Information transmission method and apparatus

Abstract

The present disclosure relates to the technical field of communications, and provides an information transmission method and apparatus. The method of embodiments of the present disclosure comprises: a terminal acquires system information sent by a base station, wherein the system information comprises sidelink (SL) positioning indication information, and the SL positioning indication information is used for indicating whether a network supports SL positioning.

Description

Information transmission method and device

[0001] This disclosure claims priority to the Chinese patent application filed with the China Patent Office on July 26, 2023, with application number 202310924680.5 and application name “Information Transmission Method and Device,” the entire contents of which are incorporated by reference into this disclosure. Technical Field

[0002] The present disclosure relates to the field of communication technology, and in particular to an information transmission method and device. Background Art

[0003] In the related technology, SideLink (SL) positioning introduces two types of operations: terminal-only (UE-only) and network-based. The UE-only operation is aimed at the scenario where all target terminals (target UE) and anchor terminals (anchor UE) participating in SL positioning are offline, or the target UE and anchor UE are online, but the network does not support SL positioning. For the case where the target UE and anchor UE are online, but the network does not support SL positioning, the UE needs to initiate an SL positioning request to the network, which is rejected by the network. In this way, the UE needs to first enter the connected state, establish a Radio Resource Control (RRC) and Non-Access Stratum (NAS) connection, and then interact with the core network equipment to learn that the network does not support SL positioning. This process results in redundant signaling overhead and delay.

[0004] Summary of the Invention

[0005] The purpose of the present disclosure is to provide an information transmission method and apparatus to solve the problem in the related art that the method in which a terminal obtains whether a network supports SL positioning causes redundant signaling overhead and delay.

[0006] In order to achieve the above objectives, the present disclosure provides an information transmission method, comprising:

[0007] The terminal obtains system information sent by the base station, where the system information includes direct link SL positioning indication information, and the SL positioning indication information is used to indicate whether the network supports SL positioning.

[0008] Optionally, the terminal determines the SL positioning mode according to the SL positioning indication information.

[0009] Optionally, the system information includes a system information block or a positioning system information block.

[0010] Optionally, the SL positioning indication information is determined based on a public land mobile network PLMN, or the SL positioning indication information is not determined based on a PLMN.

[0011] Optionally, the method of the embodiment of the present disclosure further includes:

[0012] The terminal determines the valid area of ​​the system information according to the area range indication field in the system information, where the area range indication field is used to indicate whether the SL positioning indication information is area valid information.

[0013] Optionally, the terminal determining, according to an area range indication field in the system information, a valid area of ​​the system information, includes:

[0014] In a case where the area range indication field indicates that the SL positioning indication information is area-valid information, determining an area corresponding to the system information area identifier in the system information as a valid area of ​​the SL positioning indication information;

[0015] When the area range indication field indicates that the SL positioning indication information is not area valid information, it is determined that the cell corresponding to the terminal is the valid area of ​​the SL positioning indication information.

[0016] Optionally, the terminal acquiring system information sent by the base station includes:

[0017] The terminal obtains the system information based on the periodic broadcast of the base station;

[0018] Alternatively, the terminal sends a first request message to the base station, where the first request message is used to request acquisition of system information; and the terminal receives a first response message sent by the base station, where the first response message includes the system information.

[0019] Optionally, the terminal determines, according to the SL positioning indication, a SL positioning mode, including:

[0020] When the SL positioning indication information indicates that the network does not support SL positioning, determining that the SL positioning mode is a first SL positioning mode, where the first SL positioning mode is a positioning mode in which only the terminal participates;

[0021] When the SL positioning indication information indicates that the network supports SL positioning, the SL positioning mode is determined to be a second SL positioning mode, and the second SL positioning mode is a network-based positioning mode.

[0022] The present disclosure also provides an information transmission method, including:

[0023] The base station sends system information, where the system information includes direct link SL positioning indication information, where the SL positioning indication information is used to indicate whether the network supports SL positioning.

[0024] Optionally, the method further includes:

[0025] The base station obtains the SL positioning indication information from the target device, and the target device includes an access and mobility management function AMF and / or a positioning management function LMF.

[0026] Optionally, the base station obtains the SL positioning indication information from the target device, including:

[0027] The base station sends a second request message to the target device, where the second request message is used to request obtaining the SL positioning indication information;

[0028] The base station receives a second response message sent by the target device, where the second response message includes the SL positioning indication information.

[0029] Optionally, the base station obtains the SL positioning indication information from the target device, including:

[0030] When the base station establishes a connection with the target device, the base station obtains the SL positioning indication information from the target device;

[0031] Alternatively, when the SL positioning supported by the network changes, the base station obtains the SL positioning indication information from the target device.

[0032] The embodiment of the present disclosure further provides an information transmission device, including a memory, a transceiver, and a processor;

[0033] A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations:

[0034] Obtain system information sent by the base station, where the system information includes direct link SL positioning indication information, and the SL positioning indication information is used to indicate whether the network supports SL positioning.

[0035] Optionally, the processor further implements the following steps:

[0036] Determine the SL positioning mode according to the SL positioning indication information.

[0037] Optionally, the system information includes a system information block or a positioning system information block.

[0038] Optionally, the SL positioning indication information is determined based on a public land mobile network PLMN, or the SL positioning indication information is not determined based on a PLMN.

[0039] Optionally, the processor further implements the following steps:

[0040] The valid area of ​​the system information is determined according to the area range indication field in the system information, and the area range indication field is used to indicate whether the SL positioning indication information is area valid information.

