WO2025065695A1 - Information indication method and terminal - Google Patents

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

The present disclosure relates to the field of communication technology, and in particular to an information indication method and a terminal.

Background Art

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

Summary of the invention

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 indicates to a second terminal to perform a direct discovery process based on a first service.

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

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.

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 normal execution of the first service.

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.

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.

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.

According to the fourth aspect of an embodiment of the present disclosure, a first terminal is provided, comprising: 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.

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.

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

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, the memory storing instructions, and when the instructions are executed by the processor, the second terminal is used to execute the method described in the second aspect.

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.

According to a ninth aspect of an embodiment of the present disclosure, a storage medium is provided, wherein the storage medium stores instructions, and when the instructions are executed on a communication device, the communication device executes the method described in the first aspect or the second aspect.

BRIEF DESCRIPTION OF THE DRAWINGS

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

FIG2A is a schematic diagram of a process of performing ranging SL positioning terminal discovery using a terminal with 5G ProSe function discovered by Model A provided in an embodiment of the present disclosure;

FIG. 2B is a diagram of an embodiment of the present disclosure providing a method for performing SL ranging using a terminal with a 5G ProSe function discovered by Model B. Schematic diagram of the process of bit terminal discovery;

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

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

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

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

FIG3B is a flow chart of another information indication method provided by an embodiment of the present disclosure;

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

FIG4B is a schematic diagram of a new parameter provided by an embodiment of the present disclosure as a parameter of an extended ProSe direct discovery PC5 message type;

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

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

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

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

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

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

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

FIG8B is a schematic diagram of the structure of a chip provided in an embodiment of the present disclosure.

DETAILED DESCRIPTION

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

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 a service type of the first service.

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 normal execution of the first service.

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.

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.

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

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.

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 a common sub-prefix of multiple PC5 application identifiers; or the first parameter is the value of the PC5 application type.

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

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 for the first service, reuse existing parameters, and indicate by taking specific values of the existing parameters. There is no need to use new signaling or messages, which can reduce signaling overhead.

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

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

In conjunction with some embodiments of the first aspect, in some embodiments, 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.

In combination with some embodiments of the first aspect, in some embodiments, 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.

In combination with some embodiments of the first aspect, in some embodiments, 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.

In combination with some embodiments of the first aspect, in some embodiments, 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.

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.

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.

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.

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

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 a common sub-prefix of multiple PC5 application identifiers; or the first parameter is the value of the PC5 application type.

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

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

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

In conjunction with some embodiments of the second aspect, in some embodiments, 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.

In conjunction with some embodiments of the second aspect, in some embodiments, 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.

In conjunction with some embodiments of the second aspect, in some embodiments, 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.

In conjunction with some embodiments of the second aspect, in some embodiments, 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.

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 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.

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 an optional implementation method of the first aspect.

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.

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.

In a seventh aspect, an embodiment of the present disclosure provides a second terminal, the second terminal comprising: one or more processors; a memory coupled to the processor, the memory storing instructions, when the instructions are executed by the processor, the second terminal is used to execute the second aspect, Optional implementation of the fourth aspect.

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.

In a ninth aspect, an embodiment of the present disclosure proposes a storage medium, wherein the storage medium 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.

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.

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.

In a twelfth aspect, an embodiment of the present disclosure provides a chip or a chip system. 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.

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 execute the method proposed in the embodiment of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding method, which will not be repeated here.

The embodiments of the present disclosure provide an information indication method and a terminal. In some embodiments, the information indication method and the information processing method, the communication method and the like terms can be interchangeable.

The embodiments of the present disclosure are not exhaustive, but are only 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 of the steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

In each embodiment of the present disclosure, unless otherwise specified or there is a logical conflict, the terms and/or descriptions between the embodiments are consistent and can be referenced to each other, and the technical features in different embodiments can be combined to form a new embodiment based on their internal logical relationships.

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.

In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular form, such as "a", "an", "the", "above", "said", "aforementioned", "this", 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 after the article may be understood as a singular expression or a plural expression.

