Information indication method and terminal

Abstract

The present disclosure relates to an information indication method and a terminal. The method is executed by a first terminal and comprises: sending a discovery request message or broadcasting a discovery notification message to a second terminal, wherein the discovery request message or the discovery notification message is used to provide an instruction for performing a direct discovery process for a first service, and the discovery request message or the discovery notification message comprises a first parameter used for indicating the service type of the first service. Hence, by sending the discovery request message or broadcasting the discovery notification message to the second terminal, the first terminal can instruct the second terminal to perform a first service-based direct discovery process, and the discovery request message or the discovery notification message comprises a first parameter used for indicating the service type of the first service to ensure normal execution of the first service.

Description

Information indication method and terminal Technical Field

[0001] The present disclosure relates to the field of communication technologies, and in particular to an information indication method and a terminal. Background Art

[0002] Ranging refers to determining the distance between two or more terminals and / or the direction between one terminal (ie, target terminal) and another terminal (ie, reference terminal) through a proximity-based services communication 5 (PC5) interface.

[0003] Summary of the Invention

[0004] The information indication method and terminal provided by the embodiments of the present disclosure are used to solve the problem of how a first terminal instructs a second terminal to perform a direct discovery process based on a first service.

[0005] The embodiments of the present disclosure provide an information indication method and a terminal.

[0006] According to the first aspect of an embodiment of the present disclosure, an information indication method is proposed, which is executed by a first terminal, including: sending a discovery request message or broadcasting a discovery notification message to a second terminal, wherein the discovery request message or the discovery notification message is used to indicate a direct discovery process for a first service, and the discovery request message or the discovery notification message includes a first parameter for indicating a service type of the first service.

[0007] In the above embodiment, the first terminal can instruct the second terminal to perform a direct discovery process based on the first service by sending a discovery request message or broadcasting a discovery notification message to the second terminal. The discovery request message or the discovery notification message includes a first parameter for indicating the service type of the first service to ensure the normal execution of the first service.

[0008] According to the second aspect of an embodiment of the present disclosure, an information indication method is proposed, which is executed by a second terminal, including: receiving a discovery request message sent by a first terminal or a discovery notification message sent by broadcast, wherein the discovery request message or the discovery notification message is used to indicate a direct discovery process for a first service, and the discovery request message or the discovery notification message includes a first parameter for indicating a service type of the first service.

[0009] In the above embodiment, the second terminal may receive a discovery request message sent by the first terminal or a discovery notification message sent by broadcasting to determine to perform a direct discovery process of the first service, thereby ensuring normal execution of the first service.

[0010] According to the third aspect of an embodiment of the present disclosure, an information indication method is proposed, including: a first terminal sends a discovery request message to a second terminal or broadcasts a discovery notification message, wherein the discovery request message or the discovery notification message is used to indicate a direct discovery process for a first service, and the discovery request message or the discovery notification message includes a first parameter for indicating a service type of the first service; the second terminal receives the discovery request message sent by the first terminal or the discovery notification message sent by broadcast.

[0011] According to the fourth aspect of an embodiment of the present disclosure, a first terminal is provided, including: a transceiver module, used to send a discovery request message or broadcast a discovery notification message to a second terminal, wherein the discovery request message or the discovery notification message is used to indicate a direct discovery process for a first service, and the discovery request message or the discovery notification message includes a first parameter for indicating a service type of the first service.

[0012] According to the fifth aspect of an embodiment of the present disclosure, a second terminal is provided, including: a transceiver module, used to receive a discovery request message sent by a first terminal or a discovery notification message sent by broadcast, wherein the discovery request message or the discovery notification message is used to indicate a direct discovery process for a first service, and the discovery request message or the discovery notification message includes a first parameter for indicating a service type of the first service.

[0013] According to a sixth aspect of an embodiment of the present disclosure, a first terminal is provided, comprising: one or more processors; a memory coupled to the processor, wherein the memory stores instructions, and when the instructions are executed by the processor, the first terminal executes the method described in the first aspect.

[0014] According to the seventh aspect of an embodiment of the present disclosure, a second terminal is provided, comprising: one or more processors; a memory coupled to the processor, wherein the memory stores instructions, and when the instructions are executed by the processor, the second terminal is used to execute the method described in the second aspect.

[0015] According to an eighth aspect of an embodiment of the present disclosure, a communication system is provided, including a first terminal and a second terminal, wherein the first terminal is configured to implement the method described in the first aspect, and the second terminal is configured to implement the method described in the second aspect.

[0016] According to a ninth aspect of an embodiment of the present disclosure, a storage medium is provided, wherein the storage medium stores instructions. When the instructions are executed on a communication device, the communication device executes the method described in the first and second aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] FIG1 is an architecture diagram of a communication system provided by an embodiment of the present disclosure;

[0018] FIG2A is a schematic diagram of a process for performing ranging SL positioning terminal discovery using a 5G ProSe-enabled terminal discovered by Model A, provided by an embodiment of the present disclosure;

[0019] FIG2B is a schematic diagram of a process for performing ranging SL positioning terminal discovery using a 5G ProSe-enabled terminal discovered by Model B, provided by an embodiment of the present disclosure;

[0020] FIG2C is a schematic diagram of a process of performing ranging SL positioning group member discovery using a 5G ProSe-enabled terminal discovered by Model A, provided by an embodiment of the present disclosure;

[0021] FIG2D is a schematic diagram of a process of performing ranging SL positioning group member discovery using a 5G ProSe-enabled terminal discovered using Model B, provided by an embodiment of the present disclosure;

[0022] FIG2E is a schematic diagram of a ProSe direct discovery PC5 message type provided by an embodiment of the present disclosure;

[0023] FIG3A is a flow chart of an information indication method provided by an embodiment of the present disclosure;

[0024] FIG3B is a flowchart of another information indication method provided by an embodiment of the present disclosure;

[0025] FIG4A is a schematic diagram showing a new parameter provided by an embodiment of the present disclosure as an independent PC5 service type parameter;

[0026] FIG4B is a schematic diagram of a new parameter provided by an embodiment of the present disclosure, which is a parameter of an extended ProSe direct discovery PC5 message type;

[0027] FIG5A is a flowchart of another information indication method provided by an embodiment of the present disclosure;

[0028] FIG5B is a flowchart of another information indication method provided by an embodiment of the present disclosure;

[0029] FIG6A is a flowchart of another information indication method provided by an embodiment of the present disclosure;

[0030] FIG6B is a flowchart of another information indication method provided by an embodiment of the present disclosure;

[0031] FIG7A is a structural diagram of a first terminal provided by an embodiment of the present disclosure;

[0032] FIG7B is a structural diagram of a second terminal provided by an embodiment of the present disclosure;

[0033] FIG8A is a structural diagram of a communication device provided by an embodiment of the present disclosure;

[0034] FIG8B is a schematic structural diagram of a chip provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0035] The embodiments of the present disclosure provide an information indication method and a terminal.

[0036] In the first aspect, an embodiment of the present disclosure proposes an information indication method, which is executed by a first terminal, including: sending a discovery request message or broadcasting a discovery notification message to a second terminal, wherein the discovery request message or the discovery notification message is used to indicate a direct discovery process for a first service, and the discovery request message or the discovery notification message includes a first parameter for indicating the service type of the first service.

[0037] In the above embodiment, the first terminal can instruct the second terminal to perform a direct discovery process based on the first service by sending a discovery request message or broadcasting a discovery notification message to the second terminal. The discovery request message or the discovery notification message includes a first parameter for indicating the service type of the first service to ensure the normal execution of the first service.

[0038] In combination with some embodiments of the first aspect, in some embodiments, the above method also includes: the first terminal receives a discovery response message sent by the second terminal, wherein the discovery response message is used to respond to the discovery request message sent by the first terminal, and the discovery response message includes a first parameter for indicating the service type of the first service.

[0039] In the above embodiment, the first terminal may receive a terminal discovery response message sent by the second terminal in response to the discovery request message, and determine that the second terminal performs a direct discovery process of the first service to ensure normal execution of the first service.

[0040] In combination with some embodiments of the first aspect, in some embodiments, the first parameter is a new parameter indicating a service type.

[0041] In the above embodiment, the first terminal may use a discovery request message or a discovery notification message including a new parameter indicating the service type to instruct the second terminal to perform a direct discovery process of the first service to ensure normal execution of the first service.

[0042] In combination with some embodiments of the first aspect, in some embodiments, the first parameter corresponds to a PC5 application, and the first parameter is a PC5 application identifier; or the first parameter corresponds to multiple PC5 applications, and the first parameter is a common prefix or common sub-prefix of multiple PC5 application identifiers; or the first parameter is the value of the PC5 application type.

[0043] In combination with some embodiments of the first aspect, in some embodiments, the first parameter is implemented by a second parameter with a specific value, and the second parameter is a content type value of a ProSe direct discovery PC5 message type parameter.

[0044] In the above embodiment, the first terminal can use ProSe to directly discover that the content type value of the PC5 message type parameter is a specific value to instruct the second terminal to perform a direct discovery process of the first service, reuse existing parameters, and indicate by taking specific values ​​of existing parameters. There is no need to use new signaling or messages, which can reduce signaling overhead.

[0045] In combination with some embodiments of the first aspect, in some embodiments, the first service is ranging SL positioning.

[0046] In combination with some embodiments of the first aspect, in some embodiments, the PC5 application is a ProSe application or a V2X application.

[0047] In conjunction with some embodiments of the first aspect, in some embodiments, the direct discovery process includes at least one of the following:

[0048] Direct discovery process of ProSe-enabled terminals;

[0049] The process of discovering terminals with V2X capabilities.