[0041] Optionally, the processor further implements the following steps:

[0042] In a case where the area range indication field indicates that the SL positioning indication information is area-valid information, determining an area corresponding to the system information area identifier in the system information as a valid area of ​​the SL positioning indication information;

[0043] When the area range indication field indicates that the SL positioning indication information is not area valid information, it is determined that the cell corresponding to the terminal is the valid area of ​​the SL positioning indication information.

[0044] Optionally, the processor further implements the following steps:

[0045] Acquiring the system information based on periodic broadcast of a base station;

[0046] Alternatively, a first request message is sent to a base station, where the first request message is used to request acquisition of system information; and a first response message sent by the base station is received, where the first response message includes the system information.

[0047] Optionally, the processor further implements the following steps:

[0048] When the SL positioning indication information indicates that the network does not support SL positioning, determining that the SL positioning mode is a first SL positioning mode, where the first SL positioning mode is a positioning mode in which only the terminal participates;

[0049] When the SL positioning indication information indicates that the network supports SL positioning, the SL positioning mode is determined to be a second SL positioning mode, and the second SL positioning mode is a network-based positioning mode.

[0050] The embodiment of the present disclosure further provides an information transmission device, including a memory, a transceiver, and a processor;

[0051] A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations:

[0052] Sending system information, where the system information includes direct link SL positioning indication information, where the SL positioning indication information is used to indicate whether the network supports SL positioning.

[0053] Optionally, the processor further implements the following steps:

[0054] The SL positioning indication information is obtained from the target device, where the target device includes an access and mobility management function AMF and / or a positioning management function LMF.

[0055] Optionally, the processor further implements the following steps:

[0056] Sending a second request message to the target device, where the second request message is used to request obtaining the SL positioning indication information;

[0057] Receive a second response message sent by the target device, where the second response message includes the SL positioning indication information.

[0058] Optionally, the processor further implements the following steps:

[0059] When the base station establishes a connection with the target device, obtaining the SL positioning indication information from the target device;

[0060] Alternatively, when the SL positioning supported by the network changes, the SL positioning indication information is obtained from the target device.

[0061] The present disclosure also provides an information transmission device, including:

[0062] The first acquisition unit is used to acquire system information sent by the base station, where the system information includes direct link SL positioning indication information, and the SL positioning indication information is used to indicate whether the network supports SL positioning.

[0063] The present disclosure also provides an information transmission device, including:

[0064] The first sending unit is used to send system information, where the system information includes direct link SL positioning indication information, and the SL positioning indication information is used to indicate whether the network supports SL positioning.

[0065] An embodiment of the present disclosure 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 steps of the information transmission method described above.

[0066] The above technical solution disclosed in the present invention has at least the following beneficial effects:

[0067] In an embodiment of the present disclosure, the terminal obtains system information sent by the base station, and the system information includes direct link SL positioning indication information, and the SL positioning indication information is used to indicate whether the network supports SL positioning, so that the terminal can know whether the network supports SL positioning without dedicated signaling interaction, avoiding the signaling overhead and delay caused by the terminal and the network having to use dedicated signaling to know whether the network supports SL positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0068] FIG1 is a structural diagram of a network system to which the embodiments of the present disclosure may be applied;

[0069] FIG2 shows a schematic diagram of a flow chart of an information transmission method according to an embodiment of the present disclosure;

[0070] FIG3 shows one interactive schematic diagram of the information transmission method according to an embodiment of the present disclosure;

[0071] FIG4 shows a second interactive diagram of the information transmission method according to an embodiment of the present disclosure;

[0072] FIG5 shows a third interactive diagram of the information transmission method according to an embodiment of the present disclosure;

[0073] FIG6 shows a second flow chart of the information transmission method according to an embodiment of the present disclosure;

[0074] FIG7 shows one structural block diagram of the information transmission device according to an embodiment of the present disclosure;

[0075] FIG8 shows a second structural block diagram of the information transmission device according to an embodiment of the present disclosure;

[0076] FIG9 shows one of the module schematic diagrams of the information transmission device according to an embodiment of the present disclosure;

[0077] FIG. 10 shows a second schematic diagram of modules of the information transmission device according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0078] The following will clearly and completely describe the technical solutions in the embodiments of the present disclosure in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present disclosure without making any creative efforts shall fall within the scope of protection of the present disclosure.

[0079] The terms "first," "second," and the like in the specification and claims of the present disclosure are used to distinguish similar objects and are not necessarily used to describe a particular order or sequential sequence. It should be understood that the terms used in this manner are interchangeable where appropriate so that the embodiments of the present disclosure described herein may be implemented in a sequence other than those illustrated or described herein. In addition, the terms "including" and "having," and any variations thereof, are intended to cover non-exclusive inclusions, e.g., a process, method, system, product, or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such processes, methods, products, or apparatus.

[0080] In the embodiments of the present disclosure, the term "and / or" describes the relationship between associated objects, indicating that three possible relationships exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship. In the embodiments of the present disclosure, the term "plurality" refers to two or more, and other quantifiers are similar.

[0081] In the embodiments of the present disclosure, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present disclosure should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0082] FIG1 shows a block diagram of a wireless communication system applicable to embodiments of the present disclosure. The wireless communication system includes a terminal device 11 and a network-side device (or network device) 12. The terminal device 11 may also be referred to as a terminal or a user equipment (UE). It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present disclosure. The network-side device 12 may be a base station or a core network. It should be noted that the embodiments of the present disclosure only take a base station in a New Radio (NR) system as an example, but the specific type of the base station is not limited.