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

In some embodiments, terms such as "at least one", "one or more", "a plurality of", "multiple" and the like can be used interchangeably.

In some embodiments, "at least one of A and B", "A and/or B", "A in one case, B in another case", "in response to one case A, in response to another case B", etc., may include the following technical solutions according to 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); in some embodiments, A and B (both A and B are executed). When there are more branches such as A, B, C, etc., the above is also similar.

In some embodiments, the recording method of "A or B" may include the following technical solutions according to 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). When there are more branches such as A, B, C, etc., the above is also similar.

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 restrictions on the position, order, priority, quantity or content of the description objects. The statement of the description object refers to the description in the context of the claims or embodiments, and should not constitute unnecessary restrictions 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", and the "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 the "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes may be the same or different. For example, if the description object is "device", then the "first device" and the "second device" may be the same device or different devices, and their types may be the same or different. For another example, if the description object is "information", then the "first information" and the "second information" may be the same information or different information, and their contents may be the same or different.

In some embodiments, "including A", "comprising A", "used to indicate A", "carrying A" can be interpreted as directly carrying A. Can be interpreted as an indirect indication of A.

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.

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 lower 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", "no more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

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.

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

In some embodiments, the terms "access network device (AN device), "radio access network device (RAN device)", "base station (BS)", "radio base station (radio base station)", "fixed station (fixed station)", "node", "access point (access point)", "transmission point (TP)", "reception point (RP)", "transmission and/or reception point (transmission/reception point, TRP)", "panel", "antenna panel (antenna panel)", "antenna array (antenna array)", "cell", "macro cell (macro cell)", "small cell (small cell)", "femto cell (femto cell)", "pico cell (pico cell)", "sector (sector)", "cell group (cell)", "serving cell", "carrier (carrier)", "component carrier (component carrier)", "bandwidth part (bandwidth part, BWP)" and the like can be used interchangeably.

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 and the like can be used interchangeably.

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 access network device, the core network device, or the network device and the communication between the terminals is replaced by the communication between multiple terminals (for example, device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, it can also be set as a 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.

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 also be configured to have a structure that has all or part of the functions of the terminal.

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

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

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

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.

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

As shown in FIG. 1 , a communication system 100 includes a terminal 101 and a network device 102 .

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 (Pad), 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 to these.

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

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 Node B (eNB), a next generation evolved Node B (ng-eNB), a next generation Node B (gNB), a node B (NB), a home node B (HNB), a home evolved node B (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a baseband 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.

In some embodiments, the core network device may be a device including a first network function, a second network function, etc., or may be a plurality of devices or a group of devices 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).

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

In some embodiments, the first network function is used for access control and mobility management of the terminal accessing the operator network, including, for example, mobility status management, allocation of temporary user identity, authentication and authorization of users, etc., and its name is not limited thereto.

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. A person of ordinary skill in the art 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.

The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1 , or part of the subject, but are not limited thereto. The subjects shown in FIG1 are examples, and the communication system may include all or part of the subjects in FIG1 , or may include other subjects other than FIG1 , and the number and form of the subjects are arbitrary, and the subjects may be physical or virtual, and the connection relationship between the subjects is an example, and the subjects may be connected or disconnected, and the connection may be in any manner, and may be a direct connection or an indirect connection, and may be a wired connection or a wireless connection.

The embodiments of the present disclosure can be applied to long term evolution (LTE), LTE-advanced (LTE-A), LTE-beyond (LTE-B), SUPER 3G, IMT-Advanced, the fourth generation mobile communication system (4G), the fifth 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), etc. ), 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 wide 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), system using other communication methods, next generation systems expanded based on them, and the like. In addition, a number of systems may also be applied in combination (for example, combination of LTE or LTE-A with 5G, and the like).

Distance measurement: 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.

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.

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.

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

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.

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 5th generation core (5GC) to transmit service requests and results.

