Service information interaction methods, and communication device, communication system and storage medium

Abstract

The present disclosure relates to service information interaction methods, and a communication device, a communication system and a storage medium. A service information interaction method comprises: a first network element sending first information, wherein the first information comprises a first candidate terminal list, and the first information is used for determining at least one second terminal; the first network element receiving a second terminal list, wherein the second terminal list comprises information of the at least one second terminal; and on the basis of the second terminal list, the first network element performing service information interaction. Thus, during the process of service information interaction, the execution of an invalid operation between a terminal and a network element can be avoided.

Description

Business information interaction method, communication equipment, communication system, and storage medium Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a service information interaction method, communication equipment, a communication system, 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 from one terminal to another, through a PC5 interface. A PC5 interface refers to a communication interface between terminals, such as a short-range direct communication interface between vehicles, people, and road infrastructure. Sidelink SL positioning refers to estimating the position of a located terminal based on the sidelink SL. For example, ranging or sidelink SL positioning can be performed on a located terminal (e.g., a target terminal (target user equipment, target UE)) based on information from a terminal (e.g., a positioning terminal (located user equipment, located UE)). The reference terminal can be, for example, an SL reference terminal whose position is known or can be known in ranging or sidelink SL positioning. For another example, the relative position information of a terminal (e.g., a target terminal (target user equipment, target UE)) and another terminal (e.g., 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 a service information interaction method, network device, terminal, device, chip system, storage medium, computer program and computer program product, which can be applied in the field of communication technology to solve the technical problem that "the relevant technology may perform invalid operations between the terminal and the network element during the service information interaction process."

[0005] The present disclosure provides a business information interaction method, communication equipment, communication system, and storage medium.

[0006] According to a first aspect of an embodiment of the present disclosure, a service information interaction method is proposed, which is executed by a first network element, including: sending first information, wherein the first information includes: a first candidate terminal list; the first information is used to determine at least one second terminal; receiving a second terminal list, wherein the second terminal list includes: information of at least one second terminal; and exchanging service information according to the second terminal list.

[0007] According to a second aspect of an embodiment of the present disclosure, a service information interaction method is proposed, which is executed by a first terminal, including: receiving first information, wherein the first information includes: a first candidate terminal list; determining at least one second terminal based on the first information; and sending a second terminal list, wherein the second terminal list includes: information of at least one second terminal.

[0008] According to a third aspect of an embodiment of the present disclosure, a service information interaction method is proposed, which is executed by a first network element, including: satisfying a second condition and selecting at least one second terminal according to a first candidate terminal list, or satisfying a second condition and selecting at least one second terminal according to a second terminal list, wherein the second terminal list is determined based on the first candidate terminal list; and exchanging service information of the at least one second terminal.

[0009] According to the fourth aspect of an embodiment of the present disclosure, a service information interaction method is proposed, including: a first network element sends first information, wherein the first information includes: a first candidate terminal list; the first terminal determines at least one second terminal based on the first information, and sends a second terminal list, wherein the second terminal list includes: information of at least one second terminal; the first network element receives the second terminal list, and exchanges service information based on the second terminal list.

[0010] According to the fifth aspect of an embodiment of the present disclosure, a first network element is proposed, including: a transceiver module, used to send first information, wherein the first information includes: a first candidate terminal list; the first information is used to determine at least one second terminal and receive a second terminal list, wherein the second terminal list includes: information of at least one second terminal, and interactive service information based on the second terminal list.

[0011] According to the sixth aspect of an embodiment of the present disclosure, a terminal is proposed, comprising: a transceiver module for receiving first information, wherein the first information includes: a first candidate terminal list, and sending a second terminal list, wherein the second terminal list includes: information of at least one second terminal; and a processing module for determining at least one second terminal based on the first information.

[0012] According to the seventh 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 to enable the communication device to execute the business information interaction method of any one of the first aspect, the second aspect, the third aspect, and the fourth aspect.

[0013] According to the eighth aspect of an embodiment of the present disclosure, a communication system is proposed, characterized in that it includes a first network element and a first terminal, wherein the first network element is configured to implement the service information interaction method of the first aspect and the third aspect, and the first terminal is configured to implement the service information interaction method of the second aspect.

[0014] According to the ninth 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 a business information interaction method such as any one of the first aspect, the second aspect, the third aspect, and the fourth aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] 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.

[0016] FIG1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure;

[0017] FIG2A is an interaction diagram illustrating a method for interacting with service information according to an embodiment of the present disclosure;

[0018] FIG2B is an interaction diagram illustrating a method for interacting with service information according to another embodiment of the present disclosure;

[0019] FIG3A is an interaction diagram illustrating a method for interacting with service information according to another embodiment of the present disclosure;

[0020] FIG3B is an interaction diagram illustrating a method for interacting with service information according to another embodiment of the present disclosure;

[0021] FIG3C is an interaction diagram illustrating a method for interacting with service information according to another embodiment of the present disclosure;

[0022] FIG3D is an interaction diagram illustrating a method for interacting with service information according to yet another embodiment of the present disclosure;

[0023] FIG4A is an interaction diagram illustrating a method for interacting with service information according to another embodiment of the present disclosure;

[0024] FIG4B is an interaction diagram illustrating a method for interacting with service information according to another embodiment of the present disclosure;

[0025] FIG4C is an interaction diagram illustrating a method for interacting with service information according to yet another embodiment of the present disclosure;

[0026] FIG5 is an interaction diagram illustrating a method for interacting with service information according to yet another embodiment of the present disclosure;

[0027] FIG6 shows a schematic diagram of improved terminal discovery or selection in the SL-MO-LR process;

[0028] FIG7A is a schematic structural diagram of a first network element proposed in an embodiment of the present disclosure;

[0029] FIG7B is a schematic structural diagram of a terminal proposed in another embodiment of the present disclosure;

[0030] FIG8A is a schematic structural diagram of a communication device proposed in an embodiment of the present disclosure;

[0031] FIG8B is a schematic diagram of the structure of the chip proposed in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0032] The present disclosure provides a method for interacting with business information, as well as a communication device, a communication system, and a storage medium. In some embodiments, the terms "business information interaction method," "information processing method," and "communication method" are interchangeable; the terms "business information interaction device," "information processing device," and "communication device" are interchangeable; and the terms "information processing system," "communication system," and "communication system" are interchangeable.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0038] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0039] 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.

[0040] 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.

[0041] 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 the use of prefixes should not constitute unnecessary restrictions. 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] In some embodiments, "network" can be interpreted as devices included in the network, such as access network equipment, core network equipment, etc.

[0047] 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.

[0048] 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.

[0049] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0050] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0051] 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 .

[0052] 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.

[0053] 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).

[0054] 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 and schedule resources for the positioning of terminals registered with or accessing the 5G core network (5GCN).

[0055] In some embodiments, the first network element 1021 is used to provide location management functionality.

[0056] In some embodiments, the second network element 1022 is, for example, a network element capable of processing an external positioning request, triggering the network to initiate positioning, and returning the positioning result to the client that initiated the positioning.

[0057] In some embodiments, the second network element 1022 is, for example, a Gateway Mobile Location Center (GMLC) network element, but the name is not limited thereto.

[0058] In some embodiments, the third network element 1023 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 the terminal and the wireless, receives all connection and session related information from the user equipment, and performs registration, connection, reachability, and mobility management. In addition, the AMF network element provides a session management message transmission channel for the terminal device and the session management function (SMF) device, and provides authentication and authorization functions for the user when accessing.

[0059] In some embodiments, the third network element 1023 is used to provide access and mobility management functions.

[0060] 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.

[0061] 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.

[0062] 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.

[0063] 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).

[0064] 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.

[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 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.

[0067] Optionally, the SL positioning client terminal refers to a third-party terminal other than the SL reference terminal, target terminal, positioning terminal, etc. The application in the SL positioning client terminal can initiate a ranging or SL positioning service request.

[0068] Optionally, in the SL positioning process involving the 5G core network (5G Core, 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 result may include: absolute position, relative position, distance, and direction. That is, the content of the ranging / SL positioning result may depend 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.

[0070] Optionally, a Location Management Function (LMF) network element may pre-configure a candidate positioning terminal list, including information about at least one candidate positioning terminal, such as capabilities, fix information, and location information. A candidate positioning terminal may be, for example, a positioning terminal deployed by a roadside unit (RSU) or an operator. The LMF network element may provide the candidate positioning terminal list to the target terminal.

