Information exchange method, first network element, terminal, communication device, and storage medium

Abstract

The present disclosure relates to an information exchange method, a first network element, a terminal, a communication device, and a storage medium. The method comprises: a first network element or a server terminal sends first information to a first terminal, wherein the first information is used for exchanging service information of the first terminal with the first terminal, and the first information is further used for instructing the first terminal to exchange service information with at least one second terminal, or instructing the first terminal to transparently forward the service information to the at least one second terminal. Therefore, service information of a terminal that is not connected to a network element is effectively transmitted.

Description

Information interaction method, first network element, terminal, communication equipment and storage medium Technical Field

[0001] The present disclosure relates to the field of communication technologies, and in particular to an information interaction method, a first network element, a terminal, a communication device, and a storage medium. Background Art

[0002] In order to support direct communication between terminals, a sidelink (SL) communication method is introduced. Ranging refers to determining the distance between two or more terminals, or the direction of one terminal relative to another terminal, through the PC5 interface. The PC5 interface refers to the communication interface between terminals, for example, a short-distance direct communication interface between vehicles, people, and road infrastructure. Sidelink SL positioning refers to estimating the position of the located terminal based on the sidelink SL. For example, ranging or sidelink SL positioning of the target terminal (target user equipment, target UE) can be performed based on the information of the positioning terminal (located user equipment, located UE). The target terminal can also be assisted in positioning based on an SL reference terminal (positioning terminal) whose position is known or can be known during ranging or sidelink SL positioning. For another example, the relative position information of a target terminal (target user equipment, target UE) and an SL reference terminal (sidelink reference user equipment, sidelink reference UE) can be determined through ranging or sidelink SL positioning.

[0003] Summary of the Invention

[0004] The embodiments of the present disclosure provide an information interaction method, a first network element, a terminal, a communication device, a chip system, a storage medium, a computer program, and a computer program product, which can be applied in the field of communication technology to solve the technical problem that "the relevant technology cannot effectively transmit the business information of the terminal that is not connected to the network element."

[0005] The present disclosure proposes an information interaction method, a first network element, a terminal, a communication device, and a storage medium.

[0006] According to a first aspect of an embodiment of the present disclosure, an information interaction method is proposed, which is executed by a first network element or a server terminal, including: sending first information to the first terminal, wherein the first information is used to interact with the first terminal to exchange business information of the first terminal; the first information is also used to instruct the first terminal to interact with at least one second terminal for business information, or to instruct the first terminal to transparently transmit business information to at least one second terminal.

[0007] According to the second aspect of an embodiment of the present disclosure, an information interaction method is proposed, which is executed by a second terminal, including: sending fourth information to the first terminal, wherein the fourth information is used to instruct the first terminal to interact with the first network element or server terminal about the business information of the second terminal, or to instruct the first terminal to transparently transmit the business information of the second terminal to the first network element or server terminal.

[0008] According to the third aspect of an embodiment of the present disclosure, an information interaction method is proposed, which is executed by a first terminal, including: receiving first information sent by a first network element or a server terminal, wherein the first information is used to interact with the first terminal to exchange business information of the first terminal; the first information is also used to instruct the first terminal to interact with at least one second terminal to exchange business information, or to instruct the first terminal to transparently transmit business information to at least one second terminal.

[0009] According to the fourth aspect of an embodiment of the present disclosure, an information interaction method is proposed, which is executed by a first terminal, including: receiving fourth information sent by a second terminal, wherein the fourth information is used to instruct the first terminal to interact with the first network element or server terminal about the business information of the second terminal, or to instruct the first terminal to transparently transmit the business information of the second terminal to the first network element or server terminal.

[0010] According to the fifth aspect of an embodiment of the present disclosure, an information interaction method is proposed, including: a first network element or a server terminal sends first information to a first terminal, wherein the first information is used to interact with the first terminal to exchange business information of the first terminal; the first information is also used to instruct the first terminal to interact with at least one second terminal for business information, or to instruct the first terminal to transparently transmit business information to at least one second terminal; the first terminal receives the first information sent by the first network element or the server terminal.

[0011] According to the sixth aspect of an embodiment of the present disclosure, an information interaction method is proposed, including: a second terminal sends fourth information to a first terminal, wherein the fourth information is used to instruct the first terminal to interact with a first network element or a server terminal about the business information of the second terminal, or to instruct the first terminal to transparently transmit the business information of the second terminal to the first network element or the server terminal; and the first terminal receives the fourth information sent by the second terminal.

[0012] According to the seventh aspect of an embodiment of the present disclosure, a first network element is proposed, including: a transceiver module, used to send first information to a first terminal, wherein the first information is used to interact with the first terminal to exchange business information of the first terminal; the first information is also used to instruct the first terminal to interact with at least one second terminal for business information, or to instruct the first terminal to transparently transmit business information to at least one second terminal.

[0013] According to the eighth aspect of an embodiment of the present disclosure, a terminal is proposed, including: a transceiver module, used to send first information to a first terminal, wherein the first information is used to exchange business information of the first terminal with the first terminal; the first information is also used to indicate the first terminal to exchange business information with at least one second terminal, or to indicate the first terminal to transparently transmit business information to at least one second terminal; or, used to send fourth information to the first terminal, wherein the fourth information is used to indicate the first terminal to exchange business information of the second terminal with a first network element or a server terminal, or to indicate the first terminal to transparently transmit business information of the second terminal to the first network element or the server terminal; or, used to receive the first information sent by the first network element or the server terminal; or, used to receive the fourth information sent by the second terminal.

[0014] According to the ninth aspect of the embodiment of the present disclosure, a communication device is proposed, comprising: one or more processors; wherein the processor is used to call instructions so that the communication device executes the information interaction method of any one of the first to sixth aspects.

[0015] According to the tenth aspect of an embodiment of the present disclosure, a communication system is proposed, characterized in that it includes a first network element or server terminal, a second terminal, and a first terminal, wherein the first network element or server terminal is configured to implement the information interaction method of the first aspect, the second terminal is configured to implement the information interaction method of the second aspect, and the first terminal is configured to implement the information interaction method of the third aspect or the fourth aspect.

[0016] According to the eleventh aspect of the embodiment of the present disclosure, a storage medium is proposed, which stores instructions, and is characterized in that when the instructions are executed on a communication device, the communication device executes the information interaction method as described in any one of the first to sixth aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the background technology, the drawings required for use in the embodiments of the present disclosure or the background technology will be described below.

[0018] FIG1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure;

[0019] FIG2 is a schematic diagram of an SLPP configuration for SL positioning in an embodiment of the present disclosure;

[0020] 3A-3D are interaction diagrams illustrating an information interaction method according to an embodiment of the present disclosure;

[0021] 4A-4C are interaction diagrams illustrating an information interaction method according to another embodiment of the present disclosure;

[0022] 5A-5B are interaction diagrams illustrating an information interaction method according to another embodiment of the present disclosure;

[0023] 6A-6F are interaction diagrams illustrating an information interaction method according to another embodiment of the present disclosure;

[0024] 7A-7B are interaction diagrams illustrating an information interaction method according to yet another embodiment of the present disclosure;

[0025] FIG8A is a schematic diagram of transmitting terminal capabilities in the SL-MO-LR process according to an embodiment of the present disclosure;

[0026] FIG8B is a schematic diagram of transmitting terminal capabilities in the SL-MT-LR process according to an embodiment of the present disclosure;

[0027] FIG9A is a schematic structural diagram of a first network element proposed in an embodiment of the present disclosure;

[0028] FIG9B is a schematic structural diagram of a terminal proposed in an embodiment of the present disclosure;

[0029] FIG10A is a schematic structural diagram of a communication device proposed in an embodiment of the present disclosure;

[0030] FIG10B is a schematic structural diagram of a chip proposed in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0031] The present disclosure provides an information interaction method and apparatus, a communication device, a communication system, and a storage medium. In some embodiments, the terms "information interaction method" and "information processing method" and "communication method" are interchangeable; the terms "information interaction apparatus" and "information processing apparatus" and "communication apparatus" are interchangeable; and the terms "information processing system" and "communication system" are interchangeable.

[0032] The embodiments of the present disclosure are not exhaustive and are merely illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0033] In each embodiment of the present disclosure, unless otherwise specified or provided for by logic, the terms and / or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

[0034] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0035] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "above", "said", "the", "the", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun following the article may be understood as a singular expression or a plural expression.

[0036] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0037] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0038] In some embodiments, descriptions such as "at least one of A and B," "A and / or B," "A in one case, B in another case," or "in response to one case A, in response to another case B" may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); and in some embodiments, A and B (both A and B are executed). The above is also applicable when there are more branches such as A, B, and C.

[0039] In some embodiments, "A or B" and other descriptions may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The above is also applicable when there are more branches such as A, B, C, etc.

[0040] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different; for another example, if the description object is "information", then the "first information" and the "second information" can be the same information or different information, and their contents can be the same or different.

[0041] In some embodiments, “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0042] In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0043] In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not less than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

[0044] In some embodiments, devices and equipment can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they can also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject", etc.

[0045] In some embodiments, "network" can be interpreted as devices included in the network, such as access network equipment, core network equipment, etc.

[0046] In some embodiments, "access network device (AN device)" may also be referred to as "radio access network device (RAN device)", "base station (BS)", "radio base station", "fixed station", and in some embodiments may also be understood as "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission and / or reception point (TRP)" "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier", "bandwidth part (BWP)", etc.

[0047] In some embodiments, "terminal" or "terminal device" may be referred to as "user equipment (UE)", "user terminal" "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc.

[0048] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0049] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0050] FIG1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure. As shown in FIG1 , a communication system 100 may include a terminal 101 and a core network device 102 .

[0051] In some embodiments, the terminal 101 may include, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and at least one of a wireless terminal device in a smart home, but is not limited thereto.

[0052] In some embodiments, the core network device 102 may be a single device including a first network element 1021, a second network element 1022, a third network element 1023, etc., or may be a plurality of devices or a device group including all or part of the first network element 1021, the second network element 1022, and the third network element 1023. The network elements may be virtual or physical. The core network may include, for example, at least one of an evolved packet core (EPC), a 5G core network (5GCN), and a next generation core (NGC).

[0053] In some embodiments, the first network element 1021 is, for example, a location management function (LMF) network element that provides positioning services, although the name is not limited thereto. The LMF network element is located on the core network (CN) side and is used to provide location management function services to terminals. The LMF network element is used to coordinate the overall positioning and resource scheduling of terminals registered with or accessing the 5G core network (5GCN).

[0054] In some embodiments, the first network element 1021 is used to provide location management functionality.

[0055] In some embodiments, the second network element 1022 is, for example, an Access and Mobility Management Function (AMF) network element, but the name is not limited thereto. The AMF network element is a logical node function network element on the core network side. It is the core network control plane access point for terminals and wireless devices, receives all connection and session-related information from user equipment, and performs registration, connection, reachability, and mobility management. In addition, the AMF network element provides a session management message transmission channel for terminal devices and session management function (SMF) devices, and provides authentication and authorization functions for user access.

[0056] In some embodiments, the second network element 1022 is used to provide access and mobility management functions.

[0057] In some embodiments, the third network element 1023 is, for example, a network element that can process external positioning requests, trigger the network to initiate positioning, and return the positioning result to the client that initiated the positioning.

[0058] In some embodiments, the third network element 1023 is, for example, a Gateway Mobile Location Center (GMLC) network element, but the name is not limited thereto.

[0059] In some embodiments, the terminal 101 and the core network device 102 can be connected through an access network device. Optionally, the access network device is, for example, a node or device that accesses the terminal to a wireless network. The access network device may include an evolved NodeB (eNB), a next generation evolved NodeB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved nodeB (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and at least one of an access node in a wireless fidelity (WiFi) system, but is not limited thereto.

[0060] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

[0061] The following embodiments of the present disclosure may be applied to the communication system 100 shown in Figure 1, or a portion thereof, but are not limited thereto. The entities shown in Figure 1 are illustrative only. The communication system may include all or part of the entities shown in Figure 1, or may include other entities outside of Figure 1. The number and form of the entities may be arbitrary. The connection relationship between the entities is illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, including direct or indirect, wired or wireless.

