast or broadcast ID for SL-PRS) generated by the first terminal for transmitting SL-PRS is the same as the first terminal's own L2 ID, etc. Optionally, the first terminal generates the destination address based on the address collision avoidance mechanism according to the direct link positioning indication information.

[0317] For selecting the destination address from the available destination address set, each first terminal may obtain the available destination address set in advance, the available destination address set may include multiple candidate addresses, and the first terminal selects the destination address from the multiple candidate addresses in the available destination address set. The first terminal may select an ID (such as an L2 ID) that has not been used for a period of time as the destination address.

[0318] In the method for transmitting a direct link positioning reference signal provided in an embodiment of the present application, the first terminal generates the destination address based on an address collision avoidance mechanism to avoid collision between the destination address and other addresses, thereby avoiding affecting the SL-PRS transmission between the first terminal and the second terminal; the first terminal selects the destination address from a set of available destination addresses without having to generate the destination address itself, thereby saving terminal resources and improving terminal execution efficiency.

[0319] Optionally, when the through link location indication information includes the second terminal list, the method further includes:

[0320] The second terminal is determined according to the second terminal list.

[0321] Specifically, the second terminal list includes at least one terminal identifier, and the terminal identifier is used to indicate a terminal.

[0322] In a possible implementation manner, the terminals indicated in the second terminal list are all second terminals, and the first terminal sends the destination address to all the terminals indicated in the second terminal list.

[0323] In one possible implementation, the terminals indicated in the second terminal list are candidate terminals, and the first terminal selects the second terminal from the candidate terminals, such as determining the second terminal based on the channel quality between the first terminal and the second terminal (exemplarily, selecting a terminal whose channel quality is greater than a threshold), SL positioning method, etc.

[0324] In the method for transmitting a through link positioning reference signal provided in an embodiment of the present application, a first terminal determines a second terminal through a second terminal list, thereby sending a destination address to the determined second terminal to achieve SL positioning.

[0325] Optionally, the method further comprises:

[0326] The second terminal is determined based on direct link SL discovery and / or SLPP capability interaction.

[0327] In a possible implementation, the first terminal may discover multiple terminals through the SL and use the discovered terminals as the second terminal;

[0328] In a possible implementation, the first terminal may perform SLPP capability interaction with the candidate terminal, and determine the second terminal according to the SLPP capability of the candidate terminal, such as selecting a candidate terminal with SLPP positioning capability as the second terminal;

[0329] In a possible implementation, the first terminal may discover multiple candidate terminals through SL, the first terminal may perform SLPP capability interaction with the candidate terminals, and determine the second terminal according to the SLPP capabilities of the candidate terminals.

[0330] The embodiment of the present application provides a method for transmitting a direct link positioning reference signal. The first terminal determines the second terminal by interacting based on direct link SL discovery and / or SLPP capability, thereby sending a destination address to the determined second terminal to achieve SL positioning.

[0331] Optionally, the method further comprises at least one of the following:

[0332] Determine how the through link is located; and / or

[0333] Determine the SL-PRS communication type cast type.

[0334] In a possible implementation, the first terminal determines the direct link SL positioning mode based on the received location request information (relative positioning, absolute positioning, positioning QoS, etc.) and SL discovery, capability interaction, etc.

[0335] In a possible implementation manner, the first terminal determines the SL-PRS communication type cast type according to the SL-PRS communication type cast type sent by the server.

[0336] In a possible implementation, the first terminal autonomously determines the SL-PRS communication type cast type according to the SL positioning mode, the second terminal, and capability information of the second terminal.

[0337] The embodiment of the present application provides a method for transmitting a direct link positioning reference signal. The first terminal can select a direct link positioning method suitable for the current scenario or the requirements of the target positioning terminal, thereby improving the positioning accuracy, and the decision-making by the terminal can reduce the server load; the first terminal determines the SL-PRS communication type cast type, and the first terminal can select a communication type that meets the current scenario to ensure the transmission of the SL-PRS.

[0338] Optionally, the method further comprises:

[0339] Send a SL-PRS communication type cast type and / or SL-PRS configuration information to the second terminal, where the SL-PRS communication type cast type and / or the SL-PRS configuration information are used by the second terminal to receive the SL-PRS.

[0340] Specifically, the SL-PRS communication type cast type is used to indicate whether unicast, multicast or broadcast is used for SL-PRS transmission.

[0341] The SL-PRS configuration information is used to indicate the configuration of the SL-PRS.

[0342] Optionally, the SL-PRS configuration information includes at least one of the following:

[0343] SL-PRS serial number;

[0344] SL-PRS resource set information;

[0345] SL-PRS scheduling type, where the SL-PRS scheduling type is used to indicate that the SL-PRS scheduling type is periodic scheduling, semi-persistent scheduling, or dynamic scheduling.

[0346] An embodiment of the present application provides a method for transmitting a direct link positioning reference signal, in which a first terminal indicates a SL-PRS communication type cast type to a second terminal so that the second terminal uses a corresponding cast type for reception, thereby ensuring SL-PRS transmission between the first terminal and the second terminal; the first terminal indicates SL-PRS configuration information to the second terminal so that the second terminal can receive SL-PRS according to the SL-PRS configuration information.

[0347] Optionally, the sending the SL-PRS communication type cast type and / or SL-PRS configuration information to the second terminal includes at least one of the following:

[0348] Sending the SL-PRS communication type cast type and / or the SL-PRS configuration information to the second terminal through a SLPP message;

[0349] Sending the SL-PRS communication type cast type and / or the SL-PRS configuration information to the second terminal through a PC5-S message;

[0350] Sending the SL-PRS communication type cast type and / or the SL-PRS configuration information to the second terminal through a PC5-RRC message;

[0351] Sending the SL-PRS communication type cast type and / or the SL-PRS configuration information to the second terminal through the SL MAC CE;

[0352] The SL-PRS communication type cast type and / or the SL-PRS configuration information are sent to the second terminal via SCI.

[0353] In a possible implementation, when the number of second terminals is one, the SL-PRS communication type cast type and the SL-PRS configuration information can be transmitted to the second terminal in different ways. For example, the SL-PRS communication type cast type is sent to the second terminal through an SLPP message, and the SL-PRS configuration information is sent to the second terminal through a PC5-S message. For combinations of other methods, refer to the above examples and will not be repeated here.

[0354] In a possible implementation, when there are multiple second terminals, the SL-PRS communication type cast type or SL-PRS configuration information can be transmitted to different second terminals in different ways. For example, the SL-PRS communication type cast type is sent to the second terminal UE2 through an SLPP message, and the SL-PRS communication type cast type is sent to the second terminal UE3 through a PC5-S message. For combinations of other methods, refer to the above examples, which will not be repeated here. For examples of transmitting SL-PRS configuration information to different second terminals in different ways, refer to the above examples, which will not be repeated here.

[0355] The method for transmitting a direct link positioning reference signal provided in an embodiment of the present application provides a plurality of transmission modes of SL-PRS communication type cast type and / or SL-PRS configuration information, thereby ensuring the transmission of SL-PRS communication type cast type and / or SL-PRS configuration information between the first terminal and the second terminal.

[0356] Optionally, sending the destination address to the second terminal includes at least one of the following:

[0357] broadcasting the destination address to the second terminal;

[0358] multicasting the destination address to the second terminal;

[0359] Unicast the destination address to the second terminal.

[0360] Optionally, the sending a SL-PRS communication type cast type to the second terminal includes at least one of the following:

[0361] Broadcasting the SL-PRS communication type cast type to the second terminal;

[0362] Multicast the SL-PRS communication type cast type to the second terminal;

[0363] Unicast the SL-PRS communication type cast type to the second terminal.

[0364] In one possible implementation, when the destination address and / or SL-PRS communication type cast type is broadcast to the second terminal, the second terminal can determine whether to receive the destination address and / or SL-PRS communication type cast type. For example, the second terminal receives SL-PRS based on whether the first terminal is the target positioning terminal or anchor terminal of the second terminal. If so, the second terminal receives SL-PRS, otherwise, the second terminal does not receive SL-PRS.

[0365] In a possible implementation, the destination address may be sent to the second terminal through different communication modes for different second terminals. For example, the destination address is unicast to the second terminal UE2, and the destination address is broadcast to the second terminal UE3. For different second terminals, the SL-PRS communication type cast type may be sent to the second terminal through different communication modes. Refer to the example of the destination address, which will not be repeated here.

[0366] In one possible implementation, in order to ensure that the second terminal receives the destination address and / or SL-PRS communication type casttype, the destination address and / or SL-PRS communication type cast type can be sent to the same second terminal in different ways, such as unicasting or broadcasting the destination address to the second terminal UE2. For sending the SL-PRS communication type cast type to the same second terminal, refer to the example of the destination address, which will not be repeated here.