[0071] Optionally, the target terminal may discover and select one or more positioning terminals for ranging / SL positioning services.

[0072] Optionally, multiple candidate positioning terminals may be found. In this case, a positioning terminal is selected from the candidate positioning terminal list. The selection of the positioning terminal is based on:

[0073] (1) List of candidate positioning terminals (if any).

[0074] (2) Capabilities of candidate positioning terminals, such as supported SL positioning methods.

[0075] (3) Determine the Quality of Service (QoS) requirements.

[0076] (4) Whether the PLMN of the candidate terminal serving the service is the same as the PLMN of the target terminal serving the service.

[0077] Optionally, when the LMF network element decides to perform SL positioning on the target terminal and triggers the discovery of a positioning terminal, the LMF network element can determine whether the LMF network element or the target terminal selects the positioning terminal. If the decision is for the LMF network element to select the positioning terminal, the target terminal sends the multiple discovered candidate positioning terminals to the LMF network element for selection. After determining the selected positioning terminal, the LMF network element sends the selected positioning terminal to the target terminal.

[0078] Optionally, no matter whether the positioning terminal is selected by the LMF network element or the target terminal, the selection of the positioning terminal should be completed before executing the positioning step.

[0079] Optionally, in the Sidelink Mobile Originated Location Request (SL-MO–LR) process, when a first candidate terminal list is provided in a certain step, operations related to other terminals may have been performed before the second terminal list is determined. Therefore, invalid operations may occur, such as obtaining capabilities of terminals not included in the second terminal list, such as providing positioning assistance data for terminals not included in the second terminal list, such as obtaining location information of terminals not included in the second terminal list.

[0080] The embodiments of the present disclosure provide a method for improving the discovery or selection of terminals with the participation of core network devices, and for avoiding the execution of invalid operations for terminals not included in the second terminal list during the service information interaction process.

[0081] The present disclosure provides an improved method for terminal discovery and selection before performing a positioning step between a core network device (e.g., an LMF network element) and a positioning terminal, including:

[0082] Before a core network device (eg, an LMF network element) requests to obtain capabilities of a terminal, the core network device (eg, an LMF network element) requests the terminal to perform terminal discovery or selection.

[0083] Before obtaining the position of the positioning terminal or sending auxiliary data to the positioning terminal, the core network device (such as the LMF network element) requests the terminal to perform terminal discovery or selection.

[0084] The embodiments of the present disclosure provide a method that can be applied in business scenarios. For example, it can be applied in ranging or SL positioning scenarios. Of course, the method of the present disclosure can also be applied in any other possible business scenarios.

[0085] FIG2A is an interactive diagram of a method for interacting with service information according to an embodiment of the present disclosure. As shown in FIG2A , the present disclosure embodiment relates to a method for interacting with service information, which can be used in a communication system 100. The method includes:

[0086] Step S2101: The first network element determines a first candidate terminal list.

[0087] The candidate terminal list determined by the first network element through screening may be referred to as the first candidate terminal list. The first candidate terminal list includes information about multiple candidate terminals, which describes candidate terminals. A candidate terminal is a terminal to be discovered or selected, and the candidate terminal information may include, for example, an identifier of the candidate terminal. If applied to ranging or SL positioning scenarios, the candidate terminal may be, for example, a positioning terminal, without limitation.

[0088] In some embodiments, the candidate terminal information is at least one of the following: candidate terminal information sent by the first terminal and received by the first network element; candidate terminal information in a second candidate terminal list locally configured by the first network element; and candidate terminal information in a third candidate terminal list obtained by the first network element. This effectively improves the comprehensiveness of the candidate terminal information coverage.

[0089] In some embodiments, the first terminal can send one or more candidate terminal information to the first network element, and the first network element can receive one or more candidate terminal information sent by the first terminal. In addition, a second candidate terminal list can be pre-configured locally on the first network element, which includes one or more candidate terminal information, and the first network element can also obtain a third candidate terminal list, which includes one or more candidate terminal information. Then, the first network element can filter the candidate terminal information in the first candidate terminal list from the one or more candidate terminal information sent by the first terminal, and / or the first network element can filter the candidate terminal information in the first candidate terminal list from one or more candidate terminal information in the second candidate terminal list, and / or the first network element can filter the candidate terminal information in the first candidate terminal list from one or more candidate terminal information in the third candidate terminal list, thereby supporting the acquisition of a comprehensive first candidate terminal list, and effectively improving the flexibility of obtaining the first candidate terminal list, and effectively applying it to personalized business scenarios.

[0090] In some embodiments, after receiving a first request sent by the target terminal or any terminal, the first network element determines a first candidate terminal list, where the first request may be an SL-MO-LR request. In some embodiments, after receiving a second request sent by a third network element, the third network element determines the first candidate terminal list, where the second request is triggered by a service request, a UL NAS TRANSPORT message, or an SL-MO-LR request message sent by the UE to the third network element.

[0091] Before executing step S2101, the first network element may determine or discover one or more terminals as candidate positioning terminals in a variety of ways, which are not limited herein. For example, as shown in 1 in FIG. 6 below, the first network element may determine ranging / SL service authorization, ranging / SL service policy, and / or ranging / SL service parameters for one or more terminals.

[0092] Step S2102: The first network element determines that a first condition is met and sends first information, where the first information includes: a first candidate terminal list.

[0093] In some embodiments, after determining the first candidate terminal list, the first network element may indicate the first candidate terminal list to the first terminal, such as including the first candidate terminal list in the first information, and instructing the first terminal to discover at least one second terminal based on the first candidate terminal list by sending the first information to the first terminal. There is no restriction on this.

[0094] The discovered second terminal is used to implement the service.

[0095] In this embodiment, the first network element may send the first candidate terminal list to the first terminal through the first information if the first condition is met, and / or instruct the first terminal to discover at least one second terminal according to the first candidate terminal list in the first information.

[0096] In some embodiments, satisfying the first condition includes at least one of the following: multiple candidate terminal information sent by the first terminal is not received, wherein the candidate terminal information is used to describe the candidate terminal; the first terminal does not perform the terminal discovery process; the candidate terminal described by at least one candidate terminal information in the first candidate terminal list is not discovered by the first terminal; the candidate terminal described by at least one candidate terminal information in the second candidate terminal list is not discovered by the first terminal, wherein the second candidate terminal list is locally configured in the first network element; the candidate terminal described by at least one candidate terminal information in the third candidate terminal list is not discovered by the first terminal, wherein the third candidate terminal list is obtained by the first network element.

[0097] In some embodiments, if no candidate terminal information is received from the first terminal, it indicates that the first terminal may not have performed the second terminal discovery process and has not sent any candidate terminal information to the first network element. Conversely, if the first network element receives multiple candidate terminal information sent by the first terminal, it indicates that the first terminal has performed the second terminal discovery process and has sent candidate terminal information to the first network element. The candidate terminal information sent by the first terminal can be used to indicate candidate terminals that have been discovered by the first terminal.

[0098] In some embodiments, the first network element may determine whether the first terminal will send candidate terminal information. For example, in 1 of Figure 6 below, the first network element or the ranging / SL service server may configure the ranging / SL service authorization, ranging / SL service policy and / or ranging / SL service parameters of the first terminal so that the first terminal does not send candidate terminal information.

[0099] In some embodiments, the first terminal may indicate whether to send candidate terminal information through the first request and the second request.

[0100] In some embodiments, if the first network element receives multiple candidate terminal information sent by the first terminal, the first network element can determine whether there is a candidate terminal described by the candidate terminal information in the first candidate terminal list, the second candidate terminal list, or the third candidate terminal list that has not been discovered by the first terminal based on the multiple candidate terminal information received from the first terminal.

[0101] In some embodiments, the candidate terminal described by at least one candidate terminal information in the first candidate terminal list is not discovered by the first terminal, indicating that the first terminal has not successfully discovered the corresponding candidate terminal in the first candidate terminal list during the terminal discovery process.

[0102] In some embodiments, the candidate terminal described by at least one candidate terminal information in the second candidate terminal list is not discovered by the first terminal, indicating that the first terminal has not successfully discovered the corresponding candidate terminal in the second candidate terminal list during the terminal discovery process.

[0103] In some embodiments, the candidate terminal described by at least one candidate terminal information in the third candidate terminal list is not discovered by the first terminal, indicating that the first terminal has not successfully discovered the corresponding candidate terminal in the third candidate terminal list during the terminal discovery process.