SL Positioning Server Terminal: A terminal that provides method determination, auxiliary data distribution and/or position calculation functions for services based on sidelink positioning and ranging. It interacts with other terminals through PC5 as needed to determine ranging/SL positioning methods, distribute auxiliary data and Calculate the location of the target terminal. If any function is supported, the target terminal or SL reference terminal can act as an SL positioning server terminal.

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

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.

The sidelink positioning provides the absolute position, relative position or ranging information of the terminal by positioning using PC5. The positioning terminal can be used to determine the absolute position of the target terminal using sidelink positioning.

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

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

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

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

The ranging/sidelink positioning service request can be initiated by a terminal (i.e., SL positioning client terminal, target terminal, SL reference terminal), 5GC NF, location services (LCS) client or application function (AF). Therefore, ranging/sidelink positioning terminal discovery and selection are required through PC5 to support ranging/sidelink positioning services.

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

In some embodiments, the vehicle to X (V2X) communication process on the PC5 reference point supports terminal discovery of V2X. When using the unicast mode V2X communication process, the service type in the layer 2 link establishment process indicates "ranging/sidelink positioning"; when using the broadcast mode or multicast mode V2X communication process, the service type indicates "ranging/sidelink positioning".

Terminal discovery that supports 5G proximity-based services (ProSe) (including commercial and public safety use cases) supports both Model A and 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 Model 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 Model 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.

In some embodiments, as shown in Figure 2A, the process of performing ranging SL positioning terminal discovery on a terminal with 5G ProSe function discovered using Model A is used.

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 type of discovery message, security protection elements, ranging and sidelink positioning protocol (RSPP) metadata information and the user information ID of the first terminal.

In some embodiments, as shown in Figure 2B, a process for discovering a terminal that supports 5G ProSe for ranging/SL positioning is used in Model B discovery.

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 type of discovery message, security protection elements, user information ID of the discoverer terminal, target information, user information ID of the first terminal, and optional RSPP metadata information.

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 security protection element, RSPP metadata information, and a user information ID of the second terminal.

In some embodiments, as shown in Figure 2C, a process that supports 5G ProSe for ranging/SL positioning group member discovery is used in Model A discovery.

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 type of discovery message, the user information ID of the first terminal, the group ID and RSPP metadata information.

In some embodiments, as shown in Figure 2D, a process that supports 5G ProSe for ranging/SL positioning group member discovery is used in Model B discovery.

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 type of discovery message, group ID, (optional) user information ID of the first terminal and optional RSPP metadata information.

Step 2: The second terminal (also referred to as the discovered terminal) that matches the parameter value (including the group ID and user information ID of the first terminal) contained 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 type of discovery message, the second user information ID, RSPP metadata information and the group ID.

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), wherein the ProSe direct discovery PC5 message type includes three parts: "discovery type value", "content type value" and "mode type value", and the message type of each discovery message is identified by different values of the three parameters of the ProSe direct discovery PC5 message type.

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".

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".

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".

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".

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".

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".

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".

In some embodiments, the ProSe direct discovery PC5 message type parameters are shown in FIG. 2E and Table 1 below,

As shown in FIG. 2E , ProSe directly discovers that the PC5 message type is a type 1 information element with a length of 1 octet.

Table 1

Table 1 above shows the parameters of the ProSe direct discovery PC5 message type.

Note 1: Content type “0000” (notification/response) is used for Model A first terminal (announcing) and Model B second terminal (discovered terminal) operations.

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) operations.

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.

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.

Based on this, the embodiments of the present disclosure provide an information indication method and a terminal, wherein the method executed by the first terminal includes: sending a discovery request message or broadcasting 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. 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 the discovery notification message includes a first parameter for indicating the service type of the first service, so as to ensure the normal execution of the first service.

FIG3A is an interactive schematic 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, and the method includes:

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

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

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

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

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

In the embodiment of the present disclosure, the first terminal sends a discovery request message to the second terminal, the discovery request message is used to indicate a direct discovery process of the first service, and the discovery request message includes a first parameter for indicating 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.

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

In some embodiments, the new parameter is a service type (Service type), but is not limited to this, and the new parameter may also have other names.