[0083] As shown in FIG2 , an embodiment of the present disclosure provides an information transmission method, including:

[0084] Step 201: The terminal obtains system information sent by the base station, where the system information includes direct link SL positioning indication information, and the SL positioning indication information is used to indicate whether the network supports SL positioning.

[0085] Optionally, the SL positioning indication information is used to indicate whether the fifth-generation mobile communication (5th-Generation, 5G) core network supports SL positioning, or to indicate whether the location management function (Location Management Function, LMF) supports SL positioning, or to indicate whether the current regional network supports SL positioning.

[0086] In the disclosed embodiment, adjacent terminals (such as the two terminal devices in Figure 1) can transmit data within a short range through a direct communication link (or a straight-through link, also called a Sidelink). This method is called direct communication, and the wireless interface corresponding to the Sidelink link is called a direct communication interface, also called a Sidelink interface or a proximity communication port 5 (Proximity Communication, PC5) interface.

[0087] In an embodiment of the present disclosure, a terminal obtains system information sent by a base station, the system information including direct link (SL) positioning indication information indicating whether the network supports SL positioning. The terminal then determines the SL positioning mode based on the SL positioning indication information. This solution allows the terminal to determine whether the network supports SL positioning without interacting with dedicated signaling, thus avoiding the signaling overhead and latency incurred by requiring dedicated signaling between the terminal and the network to determine whether the network supports SL positioning.

[0088] Optionally, the method of the embodiment of the present disclosure further includes:

[0089] The terminal determines the SL positioning mode according to the SL positioning indication information.

[0090] The above-mentioned SL positioning method includes a first SL positioning method or a second SL positioning method. The first SL positioning method is a positioning method in which only the terminal participates, and the second SL positioning method is a network-based positioning method.

[0091] Optionally, the system information includes a system information block (System Information Block, SIB) or a positioning system information block (Positioning SIB, posSIB).

[0092] The above positioning system information block can be described as a system information block used for positioning.

[0093] Optionally, the SL positioning indication information is determined based on a public land mobile network (PLMN), or the SL positioning indication information is not determined based on a PLMN.

[0094] Optionally, the method of the embodiment of the present disclosure further includes:

[0095] The terminal determines the valid area of ​​the system information according to the area range indication field in the system information, where the area range indication field is used to indicate whether the SL positioning indication information is area valid information.

[0096] Optionally, the terminal determining, according to an area range indication field in the system information, a valid area of ​​the system information, includes:

[0097] In a case where the area range indication field indicates that the SL positioning indication information is area-valid information, determining an area corresponding to the system information area identifier in the system information as a valid area of ​​the SL positioning indication information;

[0098] When the area range indication field indicates that the SL positioning indication information is not area valid information, it is determined that the cell corresponding to the terminal is the valid area of ​​the SL positioning indication information.

[0099] In an embodiment of the present disclosure, when the area range indication field indicates that the SL positioning indication information is area valid information, the terminal does not need to re-acquire the system information when moving between cells corresponding to the same system information area identifier (systemInformationAreaID); when the area range indication field indicates that the SL positioning indication information is not area valid information, the terminal needs to re-acquire the system information after switching cells.

[0100] Optionally, the terminal acquiring system information sent by the base station includes:

[0101] The terminal obtains the system information based on the periodic broadcast of the base station;

[0102] Alternatively, the terminal sends a first request message to the base station, where the first request message is used to request acquisition of system information; and the terminal receives a first response message sent by the base station, where the first response message includes the system information.

[0103] Optionally, the terminal determines, according to the SL positioning indication, a SL positioning mode, including:

[0104] When the SL positioning indication information indicates that the network does not support SL positioning, determining that the SL positioning mode is a first SL positioning mode, where the first SL positioning mode is a positioning mode in which only the terminal participates;

[0105] When the SL positioning indication information indicates that the network supports SL positioning, the SL positioning mode is determined to be a second SL positioning mode, and the second SL positioning mode is a network-based positioning mode.

[0106] The information transmission method disclosed herein is described in detail below with reference to embodiments.

[0107] Example 1: The current regional network does not support SL positioning, and the target UE and the anchor UE in the network perform a UE-only positioning operation. As shown in Figure 3, the process includes:

[0108] Step 1: The target UE receives a SL positioning service request, which can come from the network, an internal application of the target UE, or a third-party UE.

[0109] Step 2: The target UE obtains the system information (SIB or posSIB) sent by the base station.

[0110] Step 3: The target UE reads the SIB or posSIB and finds that its serving PLMN does not support SL positioning, thereby determining to adopt UE-only operation.

[0111] Step 4: The target UE initiates a discovery process to discover the surrounding anchor UEs. If the target UE cannot serve as a server UE, it needs to discover a server UE.

[0112] Step 5: The target UE selects the anchor UE(s) for SL positioning based on the anchor UE selection criteria. If the target UE cannot serve as a server UE, the target UE selects the server UE for SL positioning based on the server UE selection criteria.

[0113] Step 6: The target UE, anchor UEs and server UE perform a UE-only SL positioning process and calculate the position of the target UE.

[0114] Step 7: The target UE sends the location information to the node that requested the SL positioning service in step 1.

[0115] Example 2: The current regional network supports SL positioning. The target UE and anchor UE in the network perform a network-based positioning method. As shown in FIG4 , the process includes:

[0116] Step 1: The target UE receives a SL positioning service request, which can come from the network, an internal application of the target UE, or a third-party UE.

