CN117529938A

CN117529938A - Information indication method and terminal

Info

Publication number: CN117529938A
Application number: CN202380011445.7A
Authority: CN
Inventors: 毛玉欣
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2023-09-28
Filing date: 2023-09-28
Publication date: 2024-02-06

Abstract

The disclosure relates to an information indication method and a terminal, wherein the method executed by a first terminal comprises the following steps: and transmitting a discovery request message or a broadcast transmission discovery notification message to the second terminal, wherein the discovery request message or the discovery notification message is used for indicating that the direct discovery process of the first service is performed, and the discovery request message or the discovery notification message comprises a first parameter for indicating the service type of the first service. Thus, the first terminal may instruct the second terminal to perform a direct discovery process based on the first service by transmitting a discovery request message or a broadcast transmission discovery notification message to the second terminal, the discovery request message or the discovery notification message including a first parameter for indicating a service type of the first service, so as to ensure that the first service is normally executed.

Description

Information indication method and terminal

Technical Field

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

Background

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

Disclosure of Invention

The information indication method and the terminal provided by the embodiment of the disclosure are used for solving the problem of how the first terminal indicates the second terminal to perform the direct discovery process based on the first service.

The embodiment of the disclosure provides an information indication method and a terminal.

According to a first aspect of an embodiment of the present disclosure, there is provided an information indicating method, performed by a first terminal, including: and transmitting a discovery request message or a broadcast transmission discovery notification message to the second terminal, wherein the discovery request message or the discovery notification message is used for indicating that the direct discovery process of the first service is performed, and the discovery request message or the discovery notification message comprises a first parameter for indicating the service type of the first service.

In the above embodiment, the first terminal may instruct the second terminal to perform the direct discovery process based on the first service by transmitting a discovery request message or broadcasting a discovery notification message to the second terminal, where the discovery request message or the discovery notification message includes a first parameter for indicating a service type of the first service, so as to ensure that the first service is normally executed.

According to a second aspect of the embodiments of the present disclosure, there is provided an information indicating method, performed by a second terminal, including: and receiving a discovery request message or a discovery notification message sent by the first terminal in a broadcast manner, wherein the discovery request message or the discovery notification message is used for indicating a direct discovery process of the first service, and the discovery request message or the discovery notification message comprises a first parameter for indicating the service type of the first service.

In the above embodiment, the second terminal may receive the discovery request message sent by the first terminal or the discovery notification message sent by the broadcast manner, so as to determine to execute the direct discovery process of the first service, so that normal execution of the first service can be ensured.

According to a third aspect of the embodiments of the present disclosure, there is provided an information indicating method, including: the first terminal sends a discovery request message or a broadcast sending discovery notification message to the second terminal, wherein the discovery request message or the discovery notification message is used for indicating a direct discovery process of the first service, and the discovery request message or the discovery notification message comprises a first parameter for indicating the service type of the first service; the second terminal receives a discovery request message sent by the first terminal or a discovery notification message sent by a broadcasting mode.

According to a fourth aspect of embodiments of the present disclosure, there is provided a first terminal, including: and a transceiver module for transmitting a discovery request message or a broadcast transmission discovery notification message to the second terminal, wherein the discovery request message or the discovery notification message is used for indicating a direct discovery process of 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.

According to a fifth aspect of embodiments of the present disclosure, there is provided a second terminal, including: and the receiving and transmitting module is used for receiving a discovery request message or a discovery notification message sent by a first terminal in a broadcast mode, wherein the discovery request message or the discovery notification message is used for indicating a direct discovery process of the first service, and the discovery request message or the discovery notification message comprises a first parameter for indicating the service type of the first service.

According to a sixth aspect of embodiments of the present disclosure, there is provided a first terminal, including: one or more processors; a memory coupled to the processor, the memory having instructions stored thereon that, when executed by the processor, cause the first terminal to perform the method of the first aspect.

According to a seventh aspect of embodiments of the present disclosure, there is provided a second terminal, including: one or more processors; a memory coupled to the processor, the memory having instructions stored thereon that, when executed by the processor, cause the second terminal to perform the method of the second aspect.

According to an eighth aspect of embodiments of the present disclosure, there is provided a communication system, including a first terminal configured to implement the method described in the first aspect, and a second terminal configured to implement the method described in the second aspect.

According to a ninth aspect of embodiments of the present disclosure, there is provided a storage medium storing instructions that, when executed on a communication device, cause the communication device to perform the method of the first and second aspects.

Drawings

Fig. 1 is an architecture diagram of a communication system provided by an embodiment of the present disclosure;

fig. 2A is a schematic diagram of a procedure for ranging SL positioning terminal discovery using a terminal with a 5G ProSe function discovered by Model a according to an embodiment of the present disclosure;

fig. 2B is a schematic diagram of a procedure for ranging SL positioning terminal discovery using a Model B discovered terminal with a 5G ProSe function according to an embodiment of the present disclosure;

fig. 2C is a schematic diagram of a procedure for ranging SL positioning group member discovery using a Model a discovered terminal with a 5G ProSe function provided in an embodiment of the present disclosure;

fig. 2D is a schematic diagram of a procedure for ranging SL positioning group member discovery using a Model B discovered terminal with a 5G ProSe function according to an embodiment of the present disclosure;

fig. 2E is a schematic diagram of a ProSe direct discovery PC5 message type provided by an embodiment of the present disclosure;

FIG. 3A is a flow chart of a method of information indication provided by an embodiment of the present disclosure;

FIG. 3B is a flow chart of another information indication method provided by an embodiment of the present disclosure;

fig. 4A is a schematic diagram of a new parameter provided by an embodiment of the present disclosure being an independent PC5 service type parameter;

fig. 4B is a schematic diagram of a new parameter for extended ProSe direct discovery PC5 message type parameter provided by an embodiment of the present disclosure;

FIG. 5A is a flow chart of yet another information indication method provided by an embodiment of the present disclosure;

FIG. 5B is a flow chart of yet another information indication method provided by an embodiment of the present disclosure;

FIG. 6A is a flow chart of yet another information indication method provided by an embodiment of the present disclosure;

FIG. 6B is a flow chart of yet another information indication method provided by an embodiment of the present disclosure;

fig. 7A is a block diagram of a first terminal according to an embodiment of the present disclosure;

fig. 7B is a block diagram of a second terminal provided in an embodiment of the present disclosure;

fig. 8A is a block diagram of a communication device provided by an embodiment of the present disclosure;

fig. 8B is a schematic structural diagram of a chip according to an embodiment of the disclosure.

Detailed Description

In a first aspect, an embodiment of the present disclosure proposes an information indication method, which is executed by a first terminal, including: and transmitting a discovery request message or a broadcast transmission discovery notification message to the second terminal, wherein the discovery request message or the discovery notification message is used for indicating that the direct discovery process of the first service is performed, and the discovery request message or the discovery notification message comprises a first parameter for indicating the service type of the first service.

With reference to some embodiments of the first aspect, in some embodiments, the method further includes: the first terminal receives a discovery response message sent by the second terminal, wherein the discovery response message is used for responding to the discovery request message sent by the first terminal, and the discovery response message comprises a first parameter used for indicating the service type of the first service.

In the above embodiment, the first terminal may receive the 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, so as to ensure that the first service is normally performed.

With reference to some embodiments of the first aspect, in some embodiments, the first parameter is a new parameter indicating a traffic type.

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

With reference to some embodiments of the first aspect, in some embodiments, the first parameter corresponds to one PC5 application, and the first parameter is a PC5 application identifier; or the first parameter corresponds to the plurality of PC5 applications, and the first parameter is a common prefix or a common sub-prefix of the plurality of PC5 application identifiers; or the first parameter is the value of the PC5 application type.

With reference to some embodiments of the first aspect, in some embodiments, the first parameter is implemented by a second parameter that is a specific value, the second parameter being a content type value of a ProSe direct discovery PC5 message type parameter.

In the above embodiment, the first terminal may 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 the direct discovery process of the first service, multiplex the existing parameter, and instruct by taking the specific value from the existing parameter, without adopting new signaling or message, so as to reduce signaling overhead.

With reference to some embodiments of the first aspect, in some embodiments, the first service is ranging SL positioning.

With reference to some embodiments of the first aspect, in some embodiments, the PC5 application is a ProSe application or a V2X application.

With reference to some embodiments of the first aspect, in some embodiments, the direct discovery process includes at least one of:

A terminal direct discovery process with ProSe function;

terminal discovery procedure with V2X functionality.

With reference to some embodiments of the first aspect, in some embodiments, the discovery request message includes at least one of:

a direct discovery request message of a first service;

a group member discovery request message for a first service;

a direct communication request message for the first service.