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.

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.

In the disclosed embodiment, the first parameter is a new parameter indicating a service type, the first parameter corresponds to a plurality of PC5 applications, and the first parameter is a common prefix or a common sub-prefix of the plurality of PC5 application identifiers.

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.

Exemplarily, the new parameter is a service type, and the service type corresponds to one or more PC5 applications. If the service type corresponds to one 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 part, such as a common prefix or a common sub-prefix of the ProSe application identifier assigned to the ProSe applications under the same service type. Alternatively, the service type can be a value of the PC5 application type, and the service type can be separated from the encoding of the application identifier, wherein the service type can be defined independently of the application layer.

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

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.

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.

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

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.

In some embodiments, the first parameter is implemented by a second parameter that is a specific value, and the second parameter is a content type value of a ProSe direct discovery PC5 message type parameter.

In the disclosed embodiment, the second parameter is the content type value of the ProSe direct discovery PC5 message type parameter.

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.

As shown in FIG. 2E , ProSe directly discovers that the PC5 message type is a type 1 information element with a length of 1 octet.

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.

Table 2

It should be noted that each element, each row, or each column in the table of the embodiments 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.

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

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 first terminal (discoverer terminal) of Model B, but is not limited to this. The content type "1010" can also be used to indicate other operations.

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 (discovered terminal) of Model B, but is not limited to this. The content type "1110" can also be used to indicate other operations.

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 first terminal (discoverer terminal) of Model B, but is not limited to this. The content type "1111" can also be used to indicate other operations.

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", and the embodiments of the present disclosure do not impose specific restrictions on this.

In some embodiments, the PC5 application is a ProSe application or a vehicle network V2X application, but is not limited thereto and may also be other applications.

In some embodiments, 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.

In the disclosed embodiment, for a terminal supporting V2X, the V2X service type corresponding to the V2X application identifier may be used to identify the message to be sent for ranging SL positioning. However, if the PC5 service type is shared with a terminal supporting V2X and a terminal supporting ProSe 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.

In some embodiments, 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.

In some embodiments, as shown in Figure 2B, in the process of discovering a terminal supporting 5G ProSe using Model B to perform 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.

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

In some embodiments, as shown in Figure 2D, in the process of using Model B to discover a terminal supporting 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 Ranging/SL Positioning Group member discovery Solicitation message.

In some embodiments, as shown in FIG. 2D , 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.

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.

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.

S202A, the second terminal sends a discovery response message to the first terminal.

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

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

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

Among them, the relevant description of the first parameter can refer to the relevant description in the above S201A, which will not be repeated here.

In some embodiments, 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.

In some embodiments, as shown in Figure 2B, in the process of using Model B to discover a terminal that supports 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.

In some embodiments, as shown in FIG. 2B , the direct discovery response message of the first service also includes a discovery message type, a security protection At least one of the protection element, RSPP metadata information, and the user information ID of the second terminal.

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 response message sent by the second terminal is the group member discovery response message of the first service (Ranging/SL Positioning Group member discovery Response message).

In some embodiments, as shown in FIG. 2D , 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.

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.

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.

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

In some embodiments, terms such as "uplink", "uplink", "physical uplink" can be interchangeable, and terms such as "downlink", "downlink", "physical downlink" can be interchangeable, and terms such as "side", "sidelink", "side communication", "sidelink communication", "direct connection", "direct link", "direct communication", "direct link communication" can be interchangeable.

In some embodiments, terms such as "moment", "time point", "time", and "time position" can be interchangeable, and terms such as "duration", "period", "time window", "window", and "time" can be interchangeable.

In some embodiments, "obtain", "obtain", "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 high levels, obtaining by self-processing, autonomous implementation, etc.

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

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

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 is not limited thereto.

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

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

FIG3B is an interactive schematic diagram of an information indication method according to an embodiment of the present disclosure. As shown in FIG3B , the embodiment of the present disclosure relates to an information indication method, and the method includes:

S301B, the first terminal broadcasts a discovery notification message to the second terminal.