[0117] Step 2: The target UE obtains the system information (SIB or posSIB) sent by the base station.

[0118] Step 3: The target UE reads the SIB or posSIB to determine whether its serving PLMN supports SL positioning, thereby determining to adopt Network-based operation.

[0119] Step 4: The target UE initiates the discovery process to discover the surrounding candidate anchor UEs. If the anchor UE chooses to be performed by the LMF, the target UE sends the candidate anchor UEs information (such as the positioning methods supported by each candidate anchor UE, location information, whether it is in the network, the PLMN it serves, whether it is mobile, whether the location is fixed, the measured Side Link Discovery Reference Signal Receiving Power (SD-RSRP), Line of Sight (LOS) / Non-Line of Sight (NLOS), etc.) to the LMF.

[0120] Step 5: The target UE or LMF selects the anchor UE(s) for SL positioning based on the anchor UE selection criteria.

[0121] Step 6: The target UE, anchor UEs and LMF perform a Network-based SL positioning process and calculate the position of the target UE.

[0122] Step 7: The target UE sends the location information to the node that requested the SL positioning service in step 1.

[0123] Example 3: The process of determining whether the network supports SL positioning through interaction between the base station and the access and mobility management function (AMF), as shown in FIG5 , includes:

[0124] Step 1: The gNB sends a SL positioning support request (i.e., a second request message) to the AMF, which may include the specific PLMNs requested to support SL positioning.

[0125] Step 2: The AMF responds to the request in step 1 and sends to the gNB whether the PLMN requested in step 1 supports SL positioning.

[0126] Optionally, whether the PLMN requested in step 1 supports SL positioning is sent to the gNB through a second response message. Specifically, the SL positioning support information (i.e., SL positioning indication information) is sent to the gNB.

[0127] The AMF may also send step 2 directly to the gNB without going through step 1, and send the information to the gNB as to whether the PLMN supports SL positioning.

[0128] Through the above solution, the terminal can know whether the network supports SL positioning without interacting through dedicated signaling, and then determine the SL positioning method to be adopted, avoiding the signaling overhead and delay caused by the terminal and the network having to use dedicated signaling to know whether the network supports SL positioning.

[0129] As shown in FIG6 , the embodiment of the present disclosure further provides an information transmission method, including:

[0130] Step 601: The base station sends system information, where the system information includes direct link SL positioning indication information, and the SL positioning indication information is used to indicate whether the network supports SL positioning.

[0131] Optionally, the SL positioning indication information is used to indicate whether the 5G core network supports SL positioning, or to indicate whether the location management function (LMF) supports SL positioning, or to indicate whether the current regional network supports SL positioning.

[0132] In an embodiment of the present disclosure, the base station sends system information, which includes direct link SL positioning indication information. The SL positioning indication information is used to indicate whether the network supports SL positioning, so that the terminal can know whether the network supports SL positioning without dedicated signaling interaction, and then determine the SL positioning method to be adopted, avoiding the signaling overhead and delay caused by the terminal and the network having to use dedicated signaling to know whether the network supports SL positioning.

[0133] Optionally, the method further includes:

[0134] The base station obtains the SL positioning indication information from the target device, and the target device includes an access and mobility management function AMF and / or a positioning management function LMF.

[0135] Optionally, the base station obtains the SL positioning indication information from the target device, including:

[0136] The base station sends a second request message to the target device, where the second request message is used to request obtaining the SL positioning indication information;

[0137] The base station receives a second response message sent by the target device, where the second response message includes the SL positioning indication information.

[0138] Optionally, the base station obtains the SL positioning indication information from the target device, including:

[0139] When the base station establishes a connection with the target device, the base station obtains the SL positioning indication information from the target device;

[0140] Alternatively, when the SL positioning supported by the network changes, the base station obtains the SL positioning indication information from the target device.

[0141] According to the above description, in the embodiment of the present disclosure, the base station can send a request to the target device, and the target device responds to the base station whether the network supports SL positioning, or the target device actively sends information to the base station whether the network supports SL positioning when initially establishing a connection with the base station and / or when the network's support for the SL positioning function changes.

[0142] In an embodiment of the present disclosure, the base station sends system information, which includes direct link SL positioning indication information. The SL positioning indication information is used to indicate whether the network supports SL positioning, so that the terminal can know whether the network supports SL positioning without interacting through dedicated signaling, avoiding the signaling overhead and delay caused by the terminal and the network having to use dedicated signaling to know whether the network supports SL positioning.

[0143] As shown in FIG7 , an embodiment of the present disclosure provides an information transmission device, which is applied to a terminal and includes a memory 720 , a transceiver 700 , and a processor 710 ;

[0144] The memory 720 is used to store computer programs; the transceiver 700 is used to send and receive data under the control of the processor 710; the processor 710 is used to read the computer program in the memory 720 and perform the following operations:

[0145] Obtain system information sent by the base station, where the system information includes direct link SL positioning indication information, and the SL positioning indication information is used to indicate whether the network supports SL positioning.

[0146] In FIG7 , the bus architecture may include any number of interconnected buses and bridges, specifically various circuits connected together by one or more processors represented by processor 710 and memory represented by memory 720. The bus architecture 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, including a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, such as a wireless channel, a wired channel, an optical cable, and the like. For different user devices, the user interface 730 may also be an interface capable of connecting external or internal devices as required, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

[0147] 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.

[0148] Optionally, the processor 710 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), and the processor may also adopt a multi-core architecture.