[0367] In an embodiment of the present application, there is a connection between the destination address and the second terminal, and the second terminal is unicast / multicast, or after multicast / broadcast, the terminal chooses whether to receive the SL-PRS, so that the determined second terminal receives the SL-PRS, thereby avoiding the problem of being unable to locate due to the UE that needs to receive the SL-PRS not being able to receive the SL-PRS due to only using Prose / V2X to send the SL-PRS, or the problem of waste of resources due to the UE that does not need to receive the SL-PRS receiving the SL-PRS.

[0368] Figure 4 This is a second flow chart of a method for transmitting a direct link positioning reference signal provided in an embodiment of the present application, such as Figure 4 As shown, an embodiment of the present application provides a method for transmitting a direct link positioning reference signal, which is applied to a second terminal, including:

[0369] Step 210, receiving a destination address sent by the first terminal;

[0370] Specifically, the first terminal is a sending terminal of SL-PRS, the second terminal is a receiving terminal of SL-PRS, the number of the second terminals is one or more, the first terminal and the second terminal are participants in SL positioning, and exemplarily, one of the first terminal and the second terminal is a target positioning terminal, and the other is an auxiliary terminal. The auxiliary terminal may be a terminal with a known absolute position, a terminal with a known relative position, etc., and the location information of the target positioning terminal may be determined through the auxiliary terminal.

[0371] Optionally, the first terminal is a target positioning terminal, and the second terminal is an anchor terminal, a reference terminal or a fixed position terminal; or

[0372] The first terminal is an anchor terminal, a reference terminal or a fixed position terminal, and the second terminal is a target positioning terminal.

[0373] For the introduction of the destination address, please refer to the above introduction and will not be repeated here.

[0374] Optionally, the destination address is a layer 1 identifier or a layer 2 identifier.

[0375] For the introduction of layer 1 identification and layer 2 identification, please refer to the above introduction and will not be repeated here.

[0376] Step 220: Use the destination address to receive a direct link positioning reference signal SL-PRS sent by the first terminal.

[0377] Exemplarily, after receiving the destination address sent by the first terminal, the second terminal may determine a data radio bearer (DRB) corresponding to the destination address, and receive the SL-PRS corresponding to the destination address through the DRB.

[0378] The transmission method of the through link positioning reference signal provided in the embodiment of the present application ensures the deterministic transmission of the SL-PRS between the SL positioning participants during the SL positioning process by determining that the second terminal receives the SL-PRS, thereby ensuring the realization of the SL positioning, and through the deterministic transmission of the SL-PRS between the SL positioning participants, the problem of resource waste caused by the UE that does not need to receive the SL-PRS is avoided. Exemplarily, the second terminal receives the SL-PRS through the destination address provided by the first terminal, and the first terminal and the second terminal group perform the destination address transmission before the SL-PRS transmission, which is equivalent to the first terminal and the second terminal group having determined the receiving terminal and the sending terminal of the SL-PRS before the SL-PRS transmission, so that during the SL-PRS transmission process, the SL-PRS can be received by the determined second terminal.

[0379] Optionally, the receiving a destination address sent by the first terminal includes at least one of the following:

[0380] Receiving the destination address sent by the first terminal through a straight link positioning protocol SLPP message;

[0381] Receiving the destination address sent by the first terminal through a direct communication signal PC5-S message;

[0382] Receiving the destination address sent by the first terminal through a direct communication radio resource control PC5-RRC message;

[0383] Receiving the destination address sent by the first terminal through the media access control layer MAC control unit CE of the direct link SL;

[0384] The destination address sent by the first terminal through direct link control information SCI is received.

[0385] In a possible implementation, for multiple second terminals, different second terminals may receive the destination address in different ways. For example, the second terminal UE2 receives the destination address sent by the first terminal through an SLPP message, and the second terminal UE3 receives the destination address sent by the first terminal through an SCI. For combinations of other methods, refer to the above examples and will not be repeated here.

[0386] In a possible implementation, the same second terminal may receive the destination address sent by the first terminal in different ways to ensure that the second terminal can receive the destination address. Exemplarily, the second terminal UE2 sends the destination address to the first terminal via an SLPP message and SCI.

[0387] It should be understood that the above examples are provided to facilitate understanding of the present application and shall not constitute any limitation to the present application.

[0388] The method for transmitting a direct link positioning reference signal provided in an embodiment of the present application provides a plurality of destination address transmission modes, thereby ensuring the transmission of the destination address between the first terminal and the second terminal.

[0389] Optionally, the method further comprises:

[0390] Receive the SL-PRS communication type cast type and / or SL-PRS configuration information sent by the first terminal, and the SL-PRS communication type cast type and / or the SL-PRS configuration information are used by the second terminal to receive the SL-PRS.

[0391] Specifically, for the SL-PRS communication type cast type, the SL-PRS communication type cast type is used to indicate that the cast type used for SL-PRS transmission is unicast, multicast or broadcast. The second terminal monitors the SL-PRS according to the cast type indicated by the SL-PRS communication type cast type. The transmission method of the direct link positioning reference signal provided in the embodiment of the present application ensures that the SL-PRS communication type cast type between the second terminal and the first terminal is consistent, thereby ensuring the transmission of the SL-PRS.

[0392] The SL-PRS configuration information is used to indicate the configuration of the SL-PRS.

[0393] Optionally, the SL-PRS configuration information includes at least one of the following:

[0394] SL-PRS serial number;

[0395] SL-PRS resource set information;

[0396] SL-PRS scheduling type, where the SL-PRS scheduling type is used to indicate that the SL-PRS scheduling type is periodic scheduling, semi-persistent scheduling, or dynamic scheduling.

[0397] The embodiment of the present application provides a method for transmitting a direct link positioning reference signal, wherein the second terminal obtains the configuration of the SL-PRS through the SL-PRS configuration information, and receives the SL-PRS according to the SL-PRS configuration information, thereby ensuring that the second terminal side receives the SL-PRS.

[0398] Optionally, the receiving the SL-PRS communication type cast type and / or SL-PRS configuration information sent by the first terminal includes at least one of the following:

[0399] Receiving the SL-PRS communication type cast type and / or the SL-PRS configuration information sent by the first terminal through an SLPP message;

[0400] Receiving the SL-PRS communication type cast type and / or the SL-PRS configuration information sent by the first terminal through a PC5-S message;

[0401] Receiving the SL-PRS communication type cast type and / or the SL-PRS configuration information sent by the first terminal through a PC5-RRC message;

[0402] Receiving the SL-PRS communication type cast type and / or the SL-PRS configuration information sent by the first terminal through the SL MAC CE;

[0403] Receive the SL-PRS communication type cast type and / or the SL-PRS configuration information sent by the first terminal through SCI.

[0404] The method for transmitting a direct link positioning reference signal provided in an embodiment of the present application provides a plurality of transmission modes of SL-PRS communication type cast type and / or SL-PRS configuration information, thereby ensuring the transmission of SL-PRS communication type cast type and / or SL-PRS configuration information between the first terminal and the second terminal.

[0405] Optionally, the using the destination address to receive a direct link positioning reference signal SL-PRS sent by the first terminal also includes:

[0406] Confirm SL positioning.

[0407] Optionally, the method further comprises:

[0408] measuring the SL-PRS to obtain a measurement result;

[0409] Send the measurement result to a server or the first terminal.

[0410] In the method for transmitting a direct link positioning reference signal provided in an embodiment of the present application, the second terminal sends a measurement result to the server, and the measurement result is used for location information of the target positioning terminal.

[0411] Optionally, the receiving a destination address sent by the first terminal includes at least one of the following:

[0412] Receiving the destination address unicasted by the first terminal;

[0413] Receiving the destination address multicasted by the first terminal;

[0414] Receive the destination address broadcast by the first terminal.

[0415] Specifically, the second terminal receives the destination address sent by the first terminal in a unicast manner; or

[0416] The second terminal receives the destination address sent by the first terminal in a multicast manner; or

[0417] The second terminal receives the destination address sent by the first terminal in a broadcasting manner.

[0418] Optionally, the receiving a SL-PRS communication type cast type sent by the first terminal includes at least one of the following:

[0419] Receiving the SL-PRS communication type cast type unicast by the first terminal;

[0420] Receiving the SL-PRS communication type cast type multicasted by the first terminal;

[0421] Receive the SL-PRS communication type cast type broadcast by the first terminal.

[0422] Specifically, the second terminal receives the SL-PRS communication type cast type sent by the first terminal in a unicast manner; or

[0423] The second terminal receives the SL-PRS communication type cast type sent by the first terminal in a multicast manner; or

[0424] The second terminal receives the SL-PRS communication type cast type sent by the first terminal in a broadcast manner.