With reference to some embodiments of the first aspect, in some embodiments, the discovery notification message includes at least one of:

a discovery notification message for the first service;

discovery notification messages for group members of a first service.

With reference to some embodiments of the first aspect, in some embodiments, the discovery response message includes at least one of:

a direct discovery response message for the first service;

a group member discovery response message for the first service;

a direct communication response message for the first service.

In a second aspect, an embodiment of the present disclosure proposes an information indicating method, performed by a second terminal, including: and receiving a discovery request message or a discovery notification message sent by the first terminal in a broadcast manner, wherein the discovery request message or the discovery notification message is used for indicating a direct discovery process of the first service, and the discovery request message or the discovery notification message comprises a first parameter for indicating the service type of the first service.

With reference to some embodiments of the second aspect, in some embodiments, the method further includes: the second terminal sends a discovery response message to the first terminal, wherein the discovery response message is used for responding to the discovery request message sent by the first terminal, and the discovery response message comprises a first parameter for indicating the service type of the first service.

With reference to some embodiments of the second aspect, in some embodiments, the first parameter is a new parameter indicating a traffic type.

With reference to some embodiments of the second aspect, in some embodiments, the first parameter corresponds to one PC5 application, and the first parameter is a PC5 application identifier; or the first parameter corresponds to the plurality of PC5 applications, and the first parameter is a common prefix or a common sub-prefix of the plurality of PC5 application identifiers; or the first parameter is the value of the PC5 application type.

With reference to some embodiments of the second aspect, in some embodiments, the first parameter is implemented by a second parameter that is a specific value, the second parameter being a content type value of a ProSe direct discovery PC5 message type parameter.

With reference to some embodiments of the second aspect, in some embodiments, the first service is ranging SL positioning.

With reference to some embodiments of the second aspect, in some embodiments, the PC5 application is a ProSe application or a V2X application.

With reference to some embodiments of the second aspect, in some embodiments, the direct discovery process includes at least one of:

a terminal direct discovery process with ProSe function;

terminal discovery procedure with V2X functionality.

With reference to some embodiments of the second aspect, in some embodiments, the discovery request message includes at least one of:

a direct discovery request message of a first service;

the group member discovery request message for the first service.

With reference to some embodiments of the second aspect, in some embodiments, the discovery notification message includes at least one of:

a discovery notification message for the first service;

a discovery notification message for a group member of a first service;

a direct communication request message for the first service.

With reference to some embodiments of the second aspect, in some embodiments, the discovery response message includes at least one of:

a direct discovery response message for the first service;

a group member discovery response message for the first service;

A direct communication response message for the first service.

In a third aspect, an embodiment of the present disclosure provides an information indication method, including: the first terminal sends a discovery request message or a broadcast sending discovery notification message to the second terminal, wherein the discovery request message or the discovery notification message is used for indicating a direct discovery process of the first service, and the discovery request message or the discovery notification message comprises a first parameter for indicating the service type of the first service; the second terminal receives a discovery request message sent by the first terminal or a discovery notification message sent by a broadcasting mode.

In a fourth aspect, an embodiment of the present disclosure proposes a first terminal, where the first terminal includes at least one of a transceiver module and a processing module; wherein the first terminal is configured to perform the optional implementation manner of the first aspect.

In a fifth aspect, an embodiment of the present disclosure proposes a second terminal, where the second terminal includes at least one of a transceiver module and a processing module; wherein the second terminal is configured to perform the optional implementation manner of the second aspect.

In a sixth aspect, an embodiment of the present disclosure proposes a first terminal, where the terminal includes: one or more processors; wherein a memory coupled to the processor has stored thereon instructions that, when executed by the processor, cause the first terminal to perform the alternative implementations of the first and third aspects.

In a seventh aspect, an embodiment of the present disclosure proposes a second terminal, where the second terminal includes: one or more processors; a memory coupled to the processor, the memory having instructions stored thereon that, when executed by the processor, cause the second terminal to perform the alternative implementations of the second and fourth aspects.

In an eighth aspect, an embodiment of the present disclosure proposes a communication system including: a first terminal and a second terminal; wherein the terminal is configured to perform the method as described in the alternative implementation of the first aspect and the second terminal is configured to perform the method as described in the alternative implementation of the second aspect.

In a ninth aspect, embodiments of the present disclosure provide a storage medium storing instructions that, when executed on a communication device, cause the communication device to perform a method as described in the alternative implementations of the first and second aspects.

In a tenth aspect, embodiments of the present disclosure propose a program product which, when executed by a communication device, causes the communication device to perform the method as described in the alternative implementations of the first and second aspects.

In an eleventh aspect, embodiments of the present disclosure propose a computer program which, when run on a computer, causes the computer to carry out the method as described in the alternative implementations of the first and second aspects.

In a twelfth aspect, embodiments of the present disclosure provide a chip or chip system. The chip or chip system comprises a processing circuit configured to perform the method described in accordance with alternative implementations of the first and second aspects described above.

It will be appreciated 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 described above are all configured to perform the methods set forth in the embodiments of the present disclosure. Therefore, the advantages achieved by the method can be referred to as the advantages of the corresponding method, and will not be described herein.

The embodiment of the disclosure provides an information indication method and a terminal. In some embodiments, the terms information indicating method and information processing method, communication method, and the like may be replaced with each other.

The embodiments of the present disclosure are not intended to be exhaustive, but rather are exemplary of some embodiments and are not intended to limit the scope of the disclosure. In the case of no contradiction, each step in a certain embodiment may be implemented as an independent embodiment, and the steps may be arbitrarily combined, for example, a scheme in which part of the steps are removed in a certain embodiment may also be implemented as an independent embodiment, the order of the steps in a certain embodiment may be arbitrarily exchanged, and further, alternative implementations in a certain embodiment may be arbitrarily combined; furthermore, various embodiments may be arbitrarily combined, for example, some or all steps of different embodiments may be arbitrarily combined, and an embodiment may be arbitrarily combined with alternative implementations of other embodiments.

In the various embodiments of the disclosure, terms and/or descriptions of the various embodiments are consistent throughout the various embodiments and may be referenced to each other in the absence of any particular explanation or logic conflict, and features from different embodiments may be combined to form new embodiments in accordance with their inherent logic relationships.

The terminology used in the embodiments of the disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure.

In the presently disclosed embodiments, elements that are referred to in the singular, such as "a," "an," "the," "said," etc., may mean "one and only one," or "one or more," "at least one," etc., unless otherwise indicated. For example, where an article (article) is used in translation, such as "a," "an," "the," etc., in english, a noun following the article may be understood as a singular expression or as a plural expression.

In the presently disclosed embodiments, "plurality" refers to two or more.

In some embodiments, terms such as "at least one of", "one or more of", "multiple of" and the like may be substituted for each other.

In some embodiments, "A, B at least one of", "a and/or B", "in one case a, in another case B", "in response to one case a", "in response to another case B", and the like, may include the following technical solutions according to circumstances: in some embodiments a (a is performed independently of B); b (B is performed independently of a) in some embodiments; 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 performed). Similar to that described above when there are more branches such as A, B, C.

In some embodiments, the description modes such as "a or B" may include the following technical schemes according to circumstances: in some embodiments a (a is performed independently of B); b (B is performed independently of a) in some embodiments; in some embodiments execution is selected from a and B (a and B are selectively executed). Similar to that described above when there are more branches such as A, B, C.

The prefix words "first", "second", etc. in the embodiments of the present disclosure are only for distinguishing different description objects, and do not limit the location, order, priority, number, content, etc. of the description objects, and the statement of the description object refers to the claims or the description of the embodiment context, and should not constitute unnecessary limitations due to the use of the prefix words. For example, if the description object is a "field", the ordinal words before the "field" in the "first field" and the "second field" do not limit the position or the order between the "fields", and the "first" and the "second" do not limit whether the "fields" modified by the "first" and the "second" are in the same message or not. For another example, describing an object as "level", ordinal words preceding "level" in "first level" and "second level" do not limit priority between "levels". As another example, the number of descriptive objects is not limited by ordinal words, and may be one or more, taking "first device" as an example, where the number of "devices" may be one or more. Furthermore, objects modified by different prefix words may be the same or different, e.g., the description object is "a device", then "a first device" and "a second device" may be the same device or different devices, and the types may be the same or different; for another example, the description object is "information", and the "first information" and the "second information" may be the same information or different information, and the contents thereof may be the same or different.

In some embodiments, "comprising a", "containing a", "for indicating a", "carrying a", may be interpreted as carrying a directly, or as indicating a indirectly.

In some embodiments, terms "responsive to … …", "responsive to determination … …", "in the case of … …", "at … …", "when … …", "if … …", "if … …", and the like may be interchanged.