[0149] The processor calls the computer program stored in the memory to execute any of the methods provided by the embodiments of the present disclosure according to the obtained executable instructions. The processor and the memory can also be arranged physically separately.

[0150] Optionally, the processor further implements the following steps:

[0151] Determine the SL positioning mode according to the SL positioning indication information.

[0152] Optionally, the system information includes a system information block or a positioning system information block.

[0153] Optionally, the SL positioning indication information is determined based on a public land mobile network PLMN, or the SL positioning indication information is not determined based on a PLMN.

[0154] Optionally, the processor further implements the following steps:

[0155] The valid area of ​​the system information is determined according to the area range indication field in the system information, and the area range indication field is used to indicate whether the SL positioning indication information is area valid information.

[0156] Optionally, the processor further implements the following steps:

[0157] In a case where the area range indication field indicates that the SL positioning indication information is area-valid information, determining an area corresponding to the system information area identifier in the system information as a valid area of ​​the SL positioning indication information;

[0158] When the area range indication field indicates that the SL positioning indication information is not area valid information, it is determined that the cell corresponding to the terminal is the valid area of ​​the SL positioning indication information.

[0159] Optionally, the processor further implements the following steps:

[0160] Acquiring the system information based on periodic broadcast of a base station;

[0161] Alternatively, a first request message is sent to a base station, where the first request message is used to request acquisition of system information; and a first response message sent by the base station is received, where the first response message includes the system information.

[0162] Optionally, the processor further implements the following steps:

[0163] When the SL positioning indication information indicates that the network does not support SL positioning, determining that the SL positioning mode is a first SL positioning mode, where the first SL positioning mode is a positioning mode in which only the terminal participates;

[0164] When the SL positioning indication information indicates that the network supports SL positioning, the SL positioning mode is determined to be a second SL positioning mode, and the second SL positioning mode is a network-based positioning mode.

[0165] It should be noted here that the above-mentioned device provided in the embodiment of the present disclosure can implement all the method steps implemented in the above-mentioned information transmission method embodiment applied to the 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.

[0166] As shown in FIG8 , an embodiment of the present disclosure further provides an information transmission device, which is applied to a base station. The device includes a memory 820 , a transceiver 800 , and a processor 810 ;

[0167] The memory 820 is used to store computer programs; the transceiver 800 is used to send and receive data under the control of the processor; the processor 810 is used to read the computer program in the memory and perform the following operations:

[0168] Sending system information, where the system information includes direct link SL positioning indication information, where the SL positioning indication information is used to indicate whether the network supports SL positioning.

[0169] In FIG8 , the bus architecture may include any number of interconnected buses and bridges, specifically various circuits linked together by one or more processors represented by processor 810 and memory represented by memory 820. 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 provides an interface. The transceiver 800 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, such as a wireless channel, a wired channel, an optical cable, and the like. The processor 810 is responsible for managing the bus architecture and general processing, and the memory 820 may store data used by the processor 810 when performing operations.

[0170] The processor 810 may be a CPU, an ASIC, an FPGA, or a CPLD, and the processor may also adopt a multi-core architecture.

[0171] Optionally, the processor further implements the following steps:

[0172] The SL positioning indication information is obtained from the target device, where the target device includes an access and mobility management function AMF and / or a positioning management function LMF.

[0173] Optionally, the processor further implements the following steps:

[0174] Sending a second request message to the target device, where the second request message is used to request obtaining the SL positioning indication information;

[0175] Receive a second response message sent by the target device, where the second response message includes the SL positioning indication information.

[0176] Optionally, the processor further implements the following steps:

[0177] When the base station establishes a connection with the target device, obtaining the SL positioning indication information from the target device;

[0178] Alternatively, when the SL positioning supported by the network changes, the SL positioning indication information is obtained from the target device.

[0179] It should be noted here that the above-mentioned device provided in the embodiment of the present disclosure can implement all the method steps implemented in the above-mentioned information transmission method embodiment applied to the base station, 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.

[0180] As shown in FIG9 , an embodiment of the present disclosure further provides an information transmission device, which is applied to a terminal and includes:

[0181] The first acquisition unit 901 is configured to acquire system information sent by a base station, where the system information includes direct link SL positioning indication information, and the SL positioning indication information is used to indicate whether the network supports SL positioning.

[0182] Optionally, the apparatus according to the embodiment of the present disclosure further includes:

[0183] The first determining unit is used to determine the SL positioning mode according to the SL positioning indication information.

[0184] Optionally, the system information includes a system information block or a positioning system information block.

[0185] Optionally, the SL positioning indication information is determined based on a public land mobile network PLMN, or the SL positioning indication information is not determined based on a PLMN.

[0186] Optionally, the apparatus according to the embodiment of the present disclosure further includes:

[0187] The second determining unit is used to determine the valid area of ​​the system information according to the area range indication field in the system information, and the area range indication field is used to indicate whether the SL positioning indication information is area valid information.

[0188] Optionally, the second determining unit includes:

[0189] a first determining subunit, configured to, when the area range indication field indicates that the SL positioning indication information is area valid information, determine an area corresponding to the system information area identifier in the system information as a valid area for the SL positioning indication information;

[0190] The second determining subunit is configured to determine that the cell corresponding to the terminal is a valid area of ​​the SL positioning indication information when the area range indication field indicates that the SL positioning indication information is not area valid information.