[0062] The embodiments of the present disclosure may be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G New Radio (NR), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New Radio Access (NX), Future Generation Radio Access (FX), Global System for Mobile Communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.17 (WiMAX (registered trademark)), IEEE 802.18 (WiMAX (registered trademark)), IEEE 802.19 (WiMAX (registered trademark)), IEEE 802.20 (WiMAX (registered trademark)), IEEE 802.21 (WiMAX (registered trademark)), IEEE 802.22 (WiMAX (registered trademark)), IEEE 802.23 (WiMAX (registered trademark)), IEEE 802.24 (WiMAX (registered trademark)), IEEE 802.25 (WiMAX (registered trademark)), IEEE 802.26 (WiMAX (registered trademark)), IEEE 802.27 (WiMAX (registered trademark)), IEEE 802.28 (WiMAX (registered trademark)), IEEE 802.29 (WiMAX (registered trademark)), IEEE 802.30 (WiMAX (registered trademark)), IEEE 802.31 (WiMAX (registered trademark)), IEEE 802.32 (WiMAX (registered trademark)), IEEE 802.33 (WiMAX (registered trademark)), 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X), systems utilizing other user plane connection establishment methods, and next-generation systems based on and extending these systems. Furthermore, multiple systems may be combined (for example, a combination of LTE or LTE-A with 5G).

[0063] Optionally, the target terminal is a terminal whose distance, direction and / or position is measured based on SL in ranging or SL service with the support of one or more SL reference terminals.

[0064] Optionally, the SL reference terminal is a terminal that supports positioning of a target terminal, for example, by using SL to send and / or receive reference signals for positioning, provide information related to positioning, etc.

[0065] Optionally, the positioning terminal is a SL reference terminal whose position is known or can be known using positioning based on the Uu interface. The positioning terminal can be used to determine the position of the target terminal using SL positioning.

[0066] Optionally, the SL positioning client terminal refers to a third-party terminal other than the SL reference terminal, target terminal, positioning terminal, etc., which initiates ranging or SL positioning service requests on behalf of the application resident thereon.

[0067] Optionally, a server terminal may refer to a terminal that can provide services for service implementation. For example, during service implementation, the server terminal may distribute service information and / or provide certain service functions. If applied to ranging / SL positioning services, the server terminal may be, for example, a SL positioning server terminal. The SL positioning server terminal may distribute service assistance data and / or provide location calculation functions, and calculate the location of the target terminal, without limitation.

[0068] Optionally, in the SL positioning process involving 5GC, the position of the target terminal can be estimated with the help of the network by using the position of one or more positioning terminals, and the distance and / or direction between the target terminal and the positioning terminal, or the relative position, or distance and direction between the target terminal and one or more SL reference terminals, without limitation.

[0069] Optionally, the ranging / SL positioning results may include: absolute position, relative position, distance, and direction, depending on the service requirements. If the target terminal decides to initiate the Sidelink Mobile Originated Location Request (SL-MO–LR) process, the target terminal may include information about one or more SL reference terminals and / or positioning terminals in the service request message. If the Location Services Client (LCS Client) or Application Function (AF) network element decides to obtain ranging / SL positioning results for a group of n terminals (n≥2), i.e., terminal 1, terminal 2, ..., terminal n, the Gateway Mobile Location Center (GMLC) may specify the target terminal from the n terminals, and specify one or more reference terminals and / or positioning terminals, and then the Sidelink Mobile Terminated Location Request (SL-MT–LR) process may be applied.

[0070] Optionally, the 5GC Mobile Originated Location Request (5GC-MO-LR) and 5GC Mobile Terminated Location Request (5GC-MT-LR) services can be applied to obtain the absolute position of the target terminal based on SL positioning.

[0071] Optionally, in the process of terminal positioning involving SL positioning and 5GC, all terminal capabilities must be transmitted to the LMF network element, but only one terminal (for example, a target terminal with a non-access stratum (NAS) connection) is directly connected to the LMF network element. It should be noted that the terminal connection with the LMF means that the terminal can establish a NAS connection with the network and interact with the LMF of the service terminal through the AMF. Except for the terminal that establishes a NAS connection, other terminals interact with the network through the terminal that establishes a NAS with the network.

[0072] Optionally, in addition to exchanging terminal capabilities related to ranging / SL positioning, the sidelink positioning protocol (SLPP) also supports exchanging auxiliary data required for ranging / SL positioning, and exchanges measurement data and / or results of ranging / SL positioning in the ranging / SL positioning process, wherein the auxiliary data is provided by the LMF network element or requested by the terminal and provided by the LMF network element, and the measurement data and / or results are provided by the terminal or requested by the LMF network element and provided by the terminal. As shown in Figure 2, Figure 2 is a schematic diagram of the SLPP configuration for SL positioning in an embodiment of the present disclosure.

[0073] Therefore, how to transmit the service information of the terminal that is not connected to the network element needs to be further solved.

[0074] In the embodiments of the present disclosure, interaction may be, for example, "exchange," which may, for example, indicate that a first terminal exchanges service information of the second terminal with at least one second terminal, such as exchange capability information (exchange the Ranging / Sidelink Positioning capability, such as Request Capabilities or Provide Capabilities), exchange the Ranging / Sidelink Positioning assistant data (exchange the Ranging / Sidelink Positioning assistant data, such as Request Assistance Data or Provide Assistance Data), or exchange Ranging / Sidelink positioning measurement data / result, such as Request Location Information or Provide Location Information). Interaction may, for example, mean that the first terminal does not transparently transmit the second message from the first network element, the server terminal, or the second terminal. Transparent transmission may, for example, mean that the first terminal transparently transmits ("forward transparently," "exchange transparently," "transfer transparently," or "send transparently") the second message from the first network element, the server terminal, or the second terminal.

[0075] FIG3A is an interactive diagram of an information interaction method according to an embodiment of the present disclosure. As shown in FIG3A , the present disclosure embodiment relates to an information interaction method that can be used in a communication system 100. The method includes:

[0076] Step S3101: A first network element or a server terminal sends first information to a first terminal.

[0077] In some embodiments, the first network element may specifically be, for example, a location management function (LMF) network element. The first terminal may be a terminal connected to the first network element. The second terminal refers to a terminal that is not connected to the first network element. The first terminal is connected to the first network element, which may, for example, mean that the first terminal interacts with the first network element through other devices connected to the network, or the first terminal and the first network element are directly connected. If the first network element is an LMF network element, the first terminal is connected to the LMF network element, which may mean that the first terminal can establish a NAS connection with the network and interact with the LMF network element of the service terminal through the AMF network element.

[0078] In the embodiments of the present disclosure, the information interaction method can be applied to ranging / SL positioning services, and of course, can also be applied to any other possible services without limitation.

[0079] When the information interaction method is applied to ranging / SL positioning services, the first terminal may be, for example, a target terminal, and the second terminal may be, for example, a positioning terminal or a SL reference terminal (SL Reference UE); or the first terminal may be, for example, a positioning terminal, and the second terminal may be, for example, a SL reference terminal (SL Reference UE); or, the first terminal may be, for example, a SL reference terminal (SL Reference UE), and the second terminal may be, for example, a positioning terminal, and there is no limitation on this.

[0080] In some embodiments, the first information is used to exchange business information of the first terminal with the first terminal; the first information is also used to instruct the first terminal to exchange business information with at least one second terminal, or to instruct the first terminal to transparently transmit business information of the corresponding second terminal to at least one second terminal.

[0081] This embodiment illustrates an implementation method for exchanging service information of the first terminal with a first terminal based on first information, and for instructing the first terminal to exchange service information with at least one second terminal. For implementation methods for exchanging service information of the first terminal with a first terminal based on a first information request, and for instructing the first terminal to transparently transmit the service information of the second terminal to at least one second terminal, please refer to the following embodiments.

[0082] In some embodiments, the service information includes at least one of the following: terminal capabilities; service measurement results; service auxiliary data; and service-related measurement results. This allows the information exchange method in the disclosed embodiments to support the transmission of various possible service information, or combinations of various possible service information, for terminals not connected to the first network element, and effectively adapts to personalized service scenarios.

[0083] In this embodiment, the first network element or the server terminal may instruct the first terminal to initiate a request to obtain terminal capabilities, and / or service measurement results, and / or service-related measurement results of at least one second terminal.

[0084] In some embodiments, the interaction mode of the service information of the second terminal may be a first interaction mode or a second interaction mode. The mode in which the request is initiated by the first terminal or the mode in which the first terminal does not transparently transmit the information may also be referred to as the first interaction mode. For example, when the first terminal determines the service information interaction requirements of the first network element or server terminal, the first terminal initiates a request to obtain at least one of the following information of at least one second terminal: terminal capabilities; service measurement results; service-related measurement results. Or, when the first terminal determines the service information interaction requirements of the second terminal, the first terminal initiates a request to obtain the service auxiliary data of the second terminal from the first network element or server terminal, and provides the service auxiliary data to the second terminal.

[0085] That is, in the first interaction mode, the first terminal can be the initiator of exchanging service information with at least one second terminal. If the first network element or server terminal initiates a request to exchange service information with at least one second terminal, the first terminal, as the initiator, exchanges service information with at least one second terminal. For example, service information of the second terminal can be obtained from the second terminal, and the obtained service information of the at least one second terminal (e.g., terminal capabilities; service measurement results; service-related measurement results) can be fed back to the first network element or server terminal. Alternatively, service information of the second terminal (e.g., service assistance data) can be obtained from the first network element or server terminal, and the obtained service information of the second terminal can be fed back to the second terminal.

[0086] In some embodiments, service information of the second terminal can also be obtained based on a second interaction mode. For example, the first network element or server terminal, upon determining a service information interaction requirement, initiates a request to instruct the first terminal to transparently transmit the service information of the corresponding second terminal to at least one second terminal. In this second interaction mode, the first terminal is used to transparently transmit messages and information between the first network element and each second terminal, or between the server terminal and each second terminal. A detailed description of the second interaction mode can be found in the subsequent embodiments.

[0087] In some embodiments, the interaction mode of the second terminal's service information can be determined based on at least one of the following: indication information of the first terminal; interaction capabilities of the first terminal; configuration information of the first network element; or configuration information of the server terminal. This effectively increases the flexibility of determining the interaction mode of the second terminal's service information and effectively applies to personalized service scenarios.

[0088] In some embodiments, the first network element or server terminal sends the first information to the first terminal, which may include the following steps: the first terminal sends the second information to the first network element or server terminal, and the first network element or server terminal sends the first information to the first terminal based on the second information. The second information can be used to request the implementation of the service, thereby being effectively applicable to business application scenarios where the implementation of the service is triggered by the first terminal.

[0089] In some embodiments, the service is, for example, a ranging or SL positioning service, so that during the implementation of the ranging or SL positioning service, service information of a terminal that is not connected to a network element can be effectively transmitted.

[0090] In some embodiments, the second information includes at least one of the following: service information of at least one second terminal; third indication information, wherein the third indication information indicates that the service information of at least one second terminal has been exchanged; and fourth indication information, wherein the fourth indication information indicates a preferred exchange method for the service information of the second terminal. This enables the first network element or server terminal to make an accurate decision as to which second terminal service information needs to be exchanged.

[0091] In some embodiments, the first terminal may indicate service information of one or more second terminals to the first network element or the server terminal.

[0092] In some embodiments, the first terminal may indicate to the first network element or server terminal that service information of one or more second terminals has been exchanged, so as to facilitate the first network element or server terminal in determining which second terminal service information needs to be exchanged to implement the service.

[0093] In some embodiments, the first terminal can indicate to the first network element or server terminal the preferred interaction method for the service information of the second terminal, so that the first network element or server terminal can interact with the service information of at least one second terminal based on the preferred interaction method indicated by the first terminal.

[0094] In some embodiments, the first terminal may also indicate at least two of the service information, third indication information, and fourth indication information of at least one second terminal to the first network element or server terminal, thereby supporting the first network element or server terminal to interact with comprehensive service information.

[0095] In some embodiments, the first information includes at least one of the following: a first message, wherein the first message is used to exchange service information of the first terminal; at least one second terminal information, wherein the second terminal information is used to describe the second terminal and instruct the first terminal to exchange service information with the corresponding second terminal; a second terminal information list, wherein the second terminal information list includes: at least one second terminal information; first indication information, wherein the first indication information is used to instruct the first terminal to exchange service information with at least one second terminal; and at least one second message, wherein the second message is associated with a second terminal and is used to exchange service information of the second terminal through the first terminal. Thus, it is possible to effectively instruct the first terminal to exchange service information of at least one second terminal.