[0104] In some embodiments, the candidate terminal described in the candidate terminal information of the first candidate terminal list, the second candidate terminal list, or the third candidate terminal list is not discovered by the first terminal, which may mean that the undiscovered terminal may not be suitable as a positioning terminal; or, the candidate terminal described in the candidate terminal information of the first candidate terminal list, the second candidate terminal list, or the third candidate terminal list is not discovered by the first terminal, which may mean that the first network element has not configured the corresponding ranging / SL service authorization, ranging / SL service policy and / or ranging / SL service parameters for the undiscovered terminal, but the unsent terminal is suitable as a positioning terminal.

[0105] In some embodiments, the first network element sends the first information, and the first information may be sent in a new message interaction or in other message interactions, for example, the first information may be sent in a capability request message, and there is no limitation on this.

[0106] Step S2103: The first terminal receives the first information and discovers at least one second terminal according to the first candidate terminal list.

[0107] In some embodiments, the first terminal may receive the first information, determine the first candidate terminal list sent by the first network element according to the first information, and discover at least one second terminal with reference to the first candidate terminal list.

[0108] In some embodiments, different from what is shown in FIG. 6 , the first terminal may perform one or more terminal discovery processes after receiving the first candidate terminal list.

[0109] It is understandable that the candidate terminal determined by the first network element for the first terminal may be different from the candidate terminal determined by the first terminal itself. Therefore, through step S2103, a more comprehensive positioning terminal can be selected.

[0110] Step S2104: The first terminal sends a second terminal list, where the second terminal list includes information of at least one second terminal.

[0111] In some embodiments, after discovering at least one second terminal, the first terminal may indicate information of the at least one second terminal discovered to the first network element, for example, by sending a second terminal list to indicate information of the at least one second terminal discovered to the first network element.

[0112] In some embodiments, after determining the first candidate terminal list, if the first terminal has already executed a terminal discovery process and one or more terminals discovered by executing the terminal discovery process belong to the first candidate terminal list, the terminal discovery process may not be executed.

[0113] In some embodiments, the first network element sends the first information, which may be sent in a new message interaction or in other message interactions, for example, sending the second terminal list in a response message to a capability request, without limitation.

[0114] Step S2105: The first network element selects a second terminal according to the second terminal list.

[0115] In some embodiments, after receiving the second terminal list, the first network element may reference the second terminal list to select a second terminal. For example, if the second terminal list includes information about at least one second terminal, and the information about each second terminal describes the corresponding second terminal, the first network element may select information about a second terminal from the information about the at least one second terminal and select the second terminal described by the information about the selected second terminal as the selected second terminal. The first network element may also select each second terminal in the second terminal list as the selected second terminal, without limitation.

[0116] In some embodiments, the number of the selected second terminals may be one or more.

[0117] In some embodiments, when determining that the second condition is met, the first network element may select the second terminal according to the second terminal list, thereby effectively improving the flexibility of terminal selection and effectively applying it to personalized communication scenarios.

[0118] In some embodiments, satisfying the second condition includes at least one of the following: determining that the second terminal is selected by the first network element; and that each candidate terminal described in the first candidate terminal list has been discovered by the first terminal. In other words, if the second terminal is determined to be selected by the first network element, the second terminal may be selected based on the second terminal list. Alternatively, if each candidate terminal described in the first candidate terminal list has been discovered by the first terminal, the second terminal may be selected based on the second terminal list, without limitation.

[0119] Step S2106: The first network element exchanges service information according to the second terminal list.

[0120] After selecting the second terminal, the first network element may exchange service information according to the second terminal list. For example, the first network element may trigger the exchange of service information of at least one second terminal selected from the second terminal list.

[0121] In some embodiments, the service information may include, for example, at least one of the following: capabilities of the second terminal; service measurement results of the second terminal; service-associated measurement results of the second terminal and the first terminal; and service assistance data of the second terminal. The service-associated measurement results of the second terminal and the first terminal may also be service-associated measurement data of the second terminal and the first terminal.

[0122] In some embodiments, the first network element may interact with the first terminal and the second terminal to obtain the capability of the second terminal, the service association measurement result of the second terminal with the first terminal, or provide service assistance data to the second terminal.

[0123] In some embodiments, the first network element may trigger a service process related to the second terminal to obtain a service measurement result of the second terminal.

[0124] In some embodiments, for ranging or sidelink SL positioning services, the first terminal may be a target terminal (Target UE), the second terminal may be a positioning terminal (Located UE), and the first terminal may interact directly with the first network element, or may interact with the first network element through a second terminal that can connect to the first network element. The capability of the second terminal is the capability of the positioning method supported by the second terminal, the service measurement result of the second terminal is the absolute position result information of the Located UE, the service association measurement result of the second terminal and the first terminal is the relative position information measurement data between the target terminal and the positioning terminal, and the service auxiliary data of the second terminal is the auxiliary data provided to the second terminal for implementing ranging or sidelink SL positioning services.

[0125] Therefore, since the first terminal is first instructed to discover the second terminal list and select the second terminal for implementing the service, and then the service information of the second terminal is triggered to be exchanged according to the second terminal list, invalid operations can be avoided for the selected second terminal during the service information exchange process. For example, the capabilities of terminals not included in the second terminal list can be obtained, such as providing service positioning assistance data for terminals not included in the second terminal list, such as obtaining the location information of terminals not included in the second terminal list.

[0126] The process of exchanging service information between the first network element and the first terminal and the second terminal is described as follows:

[0127] In some embodiments, a first network element may send second information to a first terminal, where the second information is used to request the interaction of capabilities and / or service-related measurement results of at least one second terminal in a second terminal list. The first terminal receives the second information sent by the first network element, obtains the capabilities and / or service-related measurement results of the second terminal, and sends third information to the first network element. Alternatively, the first terminal may forward information requesting the capabilities and / or service-related measurement results of the second terminal, receive the capabilities and / or service-related measurement results of the second terminal, and then send third information to the first network element, where the information requesting the capabilities and / or service-related measurement results of the second terminal is included in the second information, the third information is used to indicate the capabilities and / or service-related measurement results of at least one second terminal, and the first network element may receive the third information sent by the first terminal. This achieves effective interaction of the capabilities and / or service-related measurement results of the second terminals.

[0128] That is, the first terminal sends service information between the first network element and the second terminal. After receiving the second information sent by the first network element, the first terminal can trigger the acquisition of the capability and / or service-related measurement results of each second terminal. The first terminal can also send the acquired capability and / or service-related measurement results of the second terminal to the first network element. Optionally, the first terminal sends service information between the first network element and the second terminal. After receiving the second information sent by the first network element, the first terminal can forward information for requesting the capability and / or service-related measurement results of each second terminal to each second terminal. Each second terminal sends its second terminal capability and / or service-related measurement results to the first terminal, and the first terminal forwards the second terminal capability and / or service-related measurement results to the first network element.

[0129] In some embodiments, the first terminal may send fourth information to the first network element, where the fourth information is used to indicate provision of service assistance data of at least one second terminal. The first network element may receive the fourth information sent by the first terminal and obtain the service assistance data of the second terminal. The first network element may also send fifth information to the first terminal, where the fifth information is used to indicate service assistance data of at least one second terminal. The first terminal may receive the fifth information sent by the first network element. Optionally, the first terminal may also provide the service assistance data of the second terminal to the second terminal. This enables effective interaction of service assistance data for the second terminal.

[0130] In some embodiments, the first network element may obtain sixth information of at least one second terminal, where the sixth information is used to indicate a service measurement result of the corresponding second terminal, thereby achieving effective interaction of the service measurement results of the second terminal.

[0131] In some embodiments, information interaction with the second terminal can be achieved through transparent transmission or non-transparent transmission of the first terminal. In some embodiments, the first network element can also interact with the first terminal for information related to the first terminal's service. This interaction can be processed independently or in combination with the information interaction with the second terminal.

[0132] The service information interaction method involved in the embodiments of the present disclosure may include at least one of steps S2101 to S2106. For example, step S2101 can be implemented as an independent embodiment, step S2102 can be implemented as an independent embodiment, and so on, but the present invention is not limited thereto. Steps S2101+S2102 can be implemented as independent embodiments, and steps S2101+S2102+S2103 can be implemented as independent embodiments, but the present invention is not limited thereto.

[0133] 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.