[0191] Optionally, the first acquiring unit is configured to acquire the system information based on periodic broadcasting of a base station;

[0192] Alternatively, it is used to send a first request message to a base station, where the first request message is used to request acquisition of system information; and receive a first response message sent by the base station, where the first response message includes the system information.

[0193] Optionally, the first determining unit is configured to:

[0194] When the SL positioning indication information indicates that the network does not support SL positioning, determining that the SL positioning mode is a first SL positioning mode, where the first SL positioning mode is a positioning mode in which only the terminal participates;

[0195] When the SL positioning indication information indicates that the network supports SL positioning, the SL positioning mode is determined to be a second SL positioning mode, and the second SL positioning mode is a network-based positioning mode.

[0196] It should be noted here that the above-mentioned device provided in the embodiment of the present disclosure can implement all the method steps implemented in the above-mentioned information transmission method embodiment applied to the 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.

[0197] As shown in FIG10 , an embodiment of the present disclosure further provides an information transmission device, which is applied to a base station. The device includes:

[0198] The first sending unit 1001 is configured to send system information, where the system information includes direct link SL positioning indication information, and the SL positioning indication information is used to indicate whether the network supports SL positioning.

[0199] Optionally, the apparatus according to the embodiment of the present disclosure further includes:

[0200] The second acquisition unit is used to obtain the SL positioning indication information from the target device, and the target device includes an access and mobility management function AMF and / or a positioning management function LMF.

[0201] Optionally, the second acquiring unit includes:

[0202] a sending subunit, configured to send a second request message to the target device, where the second request message is used to request obtaining the SL positioning indication information;

[0203] The receiving subunit is configured to receive a second response message sent by the target device, where the second response message includes the SL positioning indication information.

[0204] Optionally, the second acquiring unit is configured to:

[0205] When the base station establishes a connection with the target device, obtaining the SL positioning indication information from the target device;

[0206] Alternatively, when the SL positioning supported by the network changes, the SL positioning indication information is obtained from the target device.

[0207] It should be noted here that the above-mentioned device provided in the embodiment of the present disclosure can implement all the method steps implemented in the above-mentioned information transmission method embodiment applied to the base station, 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.

[0208] It should be noted that the division of units in the embodiments of the present disclosure is schematic and is merely a logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional units in the various embodiments of the present disclosure may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0209] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present disclosure is essentially or the part that contributes to the relevant technology or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the method described in each embodiment of the present disclosure. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0210] In some embodiments of the present disclosure, a processor-readable storage medium is also provided, which stores program instructions, and the program instructions are used to enable the processor to execute all the steps implemented by the method embodiment for implementing the above-mentioned terminal execution or all the steps implemented by the method embodiment for implementing the base station, 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.

[0211] The terminal device involved in the embodiments of the present disclosure may be a device that provides voice and / or data connectivity to a user, a handheld device with wireless connection function, or other processing devices connected to a wireless modem. In different systems, the name of the terminal device may also be different. For example, in a 5G system, the terminal device may be called User Equipment (UE). A wireless terminal device can communicate with one or more core networks (CN) via a radio access network (RAN). The wireless terminal device may be a mobile terminal device, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal device. For example, it may be a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device that exchanges language and / or data with a radio access network. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), and other devices. The wireless terminal device may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, a remote terminal device, an access terminal device, a user terminal device, a user agent, or a user device, but is not limited in the embodiments of the present disclosure.

[0212] The network device (or network-side device) involved in the embodiments of the present disclosure may be a base station, which may include multiple cells providing services to terminals. Depending on the specific application scenario, the base station may also be called an access point, or may be a device in an access network that communicates with a wireless terminal device through one or more sectors on an air interface, or may be called another name. The network device may be used to interchange received air frames with Internet Protocol (IP) packets, acting as a router between the wireless terminal device and the rest of the access network, wherein the rest of the access network may include an Internet Protocol (IP) communication network. The network device may also coordinate attribute management of the air interface. For example, the network device involved in the embodiments of the present disclosure may be a base transceiver station (BTS) in the Global System for Mobile communications (GSM) or code division multiple access (CDMA), a network device (NodeB) in wide-band code division multiple access (WCDMA), an evolutionary Node B (eNB or e-NodeB) in the Long Term Evolution (LTE) system, a 5G base station (gNB) in the 5G network architecture (next generation system), a home evolved Node B (HeNB), a relay node, a femto, a pico, etc., and is not limited in the embodiments of the present disclosure. In some network structures, the network device may include a centralized unit (CU) node and a distributed unit (DU) node, and the centralized unit and the distributed unit may also be geographically separated.

[0213] Network devices and terminal devices can each use one or more antennas for Multiple Input Multiple Output (MIMO) transmission. MIMO transmission can be single-user MIMO (SU-MIMO) or multi-user MIMO (MU-MIMO). Depending on the configuration and number of antenna combinations, MIMO transmission can be two-dimensional MIMO (2D-MIMO), three-dimensional MIMO (3D-MIMO), full-dimensional MIMO (FD-MIMO), or massive MIMO. It can also use diversity transmission, precoding, or beamforming.

[0214] Those skilled in the art will appreciate that the embodiments of the present disclosure may be provided as methods, systems, or computer program products. Therefore, the present disclosure may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Furthermore, the present disclosure may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage and optical storage, etc.) containing computer-usable program code.