[0096] It should be noted that the first message or the second message may be, for example, a sidelink positioning protocol (SLPP) message, and the SLPP message may also refer to an SLPP container, which may be encapsulated in a payload container, an embedded message parameter, or an embedded payload container, and is not limited here.

[0097] In some embodiments, the first information may include at least one of the following: fifth indication information, where the fifth indication information is used to indicate that the first terminal selected the second terminal or the first network element selected the second terminal; sixth indication information, where the sixth indication information is used to indicate the exchange of service information of the second terminal selected by the first terminal; and seventh indication information, where the seventh indication information is used to indicate the exchange of service information of the second terminal discovered by the first terminal. This effectively applies to application scenarios where the second terminal has not yet been discovered and the first network element or server terminal has not yet determined which second terminal's service information needs to be exchanged.

[0098] Step S3102: The first terminal generates a third message associated with the second terminal based on the first information.

[0099] The third message is used for the first terminal to interact with the service information of the second terminal associated therewith. The third message is a message constructed by the first terminal.

[0100] In some embodiments, after receiving the first information, the first terminal may exchange service information of at least one second terminal. If the first information includes at least one second message (the second message included in the first information is constructed by the first network element or server terminal), then the at least one second message terminates at the first terminal. This can be understood as the first terminal not exchanging service information of the second terminal based on the second message constructed by the first network element or server terminal. Instead, the first information is referenced to generate (reconstruct) a message associated with the second terminal to exchange service information of the second terminal. The message generated by the first terminal for exchanging service information of the second terminal can be referred to as a third message.

[0101] In some embodiments, if there are multiple second terminals with which service information needs to be exchanged, a third message associated with each second terminal may be generated.

[0102] In some embodiments, if there are multiple second terminals and the first terminal has exchanged service information with some of the second terminals, the first terminal may generate a third message associated with each of the remaining second terminals, without limitation.

[0103] In some embodiments, the first terminal generates a third message associated with the second terminal based on the first information, and the third message is used by the first terminal to provide the second terminal with service information of the associated second terminal.

[0104] It should be noted that the third message may be, for example, a sidelink positioning protocol (SLPP) message. The SLPP message may also refer to an SLPP container, which may be encapsulated in a payload container, or in an embedded message parameter, or in an embedded payload container. There is no limitation here.

[0105] Step S3103: The first terminal sends fifth information to the second terminal, where the fifth information includes: a third message.

[0106] In some embodiments, the first terminal may send fifth information to the second terminal, the fifth information including the third message, to exchange service information of the second terminal based on the third message. If there are multiple second terminals, the first terminal may send fifth information to each second terminal, including the third message in the fifth information, to exchange terminal capabilities, and / or service measurement results, and / or service-related measurement results of the corresponding second terminal, or provide assistance data for the second terminal.

[0107] Step S3104: The second terminal sends its service information to the first terminal.

[0108] In some embodiments, after receiving the fifth information sent by the first terminal, the second terminal obtains the third message from the fifth information and feeds back the terminal capability of the second terminal, and / or service measurement results, and / or service-related measurement results to the first terminal.

[0109] Step S3105: The first terminal receives service information from the second terminal.

[0110] In some embodiments, the first terminal may receive service information fed back by at least one second terminal and trigger subsequent steps.

[0111] In some embodiments, the service information of the at least one second terminal includes any of the following: service information of the at least one second terminal selected by the first terminal; service information of the at least one second terminal discovered by the first terminal. Thus, the service information of the at least one second terminal selected by the first terminal, or the service information of the at least one second terminal discovered by the first terminal, can be effectively transmitted to the first network element or server terminal, facilitating efficient implementation of the service.

[0112] Step S3106: The first terminal sends service information of the first terminal and service information of at least one second terminal to the first network element or the server terminal.

[0113] In some embodiments, after exchanging service information of at least one second terminal, the first terminal may send the service information of the first terminal and the service information of at least one second terminal to the first network element or the server terminal.

[0114] In some embodiments, the first network element or the server terminal may receive the service information of the first terminal and the service information of at least one second terminal sent by the first terminal.

[0115] In some embodiments, the first terminal may also send information of at least one selected second terminal or information of at least one discovered second terminal to the first network element or server terminal. The second terminal information may be used to describe the second terminal. For example, the second terminal information may be a second terminal identifier. Then, the first network element or server terminal may accurately know at least one second terminal selected by the first terminal or at least one discovered second terminal.

[0116] In some embodiments, the first terminal can send a second terminal information list to the first network element or server terminal, wherein the second terminal information list includes: at least one selected second terminal information or at least one discovered second terminal information, the second terminal information can be used to describe the second terminal, and the second terminal information is, for example, a second terminal identifier, so that the first network element or server terminal can accurately know the at least one second terminal selected by the first terminal, or the at least one discovered second terminal.

[0117] In some embodiments, when the first information may include at least one of the fifth indication information, the sixth indication information, and the seventh indication information, the fifth indication information is used to indicate that the first terminal selects the second terminal or that the first network element selects the second terminal; the sixth indication information is used to indicate service information of the second terminal selected by the interacting first terminal; and the seventh indication information is used to indicate service information of the second terminal discovered by the interacting first terminal. The following possible implementations may exist:

[0118] In some embodiments, if the fifth indication information indicates that the second terminal is selected by the first terminal, the first terminal can determine whether to package the service information of the second terminal or the second terminal list selected by the first terminal and send it to the LMF network element in the response after receiving the second information processing, based on whether the first information contains the sixth indication information. For example, if the first information contains the sixth indication information, the service information of the second terminal or the second terminal list selected by the first terminal can be packaged and sent to the LMF network element. If the first information does not contain the sixth indication information, the service information of the second terminal or the second terminal list selected by the first terminal may not be packaged and sent to the LMF network element.

[0119] In some embodiments, if the fifth indication information indicates that the second terminal is selected by the first network element or the server terminal, the first terminal can determine whether to package the service information of the second terminal or the second terminal list discovered by the first terminal and send it to the LMF network element in the response after receiving the second information processing by whether the seventh indication information is included in the first information. For example, if the first information includes the seventh indication information, the service information of the second terminal or the second terminal list discovered by the first terminal can be packaged and sent to the LMF network element. If the first information does not include the seventh indication information, the service information of the second terminal or the second terminal list discovered by the first terminal may not be packaged and sent to the LMF network element.

[0120] In some embodiments, if the first information includes the fifth indication information but does not include the sixth indication information and the seventh indication information, it can also be decided based on the implementation whether to carry the service information of the discovered / selected second terminal or the second terminal list in the response sent to the LMF network element.

[0121] In some embodiments, the first network element or server terminal may also directly receive service information reported by the second terminal through the first terminal, such as the terminal capability of the second terminal, and / or service measurement results, and / or service-related measurement results.

[0122] The information interaction method involved in the embodiments of the present disclosure may include at least one of steps S3101 to S3106. For example, step S3101 can be implemented as an independent embodiment, step S3102 can be implemented as an independent embodiment, and so on, but the present invention is not limited thereto. Steps S3101+S3102 can be implemented as independent embodiments, and steps S3101+S3102+S3103 can be implemented as independent embodiments, but the present invention is not limited thereto.

[0123] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0124] In this embodiment, a first network element or server terminal sends first information to a first terminal. The first terminal generates a third message associated with a second terminal based on the first information, wherein the third message is used by the first terminal to exchange service information of the associated second terminal or provide service information of the associated second terminal. The first terminal sends fifth information to the second terminal, wherein the fifth information includes: the third message; the second terminal sends the service information of the second terminal to the first terminal; the first terminal receives the service information of the second terminal and sends the service information of the first terminal and the service information of at least one second terminal to the first network element or server terminal; the first network element or server terminal receives the service information of the first terminal and the service information of the at least one second terminal sent by the first terminal. Thus, the first network element or server terminal can instruct the first terminal connected to the first network element to initiate a request to obtain service information of a terminal not connected to the network element.

[0125] FIG3B is an interactive diagram of an information interaction method according to another embodiment of the present disclosure. As shown in FIG3B , the present disclosure embodiment relates to an information interaction method that can be used in a communication system 100. The method includes:

[0126] Step S3201: A first network element or a server terminal sends first information to a first terminal.

[0127] In this embodiment, an implementation manner of exchanging service information of a first terminal or providing service information of a first terminal based on first information, and instructing the first terminal to transparently transmit the service information of the corresponding second terminal to at least one second terminal is shown.

[0128] In this embodiment, service information of the second terminal can be obtained based on a second interaction mode. The second interaction mode, for example, involves a first network element or a server terminal initiating a request upon determining a service information interaction requirement or a service information provision requirement to instruct the first terminal to transparently transmit service information of at least one second terminal. In the second interaction mode, the first terminal can transparently transmit messages and information between the first network element and each second terminal, or between the first terminal and each second terminal.

[0129] In this embodiment, the first network element or server terminal may instruct the first terminal to transparently transmit terminal capabilities, and / or service measurement results, and / or service-related measurement results of the corresponding second terminal to at least one second terminal. The first network element or server terminal may also provide service assistance data to the second terminal through the first terminal.

[0130] In some embodiments, the first information includes at least one of the following: a first message, wherein the first message is used to exchange service information of the first terminal; at least one second message, wherein the second message is associated with a second terminal and is used to transparently transmit the service information of the second terminal through the first terminal; and second indication information, wherein the second indication information is used to instruct the first terminal to transparently transmit the second message. Thus, the first terminal can be effectively instructed to transparently transmit the service information of at least one second terminal.

[0131] The second message included in the first message is used by the first network element or server terminal to initiate a request to obtain the service information of the associated second terminal. In other words, the second message is constructed by the first network element or server terminal and is used by the first network element or server terminal to exchange the service information of the associated second terminal.

[0132] The detailed description of step 3201 can also be found in the above embodiment and will not be repeated here.

[0133] Step S3202: The first terminal sends fifth information to the second terminal based on the first information, where the fifth information includes: a second message.

[0134] In some embodiments, in the case of an implementation method in which a first network element or a server terminal instructs a first terminal to transparently transmit service information of the second terminal to at least one second terminal, the first terminal may directly transparently transmit the second message included in the first message to the second terminal to collect service information of the corresponding second terminal or to provide service information of the corresponding second terminal. If there are multiple second terminals, the first terminal may send a fifth message to each second terminal, and include the corresponding second message in the fifth message to collect service information of each second terminal or to provide service information of the corresponding second terminal.

[0135] Step S3203: The second terminal sends service information of the second terminal to the first terminal.

[0136] In some embodiments, after receiving the fifth information sent by the first terminal, the second terminal obtains the second message from the fifth information and sends the service information of the second terminal to the first terminal.

[0137] Step S3204: The first terminal receives service information from the second terminal.

[0138] In some embodiments, the first terminal may collect service information of at least one second terminal and trigger subsequent steps.

[0139] Step S3205: The first terminal sends service information of the first terminal and service information of at least one second terminal to the first network element or the server terminal.

[0140] In some embodiments, after collecting service information of at least one second terminal, the first terminal may send the service information of the first terminal to the first network element or the server terminal, and transparently transmit the collected service information of the at least one second terminal.

[0141] In some embodiments, the first network element or the server terminal may receive service information of the first terminal and service information of at least one second terminal.

[0142] The information interaction method involved in the embodiments of the present disclosure may include at least one of steps S3201 to S3205. For example, step S3201 can be implemented as an independent embodiment, step S3202 can be implemented as an independent embodiment, and so on, but are not limited thereto. Steps S3201+S3202 can be implemented as independent embodiments, and steps S3201+S3202+S3203 can be implemented as independent embodiments, but are not limited thereto.

[0143] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0144] In this embodiment, a first network element or server terminal sends first information to a first terminal. The first terminal, based on the first information, sends fifth information to a second terminal, where the fifth information includes a second message. The second terminal sends service information of the second terminal to the first terminal. The first terminal receives the service information of the second terminal and sends the service information of the first terminal and service information of at least one second terminal to the first network element or server terminal. The first network element or server terminal receives the service information of the first terminal and service information of the at least one second terminal sent by the first terminal. Thus, the first network element or server terminal can instruct the first terminal to collect and transparently transmit service information of terminals not connected to the network element, thereby effectively transmitting service information of terminals not connected to the network element.