In some embodiments, terms "greater than", "greater than or equal to", "not less than", "more than or equal to", "not less than", "above" and the like may be interchanged, and terms "less than", "less than or equal to", "not greater than", "less than or equal to", "not more than", "below", "lower than or equal to", "no higher than", "below" and the like may be interchanged.

In some embodiments, an apparatus or the like may be interpreted as an entity, or may be interpreted as a virtual, and the names thereof are not limited to the names described in the embodiments, "apparatus," "device," "circuit," "network element," "node," "function," "unit," "section," "system," "network," "chip system," "entity," "body," and the like may be replaced with each other.

In some embodiments, a "network" may be interpreted as an apparatus (e.g., access network device, core network device, etc.) contained in a network.

In some embodiments, "access network device (access network device, AN device)", "radio access network device (radio access network device, RAN device)", "Base Station (BS)", "radio base station (radio base station)", "fixed station (fixed station)", "node (node)", "access point (access point)", "transmit point (transmission point, TP)", "Receive Point (RP)", "transmit and/or receive point (transmit/receive point), the terms TRP)", "panel", "antenna array", "cell", "macrocell", "microcell", "femto cell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier (component carrier)", bandwidth part (BWP) and the like may be replaced with each other.

In some embodiments, "terminal," terminal device, "" user equipment, "" user terminal, "" mobile station, "" mobile terminal, MT) ", subscriber station (subscriber station), mobile unit (mobile unit), subscriber unit (subscriber unit), wireless unit (wireless unit), remote unit (remote unit), mobile device (mobile device), wireless device (wireless device), wireless communication device (wireless communication device), remote device (remote device), mobile subscriber station (mobile subscriber station), access terminal (access terminal), mobile terminal (mobile terminal), wireless terminal (wireless terminal), remote terminal (remote terminal), handheld device (handset), user agent (user agent), mobile client (mobile client), client (client), and the like may be substituted for each other.

In some embodiments, the access network device, core network device, or network device may be replaced with a terminal. For example, the embodiments of the present disclosure may also be applied to a configuration in which an access network device, a core network device, or communication between a network device and a terminal is replaced with communication between a plurality of terminals (for example, device-to-device (D2D), vehicle-to-device (V2X), or the like). In this case, the terminal may have all or part of the functions of the access network device. In addition, terms such as "uplink", "downlink", and the like may be replaced with terms corresponding to communication between terminals (e.g., "side)". For example, uplink channels, downlink channels, etc. may be replaced with side-uplink channels, uplink, downlink, etc. may be replaced with side-downlink channels.

In some embodiments, the terminal may be replaced with an access network device, a core network device, or a network device. In this case, the access network device, the core network device, or the network device may have all or part of the functions of the terminal.

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

In some embodiments, data, information, etc. may be obtained after user consent is obtained.

Furthermore, each element, each row, or each column in the tables of the embodiments of the present disclosure may be implemented as a separate embodiment, and any combination of elements, any rows, or any columns may also be implemented as a separate embodiment.

In the embodiments of the present disclosure, the expressions of ranging side-link positioning, ranging and side-link positioning, ranging SL positioning, ranging and SL positioning refer to the same meaning, and any two are interchangeable.

Fig. 1 is a schematic diagram of a communication system according to an embodiment of the present disclosure.

As shown in fig. 1, the communication system 100 includes a terminal (terminal) 101 and a network device 102.

In some embodiments, the terminal 101 includes at least one of a mobile phone (mobile phone), a wearable device, an internet of things device, a communication enabled car, a smart car, a tablet (Pad), a wireless transceiver enabled computer, a Virtual Reality (VR) terminal device, an augmented reality (augmented reality, AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in unmanned (self-driving), a wireless terminal device in teleoperation (remote medical surgery), a wireless terminal device in smart grid (smart grid), a wireless terminal device in transportation security (transportation safety), a wireless terminal device in smart city (smart city), a wireless terminal device in smart home (smart home), for example, but is not limited thereto.

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, and the access network device may include at least one of an evolved NodeB (eNB), a next generation evolved NodeB (next generation eNB, ng-eNB), a next generation NodeB (next generation NodeB, gNB), a NodeB (node B, NB), a Home NodeB (HNB), a home NodeB (home evolved nodeB, heNB), a wireless backhaul device, a radio network controller (radio network controller, RNC), a base station controller (base station controller, BSC), a base transceiver station (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 (closed RAN), a base station in other communication systems, 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 groups of devices, including all or part of the first network function, the second network function, etc., respectively. The network functions may be virtual or physical. The core network comprises, for example, at least one of an evolved packet core (evolved packet core, EPC), a 5G core network (5G core network,5GCN), a next generation core (next generation core, NGC).

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

In some embodiments, the first network function is used for access control and mobility management of the terminal to the operator network, including, for example, functions such as mobility state management, assigning a temporary identity to a user, authenticating and authorizing the user, and the like, the name of which is not limited thereto.

It may be understood that, the communication system described in the embodiments of the present disclosure is for more clearly describing the technical solutions of the embodiments of the present disclosure, and is not limited to the technical solutions provided in the embodiments of the present disclosure, and those skilled in the art can know that, with the evolution of the system architecture and the appearance of new service scenarios, the technical solutions provided in the embodiments of the present disclosure are applicable to similar technical problems.

The embodiments of the present disclosure described below may be applied to the communication system 100 shown in fig. 1, or a part of the main body, but are not limited thereto. The respective bodies shown in fig. 1 are examples, and the communication system may include all or part of the bodies in fig. 1, or may include other bodies than fig. 1, and the number and form of the respective bodies may be arbitrary, and the respective bodies may be physical or virtual, and the connection relationship between the respective bodies is examples, and the respective bodies may not be connected or may be connected, and the connection may be arbitrary, direct connection or indirect connection, or wired connection or wireless connection.

The embodiments of the present disclosure may be applied to long term evolution (long term evolution, LTE), LTE-Advanced (LTE-a), LTE-beyond (LTE-B), upper 3G, IMT-Advanced, fourth generation mobile communication system (4th generation mobile communication system,4G)), fifth generation mobile communication system (5th generation mobile communication system,5G), 5G new air (new radio, NR), future wireless access (future radio access, FRA), new wireless access technology (new-radio access technology, RAT), new wireless (new radio, NR), new wireless access (new radio access, NX), future generation wireless access (future generation radio access, FX), global System for mobile communications (GSM (registered trademark)), CDMA2000, ultra mobile broadband (ultra mobile broadband, UMB), IEEE 802.11 (registered trademark), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, ultra wideband-wide band, UWB), bluetooth (registered trademark), mobile communication network (public land mobile network, device to the internet of things (V-24), device to the internet of things (internet of things), machine-2, internet of things (internet of things), machine-based systems (internet of things), internet of things (2, internet of things (V-2, internet of things), and other systems. In addition, a plurality of system combinations (e.g., LTE or a combination of LTE-a and 5G, etc.) may be applied.

Distance measurement: refers to determining the distance between terminals and/or the direction of one terminal (i.e., the target terminal) from another terminal (i.e., the reference terminal) through the PC5 interface.

Positioning a terminal: a Sidelink (SL) reference terminal whose position is known or can be known using Uu-based positioning. The positioning terminal may be used to determine the location of the target terminal using side-link positioning.

SL reference terminal: a terminal supports positioning of a target terminal, e.g., by transmitting and/or receiving reference signals, providing positioning related information using Side Links (SL), etc.

Side-link positioning: the absolute position, relative position, or ranging information is acquired using the PC5 positioning terminal.

SL positioning client terminal: a third party terminal, other than the SL reference terminal and the target terminal, initiates a ranging/sidelink location service request on behalf of an application residing thereon.

And (2) injection: the SL positioning client terminal does not have to support the ranging/side-uplink positioning function, but communication between the SL positioning client terminal and the SL reference terminal/target terminal has to be established through the PC5 or 5G core network (the 5th generation core,5GC) to transmit service requests and results.

SL positioning server terminal: terminals that facilitate data distribution and/or position calculation functions are determined for side-uplink positioning and ranging based services providing methods. It interacts with other terminals as needed through the PC5 to determine the ranging/SL location method, distribute assistance data and calculate the location of the target terminal. The target terminal or SL reference terminal may act as a SL positioning server terminal if any functionality is supported.

Target terminal: the terminals for measuring distance, direction and/or position using SL in a ranging based service SL positioning are supported by one or more SL reference terminals.

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

The side-link positioning provides absolute position, relative position, or ranging information of the terminal by positioning using the PC 5. The positioning terminal may be used to determine the absolute position of the target terminal using side-link positioning.

The ranging/side-link positioning operation may be performed through a network-assisted operation, a network-based operation, or a terminal-only operation:

in network-based operation, 5GC Network Functions (NF)(s) are involved for service request processing and result calculation.

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

In network assisted operation, the 5GC NF(s) participates in the service request processing and assists the terminal in the result calculation.