[0050] In conjunction with some embodiments of the first aspect, in some embodiments, the discovery request message includes at least one of the following:

[0051] A direct discovery request message of the first service;

[0052] A group member discovery request message of the first service;

[0053] A direct communication request message of the first service.

[0054] In conjunction with some embodiments of the first aspect, in some embodiments, the discovery notification message includes at least one of the following:

[0055] A discovery notification message of the first service;

[0056] A discovery notification message of a group member of the first service.

[0057] In conjunction with some embodiments of the first aspect, in some embodiments, the discovery response message includes at least one of the following:

[0058] A direct discovery response message of the first service;

[0059] A group member discovery response message of the first service;

[0060] A direct communication response message of the first service.

[0061] In the second aspect, an embodiment of the present disclosure proposes an information indication method, which is executed by a second terminal, including: receiving a discovery request message sent by a first terminal or a discovery notification message sent by broadcast, wherein the discovery request message or the discovery notification message is used to indicate a direct discovery process for a first service, and the discovery request message or the discovery notification message includes a first parameter for indicating a service type of the first service.

[0062] In the above embodiment, the second terminal may receive a discovery request message sent by the first terminal or a discovery notification message sent by broadcasting to determine to perform a direct discovery process of the first service, thereby ensuring normal execution of the first service.

[0063] In combination with some embodiments of the second aspect, in some embodiments, the above method also includes: the second terminal sends a discovery response message to the first terminal, wherein the discovery response message is used to respond to the discovery request message sent by the first terminal, and the discovery response message includes a first parameter for indicating the service type of the first service.

[0064] In combination with some embodiments of the second aspect, in some embodiments, the first parameter is a new parameter indicating a service type.

[0065] In combination with some embodiments of the second aspect, in some embodiments, the first parameter corresponds to a PC5 application, and the first parameter is a PC5 application identifier; or the first parameter corresponds to multiple PC5 applications, and the first parameter is a common prefix or common sub-prefix of multiple PC5 application identifiers; or the first parameter is the value of the PC5 application type.

[0066] In combination with some embodiments of the second aspect, in some embodiments, the first parameter is implemented by a second parameter with a specific value, and the second parameter is a content type value of a ProSe direct discovery PC5 message type parameter.

[0067] In combination with some embodiments of the second aspect, in some embodiments, the first service is ranging SL positioning.

[0068] In combination with some embodiments of the second aspect, in some embodiments, the PC5 application is a ProSe application or a V2X application.

[0069] In conjunction with some embodiments of the second aspect, in some embodiments, the direct discovery process includes at least one of the following:

[0070] Direct discovery process of ProSe-enabled terminals;

[0071] The process of discovering terminals with V2X capabilities.

[0072] In conjunction with some embodiments of the second aspect, in some embodiments, the discovery request message includes at least one of the following:

[0073] A direct discovery request message of the first service;

[0074] A group member discovery request message of the first service.

[0075] In conjunction with some embodiments of the second aspect, in some embodiments, the discovery notification message includes at least one of the following:

[0076] A discovery notification message of the first service;

[0077] A discovery notification message of a group member of the first service;

[0078] A direct communication request message of the first service.

[0079] In conjunction with some embodiments of the second aspect, in some embodiments, the discovery response message includes at least one of the following:

[0080] A direct discovery response message of the first service;

[0081] A group member discovery response message of the first service;

[0082] A direct communication response message of the first service.

[0083] In the third aspect, an embodiment of the present disclosure proposes an information indication method, including: a first terminal sends a discovery request message to a second terminal or broadcasts a discovery notification message, wherein the discovery request message or the discovery notification message is used to indicate a direct discovery process for a first service, and the discovery request message or the discovery notification message includes a first parameter for indicating the service type of the first service; the second terminal receives the discovery request message sent by the first terminal or the discovery notification message sent by broadcast.

[0084] In a fourth aspect, an embodiment of the present disclosure proposes a first terminal, which includes at least one of a transceiver module and a processing module; wherein the first terminal is used to execute the optional implementation method of the first aspect.

[0085] In a fifth aspect, an embodiment of the present disclosure proposes a second terminal, which includes at least one of a transceiver module and a processing module; wherein the second terminal is used to execute the optional implementation method of the second aspect.

[0086] In the sixth aspect, an embodiment of the present disclosure proposes a first terminal, which includes: one or more processors; wherein, a memory coupled to the processor, the memory storing instructions, when the instructions are executed by the processor, enables the first terminal to execute the optional implementation methods of the first aspect and the third aspect.

[0087] In the seventh aspect, an embodiment of the present disclosure proposes a second terminal, which includes: one or more processors; a memory coupled to the processor, which stores instructions. When the instructions are executed by the processor, the second terminal is used to execute the optional implementation methods of the second and fourth aspects.

[0088] In an eighth aspect, an embodiment of the present disclosure proposes a communication system, which includes: a first terminal and a second terminal; wherein the terminal is configured to execute the method described in the optional implementation manner of the first aspect, and the second terminal is configured to execute the method described in the optional implementation manner of the second aspect.

[0089] In a ninth aspect, an embodiment of the present disclosure proposes a storage medium, which stores instructions. When the instructions are executed on a communication device, the communication device executes the method described in the optional implementation of the first and second aspects.

[0090] In a tenth aspect, an embodiment of the present disclosure proposes a program product. When the program product is executed by a communication device, the communication device executes the method described in the optional implementation of the first and second aspects.

[0091] In an eleventh aspect, an embodiment of the present disclosure proposes a computer program, which, when executed on a computer, enables the computer to execute the method described in the optional implementation of the first and second aspects.

[0092] In a twelfth aspect, an embodiment of the present disclosure provides a chip or a chip system, wherein the chip or chip system includes a processing circuit configured to execute the method described in the optional implementation of the first and second aspects above.

[0093] It is understandable that the first terminal, the second terminal, the communication system, the storage medium, the program product, the computer program, the chip, or the chip system are all used to perform the method proposed in the embodiment of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding method and will not be repeated here.

[0094] The embodiments of the present disclosure provide an information indication method and a terminal. In some embodiments, the information indication method, information processing method, communication method, and other terms can be used interchangeably.

[0095] 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.

[0096] 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.

[0097] 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.

[0098] 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.

[0099] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0100] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0101] 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.

[0102] 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.

[0103] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different; for another example, if the description object is "information", then the "first information" and the "second information" can be the same information or different information, and their contents can be the same or different.

[0104] 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.

[0105] 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.

[0106] 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.

[0107] In some embodiments, devices, etc. can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. Terms such as "device", "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", and "subject" can be used interchangeably.

[0108] In some embodiments, "network" can be interpreted as devices included in the network (eg, access network equipment, core network equipment, etc.).

[0109] In some embodiments, the terms "access network device (AN device)", "radio access network device (RAN device)", "base station (BS)", "radio base station" "fixed station", "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission / 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)" and the like may be used interchangeably.

[0110] In some embodiments, the terms "terminal", "terminal device", "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. can be used interchangeably.

[0111] In some embodiments, the access network device, the core network device, or the network device can be replaced by a terminal. For example, the various embodiments of the present disclosure can also be applied to a structure in which the communication between the access network device, the core network device, or the network device and the terminal is replaced by communication between multiple terminals (for example, device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, it is also possible to set the structure in which the terminal has all or part of the functions of the access network device. In addition, terms such as "uplink" and "downlink" can also be replaced by terms corresponding to communication between terminals (for example, "side"). For example, uplink channels, downlink channels, etc. can be replaced by side channels, and uplinks, downlinks, etc. can be replaced by side links.

[0112] In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, the core network device, or the network device may have a structure that has all or part of the functions of the terminal.

[0113] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0114] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0115] In addition, each element, each row, or each column in the table of the embodiment of the present disclosure can be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns can also be implemented as an independent embodiment.

[0116] It should be noted that in the embodiments of the present disclosure, the expressions ranging sidelink positioning, ranging and sidelink positioning, ranging SL positioning, and ranging and SL positioning have the same meaning, and any two of them can be replaced with each other.

[0117] FIG1 is an architecture diagram of a communication system provided by an embodiment of the present disclosure.

[0118] As shown in FIG1 , a communication system 100 includes a terminal 101 and a network device 102 .

[0119] In some embodiments, the terminal 101 includes, 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.

[0120] In some embodiments, the network device 102 may include at least one of an access network device and a core network device.

[0121] In some embodiments, the access network device is, for example, a node or device that accesses a 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 Wi-Fi system, but is not limited thereto.

[0122] In some embodiments, the core network device may be a single device including a first network function, a second network function, etc., or may be a plurality of devices or a group of devices each including all or part of the first network function, the second network function, etc. The network function 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).

[0123] In some embodiments, the first network function is, for example, an access and mobility management function (AMF).

[0124] In some embodiments, the first network function is used for access control and mobility management of the terminal accessing the operator network, for example, including functions such as mobile status management, allocation of user temporary identity, authentication and authorization of users, etc., and its name is not limited to this.

[0125] 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.

[0126] The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1 , or a portion thereof, but are not limited thereto. The entities shown in FIG1 are illustrative only. The communication system may include all or part of the entities shown in FIG1 , or may include other entities outside of FIG1 . The number and form of the entities are arbitrary, and the entities may be physical or virtual. The connection relationships between the entities are illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, including direct or indirect, wired or wireless.