In some embodiments, the second terminal receives a discovery notification message sent by the first terminal.

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

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

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

In the embodiment of the present disclosure, the first terminal sends a discovery notification message to the second terminal, the discovery notification message is used to indicate a direct discovery process of the first service, and the discovery notification message includes a first parameter for indicating 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.

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

In some embodiments, the new parameter is a service type (Service type), but is not limited to this, and the new parameter may also have other names.

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 a common sub-prefix of multiple PC5 application identifiers; or A parameter is the value of the PC5 application type.

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.

In the disclosed embodiment, the first parameter is a new parameter indicating a service type, the first parameter corresponds to a plurality of PC5 applications, and the first parameter is a common prefix or a common sub-prefix of the plurality of PC5 application identifiers.

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.

Exemplarily, the new parameter is a service type, and the service type corresponds to one or more PC5 applications. If the service type corresponds to one 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 part, such as a common prefix or a common sub-prefix of the ProSe application identifier assigned to the ProSe applications under the same service type. Alternatively, the service type can be a value of the PC5 application type, and the service type can be separated from the encoding of the application identifier, wherein the service type can be defined independently of the application layer.

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

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.

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.

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

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.

In some embodiments, the first parameter is implemented by a second parameter that is a specific value, and the second parameter is a content type value of a ProSe direct discovery PC5 message type parameter.

In the disclosed embodiment, the second parameter is the content type value of the ProSe direct discovery PC5 message type parameter.

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.

As shown in FIG. 2E , ProSe directly discovers that the PC5 message type is a type 1 information element with a length of 1 octet.

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

In some embodiments, the PC5 application is a ProSe application or a vehicle network V2X application, but is not limited thereto and may also be other applications.

In some embodiments, 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.

In the disclosed embodiment, for a terminal supporting V2X, the V2X service type corresponding to the V2X application identifier may be used to identify the message to be sent for ranging SL positioning. However, if the PC5 service type is shared with a terminal supporting V2X and a terminal supporting ProSe 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.

In some embodiments, 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.

In some embodiments, as shown in Figure 2A, in the process of discovering a terminal supporting 5G ProSe using Model A to perform 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.

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 a discovery message type, a security protection element, RSPP metadata information, and a user information ID of the first terminal.

In some embodiments, as shown in Figure 2C, in the process of using Model A to discover a terminal supporting 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.

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.

In the above various embodiments, 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 an extended content type value. ProSe directly discovers the PC5 message type.

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

S501A, sending a discovery request message.

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.

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.

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.

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

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.

In some embodiments, the first parameter is implemented by a second parameter that is a specific value, and the second parameter is a content type value of a neighbor service ProSe direct discovery PC5 message type parameter.

In some embodiments, the first service is ranging sidelink SL positioning.

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

In some embodiments, 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.

In some embodiments, 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.

S502A, obtain a discovery response message.

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.

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.

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

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

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

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.

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.

Among them, the relevant description of the first parameter can refer to the relevant description in the above embodiment, and will not be repeated here.

In some embodiments, 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.

The communication method involved in the embodiment 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 is not limited thereto.

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

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

S501B, sending a discovery notification message.

Among them, the optional implementation of S501B can refer to the optional implementation of S301B in Figure 3B, and the implementation involved in Figure 3B. Other related parts in the example will not be repeated here.

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.

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.

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

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.

In some embodiments, the first parameter is implemented by a second parameter that is a specific value, and the second parameter is a content type value of a neighbor service ProSe direct discovery PC5 message type parameter.

In some embodiments, the first service is ranging sidelink SL positioning.

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

In some embodiments, 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.

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

S601A, obtain a discovery request message.

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.

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.

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

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

In some embodiments, the second terminal performs processing to obtain a discovery request message.

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 acquiescent.

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.

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

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.

In some embodiments, the first parameter is implemented by a second parameter that is a specific value, and the second parameter is a content type value of a neighbor service ProSe direct discovery PC5 message type parameter.