[0145] FIG3C is an interactive diagram of an information interaction method according to an embodiment of the present disclosure. As shown in FIG3C , the present disclosure embodiment relates to an information interaction method that can be used in a communication system 100. The method includes:

[0146] Step S3301: The second terminal sends fourth information to the first terminal.

[0147] The fourth information is used to instruct the first terminal to exchange service information of the second terminal with the first network element or the server terminal.

[0148] This embodiment illustrates an implementation in which a second terminal initiates a request and uses a first interaction method to exchange service information of the second terminal. For example, upon determining a service information interaction requirement or a service information provision requirement of the second terminal, the first terminal initiates a request to obtain service assistance data of the second terminal from the first network element or server terminal, or to provide the first network element or server terminal with the terminal capabilities of the second terminal, and / or service measurement results, and / or service-related measurement results.

[0149] That is, in the first interaction mode, the first terminal may be the initiator of obtaining service information from the second terminal. If the second terminal exchanges service auxiliary data of the second terminal, the first terminal, as the initiator, exchanges the service auxiliary data of the second terminal with the first network element and feeds back the obtained service auxiliary data to the second terminal that initiated the request. If the second terminal provides its terminal capabilities, and / or service measurement results, and / or service-related measurement results, the first terminal, as the initiator, provides the second terminal's terminal capabilities, and / or service measurement results, and / or service-related measurement results to the first network element.

[0150] In this embodiment, the fourth information may include at least one of the following: second terminal information, where the second terminal information is used to describe the second terminal and instruct the first terminal to exchange service information of the corresponding second terminal; first indication information, where the first indication information is used to instruct the first terminal to exchange service information of the second terminal; and a second message, where the second message is associated with the second terminal and is used to exchange service information of the second terminal through the first terminal. Thus, it is possible to effectively instruct the first terminal to exchange service information of at least one second terminal or provide service information of at least one second terminal.

[0151] Step S3302: The first terminal generates a third message associated with the second terminal according to the fourth information.

[0152] It should be noted that the above-mentioned second message and third message are used to indicate business information of different functions. The second message is used to exchange business information of the second terminal, and the second message is constructed by the second terminal. The second message can be terminated at the first terminal. When the first terminal exchanges the business message of the second terminal with the first network element, it can refer to the second message to construct the third message, that is, the third message is used to exchange business messages of the second terminal between the first terminal and the first network element or server terminal.

[0153] Step S3303: The first terminal sends third information to the first network element or the server terminal, where the third information includes: a third message.

[0154] Step S3304: The first network element or server terminal provides the service information of the second terminal to the first terminal.

[0155] Step S3305: The first terminal receives service information from the second terminal.

[0156] Step S3306: The first terminal sends the service information of the second terminal to the second terminal.

[0157] For the description of steps S3301-S3306, please refer to the above embodiment and will not be repeated here. The difference from the embodiment of Figure 3A above is that the third message constructed with the first terminal is used to exchange service auxiliary data of the second terminal from the first network element or server terminal or provide the terminal capabilities of the second terminal, and / or service measurement results, and / or service-related measurement results to the first network element or server terminal. After receiving the service auxiliary data fed back by the first network element or server terminal, the first terminal can feed back the service auxiliary data to the second terminal.

[0158] The information interaction method involved in the embodiments of the present disclosure may include at least one of steps S3301 to S3306. For example, step S3301 can be implemented as an independent embodiment, step S3302 can be implemented as an independent embodiment, and so on, but are not limited thereto. Steps S3301+S3302 can be implemented as independent embodiments, and steps S3301+S3302+S3303 can be implemented as independent embodiments, but are not limited thereto.

[0159] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0160] In this embodiment, the second terminal sends fourth information to the first terminal, where the fourth information is used to instruct the first terminal to exchange service information of the second terminal with the first network element or server terminal. The first terminal generates a third message associated with the second terminal based on the fourth information and sends the third information to the first network element or server terminal. The third information includes: the third message, the first network element or server terminal provides the service information of the second terminal to the first terminal, the first terminal receives the service information of the second terminal, and sends the service information of the second terminal to the second terminal. Thus, the second terminal can instruct the first terminal connected to the first network element to initiate a request to obtain service information of a terminal not connected to the network element.

[0161] FIG3D is an interactive diagram of an information interaction method according to an embodiment of the present disclosure. As shown in FIG3D , the present disclosure embodiment relates to an information interaction method that can be used in a communication system 100. The method includes:

[0162] Step S3401: The second terminal sends fourth information to the first terminal.

[0163] The fourth information is used to instruct the first terminal to transparently transmit the service information of the second terminal to the first network element or the server terminal.

[0164] This embodiment illustrates an implementation in which a second terminal initiates a request and uses a second interaction method to exchange service information with the second terminal. In this second interaction method, the first terminal can transparently transmit messages and information between the first network element and each second terminal, or between the first terminal and each second terminal. For example, upon determining the service information interaction requirements of the second terminal, the first terminal transparently transmits the service auxiliary data of the second terminal obtained from the first network element or server terminal.

[0165] In this embodiment, the fourth information may include at least one of the following: second terminal information, where the second terminal information is used to describe the second terminal and instruct the first terminal to transparently transmit the service information of the corresponding second terminal; a second message, where the second message is associated with the second terminal and is used to transparently transmit the service information of the second terminal through the first terminal; and second indication information, where the second indication information is used to instruct the first terminal to transparently transmit the second message. Thus, the first terminal can be effectively instructed to transparently transmit the service information of at least one second terminal.

[0166] Step S3402: The first terminal sends third information to the first network element or the server terminal based on the fourth information, where the third information includes: a second message.

[0167] Step S3403: The first network element or server terminal sends the service information of the second terminal to the first terminal.

[0168] Step S3404: The first terminal receives service information from the second terminal.

[0169] Step S3405: ​​The first terminal sends service information of the second terminal to the second terminal.

[0170] In some embodiments, the first network element or server terminal may also actively provide service information to the second terminal through the first terminal, such as providing service auxiliary data for the second terminal, and the second terminal may directly receive the service auxiliary data provided by the first network element or server terminal through the first terminal.

[0171] The information interaction method involved in the embodiments of the present disclosure may include at least one of steps S3401 to S3405. For example, step S3401 can be implemented as an independent embodiment, step S3402 can be implemented as an independent embodiment, and so on, but the present invention is not limited thereto. Steps S3401+S3402 can be implemented as independent embodiments, and steps S3401+S3402+S3403 can be implemented as independent embodiments, but the present invention is not limited thereto.

[0172] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0173] In this embodiment, the second terminal sends fourth information to the first terminal, and the first terminal sends third information to the first network element or server terminal based on the fourth information, where the third information includes a second message. The first network element or server terminal sends service information of the second terminal to the first terminal, and the first terminal receives the service information of the second terminal and sends the service information of the second terminal to the second terminal. Thus, the second terminal can instruct the first terminal connected to the first network element to transparently transmit service information of terminals that are not connected to the network element.

[0174] It should be noted that the first, second, and third messages described above are used to indicate service information of different functions. The first message is used to exchange service information of the first terminal, and the second message is used to exchange service information of the second terminal. The second message is constructed by the first network element or server terminal, or the second message can be constructed by the second terminal. The second message can terminate at the first terminal. When the first terminal exchanges the service information of the second terminal with the second terminal, it can refer to the second message to construct the third message. That is, the third message is used to exchange the service information of the second terminal between the first terminal and the second terminal, or to exchange the service information of the second terminal between the first terminal and the first network element or server terminal.

[0175] In some embodiments, the first message may specifically be, for example, initially sent by the first network element or server terminal and received by the first terminal, or initially sent by the first terminal and received by the first network element or server.

[0176] In some embodiments, the second message may be initiated by the second terminal and received by the first terminal, or the first terminal may further transparently transmit the received second message to the first network element or server terminal, in which case the first network element or server terminal may receive the second message transparently transmitted by the first terminal. Alternatively, the second message may be initiated by the first network element or server terminal and received by the first terminal, in which case the first terminal may further transparently transmit the received second message to the second terminal, in which case the second terminal may receive the second message transparently transmitted by the first terminal.

[0177] In some embodiments, the third message may be a message reconstructed by the first terminal with reference to the second message for exchanging service information with the second terminal. For example, the first terminal may construct the third message with reference to the second message sent by the second terminal, and send the constructed third message to the first network element or server terminal. Alternatively, the first terminal may construct the third message with reference to the second message sent by the first network element or server terminal, and send the constructed third message to the second terminal.

[0178] In the various possible embodiments described above, in different processes, the first message may contain the same or different information, the second message may contain the same or different information, and the third message may contain the same or different information. When the first message is initiated by different execution entities, the first message may contain the same or different information, when the second message is initiated by different execution entities, the second message may contain the same or different information, when the third message is initiated by different execution entities, the third message may contain the same or different information, when the first message is received by different execution entities, the first message may contain the same or different information, when the second message is received by different execution entities, the second message may contain the same or different information, when the third message is received by different execution entities, the third message may contain the same or different information, the third message constructed by the first terminal based on the second message sent by the second terminal, and the third message constructed by the first terminal based on the second message sent by the first network element or server terminal may also contain the same or different information, and there is no limitation on this.

[0179] The above-mentioned different processes may be, for example, different business processes, or different steps or sub-processes in a business process, and there is no limitation to this.

[0180] FIG4A is an interactive diagram of an information interaction method according to another embodiment of the present disclosure. As shown in FIG4A , the present disclosure embodiment relates to an information interaction method that can be used in a first network element or a server terminal. The above method includes:

[0181] Step S4101, sending first information to the first terminal, wherein the first information is used to exchange business information of the first terminal with the first terminal; the first information is also used to instruct the first terminal to exchange business information with at least one second terminal, or to instruct the first terminal to transparently transmit business information to at least one second terminal.

[0182] The information interaction method involved in the embodiment of the present disclosure may include step S4101. For example, step S4101 may be implemented as an independent embodiment, but is not limited thereto.

[0183] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0184] FIG4B is an interactive diagram of an information interaction method according to another embodiment of the present disclosure. As shown in FIG4B , the present disclosure embodiment relates to an information interaction method, which can be used in a first network element or a server terminal. The above method includes:

[0185] Step S4201, sending first information to the first terminal, wherein the first information is used to exchange business information of the first terminal with the first terminal; the first information is also used to instruct the first terminal to exchange business information with at least one second terminal, or to instruct the first terminal to transparently transmit business information to at least one second terminal.

[0186] Step S4202: receiving service information of the first terminal sent by the first terminal, where the service information of the first terminal is included in a first message, and the first message is used to exchange the service information of the first terminal.

[0187] Step S4203: Receive service information of at least one second terminal sent by the first terminal, wherein the service information of the second terminal is included in the second message or the third message, the third message is used to exchange the service information of the second terminal, and the third message is generated by the first terminal according to the second message.

[0188] The information interaction method involved in the embodiments of the present disclosure may include at least one of steps S4201 to S4203. For example, step S4201 can be implemented as an independent embodiment, step S4202 can be implemented as an independent embodiment, and so on, but the present disclosure is not limited thereto. Steps S4201+S4202 can be implemented as independent embodiments, but the present disclosure is not limited thereto.

[0189] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0190] FIG4C is an interactive diagram of an information interaction method according to another embodiment of the present disclosure. As shown in FIG4C , the present disclosure embodiment relates to an information interaction method that can be used in a first network element or a server terminal. The above method includes:

[0191] Step S4301: Receive second information sent by the first terminal, where the second information is used to request service implementation.

[0192] Step S4302: Send first information to the first terminal based on the second information, wherein the first information is used to interact with the first terminal's business information; the first information is also used to instruct the first terminal to interact with at least one second terminal for business information, or to instruct the first terminal to transparently transmit business information to at least one second terminal.

[0193] The information interaction method involved in the embodiments of the present disclosure may include at least one of steps S4301 and S4302. For example, step S4301 can be implemented as an independent embodiment, step S4302 can be implemented as an independent embodiment, and so on, but the present disclosure is not limited thereto. Steps S4301 and S4302 can be implemented as independent embodiments, but the present disclosure is not limited thereto.