[0134] In this embodiment, a first network element determines a first candidate terminal list, determines that a first condition is satisfied, and sends first information, where the first information includes the first candidate terminal list. The first terminal receives the first information and discovers at least one second terminal based on the first candidate terminal list. The first terminal sends a second terminal list, where the second terminal list includes information about the at least one second terminal. The first network element selects the second terminal based on the second terminal list, and the first network element exchanges service information based on the second terminal list. Because the first terminal is first instructed to discover the second terminal list and select the second terminal for implementing the service, and only then triggers the exchange of service information with the second terminal based on the second terminal list, invalid operations can be avoided between the terminal and the first network element during the service information exchange process.

[0135] In the disclosed embodiment, the first network element can select the second terminal according to the first candidate terminal list when determining that the second condition is met, thereby effectively improving the flexibility of the second terminal selection and effectively applying it to personalized service scenarios.

[0136] In the embodiment of the present disclosure, if the interaction step of FIG. 2A has been performed, selecting the second terminal according to the first candidate terminal list may not be performed, and there is no limitation to this.

[0137] In the embodiment of the present disclosure, the second condition is satisfied, including at least one of the following: determining that the second terminal is selected by the first network element; and the candidate terminal described by each candidate terminal information in the first candidate terminal list has been discovered by the first terminal, thereby effectively supporting the first network element to select the second terminal.

[0138] That is to say, if it is determined that the second terminal is selected by the first network element, and the candidate terminal described by each candidate terminal information in the first candidate terminal list determined by the first network element has been discovered by the first terminal, it can be determined that there is no need to instruct the first terminal to perform the discovery process, and it can also be determined that there is no need to instruct the first terminal to perform the selection process. At this time, the first network element can refer to the first candidate terminal list to select the second terminal.

[0139] In the following embodiments, for descriptions of method steps that are the same as or corresponding to those in the above embodiments, please refer to the above embodiments for details and will not be repeated here.

[0140] FIG2B is an interactive diagram of a service information interaction method according to another embodiment of the present disclosure. As shown in FIG2B , the present disclosure embodiment relates to a service information interaction method that can be used in a communication system 100. The method includes:

[0141] Step S2201: The first network element determines a first candidate terminal list.

[0142] Step S2202: The first network element determines that a first condition is met and sends first information, where the first information includes: a first candidate terminal list.

[0143] In some embodiments, after determining the first candidate terminal list, the first network element may indicate the first candidate terminal list to the first terminal, such as including the first candidate terminal list in the first information. The first network element may also instruct the first terminal to select at least one second terminal based on the first candidate terminal list, for example, by including indication information in the first information to instruct the first terminal to select the second terminal. There is no restriction on this.

[0144] The selected second terminal is used to implement the service.

[0145] In this embodiment, the first network element may send the first candidate terminal list to the first terminal if the first condition is met, and instruct the first terminal to select at least one second terminal according to the first candidate terminal list.

[0146] In some embodiments, the first information is used to trigger the first terminal to select at least one second terminal based on a first candidate terminal list; wherein satisfying the first condition includes determining that the first terminal selects the second terminal. This enables timely instructing the first terminal to select the second terminal based on the first candidate terminal list.

[0147] In some embodiments, the first network element sends the first information, and the first information may be sent in a new message interaction or in other message interactions, for example, the first information may be sent in a capability request message, and there is no limitation on this.

[0148] Step S2203: The first terminal receives the first information and selects at least one second terminal according to the first candidate terminal list.

[0149] In some embodiments, the first terminal may receive the first information, determine the first candidate terminal list sent by the first network element based on the first information, and select at least one second terminal with reference to the first candidate terminal list. Optionally, the first terminal may also need to perform second terminal discovery before selecting the second terminal.

[0150] Step S2204: The first terminal sends a second terminal list, where the second terminal list includes information of at least one second terminal.

[0151] In some embodiments, after selecting at least one second terminal, the first terminal may indicate information of the selected at least one second terminal to the first network element, for example, by sending a second terminal list to indicate information of the selected at least one second terminal to the first network element.

[0152] In some embodiments, the number of the selected second terminals may be one or more.

[0153] In some embodiments, the first network element sends the first information, which may be sent in a new message interaction or in other message interactions, for example, sending the second terminal list in a response message to a capability request, without limitation.

[0154] Step S2205: The first network element exchanges service information according to the second terminal list.

[0155] The service information interaction method involved in the embodiments of the present disclosure may include at least one of steps S2201 to S2205. For example, step S2201 can be implemented as an independent embodiment, step S2202 can be implemented as an independent embodiment, and so on, but the present invention is not limited thereto. Steps S2201+S2202 can be implemented as independent embodiments, and steps S2201+S2202+S2203 can be implemented as independent embodiments, but the present invention is not limited thereto.

[0156] 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.

[0157] In this embodiment, a first network element determines a first candidate terminal list. The first network element determines that a first condition is satisfied and sends first information, where the first information includes the first candidate terminal list. The first terminal receives the first information and selects at least one second terminal based on the first candidate terminal list. The first terminal sends a second terminal list, where the second terminal list includes information about the at least one second terminal. The first network element exchanges service information based on the second terminal list. Because the first terminal is first instructed to select the second terminal list and then triggers the exchange of service information with the second terminal based on the second terminal list, invalid operations can be avoided between the terminal and the first network element during the service information exchange process.

[0158] In the embodiment of the present disclosure, the number of second terminals in the second terminal list is less than or equal to the number of candidate terminals in the first candidate terminal list; the number of second terminals for interactive service information is less than or equal to the number of second terminals included in the second terminal list.

[0159] FIG3A is an interactive diagram of a service information interaction method according to another embodiment of the present disclosure. As shown in FIG3A , the embodiment of the present disclosure relates to a service information interaction method that can be used in a first network element. The method includes:

[0160] Step S3101: Send first information, where the first information includes: a first candidate terminal list; the first information is used to determine at least one second terminal.

[0161] Step S3102: Receive a second terminal list, where the second terminal list includes information of at least one second terminal.

[0162] Step S3103: Exchange service information according to the second terminal list.

[0163] The service information interaction method involved in the embodiments of the present disclosure may include at least one of steps S3101 to S3103. For example, step S3101 may be implemented as an independent embodiment, step S3102 may be implemented as an independent embodiment, and so on, but the present disclosure is not limited thereto. Steps S3101+S3102 may be implemented as independent embodiments, but the present disclosure is not limited thereto.

[0164] 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.

[0165] FIG3B is an interactive diagram of a service information interaction method according to another embodiment of the present disclosure. As shown in FIG3B , the embodiment of the present disclosure relates to a service information interaction method that can be used in a first network element. The method includes:

[0166] Step S3201: If a first condition is met, first information is sent, wherein the first information includes a first candidate terminal list, and the first information is used to trigger the first terminal to discover at least one second terminal according to the first candidate terminal list.

[0167] Step S3202: Receive a second terminal list, where the second terminal list includes information of at least one second terminal.

[0168] Step S3203: Select a second terminal according to the second terminal list.

[0169] Step S3204: Interact with service information based on the selected second terminal.

[0170] The service information interaction method involved in the embodiments of the present disclosure may include at least one of steps S3201 to S3204. For example, step S3201 may be implemented as an independent embodiment, step S3202 may be implemented as an independent embodiment, and so on, but the present disclosure is not limited thereto. Steps S3201+S3202 may be implemented as independent embodiments, but the present disclosure is not limited thereto.

[0171] 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.

[0172] FIG3C is an interactive diagram of a service information interaction method according to another embodiment of the present disclosure. As shown in FIG3C , the present disclosure embodiment relates to a service information interaction method that can be used in a first network element. The method includes:

[0173] Step S3301: If a first condition is met, first information is sent, wherein the first information includes a first candidate terminal list, and the first information is used to trigger the first terminal to select at least one second terminal according to the first candidate terminal list.

[0174] Step S3302: Receive a second terminal list, where the second terminal list includes information of at least one second terminal.

[0175] Step S3303: Exchange service information according to the second terminal list.

[0176] The service information interaction method involved in the embodiments of the present disclosure may include at least one of steps S3301 to S3303. For example, step S3301 can be implemented as an independent embodiment, step S3302 can be implemented as an independent embodiment, and so on, but the present invention is not limited thereto. Steps S3301+S3302 can be implemented as independent embodiments, but the present invention is not limited thereto.

[0177] 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.

[0178] FIG3D is an interactive diagram of a service information interaction method according to another embodiment of the present disclosure. As shown in FIG3D , the embodiment of the present disclosure relates to a service information interaction method that can be used in a first network element. The above method includes:

[0179] Step S3401: If the second condition is met, at least one second terminal is selected according to the first candidate terminal list, or if the second condition is met, at least one second terminal is selected according to the second terminal list, where the second terminal list is determined according to the first candidate terminal list.