The ranging/sidelink location service request may be initiated by a terminal (i.e., SL location client terminal, target terminal, SL reference terminal), 5GC NF, location service (location services, LCS) client or application function (application function, AF). Thus, ranging/side-link positioning terminal discovery and selection by the PC5 is required to support the ranging/side-link positioning service.

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

In some embodiments, a vehicle to X (V2X) communication flow at the PC5 reference point supports V2X terminal discovery. When using unicast mode V2X communication procedure, the traffic type in layer 2 link setup procedure indicates "ranging/sidelink positioning"; when using broadcast mode or multicast mode V2X communication flows, the traffic type indicates "ranging/side-link positioning".

Terminal discovery (including business and public safety use cases) supporting 5G proximity services (ProSe) both support mode a (mode a) and mode B (mode B) discovery. In the direct discovery process of the ranging/SL positioning terminal, the discovery type indicates ranging/side-link positioning; during ranging/SL positioning group member discovery, an application layer group Identification (ID) indicates the range/side uplink positioning group to which the terminal belongs. Wherein the discovery of the mode a (Model a) may use a single discovery protocol message (an discovery), the first terminal issuing the message sends a discovery notification message, the discovery of the mode B (Model B) may use two discovery protocol messages (request and response), the first terminal (the discoverer terminal) sends a discovery request message, and the second terminal (the discoveree terminal) sends a discovery response message.

In some embodiments, as shown in fig. 2A, ranging SL positioning terminal discovery procedure is performed using a Model a discovered terminal with 5G ProSe function.

Wherein, in step 1, a first terminal (or called an announcing UE) (UE-1) sends a ranging/SL location notification message. The ranging/SL positioning notification message includes a type of the discovery message, a security protection element, ranging and sidelink positioning protocol (ranging and sidelink positioning protocol, RSPP) metadata information, and a user information ID of the first terminal.

In some embodiments, as shown in fig. 2B, a procedure supporting 5G ProSe for ranging/SL positioning terminal discovery is used in Model B discovery.

Wherein, step 1, a first terminal (or referred to as a finder terminal) (UE-1) sends a ranging/SL location request message. The ranging/SL location request message includes a type of discovery message, a security protection element, a user information ID of the finder terminal, target information, a user information ID of the first terminal, and optionally RSPP metadata information.

Step 2, a second terminal (also called a discoveree terminal) that matches the ranging/SL location request message (e.g., RSPP metadata information) responds to the first terminal with a ranging/SL location response message. The ranging/SL location 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 fig. 2C, a procedure supporting 5G ProSe for ranging/SL positioning group member discovery is used in Model a discovery.

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

In some embodiments, as shown in fig. 2D, a procedure supporting 5G ProSe for ranging/SL positioning group member discovery is used in Model B discovery.

Wherein, in step 1, a first terminal (also called a finder terminal) (UE-1) sends a ranging/SL group member discovery request message. The request message comprises the type of discovery message, the group ID, optionally the user information ID of the first terminal, and optionally RSPP metadata information.

Step 2, a second terminal (also called a discoveree terminal) that matches the parameter values (including the group ID and the user information ID of the first terminal) included in the ranging/SL group member discovery request message responds to the first terminal using the ranging/SL group member discovery response message. The ranging/SL location response message includes a type of the discovery message, a second user information ID, RSPP metadata information, and a group ID.

In some embodiments, a 5G ProSe direct discovery message is sent by the terminal over the PC5 interface for open 5G ProSe direct discovery and limited 5G ProSe direct discovery. The corresponding discovery messages comprise a ProSe direct discovery PC5 message type (ProSe direct discovery PC message type), wherein the ProSe direct discovery PC5 message type comprises three parts of a discovery type value, a content type value and a mode type value, and the message type of each discovery message is identified by different values of three part parameters of the ProSe direct discovery PC5 message type.

In some embodiments, the ProSe direct discovery PC5 message type (ProSe direct discovery PC message type) in the open 5G ProSe direct discovery notification message has a value of: the discovery type value is "Open discovery" (Open discovery), and the content type value is "notification" (notify).

In some embodiments, the ProSe direct discovery PC5 message type in the limited 5G ProSe direct discovery notification message has a value of: the discovery type value is "limited discovery (Restricted discovery)", and the content type value is "notification (notification)".

In some embodiments, the ProSe direct discovery PC5 message type in the limited 5G ProSe direct discovery request message takes the following values: the discovery type value is "restricted discovery (Restricted discovery)", and the content type value is "request (Solicitation)".

In some embodiments, the ProSe direct discovery PC5 message type in the limited 5G ProSe direct discovery response message has the following value: the discovery type value is "limited discovery (Restricted discovery)", and the content type value is "response".

In some embodiments, the ProSe direct discovery PC5 message type in the ProSe PC5 discovery message of the group member discovery notification has a value of: the discovery type value is "restricted discovery (Restricted discovery)", the content type value is "group member discovery notification/group member discovery response (Group member discovery announcement/group member discovery response)", and the pattern type value is "pattern a (Model a)".

In some embodiments, the ProSe direct discovery PC5 message type in the ProSe PC5 discovery message of the group member discovery request has a value of: the discovery type value is "restricted discovery (Restricted discovery)", the content type value is "group member discovery request (Group member discovery solicitation)", and the mode type value is "mode B (Model B)".

In some embodiments, the ProSe direct discovery PC5 message type in the ProSe PC5 discovery message of the group member discovery response has a value of: the discovery type value is "restricted discovery (Restricted discovery)", the content type value is "group member discovery notification/group member discovery response (Group member discovery announcement/group member discovery response)", and the mode type value is "mode B (Model B)".

In some embodiments, proSe directly discovers the PC5 message type parameters as shown in figure 2E and table 1 below,

as shown in fig. 2E, proSe directly discovers that the PC5 message type is a type 1 information element of length 1 octet.

TABLE 1

Table 1 above is ProSe direct discovery PC5 message type parameters.

Note 1: the content type "0000" (notification/response) is used for the operations of the Model a first terminal (Model a) and the Model B second terminal (discoveree terminal).

And (2) injection: the content type "0100" (terminal-to-network relay discovery notification or terminal-to-network relay discovery response) is used for Model a first terminal (Model B) operation or Model B second terminal (discoveree terminal) operation.

And (3) injection: the content type "0110" (group member discovery notification or group member discovery response) is used for the operation of the Model a first terminal (Model a) or the Model B second terminal (discoveree terminal).

In some embodiments, the direct discovery process based on the first service cannot be indicated based on the discovery message type, and thus the first terminal is required to indicate to the second terminal to conduct the direct discovery process based on the first service.

Based on this, the embodiment of the disclosure provides an information indication method and a terminal, wherein the method executed by a first terminal includes: and transmitting a discovery request message or a broadcast transmission discovery notification message to the second terminal, wherein the discovery request message or the discovery notification message is used for indicating that the direct discovery process of the first service is performed, and the discovery request message or the discovery notification message comprises a first parameter for indicating the service type of the first service. Thus, the first terminal may instruct the second terminal to perform a direct discovery process based on the first service by transmitting a discovery request message or a broadcast transmission discovery notification message to the second terminal, the discovery request message or the discovery notification message including a first parameter for indicating a service type of the first service, so as to ensure that the first service is normally executed.

Fig. 3A is an interactive schematic diagram illustrating an information indication method according to an embodiment of the present disclosure. As shown in fig. 3A, an embodiment of the present disclosure relates to an information indication method, which includes:

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

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

In some embodiments, the discovery request message is used to indicate that a direct discovery process of the first service is to be performed.

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 indicating a traffic type of the first traffic.

In the embodiment of the disclosure, the first terminal sends a discovery request message to the second terminal, where the discovery request message is used to indicate a direct discovery process of performing the first service, and the discovery request message includes a first parameter used to indicate a service type of the first service. Thereby, the second terminal can recognize the discovery request message as a discovery message for the ranging SL positioning procedure.

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

In some embodiments, the new parameter is a Service type (Service type), but is not limited thereto, and the new parameter may also be given other names.

In some embodiments, the first parameter corresponds to a proximity services communication PC5 application, the first parameter being a PC5 application identifier; or the first parameter corresponds to the plurality of PC5 applications, and the first parameter is a common prefix or a common sub-prefix of the plurality of 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 one PC5 application, and the first parameter may be a PC5 application identifier.

In the embodiment of the disclosure, 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 a plurality of PC5 application identifiers.

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

Illustratively, the new parameter is a service type, which corresponds to one or more PC5 applications, and if the service type corresponds to one PC5 application, the service type may be indicated by a PC5 application identifier. If the traffic type corresponds to multiple PC5 applications, the traffic type may be indicated by a common part, such as a common prefix or a common sub-prefix of ProSe application identifiers allocated for ProSe applications under the same traffic type. Or the traffic type may be a value of a PC5 application type, the traffic type may be separate from the encoding of the application identifier, wherein the traffic type may be defined independent of the application layer.