[0215] The present disclosure is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present disclosure. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer-executable instructions. These computer-executable instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0216] These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the processor-readable memory produce a product including an instruction device that implements the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0217] These processor-executable instructions may also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, whereby the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0218] It should be noted that it should be understood that the division of the above modules is merely a division of logical functions. In actual implementation, they can be fully or partially integrated into one physical entity, or they can be physically separated. Moreover, these modules can all be implemented in the form of software called by a processing element; or they can all be implemented in the form of hardware; or some modules can be implemented in the form of software called by a processing element, and some modules can be implemented in the form of hardware. For example, the determination module can be a separately established processing element, or it can be integrated into a chip of the above-mentioned device. In addition, it can also be stored in the memory of the above-mentioned device in the form of program code, and called by a processing element of the above-mentioned device to perform the functions of the above-mentioned determination module. The implementation of other modules is similar. In addition, these modules can all or partly be integrated together, or they can be implemented independently. The processing element described here can be an integrated circuit with signal processing capabilities. In the implementation process, each step of the above method or each of the above modules can be completed by the hardware integrated logic circuit in the processor element or by instructions in the form of software.

[0219] For example, each module, unit, sub-unit or sub-module may be one or more integrated circuits configured to implement the above method, such as one or more application-specific integrated circuits (ASICs), one or more digital signal processors (DSPs), or one or more field programmable gate arrays (FPGAs). For another example, when a module is implemented by scheduling program code through a processing element, the processing element may be a general-purpose processor, such as a central processing unit (CPU) or other processor that can call program code. For another example, these modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).

[0220] The terms "first," "second," and the like in the specification and claims of the present disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present disclosure described herein may be implemented in a sequence other than that illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements that are not explicitly listed or that are inherent to such process, method, product, or device. Furthermore, the use of "and / or" in the specification and claims to indicate at least one of the connected objects, for example, A and / or B and / or C, includes seven situations: A alone, B alone, C alone, both A and B present, both B and C present, both A and C present, and all A, B, and C present. Similarly, the use of "at least one of A and B" in the specification and claims should be understood to mean "A alone, B alone, or both A and B present."

[0221] Obviously, those skilled in the art may make various changes and modifications to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure is intended to include these modifications and variations.

Claims

1. An information transmission method, comprising: The terminal obtains system information sent by the base station, where the system information includes direct link SL positioning indication information, and the SL positioning indication information is used to indicate whether the network supports SL positioning.

2. The method according to claim 1, further comprising: The terminal determines the SL positioning mode according to the SL positioning indication information.

3. The method according to claim 1, wherein: The system information includes a system information block or a positioning system information block.

4. The method according to claim 1, wherein: The SL positioning indication information is determined based on a public land mobile network PLMN, or the SL positioning indication information is not determined based on a PLMN.

5. The method according to claim 1, further comprising: The terminal determines the valid area of ​​the system information according to the area range indication field in the system information, and the area range indication field is used to indicate whether the SL positioning indication information is area valid information.

6. The method according to claim 5, wherein: The terminal determines, according to the area range indication field in the system information, a valid area of ​​the system information, including: In a case where the area range indication field indicates that the SL positioning indication information is area valid information, determining an area corresponding to the system information area identifier in the system information as a valid area of ​​the SL positioning indication information; When the area range indication field indicates that the SL positioning indication information is not area valid information, it is determined that the cell corresponding to the terminal is the valid area of ​​the SL positioning indication information.

7. The method according to claim 1, wherein: The terminal obtains system information sent by the base station, including: The terminal acquires the system information based on periodic broadcast of the base station; Alternatively, the terminal sends a first request message to the base station, where the first request message is used to request to obtain the system information; the terminal receives a first response message sent by the base station, where the first response message includes the system information.

8. The method according to claim 1, wherein: The terminal determines, according to the SL positioning indication, a SL positioning mode, including: When the SL positioning indication information indicates that the network does not support SL positioning, determining that the SL positioning mode is a first SL positioning mode, where the first SL positioning mode is a positioning mode in which only the terminal participates; When the SL positioning indication information indicates that the network supports SL positioning, the SL positioning mode is determined to be a second SL positioning mode, and the second SL positioning mode is a network-based positioning mode.

9. An information transmission method, comprising: The base station sends system information, where the system information includes direct link SL positioning indication information, where the SL positioning indication information is used to indicate whether the network supports SL positioning.

10. The method according to claim 9, further comprising: The base station obtains the SL positioning indication information from a target device, where the target device includes an access and mobility management function AMF and / or a positioning management function LMF.

11. The method according to claim 10, wherein: The base station obtains the SL positioning indication information from the target device, including: The base station sends a second request message to the target device, where the second request message is used to request to obtain the SL positioning indication information; The base station receives a second response message sent by the target device, where the second response message includes the SL positioning indication information.

12. The method according to claim 10, wherein: The base station obtains the SL positioning indication information from the target device, including: When the base station establishes a connection with the target device, the base station obtains the SL positioning indication information from the target device; Alternatively, when the SL positioning supported by the network changes, the base station obtains the SL positioning indication information from the target device.

13. An information transmission device, comprising a memory, a transceiver, and a processor; Memory for storing computer programs; a transceiver, configured to transmit and receive data under the control of the processor; and a processor, configured to read the computer program in the memory and perform the following operations: Obtain system information sent by the base station, where the system information includes direct link SL positioning indication information, and the SL positioning indication information is used to indicate whether the network supports SL positioning.

14. The device according to claim 13, wherein: The processor also implements the following steps: The SL positioning mode is determined according to the SL positioning indication information.

15. The device according to claim 13, wherein: The system information includes a system information block or a positioning system information block.

16. The device according to claim 13, wherein: The SL positioning indication information is determined based on a public land mobile network PLMN, or the SL positioning indication information is not determined based on a PLMN.