[0180] Step S3402: exchanging service information of at least one second terminal.

[0181] The service information interaction method involved in the embodiment of the present disclosure may include step S3401. For example, step S3401 may be implemented as an independent embodiment, but is not limited thereto.

[0182] 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.

[0183] FIG4A is an interactive diagram of a service information interaction method according to another embodiment of the present disclosure. As shown in FIG4A , the embodiment of the present disclosure relates to a service information interaction method that can be used in a first terminal. The above method includes:

[0184] Step S4101: Receive first information, where the first information includes: a first candidate terminal list.

[0185] Step S4102: Determine at least one second terminal according to the first information.

[0186] Step S4103: Send a second terminal list, where the second terminal list includes information of at least one second terminal.

[0187] The service information interaction method involved in the embodiments of the present disclosure may include at least one of steps S4101 to S4103. For example, step S4101 can be implemented as an independent embodiment, step S4102 can be implemented as an independent embodiment, and so on, but the present invention is not limited thereto. Steps S4101+S4102 can be implemented as independent embodiments, but the present invention is not limited thereto.

[0188] 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.

[0189] FIG4B is an interactive diagram of a service information interaction method according to another embodiment of the present disclosure. As shown in FIG4B , the embodiment of the present disclosure relates to a service information interaction method that can be used in a first terminal. The above method includes:

[0190] Step S4201: Receive first information, where the first information includes: a first candidate terminal list.

[0191] Step S4202: Discover at least one second terminal according to the first candidate terminal list.

[0192] Step S4203: Send a second terminal list, where the second terminal list includes information of at least one second terminal.

[0193] The service 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.

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

[0196] Step S4301: Receive first information, where the first information includes: a first candidate terminal list.

[0197] Step S4302: Select at least one second terminal according to the first candidate terminal list.

[0198] Step S4303: Send a second terminal list, where the second terminal list includes information of at least one second terminal.

[0199] The service information interaction method involved in the embodiments of the present disclosure may include at least one of steps S4301 to S4303. 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 invention is not limited thereto. Steps S4301+S4302 can be implemented as independent embodiments, but the present invention is not limited thereto.

[0200] 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.

[0201] FIG5 is an interactive diagram of a service information interaction method according to another embodiment of the present disclosure. As shown in FIG5 , the embodiment of the present disclosure relates to a service information interaction method that can be used in a communication system. The communication system includes a first network element and a first terminal, and the above method includes:

[0202] Step S5101: A first network element sends first information, where the first information includes: a first candidate terminal list.

[0203] Step S5102: The first terminal determines at least one second terminal according to the first information, and sends a second terminal list, where the second terminal list includes information of the at least one second terminal.

[0204] Step S5103: The first network element receives the second terminal list and exchanges service information according to the second terminal list.

[0205] The service information interaction method involved in the embodiments of the present disclosure may include at least one of steps S5101 to S5103. For example, step S5101 can be implemented as an independent embodiment, step S5102 can be implemented as an independent embodiment, and so on, but the present disclosure is not limited thereto. Steps S5101+S5102 can be implemented as independent embodiments, but the present disclosure is not limited thereto.

[0206] 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.

[0207] The following is an exemplary introduction to the above method.

[0208] Optional embodiment:

[0209] As shown in Figure 6, Figure 6 shows a schematic diagram of improved terminal discovery or selection in the SL-MO-LR process. In Figure 6, Figure 6A may include UE1, UE2, ..., UEn (n is a positive integer) (where UE is a target terminal Target UE, UE2 to UEn are located terminals Located UE), AMF network element, LMF network element, Policy Control Function (PCF) network element, Gateway Mobile Location Center (GMLC), Network Exposure Function (NEF) network element / Application Function (AF) network element, or Location Service (LCS) client.

[0210] 1. Authorization of ranging / SL positioning services and issuance of policies and / or parameters.

[0211] 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.

[0212] 2. Terminal discovery.

[0213] 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.

[0214] 3. Establish a secure link.

[0215] In some embodiments, a secure multicast or unicast link may be established between UE1 to UEn to implement information exchange between UE1 to UEn.

[0216] In some embodiments, a secure multicast and / or unicast link can be established between UE1~UEn, so that UE1 and UE2~UEn can exchange ranging or sidelink positioning protocol (Ranging and Sidelink Positioning Protocol, RSPP) messages through the PC5-U reference point, and RSPP messages can also be exchanged between UE2~UEn through PC5-U.

[0217] 4. Notification and verification of ranging / SL positioning.

[0218] In some embodiments, UE1 and UE2-UEn may communicate via PC5 to authorize ranging / SL positioning.

[0219] 5. Capabilities of switching terminals.

[0220] In some embodiments, the SLPP protocol 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.

[0221] 6. Decide to implement the SL-MO-LR process.

[0222] 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.

[0223] 7.UE1 initiates a service request.

[0224] 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.

[0225] 8. Send UL NAS TRANSPORT message (SL-MO-LR request message).

[0226] In some embodiments, the UL NAS TRANSPORT message represents an uplink non-access stratum transport message.

[0227] In some embodiments, UE1 sends a UL NAS TRANSPORT message to the LMF network element through the AMF network element. The UL NAS TRANSPORT message may include a supplementary service SL-MO-LR request message, and the SL-MO-LR request message may include the application layer ID of UE2~UEn.

[0228] 9. Send Nlmf_Location_DetermineLocation Request message.

[0229] 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.

[0230] 9-1.Go down and select Positioning Terminal.

[0231] In some embodiments, if absolute positioning is requested in step 8, the LMF may downwardly select positioning terminals (the so-called downwardly selected terminal list) from UE2 to UEn requested by UE1 for the SL positioning operation according to local configuration.

[0232] 9-2. The request terminal selects UE1 to UEx.

[0233] In some embodiments, if terminal discovery is not performed in step 2, or if UE2 to UEn positioning terminals are not included in step 8, the LMF network element may send a request message to UE1 to request a positioning terminal determination, for example, using a supplementary service message to include multiple candidate positioning terminals.

[0234] 9-3. The terminal responds to the selected UE1 to UEy.

[0235] In some embodiments, UE1 may discover multiple positioning terminals based on the request received in step 9-2, taking into account the multiple candidate positioning terminals received, and feed back the discovered multiple positioning terminals to the LMF network element. UE1 may also feed back the capabilities of the discovered UEs.

[0236] In some embodiments, UE1 may discover multiple positioning terminals based on the request received in step 9-2. If it is determined that UE1 selects a positioning terminal, UE1 selects and considers at least one positioning terminal from the multiple candidate positioning terminals received based on the discovered multiple positioning terminals and feeds it back to the LMF network element. UE1 may also feed back the capabilities of the selected UE.

[0237] 9-4. Select the positioning terminal.

[0238] In some embodiments, if it is determined that the LMF network element selects to locate the terminal, and the terminal discovered by UE1 in step 9-3 is sent to the LMF network element, the LMF network element may further select to locate the terminal.

[0239] 10. Request to obtain the capabilities of UE1 to UEm.

[0240] In some embodiments, the LMF network element may use an additional service message with an embedded sidelink positioning protocol (SLPP) container to send a request to UE1 to request the capabilities of UE1 to UEm.

[0241] In some embodiments, if the positioning terminal is selected downward in step 9-1 and / or the LMF network element has obtained the capabilities of some UEs, then m is less than n, otherwise m is equal to n. In some embodiments, if UE2 to UEn are not included in step 8 and a candidate positioning terminal list is configured in the LMF network element, or if UE2 to UE are not included in step 8 but the LMF has configured additional positioning terminals, then the LMF network element may send a request to UE1 to obtain the capabilities of the configured candidate positioning terminals whose capabilities are unavailable.

[0242] In some embodiments, if all required terminal capabilities are available, steps 10-11 may be skipped.

[0243] 11. Respond to the acquired capabilities of UE1 to UEm.

[0244] In some embodiments, if the LMF network element requests to obtain capabilities in step 10, UE 1 may return the capabilities to the LMF network element using a supplementary service message with an embedded SLPP container. UE 1 may also return the UE capabilities obtained in step 5. After checking the capabilities of the terminal, the LMF network element may downwardly select a terminal for the SL positioning operation from multiple candidate positioning terminals configured locally, or from UE2 to UEn requested by UE 1 (i.e., the so-called downwardly selected terminal list).