Illustratively, as shown in fig. 4A, the new parameter is a schematic diagram of an independent PC5 service type parameter.

In some embodiments, the traffic type value is included in the ProSe direct discovery message with an existing ProSe direct discovery PC5 message type to identify the ProSe direct discovery message type for the first traffic.

In some embodiments, the traffic type value may be included in the ProSe direct discovery message together as a subparameter of the extended ProSe direct discovery PC5 message type to identify the ProSe direct discovery message type for the first traffic.

Illustratively, as shown in fig. 4B, the new parameter is a schematic diagram of extended ProSe direct discovery PC5 message type parameter.

In some embodiments, the traffic type may be a PC5 traffic type, or may also be a ProSe traffic type or a V2X traffic type.

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

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

In the disclosed embodiment, the "content type value" of the "ProSe direct discovery PC5 message type parameter" is extended to identify a PC5 direct discovery message for ranging SL positioning.

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, and both the "discovery type value" and the "discovery mode value" of the "ProSe direct discovery PC5 message type parameter" can be reused directly to perform corresponding values according to requirements.

TABLE 2

It should be noted that each element, each row, or each column in the table of the embodiments of the present disclosure may be implemented as a separate embodiment, and any combination of elements, any row, and any column may also be implemented as a separate embodiment.

Note that the content type "1001" (group member discovery notification of ranging-side uplink positioning service/group member discovery response of ranging-side uplink positioning service) is used for a group member discovery notification message of a Model a first terminal (announcing) or a group member discovery response message of a Model B second terminal (discoveree terminal), but not limited thereto, the content type "1001" may also be used to indicate other operations.

Note that the content type "1010" (group member discovery request of ranging-side uplink positioning service) is used for the discovery request message of the Model B first terminal (finder terminal), but not limited thereto, the content type "1010" may also be used to indicate other operations.

Note that the content type "1110" (terminal discovery notification of ranging-side uplink positioning service/terminal discovery response of ranging-side uplink positioning service) is used for a discovery notification message of a Model a first terminal (announcing) or a discovery response message of a Model B second terminal (discoveree terminal), but not limited thereto, the content type "1110" may also be used to indicate other operations.

Note that the content type "1111" (terminal discovery request for ranging-side uplink positioning service) is used for the discovery request message of the Model B first terminal (finder terminal), but not limited thereto, the content type "1111" may also be used to indicate other operations.

It should be further noted that, the content type may also be other values than the examples in table 2 to indicate the content indicated by any one of "1001", "1010", "1110", "1111", which is not limited in particular by the embodiments of the present disclosure.

In some embodiments, the PC5 application is a ProSe application or a car networking V2X application, but is not limited thereto, and may be other applications as well.

In some embodiments, the direct discovery process includes at least one of:

a terminal direct discovery process with ProSe function;

Terminal discovery procedure with V2X functionality.

In the embodiments of the present disclosure, for terminals supporting V2X, the V2X traffic type corresponding to the V2X application identifier may be used to identify a transmitted message for ranging SL positioning. However, if the PC5 traffic type is shared with the V2X-enabled terminal and the ProSe-enabled terminal to identify a message for ranging SL positioning, an additional PC5 traffic type indicating a ranging SL positioning service will be included in the correlation process.

In some embodiments, the discovery request message includes at least one of:

a direct discovery request message of a first service;

a group member discovery request message for a first service;

a direct communication request message for the first service.

In some embodiments, as shown in fig. 2B, in the Ranging SL positioning terminal discovery using the mode B (Model B) discovery supporting 5G ProSe, 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 Ranging/SL Positioning Solicitation message.

In some embodiments, as shown in fig. 2B, at least one of 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 RSPP metadata information is further included in the direct discovery request message of the first service.

In some embodiments, as shown in fig. 2D, in the Ranging SL positioning group member discovery using the terminal of Model B discovery support for 5G ProSe, 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 a discovery message type, a user information ID of the first terminal, a group ID, a user information ID of the second terminal, and RSPP metadata information.

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

In the above various embodiments, the discovery message type may be, for example, the above traffic type+existing ProSe direct discovery PC5 message type, or an extended ProSe direct discovery PC5 message type including a traffic type, or a ProSe direct discovery PC5 message type extended with a 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 a discovery request message sent by the first terminal.

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

The description of the first parameter may be referred to the description of the first parameter in S201A, which is not repeated here.

In some embodiments, the discovery response message includes at least one of:

a direct discovery response message for the first service;

a group member discovery response message for the first service;

a direct communication response message for the first service.

In some embodiments, as shown in fig. 2B, in the Ranging SL positioning terminal discovery process using the Model B discovery 5G ProSe enabled terminal, 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, at least one of a discovery message type, a security protection element, RSPP metadata information, and a user information ID of the second terminal is further included in the direct discovery response message of the first service.

In some embodiments, as shown in fig. 2D, in the Ranging SL positioning group member discovery process using the Model B discovery 5G ProSe enabled terminal, the discovery response message sent by the second terminal is a group member discovery response message (Ranging/SL Positioning Group member discovery Response message) of the first service.

In some embodiments, as shown in fig. 2D, at least one of a discovery message type, a user information ID of the second terminal, RSPP metadata information, and a group ID is further included in the group member discovery response message of the first service.

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

In some embodiments, the names of information and the like are not limited to the names described in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "instruction", "command", "channel", "parameter", "field", "symbol", "codebook", "code word", "code point", "bit", "data", "program", "chip", and the like may be replaced with each other.

In some embodiments, terms such as "uplink," "physical uplink," and the like may be interchanged, terms such as "downlink," "physical downlink," and the like may be interchanged, terms such as "side," "side link," "side communication," "side link," "direct link," and the like may be interchanged.

In some embodiments, terms such as "time of day," "point of time," "time location," and the like may be interchanged, and terms such as "duration," "period," "time window," "time," and the like may be interchanged.

In some embodiments, "acquire," "obtain," "receive," "transmit," "bi-directional transmit," "send and/or receive" may be used interchangeably and may be interpreted as receiving from other principals, acquiring from protocols, acquiring from higher layers, processing itself, autonomous implementation, etc.

In some embodiments, terms such as "send," "transmit," "report," "send," "transmit," "bi-directional," "send and/or receive," and the like may be used interchangeably.

In some embodiments, terms such as "specific (specific)", "predetermined", "preset", "set", "indicated", "certain", "arbitrary", "first", and the like may be replaced with each other, and "specific a", "predetermined a", "preset a", "set a", "indicated a", "certain a", "arbitrary a", "first a" may be interpreted as a predetermined in a protocol or the like, may be interpreted as a obtained by setting, configuring, or indicating, or the like, may be interpreted as specific a, certain a, arbitrary a, or first a, or the like, but are not limited thereto.

The communication method according to the embodiment of the present disclosure may include at least one of S301A to S302A. For example, S301A may be implemented as a separate embodiment and S302A may be implemented as a separate 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 alternative implementations described before or after the description corresponding to fig. 3A.

Fig. 3B is an interactive schematic diagram of an information indication method according to an embodiment of the disclosure. As shown in fig. 3B, an embodiment of the present disclosure relates to an information indication method, which includes:

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

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

In some embodiments, the discovery notification message is used to indicate that a direct discovery process of the first service is to be performed.

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

In the embodiment of the disclosure, the first terminal sends a discovery notification message to the second terminal, where 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 used to indicate a service type of the first service. Thereby, the second terminal can recognize the discovery notification message as a discovery message for the ranging SL positioning procedure.

In some embodiments, the "content type value" of the extended "ProSe direct discovery PC5 message type parameter" is as shown in table 2 above.

In some embodiments, the direct discovery process includes at least one of:

a terminal direct discovery process with ProSe function;

terminal discovery procedure with V2X functionality.

In the embodiments of the present disclosure, for terminals supporting V2X, the V2X traffic type corresponding to the V2X application identifier may be used to identify a transmitted message for ranging SL positioning. However, if the PC5 traffic type is shared with the V2X-enabled terminal and the ProSe-enabled terminal to identify a message for ranging SL positioning, an additional PC5 traffic type indicating a ranging SL positioning service will be included in the correlation procedure.

In some embodiments, the discovery notification message includes at least one of:

a discovery notification message for the first service;

discovery notification messages for group members of a first service.

In some embodiments, as shown in fig. 2A, in the Ranging SL positioning terminal discovery using the mode a (Model a) to discover the terminal supporting 5G ProSe, 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 Ranging/SL Positioning Announcement message.