[0127] 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 802.20, ultra-wideband (UWB), and the like. band, UWB), Bluetooth (registered trademark), public land mobile network (PLMN) network, device-to-device (D2D) system, machine-to-machine (M2M) system, Internet of Things (IoT) system, vehicle-to-everything (V2X), systems using other communication methods, and next-generation systems based on them. In addition, multiple systems can also be combined (for example, a combination of LTE or LTE-A and 5G) for application.

[0128] Ranging: refers to determining the distance between multiple terminals and / or the direction between one terminal (i.e., the target terminal) and another terminal (i.e., the reference terminal) through the PC5 interface.

[0129] Positioning terminal: A sidelink (SL) reference terminal whose position is known or can be known using Uu-based positioning. The positioning terminal can be used to determine the position of a target terminal using sidelink positioning.

[0130] SL reference terminal: A terminal that supports the positioning of a target terminal, for example, by sending and / or receiving reference signals for positioning, using a sidelink (SL) to provide positioning-related information, etc.

[0131] Sidelink positioning: Use the PC5 positioning terminal to obtain absolute position, relative position or ranging information.

[0132] SL positioning client terminal: A third-party terminal other than the SL reference terminal and the target terminal, which initiates ranging / sidelink positioning service requests on behalf of the applications resident on it.

[0133] Note 2: The SL positioning client terminal does not have to support ranging / sidelink positioning functions, but communication must be established between the SL positioning client terminal and the SL reference terminal / target terminal through PC5 or the 5G core network (the 5th generation core, 5GC) to transmit service requests and results.

[0134] SL Positioning Server Terminal: A terminal that provides method determination, assistance data distribution, and / or position calculation capabilities for sidelink positioning and ranging-based services. It interacts with other terminals via PC5 as needed to determine ranging / SL positioning methods, distribute assistance data, and calculate the position of the target terminal. If any of these capabilities are supported, a target terminal or SL reference terminal can act as an SL Positioning Server Terminal.

[0135] Target terminal: A terminal that measures distance, direction and / or position using the SL in ranging-based service SL positioning with the support of one or more SL reference terminals.

[0136] The ranging-based service provides the distance between two or more terminals and / or the direction of one terminal (ie, a target terminal) to another terminal (ie, a reference terminal) through PC5 operation.

[0137] Sidelink positioning provides the terminal's absolute position, relative position, or ranging information by using PC5 for positioning. The positioning terminal can be used to determine the absolute position of the target terminal using sidelink positioning.

[0138] Ranging / sidelink positioning operations can be performed via network-assisted, network-based, or terminal-only operations:

[0139] - In network-based operations, 5GC network function (NF)(s) are involved in service request processing and result calculation.

[0140] - In terminal-only operation, service request processing and result calculation are performed by the terminal.

[0141] - In network-assisted operations, 5GC NF(s) participate in service request processing and assist terminals in result calculation.

[0142] Ranging / sidelink positioning service requests can be initiated by terminals (i.e., SL positioning client terminals, target terminals, SL reference terminals), 5GC NFs, location services (LCS) clients, or application functions (AFs). Therefore, ranging / sidelink positioning terminal discovery and selection are required via PC5 to support ranging / sidelink positioning services.

[0143] In the related art, the message used in the terminal discovery process for terminal discovery cannot indicate that the discovery process is for a specific service, which is a problem that needs to be solved urgently.

[0144] In some embodiments, the vehicle-to-X (V2X) communication process over the PC5 reference point supports V2X terminal discovery. When using unicast mode V2X communication, the service type in the Layer 2 link establishment process indicates "ranging / sidelink positioning." When using broadcast or multicast mode V2X communication, the service type indicates "ranging / sidelink positioning."

[0145] Terminal discovery that supports 5G proximity-based services (ProSe) (including commercial and public safety use cases) supports both Mode A (Model A) and Mode B (Model B) discovery. During the direct discovery of ranging / SL positioning terminals, the discovery type indicates "ranging / sidelink positioning"; during the discovery of ranging / SL positioning group members, the application layer group identifier (ID) indicates the distance / sidelink positioning group to which the terminal belongs. Among them, the discovery of Mode A (Model A) can use a single discovery protocol message (Announcement), and the first terminal that publishes the message sends a discovery notification message. The discovery of Mode B (Model B) can use two discovery protocol messages (request and response), and the first terminal (discoverer terminal) sends a discovery request message, and the second terminal (discovered terminal) sends a discovery response message.

[0146] In some embodiments, as shown in FIG2A , a process of performing ranging SL positioning terminal discovery using a terminal with 5G ProSe function discovered using Model A is used.

[0147] In step 1, the first terminal (or announcing UE) (UE-1) sends a ranging / SL positioning notification message. The ranging / SL positioning notification message includes the discovery message type, security protection elements, ranging and sidelink positioning protocol (RSPP) metadata, and the user information ID of the first terminal.

[0148] In some embodiments, as shown in FIG2B , a process for discovering a terminal supporting 5G ProSe for ranging / SL positioning is used in Model B discovery.

[0149] In step 1, the first terminal (or discoverer terminal) (UE-1) sends a ranging / SL positioning request message. The ranging / SL positioning request message includes the discovery message type, security protection element, discoverer terminal user information ID, target information, first terminal user information ID, and optional RSPP metadata information.

[0150] In step 2, the second terminal (also known as the discoverer terminal) that matches the ranging / SL positioning request message (e.g., RSPP metadata information) responds to the first terminal with a ranging / SL positioning response message. The ranging / SL positioning response message includes the discovery message type, security protection element, RSPP metadata information, and the user information ID of the second terminal.

[0151] In some embodiments, as shown in FIG2C , a process supporting 5G ProSe for ranging / SL positioning group member discovery is used in Model A discovery.

[0152] In step 1, the first terminal (or announcing UE) (UE-1) sends a ranging / SL positioning group member discovery notification message. The notification message includes the discovery message type, the user information ID of the first terminal, the group ID, and RSPP metadata information.

[0153] In some embodiments, as shown in FIG2D , a process supporting 5G ProSe for ranging / SL positioning group member discovery is used in Model B discovery.

[0154] In step 1, the first terminal (also called the discoverer terminal) (UE-1) sends a ranging / SL positioning group member discovery request message. The request message includes the discovery message type, group ID, (optional) user information ID of the first terminal, and optional RSPP metadata information.

[0155] In step 2, the second terminal (also referred to as the discoverer terminal) that matches the parameter values ​​(including the first terminal's group ID and user information ID) included in the ranging / SL positioning group member discovery request message responds to the first terminal using a ranging / SL positioning group member discovery response message. The ranging / SL positioning response message includes the discovery message type, the second terminal's user information ID, RSPP metadata information, and the group ID.

[0156] In some embodiments, a 5G ProSe direct discovery message is sent by a terminal through a PC5 interface for open 5G ProSe direct discovery and restricted 5G ProSe direct discovery. The corresponding discovery messages include a ProSe direct discovery PC5 message type (ProSe direct discovery PC5 message type), where the ProSe direct discovery PC5 message type includes three parts: a "discovery type value", a "content type value", and a "mode type value". The message type of each discovery message is identified by different values ​​of the three parameters of the ProSe direct discovery PC5 message type.

[0157] In some embodiments, the value of the ProSe direct discovery PC5 message type (ProSe direct discovery PC5 message type) in the open 5G ProSe direct discovery notification message is: the discovery type value is "Open discovery" and the content type value is "Announcement".

[0158] In some embodiments, the value of the ProSe direct discovery PC5 message type in the restricted 5G ProSe direct discovery notification message is: the discovery type value is "Restricted discovery" and the content type value is "Announcement".

[0159] In some embodiments, the value of the ProSe direct discovery PC5 message type in the restricted 5G ProSe direct discovery request message is: the discovery type value is "Restricted discovery" and the content type value is "Solicitation".

[0160] In some embodiments, the value of the ProSe direct discovery PC5 message type in the restricted 5G ProSe direct discovery response message is: the discovery type value is "Restricted discovery" and the content type value is "response".

[0161] In some embodiments, the value of the ProSe direct discovery PC5 message type in the ProSe PC5 discovery message of the group member discovery notification is: the discovery type value is "Restricted discovery", the content type value is "Group member discovery announcement / group member discovery response", and the model type value is "Model A".

[0162] In some embodiments, the value of the ProSe direct discovery PC5 message type in the ProSe PC5 discovery message of the group member discovery request is: the discovery type value is "Restricted discovery", the content type value is "Group member discovery solicitation", and the model type value is "Model B".

[0163] In some embodiments, the value of the ProSe direct discovery PC5 message type in the ProSe PC5 discovery message of the group member discovery response is: the discovery type value is "Restricted discovery", the content type value is "Group member discovery announcement / group member discovery response", and the model type value is "Model B".

[0164] In some embodiments, the ProSe direct discovery PC5 message type parameters are shown in FIG2E and Table 1 below.

[0165] As shown in FIG2E , ProSe directly discovers that the PC5 message type is a type 1 information element with a length of 1 octet.

[0166] Table 1

[0167] Table 1 above shows the ProSe direct discovery PC5 message type parameters.

[0168] Note 1: Content type "0000" (notification / response) is used for Model A first terminal (announcing) and Model B second terminal (discoverer terminal) operations.

[0169] Note 2: Content type "0100" (terminal-to-network relay discovery notification or terminal-to-network relay discovery response) is used for Model A first terminal (announcing) or Model B second terminal (discovered terminal) operation.

[0170] Note 3: Content type "0110" (group member discovery notification or group member discovery response) is used for Model A first terminal (announcing) or Model B second terminal (discovered terminal) operations.