[0425] For the same second terminal receiving the destination address and / or SL-PRS communication type cast type sent by the first terminal through different communication methods, the second terminal can receive the destination address sent by the first terminal through broadcast and unicast. For the SL-PRS communication type cast type, refer to the example of the destination address and will not be repeated here.

[0426] For different second terminals receiving the destination address and / or SL-PRS communication type cast type sent by the first terminal through different communication methods, the second terminal UE2 can receive the destination address sent by the first terminal through broadcast, and the second terminal UE3 can receive the destination address sent by the first terminal through unicast. For the SL-PRS communication type cast type, refer to the example of the destination address, which will not be repeated here.

[0427] Optionally, in the case of receiving the destination address and / or the SL-PRS communication type cast type broadcast by the first terminal, the method further includes:

[0428] Determine to receive the SL-PRS sent by the first terminal.

[0429] Specifically, in the case where the second terminal receives the destination address and / or SL-PRS communication type cast type sent by the first terminal through broadcast, the second terminal can determine whether to receive the destination address and / or SL-PRS communication type cast type. For example, the second terminal receives SL-PRS based on whether the first terminal is the target positioning terminal or anchor terminal of the second terminal. If so, the second terminal receives SL-PRS, otherwise, the second terminal does not receive SL-PRS.

[0430] In an embodiment of the present application, there is a direct correlation between the destination address and the second terminal, such as: in a possible implementation, when the destination address and / or the SL-PRS communication type cast type is received in a unicast manner, the terminal receiving the destination address and / or the SL-PRS communication type cast type is the second terminal that needs to receive the SL-PRS, thereby realizing the SL-PRS reception by the determined second terminal;

[0431] In a possible implementation, when the destination address and / or SL-PRS communication type casttype are received by multicast, the same group of terminals that receive the destination address and / or SL-PRS communication type cast type may all be second terminals that need to receive the SL-PRS, thereby achieving reception by a determined second terminal, or, the same group of terminals that receive the destination address and / or SL-PRS communication type cast type, after receiving the destination address and / or SL-PRS communication type cast type, determine whether to receive the SL-PRS, determine that the terminal receiving the SL-PRS is the second terminal, and the second terminal receives the SL-PRS, thereby achieving SL-PRS reception by the determined second terminal;

[0432] In a possible implementation manner, when a destination address and / or a SL-PRS communication type casttype is received by broadcasting, a terminal that receives the destination address and / or the SL-PRS communication type cast type determines whether to receive the SL-PRS after receiving the destination address and / or the SL-PRS communication type cast type, determines that the terminal that receives the SL-PRS is a second terminal, and the second terminal receives the SL-PRS, thereby implementing SL-PRS reception by the determined second terminal;

[0433] The method for transmitting a direct link positioning reference signal provided in an embodiment of the present application, by having a determined second terminal perform SL-PRS reception, avoids the problem of being unable to position caused by the transmitting terminal (first terminal) only using Prose / V2X to send SL-PRS, resulting in the UE that needs to receive the SL-PRS being unable to receive the SL-PRS, and the problem of waste of resources caused by the UE that does not need to receive the SL-PRS receiving the SL-PRS.

[0434] Figure 5 This is a flow chart of the third method for transmitting a direct link positioning reference signal provided in an embodiment of the present application, such as Figure 5 As shown, an embodiment of the present application provides a method for transmitting a direct link positioning reference signal, which is applied to a server, including:

[0435] Step 310: Send direct link positioning indication information to the first terminal, where the direct link positioning indication information is used to generate a destination address, and the destination address is used to transmit a direct link positioning reference signal SL-PRS.

[0436] Specifically, when the first terminal is online, the server may be a LMF; when the first terminal is offline, the server may be a service terminal (server UE).

[0437] It should be understood that the destination address is used to transmit the SL-PRS between the first terminal and the second terminal, and the destination address is sent by the first terminal to the second terminal.

[0438] For the introduction of the direct link positioning indication information and the destination address, please refer to the above introduction and will not be repeated here.

[0439] The embodiment of the present application provides a method for transmitting a direct link positioning reference signal, in which the destination address is used to transmit the SL-PRS between the first terminal and the second terminal, thereby ensuring the deterministic transmission of the SL-PRS between the SL positioning participants during the SL positioning process, thereby ensuring the realization of SL positioning.

[0440] Optionally, the method further comprises:

[0441] receiving a measurement result sent by the second terminal, where the measurement result is obtained based on the measurement of the SL-PRS;

[0442] The location information of the target positioning terminal is determined based on the measurement result.

[0443] The method for transmitting a direct link positioning reference signal provided in an embodiment of the present application realizes the positioning of a target positioning terminal.

[0444] The present application is introduced below in conjunction with a number of embodiments.

[0445] The embodiment numbers in this application are only used to distinguish each embodiment.

[0446] Embodiment 1: The server notifies the target positioning terminal to send SL-PRS

[0447] In this embodiment, the server is LMF or server UE, the target positioning terminal serves as the first terminal to send SL-PRS, and the anchor terminal (Anchor UE) serves as the second terminal to receive SL-PRS.

[0448] Figure 6 This is a fourth flow chart of the method for transmitting a direct link positioning reference signal provided in an embodiment of the present application, such as Figure 6 As shown, an embodiment of the present application provides a method for transmitting a direct link positioning reference signal, including:

[0449] Before entering step 1 of this embodiment, there may be processes such as capability interaction, location request, auxiliary data transmission, discovery between Target UE and Anchor UE, and Anchor UE selection between the Target UE, Anchor UE, and the server. This embodiment does not limit the above processes. This embodiment assumes that the processes have been completed between the Target UE, Anchor UE, and the server.

[0450] Step 1: The server (LMF / server UE) sends an SLPP message to the Target UE. The Target UE receives the SLPP message sent by the server (LMF / server UE), which contains direct link positioning indication information, specifically including one or a combination of the following information:

[0451] SL positioning mode, such as unidirectional SL-RTT, bidirectional SL-RTT, SL-TDOA, SL-AoA and SL-AoD; for example, the SL positioning mode of this SL positioning is SL-TDOA;

[0452] Send terminal indication information to indicate that the Target UE is the SL-PRS sending UE;

[0453] A second terminal list, in this embodiment, the second terminal list is a SL positioning Anchor UE identification list, which is used to indicate that the Anchor UEs of this SL positioning are Anchor UE1, Anchor UE2 and Anchor UE3, that is, indicating that the second terminals are Anchor UE1, Anchor UE2 and Anchor UE3;

[0454] SL-PRS transmission period, SL-PRS transmission times and other information;

[0455] SL-PRS sends the cast type. The cast type located by SL this time is groupcast.

[0456] Step 2: Target UE generates L2 ID and determines the SL-PRS communication type cast type:

[0457] It should be understood that the L2 ID generated by the Target UE is the destination address. Exemplarily, based on the information in step 1, the Target UE generates the destination address: multicast L2 ID=L2 ID1, and the Target UE determines that the communication type cast type is multicast groupcast.

[0458] Step 3: The Target UE sends a SL message containing the destination address and the SL-PRS communication type cast type to the Anchor UE:

[0459] Taking the SL message as an SLPP message as an example, the Target UE sends the SLPP message to Anchor UE1, Anchor UE2 and Anchor UE3 respectively through SL unicast. The SLPP message includes the SL-PRS communication type cast tpye (indicated as groupcast) and the destination address: SL-PRS multicast L2 ID (L2 ID1).

[0460] Optionally, the SLPP message further includes SL-PRS configuration information, where the SL-PRS configuration includes at least one of the following information:

[0461] SL-PRS serial number;

[0462] SL-PRS resource set information;

[0463] SL-PRS transmission type: The SL-PRS transmission type indicates whether the SL-PRS transmission type is periodic, semi-persistent or dynamic.

[0464] Optionally, after step 3, the Anchor UE may send a completion message after receiving the configuration information.

[0465] Optionally, the SL-PRS communication type cast tpye and destination address can be carried by means other than SLPP, such as PC5-S message, PC5-RRC message, SL MAC CE, etc.

[0466] Step 4: Anchor UE sets the received L2 ID as the receiving ID and sets the received SL-PRS communication type casttype as the receiving type:

[0467] After receiving the message in step 3, Anchor UE1, Anchor UE2 and Anchor UE3 notify the physical layer to use L2 ID1 as the receiving ID of the multicast SL-PRS, and receive the SL-PRS through the SL-PRS communication type cast type. If the SL-PRS communication type cast type is multicast, the SL-PRS is monitored through multicast.