[0194] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0195] FIG5A is an interactive diagram of an information interaction method according to another embodiment of the present disclosure. As shown in FIG5A , the present disclosure embodiment relates to an information interaction method that can be used in a second terminal. The above method includes:

[0196] Step S5101: Send fourth information to the first terminal, wherein the fourth information is used to instruct the first terminal to exchange service information of the second terminal with the first network element or server terminal, or to instruct the first terminal to transparently transmit service information of the second terminal to the first network element or server terminal.

[0197] The information interaction method involved in the embodiment of the present disclosure may include step S5101. For example, step S5101 may be implemented as an independent embodiment, but is not limited thereto.

[0198] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0199] FIG5B is an interactive diagram of an information interaction method according to another embodiment of the present disclosure. As shown in FIG5B , the present disclosure embodiment relates to an information interaction method that can be used in a second terminal. The above method includes:

[0200] Step S5201: Send fourth information to the first terminal, wherein the fourth information is used to instruct the first terminal to exchange service information of the second terminal with the first network element or server terminal, or to instruct the first terminal to transparently transmit service information of the second terminal to the first network element or server terminal.

[0201] Step S5202: receiving service information of the second terminal sent by the first terminal, wherein the service information of the second terminal is included in the second message or the third message, the third message is used to exchange the service information of the second terminal, and the third message is generated by the first terminal according to the second message.

[0202] The information interaction method involved in the embodiments of the present disclosure may include at least one of steps S5201 and S5202. For example, step S5201 can be implemented as an independent embodiment, step S5202 can be implemented as an independent embodiment, and so on, but the present disclosure is not limited thereto. Steps S5201 and S5202 can be implemented as independent embodiments, but the present disclosure is not limited thereto.

[0203] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0204] FIG6A is an interactive diagram of an information interaction method according to another embodiment of the present disclosure. As shown in FIG6A , the present disclosure embodiment relates to an information interaction method that can be used in a first terminal. The above method includes:

[0205] Step S6101, receiving first information sent by a first network element or a server terminal, wherein the first information is used to exchange business information of the first terminal with the first terminal; the first information is also used to instruct the first terminal to exchange business information with at least one second terminal, or to instruct the first terminal to transparently transmit business information to at least one second terminal.

[0206] The information interaction method involved in the embodiment of the present disclosure may include step S6101. For example, step S6101 may be implemented as an independent embodiment, but is not limited thereto.

[0207] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0208] FIG6B is an interactive diagram of an information interaction method according to another embodiment of the present disclosure. As shown in FIG6B , the present disclosure embodiment relates to an information interaction method that can be used in a first terminal. The above method includes:

[0209] Step S6201: Receive first information sent by a first network element or a server terminal, wherein the first information is used to exchange service information of the first terminal with the first terminal, and the first information is also used to instruct the first terminal to exchange service information with at least one second terminal.

[0210] Step S6202: Generate a third message associated with the second terminal based on the first information, wherein the third message is used to exchange service information of the second terminal.

[0211] Step S6203: Send fifth information to the second terminal, where the fifth information includes: the third message.

[0212] Step S6204: Receive service information of the second terminal sent by the second terminal.

[0213] Step S6205: Send service information of at least one second terminal to the first network element or the server terminal, wherein the service information of the second terminal is included in a third message.

[0214] The information interaction method involved in the embodiments of the present disclosure may include at least one of steps S6201 to S6205. For example, step S6201 can be implemented as an independent embodiment, step S6202 can be implemented as an independent embodiment, and so on, but the present disclosure is not limited thereto. Steps S6201+S6202 can be implemented as independent embodiments, but the present disclosure is not limited thereto.

[0215] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0216] FIG6C is an interactive diagram of an information interaction method according to another embodiment of the present disclosure. As shown in FIG6C , the present disclosure embodiment relates to an information interaction method that can be used in a first terminal. The above method includes:

[0217] Step S6301: Receive first information sent by a first network element or a server terminal, wherein the first information is used to exchange service information of the first terminal with the first terminal, and the first information is also used to instruct the first terminal to transparently transmit service information to at least one second terminal.

[0218] Step S6302: Send fifth information to the second terminal, where the fifth information includes: a second message.

[0219] Step S6303: Receive service information of the second terminal sent by the second terminal.

[0220] Step S6304: Send service information of at least one second terminal to the first network element or the server terminal, wherein the service information of the second terminal is included in a second message.

[0221] The information interaction method involved in the embodiments of the present disclosure may include at least one of steps S6301 to S6304. For example, step S6301 can be implemented as an independent embodiment, step S6302 can be implemented as an independent embodiment, and so on, but the present disclosure is not limited thereto. Steps S6301+S6302 can be implemented as independent embodiments, but the present disclosure is not limited thereto.

[0222] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0223] FIG6D is an interactive diagram of an information interaction method according to another embodiment of the present disclosure. As shown in FIG6D , the present disclosure embodiment relates to an information interaction method that can be used in a first terminal. The above method includes:

[0224] Step S6401: Receive fourth information sent by the second terminal, wherein the fourth information is used to instruct the first terminal to exchange the service information of the second terminal with the first network element or server terminal, or to instruct the first terminal to transparently transmit the service information of the second terminal to the first network element or server terminal.

[0225] The information interaction method involved in the embodiment of the present disclosure may include step S6401. For example, step S6401 may be implemented as an independent embodiment, but is not limited thereto.

[0226] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0227] FIG6E is an interactive diagram of an information interaction method according to another embodiment of the present disclosure. As shown in FIG6E , the present disclosure embodiment relates to an information interaction method that can be used in a first terminal. The above method includes:

[0228] Step S6501: Receive fourth information sent by a second terminal, wherein the fourth information is used to instruct a first terminal to exchange service information of the second terminal with a first network element or a server terminal.

[0229] Step S6502: Generate a third message associated with the second terminal according to the fourth information, wherein the third message is used to exchange service information of the second terminal.

[0230] Step S6503: Send third information to the first network element or the server terminal, where the third information includes: a third message.

[0231] Step S6504: Receive service information of the second terminal sent by the first network element or the server terminal.

[0232] Step S6505: Send the service information of the second terminal to the second terminal, wherein the service information of the second terminal is included in the third message.

[0233] The information interaction method involved in the embodiments of the present disclosure may include at least one of steps S6501 to S6505. For example, step S6501 can be implemented as an independent embodiment, step S6502 can be implemented as an independent embodiment, and so on, but the present disclosure is not limited thereto. Steps S6501+S6502 can be implemented as independent embodiments, but the present disclosure is not limited thereto.

[0234] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0235] FIG6F is an interactive diagram of an information interaction method according to another embodiment of the present disclosure. As shown in FIG6F, the present disclosure embodiment relates to an information interaction method that can be used in a first terminal. The above method includes:

[0236] Step S6601: Receive fourth information sent by the second terminal, where the fourth information is used to instruct the first terminal to transparently transmit service information of the second terminal to the first network element or server terminal.

[0237] Step S6602: Send third information to the first network element or the server terminal, where the third information includes: a second message.

[0238] Step S6603: Receive service information of the second terminal sent by the first network element or the server terminal.

[0239] Step S6604: Send the service information of the second terminal to the second terminal, where the service information of the second terminal is included in the second message.

[0240] The information interaction method involved in the embodiments of the present disclosure may include at least one of steps S6601 to S6604. For example, step S6601 can be implemented as an independent embodiment, step S6602 can be implemented as an independent embodiment, and so on, but the present disclosure is not limited thereto. Steps S6601+S6602 can be implemented as independent embodiments, but the present disclosure is not limited thereto.

[0241] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0242] FIG7A is an interactive diagram of an information interaction method according to another embodiment of the present disclosure. As shown in FIG7A , the present disclosure embodiment relates to an information interaction method that can be used in a communication system. The above method includes:

[0243] In step S7101, a first network element or a server terminal sends first information to a first terminal, wherein the first information is used to exchange business information of the first terminal with the first terminal; the first information is also used to instruct the first terminal to exchange business information with at least one second terminal, or to instruct the first terminal to transparently transmit business information to at least one second terminal.

[0244] Step S7102: The first terminal receives first information sent by the first network element or the server terminal.

[0245] In step S7103, the first terminal generates a third message based on the second message in the first information and sends the third message to the second terminal, wherein the third message is used for the first terminal to interact with the business information of the second terminal associated with the first terminal, and the second message is used to interact with the business information of the second terminal through the first terminal, or the first terminal transparently transmits the second message in the first information to the second terminal, wherein the second message is used to transparently transmit the business information of the second terminal through the first terminal.

[0246] Step S7104: The second terminal sends its service information to the first terminal.

[0247] The information interaction method involved in the embodiments of the present disclosure may include at least one of steps S7101 to S7104. For example, step S7101 can be implemented as an independent embodiment, step S7102 can be implemented as an independent embodiment, and so on, but the present disclosure is not limited thereto. Steps S7101+S7102 can be implemented as independent embodiments, but the present disclosure is not limited thereto.

[0248] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0249] FIG7B is an interactive diagram of an information interaction method according to another embodiment of the present disclosure. As shown in FIG7B , the present disclosure embodiment relates to an information interaction method that can be used in a communication system. The above method includes:

[0250] In step S7201, the second terminal sends fourth information to the first terminal, wherein the fourth information is used to instruct the first terminal to exchange the service information of the second terminal with the first network element or server terminal, or to instruct the first terminal to transparently transmit the service information of the second terminal to the first network element or server terminal.

[0251] Step S7202: The first terminal receives fourth information sent by the second terminal.

[0252] In step S7203, the first terminal generates a third message based on the second message in the fourth information, and sends the third message to the first network element or server terminal, wherein the third message is used to interact with the business information of the second terminal associated with the first terminal, and the second message is used to interact with the business information of the second terminal through the first terminal, or the first terminal transparently transmits the second message in the fourth information to the first network element or server terminal, wherein the second message is used to transparently transmit the business information of the second terminal through the first terminal.

[0253] Step S7204: The first network element or server terminal sends the service information of the second terminal to the first terminal.

[0254] The information interaction method involved in the embodiments of the present disclosure may include at least one of steps S7201 to S7204. For example, step S7201 may be implemented as an independent embodiment, step S7202 may be implemented as an independent embodiment, and so on, but the present disclosure is not limited thereto. Steps S7201+S7202 may be implemented as independent embodiments, but the present disclosure is not limited thereto.

[0255] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0256] An embodiment of the present disclosure provides an information interaction method to improve the exchange of SL positioning service information (an optional example of service information) between a first network element (e.g., an LMF network element) and related terminals, which may include: the LMF network element requests the transmission of SL positioning service information, such as ranging / SL positioning capability, or ranging / SL positioning measurement data / results, or the LMF network element provides auxiliary data of all terminals related to the SL positioning service. The UE provides ranging / SL positioning capability, or ranging / SL positioning measurement data / results, or the UE exchanges auxiliary data of all terminals related to the SL positioning service.

[0257] In this embodiment, the service information is SL positioning service information, and the first network element is an LMF network element, which is not limited to this. The embodiment of the present disclosure provides an improved method for exchanging SL positioning service information between an LMF network element and a related terminal, including:

[0258] In the present embodiment, the method for exchanging SL positioning service information between the LMF network element and the relevant terminals includes: the LMF network element and the terminal can exchange the SL positioning service information of all terminals through the end-to-end SLPP container of each relevant terminal (transparent to the terminal connected to the LMF network element); or the LMF network element or the terminal can request to exchange the SL positioning service information of all terminals, and the terminal connected to the LMF network element (for example, UE1) initiates the SLPP message interaction process with all other terminals or LMF network elements to exchange SL positioning service information. The terminal connected to the LMF network element is a terminal that establishes a connection with the network and exchanges messages with the LMF through the AMF, such as UE1. Other UEs can be marked as UEx, that is, other UEs in the service except UE1.

[0259] If the LMF network element and the terminal request to exchange the SL positioning service information of all terminals through the end-to-end SLPP container of each terminal (transparent to UE1), the following contents may be included:

[0260] The SL positioning service information for UEx sent by the LMF network element may be constructed in the LMF network element, and the request message may be transparently transmitted to other UExs through UE1.

[0261] The SL positioning service information for UEx sent by UEx is constructed in each terminal and can be transparently transmitted to the LMF network element through UE1.

[0262] If the LMF network element and UEx exchange all SL positioning service information of UEx, and the SLPP message interaction process between UE1 and UEx or LMF network element is initiated (not transparently transmitted), the following contents may be included:

[0263] The SLPP container or SLPP embedded message from the LMF network element or terminal is terminated at the terminal (UE1) connected to the LMF network element.