[0171] In some embodiments, it is not possible to instruct to perform a direct discovery process based on the first service based on the discovery message type, and therefore the first terminal needs to instruct the second terminal to perform a direct discovery process based on the first service.

[0172] Based on this, an embodiment of the present disclosure provides an information indication method and terminal, wherein the method executed by a first terminal includes: sending a discovery request message or broadcasting a discovery notification message to a second terminal, wherein the discovery request message or discovery notification message is used to indicate a direct discovery process for a first service, and the discovery request message or discovery notification message includes a first parameter for indicating the service type of the first service. Thus, the first terminal can instruct the second terminal to perform a direct discovery process based on the first service by sending a discovery request message or broadcasting a discovery notification message to the second terminal, and the discovery request message or discovery notification message includes a first parameter for indicating the service type of the first service, to ensure normal execution of the first service.

[0173] FIG3A is an interactive diagram of an information indication method according to an embodiment of the present disclosure. As shown in FIG3A , the present disclosure embodiment relates to an information indication method, which includes:

[0174] S301A, the first terminal sends a discovery request message to the second terminal.

[0175] In some embodiments, the second terminal receives a discovery request message sent by the first terminal.

[0176] In some embodiments, the discovery request message is used to instruct a direct discovery process of the first service.

[0177] In some embodiments, the first service is ranging SL positioning, but is not limited thereto, and the first service may also be other services.

[0178] In some embodiments, the discovery request message includes a first parameter for indicating a service type of the first service.

[0179] In an embodiment of the present disclosure, a first terminal sends a discovery request message to a second terminal. The discovery request message is used to instruct a direct discovery process for a first service, and the discovery request message includes a first parameter used to indicate a service type of the first service. Thus, the second terminal can identify the discovery request message as a discovery message for a ranging (SL) positioning process.

[0180] In some embodiments, the first parameter is a new parameter indicating a service type.

[0181] In some embodiments, the new parameter is a service type, but is not limited thereto. The new parameter may also have other names.

[0182] In some embodiments, the first parameter corresponds to a proximity service communication PC5 application, and the first parameter is a PC5 application identifier; or the first parameter corresponds to multiple PC5 applications, and the first parameter is a common prefix or common sub-prefix of multiple PC5 application identifiers; or the first parameter is the value of the PC5 application type.

[0183] In the embodiment of the present disclosure, the first parameter is a new parameter indicating a service type. The first parameter corresponds to a PC5 application, and the first parameter may be a PC5 application identifier.

[0184] In the embodiment of the present disclosure, the first parameter is a new parameter indicating a service type, the first parameter corresponds to multiple PC5 applications, and the first parameter is a common prefix or a common sub-prefix of multiple PC5 application identifiers.

[0185] In the embodiment of the present disclosure, the first parameter is a new parameter indicating a service type, and the first parameter PC5 is a value of an application type.

[0186] Exemplarily, the new parameter is a service type. The service type corresponds to one or more PC5 applications. If the service type corresponds to a single PC5 application, the service type can be indicated by a PC5 application identifier. If the service type corresponds to multiple PC5 applications, the service type can be indicated by a common portion, such as a common prefix or common sub-prefix of the ProSe application identifier assigned to ProSe applications of the same service type. Alternatively, the service type can be a PC5 application type value. The service type can be separated from the encoding of the application identifier, where the service type can be defined independently of the application layer.

[0187] Exemplarily, as shown in FIG4A , the new parameter is a schematic diagram of an independent PC5 service type parameter.

[0188] In some embodiments, the service type value is included in the ProSe direct discovery message together with the existing ProSe direct discovery PC5 message type to identify the ProSe direct discovery message type for the first service.

[0189] In some embodiments, the service type value may be included in the ProSe direct discovery message as a sub-parameter of the extended ProSe direct discovery PC5 message type to identify the ProSe direct discovery message type for the first service.

[0190] Exemplarily, as shown in FIG4B , the new parameters are a schematic diagram of extended ProSe direct discovery PC5 message type parameters.

[0191] In some embodiments, the service type may be a PC5 service type, or may also be a ProSe service type or a V2X service type.

[0192] In some embodiments, the first parameter is implemented by a second parameter having a specific value, where the second parameter is a content type value of a ProSe Direct Discovery PC5 message type parameter.

[0193] In the embodiment of the present disclosure, the second parameter is the content type value of the ProSe direct discovery PC5 message type parameter.

[0194] In the embodiment of the present disclosure, the “content type value” of the “ProSe direct discovery PC5 message type parameter” is extended to identify a message for PC5 direct discovery for ranging SL positioning.

[0195] As shown in FIG2E , ProSe directly discovers that the PC5 message type is a type 1 information element with a length of 1 octet.

[0196] In some embodiments, the "content type value" of the "ProSe direct discovery PC5 message type parameter" is extended, for example, as shown in Table 2 below, the "discovery type value" and "discovery mode value" of the "ProSe direct discovery PC5 message type parameter" can be directly reused and taken as required.

[0197] Table 2

[0198] It should be noted that each element, each row, or each column in the table of the embodiment of the present disclosure can be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns can also be implemented as an independent embodiment.

[0199] It should be noted that the content type "1001" (group member discovery notification of the ranging sidelink positioning service / group member discovery response of the ranging sidelink positioning service) is used for the group member discovery notification message of the Model A first terminal (announcing) or the group member discovery response message of the Model B second terminal (the discovered terminal), but is not limited to this. The content type "1001" can also be used to indicate other operations.

[0200] It should be noted that the content type "1010" (group member discovery request for ranging sidelink positioning service) is used for the discovery request message of the Model B first terminal (discoverer terminal), but is not limited to this. The content type "1010" can also be used to indicate other operations.

[0201] It should be noted that the content type "1110" (terminal discovery notification of ranging sidelink positioning service / terminal discovery response of ranging sidelink positioning service) is used for the discovery notification message of the first terminal (announcing) of Model A or the discovery response message of the second terminal of Model B (the discovered terminal), but is not limited to this. The content type "1110" can also be used to indicate other operations.

[0202] It should be noted that the content type "1111" (terminal discovery request for ranging sidelink positioning service) is used for the discovery request message of the Model B first terminal (discoverer terminal), but is not limited to this. The content type "1111" can also be used to indicate other operations.

[0203] It should also be noted that the content type can also be other values ​​other than the examples in Table 2 above to indicate the content indicated by any one of "1001", "1010", "1110", and "1111". The embodiments of the present disclosure do not impose specific restrictions on this.

[0204] In some embodiments, the PC5 application is a ProSe application or a vehicle-to-everything (V2X) application, but is not limited thereto and may also be other applications.

[0205] In some embodiments, the direct discovery process includes at least one of the following:

[0206] Direct discovery process of ProSe-enabled terminals;

[0207] The process of discovering terminals with V2X capabilities.

[0208] In the embodiments of the present disclosure, for V2X-capable terminals, the V2X service type corresponding to the V2X application identifier can be used to identify messages sent for ranging SL positioning. However, if the PC5 service type is shared with V2X-capable terminals and ProSe-capable terminals to identify messages for ranging SL positioning, an additional PC5 service type indicating the ranging SL positioning service will be included in the relevant process.

[0209] In some embodiments, the discovery request message includes at least one of the following:

[0210] A direct discovery request message of the first service;

[0211] A group member discovery request message of the first service;

[0212] A direct communication request message of the first service.

[0213] In some embodiments, as shown in Figure 2B, in the process of using mode B (Model B) to discover a terminal that supports 5G ProSe for ranging SL positioning terminal discovery, the discovery request message sent by the first terminal is a direct discovery request message of the first service, for example, the direct discovery request message of the first service is a Ranging / SL Positioning Solicitation message.

[0214] In some embodiments, as shown in Figure 2B, the direct discovery request message of the first service also includes at least one of the discovery message type, security protection element, user information ID of the first terminal, group ID, user information ID of the second terminal and RSPP metadata information.

[0215] In some embodiments, as shown in Figure 2D, in the process of using Model B to discover a terminal that supports 5G ProSe to perform ranging SL positioning group member discovery, the discovery request message sent by the first terminal is a group member discovery request message of the first service, for example, the group member discovery request message of the first service is a Ranging / SL Positioning Group member discovery Solicitation message.

[0216] In some embodiments, as shown in FIG2D , the group member discovery request message of the first service further includes at least one of the discovery message type, the user information ID of the first terminal, the group ID, the second user information ID, and RSPP metadata information.

[0217] In some embodiments, in the terminal discovery process of terminal ranging SL positioning with V2X function, the discovery request message sent by the first terminal is a direct communication request message of the first service.

[0218] In the various embodiments as above, the discovery message type may be, for example, the above service type + the existing ProSe direct discovery PC5 message type, or an extended ProSe direct discovery PC5 message type including the service type, or a ProSe direct discovery PC5 message type with an extended content type value.

[0219] S202A: The second terminal sends a discovery response message to the first terminal.

[0220] In some embodiments, the first terminal receives a discovery response message sent by the second terminal.

[0221] In some embodiments, the discovery response message is used to respond to the discovery request message sent by the first terminal.

[0222] In some embodiments, the discovery response message includes a first parameter indicating a service type of the first service.

[0223] For the description of the first parameter, please refer to the description in S201A above, which will not be repeated here.

[0224] In some embodiments, the discovery response message includes at least one of the following:

[0225] A direct discovery response message of the first service;

[0226] A group member discovery response message of the first service;

[0227] A direct communication response message of the first service.

[0228] In some embodiments, as shown in Figure 2B, in the process of using Model B to discover a terminal supporting 5G ProSe for ranging SL positioning terminal discovery, the discovery response message sent by the second terminal is a direct discovery response message (Ranging / SL Positioning Response message) of the first service.