In some embodiments, as shown in fig. 2A, the first terminal (UE-1) transmits a discovery notification message of the first service, the discovery notification message of the first service further including 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 fig. 2C, in the Ranging SL positioning terminal discovery using the terminal of Model a discovery support for 5G ProSe, the discovery request message sent by the first terminal is a discovery notification message of a group member of the first service, for example, the discovery notification message of the group member of the first service is Ranging/SL Positioning Group member discovery Announcement message.

In some embodiments, as shown in fig. 2C, the first terminal (UE-1) transmits a discovery notification message of a group member of the first service, the discovery notification message of the group member of the first service further including at least one of a discovery message type, a user information ID of the first terminal, a group ID, and RSPP metadata information.

Fig. 5A is an interactive schematic diagram illustrating an information indication method according to an embodiment of the present disclosure. As shown in fig. 5A, an embodiment of the present disclosure relates to an information indicating method, which is performed by a first terminal, the method including:

S501A, a discovery request message is sent.

The optional implementation of S501A may refer to the optional implementation of S301A in fig. 3A, and other relevant parts in the embodiment related to fig. 3A, which are not described herein.

In some embodiments, the first terminal transmits the discovery request message to the second terminal, but is not limited thereto, and the discovery request message may be transmitted to other bodies.

In some embodiments, the discovery request message is for indicating to conduct a direct discovery process for the first service, the discovery request message including a first parameter for indicating a service type of the first service.

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

In some embodiments, the first traffic is ranging side uplink SL positioning.

In some embodiments, the PC5 application is a ProSe application or a car networking V2X application.

In some embodiments, the direct discovery process includes at least one of:

a terminal direct discovery process with ProSe function;

terminal discovery procedure with V2X functionality.

In some embodiments, the discovery request message includes at least one of:

a direct discovery request message of a first service;

a group member discovery request message for a first service;

a direct communication request message for the first service.

S502A, obtaining a discovery response message.

The optional implementation of S502A may refer to the optional implementation of S302A in fig. 3A, and other relevant parts in the embodiment related to fig. 3A, which are not described herein.

In some embodiments, the first terminal receives the discovery response message transmitted by the second terminal, but is not limited thereto, and may also receive the discovery response message transmitted by other bodies.

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

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

In some embodiments, the first terminal processes to obtain the 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-mentioned function is default or default.

In some embodiments, the discovery response message is configured to respond to a discovery request message sent by the first terminal, where the discovery response message includes a first parameter indicating a service type of the first service.

The description of the first parameter may be referred to the description of the foregoing embodiments, which is not repeated herein.

In some embodiments, the discovery response message includes at least one of:

a direct discovery response message for the first service;

a group member discovery response message for the first service;

a direct communication response message for the first service.

The communication method according to the embodiment of the present disclosure may include at least one of S501A to S502A. For example, S501A may be implemented as a separate embodiment and S502A may be implemented as a separate 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.

Fig. 5B is an interactive schematic diagram of an information indication method according to an embodiment of the disclosure. As shown in fig. 5B, an embodiment of the present disclosure relates to an information indicating method, which is performed by a first terminal, the method including:

S501B, a discovery notification message is sent.

The optional implementation of S501B may refer to the optional implementation of S301B in fig. 3B, and other relevant parts in the embodiment related to fig. 3B, which are not described herein.

In some embodiments, the first terminal transmits the discovery notification message to the second terminal, but is not limited thereto, and the discovery notification message may be transmitted to other bodies.

In some embodiments, a discovery notification message is used to indicate that a direct discovery process of a first service is to be performed, the discovery notification message including a first parameter indicating a service type of the first service.

In some embodiments, the first traffic is ranging side uplink SL positioning.

a discovery notification message for the first service;

discovery notification messages for group members of a first service.

Fig. 6A is an interactive schematic diagram illustrating an information indication method according to an embodiment of the present disclosure. As shown in fig. 6A, an embodiment of the present disclosure relates to an information indicating method, which is performed by a second terminal, the method including:

S601A, a discovery request message is acquired.

The optional implementation of S601A may refer to the optional implementation of S301A in fig. 3A, and other relevant parts in the embodiment related to fig. 3A, which are not described herein.

In some embodiments, the second terminal receives the discovery request message transmitted by the first terminal, but is not limited thereto, and may also receive the discovery request message transmitted by other bodies.

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

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

In some embodiments, the second terminal processes to obtain the 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-mentioned function is default or default.

In some embodiments, the first traffic is ranging side uplink SL positioning.

In some embodiments, the direct discovery process includes at least one of:

a terminal direct discovery process with ProSe function;

terminal discovery procedure with V2X functionality.

In some embodiments, the discovery request message includes at least one of:

a direct discovery request message of a first service;

a group member discovery request message for a first service;

a direct communication request message for the first service.

S602A, a discovery response message is sent.

The optional implementation of S602A may refer to the optional implementation of S302A in fig. 3A, and other relevant parts in the embodiment related to fig. 3A, which are not described herein.

In some embodiments, the second terminal transmits the discovery response message to the first terminal, but is not limited thereto, and may transmit the discovery response message to other bodies.

In some embodiments, the discovery response message includes at least one of:

a direct discovery response message for the first service;

a group member discovery response message for the first service;

a direct communication response message for the first service.

The communication method according to the embodiment of the present disclosure may include at least one of S601A to S602A. For example, S601A may be implemented as a separate embodiment, and S602A may be implemented as a separate 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.

Fig. 6B is an interactive schematic diagram of an information indication method according to an embodiment of the disclosure. As shown in fig. 6B, an embodiment of the present disclosure relates to an information indicating method, which is performed by a second terminal, the method including:

S601B, a discovery notification message is acquired.

The optional implementation of S601B may refer to the optional implementation of S301B in fig. 3B, and other relevant parts in the embodiment related to fig. 3B, which are not described herein.

In some embodiments, the second terminal receives the discovery notification message transmitted by the first terminal, but is not limited thereto, and may also receive the discovery notification message transmitted by other bodies.

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

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

In some embodiments, the second terminal processes 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-mentioned function is default or default.

In some embodiments, the discovery notification message is for indicating that a direct discovery process of the first service is performed, and the discovery request message includes a first parameter for indicating a service type of the first service.

In some embodiments, the first traffic is ranging side uplink SL positioning.

a discovery notification message for the first service;

discovery notification messages for group members of a first service.

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

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

A method for identifying messages directly found by a PC5 for ranging SL positioning, comprising:

in some embodiments, a method is defined to identify that the PC5 directly discovers messages for ranging SL positioning, define a new message or multiplex existing messages.

In other embodiments, parameters with specific values are used to identify each message directly found by the PC5 for ranging SL positioning and to process the message accordingly in a corresponding process.

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

For example, the service type, which represents a type of PC5 service, which identifies different service types of PC5 service, the ranging SL location service is a type of PC5 service identified by a value of the service type, comprising:

the traffic type corresponds to one or more PC5 applications. If the service type corresponds to a PC5 application, the service type may be indicated by a PC5 application identifier. If the traffic type corresponds to multiple PC5 applications, the traffic type may be a common part, such as a common prefix or sub-prefix of ProSe application identifiers allocated for ProSe applications under the same traffic type. Alternatively, the traffic type may be a value of a PC5 application type, the traffic type may be separate from the encoding of the application identifier, wherein the traffic type may be defined independent of the application layer.

In some embodiments, the traffic type may be encoded as a subparameter of an independent parameter or another parameter.

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

In some embodiments, the traffic type may be shared to V2X-enabled terminals and ProSe-enabled terminals.

In some embodiments, as shown in fig. 2A, a procedure of terminal discovery for ranging SL positioning is performed in Model a discovery using a terminal supporting 5G ProSe.

Step 1, a first terminal (UE-1) transmits a ranging SL location notification message. The ranging SL location notification message includes a type of the discovery message, a service type indicating ranging SL location or ProSe application identifier indicating ranging SL location, a security protection element, RSPP metadata information, and a user information ID of the first terminal. The type of the discovery message is identified by a service type, and ProSe directly discovers a discovery type value of a PC5 message type, wherein the service type is indicated as ranging SL positioning service type, the discovery type value is "Restricted discovery", the content type value is "antenna", and the mode type value is "Model a".

In some embodiments, as shown in fig. 2B, a procedure for terminal discovery supporting 5G ProSe for ranging SL positioning is used in Model B discovery.