In some embodiments, the first service is ranging sidelink SL positioning.

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

In some embodiments, 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.

In some embodiments, 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.

S602A, send a discovery response message.

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.

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

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 for indicating a service type of the first service.

Among them, the relevant description of the first parameter can refer to the relevant description in the above embodiment, and will not be repeated here.

In some embodiments, 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.

The communication method involved in the embodiment 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 is not limited thereto.

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

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

S601B, obtain a discovery notification message.

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.

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.

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

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

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

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 acquiescent.

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.

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

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.

In some embodiments, the first parameter is implemented by a second parameter that is a specific value, and the second parameter is a content type value of a neighbor service ProSe direct discovery PC5 message type parameter.

In some embodiments, the first service is ranging sidelink SL positioning.

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

In some embodiments, 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.

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

In an exemplary embodiment, a solution is proposed to identify messages for direct discovery by PC 5 for ranging SL positioning.

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

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.

In other embodiments, each message that the PC 5 directly sees is identified using a parameter with a specific value for ranging SL positioning, and the message is processed accordingly in a corresponding process.

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

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

The service type corresponds to one or more PC5 applications. If the service type corresponds to one 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 part, such as a common prefix or sub-prefix of the ProSe application identifier assigned to the ProSe applications under the same service type. Alternatively, the service type may be a value of the PC5 application type, and the service type may be separated from the encoding of the application identifier, wherein the service type may be defined independently of the application layer.

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

In some embodiments, the service type may be defined as a PC5 service type, as shown in FIG. 4A or 4B , or may be defined as a ProSe service type or a V2X service type.

In some embodiments, the service type may be shared with terminals supporting V2X and terminals supporting ProSe.

In some embodiments, as shown in Figure 2A, the process of terminal discovery using a terminal supporting 5G ProSe for ranging SL positioning is used in Model A discovery.

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, the security protection element, the RSPP metadata information, and the user information ID of the first terminal. Among them, 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, wherein 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".

In some embodiments, as shown in Figure 2B, the process of discovering a terminal that supports 5G ProSe for ranging SL positioning is used in Model B discovery.

Step 1, the first terminal (also called 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. Among them, 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, 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".

Step 2, the second terminal (also referred to as the discoverer terminal) matching 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. Among them, 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 "response", and the mode type value is "Model B".

In some embodiments, as shown in Figure 2C, the process of group member discovery that supports 5G ProSe for ranging SL positioning is used in Model A discovery.

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. Among them, 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, 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 announcement", and the mode type value is "Model A".

In some embodiments, as shown in Figure 2D, the process of group member discovery that supports 5G ProSe for ranging SL positioning is used in Model B discovery.

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. Among them, 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, 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".

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. Among them, 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, 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".

In some embodiments, terminal discovery with V2X-enabled terminal ranging and SL positioning.

For V2X-enabled 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 with V2X-enabled terminals and ProSe-enabled 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.

In the embodiment of the present disclosure, while supporting ranging SL positioning through PC5, messages defined for ranging SL positioning can be directly discovered by PC5 for specific processing.

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.

In some embodiments, as shown in FIG. 2E , the ProSe Direct Discovery PC5 message type is a Type 1 information element with a length of 1 octet.

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

The embodiments of the present disclosure also propose a device for implementing any of the above methods. For example, a device is proposed, and the above device 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.

It should be understood that the division of the units or modules in the above device is only a division of logical functions, which can be fully or partially integrated into one physical entity or physically separated in actual implementation. In addition, the units or modules in the device can 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 instructions are stored in the memory. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the 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 inside the device or a memory outside the device. Alternatively, the units or modules in the device may be implemented in the form of hardware circuits, and the functions of some or all of the units or modules may be implemented by designing the hardware circuits. The hardware circuits may be understood as one or more processors; for example, in one implementation, the hardware circuits are application-specific integrated circuits (ASICs), and the functions of some or all of the above units or modules may be implemented by designing the logical relationship of the components in the circuits; for another example, in another implementation, the hardware circuits may be implemented by programmable logic devices (PLDs), and Field Programmable Gate Arrays (FPGAs) may be used as an example, which may include a large number of logic gate circuits, and the connection relationship between the logic gate circuits may be configured by configuring the configuration files, thereby implementing the functions of some or all of the above units or modules. All units or modules of the above devices may be implemented in the form of software called by the processor, or in the form of hardware circuits, or in the form of software called by the processor, and the remaining part may be implemented in the form of hardware circuits.