17. The device according to claim 13, wherein: The processor also implements the following steps: The valid area of ​​the system information is determined according to the area range indication field in the system information, and the area range indication field is used to indicate whether the SL positioning indication information is area valid information.

18. The device according to claim 17, wherein: The processor also implements the following steps: In a case where the area range indication field indicates that the SL positioning indication information is area valid information, determining an area corresponding to the system information area identifier in the system information as a valid area of ​​the SL positioning indication information; When the area range indication field indicates that the SL positioning indication information is not area valid information, it is determined that the cell corresponding to the terminal is the valid area of ​​the SL positioning indication information.

19. The device according to claim 13, wherein: The processor also implements the following steps: Acquiring the system information based on periodic broadcast of a base station; Alternatively, a first request message is sent to a base station, where the first request message is used to request acquisition of system information; and a first response message is received from the base station, where the first response message includes the system information.

20. The device according to claim 13, wherein: The processor also implements the following steps: When the SL positioning indication information indicates that the network does not support SL positioning, determining that the SL positioning mode is a first SL positioning mode, where the first SL positioning mode is a positioning mode in which only the terminal participates; When the SL positioning indication information indicates that the network supports SL positioning, the SL positioning mode is determined to be a second SL positioning mode, and the second SL positioning mode is a network-based positioning mode.

21. An information transmission device, comprising a memory, a transceiver, and a processor; Memory for storing computer programs; a transceiver, configured to transmit and receive data under the control of the processor; and a processor, configured to read the computer program in the memory and perform the following operations: Send system information, where the system information includes direct link SL positioning indication information, where the SL positioning indication information is used to indicate whether the network supports SL positioning.

22. The device according to claim 21, wherein The processor also implements the following steps: The SL positioning indication information is obtained from a target device, where the target device includes an access and mobility management function AMF and / or a positioning management function LMF.

23. The device according to claim 22, wherein: The processor also implements the following steps: Sending a second request message to the target device, where the second request message is used to request to obtain the SL positioning indication information; Receive a second response message sent by the target device, where the second response message includes the SL positioning indication information.

24. The device according to claim 22, wherein: The processor also implements the following steps: When a connection is established between the base station and the target device, obtaining the SL positioning indication information from the target device; Alternatively, when the SL positioning supported by the network changes, the SL positioning indication information is obtained from the target device.

25. An information transmission device, comprising: The first acquisition unit is used to acquire system information sent by a base station, where the system information includes direct link SL positioning indication information, and the SL positioning indication information is used to indicate whether the network supports SL positioning.

26. The apparatus according to claim 25, further comprising: The first determining unit is used to determine the SL positioning mode according to the SL positioning indication information.

27. The device according to claim 25, wherein: The system information includes a system information block or a positioning system information block.

28. The device according to claim 25, wherein: The SL positioning indication information is determined based on a public land mobile network PLMN, or the SL positioning indication information is not determined based on a PLMN.

29. The apparatus of claim 25, further comprising: The second determination unit is used to determine the valid area of ​​the system information according to the area range indication field in the system information, and the area range indication field is used to indicate whether the SL positioning indication information is area valid information.

30. The device according to claim 29, wherein: The second determining unit includes: A first determining subunit is configured to determine, when the area range indication field indicates that the SL positioning indication information is area valid information, an area corresponding to the system information area identifier in the system information as a valid area of ​​the SL positioning indication information; The second determining subunit is used to determine that the cell corresponding to the terminal is the cell of the SL positioning indication information when the area range indication field indicates that the SL positioning indication information is not area valid information. Valid area.

31. The apparatus of claim 25, wherein: The first acquisition unit is used for: Acquiring the system information based on periodic broadcast of a base station; Alternatively, sending a first request message to the base station, where the first request message is used to request to obtain system information; The terminal receives a first response message sent by the base station, where the first response message includes the system information.

32. The apparatus of claim 25, wherein: The first determining unit is used for: When the SL positioning indication information indicates that the network does not support SL positioning, determining that the SL positioning mode is a first SL positioning mode, where the first SL positioning mode is a positioning mode in which only the terminal participates; When the SL positioning indication information indicates that the network supports SL positioning, the SL positioning mode is determined to be a second SL positioning mode, and the second SL positioning mode is a network-based positioning mode.

33. An information transmission device, comprising: The first sending unit is used to send system information, where the system information includes direct link SL positioning indication information, and the SL positioning indication information is used to indicate whether the network supports SL positioning.

34. The apparatus of claim 33, further comprising: The second acquisition unit is used to acquire the SL positioning indication information from the target device, and the target device includes an access and mobility management function AMF and / or a positioning management function LMF.

35. The device according to claim 34, wherein The second acquiring unit includes: A sending subunit, configured to send a second request message to a target device, where the second request message is used to request to obtain the SL positioning indication information; A receiving subunit is used to receive a second response message sent by the target device, where the second response message includes the SL positioning indication information.

36. The device according to claim 34, wherein The second acquisition unit is used for: When the base station establishes a connection with the target device, obtaining the SL positioning indication information from the target device; Alternatively, when the SL positioning supported by the network changes, the SL positioning indication information is obtained from the target device.

37. A processor-readable storage medium, wherein the processor-readable storage medium stores a computer program, wherein the computer program is used to enable the processor to execute the steps of the information transmission method as described in any one of claims 1 to 8, or to execute the steps of the information transmission method as described in any one of claims 9 to 12.

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