[0264] If the LMF network element sends SL positioning service information for UEx, UE1 initiates the SLPP message interaction process with UEx to obtain the SL positioning service information of each terminal or provide SL positioning service information to each terminal. UE1 constructs and packages the SL positioning service information of the relevant terminals and sends it to the LMF network element as needed.

[0265] If the terminal sends SL positioning service information for UEx, UE1 initiates the SLPP message interaction process between the LMF network element to obtain the SL positioning service information of each terminal or provide the SL positioning service information of each terminal. UE1 constructs and packages the SL positioning service information of the relevant terminals and sends it to the terminals as needed.

[0266] The SL positioning service information of all terminals exchanged between the LMF network element and the terminal includes:

[0267] The LMF network element requests SL positioning capabilities, or ranging / SL positioning measurement data / results, or the LMF network element provides assistance data related to the SL positioning service of all terminals.

[0268] The terminal provides SL positioning capabilities, ranging / SL positioning measurement data / results, or terminal interaction with auxiliary data related to SL positioning services.

[0269] The following is an exemplary introduction to the above method.

[0270] As shown in Figure 8A, Figure 8A is a schematic diagram of transmitting terminal capabilities in the SL-MO-LR process according to an embodiment of the present disclosure. Figure 8A may include UE1, UE2, ..., UEn (n is a positive integer), an AMF network element, an LMF network element, a Policy Control Function (PCF) network element, a GMLC network element, a Network Exposure Function (NEF) network element / Application Function (AF) network element, or an LCS client. In this embodiment, the information contained in the SLPP message received by UE-1 from UE 2 to UE n will be included in the SLPP container in the supplementary service message from UE-1 to the LMF network element or embedded in the SLPP message.

[0271] 1. Authorization of ranging / SL positioning services and issuance of policies and / or parameters.

[0272] In some embodiments, ranging / SL positioning service authorization for UE1 to UEn, as well as policy and / or parameter issuance process and signaling interaction may be completed in this step.

[0273] 2. Terminal discovery.

[0274] In some embodiments, upon triggering a service request (eg, received from an application layer), terminal discovery for ranging / SL positioning is performed, for example, including UE1 to UEn.

[0275] 3. Establish a secure link.

[0276] In some embodiments, a secure multicast or unicast link may be established between UE1 and UEn to implement information exchange between UE1 to UEn.

[0277] 4. Notification and verification of ranging / SL positioning.

[0278] In some embodiments, UE2 and UE2-UEn may communicate via PC5 to authorize ranging / SL positioning.

[0279] 5. Capabilities of switching terminals.

[0280] In some embodiments, SLPP in the communication protocol may be used to exchange ranging / SL positioning capabilities between UE1 and UE2-UEn based on the multicast and / or unicast link established in step 3.

[0281] 6. Decide to implement the SL-MO-LR process.

[0282] In some embodiments, based on the ranging / SL positioning capabilities of UE1 to UEn, the target terminal (eg, UE1) decides to perform the SL-MO-LR process.

[0283] 7.UE1 initiates a service request.

[0284] In some embodiments, if UE1 is in the CM-IDLE state, UE1 can trigger another UE to initiate a service request to establish a signaling connection with the AMF network element serving UE1.

[0285] 8. Send UL NAS TRANSPORT message (SL-MO-LR request message).

[0286] In some embodiments, the UL NAS TRANSPORT message represents an uplink non-access stratum transport message.

[0287] In some embodiments, UE1 may send a UL NAS TRANSPORT message to the LMF network element through the AMF network element, and the UL NAS TRANSPORT message includes a supplementary service SL-MO-LR request message. The SL-MO-LR request message may indicate other UE2 to UEn (for example, based on an application layer identifier (IDentifier, ID) indication), indicate any required auxiliary data, indicate whether position calculation assistance is required, and indicate whether the position result should be transmitted to the LCS client or AF network element. The SL-MO-LR request message may also include the identifier of the LCS client or AF network element. It may also include the address of the GMLC network element to support the LCS client or AF network element to connect to the GMLC network element through the address.

[0288] In some embodiments, the "service type" in the SL-MO-LR request message may include: a certain MO-LR service of the LCS client requested by the terminal. With the assistance of the position calculation of the LMF network element, the preferred type of ranging / SL positioning results (such as absolute position, relative position or distance and direction, speed and relative speed between UE pairs) and the required quality of service (QoS) are included. In addition, the SLPP container containing the ranging capabilities of UE2 to UEn obtained in step 5 may also be included. Or the SL-MO-LR request message may not include the SLPP container containing the ranging capabilities of UE2 to UEn. Instead, it includes indication information to indicate that the capabilities of all or part of UEs in UE2 to UEn are available to support the LMF network element to decide how to obtain the capabilities of UE2 to UEn. Optionally, the SL-MO-LR request message may also include a preferred request method for supporting the transmission of capabilities of UE2 to UEn. For example, the UE requests that UE1 not transmit transparently, or the LMF network element requests that UE1 transmit transparently.

[0289] 9. Send Nlmf_Location_DetermineLocation Request message.

[0290] In some embodiments, the AMF network element may select an LMF network element for serving UE1 (e.g., an LMF network element that supports ranging / SL positioning), and based on the information in the SL-MO-LR request message, initiate an Nlmf_Location_DetermineLocation service operation to the LMF network element. The service operation may include an LCS association identifier.

[0291] 10. Request capabilities from UE1 to UEn.

[0292] In some embodiments, the LMF network element may send a request to UE1 using a supplementary service message embedded in an SLPP container or an SLPP message specified in the communication protocol SLPP to exchange capabilities of UE1 to UEn.

[0293] In some embodiments, there are two ways to request the capabilities of UE1 to UEn:

[0294] The first method: Assume that UE1 exchanges the capabilities of UE2 to UEn. This method is determined by the LMF network element based on the information received in step 8 and / or the LMF local configuration information. The supplementary service message may include the following contents:

[0295] Embedded SLPP container or SLPP message for UE1 to request capabilities of UE1;

[0296] A list of application layer IDs of UE2 to UEn, used to indicate the capabilities of UE2 to UEn that need to be acquired;

[0297] The indication information is used to indicate the capabilities of all specified UEs to be obtained or the capabilities of each UE to be obtained.

[0298] In addition, if the LMF network element has obtained the capabilities of some UEs, the list and / or indication information can also be used to indicate the specific UE or specific UE list among UE2~UEn whose capabilities need to be obtained.

[0299] The supplementary service message may also include an embedded SLPP container or SLPP message requesting UE2 to UEm, where m is a positive integer, the number of n and m may be the same or different, and there is no restriction on the size relationship between n and m.

[0300] The second method: Assume that the LMF network element exchanges the capabilities of UE2 to UEn, that is, UE1 transparent transmission. This method is determined by the LMF network element based on the information received in step 8 and / or LMF local configuration information. The supplementary service message may include the following:

[0301] Embedded SLPP container or SLPP message for UE1 to request capabilities of UE1;

[0302] Embedded SLPP container or SLPP message for each UE among UE2 to UEn to request the capabilities of the corresponding UE.

[0303] In addition, if the LMF network element has obtained the capabilities of some UEs, the supplementary service message can include a specific UE list and an embedded SLPP container or SLPP message corresponding to each UE in the specific UE list to request the capabilities of the corresponding UE.

[0304] 11. Capabilities of responding to UE1 to UEn.

[0305] In some embodiments, UE1 may transmit the capabilities of UE1 to the LMF network element using a supplementary service message embedded in an SLPP container or an SLPP message specified in the communication protocol.

[0306] In some embodiments, if it is assumed that UE1 exchanges UE capabilities based on the request message received in step 10, that is, UE1 does not transparently transmit the capabilities, UE1 returns the required UE capabilities to the LMF network element according to the request message of step 10. If the UE capabilities are not obtained, UE1 initiates an SLPP capability transmission process with the corresponding UE to obtain the SL positioning capabilities of the corresponding UE. In this case, the SLPP container or SLPP message received by UE2 to UEn is constructed by UE1. If the request message contains an embedded SLPP container or SLPP message for requesting the capabilities of UE2 to UEn, the embedded SLPP container or SLPP message terminates at UE1, and UE1 can start a new SLPP container or SLPP message to UE2 to UEn based on the embedded SLPP container or SLPP message received from the LMF network element. A separate embedded SLPP container or SLPP message can be used for each UE to provide the capabilities of the corresponding UE.

[0307] In some embodiments, if the capabilities of UE2 to UEn are exchanged by the LMF network element in accordance with the requirements of step 10, that is, the UE1 transparently transmits the capabilities, then UE1 transparently transmits the SLPP container or SLPP message constructed by the LMF network element to each UE in UE2 to UEn, and each UE that receives the SLPP container or SLPP message transparently transmits the capabilities to the LMF network element based on the corresponding SLPP container or SLPP message via UE1. Optionally, in order to instruct UE1 to transparently transmit the SLPP container or SLPP message, it may also include an indication of transparently transmitting the SLPP container or SLPP message to the LMF network element, and the indication may also include a location session ID, which may be the routing information or LCS association identifier received as additional information in the NAS message received by UE1 in step 10. In addition, the capabilities of the corresponding UE are transmitted in each UE's separate embedded SLPP container or SLPP message.

[0308] In some embodiments, after checking the capabilities of the UE, the LMF network element may down-select at least one UE for the SL positioning operation (i.e., down-select the UE list).

[0309] In some embodiments, different embedded SLPP containers may be distinguished by including corresponding application layer IDs in the supplementary service message.

[0310] 12. Other steps of the SL positioning and 5GC-assisted terminal positioning process.

[0311] 13. Send DL NAS TRANSPORT message (SL-MO-LR response message).

[0312] In some embodiments, the DL NAS TRANSPORT message refers to a downlink non-access stratum transport message.

[0313] In some embodiments, the LMF network element sends a DL NAS TRANSPORT message to UE1 through the AMF network element. The DL NAS TRANSPORT message may include an SL-MO-LR response message and may also include a ranging / SL positioning result.

[0314] As shown in Figure 8B, Figure 8B is a schematic diagram of transmitting terminal capabilities in the SL-MT-LR process according to an embodiment of the present disclosure. Figure 8B may include UE1, UE2, ..., UEn (n is a positive integer), AMF network element, LMF network element, GMLC network element, Unified Data Management (UDM) network element, Next Generation Radio Access Network (NG-RAN), NEF network element / AF network element, or LCS client.

[0315] 1. Initiate and decide to execute the SL-MT-LR process.

[0316] 2. Call the Namf_Communication_N1N2MessageTransfer service (SL-MT-LR request message, correlation ID).

[0317] In some embodiments, the LMF uses the Namf_Communication_N1N2MessageTransfer service operation to send the SL-MT-LR request message as a supplementary service message to the AMF network element providing the service, and the session ID parameter is set to the LCS association identifier (e.g., association ID).

[0318] In some embodiments, the SL-MT-LR request message may include the application layer ID of each UE in UE2 to UEn, the type of positioning result required (e.g., relative position, distance and / or direction), and the SL reference terminal (when determining relative position).

[0319] In some embodiments, if the LMF network element decides that the target terminal or the LMF network element selects the positioning terminal, the SL-MT-LR request message may include an indication that the target terminal or the LMF network element selects the positioning terminal.

[0320] In some embodiments, the LMF network element may use a supplementary service message embedded in an SLPP container or SLPP message specified in the communication protocol to send an SL-MT-LR request message to UE1 to obtain the capabilities of UE1 to UEn. Since UE2 to UEn have not yet been discovered and the capabilities of the UEs to be requested have not yet been determined, the request for UE capabilities can be completed in the following manner. The SL-MT-LR request message may include:

[0321] Embedded SLPP container or SLPP message for UE1 to request capabilities of UE1;

[0322] Indicates that the capabilities of all positioning terminals selected by the target terminal need to be acquired;

[0323] Indicates that the capabilities of all discovered endpoints need to be obtained.

[0324] In addition, if the LMF network element has obtained the capabilities of some UEs, a specific UE list may be included in the SL-MT-LR request message to indicate that the capabilities of a specific UE or UEs in a UE list need to be obtained, or to indicate a UE or UE list for which the capabilities of the UE have been obtained.

[0325] 3. Send DL NAS TRANSPORT message (SL-MT-LR request message, routing ID).