Step 1, a first terminal (also called a finder terminal) (UE-1) sends a ranging/SL location request message. The ranging SL location request message includes a type of discovery message, a service type indicating ranging SL location or ProSe application identifier indicating ranging SL location, a security protection element, optionally a user information ID of the second terminal, target information, a user information ID of the first terminal, and optionally RSPP metadata information. The type of the discovery message is identified by a service type, and ProSe directly discovers a discovery type value of a PC5 message type, wherein the service type is indicated as 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, a second terminal (also called a discoveree terminal) that matches the ranging SL location request message (e.g., RSPP metadata information) responds to the first terminal with a ranging SL location response message. The ranging SL location response message includes a discovery message type, a service type indicating ranging SL location or ProSe application identifier indicating ranging SL location, a security protection element, RSPP metadata information, a user information ID of the second terminal. The type of the discovery message is identified by a service type, and the ProSe directly discovers a discovery type value of the PC5 message type, wherein the service type is indicated as 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 fig. 2C, a procedure for group member discovery supporting 5G ProSe for ranging SL positioning is used in Model a discovery.

Step 1, a first terminal sends a ranging SL positioning group member discovery notification message. The notification message includes a type of the discovery message, a service type indicating the ranging SL location or ProSe application identifier indicating the ranging SL location, a user information ID of the first terminal, a group ID, and RSPP metadata information. Wherein the type of the discovery message is identified by a service type, and ProSe directly discovers a discovery type value of the PC5 message type, the content type value and the mode type value together, wherein the service type is indicated as 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 fig. 2D, a procedure for group member discovery supporting 5G ProSe for ranging SL positioning is used in Model B discovery.

Step 1, a first terminal (also called a finder terminal) (UE-1) sends a ranging SL positioning group member discovery request message. The request message includes the type of discovery message, a service type indicating ranging SL positioning or ProSe application identifier indicating ranging SL positioning, a user information ID of the first terminal, a group ID, a user information ID of the (optional) second terminal, and optional RSPP metadata information. Wherein the type of the discovery message is identified by a service type, and ProSe directly discovers a discovery type value of the PC5 message type, the content type value and the mode type value together, wherein the service type is indicated as 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 matching the parameter values (including the group ID and the user information ID of the second terminal) contained in the ranging SL group member discovery request message will respond to the first terminal with the ranging SL group member discovery response message. The ranging SL location response message includes a type of the discovery message, a service type indicating ranging SL location or ProSe application identifier indicating ranging SL location, a user information ID of the second terminal, RSPP metadata information, and a group ID. Wherein the type of the discovery message is identified by a service type, and ProSe directly discovers a discovery type value of the PC5 message type, the content type value and the mode type value together, wherein the service type is indicated as 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, V2X enabled terminal ranging SL located terminal discovery.

For V2X enabled terminals, the V2X traffic type corresponding to the V2X application identifier may be used to identify the transmitted message for ranging SL positioning. However, if the PC5 traffic type is shared with the V2X-enabled terminal and the ProSe-enabled terminal to identify a message for ranging SL positioning, an additional PC5 traffic type indicating a ranging SL positioning service will be included in the correlation process.

In the embodiment of the present disclosure, while supporting the ranging SL positioning by the PC5, a message defined for the ranging SL positioning may be directly found for the PC5 to perform a specific process.

In some embodiments, the "content type value" of the "ProSe direct discovery PC5 message type parameter" is extended to identify a PC5 direct discovery message for ranging SL positioning.

In some embodiments, as shown in fig. 2E, proSe directly discovers that the PC5 message type is a type 1 information element that is 1 octet in length.

In some embodiments, as shown in table 2 above, "ProSe directly discovers" content type value "of PC5 message type parameter.

The embodiments of the present disclosure also propose an apparatus for implementing any of the above methods, for example, an apparatus is proposed, where the apparatus includes a unit or a module for implementing each step performed by a terminal (e.g., a first terminal, a second terminal) in any of the above methods.

It should be understood that the division of each unit or module in the above apparatus is merely a division of a logic function, and may be fully or partially integrated into one physical entity or may be physically separated when actually implemented. Furthermore, units or modules in the apparatus may be implemented in the form of processor-invoked software: the device comprises, for example, a processor, the processor being connected to a memory, the memory having instructions stored therein, the processor invoking the instructions stored in the memory to perform any of the methods or to perform the functions of the units or modules of the device, wherein the processor is, for example, a general purpose processor, such as a central processing unit (Central Processing Unit, CPU) or microprocessor, and the memory is internal to the device or external to the device. Alternatively, the units or modules in the apparatus may be implemented in the form of hardware circuits, and part or all of the functions of the units or modules may be implemented by designing hardware circuits, which may be understood as one or more processors; for example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC), and the functions of some or all of the units or modules are implemented by designing the logic relationships of elements in the circuit; for another example, in another implementation, the above hardware circuit may be implemented by a programmable logic device (programmable logic device, PLD), for example, a field programmable gate array (Field Programmable Gate Array, FPGA), which may include a large number of logic gates, and the connection relationship between the logic gates is configured by a configuration file, so as to implement the functions of some or all of the above units or modules. All units or modules of the above device may be realized in the form of invoking software by a processor, or in the form of hardware circuits, or in part in the form of invoking software by a processor, and in the rest in the form of hardware circuits.

In the disclosed embodiments, the processor is a circuit with signal processing capabilities, and in one implementation, the processor may be a circuit with instruction reading and running capabilities, such as a central processing unit (Central Processing Unit, CPU), microprocessor, graphics processor (graphics processing unit, GPU) (which may be understood as a microprocessor), or digital signal processor (digital signal processor, DSP), etc.; in another implementation, the processor may implement a function through a logical relationship of hardware circuits that are fixed or reconfigurable, e.g., a hardware circuit implemented as an application-specific integrated circuit (ASIC) or a programmable logic device (programmable logic device, PLD), such as an FPGA. In the reconfigurable hardware circuit, the processor loads the configuration document, and the process of implementing the configuration of the hardware circuit may be understood as a process of loading instructions by the processor to implement the functions of some or all of the above units or modules. Furthermore, hardware circuits designed for artificial intelligence may be used, which may be understood as ASICs, such as neural network processing units (Neural Network Processing Unit, NPU), tensor processing units (Tensor Processing Unit, TPU), deep learning processing units (Deep learning Processing Unit, DPU), etc.

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

In some embodiments, the transceiver module 11 is configured to send a discovery request message or broadcast a discovery notification message to the second terminal, where the discovery request message or the discovery notification message is used to indicate that a direct discovery procedure of the first service is performed, and the discovery request message or the discovery notification message includes a first parameter that is used to indicate a service type of the first service.

The transceiver module 11 is configured to perform at least one of the communication steps (e.g., S301A-S302A, S301B, but not limited thereto) such as transmission and/or reception performed by the first terminal 10 in any of the above methods, and will not be described herein. Optionally, the processing module 12 is configured to perform at least one of the other steps (e.g. S301A-S302A, S301B, but not limited thereto) performed by the first terminal 10 in any of the above methods, which is not described herein.

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

In some embodiments, the processing module may be a single module or may include multiple sub-modules. Optionally, the plurality of sub-modules perform all or part of the steps required to be performed by the processing module, respectively. Alternatively, the processing module may be interchanged with the processor.

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

In some embodiments, the transceiver module 21 is configured to receive a discovery request message or a discovery notification message sent by a first terminal in a broadcast manner, where the discovery request message or the discovery notification message is used to indicate that a direct discovery process of the first service is performed, and the discovery request message or the discovery notification message includes a first parameter that is used to indicate a service type of the first service.

The transceiver module 21 is configured to perform at least one of the communication steps (e.g., S301A-S302A, S301B, but not limited thereto) such as transmission and/or reception performed by the second terminal 20 in any of the above methods, and will not be described herein. Optionally, the processing module 22 is configured to perform at least one of the other steps (e.g. S301A-S302A, S301B, but not limited thereto) performed by the second terminal 20 in any of the above methods, which is not described herein.

Fig. 8A is a schematic structural diagram of a communication device 8100 according to an embodiment of the present disclosure. The communication device 8100 may be a first terminal, a second terminal, a chip system, a processor, or the like that supports the network device to implement any of the above methods, or a chip, a chip system, a processor, or the like that supports the terminal to implement any of the above methods. The communication device 8100 may be used to implement the method described in the above method embodiments, and reference may be made in particular to the description of the above method embodiments.

As shown in fig. 8A, communication device 8100 includes one or more processors 8101. The processor 8101 may be a general-purpose processor or a special-purpose processor, etc., and may be, for example, a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processor may be used to control communication devices (e.g., base stations, baseband chips, terminal devices, terminal device chips, DUs or CUs, etc.), execute programs, and process data for the programs. Optionally, the communication device 8100 is configured to perform any of the above methods. Optionally, the one or more processors 8101 are configured to invoke instructions to cause the communication device 8100 to perform any of the above methods.