[0229] In some embodiments, as shown in FIG2B , the direct discovery response message of the first service further includes at least one of a discovery message type, a security protection element, RSPP metadata information, and a user information ID of the second terminal.

[0230] In some embodiments, as shown in Figure 2D, in the process of using Model B to discover the terminal that supports 5G ProSe to perform ranging SL positioning group member discovery, the discovery response message sent by the second terminal is the group member discovery response message (Ranging / SL Positioning Group member discovery Response message) of the first service.

[0231] In some embodiments, as shown in FIG2D , the group member discovery response message of the first service further includes at least one of a discovery message type, a user information ID of the second terminal, RSPP metadata information, and a group ID.

[0232] In some embodiments, in the terminal discovery process of terminal ranging SL positioning with V2X function, the discovery response message sent by the second terminal is a direct communication response message of the first service.

[0233] In the various embodiments as above, the discovery message type may be, for example, the above service type + the existing ProSe direct discovery PC5 message type, or an extended ProSe direct discovery PC5 message type including the service type, or a ProSe direct discovery PC5 message type with an extended content type value.

[0234] In some embodiments, the names of information, etc. are not limited to the names described in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "codeword", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

[0235] In some embodiments, terms such as "uplink", "uplink", "physical uplink" can be interchangeable with each other, and terms such as "downlink", "downlink", "physical downlink" can be interchangeable with each other, and terms such as "side", "sidelink", "side communication", "sidelink communication", "direct connection", "direct link", "direct communication", "direct link communication" can be interchangeable with each other.

[0236] In some embodiments, terms such as "moment", "time point", "time", and "time position" can be replaced with each other, and terms such as "duration", "period", "time window", "window", and "time" can be replaced with each other.

[0237] In some embodiments, "obtain", "get", "get", "receive", "transmit", "bidirectional transmission", "send and / or receive" can be interchangeable, and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from higher layers, obtaining by self-processing, autonomous implementation, etc.

[0238] In some embodiments, terms such as "send", "transmit", "report", "download", "transmit", "bidirectional transmission", "send and / or receive" can be used interchangeably.

[0239] In some embodiments, terms such as "certain", "preset", "preset", "setting", "indicated", "a certain", "any", and "first" can be interchangeable. "Specific A", "preset A", "preset A", "setting A", "indicated A", "a certain A", "any A", and "first A" can be interpreted as A pre-specified in a protocol, etc., or as A obtained through setting, configuration, or indication, etc., or as specific A, a certain A, any A, or first A, etc., but not limited to this.

[0240] The communication method involved in the embodiment of the present disclosure may include at least one of S301A to S302A. For example, S301A may be implemented as an independent embodiment, and S302A may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0241] In some embodiments, S302A is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0242] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 3A .

[0243] FIG3B is an interactive diagram of an information indication method according to an embodiment of the present disclosure. As shown in FIG3B , the present disclosure embodiment relates to an information indication method, which includes:

[0244] S301B: The first terminal broadcasts a discovery notification message to the second terminal.

[0245] In some embodiments, the second terminal receives the discovery notification message sent by the first terminal.

[0246] In some embodiments, the discovery notification message is used to instruct a direct discovery process of the first service.

[0247] In some embodiments, the first service is ranging SL positioning, but is not limited thereto, and the first service may also be other services.

[0248] In some embodiments, the discovery notification message includes a first parameter for indicating a service type of the first service.

[0249] In an embodiment of the present disclosure, a first terminal sends a discovery notification message to a second terminal. The discovery notification message is used to indicate a direct discovery process for a first service, and the discovery notification message includes a first parameter used to indicate a service type of the first service. Thus, the second terminal can identify the discovery notification message as a discovery message for a ranging (SL) positioning process.

[0250] In some embodiments, the first parameter is a new parameter indicating a service type.

[0251] In some embodiments, the new parameter is a service type, but is not limited thereto. The new parameter may also have other names.

[0252] In some embodiments, the first parameter corresponds to a proximity service communication PC5 application, and the first parameter is a PC5 application identifier; or the first parameter corresponds to multiple PC5 applications, and the first parameter is a common prefix or common sub-prefix of multiple PC5 application identifiers; or the first parameter is the value of the PC5 application type.

[0253] In the embodiment of the present disclosure, the first parameter is a new parameter indicating a service type. The first parameter corresponds to a PC5 application, and the first parameter may be a PC5 application identifier.

[0254] In the embodiment of the present disclosure, the first parameter is a new parameter indicating a service type, the first parameter corresponds to multiple PC5 applications, and the first parameter is a common prefix or a common sub-prefix of multiple PC5 application identifiers.

[0255] In the embodiment of the present disclosure, the first parameter is a new parameter indicating a service type, and the first parameter PC5 is a value of an application type.

[0256] Exemplarily, the new parameter is a service type. The service type corresponds to one or more PC5 applications. If the service type corresponds to a single PC5 application, the service type can be indicated by a PC5 application identifier. If the service type corresponds to multiple PC5 applications, the service type can be indicated by a common portion, such as a common prefix or common sub-prefix of the ProSe application identifier assigned to ProSe applications of the same service type. Alternatively, the service type can be a PC5 application type value. The service type can be separated from the encoding of the application identifier, where the service type can be defined independently of the application layer.

[0257] Exemplarily, as shown in FIG4A , the new parameter is a schematic diagram of an independent PC5 service type parameter.

[0258] In some embodiments, the service type value is included in the ProSe direct discovery message together with the existing ProSe direct discovery PC5 message type to identify the ProSe direct discovery message type for the first service.

[0259] In some embodiments, the service type value may be included in the ProSe direct discovery message as a sub-parameter of the extended ProSe direct discovery PC5 message type to identify the ProSe direct discovery message type for the first service.

[0260] Exemplarily, as shown in FIG4B , the new parameters are a schematic diagram of extended ProSe direct discovery PC5 message type parameters.

[0261] In some embodiments, the service type may be a PC5 service type, or may also be a ProSe service type or a V2X service type.

[0262] In some embodiments, the first parameter is implemented by a second parameter having a specific value, where the second parameter is a content type value of a ProSe Direct Discovery PC5 message type parameter.

[0263] In the embodiment of the present disclosure, the second parameter is the content type value of the ProSe direct discovery PC5 message type parameter.

[0264] In the embodiment of the present disclosure, the “content type value” of the “ProSe direct discovery PC5 message type parameter” is extended to identify a message for PC5 direct discovery for ranging SL positioning.

[0265] As shown in FIG2E , ProSe directly discovers that the PC5 message type is a type 1 information element with a length of 1 octet.

[0266] In some embodiments, the “Content Type Value” of the “ProSe Direct Discovery PC5 Message Type Parameter” is extended as shown in Table 2 above.

[0267] In some embodiments, the PC5 application is a ProSe application or a vehicle-to-everything (V2X) application, but is not limited thereto and may also be other applications.

[0268] In some embodiments, the direct discovery process includes at least one of the following:

[0269] Direct discovery process of ProSe-enabled terminals;

[0270] The process of discovering terminals with V2X capabilities.

[0271] In the embodiments of the present disclosure, for V2X-capable terminals, the V2X service type corresponding to the V2X application identifier can be used to identify messages sent for ranging SL positioning. However, if the PC5 service type is shared with V2X-capable terminals and ProSe-capable terminals to identify messages for ranging SL positioning, an additional PC5 service type indicating the ranging SL positioning service will be included in the relevant process.

[0272] In some embodiments, the discovery notification message includes at least one of the following:

[0273] A discovery notification message of the first service;

[0274] A discovery notification message of a group member of the first service.

[0275] In some embodiments, as shown in Figure 2A, in the process of using mode A (Model A) to discover a terminal that supports 5G ProSe for ranging SL positioning terminal discovery, the discovery request message sent by the first terminal is a direct discovery request message of the first service, for example, the direct discovery request message of the first service is a Ranging / SL Positioning Announcement message.

[0276] In some embodiments, as shown in Figure 2A, the first terminal (UE-1) sends a discovery notification message of the first service, and the discovery notification message of the first service also includes at least one of the discovery message type, security protection element, RSPP metadata information and user information ID of the first terminal.

[0277] In some embodiments, as shown in Figure 2C, in the process of using Model A to discover a terminal that supports 5G ProSe to perform ranging SL positioning terminal discovery, the discovery request message sent by the first terminal is a discovery notification message of the group member of the first service, for example, the discovery notification message of the group member of the first service is a Ranging / SL Positioning Group member discovery Announcement message.

[0278] In some embodiments, as shown in Figure 2C, the first terminal (UE-1) sends a discovery notification message of the group members of the first service, and the discovery notification message of the group members of the first service also includes at least one of the discovery message type, the user information ID of the first terminal, the group ID and RSPP metadata information.

[0279] In the various embodiments as above, the discovery message type may be, for example, the above service type + the existing ProSe direct discovery PC5 message type, or an extended ProSe direct discovery PC5 message type including the service type, or a ProSe direct discovery PC5 message type with an extended content type value.

[0280] FIG5A is an interactive diagram of an information indication method according to an embodiment of the present disclosure. As shown in FIG5A , the embodiment of the present disclosure relates to an information indication method, which is executed by a first terminal and includes:

[0281] S501A, sending a discovery request message.

[0282] Among them, the optional implementation of S501A can refer to the optional implementation of S301A in Figure 3A and other related parts in the embodiment involved in Figure 3A, which will not be repeated here.