[0245] 11-1. The request terminal selects UE1 to UEx.

[0246] In some embodiments, if the positioning terminal is not determined after step 11, the LMF network element may send a request to UE1 to request the positioning terminal to be determined. For example, a supplementary service message may be used, including multiple candidate positioning terminals.

[0247] 11-2. The terminal responds to the selected UE1 to UEy.

[0248] In some embodiments, based on the request received in step 11-1, UE1 may discover and / or select a positioning terminal and consider the received multiple candidate positioning terminals. UE1 may feed back the discovered and / or selected positioning terminal to the LMF network element. If it is determined that the target terminal selects the positioning terminal, the target terminal may send the selected positioning terminal to the LMF network element. If it is determined that the LMF network element selects the positioning terminal, UE1 may send the discovered terminal to the LMF network element. A terminal discovery process may be performed.

[0249] 11-3. Select a positioning terminal.

[0250] In some embodiments, if it is determined that the LMF network element selects the terminal for positioning, and UE1 sends the discovered terminal to the LMF network element, the LMF network element may select the terminal for positioning.

[0251] In some embodiments, terminal determination interaction can also be implemented in steps 10-11, that is, the LMF network element sends the first information to the first terminal in step 10, and the LMF network element receives the second terminal list sent by the first terminal in step 11. If the LMF selects the second terminal, the LMF further selects the positioning terminal based on the received second terminal list. There is no restriction on this.

[0252] 12. Obtain the location of the positioning terminal based on the 5GC-MT-LR process.

[0253] In some embodiments, the 5GC-MT-LR process refers to a 5GC Mobile Terminated Location Request (5GC-MT-LR) process.

[0254] In some embodiments, if it is indicated in step 8 that the absolute position of the target terminal needs to be obtained, the LMF network element can locally retrieve the available determined position of the positioning terminal, or use the application layer ID of the positioning terminal to trigger the 5GC-MT-LR process to the GMLC network element to obtain the determined absolute position of the positioning terminal.

[0255] 13-14. Sharing assistance data for multiple UEs.

[0256] In some embodiments, if no request is made to obtain assistance data in step 8, UE1 may send a request to the LMF network element for obtaining designated assistance data.

[0257] In some embodiments, the LMF network element sends the requested auxiliary data to UE1. Optionally, a supplementary service message with an embedded SLPP container can be used to send a selected terminal list to UE1, and UE1 can use the SLPP container to forward the auxiliary data received from the LMF network element to UE2~UEn (or its designated downward selected terminals) respectively. The auxiliary data can assist UE1~UEn (or its designated downward selected terminals) to obtain SL position measurement in step 16, and / or can assist UE1 in calculating the ranging / SL positioning position results. And when the LMF network element decides to use UE-based calculation and requests absolute position information in step 8, the position of the positioning terminal may be included if the privacy profile of the positioning terminal allows sharing of position.

[0258] 15. Request to obtain the positioning information of UE1~UEn.

[0259] In some embodiments, if the SL-MO-LR request in step 8 indicates that position calculation assistance is required and / or indicates that the ranging / SL positioning results are to be transmitted to the LCS client or AF network element, the LMF network element will send a location information request to UE1. If the LMF network element decides to apply UE-based SL positioning, the LMF network element includes an indication of UE-based SL positioning in the request.

[0260] In some embodiments, if an absolute position is requested in step 8, the LMF network element does not need to provide a list of candidate positioning terminals identified by application layer IDs in this step.

[0261] 16.SL positioning / ranging process.

[0262] In some embodiments, UE1 performs ranging / SL positioning procedures between UE1 to UEn (or their designated downstream terminals), wherein the UE may obtain SL position measurement results, and UE2 to UEn (or their designated downstream terminals) transmit their SL position measurement results to UE1.

[0263] 17. Other steps for obtaining and transmitting terminal positioning results.

[0264] In some embodiments, other steps of obtaining and transmitting terminal positioning results may be performed.

[0265] 18. Send DL NAS TRANSPORT message (SL-MO-LR response message).

[0266] In some embodiments, the DL NAS TRANSPORT message refers to a downlink non-access stratum transport message.

[0267] In some embodiments, the LMF network element sends a DL NAS TRANSPORT message to UE1 via 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.

[0268] In some embodiments, the AMF network element may return a supplementary service SL-MO-LR response message to UE1 in a DL NAS TRANSPORT message, which may also include ranging / SL positioning results.

[0269] The disclosed embodiments also support improvements to the terminal discovery and selection processes in other processes.

[0270] In the disclosed embodiments, SL positioning / ranging can be performed for UE1 to UEn in the SL-MT-LR process according to steps 10-17 of the SL-MO-LR process. Prior to these steps, an SL-MT-LR request message is sent and / or an SL-MT-LR response message is received to perform UE discovery and capability exchange, as well as to select a positioning terminal. Therefore, in step 15 of the SL-MO-LR process, the LMF network element does not need to provide a list of candidate positioning terminals to UE1.

[0271] In the disclosed embodiment, in the 5GC-MO-LR process using SL positioning and the 5GC-MT-LR process using SL positioning, the SL-MT-LR request message / SL-MT-LR response message in steps 10-17 of the SL-MO-LR process can be referenced to perform SL positioning / ranging of UE1 to UEn. The positioning terminal can be determined before step 15 of the SL-MO-LR process referenced in this process. Therefore, in step 15 of the SL-MO-LR process referenced in this process, the LMF network element does not need to provide a list of candidate positioning terminals to UE1.

[0272] In the above embodiment, for example, in the above embodiment, determining the terminal interaction can be achieved through step 10 and step 11 of capability interaction.

[0273] In a service-based architecture (SBA), interactions between network elements can be achieved by calling services, rather than sending request messages and response messages. In a non-SBA architecture, this is achieved by sending corresponding messages. For example, in SBA, sending an Nlmf_Location_DetermineLocation request corresponds to calling the Nlmf_Location_DetermineLocation service, and the Nlmf_Location_DetermineLocation response corresponds to the output after the Nlmf_Location_DetermineLocation service is executed. Of course, for other requests sent, the corresponding service can also be called for implementation, and the response corresponding to the request corresponds to the output after the corresponding service is called for execution. There is no specific limitation on the request and / or response.

[0274] FIG7A is a schematic diagram of the structure of a first network element proposed in an embodiment of the present disclosure. As shown in FIG7A , the first network element 7100 may include: at least one of a transceiver module 7101 and a processing module 7102. The first network element 7100 may include:

[0275] The transceiver module 7101 is used to send the first information, wherein the first information includes: a first candidate terminal list; the first information is used to determine at least one second terminal, and receive the second terminal list, the second terminal list includes: information of at least one second terminal, and interactive service information according to the second terminal list. Or

[0276] Processing module 7102 is used to select at least one second terminal according to the first candidate terminal list when the second condition is met, or to select at least one second terminal according to the second terminal list when the second condition is met, wherein the second terminal list is determined based on the first candidate terminal list, and to exchange business information of at least one second terminal.

[0277] In some embodiments of the present disclosure, the transceiver module 7101 is specifically configured to:

[0278] When the first condition is met, the first message is sent.

[0279] In some embodiments of the present disclosure, the first information is used to trigger the first terminal to discover at least one second terminal according to the first candidate terminal list, or to trigger the first terminal to select at least one second terminal according to the first candidate terminal list.

[0280] In some embodiments of the present disclosure, the transceiver module 7101 is specifically configured to:

[0281] According to the second terminal list, service information is acquired, where the service information includes at least one of the following: capability of the second terminal; service measurement result of the second terminal; and service association measurement result of the second terminal and the first terminal.

[0282] In some embodiments of the present disclosure, the transceiver module 7101 is specifically configured to:

[0283] According to the second terminal list, service information is provided, wherein the service information includes: service auxiliary data of the second terminal.

[0284] In some embodiments of the present disclosure, the first candidate terminal list includes a plurality of candidate terminal information, where the candidate terminal information is used to describe the candidate terminal; wherein the candidate terminal information is at least one of the following:

[0285] candidate terminal information sent by the first terminal and received by the first network element;

[0286] candidate terminal information in the second candidate terminal list locally configured by the first network element;

[0287] The candidate terminal information in the third candidate terminal list obtained by the first network element.

[0288] In some embodiments of the present disclosure, the processing module 7102 is configured to perform at least one of the following:

[0289] Filtering the candidate terminal information sent by the first terminal to obtain candidate terminal information in a first candidate terminal list;

[0290] Filtering the candidate terminal information in the second candidate terminal list to obtain the candidate terminal information in the first candidate terminal list;

[0291] The candidate terminal information in the first candidate terminal list is obtained by screening the candidate terminal information in the third candidate terminal list.