In the disclosed embodiments, the processor is a circuit with signal processing capability. In one implementation, the processor may be a circuit with instruction reading and running capability, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which may be understood as a microprocessor), or a digital signal processor (DSP); in another implementation, the processor may implement certain functions through the logical relationship of a hardware circuit, and the logical relationship of the above hardware circuit may be fixed or reconfigurable, such as 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 to implement the hardware circuit configuration may 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 ASIC, such as Neural Network Processing Unit (NPU), Tensor Processing Unit (TPU), Deep Learning Processing Unit (DPU), etc.

Fig. 7A is a schematic diagram of the structure of a first terminal proposed in an embodiment of the present disclosure. As shown in Fig. 7A, the first terminal 10 may include: at least one of a transceiver module 11, a processing module 12, and the like.

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 a service type of the first service.

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

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

In some embodiments, the processing module can be a module or 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 replaced with the processor.

Fig. 7B is a schematic diagram of the structure of the second terminal proposed in the embodiment of the present disclosure. As shown in Fig. 7B, the second terminal 20 may include: at least one of a transceiver module 21, a processing module 22, and the like.

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 broadcasting, 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 transceiver module 21 is used to execute at least one of the communication steps such as sending and/or receiving (such as S301A to S302A, S301B, but not limited thereto) executed by the second terminal 20 in any of the above methods, which will not be described in detail here. Optionally, the processing module 22 is used to execute at least one of the other steps (such as S301A to S302A, S301B, but not limited thereto) executed by the second terminal 20 in any of the above methods, which will not be described in detail here.

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

In some embodiments, the processing module can be a module or 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 replaced with the processor.

8A is a schematic diagram of the structure of a communication device 8100 proposed in an embodiment of the present disclosure. The communication device 8100 may be a first terminal, or a second terminal, or a chip, a chip system, or a processor that supports a network device to implement any of the above methods, or a chip, a chip system, or a processor that supports a terminal to implement any of the above methods. The communication device 8100 may be used to implement the method described in the above method embodiment, and the details may refer to the description in the above method embodiment.

As shown in FIG8A , the communication device 8100 includes one or more processors 8101. The processor 8101 may be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor may be used to process the communication protocol and the communication data, and the central processing unit may 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 the program, and process the data of the program. Optionally, the communication device 8100 is used to execute any of the above methods. Optionally, one or more processors 8101 are used to call instructions so that the communication device 8100 executes any of the above methods.

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 the transmitter may be separated or integrated together. Optionally, the terms such as transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, interface, etc. may be replaced with each other, the terms such as transmitter, transmitting unit, transmitter, transmitting circuit, etc. may be replaced with each other, and the terms such as receiver, receiving unit, receiver, receiving circuit, etc. may be replaced with each other.

In some embodiments, the communication device 8100 further includes one or more memories 8103 for storing data. Optionally, all or part of the memories 8103 may also be outside the communication device 8100. In an optional embodiment, the communication device 8100 may include one or more interface circuits 8104. Optionally, the interface circuit 8104 is connected to the memory 8102, and the interface circuit 8104 may be used to receive data from the memory 8102 or other devices, and may be used to send data to the memory 8102 or other devices. For example, the interface circuit 8104 may read the data stored in the memory 8102 and send the data to the processor 8101.

The communication device 8100 described in the above embodiments 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 and 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, a vehicle-mounted device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

8B is a schematic diagram of the structure of a chip 8200 provided in an embodiment of the present disclosure. In the case where the communication device 8100 may be a chip or a chip system, reference may be made to the schematic diagram of the structure of the chip 8200 shown in FIG8B , but the present disclosure is not limited thereto.