[0468] Step 5: SL-PRS Transmission:

[0469] The Target UE sends the SL-PRS, with the destination address being L2 ID1 and the cast type being groupcast. Anchor UE1, Anchor UE2, and Anchor UE3 use the L2 ID as the receiving ID and monitor, receive, and measure the SL-PRS through multicast.

[0470] Step 6: Anchor UE sends SLPP message to the server:

[0471] Anchor UE1, Anchor UE2 and Anchor UE3 report the measurement result of step 5 to LMF / server UE through SLPP message.

[0472] In this embodiment, the SL-PRS transmitting terminal generates the destination address and cast type of the SL-PRS, and informs the SL-PRS receiving terminal of the destination address and cast type through high-level signaling. After the signaling exchanges this information, the SL-PRS transmitting terminal and the receiving terminal use the destination address and cast type of the SL-PRS to perform SL-PRS transmission, reception and measurement. In this embodiment, multicast positioning signals are sent and measured between UEs based on Sidelink. This solves the problem that the participants in the SL positioning measurement do not belong to a group due to the reliance on the application layer or ProSe / V2X layer to provide the multicast SL L2 ID, or that the UE has to receive and detect all SL-PRS due to the mapping of SLPP to an L2 ID.

[0473] Embodiment 2: The server notifies the anchor terminal to send SL-PRS

[0474] In this embodiment, the server is LMF or server UE, the anchor terminal is a terminal with a fixed position, the anchor terminal (Anchor UE) serves as a first terminal to send SL-PRS, and the target positioning terminal serves as a second terminal to receive SL-PRS.

[0475] Figure 7 This is a flowchart of a method for transmitting a direct link positioning reference signal provided in an embodiment of the present application, as shown in FIG. Figure 7 As shown, an embodiment of the present application provides a method for transmitting a direct link positioning reference signal, including:

[0476] Step 1: The server sends an SLPP message to the Anchor UE:

[0477] The LMF / server UE sends a SLPP message to the Anchor UE1 (the first terminal), instructing the Anchor UE1 to periodically broadcast the SL-PRS signal.

[0478] Step 2: Anchor UE generates L2 ID and determines the SL-PRS communication type cast type:

[0479] It should be understood that the L2 ID generated by the Anchor UE is the destination address. Exemplarily, the Anchor UE1 generates the destination address: the L2 ID (L2 ID2) broadcast by the SL-PRS, and determines the SL-PRS communication type cast type as broadcast.

[0480] Step 3: The Anchor UE sends a SL message containing the destination address and the SL-PRS communication type cast type to the Target UE:

[0481] Taking the SL message as an SLPP message as an example, Anchor UE1 periodically uses the SLPP mapped broadcast L2ID (L2 ID1) to broadcast the SLPP message. The SLPP message includes the SL-PRS communication type cast tpye (indicated as broadcast) and the destination address: the L2 ID of the L2 ID broadcast by the SL-PRS.

[0482] It should be understood that the broadcast L2 ID (L2 ID1) mapped by SLPP is the SL policy. SLPP as a SL service can be mapped to an L2 ID, and the policy of each UE is the same.

[0483] Step 4: The Target UE sets the received L2 ID as the receiving ID and sets the received SL-PRS communication type casttype as the receiving type:

[0484] After receiving the SLPP message from Anchor UE1, UE1, UE2, UE3, UE4 and UE5 obtain the destination address sent by Anchor UE1: L2 ID2 and SL-PRS communication type cast type (broadcast). Among them, UE1, UE2 and UE3 need to measure the SL-PRS sent by anchor UE1, then UE1, UE2 and UE3 are Target UE, which can be written as Target UE1, TargetUE2 and Target UE3 to notify the physical layer to use L2 ID2 as the receiving ID of broadcast SL-PRS and monitor SL-PRS through broadcast.

[0485] Step 5: SL-PRS Transmission:

[0486] Anchor UE1 periodically sends SL-PRS, with the destination address being L2 ID2 and the cast type being broadcast. Target UE1, Target UE2, and Target UE3 receive and measure the SL-PRS.

[0487] Step 6: Target UE sends SLPP message to the server:

[0488] Target UE1, Target UE2 and Target UE3 report the measurement results or location information to LMF / serverUE.

[0489] It should be understood that in this embodiment, LMF can trigger multiple Anchor UEs to periodically broadcast SL-PRS information (such as destination address and SL-PRS communication type cast type), and the destination L2 ID of the SL-PRS generated by each anchor UE is different.

[0490] In this embodiment, the transmitting terminal of the SL-PRS generates the destination address and cast type of the SL-PRS, and informs the receiving terminal of the SL-PRS of the destination address and cast type through high-level signaling. After the signaling exchanges this information, the transmitting terminal and the receiving terminal of the SL-PRS use the destination address and cast type of the SL-PRS to perform SL-PRS transmission, reception and measurement. In this embodiment, the UEs transmit and measure broadcast positioning signals based on Sidelink. This solves the problem that the UE needs to receive and detect all SL-PRSs due to the mapping of SLPP to an L2 ID.

[0491] Example 3: Target UE determines positioning mode, SL-PRS communication type cast type and destination address

[0492] Figure 8 This is a sixth flow chart of the method for transmitting a direct link positioning reference signal provided in an embodiment of the present application, such as Figure 8 As shown, an embodiment of the present application provides a method for transmitting a direct link positioning reference signal, including:

[0493] Before step 1, the Target UE receives the location request information, performs the SL discovery process, and exchanges SL positioning capabilities with the candidate Anchor UE.

[0494] Step 1: Target UE performs SL positioning and Anchor UE selection:

[0495] The Target UE determines the SL positioning mode based on the location request information (relative positioning, absolute positioning, positioning QoS, etc.), the SL discovery process (discovered UEs) and the capability interaction process (obtained terminal capability information, such as SLPP capability information);

[0496] Based on at least one of the location request information, the information obtained in the SL discovery process and the capability interaction process, and the SL positioning method, Anchor UE1, Anchor UE2 and Anchor UE3 are selected as Anchor UEs from the candidate Anchor UEs.

[0497] Step 2: Target UE generates L2 ID and determines SL-PRS communication type:

[0498] It should be understood that the L2 ID generated by the Target UE is the destination address. Exemplarily, based on the information in step 1, the Target UE generates the destination address: SL-PRS multicast L2 ID = L2 ID1, and the Target UE determines that the SL-PRS communication type cast type is groupcast.

[0499] Step 3: Target UE sends SLPP messages to Anchor UE1, Anchor UE2 and Anchor UE3 respectively through SL unicast. The SLPP message contains SL-PRS communication type (indicated as multicast groupcast), destination address: SL-PRS multicast L2 ID (L2 ID1) and / or SL-PRS configuration. The SL-PRS configuration contains at least one of the following information:

[0500] SL-PRS serial number;

[0501] SL-PRS resource set information;

[0502] SL-PRS resource set information;

[0503] SL-PRS transmission type: The SL-PRS transmission type indicates whether the SL-PRS transmission type is periodic, semi-persistent or dynamic.

[0504] Optionally, after step 3, the Anchor UE may send a completion message after receiving the configuration information.

[0505] Optionally, the SL-PRS communication type cast tpye and destination address can be carried by means other than SLPP, such as PC5-S message, PC5-RRC message, SL MAC CE, etc.

[0506] Step 4: Anchor UE sets the received L2 ID as the receiving ID and sets the received SL-PRS communication type casttype as the receiving type:

[0507] After receiving the message in step 3, Anchor UE1, Anchor UE2 and Anchor UE3 notify the physical layer to use L2 ID1 as the receiving ID of the multicast SL-PRS. Anchor UE uses multicast as the receiving type and monitors SL-PRS through multicast.

[0508] Step 5: SL-PRS Transmission:

[0509] The Target UE sends a SL-PRS with the destination address being L2 ID1 and the cast type being groupcast. Anchor UE1, Anchor UE2, and Anchor UE3 receive and measure the SL-PRS.

[0510] Step 6: Anchor UE sends SLPP message to Target UE:

[0511] Anchor UE1, Anchor UE2 and Anchor UE3 report the measurement result of step 5 to the Target UE or Server UE through the SLPP message.

[0512] The device provided in the embodiments of the present application is introduced below.

[0513] Fig. 9 is one of the structural schematic diagrams of a transmission device for a through link positioning reference signal provided in an embodiment of the present application, such as Fig. 9 As shown, an embodiment of the present application provides a transmission device for a direct link positioning reference signal, which is applied to a first terminal and includes:

[0514] A destination address sending unit 410 is configured to send a destination address to a second terminal, where the destination address is used by the second terminal to receive a direct link positioning reference signal SL-PRS;

[0515] The reference signal sending unit 420 is configured to send the SL-PRS to the second terminal using the destination address.