[0326] In some embodiments, the AMF network element may use the DL NAS TRANSPORT message to transparently transmit the SL-MT-LR request message and the routing identifier (routing ID) corresponding to the LCS association identifier to UE1.

[0327] 4. UE1 discovers UE2 to UEn.

[0328] In some embodiments, if UE2-UEn has not been discovered, UE1 attempts to discover UE2-UEn using the application layer IDs of UE2-UEn.

[0329] 5. UE1 obtains the capabilities of the discovered UE.

[0330] In some embodiments, if UE1 has not yet obtained the SL positioning capability of the discovered terminal, it may obtain the SL positioning capability of the discovered terminal through SLPP.

[0331] 6. Send UL NAS TRANSPORT message (SL-MT-LR response message, routing ID).

[0332] In some embodiments, UE1 returns a supplementary service SL-MT-LR response message to the serving AMF network element in a UL NAS TRANSPORT message, and includes the routing identifier (routing ID) received in step 3 in the UL NAS TRANSPORT message. The supplementary service message may include: an SLPP container including the ranging capability of the UE.

[0333] In some embodiments, the SL-MT-LR response message may indicate that some UEs among UE2 to UEn have been discovered, the SL positioning capability of the discovered UEs, or the SL positioning capability of the selected UEs.

[0334] In some embodiments, if UE1 receives an indication from the LMF network element in step 2 to select a positioning terminal, the SL-MT-LR response message may include information about all discovered positioning terminals, and the LMF selects a positioning terminal based on the information about all discovered positioning terminals. If UE1 receives an indication in the SL-MT-LR request message that the target terminal selects a positioning terminal, UE1 selects a positioning terminal, and the SL-MT-LR response message may include the application layer ID of the selected positioning terminal.

[0335] 7. Send Namf_Communication_N1MessageNotify message (SL-MT-LR response message, association ID).

[0336] In some embodiments, the AMF network element may transparently transmit the SL-MT-LR response message to the LMF network element indicated by the routing identifier received in step 6, and include an LCS association identifier corresponding to the routing identifier.

[0337] 8. Other steps of ranging / SL positioning based on UE1~UEn.

[0338] In some embodiments, UE1 and other discovered UEs can perform ranging / SL positioning based on the SL-MO-LR process of steps 10 to 12 in the above embodiments. The difference from the above embodiments is that the position measurement data or results of the ranging / SL positioning can be returned to the LMF network element, and the LMF network element indicates to UE1 whether the position result of the ranging / SL positioning is calculated by the LMF network element or by UE1. For some other undiscovered UEs among UE2~UEn, the LMF network element interacts with the GMLC network element to start the 5GC-MT-LR process of UE2~UEn, obtain its absolute position, and calculate the relative position, distance and / or direction related to the UE.

[0339] 9. Position response of the SL-MT-LR process.

[0340] In some embodiments, the LMF network element returns the SL positioning / ranging results to the LCS client or AF network element through the AMF network element and the GMLC network element.

[0341] It should be noted that, in the above embodiment, the steps for transmitting the terminal capability, service auxiliary data and location information may be executed in any order, or may be executed in a superimposed manner.

[0342] As shown in Table 1 below, Table 1 shows an example of transmitting ranging / SL positioning information in the SL positioning process. In various embodiments of the present disclosure, in addition to exchanging ranging / SL positioning capabilities, SLPP also supports exchanging ranging / SL positioning assistance data, and exchanging ranging / SL positioning measurement data / results in the ranging / SL positioning process, wherein the assistance data is provided by the LMF network element, or requested by the UE and provided by the LMF network element, and the measurement data / results are provided by the UE, or requested by the LMF network element and provided by the UE. The information listed in Table 1 can also be exchanged between the LMF network element and the UE in a transparent or non-transparent manner as shown in the above embodiments by UE1.

[0343] Table 1

[0344] In the embodiment of the present disclosure, while supporting the LMF network element to request the transmission of SL positioning service information of all terminals related to the SL positioning service to the LMF network element, a method is provided for the LMF network element to request and receive SL positioning service information of all relevant terminals, which can effectively implement ranging / SL positioning services based on the received SL positioning service information of all relevant terminals.

[0345] The embodiments of the present disclosure further provide an apparatus for implementing any of the above methods. For example, an apparatus is provided, comprising units or modules for implementing each step performed by a terminal in any of the above methods. For another example, another apparatus is provided, comprising units or modules for implementing each step performed by a first network element (e.g., an LMF network element) in any of the above methods.

[0346] It should be understood that the division of the various units or modules in the above device is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated. In addition, the units or modules in the device may be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), which realizes the functions of some or all of the above units or modules by designing the logical relationship of the components in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be realized by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by configuring the configuration file, thereby realizing the functions of some or all of the above units or modules. All units or modules of the above devices can be realized in the form of software called by the processor, or in the form of hardware circuits, or in part by the form of software called by the processor, and the rest by hardware circuits.

[0347] In the embodiment of the present disclosure, the processor is a circuit with signal processing capability. In one implementation, the processor can be a circuit with instruction reading and execution capability, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP); in another implementation, the processor can implement certain functions through the logical relationship of the hardware circuit, and the logical relationship of the above hardware circuit is fixed or reconfigurable, such as a hardware circuit implemented by a processor as an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and implementing the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.

[0348] FIG9A is a schematic diagram of the structure of the first network element proposed in an embodiment of the present disclosure. As shown in FIG9A , the first network element 9100 may include: at least one of a transceiver module 9101 and a processing module 9102. The first network element 9100 may include:

[0349] The transceiver module 9101 is used to send first information to the first terminal, wherein the first information is used to exchange business information of the first terminal with the first terminal; the first information is also used to instruct the first terminal to exchange business information with at least one second terminal, or to instruct the first terminal to transparently transmit business information to at least one second terminal.

[0350] FIG9B is a schematic diagram of the structure of a terminal proposed in an embodiment of the present disclosure. As shown in FIG9B , the terminal 9200 may include at least one of a transceiver module 9201 and a processing module 9202. The terminal 9200 may include:

[0351] The transceiver module 9201 is used to send first information to the first terminal, wherein the first information is used to exchange business information of the first terminal with the first terminal; the first information is also used to indicate the first terminal to exchange business information with at least one second terminal, or to indicate the first terminal to transparently transmit business information to at least one second terminal; or, to send fourth information to the first terminal, wherein the fourth information is used to indicate the first terminal to exchange business information of the second terminal with the first network element or server terminal, or to indicate the first terminal to transparently transmit business information of the second terminal to the first network element or server terminal; or, to receive the first information sent by the first network element or server terminal; or, to receive the fourth information sent by the second terminal.

[0352] In some embodiments, the transceiver module may include a transmitting module and / or a receiving module, and the transmitting module and the receiving module may be separate or integrated. Optionally, the transceiver module may be interchangeable with the transceiver.

[0353] In some embodiments, the processing module can be a single module or can include multiple submodules. Optionally, the multiple submodules each execute all or part of the steps required to be executed by the processing module. Optionally, the processing module can be interchangeable with the processor.

[0354] Figure 10A is a schematic diagram of the structure of a communication device proposed in an embodiment of the present disclosure. Communication device 10100 can be a terminal, a network device, a chip, a chip system, or a processor that supports a terminal implementing any of the above methods, or a chip, a chip system, or a processor that supports a network device implementing any of the above methods. Communication device 10100 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.

[0355] As shown in FIG10A , a communication device 10100 includes one or more processors 10101. Processor 10101 may be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processing unit may be used to control a communication device (e.g., a base station, a baseband chip, a terminal device, a terminal device chip, a DU or CU, etc.), execute programs, and process program data. The communication device 10100 is used to perform any of the above methods.

[0356] In some embodiments, the communication device 10100 further includes one or more memories 10102 for storing instructions. Optionally, all or part of the memory 10102 may be located outside the communication device 10100.

[0357] In some embodiments, the communication device 10100 further includes one or more transceivers 10103. When the communication device 10100 includes one or more transceivers 10103, the transceiver 10103 performs at least one of the communication steps of sending and / or receiving in the above method, and the processor 10101 performs the other steps.

[0358] In some embodiments, a transceiver may include a receiver and / or a transmitter. The receiver and transmitter may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, and transceiver circuit may be used interchangeably; the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be used interchangeably; and the terms receiver, receiving unit, receiver, and receiving circuit may be used interchangeably.

[0359] In some embodiments, the communication device 10100 may include one or more interface circuits 10104. Optionally, the interface circuit 10104 is connected to the memory 10102. The interface circuit 10104 may be configured to receive signals from the memory 10102 or other devices, or to send signals to the memory 10102 or other devices. For example, the interface circuit 10104 may read instructions stored in the memory 10102 and send the instructions to the processor 10101.

[0360] The communication device 10100 described in the above embodiments may be a terminal, a network device, or a third entity, but the scope of the communication device 10100 described in the present disclosure is not limited thereto, and the structure of the communication device 10100 may not be limited by FIG. 10A . The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data or programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0361] FIG10B is a schematic diagram of the structure of a chip according to an embodiment of the present disclosure. If the communication device 10100 can be a chip or a chip system, reference can be made to the schematic diagram of the structure of the chip 10200 shown in FIG10B , but the present disclosure is not limited thereto.

[0362] Chip 10200 includes one or more processors 10201, and chip 10200 is used to execute any of the above methods.

[0363] In some embodiments, chip 10200 further includes one or more interface circuits 10202. Optionally, interface circuit 10202 is connected to memory 10203. Interface circuit 10202 can be used to receive signals from memory 10203 or other devices, or to send signals to memory 10203 or other devices. For example, interface circuit 10202 can read instructions stored in memory 10203 and send the instructions to processor 10201.

[0364] In some embodiments, interface circuit 10202 performs at least one of the communication steps, such as sending and / or receiving, in the above-described method, while processor 10201 performs the other steps. In some embodiments, terms such as interface circuit, interface, transceiver pin, and transceiver are interchangeable. In some embodiments, chip 10200 further includes one or more memories 10203 for storing instructions. Optionally, all or part of memory 10203 may be located external to chip 10200.

[0365] The present disclosure also provides a storage medium having instructions stored thereon. When the instructions are executed on the communication device 10100, the communication device 10100 is caused to execute any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited thereto and may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited thereto and may also be a transient storage medium.

[0366] The present disclosure also provides a program product, which, when executed by the communication device 10100, enables the communication device 10100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0367] The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any one of the above methods.

[0368] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented using software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present disclosure are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer program can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a high-density digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0369] Those skilled in the art will appreciate that the units and algorithmic steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented using electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this disclosure.

[0370] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0371] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. An information interaction method, characterized in that Performed by a first network element or a server terminal, the method includes: Sending first information to a first terminal, where the first information is used to interact with the first terminal about the service information of the first terminal; the first information is further used to instruct the first terminal to interact with at least one second terminal about service information, or to instruct the first terminal to transparently transmit service information to at least one second terminal.

2. The method according to claim 1, characterized in that, The service information includes at least one of the following: Terminal capabilities; Service auxiliary data; Service measurement results; Service-related measurement results.

3. The method according to any one of claims 1-2, characterized in that, The method further includes: Receiving the service information of the first terminal sent by the first terminal, or providing the service information of the first terminal to the first terminal, where the service information of the first terminal is included in a first message, and the first message is used to interact with the first terminal about the service information.

4. The method according to claim 3, wherein The first information includes at least one of the following: A first message, where the first message is used to interact with the first terminal about the service information; At least one second terminal information, where the second terminal information is used to describe the second terminal and to instruct the first terminal to interact with the corresponding second terminal about service information; A second terminal information list, where the second terminal information list includes: the at least one second terminal information; A first indication information, where the first indication information is used to instruct the first terminal to interact with the at least one second terminal about service information; At least one second message, where the second message is associated with a second terminal, and the second message is used to interact with the second terminal about the service information through the first terminal.

5. The method according to claim 3, wherein The first information includes at least one of the following: A first message, where the first message is used to interact with the first terminal about the service information; At least one second message, where the second message is associated with a second terminal, and the second message is used to transparently transmit the service information of the second terminal through the first terminal; A second indication information, where the second indication information is used to instruct the first terminal to transparently transmit the second message.