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

In some embodiments, the chip 8200 further includes one or more interface circuits 8202. Optionally, the terms interface circuit, interface, transceiver pin, etc. can be interchangeable. In some embodiments, the chip 8200 further includes one or more memories 8203 for storing data. Optionally, all or part of the memory 8203 can be outside the chip 8200. Optionally, the interface circuit 8202 is connected to the memory 8203, and the interface circuit 8202 can be used to receive data from the memory 8203 or other devices, and the interface circuit 8202 can be used to send data to the memory 8203 or other devices. For example, the interface circuit 8202 can read the data stored in the memory 8203 and send the data to the processor 8201.

In some embodiments, the interface circuit 8202 performs at least one of the communication steps such as sending and/or receiving in the above method (for example, S301A to S302A, S301B, but not limited thereto). The interface circuit 8202 performs the communication steps such as sending and/or receiving in the above method, for example, means that the interface circuit 8202 performs data interaction between the processor 8201, the chip 8200, the memory 8203, or the transceiver device. In some embodiments, the processor 8201 performs at least one of the other steps (for example, S301A to S302A, S301B, but not limited thereto).

The present disclosure also provides a storage medium, on which instructions are stored. When the instructions are executed on the communication device 8100, the communication device 8100 executes any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is an electronic storage medium. The medium is a computer-readable storage medium, but is not limited thereto, and may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited thereto, and may also be a transient storage medium.

The present disclosure also proposes a program product, which, when executed by the communication device 8100, enables the communication device 8100 to execute any of the above methods. Optionally, the program product is a computer program product.

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

Those of ordinary skill 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. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this disclosure.

Those skilled in the art can 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.

The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims (29)

An information indication method, characterized in that the method is executed by a first terminal, comprising: 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. 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. The method according to claim 1 or 2 is characterized in that the first parameter is a new parameter indicating a service type. The method according to claim 3, wherein 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. The method according to claim 1 or 2 is characterized in that the first parameter is implemented by a second parameter of a specific value, and the second parameter is the content type value of the neighbor service ProSe direct discovery PC5 message type parameter. The method according to any one of claims 1 to 5 is characterized in that the first service is ranging side link SL positioning. The method as claimed in claim 4 is characterized in that the PC5 application is a ProSe application or a vehicle-to-everything (V2X) application. The method according to any one of claims 1 to 7, wherein the direct discovery process comprises at least one of the following: Direct discovery process of ProSe-enabled terminals; The process of discovering a terminal with V2X function. The method according to any one of claims 1 to 8, wherein 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. The method according to any one of claims 1 to 8, wherein 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. The method according to claim 2, 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. An information indication method, characterized in that the method is executed by a second terminal, comprising: 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. 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. The method according to claim 12 or 13 is characterized in that the first parameter is a new parameter indicating a service type. The method according to claim 14, wherein 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. The method as claimed in claim 12 or 13 is characterized in that the first parameter is implemented by a second parameter of a specific value, and the second parameter is a content type value of a ProSe direct discovery PC5 message type parameter. The method according to any one of claims 12 to 16 is characterized in that the first service is ranging (SL) positioning. The method as claimed in claim 15, characterized in that the PC5 application is a ProSe application or a V2X application. The method according to any one of claims 12 to 18, wherein the direct discovery process comprises at least one of the following: Direct discovery process of ProSe-enabled terminals; The process of discovering a terminal with V2X function. The method according to any one of claims 12 to 19, wherein 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. The method according to any one of claims 12 to 19, wherein 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. The method according to 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. An information indication method, characterized by comprising: 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. A first terminal, characterized by comprising: 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. A second terminal, characterized by comprising: 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. A first terminal, characterized by comprising: 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. A second terminal, characterized by comprising: 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. A communication system, characterized in that it 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. A storage medium storing instructions, characterized in that when the instructions are executed on a communication device, the communication device executes the method as described in any one of claims 1 to 11 and 12 to 22.