[0516] Optionally, the device further includes an indication information receiving unit and a first destination address generating unit;

[0517] The indication information receiving unit is used to receive the direct link positioning indication information sent by the server;

[0518] The first destination address generating unit is configured to generate the destination address according to the direct link location indication information.

[0519] Optionally, the through link location indication information includes at least one of the following:

[0520] Direct link positioning method;

[0521] Sending terminal indication information, where the sending terminal indication information is used to indicate that the first terminal is an SL-PRS sending terminal;

[0522] Second terminal list;

[0523] SL-PRS serial number;

[0524] SL-PRS resource set information;

[0525] SL-PRS sending period;

[0526] Number of SL-PRS transmissions;

[0527] SL-PRS communication type cast type.

[0528] Optionally, the apparatus further includes a second terminal determining unit, and when the direct link positioning indication information includes the second terminal list, the second terminal determining unit is configured to determine the second terminal according to the second terminal list.

[0529] Optionally, the device further comprises at least one of the following:

[0530] A positioning mode determining unit, used to determine a direct link positioning mode; and / or

[0531] The communication type determination unit is used to determine the SL-PRS communication type cast type.

[0532] Optionally, the device further comprises a second destination address generating unit or a destination address selecting unit;

[0533] The second destination address generating unit is configured to generate the destination address based on an address collision avoidance mechanism; or

[0534] The destination address selection unit is used to select the destination address from a set of available destination addresses.

[0535] Optionally, the destination address is a layer 1 identifier or a layer 2 identifier.

[0536] Optionally, sending the destination address to the second terminal includes at least one of the following:

[0537] Sending the destination address to the second terminal via a straight link positioning protocol SLPP message;

[0538] Sending the destination address to the second terminal via a direct communication signal PC5-S message;

[0539] Sending the destination address to the second terminal through a direct communication radio resource control PC5-RRC message;

[0540] Sending the destination address to the second terminal via a media access control layer MAC control unit CE of a direct link SL;

[0541] The destination address is sent to the second terminal through direct link control information SCI.

[0542] Optionally, the device also includes a first sending unit, which is used to send a SL-PRS communication type cast type and / or SL-PRS configuration information to the second terminal, and the SL-PRS communication type cast type and / or the SL-PRS configuration information is used for the second terminal to receive SL-PRS.

[0543] Optionally, the sending the SL-PRS communication type cast type and / or SL-PRS configuration information to the second terminal includes at least one of the following:

[0544] Sending the SL-PRS communication type cast type and / or the SL-PRS configuration information to the second terminal through a SLPP message;

[0545] Sending the SL-PRS communication type cast type and / or the SL-PRS configuration information to the second terminal through a PC5-S message;

[0546] Sending the SL-PRS communication type cast type and / or the SL-PRS configuration information to the second terminal through a PC5-RRC message;

[0547] Sending the SL-PRS communication type cast type and / or the SL-PRS configuration information to the second terminal through the SL MAC CE;

[0548] The SL-PRS communication type cast type and / or the SL-PRS configuration information are sent to the second terminal via SCI.

[0549] Optionally, the SL-PRS configuration information includes at least one of the following:

[0550] SL-PRS serial number;

[0551] SL-PRS resource set information;

[0552] SL-PRS scheduling type, where the SL-PRS scheduling type is used to indicate that the SL-PRS scheduling type is periodic scheduling, semi-persistent scheduling, or dynamic scheduling.

[0553] Optionally, the first terminal is a target positioning terminal, and the second terminal is an anchor terminal, a reference terminal or a fixed position terminal; or

[0554] The first terminal is an anchor terminal, a reference terminal or a fixed position terminal, and the second terminal is a target positioning terminal.

[0555] Optionally, the second terminal determining unit is used to determine the second terminal based on direct link SL discovery and / or SLPP capability interaction.

[0556] The methods and devices provided in each embodiment of the present application are based on the same application concept. Since the transmission method of the direct link positioning reference signal applied to the first terminal and the transmission device of the direct link positioning reference signal applied to the first terminal solve the problem in a similar manner and can achieve the same technical effect, the implementation of the device and the method can refer to each other, and the repeated parts will not be repeated.

[0557] Fig.10 This is a second structural diagram of a transmission device for a direct link positioning reference signal provided in an embodiment of the present application, such as Fig.10 As shown, an embodiment of the present application provides a transmission device for a direct link positioning reference signal, which is applied to a second terminal and includes:

[0558] A destination address receiving unit 510 is configured to receive a destination address sent by a first terminal;

[0559] The reference signal receiving unit 520 is configured to receive a direct link positioning reference signal SL-PRS sent by the first terminal using the destination address.

[0560] Optionally, the destination address is a layer 1 identifier or a layer 2 identifier.

[0561] Optionally, the receiving a destination address sent by the first terminal includes:

[0562] Receiving the destination address sent by the first terminal via a straight link positioning protocol SLPP message; or

[0563] receiving the destination address sent by the first terminal via a direct communication signal PC5-S message; or

[0564] Receiving the destination address sent by the first terminal through a direct communication radio resource control PC5-RRC message; or

[0565] Receiving the destination address sent by the first terminal through a direct link SL media access control layer MAC control unit CE; or

[0566] The destination address sent by the first terminal through direct link control information SCI is received.

[0567] Optionally, the first terminal is a target positioning terminal, and the second terminal is an anchor terminal, a reference terminal or a fixed position terminal; or

[0568] The first terminal is an anchor terminal, a reference terminal or a fixed position terminal, and the second terminal is a target positioning terminal.

[0569] Optionally, the device also includes a first receiving unit, which is used to receive the SL-PRS communication type cast type and / or SL-PRS configuration information sent by the first terminal, and the SL-PRS communication type casttype and / or the SL-PRS configuration information are used for the second terminal to receive the SL-PRS.

[0570] Optionally, the receiving the SL-PRS communication type cast type and / or SL-PRS configuration information sent by the first terminal includes at least one of the following:

[0571] Receiving the SL-PRS communication type cast type and / or the SL-PRS configuration information sent by the first terminal through an SLPP message;

[0572] Receiving the SL-PRS communication type cast type and / or the SL-PRS configuration information sent by the first terminal through a PC5-S message;

[0573] Receiving the SL-PRS communication type cast type and / or the SL-PRS configuration information sent by the first terminal through a PC5-RRC message;

[0574] Receiving the SL-PRS communication type cast type and / or the SL-PRS configuration information sent by the first terminal through the SL MAC CE;

[0575] Receive the SL-PRS communication type cast type and / or the SL-PRS configuration information sent by the first terminal through SCI.

[0576] Optionally, the SL-PRS configuration information includes at least one of the following:

[0577] SL-PRS serial number;

[0578] SL-PRS resource set information;

[0579] SL-PRS scheduling type, where the SL-PRS scheduling type is used to indicate that the SL-PRS scheduling type is periodic scheduling, semi-persistent scheduling, or dynamic scheduling.

[0580] Optionally, the device further includes a measurement result reporting unit, and the measurement result reporting unit is used to:

[0581] measuring the SL-PRS to obtain a measurement result;

[0582] Send the measurement result to the first terminal or the server.

[0583] The methods and devices provided in each embodiment of the present application are based on the same application concept. Since the transmission method of the direct link positioning reference signal applied to the second terminal and the transmission device of the direct link positioning reference signal applied to the second terminal solve the problem in a similar manner and can achieve the same technical effect, the implementation of the device and the method can refer to each other, and the repeated parts will not be repeated.

[0584] Fig.11 3 is a structural diagram of a transmission device for a direct link positioning reference signal provided in an embodiment of the present application, such as Fig.11 As shown, an embodiment of the present application provides a transmission device for a direct link positioning reference signal, which is applied to a first terminal and includes:

[0585] The indication information sending unit 610 is configured to send direct link positioning indication information to the first terminal, where the direct link positioning indication information is used to generate a destination address, and the destination address is used to transmit a direct link positioning reference signal SL-PRS.

[0586] The methods and devices provided in each embodiment of the present application are based on the same application concept. Since the transmission method of the direct link positioning reference signal applied to the server and the transmission device of the direct link positioning reference signal applied to the server solve the problem in a similar manner and can achieve the same technical effect, the implementation of the device and the method can refer to each other, and the repeated parts will not be repeated.

[0587] 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.

[0588] 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.

[0589] Fig.12 A schematic diagram of the structure of the first terminal provided in the embodiment of the present application, such as Fig.12 As shown, the first terminal includes a memory 720, a transceiver 700 and a processor 710; wherein the processor 710 and the memory 720 may also be arranged physically separately.