[0292] In some embodiments of the present disclosure, the first information is used to trigger the first terminal to discover at least one second terminal according to the first candidate terminal list; wherein satisfying the first condition includes at least one of the following:

[0293] not receiving a plurality of candidate terminal information sent by the first terminal, wherein the candidate terminal information is used to describe the candidate terminal;

[0294] The first terminal does not perform the terminal discovery process;

[0295] At least one candidate terminal information in the first candidate terminal list describes a candidate terminal that is not discovered by the first terminal;

[0296] At least one candidate terminal information in the second candidate terminal list describes a candidate terminal that is not discovered by the first terminal, wherein the second candidate terminal list is locally configured in the first network element;

[0297] At least one candidate terminal information in the third candidate terminal list describes a candidate terminal that is not discovered by the first terminal, wherein the third candidate terminal list is acquired by the first network element.

[0298] In some embodiments of the present disclosure, the first information is used to trigger the first terminal to select at least one second terminal according to the first candidate terminal list; wherein satisfying the first condition includes:

[0299] It is determined that the first terminal selects the second terminal.

[0300] In some embodiments of the present disclosure, the processing module 7102 is further configured to:

[0301] If the second condition is met, do any of the following:

[0302] selecting a second terminal according to the first candidate terminal list;

[0303] Select a second terminal according to the second terminal list.

[0304] In some embodiments of the present disclosure, the second condition is satisfied, including at least one of the following:

[0305] Determining that the first network element selects the second terminal;

[0306] The candidate terminal described by each candidate terminal information in the first candidate terminal list has been discovered by the first terminal.

[0307] In some embodiments of the present disclosure, the transceiver module 7101 is specifically configured to:

[0308] Sending second information to the first terminal, wherein the second information is used to request service information of at least one second terminal in the second terminal list for interaction, wherein the service information includes: capability and / or service-related measurement results;

[0309] Third information sent by the first terminal is received, where the third information is used to indicate a capability and / or service-associated measurement result of at least one second terminal.

[0310] In some embodiments of the present disclosure, the transceiver module 7101 is specifically configured to:

[0311] receiving fourth information sent by the first terminal, wherein the fourth information is used to indicate service information provided to at least one second terminal, the service information including: service auxiliary data;

[0312] Fifth information is sent to the first terminal, where the fifth information is used to indicate service assistance data of at least one second terminal.

[0313] In some embodiments of the present disclosure, the transceiver module 7101 is specifically configured to:

[0314] Acquire sixth information of at least one second terminal, where the sixth information is used to indicate service information of the corresponding second terminal, and the service information includes: a service measurement result.

[0315] In some embodiments of the present disclosure,

[0316] The number of second terminals in the second terminal list is less than or equal to the number of candidate terminals in the first candidate terminal list;

[0317] The number of second terminals in the interactive service information is less than or equal to the number of second terminals included in the second terminal list.

[0318] FIG7B is a schematic diagram of the structure of a terminal proposed in another embodiment of the present disclosure. As shown in FIG7B , the terminal 7200 may include: at least one of a transceiver module 7201 and a processing module 7202. The terminal 7200 may include:

[0319] The transceiver module 7201 is configured to receive first information, wherein the first information includes: a first candidate terminal list, and send a second terminal list, wherein the second terminal list includes: information of at least one second terminal.

[0320] The processing module 7202 is configured to determine at least one second terminal according to the first information.

[0321] In some embodiments of the present disclosure, the processing module 7202 is specifically configured to:

[0322] At least one second terminal is discovered according to the first candidate terminal list, or at least one second terminal is selected according to the first candidate terminal list.

[0323] In some embodiments of the present disclosure, the transceiver module 7201 is further configured to:

[0324] According to the second terminal list, service information is exchanged.

[0325] In some embodiments of the present disclosure, the transceiver module 7201 is further configured to:

[0326] Forwarding service information according to the second terminal list, wherein the service information includes at least one of the following: capability of the second terminal; service association measurement result of the second terminal and the first terminal; service assistance data of the second terminal.

[0327] In some embodiments of the present disclosure, the transceiver module 7201 is further configured to:

[0328] receiving second information sent by the first network element, wherein the second information is used to request the exchange of service information of at least one second terminal in the second terminal list, the service information including: capability and / or service-related measurement results;

[0329] Sending third information to the first network element, where the third information is used to indicate the capability and / or service-related measurement result of at least one second terminal.

[0330] In some embodiments of the present disclosure, the transceiver module 7201 is further configured to:

[0331] Sending fourth information to the first network element, where the fourth information is used to indicate providing service information of at least one second terminal, the service information including: service auxiliary data;

[0332] Fifth information sent by the first network element is received, where the fifth information is used to indicate service auxiliary data of at least one second terminal.

[0333] In some embodiments of the present disclosure,

[0334] The number of second terminals in the second terminal list is less than or equal to the number of candidate terminals in the first candidate terminal list;

[0335] The number of second terminals in the interactive service information is less than or equal to the number of second terminals included in the second terminal list.

[0336] 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.

[0337] In some embodiments, the processing module can be a single module or can include multiple submodules. Optionally, the multiple submodules respectively 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.

[0338] 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.

[0339] 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.

[0340] Figure 8A is a schematic diagram of the structure of a communication device proposed in an embodiment of the present disclosure. Communication device 8100 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 8100 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.

[0341] As shown in Figure 8A, the communication device 8100 includes one or more processors 8101. The processor 8101 can be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute programs, and process program data. The communication device 8100 is used to perform any of the above methods.

[0342] In some embodiments, the communication device 8100 further includes one or more memories 8102 for storing instructions. Optionally, all or part of the memories 8102 may be located outside the communication device 8100.

[0343] In some embodiments, the communication device 8100 further includes one or more transceivers 8103. When the communication device 8100 includes one or more transceivers 8103, the transceiver 8103 performs at least one of the communication steps such as sending and / or receiving in the above method, and the processor 8101 performs the other steps.

[0344] 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.

[0345] In some embodiments, the communication device 8100 may include one or more interface circuits 8104. Optionally, the interface circuit 8104 is connected to the memory 8102. The interface circuit 8104 may be configured to receive signals from the memory 8102 or other devices, and may be configured to send signals to the memory 8102 or other devices. For example, the interface circuit 8104 may read instructions stored in the memory 8102 and send the instructions to the processor 8101.

[0346] The communication device 8100 described in the above embodiments may be a terminal, a network device, or a third entity, but the scope of the communication device 8100 described in the present disclosure is not limited thereto, and the structure of the communication device 8100 may not be limited by FIG. 8A. 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.

[0347] FIG8B is a schematic diagram of the structure of a chip proposed in an embodiment of the present disclosure. If the communication device 8100 can be a chip or a chip system, please refer to the schematic diagram of the structure of the chip 8200 shown in FIG8B , but the present disclosure is not limited thereto.

[0348] The chip 8200 includes one or more processors 8201 , and the chip 8200 is configured to execute any of the above methods.

[0349] In some embodiments, the chip 8200 further includes one or more interface circuits 8202. Optionally, the interface circuit 8202 is connected to the memory 8203. The interface circuit 8202 can be used to receive signals from the memory 8203 or other devices, and can be used to send signals to the memory 8203 or other devices. For example, the interface circuit 8202 can read instructions stored in the memory 8203 and send the instructions to the processor 8201.

[0350] In some embodiments, the interface circuit 8202 performs at least one of the communication steps such as sending and / or receiving in the above method, and the processor 8201 performs the other steps.

[0351] In some embodiments, terms such as interface circuit, interface, transceiver pin, and transceiver may be used interchangeably.

[0352] In some embodiments, the chip 8200 further includes one or more memories 8203 for storing instructions. Alternatively, all or part of the memories 8203 may be outside the chip 8200.

[0353] The present disclosure also proposes a storage medium having instructions stored thereon, which, when executed on the communication device 8100, causes the communication device 8100 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 temporary storage medium.

[0354] The present disclosure also provides a program product, which, when executed by the communication device 8100, enables the communication device 8100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0355] 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.

[0356] 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)).

[0357] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this disclosure.

[0358] 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.