In some embodiments, communication device 8100 also includes one or more transceivers 8102. When the communication device 8100 includes one or more transceivers 8102, the transceivers 8102 perform at least one of the communication steps (e.g., but not limited to S301A-S302A, S301B) of the above-described method, and the transceiver 8102 performs at least one of the other steps (e.g., but not limited to S301A-S302A, S301B). In alternative embodiments, the transceiver may include a receiver and/or a transmitter, which may be separate or integrated. Alternatively, terms such as transceiver, transceiver unit, transceiver circuit, interface, etc. may be replaced with each other, terms such as transmitter, transmitter unit, transmitter circuit, etc. may be replaced with each other, and terms such as receiver, receiving unit, receiver, receiving circuit, etc. may be replaced with each other.

In some embodiments, communication device 8100 also includes one or more memories 8103 for storing data. Alternatively, all or part of memory 8103 may be external to communication device 8100. In alternative embodiments, communication device 8100 may include one or more interface circuits 8104. Optionally, an interface circuit 8104 is coupled to the memory 8102, the interface circuit 8104 being operable to receive data from the memory 8102 or other device, and being operable to transmit data to the memory 8102 or other device. For example, the interface circuit 8104 may read data stored in the memory 8102 and transmit the data to the processor 8101.

The communication device 8100 in the above embodiment description 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 a stand-alone device or may be part of a larger device. For example, the communication device may be: 1) A stand-alone integrated circuit IC, or chip, or a system-on-a-chip or subsystem; (2) A set of one or more ICs, optionally including storage means for storing data, programs; (3) an ASIC, such as a Modem (Modem); (4) modules that may be embedded within other devices; (5) A receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handset, a mobile unit, a vehicle-mounted device, a network device, a cloud device, an artificial intelligent device, and the like; (6) others, and so on.

Fig. 8B is a schematic structural diagram of a chip 8200 according to an embodiment of the disclosure. For the case where the communication device 8100 may be a chip or a chip system, reference may be made to a schematic structural diagram of the chip 8200 shown in fig. 8B, but is not limited thereto.

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

In some embodiments, the chip 8200 further comprises one or more interface circuits 8202. Alternatively, the terms interface circuit, interface, transceiver pin, etc. may be interchanged. In some embodiments, the chip 8200 further comprises one or more memories 8203 for storing data. Alternatively, all or part of the memory 8203 may be external to the chip 8200. Optionally, an interface circuit 8202 is coupled to the memory 8203, the interface circuit 8202 may be used to receive data from the memory 8203 or other device, and the interface circuit 8202 may be used to transmit data to the memory 8203 or other device. For example, the interface circuit 8202 may read 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 (e.g., but not limited to S301A-S302A, S301B) of the above-described methods of transmitting and/or receiving. The interface circuit 8202 performs the communication steps such as transmission and/or reception in the above-described method, for example, by: the interface circuit 8202 performs data interaction between the processor 8201, the chip 8200, the memory 8203, or the transceiver device. In some embodiments, processor 8201 performs at least one of the other steps (e.g., S301A-S302A, S301B, but is not limited thereto).

The present disclosure also proposes a storage medium having stored thereon instructions that, when executed on a communication device 8100, cause the communication device 8100 to perform any of the above methods. Optionally, the storage medium is an electronic storage medium. Alternatively, the storage medium described above is a computer-readable storage medium, but is not limited thereto, and it may be a storage medium readable by other devices. Alternatively, the above-described storage medium may be a non-transitory (non-transitory) storage medium, but is not limited thereto, and it may also be a transitory storage medium.

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

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

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

The foregoing is merely specific embodiments of the disclosure, but the protection scope of the disclosure is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the disclosure, and it is intended to cover the scope of the disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. An information indication method, wherein the method is performed by a first terminal, and comprises:

and sending a discovery request message or a discovery notification message to a second terminal in a broadcast manner, wherein the discovery request message or the discovery notification message is used for indicating a direct discovery process of a first service, and the discovery request message or the discovery notification message comprises a first parameter for indicating a service type of the first service.

2. The method of claim 1, wherein the method further comprises:

And receiving a discovery response message sent by the second terminal, wherein the discovery response message is used for responding to the discovery request message sent by the first terminal, and the discovery response message comprises the first parameter.

3. A method according to claim 1 or 2, wherein the first parameter is a new parameter indicating a traffic type.

4. A method according to claim 3, wherein the first parameter is at least one of:

the first parameter is a proximity service communication PC5 application identifier, and corresponds to one PC5 application;

the first parameter is a common prefix or a common sub-prefix of a plurality of PC5 application identifiers, and corresponds to a plurality of PC5 applications;

the first parameter is a value of the PC5 application type.

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

6. The method according to any of claims 1 to 5, wherein the first traffic is ranging side uplink, SL, positioning.

7. The method of claim 4, wherein the PC5 application is a ProSe application or a car networking V2X application.

8. The method of any of claims 1 to 7, wherein the direct discovery process comprises at least one of:

a terminal direct discovery process with ProSe function;

terminal discovery procedure with V2X functionality.

9. The method of any of claims 1 to 8, wherein the discovery request message comprises at least one of:

a direct discovery request message of the first service;

a group member discovery request message for the first service;

and the direct communication request message of the first service.

10. The method of any of claims 1 to 8, wherein the discovery notification message comprises at least one of:

a discovery notification message for the first service;

a discovery notification message for a group member of the first service.

11. The method of claim 2, wherein the discovery response message comprises at least one of:

a direct discovery response message of the first service;

a group member discovery response message for the first service;

and the direct communication response message of the first service.

12. An information indicating method, wherein the method is performed by a second terminal, and comprises:

And receiving a discovery request message or a discovery notification message sent by a first terminal in a broadcast manner, wherein the discovery request message or the discovery notification message is used for indicating a direct discovery process of a first service, and the discovery request message or the discovery notification message comprises a first parameter for indicating a service type of the first service.

13. The method of claim 12, wherein the method further comprises:

and sending a discovery response message to the first terminal, wherein the discovery response message is used for responding to the discovery request message sent by the first terminal, and the discovery response message comprises the first parameter.

14. A method according to claim 12 or 13, wherein the first parameter is a new parameter indicating a traffic type.

15. The method of claim 14, wherein the first parameter is at least one of:

the first parameter is a PC5 application identifier, and the first parameter corresponds to one PC5 application; or alternatively

The first parameter is a common prefix or a common sub-prefix of a plurality of PC5 application identifiers, and corresponds to a plurality of PC5 applications; or alternatively

The first parameter is a value of the PC5 application type.

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

17. The method according to any of claims 12 to 16, wherein the first service is ranging SL positioning.

18. The method of claim 15, wherein the PC5 application is a ProSe application or a V2X application.

19. The method of any one of claims 12 to 18, wherein the direct discovery process comprises at least one of:

a terminal direct discovery process with ProSe function;

terminal discovery procedure with V2X functionality.

20. The method of any of claims 12 to 19, wherein the discovery request message comprises at least one of:

a direct discovery request message of the first service;

and the group member of the first service discovers a request message.

21. The method of any of claims 12 to 19, wherein the discovery notification message comprises at least one of:

A discovery notification message for the first service;

a discovery notification message for a group member of the first service;

and the direct communication request message of the first service.

22. The method of claim 13, wherein the discovery response message comprises at least one of:

a direct discovery response message of the first service;

a group member discovery response message for the first service;

and the direct communication response message of the first service.

23. An information indicating method, comprising:

the method comprises the steps that a first terminal sends a discovery request message or a broadcast sending discovery notification message to a second terminal, wherein the discovery request message or the discovery notification message is used for indicating a direct discovery process of a first service, and the discovery request message or the discovery notification message comprises a first parameter for indicating a service type of the first service;

the second terminal receives a discovery request message sent by the first terminal or a discovery notification message sent by a broadcasting mode.

24. A first terminal, comprising:

and the transceiver module is used for 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 for indicating a direct discovery process of the first service, and the discovery request message or the discovery notification message comprises a first parameter for indicating the service type of the first service.

25. A second terminal, comprising:

the receiving and transmitting module is used for receiving a discovery request message sent by the first terminal or a discovery notification message sent by a broadcasting mode, wherein the discovery request message or the discovery notification message is used for indicating a direct discovery process of the first service, and the discovery request message or the discovery notification message comprises a first parameter for indicating the service type of the first service.

26. A first terminal, comprising:

one or more processors;

a memory coupled to the processor, the memory having instructions stored thereon that, when executed by the processor, cause the first terminal to perform the method of any of claims 1-11.

27. A second terminal, comprising:

one or more processors;

a memory coupled to the processor, the memory having instructions stored thereon that, when executed by the processor, cause the second terminal to perform the method of any of claims 12 to 22.

28. A communication system comprising a first terminal configured to implement the method of any of claims 1 to 11, a second terminal configured to implement the method of any of claims 12 to 22.

29. A storage medium storing instructions which, when executed on a communications device, cause the communications device to perform the method of any one of claims 1 to 11, 12 to 22.