[0590] The memory 720 is used to store a computer program; the transceiver 700 is used to send and receive data under the control of the processor 710; the processor 710 calls the computer program stored in the memory 720 to perform any operation corresponding to the transmission of the direct link positioning reference signal applied to the first terminal provided in the embodiment of the present application according to the obtained executable instructions, for example:

[0591] Sending a destination address to the second terminal, where the destination address is used by the second terminal to receive a direct link positioning reference signal SL-PRS;

[0592] Using the destination address, send the SL-PRS to the second terminal.

[0593] Among them, Fig.12In the embodiment, the bus interface 740 may include any number of interconnected buses and bridges, specifically connecting various circuits of one or more processors represented by the processor 710 and the memory represented by the memory 720. The bus interface 740 may also connect various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 700 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 may include wireless channels, wired channels, optical cables, and other transmission media. For different first terminals, a user interface 730 may also be included, which may also be an interface capable of externally connecting or internally connecting required devices, and the connected devices may include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

[0594] The processor 710 is responsible for managing the bus architecture and general processing, and the memory 720 can store data used by the processor 710 when performing operations.

[0595] Optionally, the processor 710 may be a CPU (central processing unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array) or a CPLD (Complex Programmable Logic Device), and the processor may also adopt a multi-core architecture.

[0596] Optionally, before sending the destination address to the second terminal, the step further includes:

[0597] Receiving direct link positioning indication information sent by the server;

[0598] The destination address is generated according to the direct link positioning indication information.

[0599] Optionally, the through link location indication information includes at least one of the following:

[0600] Direct link positioning method;

[0601] Sending terminal indication information, where the sending terminal indication information is used to indicate that the first terminal is a SL-PRS sending terminal;

[0602] Second terminal list;

[0603] SL-PRS serial number;

[0604] SL-PRS resource set information;

[0605] SL-PRS sending period;

[0606] Number of SL-PRS transmissions;

[0607] SL-PRS communication type cast type.

[0608] Optionally, when the through link location indication information includes the second terminal list, the operation further includes:

[0609] The second terminal is determined according to the second terminal list.

[0610] Optionally, the operation further includes at least one of the following:

[0611] Determine how the through link is located; and / or

[0612] Determine the SL-PRS communication type cast type.

[0613] Optionally, before sending the destination address to the second terminal, the step further includes:

[0614] generating the destination address based on an address collision avoidance mechanism; or

[0615] The destination address is selected from a set of available destination addresses.

[0616] Optionally, the destination address is a layer 1 identifier or a layer 2 identifier.

[0617] Optionally, sending the destination address to the second terminal includes at least one of the following:

[0618] Sending the destination address to the second terminal via a straight link positioning protocol SLPP message;

[0619] Sending the destination address to the second terminal via a direct communication signal PC5-S message;

[0620] Sending the destination address to the second terminal through a direct communication radio resource control PC5-RRC message;

[0621] Sending the destination address to the second terminal via a media access control layer MAC control unit CE of a direct link SL;

[0622] The destination address is sent to the second terminal through direct link control information SCI.

[0623] Optionally, the operation further includes:

[0624] Send a SL-PRS communication type cast type and / or SL-PRS configuration information to the second terminal, where the SL-PRS communication type cast type and / or the SL-PRS configuration information are used by the second terminal to receive the SL-PRS.

[0625] Optionally, the sending the SL-PRS communication type cast type and / or SL-PRS configuration information to the second terminal includes at least one of the following:

[0626] Sending the SL-PRS communication type cast type and / or the SL-PRS configuration information to the second terminal through a SLPP message;

[0627] Sending the SL-PRS communication type cast type and / or the SL-PRS configuration information to the second terminal through a PC5-S message;

[0628] Sending the SL-PRS communication type cast type and / or the SL-PRS configuration information to the second terminal through a PC5-RRC message;

[0629] Sending the SL-PRS communication type cast type and / or the SL-PRS configuration information to the second terminal through the SL MAC CE;

[0630] The SL-PRS communication type cast type and / or the SL-PRS configuration information are sent to the second terminal via SCI.

[0631] Optionally, the SL-PRS configuration information includes at least one of the following:

[0632] SL-PRS serial number;

[0633] SL-PRS resource set information;

[0634] SL-PRS scheduling type, where the SL-PRS scheduling type is used to indicate that the SL-PRS scheduling type is periodic scheduling, semi-persistent scheduling, or dynamic scheduling.

[0635] Optionally, the first terminal is a target positioning terminal, and the second terminal is an anchor terminal, a reference terminal or a fixed position terminal; or

[0636] The first terminal is an anchor terminal, a reference terminal or a fixed position terminal, and the second terminal is a target positioning terminal.

[0637] Optionally, the operation further includes:

[0638] The second terminal is determined based on direct link SL discovery and / or SLPP capability interaction.

[0639] It should be noted here that the above-mentioned first terminal provided in the embodiment of the present application can implement all the method steps implemented in the above-mentioned embodiment of the transmission method of the direct link positioning reference signal applied to the first terminal, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

[0640] Fig.13 A schematic diagram of the structure of the second terminal provided in the embodiment of the present application, such as Fig.13 As shown, the second terminal includes a memory 820, a transceiver 800 and a processor 810; wherein the processor 810 and the memory 820 may also be arranged physically separately.

[0641] The memory 820 is used to store a computer program; the transceiver 800 is used to send and receive data under the control of the processor 810; the processor 810 calls the computer program stored in the memory 820 to perform any operation corresponding to the transmission of the direct link positioning reference signal applied to the first terminal provided in the embodiment of the present application according to the obtained executable instructions, for example:

[0642] receiving a destination address sent by the first terminal;

[0643] The direct link positioning reference signal SL-PRS sent by the first terminal is received using the destination address.

[0644] Among them, Fig.13 In the embodiment, the bus interface 840 may include any number of interconnected buses and bridges, specifically connecting various circuits of one or more processors represented by the processor 810 and the memory represented by the memory 820. The bus interface 840 may also connect various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 800 may be a plurality of components, namely, a transmitter and a receiver, and provide a unit for communicating with various other devices on a transmission medium, which transmission medium includes wireless channels, wired channels, optical cables, and other transmission media. For different second terminals, a user interface 830 may also be included, which may also be an interface capable of externally connecting or 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.

[0645] The processor 810 is responsible for managing the bus architecture and general processing, and the memory 820 can store data used by the processor 810 when performing operations.

[0646] Optionally, the processor 810 may be a CPU (central processing unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array) or a CPLD (Complex Programmable Logic Device), and the processor may also adopt a multi-core architecture.

[0647] Optionally, the destination address is a layer 1 identifier or a layer 2 identifier.

[0648] Optionally, the first terminal is a target positioning terminal, and the second terminal is an anchor terminal, a reference terminal or a fixed position terminal; or

[0649] The first terminal is an anchor terminal, a reference terminal or a fixed position terminal, and the second terminal is a target positioning terminal.

[0650] Optionally, the operation further includes:

[0651] Receive the SL-PRS communication type cast type and / or SL-PRS configuration information sent by the first terminal, and the SL-PRS communication type cast type and / or the SL-PRS configuration information are used by the second terminal to receive the SL-PRS.

[0652] Optionally, the SL-PRS configuration information includes at least one of the following:

[0653] SL-PRS serial number;

[0654] SL-PRS resource set information;

[0655] SL-PRS scheduling type, where the SL-PRS scheduling type is used to indicate that the SL-PRS scheduling type is periodic scheduling, semi-persistent scheduling, or dynamic scheduling.

[0656] Optionally, the operation further includes:

[0657] measuring the SL-PRS to obtain a measurement result;

[0658] Send the measurement result to the first terminal or the server.

[0659] It should be noted here that the above-mentioned second terminal provided in the embodiment of the present application can implement all the method steps implemented in the above-mentioned embodiment of the transmission method of the direct link positioning reference signal applied to the second terminal, and can achieve the same technical effect. The parts and beneficial effects that are the same as those in the method embodiment will not be described in detail here.

[0660] Fig.14 is a schematic diagram of the structure of the server provided in the embodiment of the present application, such as Fig.14 As shown, the server includes a memory 920, a transceiver 900, and a processor 910, wherein:

[0661] The memory 920 is used to store computer programs; the transceiver 900 is used to send and receive data under the control of the processor 910; the processor 910 is used to read the computer program in the memory 920 and perform the following operations:

[0662] Sending direct link positioning indication information to the first terminal, where the direct link positioning indication information is used to generate a destination address, and the destination address is used to transmit a direct link positioning reference signal SL-PRS.

[0663] Among them, Fig.14 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 910 and various circuits of memory represented by memory 920 are linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface 930 provides an interface. The transceiver 900 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. The processor 910 is responsible for managing the bus architecture and general processing, and the memory 920 may store data used by the processor 910 when performing operations.