[0359] 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. A business information interaction method, characterized in that, Performed by a first network element, the method includes: Sending first information, where the first information includes: a first list of candidate terminals; the first information is used to determine at least one second terminal; Receiving a second terminal list, where the second terminal list includes: information of the at least one second terminal; Interacting service information according to the second terminal list.

2. The method according to claim 1, characterized in that, The sending of the first information includes: Sending the first information when a first condition is met.

3. The method according to any one of claims 1-2, characterized in that, The first information is used to trigger the first terminal to discover at least one second terminal according to the first list of candidate terminals, or to trigger the first terminal to select at least one second terminal according to the first list of candidate terminals.

4. The method according to any one of claims 1 to 3, characterized in that The interacting of service information according to the second terminal list includes: Obtaining the service information according to the second terminal list, where the service information includes at least one of the following: capabilities of the second terminal; service measurement results of the second terminal; service association measurement results between the second terminal and the first terminal.

5. The method according to any one of claims 1 to 3, characterized in that The interacting of service information according to the second terminal list includes: Providing the service information according to the second terminal list, where the service information includes: service auxiliary data of the second terminal.

6. The method according to any one of claims 1-5, characterized in that, The first list of candidate terminals includes multiple pieces of candidate terminal information, and the candidate terminal information is used to describe candidate terminals; where the candidate terminal information is at least one of the following: Candidate terminal information sent by the first terminal received by the first network element; Candidate terminal information in a second list of candidate terminals locally configured by the first network element; Candidate terminal information in a third list of candidate terminals obtained by the first network element.

7. The method according to claim 6, wherein The method further includes at least one of the following: Screening out the candidate terminal information in the first list of candidate terminals from the candidate terminal information sent by the first terminal; Screening out the candidate terminal information in the first list of candidate terminals from the candidate terminal information in the second list of candidate terminals; Screening out the candidate terminal information in the first list of candidate terminals from the candidate terminal information in the third list of candidate terminals.

8. The method according to any one of claims 2-7, characterized in that, The first information is used to trigger the first terminal to discover at least one second terminal according to the first list of candidate terminals; where the meeting of the first condition includes at least one of the following: Not receiving multiple pieces of candidate terminal information sent by the first terminal, where the candidate terminal information is used to describe candidate terminals; The first terminal has not executed the terminal discovery process; At least one candidate terminal described by the candidate terminal information in the first list of candidate terminals has not been discovered by the first terminal; At least one candidate terminal described by the candidate terminal information in the second list of candidate terminals has not been discovered by the first terminal, where the second list of candidate terminals is locally configured in the first network element; At least one candidate terminal described by the candidate terminal information in the third list of candidate terminals has not been discovered by the first terminal, where the third list of candidate terminals is obtained by the first network element.

9. The method according to any one of claims 2-7, characterized in that, The first information is used to trigger the first terminal to select at least one second terminal according to the first list of candidate terminals; where the meeting of the first condition includes: Determine that the second terminal is selected by the first terminal.

10. The method according to any one of claims 1-9, characterized in that, The method further includes: When the second condition is satisfied, perform any of the following: Select the second terminal according to the first candidate terminal list; Select the second terminal according to the second terminal list.

11. The method according to claim 10, characterized in that, The satisfaction of the second condition includes at least one of the following: Determine that the second terminal is selected by the first network element; Each candidate terminal described in the candidate terminal information in the first candidate terminal list has been discovered by the first terminal.

12. The method according to any one of claims 1 to 11, characterized in that, The interacting of service information according to the second terminal list includes: Send second information to the first terminal, where the second information is used to request to interact with the service information of at least one second terminal in the second terminal list, and the service information includes: capabilities and / or service association measurement results; Receive third information sent by the first terminal, where the third information is used to indicate the capabilities and / or service association measurement results of at least one second terminal.

13. The method according to any one of claims 1 to 12, characterized in that, The interacting of service information according to the second terminal list includes: Receive fourth information sent by the first terminal, where the fourth information is used to indicate to provide the service information of at least one second terminal, and the service information includes: service auxiliary data; Send fifth information to the first terminal, where the fifth information is used to indicate the service auxiliary data of the at least one second terminal.

14. The method according to any one of claims 1-13, characterized in that, The interacting of service information according to the second terminal list includes: Obtain sixth information of at least one second terminal, where the sixth information is used to indicate the service information of the corresponding second terminal, and the service information includes: service measurement results.

15. The method according to any one of claims 1 to 14, characterized in that, Wherein, The number of second terminals in the second terminal list is less than or equal to the number of candidate terminals in the first candidate terminal list; The number of second terminals for interacting service information is less than or equal to the number of second terminals included in the second terminal list.

16. A business information interaction method, characterized in that, When executed by the first network element, the method includes: When the second condition is satisfied, select at least one second terminal according to the first candidate terminal list, or when the second condition is satisfied, select at least one second terminal according to the second terminal list, where the second terminal list is determined according to the first candidate terminal list; Interact with the service information of the at least one second terminal.

17. The method according to claim 16, wherein The satisfaction of the second condition includes at least one of the following: Determine that the second terminal is selected by the first network element; Each candidate terminal described in the candidate terminal information in the first candidate terminal list has been discovered by the first terminal.

18. A service information interaction method, characterized in that When executed by the first terminal, the method includes: Receive first information, where the first information includes: a first candidate terminal list; Determine at least one second terminal according to the first information; Send a second terminal list, where the second terminal list includes: information of the at least one second terminal.

19. The method according to claim 18, characterized in that, The determining of at least one second terminal according to the first information includes: Discover at least one second terminal according to the first candidate terminal list, or select at least one second terminal according to the first candidate terminal list.

20. The method according to any one of claims 18-19, characterized in that, The method further includes: Interact with service information according to the second terminal list.

21. The method according to claim 20, wherein The interactive service information according to the second terminal list includes: Forward the service information according to the second terminal list, where the service information includes at least one of the following: the capabilities of the second terminal; the service association measurement result between the second terminal and the first terminal; the service auxiliary data of the second terminal. The interactive service information according to the second terminal list includes:

22. The method according to any one of claims 20-21, characterized in that, Receive the second information sent by the first network element, where the second information is used to request the interactive service information of at least one second terminal in the second terminal list, and the service information includes: capabilities and / or service association measurement results; Send the third information to the first network element, where the third information is used to indicate the capabilities and / or service association measurement results of at least one second terminal. The interactive service information according to the second terminal list includes:

23. The method according to any one of claims 20-22, characterized in that, Send the fourth information to the first network element, where the fourth information is used to indicate the provision of the service information of at least one second terminal, and the service information includes: service auxiliary data; Receive the fifth information sent by the first network element, where the fifth information is used to indicate the service auxiliary data of the at least one second terminal. Wherein, 24. The method according to any one of claims 18-23, characterized in that The number of second terminals in the second terminal list is less than or equal to the number of candidate terminals in the first candidate terminal list; The number of second terminals for interactive service information is less than or equal to the number of second terminals included in the second terminal list. The method includes:

25. A method for business information interaction, characterized in that, The first network element sends the first information, where the first information includes: the first candidate terminal list; The first terminal determines at least one second terminal according to the first information and sends the second terminal list, where the second terminal list includes: information of the at least one second terminal; The first network element receives the second terminal list and interacts service information according to the second terminal list. The first network element includes:

26. A first network element, characterized in that, A transceiver module, configured to send the first information, where the first information includes: the first candidate terminal list; the first information is used to determine at least one second terminal and receive the second terminal list, the second terminal list includes: information of the at least one second terminal, and interact service information according to the second terminal list; or, A processing module, configured to select at least one second terminal according to the first candidate terminal list when a second condition is met, or select at least one second terminal according to the second terminal list when the second condition is met, where the second terminal list is determined according to the first candidate terminal list and interact the service information of the at least one second terminal. The terminal includes:

27. A terminal, characterized in that, A transceiver module, configured to receive the first information, where the first information includes: the first candidate terminal list and send the second terminal list, the second terminal list includes: information of at least one second terminal; A processing module, configured to determine the at least one second terminal according to the first information. Includes:

28. A communication device, characterized in that, One or more processors; Wherein, the processor is configured to execute the service information interaction method according to any one of claims 1-25. ​ 29. A storage medium, wherein the storage medium stores instructions, characterized in that, When the instruction runs on a communication device, the communication device is caused to execute the service information interaction method according to any one of claims 1-25.

30. A communication system, characterized in that, It includes a first network element and a first terminal, wherein the first network element is used to execute the service information interaction method according to any one of claims 1-17, and the first terminal is used to execute the service information interaction method according to any one of claims 18-24.

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