[0283] In some embodiments, the first terminal sends a discovery request message to the second terminal, but is not limited thereto and the discovery request message may also be sent to other entities.

[0284] In some embodiments, the discovery request message is used to instruct a direct discovery process of the first service, and the discovery request message includes a first parameter used to indicate a service type of the first service.

[0285] In some embodiments, the first parameter is a new parameter indicating a service type.

[0286] In some embodiments, the first parameter corresponds to a proximity service communication PC5 application, and the first parameter is a PC5 application identifier; or the first parameter corresponds to multiple PC5 applications, and the first parameter is a common prefix or common sub-prefix of multiple PC5 application identifiers; or the first parameter is the value of the PC5 application type.

[0287] In some embodiments, the first parameter is implemented by a second parameter having a specific value, where the second parameter is a content type value of a neighbor service ProSe direct discovery PC5 message type parameter.

[0288] In some embodiments, the first service is ranging sidelink (SL) positioning.

[0289] In some embodiments, the PC5 application is a ProSe application or a vehicle-to-everything (V2X) application.

[0290] In some embodiments, the direct discovery process includes at least one of the following:

[0291] Direct discovery process of ProSe-enabled terminals;

[0292] The process of discovering terminals with V2X capabilities.

[0293] In some embodiments, the discovery request message includes at least one of the following:

[0294] A direct discovery request message of the first service;

[0295] A group member discovery request message of the first service;

[0296] A direct communication request message of the first service.

[0297] S502A, obtain a discovery response message.

[0298] Among them, the optional implementation of S502A can refer to the optional implementation of S302A in Figure 3A and other related parts in the embodiment involved in Figure 3A, which will not be repeated here.

[0299] In some embodiments, the first terminal receives a discovery response message sent by the second terminal, but is not limited thereto and may also receive a discovery response message sent by other entities.

[0300] In some embodiments, the first terminal obtains a discovery response message specified by the protocol.

[0301] In some embodiments, the first terminal obtains a discovery response message from an upper layer(s).

[0302] In some embodiments, the first terminal performs processing to obtain a discovery response message.

[0303] In some embodiments, S502A is omitted, and the first terminal autonomously implements the function indicated by the discovery response message, or the above function is default or acquiescent.

[0304] In some embodiments, the discovery response message is used to respond to the discovery request message sent by the first terminal, and the discovery response message includes a first parameter used to indicate a service type of the first service.

[0305] For the description of the first parameter, please refer to the description in the above embodiment, which will not be repeated here.

[0306] In some embodiments, the discovery response message includes at least one of the following:

[0307] A direct discovery response message of the first service;

[0308] A group member discovery response message of the first service;

[0309] A direct communication response message of the first service.

[0310] The communication method involved in the embodiments of the present disclosure may include at least one of S501A to S502A. For example, S501A may be implemented as an independent embodiment, and S502A may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0311] In some embodiments, S502A is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0312] FIG5B is an interactive diagram of an information indication method according to an embodiment of the present disclosure. As shown in FIG5B , the embodiment of the present disclosure relates to an information indication method, which is executed by a first terminal and includes:

[0313] S501B, sending a discovery notification message.

[0314] Among them, the optional implementation of S501B can refer to the optional implementation of S301B in Figure 3B and other related parts in the embodiment involved in Figure 3B, which will not be repeated here.

[0315] In some embodiments, the first terminal sends a discovery notification message to the second terminal, but is not limited thereto, and the discovery notification message may also be sent to other entities.

[0316] In some embodiments, the discovery notification message is used to instruct a direct discovery process of the first service, and the discovery notification message includes a first parameter used to indicate a service type of the first service.

[0317] In some embodiments, the first parameter is a new parameter indicating a service type.

[0318] In some embodiments, the first parameter corresponds to a proximity service communication PC5 application, and the first parameter is a PC5 application identifier; or the first parameter corresponds to multiple PC5 applications, and the first parameter is a common prefix or common sub-prefix of multiple PC5 application identifiers; or the first parameter is the value of the PC5 application type.

[0319] In some embodiments, the first parameter is implemented by a second parameter having a specific value, where the second parameter is a content type value of a neighbor service ProSe direct discovery PC5 message type parameter.

[0320] In some embodiments, the first service is ranging sidelink (SL) positioning.

[0321] In some embodiments, the PC5 application is a ProSe application or a vehicle-to-everything (V2X) application.

[0322] In some embodiments, the discovery notification message includes at least one of the following:

[0323] A discovery notification message of the first service;

[0324] A discovery notification message of a group member of the first service.

[0325] FIG6A is an interactive diagram of an information indication method according to an embodiment of the present disclosure. As shown in FIG6A , the embodiment of the present disclosure relates to an information indication method, which is executed by a second terminal and includes:

[0326] S601A, obtain a discovery request message.

[0327] Among them, the optional implementation of S601A can refer to the optional implementation of S301A in Figure 3A and other related parts in the embodiment involved in Figure 3A, which will not be repeated here.

[0328] In some embodiments, the second terminal receives the discovery request message sent by the first terminal, but is not limited thereto and may also receive the discovery request message sent by other entities.

[0329] In some embodiments, the second terminal obtains a discovery request message specified by the protocol.

[0330] In some embodiments, the second terminal obtains the discovery request message from an upper layer(s).

[0331] In some embodiments, the second terminal performs processing to obtain the discovery request message.

[0332] In some embodiments, S601A is omitted, and the second terminal autonomously implements the function indicated by the discovery request message, or the above function is default or by default.

[0333] In some embodiments, the discovery request message is used to instruct a direct discovery process of the first service, and the discovery request message includes a first parameter used to indicate a service type of the first service.

[0334] In some embodiments, the first parameter is a new parameter indicating a service type.

[0335] In some embodiments, the first parameter corresponds to a proximity service communication PC5 application, and the first parameter is a PC5 application identifier; or the first parameter corresponds to multiple PC5 applications, and the first parameter is a common prefix or common sub-prefix of multiple PC5 application identifiers; or the first parameter is the value of the PC5 application type.

[0336] In some embodiments, the first parameter is implemented by a second parameter having a specific value, where the second parameter is a content type value of a neighbor service ProSe direct discovery PC5 message type parameter.

[0337] In some embodiments, the first service is ranging sidelink (SL) positioning.

[0338] In some embodiments, the PC5 application is a ProSe application or a vehicle-to-everything (V2X) application.

[0339] In some embodiments, the direct discovery process includes at least one of the following:

[0340] Direct discovery process of ProSe-enabled terminals;

[0341] The process of discovering terminals with V2X capabilities.

[0342] In some embodiments, the discovery request message includes at least one of the following:

[0343] A direct discovery request message of the first service;

[0344] A group member discovery request message of the first service;

[0345] A direct communication request message of the first service.

[0346] S602A, send a discovery response message.

[0347] Among them, the optional implementation of S602A can refer to the optional implementation of S302A in Figure 3A and other related parts in the embodiment involved in Figure 3A, which will not be repeated here.

[0348] In some embodiments, the second terminal sends a discovery response message to the first terminal, but is not limited thereto and may also send a discovery response message to other entities.

[0349] In some embodiments, the discovery response message is used to respond to the discovery request message sent by the first terminal, and the discovery response message includes a first parameter used to indicate a service type of the first service.

[0350] For the description of the first parameter, please refer to the description in the above embodiment, which will not be repeated here.

[0351] In some embodiments, the discovery response message includes at least one of the following:

[0352] A direct discovery response message of the first service;

[0353] A group member discovery response message of the first service;

[0354] A direct communication response message of the first service.

[0355] The communication method involved in the embodiments of the present disclosure may include at least one of S601A to S602A. For example, S601A may be implemented as an independent embodiment, and S602A may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0356] In some embodiments, S602A is optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0357] FIG6B is an interactive diagram of an information indication method according to an embodiment of the present disclosure. As shown in FIG6B , the embodiment of the present disclosure relates to an information indication method, which is executed by a second terminal and includes:

[0358] S601B, obtain a discovery notification message.

[0359] Among them, the optional implementation of S601B can refer to the optional implementation of S301B in Figure 3B and other related parts in the embodiment involved in Figure 3B, which will not be repeated here.

[0360] In some embodiments, the second terminal receives the discovery notification message sent by the first terminal, but is not limited thereto and may also receive the discovery notification message sent by other entities.

[0361] In some embodiments, the second terminal obtains a discovery notification message specified by a protocol.

[0362] In some embodiments, the second terminal obtains the discovery notification message from an upper layer(s).

[0363] In some embodiments, the second terminal performs processing to obtain the discovery notification message.

[0364] In some embodiments, S601B is omitted, and the second terminal autonomously implements the function indicated by the discovery notification message, or the above function is default or by default.

[0365] In some embodiments, the discovery notification message is used to instruct a direct discovery process of the first service, and the discovery request message includes a first parameter used to indicate a service type of the first service.

[0366] In some embodiments, the first parameter is a new parameter indicating a service type.

[0367] In some embodiments, the first parameter corresponds to a proximity service communication PC5 application, and the first parameter is a PC5 application identifier; or the first parameter corresponds to multiple PC5 applications, and the first parameter is a common prefix or common sub-prefix of multiple PC5 application identifiers; or the first parameter is the value of the PC5 application type.

[0368] In some embodiments, the first parameter is implemented by a second parameter having a specific value, where the second parameter is a content type value of a neighbor service ProSe direct discovery PC5 message type parameter.

[0369] In some embodiments, the first service is ranging sidelink (SL) positioning.

[0370] In some embodiments, the PC5 application is a ProSe application or a vehicle-to-everything (V2X) application.