6. The method according to any one of claims 4-5, characterized in that, The method further includes: Receiving the service information of at least one second terminal sent by the first terminal, where the service information of the second terminal is included in a second message or a third message, and the third message is used to interact with the second terminal about the service information, and the third message is generated by the first terminal according to the second message.

7. The method according to any one of claims 1 to 6, characterized in that, The sending the first information to the first terminal includes: Receiving second information sent by the first terminal, where the second information is used to request to implement a service; According to the second information, sending the first information to the first terminal.

8. The method according to claim 7, wherein The second information includes at least one of the following: The service information of at least one second terminal; A third indication information, where the third indication information indicates that the service information of the at least one second terminal has been obtained; A fourth indication information, where the fourth indication information indicates the preferred interaction method for the service information of the second terminal.

9. The method according to any one of claims 1-8, characterized in that, The first information further includes at least one of the following: A first message, where the first message is used to interact with the first terminal about the service information; The fifth indication information, where the fifth indication information is used to indicate that the first terminal selects a second terminal or a first network element selects a second terminal; The sixth indication information, where the sixth indication information is used to indicate obtaining service information of the second terminal selected by the first terminal; The seventh indication information, where the seventh indication information is used to indicate obtaining service information of the second terminal discovered by the first terminal.

10. The method according to any one of claims 1 to 9, characterized in that, The method further includes any one of the following: Receiving at least one second terminal information selected or at least one second terminal information discovered sent by the first terminal; Receiving a second terminal information list sent by the first terminal, where the second terminal information list includes: at least one second terminal information selected or at least one second terminal information discovered.

11. The method according to any one of claims 1-3, characterized in that, The method further includes: Receiving third information sent by the first terminal, where the third information includes: a second message or a third message, the third message is used to interact service information of the second terminal, and the third message is generated by the first terminal according to the second message; Sending service information of the second terminal to the first terminal.

12. The method according to any one of claims 1-11, characterized in that, The interaction mode of the service information of the second terminal includes any one of the following: The first interaction mode, where the first interaction mode is a mode in which the first terminal initiates a request or a mode in which the first terminal does not transparently transmit; The second interaction mode, where the second interaction mode is a mode in which the first network element or the server terminal initiates a request or a mode in which the first terminal transparently transmits.

13. The method according to any one of claims 1 to 12, characterized in that, The interaction mode of the service information of the second terminal is determined based on at least one of the following: The indication information of the first terminal; The interaction capability of the first terminal; The configuration information of the first network element; The configuration information of the server terminal.

14. The method according to any one of claims 1 to 13, characterized in that, The first message is used to interact service information of the first terminal, the second message is used to transparently transmit service information of the second terminal through the first terminal, or used to interact service information of the second terminal through the first terminal; where, The first message and the second message satisfy at least one of the following: The second terminal information is inside or outside the second message; The type of the first message and the type of the second message are the same or different; The first message and the second message are in the same message; The first payload container type of the first message and the second payload container type of the second message are the same or different.

15. An information interaction method, characterized in that Executed by the second terminal, the method includes: Sending fourth information to the first terminal, where the fourth information is used to indicate that the first terminal interacts service information of the second terminal with the first network element or the server terminal, or indicates that the first terminal transparently transmits service information of the second terminal to the first network element or the server terminal.

16. The method according to claim 15, wherein The service information includes at least one of the following: Terminal capability; Service auxiliary data; Service measurement result; Service correlation measurement result.

17. The method according to any one of claims 15-16, characterized in that, The fourth information includes at least one of the following: Second terminal information, where the second terminal information is used to describe the second terminal and indicate that the first terminal interacts service information of the corresponding second terminal; The first indication information, wherein the first indication information is used to indicate that the first terminal interacts with the service information of the second terminal; The second message, wherein the second message is associated with the second terminal, and the second message is used to interact with the service information of the second terminal through the first terminal.

18. The method according to any one of claims 15-16, characterized in that, The fourth information includes at least one of the following: The second terminal information, wherein the second terminal information is used to describe the second terminal and indicate that the first terminal transparently transmits the service information of the corresponding second terminal; The second message, wherein the second message is associated with the second terminal, and the second message is used to transparently transmit the service information of the second terminal through the first terminal; The second indication information, wherein the second indication information is used to indicate that the first terminal transparently transmits the second message.

19. The method according to any one of claims 15-18, characterized in that, The method further includes: Receiving the service information of the second terminal sent by the first terminal, wherein the service information of the second terminal is included in the second message or the third message, the third message is used to interact with the service information of the second terminal, and the third message is generated by the first terminal according to the second message.

20. The method according to any one of claims 15-16, characterized in that, The method further includes: Receiving the fifth information sent by the first terminal, wherein the fifth information includes: the second message or the third message.

21. The method according to any one of claims 15-20, characterized in that, The method further includes: Providing the service information of the second terminal to the first terminal.

22. An information interaction method, characterized in that, Executed by a first terminal, the method includes: Receiving the first information sent by a first network element or a server terminal, wherein the first information is used to interact with the service information of the first terminal with the first terminal; the first information is further used to indicate that the first terminal interacts with at least one second terminal for service information, or indicate that the first terminal transparently transmits service information to at least one second terminal.

23. The method according to claim 22, wherein The service information includes at least one of the following: Terminal capabilities; Service auxiliary data; Service measurement results; Service-related measurement results.

24. The method according to any one of claims 22-23, characterized in that, The method further includes: Sending the service information of the first terminal to the first network element or the server terminal, or receiving the service information of the first terminal sent by the first network element or the server terminal, wherein the service information of the first terminal is included in the first message, and the first message is used to interact with the service information of the first terminal.

25. The method according to claim 24, wherein The first information includes at least one of the following: The first message, wherein the first message is used to interact with the service information of the first terminal; At least one second terminal information, wherein the second terminal information is used to describe the second terminal and indicate that the first terminal interacts with the corresponding second terminal for service information; The second terminal information list, wherein the second terminal information list includes: the at least one second terminal information; The first indication information, wherein the first indication information is used to indicate that the first terminal interacts with the at least one second terminal for service information; At least one second message, wherein the second message is associated with a second terminal, and the second message is used to interact with the service information of the second terminal through the first terminal.

26. The method according to claim 25, wherein The method further includes: Generate a third message associated with the second terminal according to the first information, where the third message is used to interact with the service information of the second terminal; Send a fifth information to the second terminal, where the fifth information includes: the third message.

27. The method according to claim 24, wherein The first information includes at least one of the following: A first message, where the first message is used to interact with the service information of the first terminal; At least one second message, where the second message is associated with a second terminal, and the second message is used to transparently transmit the service information of the second terminal through the first terminal; A second indication information, where the second indication information is used to indicate that the first terminal transparently transmits the second message.

28. The method according to claim 27, wherein The method further includes: Send a fifth information to the second terminal, where the fifth information includes: the second message.

29. The method according to any one of claims 21-28, characterized in that, The method further includes: Receive the service information of the second terminal sent by the second terminal.

30. The method according to claim 29, wherein The method further includes: Send the service information of at least one second terminal to the first network element or server terminal, where the service information of the second terminal is included in the second message or the third message.

31. The method according to any one of claims 22-30, characterized in that, The receiving the first information sent by the first network element or server terminal includes: Send a second information to the first network element or server terminal, where the second information is used to request to implement a service; Receive the first information sent by the first network element or server terminal.

32. The method according to claim 31, wherein The second information includes at least one of the following: The service information of at least one second terminal; A third indication information, where the third indication information indicates that the service information of at least one second terminal has been obtained; A fourth indication information, where the fourth indication information indicates the preferred interaction method for the service information of the second terminal.

33. The method according to any one of claims 22-32, characterized in that, The first information further includes at least one of the following: A first message, where the first message is used to interact with the service information of the first terminal; A fifth indication information, where the fifth indication information is used to indicate that the second terminal is selected by the first terminal or the second terminal is selected by the first network element; A sixth indication information, where the sixth indication information is used to indicate obtaining the service information of the second terminal selected by the first terminal; A seventh indication information, where the seventh indication information is used to indicate obtaining the service information of the second terminal discovered by the first terminal.

34. The method according to any one of claims 22-33, characterized in that, The method further includes any one of the following: Send the selected at least one second terminal information or the discovered at least one second terminal information to the first network element or server terminal; Send a second terminal information list to the first network element or server terminal, where the second terminal information list includes: the selected at least one second terminal information or the discovered at least one second terminal information.

35. An information interaction method, characterized in that, Executed by the first terminal, the method includes: Receive a fourth information sent by the second terminal, where the fourth information is used to indicate that the first terminal interacts with the first network element or server terminal for the service information of the second terminal, or indicates that the first terminal transparently transmits the service information of the second terminal to the first network element or server terminal.

36. The method according to claim 35, wherein The service information includes at least one of the following: Terminal capabilities; Service assistance data; Service measurement result; Service-related measurement result.

37. The method according to any one of claims 35-36, characterized in that, The fourth information includes at least one of the following: Second terminal information, where the second terminal information is used to describe the second terminal and indicate that the first terminal interacts with the service information of the corresponding second terminal; First indication information, where the first indication information is used to indicate that the first terminal interacts with the service information of the second terminal; Second message, where the second message is associated with the second terminal, and the second message is used to interact with the service information of the second terminal through the first terminal.

38. The method according to claim 37, wherein The method further includes: Generating a third message associated with the second terminal according to the fourth information, where the third message is used to interact with the service information of the second terminal; Sending third information to the first network element or server terminal, where the third information includes: the third message; Receiving the service information of the second terminal sent by the first network element or server terminal.

39. The method according to any one of claims 35-36, characterized in that, The fourth information includes at least one of the following: Second terminal information, where the second terminal information is used to describe the second terminal and indicate that the first terminal transparently transmits the service information of the corresponding second terminal; Second message, where the second message is associated with the second terminal, and the second message is used to transparently transmit the service information of the second terminal through the first terminal; Second indication information, where the second indication information is used to indicate that the first terminal transparently transmits the second message.

40. The method according to claim 39, wherein The method further includes: Sending third information to the first network element or server terminal, where the third information includes: the second message; Receiving the service information of the second terminal sent by the first network element or server terminal.

41. The method according to claim 38 or 40, characterized in that, The method further includes: Sending the service information of the second terminal to the second terminal, where the service information of the second terminal is included in the second message or the third message.

42. The method according to any one of claims 35-36, characterized in that, The method further includes: Receiving the service information of the second terminal sent by the second terminal, where the service information of the second terminal is included in the second message or the third message.

43. An information interaction method, characterized in that, The method includes: A first network element or server terminal sends first information to a first terminal, where the first information is used to interact with the service information of the first terminal with the first terminal; the first information is further used to indicate that the first terminal interacts with at least one second terminal or indicates that the first terminal transparently transmits service information to at least one second terminal; The first terminal receives the first information sent by the first network element or server terminal.

44. An information interaction method, characterized in that, The method includes: A second terminal sends fourth information to a first terminal, where the fourth information is used to indicate that the first terminal interacts with the service information of the second terminal with a first network element or server terminal or indicates that the first terminal transparently transmits the service information of the second terminal to the first network element or server terminal; The first terminal receives the fourth information sent by the second terminal.

45. A first network element, characterized in that The first network element includes: A transceiver module, configured to send a first message to a first terminal, where the first message is used to interact with the first terminal about the service information of the first terminal; the first message is further used to instruct the first terminal to interact with at least one second terminal about service information, or to instruct the first terminal to transparently transmit service information to at least one second terminal.

46. A terminal, characterized in that, The terminal includes: A transceiver module, configured to send a first message to a first terminal, where the first message is used to interact with the first terminal about the service information of the first terminal; the first message is further used to instruct the first terminal to interact with at least one second terminal about service information, or to instruct the first terminal to transparently transmit service information to at least one second terminal; or, configured to send a fourth message to the first terminal, where the fourth message is used to instruct the first terminal to interact with a first network element or a server terminal about the service information of the second terminal, or to instruct the first terminal to transparently transmit the service information of the second terminal to the first network element or the server terminal; or, configured to receive the first message sent by the first network element or the server terminal; or, configured to receive the fourth message sent by the second terminal.

47. A communication device, characterized in that, It includes: One or more processors; Wherein, the processor is configured to execute the information interaction method according to any one of claims 1-44.

48. A storage medium storing instructions, characterized in that, When the instruction runs on the communication device, the communication device is caused to execute the information interaction method according to any one of claims 1-44.

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