[0664] The processor 910 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.

[0665] It should be noted here that the above-mentioned server provided in the embodiment of the present application can implement all the method steps implemented in the above-mentioned embodiment of the transmission method of the direct link positioning reference signal applied to the server, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

[0666] On the other hand, an embodiment of the present application further provides a processor-readable storage medium, wherein the processor-readable storage medium stores a computer program, and the computer program is used to cause the processor to execute the transmission method of the direct link positioning reference signal applied to the first terminal provided in the above embodiments, including:

[0667] Sending a destination address to the second terminal, where the destination address is used by the second terminal to receive a direct link positioning reference signal SL-PRS;

[0668] Using the destination address, send the SL-PRS to the second terminal.

[0669] On the other hand, an embodiment of the present application further provides a processor-readable storage medium, wherein the processor-readable storage medium stores a computer program, and the computer program is used to cause the processor to execute the transmission method of the direct link positioning reference signal applied to the second terminal provided in the above embodiments, including:

[0670] receiving a destination address sent by the first terminal;

[0671] The direct link positioning reference signal SL-PRS sent by the first terminal is received using the destination address.

[0672] On the other hand, an embodiment of the present application further provides a processor-readable storage medium, wherein the processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the transmission method of the through link positioning reference signal applied to the server provided in the above embodiments, including:

[0673] Sending direct link positioning indication information to the first terminal, where the direct link positioning indication information is used to generate a destination address, and the destination address is used to transmit a direct link positioning reference signal SL-PRS.

[0674] The processor-readable storage medium can be any available medium or data storage device that can be accessed by the processor, 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.

[0675] In some embodiments, a non-transitory readable storage medium is further provided, wherein the non-transitory readable storage medium stores a computer program, and the computer program is used to enable a processor to execute the method for transmitting a direct link positioning reference signal provided in the above-mentioned method embodiments.

[0676] Specifically, the above-mentioned non-transitory readable storage medium provided in the embodiment of the present application can implement all the method steps implemented by the above-mentioned method embodiments, and can achieve the same technical effects. The parts and beneficial effects that are the same as the method embodiments in this embodiment will not be described in detail here.

[0677] The non-transitory readable storage medium can be any available medium or data storage device that can be accessed by the processor, 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.

[0678] In some embodiments, a processor-readable storage medium is further provided, wherein the processor-readable storage medium stores a computer program, and the computer program is used to enable a processor to execute the method for transmitting a direct link positioning reference signal provided by the above-mentioned method embodiments.

[0679] Specifically, the processor-readable storage medium provided in the embodiment of the present application can implement all the method steps implemented in the above-mentioned method embodiments, and can achieve the same technical effects. The parts and beneficial effects that are the same as those in the method embodiments will not be described in detail herein.

[0680] In some embodiments, a computer-readable storage medium is further provided, wherein the computer-readable storage medium stores a computer program, and the computer program is used to enable a computer to execute the method for transmitting a direct link positioning reference signal provided in the above-mentioned method embodiments.

[0681] Specifically, the above-mentioned computer-readable storage medium provided in the embodiment of the present application can implement all the method steps implemented by the above-mentioned method embodiments, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

[0682] In some embodiments, a communication device is further provided, in which a computer program is stored, and the computer program is used to enable the communication device to execute the transmission method of the direct link positioning reference signal provided by the above-mentioned method embodiments.

[0683] Specifically, the above-mentioned communication device provided in the embodiment of the present application can implement all the method steps implemented by the above-mentioned method embodiments, and can achieve the same technical effects. The parts and beneficial effects that are the same as the method embodiments in this embodiment will not be described in detail here.

[0684] In some embodiments, a chip product is further provided, wherein a computer program is stored in the chip product, and the computer program is used to enable the chip product to execute the method for transmitting a direct link positioning reference signal provided by the above-mentioned method embodiments.

[0685] Specifically, the above-mentioned chip product provided in the embodiment of the present application can implement all the method steps implemented by the above-mentioned method embodiments, and can achieve the same technical effects. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

[0686] 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.

[0687] 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.

[0688] 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.

[0689] 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 A step that specifies a function in one or more boxes.

[0690] 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 transmitting a direct link positioning reference signal, characterized in that: Applied to the first terminal, comprising: Sending a destination address to the second terminal, where the destination address is used by the second terminal to receive a direct link positioning reference signal SL-PRS; Using the destination address, send the SL-PRS to the second terminal.

2. The method for transmitting a direct link positioning reference signal according to claim 1, characterized in that: The sending of the destination address to the second terminal also includes: Receiving direct link positioning indication information sent by the server; The destination address is generated according to the direct link positioning indication information.

3. The method for transmitting a direct link positioning reference signal according to claim 2, characterized in that: The through link location indication information includes at least one of the following: Direct link positioning method; Sending terminal indication information, where the sending terminal indication information is used to indicate that the first terminal is an SL-PRS sending terminal; Second terminal list; SL-PRS serial number; SL-PRS resource set information; SL-PRS sending period; Number of SL-PRS transmissions; SL-PRS communication type cast type.

4. The method for transmitting a direct link positioning reference signal according to claim 3, characterized in that: In a case where the through link location indication information includes the second terminal list, the method further includes: The second terminal is determined according to the second terminal list.

5. The method for transmitting a direct link positioning reference signal according to claim 1, characterized in that: The method further comprises at least one of the following: Determine how the through link is located; and / or Determine the SL-PRS communication type cast type.

6. The method for transmitting a direct link positioning reference signal according to claim 1, characterized in that: The sending of the destination address to the second terminal also includes: generating the destination address based on an address collision avoidance mechanism; or The destination address is selected from a set of available destination addresses.

7. The method for transmitting a direct link positioning reference signal according to any one of claims 1 to 6, characterized in that: The destination address is a layer 1 identifier or a layer 2 identifier.

8. The method for transmitting a direct link positioning reference signal according to claim 7, characterized in that: The sending of the destination address to the second terminal includes at least one of the following: Sending the destination address to the second terminal via a straight link positioning protocol SLPP message; Sending the destination address to the second terminal via a direct communication signal PC5-S message; Sending the destination address to the second terminal through a direct communication radio resource control PC5-RRC message; Sending the destination address to the second terminal via a media access control layer MAC control unit CE of a direct link SL; The destination address is sent to the second terminal through direct link control information SCI.

9. The method for transmitting a direct link positioning reference signal according to any one of claims 1 to 6, characterized in that: The method further comprises: Send a SL-PRS communication type cast type and / or SL-PRS configuration information to the second terminal, where the SL-PRS communication type cast type and / or the SL-PRS configuration information are used by the second terminal to receive the SL-PRS.

10. The method for transmitting a direct link positioning reference signal according to claim 9, characterized in that: The sending the SL-PRS communication type cast type and / or SL-PRS configuration information to the second terminal includes at least one of the following: Sending the SL-PRS communication type cast type and / or the SL-PRS configuration information to the second terminal through a SLPP message; Sending the SL-PRS communication type cast type and / or the SL-PRS configuration information to the second terminal through a PC5-S message; Sending the SL-PRS communication type cast type and / or the SL-PRS configuration information to the second terminal through a PC5-RRC message; Sending the SL-PRS communication type cast type and / or the SL-PRS configuration information to the second terminal through the SL MAC CE; The SL-PRS communication type cast type and / or the SL-PRS configuration information are sent to the second terminal via SCI.

11. The method for transmitting a direct link positioning reference signal according to claim 9, characterized in that: The SL-PRS configuration information includes at least one of the following: SL-PRS serial number; SL-PRS resource set information; SL-PRS scheduling type, where the SL-PRS scheduling type is used to indicate that the SL-PRS scheduling type is periodic scheduling, semi-persistent scheduling, or dynamic scheduling.

12. The method for transmitting a direct link positioning reference signal according to any one of claims 1 to 4 and 6, characterized in that: The first terminal is a target positioning terminal, and the second terminal is an anchor terminal, a reference terminal or a fixed position terminal; or The first terminal is an anchor terminal, a reference terminal or a fixed position terminal, and the second terminal is a target positioning terminal.

13. The method for transmitting a direct link positioning reference signal according to any one of claims 1 to 3, 5 and 6, characterized in that: The method further comprises: The second terminal is determined based on direct link SL discovery and / or SLPP capability interaction.

14. A method for transmitting a direct link positioning reference signal, characterized in that: Applied to the second terminal, including: receiving a destination address sent by the first terminal; The direct link positioning reference signal SL-PRS sent by the first terminal is received using the destination address.

15. The method for transmitting a direct link positioning reference signal according to claim 14, characterized in that: The destination address is a layer 1 identifier or a layer 2 identifier.