[0371] In some embodiments, the discovery notification message includes at least one of the following:

[0372] A discovery notification message of the first service;

[0373] A discovery notification message of a group member of the first service.

[0374] To facilitate understanding of the embodiments of the present disclosure, an exemplary embodiment is provided.

[0375] In an exemplary embodiment, a solution is proposed to identify messages for direct discovery by PC5 for ranging SL positioning.

[0376] A method for identifying a message discovered directly by PC5 for ranging SL positioning includes:

[0377] In some embodiments, a method is defined to identify the message that PC5 directly discovers for ranging SL positioning, defining a new message or reusing an existing message.

[0378] In other embodiments, a parameter with a specific value is used to identify each message that the PC 5 directly sees for ranging SL positioning, and the message is processed accordingly in a corresponding process.

[0379] In some embodiments, a new parameter is defined to identify the message that PC5 directly discovers for ranging SL positioning.

[0380] For example, the service type parameter indicates a type of PC5 service, which identifies different types of PC5 services. The ranging SL positioning service is a type of PC5 service identified by a value of the service type, including:

[0381] The service type corresponds to one or more PC5 applications. If the service type corresponds to a single PC5 application, the service type may be indicated by a PC5 application identifier. If the service type corresponds to multiple PC5 applications, the service type may be a common portion, such as a common prefix or sub-prefix of the ProSe application identifiers assigned to ProSe applications of the same service type. Alternatively, the service type may be a PC5 application type value, and the service type may be separated from the encoding of the application identifier, where the service type may be defined independently of the application layer.

[0382] In some embodiments, the traffic type may be encoded as a separate parameter or as a sub-parameter of another parameter.

[0383] In some embodiments, the service type may be defined as a PC5 service type, as shown in FIG4A or 4B , or may be defined as a ProSe service type or a V2X service type.

[0384] In some embodiments, the service type may be shared between terminals supporting V2X and terminals supporting ProSe.

[0385] In some embodiments, as shown in FIG2A , a process of terminal discovery using a terminal supporting 5G ProSe for ranging SL positioning is used in Model A discovery.

[0386] Step 1: The first terminal (UE-1) sends a ranging SL positioning notification message. The ranging SL positioning notification message includes the type of discovery message, the service type indicating ranging SL positioning or the ProSe application identifier indicating ranging SL positioning, a security protection element, RSPP metadata information, and the user information ID of the first terminal. The type of discovery message is identified by the service type, the discovery type value of the ProSe direct discovery PC5 message type, the content type value, and the mode type value. The service type indicates the ranging SL positioning service type, the discovery type value is "Restricted discovery", the content type value is "Announcement", and the mode type value is "Model A".

[0387] In some embodiments, as shown in FIG2B , a process for discovering a terminal that supports 5G ProSe for ranging SL positioning is used in Model B discovery.

[0388] Step 1: The first terminal (also known as the discoverer terminal) (UE-1) sends a ranging / SL positioning request message. The ranging SL positioning request message includes the type of discovery message, the service type indicating ranging SL positioning or the ProSe application identifier indicating ranging SL positioning, a security protection element, an optional user information ID of the second terminal, target information, the user information ID of the first terminal, and optional RSPP metadata information. The type of the discovery message is identified by the service type, the discovery type value of the ProSe direct discovery PC5 message type, the content type value, and the mode type value, wherein the service type indicates the ranging SL positioning service type, the discovery type value is "Restricted discovery", the content type value is "Solicitation", and the mode type value is "Model B".

[0389] In step 2, the second terminal (also referred to as the discoverer terminal) that matches the ranging SL positioning request message (e.g., RSPP metadata information) responds to the first terminal using a ranging SL positioning response message. The ranging SL positioning response message includes a discovery message type, a service type indicating ranging SL positioning or a ProSe application identifier indicating ranging SL positioning, a security protection element, RSPP metadata information, and a user information ID of the second terminal. The type of the discovery message is identified by the service type, the discovery type value of the ProSe direct discovery PC5 message type, the content type value, and the mode type value. The service type indicates the ranging SL positioning service type, the discovery type value is "Restricted discovery", the content type value is "response", and the mode type value is "Model B".

[0390] In some embodiments, as shown in FIG2C , a process of group member discovery that supports 5G ProSe for ranging SL positioning is used in Model A discovery.

[0391] Step 1: The first terminal sends a ranging SL positioning group member discovery notification message. The notification message includes the type of discovery message, the service type indicating ranging SL positioning or the ProSe application identifier indicating ranging SL positioning, the user information ID of the first terminal, the group ID, and RSPP metadata information. The type of discovery message is jointly identified by the service type, the discovery type value of the ProSe direct discovery PC5 message type, the content type value, and the mode type value. The service type indicates the ranging SL positioning service type, the discovery type value is "Restricted discovery", the content type value is "Group member discovery announcement", and the mode type value is "Model A".

[0392] In some embodiments, as shown in FIG2D , a process of discovering group members that supports 5G ProSe for ranging SL positioning is used in Model B discovery.

[0393] Step 1. The first terminal (also called the discoverer terminal) (UE-1) sends a ranging SL positioning group member discovery request message. The request message includes the type of discovery message, the service type indicating ranging SL positioning or the ProSe application identifier indicating ranging SL positioning, the user information ID of the first terminal, the group ID, (optional) the user information ID of the second terminal, and optional RSPP metadata information. The type of the discovery message is jointly identified by the service type, the discovery type value of the ProSe direct discovery PC5 message type, the content type value, and the mode type value, wherein the service type indicates the ranging SL positioning service type, the discovery type value is "Restricted discovery", the content type value is "Group member discovery solicitation", and the mode type value is "Model B".

[0394] In step 2, the second terminal that matches the parameter value contained in the ranging SL positioning group member discovery request message (including the group ID and user information ID of the second terminal) will respond to the first terminal with a ranging SL positioning group member discovery response message. The ranging SL positioning response message includes the type of discovery message, the service type indicating ranging SL positioning or the ProSe application identifier indicating ranging SL positioning, the user information ID of the second terminal, RSPP metadata information, and the group ID. The type of the discovery message is jointly identified by the service type, the discovery type value of the ProSe direct discovery PC5 message type, the content type value, and the mode type value, wherein the service type indicates the ranging SL positioning service type, the discovery type value is "Restricted discovery", the content type value is "group member discovery response", and the mode type value is "Model B".

[0395] In some embodiments, terminal ranging and SL positioning of a terminal with V2X functionality is performed.

[0396] For V2X-capable terminals, the V2X service type corresponding to the V2X application identifier can be used to identify the message sent for ranging SL positioning. However, if the PC5 service type is shared by V2X-capable terminals and ProSe-capable terminals to identify messages for ranging SL positioning, an additional PC5 service type indicating the ranging SL positioning service will be included in the relevant process.

[0397] In the embodiment of the present disclosure, while supporting ranging SL positioning through PC5, the message defined for ranging SL positioning can be directly discovered by PC5 so as to perform specific processing.

[0398] In some embodiments, the "Content Type Value" of the "ProSe Direct Discovery PC5 Message Type Parameter" is extended to identify a message for PC5 direct discovery for ranging SL positioning.

[0399] In some embodiments, as shown in FIG2E , the ProSe Direct Discovery PC5 message type is a Type 1 information element with a length of 1 octet.

[0400] In some embodiments, as shown in Table 2 above, the “Content Type Value” of the “ProSe Direct Discovery PC5 Message Type Parameter”.

[0401] The embodiments of the present disclosure also propose an apparatus for implementing any of the above methods. For example, an apparatus is proposed, and the above apparatus includes units or modules for implementing each step executed by a terminal (for example, a first terminal, a second terminal) in any of the above methods.

[0402] 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.

[0403] In the embodiments of the present disclosure, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction reading and execution capabilities, 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. The logical relationship of the above-mentioned hardware circuit is fixed or reconfigurable. For example, the processor is a hardware circuit implemented by 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.

[0404] FIG7A is a schematic diagram of the structure of a first terminal according to an embodiment of the present disclosure. As shown in FIG7A , the first terminal 10 may include at least one of a transceiver module 11 and a processing module 12 .

[0405] In some embodiments, the above-mentioned transceiver module 11 is used to send a discovery request message or broadcast a discovery notification message to the second terminal, wherein the discovery request message or the discovery notification message is used to indicate a direct discovery process for the first service, and the discovery request message or the discovery notification message includes a first parameter for indicating the service type of the first service.

[0406] The transceiver module 11 is configured to execute at least one of the communication steps (e.g., S301A to S302A, S301B, but not limited thereto) such as sending and / or receiving performed by the first terminal 10 in any of the above methods, and will not be described in detail here. Optionally, the processing module 12 is configured to execute at least one of the other steps (e.g., S301A to S302A, S301B, but not limited thereto) performed by the first terminal 10 in any of the above methods, and will not be described in detail here.

[0407] 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.

[0408] 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.

[0409] FIG7B is a schematic diagram of the structure of the second terminal proposed in an embodiment of the present disclosure. As shown in FIG7B , the second terminal 20 may include at least one of a transceiver module 21 and a processing module 22 .

[0410] In some embodiments, the above-mentioned transceiver module 21 is used to receive a discovery request message sent by the first terminal or a discovery notification message sent by broadcast, wherein the discovery request message or the discovery notification message is used to indicate a direct discovery process for the first service, and the discovery request message or the discovery notification message includes a first parameter for indicating the service type of the first service.

[0411] The transceiver module 21 is configured to execute at least one of the communication steps (e.g., S301A-S302A, S301B, but not limited thereto) performed by the second terminal 20 in any of the above methods, and will not be described in detail here. Optionally, the processing module 22 is configured to execute at least one of the other steps (e.g., S301A-S302A, S301B, but not limited thereto) performed by the second terminal 20 in any of the above methods, and will not be described in detail here.

[0412] 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.

[0413] 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.

[0414] Figure 8A is a schematic diagram of the structure of a communication device 8100 proposed in an embodiment of the present disclosure. Communication device 8100 can be a first terminal or a second terminal, or a chip, chip system, or processor that supports a network device implementing any of the above methods, or a chip, chip system, or processor that supports a terminal 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.

[0415] 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 the communication protocol 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. Optionally, the communication device 8100 is used to perform any of the above methods. Optionally, one or more processors 8101 are used to call instructions to enable the communication device 8100 to perform any of the above methods.

[0416] In some embodiments, the communication device 8100 further includes one or more transceivers 8102. When the communication device 8100 includes one or more transceivers 8102, the transceiver 8102 performs at least one of the communication steps such as sending and / or receiving in the above method (for example, S301A to S302A, S301B, but not limited thereto), and the processor 8101 performs at least one of the other steps (for example, S301A to S302A, S301B, but not limited thereto). In an optional embodiment, the transceiver may include a receiver and / or a transmitter, and the receiver and transmitter may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, interface, etc. may be interchangeable, the terms transmitter, transmitting unit, transmitter, transmitting circuit, etc. may be interchangeable, and the terms receiver, receiving unit, receiver, receiving circuit, etc. may be interchangeable.

[0417] In some embodiments, the communication device 8100 further includes one or more memories 8103 for storing data. Alternatively, all or part of the memories 8103 may be located outside the communication device 8100. In alternative embodiments, the communication device 8100 may include one or more interface circuits 8104. Optionally, the interface circuits 8104 are connected to the memory 8102 and may be configured to receive data from the memory 8102 or other devices, or to send data to the memory 8102 or other devices. For example, the interface circuits 8104 may read data stored in the memory 8102 and send the data to the processor 8101.

[0418] The communication device 8100 described in the above embodiment may be a network device or a terminal, 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.

[0419] FIG8B is a schematic diagram of the structure of a chip 8200 according to 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.

[0420] The chip 8200 includes one or more processors 8201. The chip 8200 is configured to execute any of the above methods.

[0421] In some embodiments, chip 8200 further includes one or more interface circuits 8202. Terms such as interface circuit, interface, and transceiver pins may be used interchangeably. In some embodiments, chip 8200 further includes one or more memories 8203 for storing data. Alternatively, all or part of memory 8203 may be located external to chip 8200. Optionally, interface circuit 8202 is connected to memory 8203 and may be used to receive data from memory 8203 or other devices, or may be used to send data to memory 8203 or other devices. For example, interface circuit 8202 may read data stored in memory 8203 and send the data to processor 8201.

[0422] In some embodiments, the interface circuit 8202 performs at least one of the communication steps (e.g., S301A-S302A, S301B, but not limited thereto) in the above-described method. The interface circuit 8202 performing the communication steps (e.g., S301A-S302A, S301B, but not limited thereto) in the above-described method, for example, means that the interface circuit 8202 performs data exchange between the processor 8201, chip 8200, memory 8203, or a transceiver device. In some embodiments, the processor 8201 performs at least one of the other steps (e.g., S301A-S302A, S301B, but not limited thereto).

[0423] 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.

[0424] 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.

[0425] 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.

[0426] 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.

[0427] 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.

[0428] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. An information indication method, characterized in that: The method is performed by a first terminal and includes: A discovery request message is sent to the second terminal or a discovery notification message is broadcast, wherein the discovery request message or the discovery notification message is used to indicate a direct discovery process for a first service, and the discovery request message or the discovery notification message includes a first parameter for indicating a service type of the first service.

2. The method according to claim 1, characterized in that The method further comprises: A discovery response message sent by the second terminal is received, wherein the discovery response message is used to respond to the discovery request message sent by the first terminal, and the discovery response message includes the first parameter.

3. The method according to claim 1 or 2, characterized in that The first parameter is a new parameter indicating a service type.

4. The method according to claim 3, characterized in that The first parameter is at least one of the following: The first parameter is a proximity service communication PC5 application identifier, and the first parameter corresponds to a PC5 application; The first parameter is a common prefix or a common sub-prefix of multiple PC5 application identifiers, and the first parameter corresponds to multiple PC5 applications; The first parameter is the value of the PC5 application type.

5. The method according to claim 1 or 2, characterized in that: The first parameter is implemented by a second parameter of a specific value, where the second parameter is a content type value of a neighbor service ProSe direct discovery PC5 message type parameter.

6. The method according to any one of claims 1 to 5, characterized in that The first service is ranging sidelink SL positioning.

7. The method according to claim 4, characterized in that The PC5 application is a ProSe application or a vehicle-to-everything (V2X) application.

8. The method according to any one of claims 1 to 7, characterized in that The direct discovery process includes at least one of the following: Direct discovery process of ProSe-enabled terminals; The process of discovering a terminal with V2X function.

9. The method according to any one of claims 1 to 8, characterized in that The discovery request message includes at least one of the following: A direct discovery request message of the first service; A group member discovery request message of the first service; A direct communication request message of the first service.

10. The method according to any one of claims 1 to 8, characterized in that The discovery notification message includes at least one of the following: A discovery notification message of the first service; A discovery notification message of a group member of the first service.

11. The method according to claim 2, characterized in that The discovery response message includes at least one of the following: A direct discovery response message of the first service; A group member discovery response message of the first service; A direct communication response message of the first service.

12. An information indication method, characterized in that: The method is performed by the second terminal, including: Receive a discovery request message sent by a first terminal or a discovery notification message sent by broadcasting, wherein the discovery request message or the discovery notification message is used to indicate a direct discovery process for a first service, and the discovery request message or the discovery notification message includes a first parameter for indicating a service type of the first service.

13. The method according to claim 12, characterized in that The method further comprises: A discovery response message is sent to the first terminal, wherein the discovery response message is used to respond to the discovery request message sent by the first terminal, and the discovery response message includes the first parameter.

14. The method according to claim 12 or 13, characterized in that The first parameter is a new parameter indicating a service type.

15. The method according to claim 14, characterized in that The first parameter is at least one of the following: The first parameter is a PC5 application identifier, and the first parameter corresponds to a PC5 application; or The first parameter is a common prefix or a common sub-prefix of multiple PC5 application identifiers, and the first parameter corresponds to multiple PC5 applications; or The first parameter is the value of the PC5 application type.

16. The method according to claim 12 or 13, characterized in that: The first parameter is implemented by a second parameter of a specific value, where the second parameter is a content type value of a ProSe direct discovery PC5 message type parameter.

17. The method according to any one of claims 12 to 16, characterized in that The first service is ranging SL positioning.

18. The method according to claim 15, characterized in that The PC5 application is a ProSe application or a V2X application.

19. The method according to any one of claims 12 to 18, characterized in that The direct discovery process includes at least one of the following: Direct discovery process of ProSe-enabled terminals; The process of discovering a terminal with V2X function.

20. The method according to any one of claims 12 to 19, characterized in that The discovery request message includes at least one of the following: A direct discovery request message of the first service; A group member discovery request message of the first service.

21. The method according to any one of claims 12 to 19, characterized in that The discovery notification message includes at least one of the following: A discovery notification message of the first service; A discovery notification message of a group member of the first service; A direct communication request message of the first service.

22. The method of claim 13, wherein: The discovery response message includes at least one of the following: A direct discovery response message of the first service; A group member discovery response message of the first service; A direct communication response message of the first service.

23. An information indication method, characterized in that: include: The first terminal sends a discovery request message or broadcasts a discovery notification message to the second terminal, wherein the discovery request message or the discovery notification message is used to indicate a direct discovery process for the first service, and the discovery request message or the discovery notification message includes a first parameter for indicating a service type of the first service; The second terminal receives the discovery request message sent by the first terminal or the discovery notification message sent by broadcasting.

24. A first terminal, characterized in that: include: A transceiver module is used to send a discovery request message or broadcast a discovery notification message to a second terminal, wherein the discovery request message or the discovery notification message is used to indicate a direct discovery process for a first service, and the discovery request message or the discovery notification message includes a first parameter for indicating a service type of the first service.

25. A second terminal, characterized in that: include: a transceiver module, configured to receive a discovery request message sent by a first terminal or a discovery notification message sent by broadcast, wherein the discovery request message or the discovery notification message is used to indicate a direct discovery process for a first service, and the discovery request message or the discovery notification message is used to indicate a direct discovery process for a first service. The request message or the discovery notification message includes a first parameter for indicating a service type of the first service.

26. A first terminal, characterized in that: include: one or more processors; A memory coupled to the processor, wherein instructions are stored in the memory, and when the instructions are executed by the processor, the first terminal executes the method according to any one of claims 1 to 11.

27. A second terminal, characterized in that: include: one or more processors; A memory coupled to the processor, wherein instructions are stored in the memory, and when the instructions are executed by the processor, the second terminal executes the method according to any one of claims 12 to 22.

28. A communication system, characterized in that: The invention comprises a first terminal and a second terminal, wherein the first terminal is configured to implement the method according to any one of claims 1 to 11, and the second terminal is configured to implement the method according to any one of claims 12 to 22.

29. A storage medium storing instructions, characterized in that: When the instructions are executed on a communication device, the communication device is caused to execute the method according to any one of claims 1 to 11 and 12 to 22.

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