16. The method for transmitting a direct link positioning reference signal according to claim 15, characterized in that: The receiving of the destination address sent by the first terminal includes at least one of the following: Receiving the destination address sent by the first terminal through a straight link positioning protocol SLPP message; Receiving the destination address sent by the first terminal through a direct communication signal PC5-S message; Receiving the destination address sent by the first terminal through a direct communication radio resource control PC5-RRC message; Receiving the destination address sent by the first terminal through the media access control layer MAC control unit CE of the direct link SL; The destination address sent by the first terminal through direct link control information SCI is received.

17. The method for transmitting a direct link positioning reference signal according to any one of claims 14 to 16, characterized in that: The first terminal is a target positioning terminal, and the second terminal is an anchor terminal, a reference terminal or a fixed position terminal; or The first terminal is an anchor terminal, a reference terminal or a fixed position terminal, and the second terminal is a target positioning terminal.

18. The method for transmitting a direct link positioning reference signal according to any one of claims 14 to 16, characterized in that: The method further comprises: Receive the SL-PRS communication type cast type and / or SL-PRS configuration information sent by the first terminal, and the SL-PRS communication type cast type and / or the SL-PRS configuration information are used by the second terminal to receive the SL-PRS.

19. The method for transmitting a direct link positioning reference signal according to claim 18, characterized in that: The receiving the SL-PRS communication type cast type and / or SL-PRS configuration information sent by the first terminal includes at least one of the following: Receiving the SL-PRS communication type cast type and / or the SL-PRS configuration information sent by the first terminal through an SLPP message; Receiving the SL-PRS communication type cast type and / or the SL-PRS configuration information sent by the first terminal through a PC5-S message; Receiving the SL-PRS communication type cast type and / or the SL-PRS configuration information sent by the first terminal through a PC5-RRC message; Receiving the SL-PRS communication type cast type and / or the SL-PRS configuration information sent by the first terminal through the SL MAC CE; Receive the SL-PRS communication type cast type and / or the SL-PRS configuration information sent by the first terminal through SCI.

20. The method for transmitting a direct link positioning reference signal according to claim 18, characterized in that: The SL-PRS configuration information includes at least one of the following: SL-PRS serial number; SL-PRS resource set information; SL-PRS scheduling type, where the SL-PRS scheduling type is used to indicate that the SL-PRS scheduling type is periodic scheduling, semi-persistent scheduling, or dynamic scheduling.

21. The method for transmitting a direct link positioning reference signal according to any one of claims 14 to 16, characterized in that: The method further comprises: measuring the SL-PRS to obtain a measurement result; Send the measurement result to the first terminal or the server.

22. A method for transmitting a direct link positioning reference signal, characterized in that: Applicable to servers, including: Sending direct link positioning indication information to the first terminal, where the direct link positioning indication information is used to generate a destination address, and the destination address is used to transmit a direct link positioning reference signal SL-PRS.

23. A first terminal, characterized in that: Includes memory, transceiver and processor: The memory is used to store a computer program; the transceiver is used to send and receive data under the control of the processor; the processor is used to read the computer program in the memory and perform the following operations: Sending a destination address to the second terminal, where the destination address is used by the second terminal to receive a direct link positioning reference signal SL-PRS; Using the destination address, send the SL-PRS to the second terminal.

24. The first terminal according to claim 23, characterized in that: The sending of the destination address to the second terminal also includes: Receiving direct link positioning indication information sent by the server; The destination address is generated according to the direct link location indication information.

25. The first terminal according to claim 24, characterized in that: The through link location indication information includes at least one of the following: Direct link positioning method; Sending terminal indication information, where the sending terminal indication information is used to indicate that the first terminal is a SL-PRS sending terminal; Second terminal list; SL-PRS serial number; SL-PRS resource set information; SL-PRS sending period; Number of SL-PRS transmissions; SL-PRS communication type cast type.

26. The first terminal according to claim 25, characterized in that: In a case where the through link location indication information includes the second terminal list, the operation further includes: The second terminal is determined according to the second terminal list.

27. The first terminal according to claim 23, characterized in that: The operations also include at least one of the following: Determine how the through link is located; and / or Determine the SL-PRS communication type cast type.

28. The first terminal according to claim 23, characterized in that: The sending of the destination address to the second terminal also includes: generating the destination address based on an address collision avoidance mechanism; or The destination address is selected from a set of available destination addresses.

29. The first terminal according to any one of claims 23 to 28, characterized in that: The destination address is a layer 1 identifier or a layer 2 identifier.

30. The first terminal according to any one of claims 23 to 28, characterized in that: The operations also include: Send a SL-PRS communication type cast type and / or SL-PRS configuration information to the second terminal, where the SL-PRS communication type cast type and / or the SL-PRS configuration information are used by the second terminal to receive the SL-PRS.

31. The first terminal according to claim 30, characterized in that: The SL-PRS configuration information includes at least one of the following: SL-PRS serial number; SL-PRS resource set information; SL-PRS scheduling type, where the SL-PRS scheduling type is used to indicate that the SL-PRS scheduling type is periodic scheduling, semi-persistent scheduling, or dynamic scheduling.

32. The first terminal according to any one of claims 23 to 26 and 28, characterized in that: The first terminal is a target positioning terminal, and the second terminal is an anchor terminal, a reference terminal or a fixed position terminal; or The first terminal is an anchor terminal, a reference terminal or a fixed position terminal, and the second terminal is a target positioning terminal.

33. The first terminal according to any one of claims 23 to 25, 27 and 28, characterized in that: The operations also include: The second terminal is determined based on direct link SL discovery and / or SLPP capability interaction.

34. A second terminal, characterized in that: Includes memory, transceiver and processor: The memory is used to store a computer program; the transceiver is used to send and receive data under the control of the processor; the processor is used to read the computer program in the memory and perform the following operations: receiving a destination address sent by the first terminal; The direct link positioning reference signal SL-PRS sent by the first terminal is received using the destination address.

35. The second terminal according to claim 34, characterized in that: The destination address is a layer 1 identifier or a layer 2 identifier.

36. The second terminal according to any one of claims 34 to 35, characterized in that: The first terminal is a target positioning terminal, and the second terminal is an anchor terminal, a reference terminal or a fixed position terminal; or The first terminal is an anchor terminal, a reference terminal or a fixed position terminal, and the second terminal is a target positioning terminal.

37. The second terminal according to any one of claims 34 to 35, characterized in that: The operations also include: Receive the SL-PRS communication type cast type and / or SL-PRS configuration information sent by the first terminal, and the SL-PRS communication type cast type and / or the SL-PRS configuration information are used by the second terminal to receive the SL-PRS.

38. The second terminal according to claim 37, characterized in that: The SL-PRS configuration information includes at least one of the following: SL-PRS serial number; SL-PRS resource set information; SL-PRS scheduling type, where the SL-PRS scheduling type is used to indicate that the SL-PRS scheduling type is periodic scheduling, semi-persistent scheduling, or dynamic scheduling.

39. The second terminal according to any one of claims 34 to 35, characterized in that: The operations also include: measuring the SL-PRS to obtain a measurement result; Send the measurement result to the first terminal or the server.

40. A server, characterized in that: Includes memory, transceiver and processor: The memory is used to store a computer program; the transceiver is used to send and receive data under the control of the processor; the processor is used to read the computer program in the memory and perform the following operations: Sending direct link positioning indication information to the first terminal, where the direct link positioning indication information is used to generate a destination address, and the destination address is used to transmit a direct link positioning reference signal SL-PRS.

41. A transmission device for a direct link positioning reference signal, characterized in that: Applied to the first terminal, comprising: A destination address sending unit, configured to send a destination address to a second terminal, wherein the destination address is used for the second terminal to receive a direct link positioning reference signal SL-PRS; A reference signal sending unit is used to send SL-PRS to the second terminal using the destination address.

42. A transmission device for a direct link positioning reference signal, characterized in that: Applied to the second terminal, including: A destination address receiving unit, configured to receive a destination address sent by the first terminal; The reference signal receiving unit is configured to receive a direct link positioning reference signal SL-PRS sent by the first terminal using the destination address.

43. A transmission device for a direct link positioning reference signal, characterized in that: Applicable to servers, including: The indication information sending unit is used to send direct link positioning indication information to the first terminal, where the direct link positioning indication information is used to generate a destination address, and the destination address is used to transmit a direct link positioning reference signal SL-PRS.

44. 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 for transmitting a direct link positioning reference signal according to any one of claims 1 to 13.

45. 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 for transmitting a direct link positioning reference signal according to any one of claims 14 to 21.

46. ​​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 the processor to execute the method for transmitting a direct link positioning reference signal according to claim 22.

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