WO2021012939A1

WO2021012939A1 - Method and device for sidelink

Info

Publication number: WO2021012939A1
Application number: PCT/CN2020/100477
Authority: WO
Inventors: 邓强
Original assignee: 大唐移动通信设备有限公司
Priority date: 2019-07-25
Filing date: 2020-07-06
Publication date: 2021-01-28
Also published as: CN112291742A; CN112291742B

Abstract

Disclosed are a method and device for a sidelink, which are used to solve the problem of wasting of radio resources being easily caused by an existing method for building a sidelink between terminals. According to the embodiments of the present application, a sending terminal and a receiving terminal build a sidelink connection according to respectively corresponding Internet of Vehicles layer identifiers; and if there is a new application layer service requirement during data transmission between the sending terminal and the receiving terminal, the sending terminal can use a built QoS flow that meets the new application layer service requirement to transmit a V2X message with the receiving terminal, thereby avoiding wasting of radio resources caused by repeatedly building QoS flows, having the same QoS parameters, between the sending terminal and the receiving terminal.

Description

Method and equipment for direct communication

Cross references to related applications

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on July 25, 2019, with an application number of 201910677518.1, and the application title is "a method and device for direct communication", the entire content of which is incorporated herein by reference Applying.

Technical field

This application relates to the field of communication technology, and in particular to a method and device for direct communication.

Background technique

The third generation of mobile communications standardization organization (3rd Generation Partnership Project, 3GPP) standard defines a way for two user equipment (User Equipment, UE) to directly communicate with vehicle wireless communication technology (vehicle to X, V2X), V2X The transmission of the message does not go through the network but through the PC5 interface between the UEs. When two UEs communicate in a unicast mode, a unicast link is established between the two UEs. As shown in Figure 1, UE A and UE B send and receive V2X messages through the PC5 interface, and the transmission of V2X messages does not go through the network.

In the prior art, the PC5 unicast link (link) is identified by the Layer-2 identification (ID) of two UEs, and multiple PC5 unicast links may be established between the two UEs. Different PC5 unicast links may contain the same quality of service (Quality of Service, QoS) flow (Flow), and these QoS flows will be mapped to different side-chain radio bearers (SideLink Radio Bearer, SLRB), resulting in radio resources Waste.

In summary, the existing method of establishing direct communication between terminals is likely to cause a waste of wireless resources.

Summary of the invention

The present application provides a method and device for direct connection communication, which are used to solve the problem of wireless resource waste caused by the way of establishing direct connection communication between existing terminals.

In the first aspect, a direct communication method provided by an embodiment of the present application includes:

The sending terminal sends a direct communication request message;

Receiving, by the sending terminal, a direct communication response message fed back by the receiving terminal;

Establishing a direct communication connection between the sending terminal and the receiving terminal;

Wherein, the direct connection communication request message includes the IoV layer identifier and/or target application layer identifier of the sending terminal; the direct connection communication response message includes the IoV layer identifier of the receiving terminal; wherein, the target The application layer identifier is the application layer identifier of the receiving terminal.

In the above method, the sending terminal and the receiving terminal establish a direct communication connection according to their own corresponding car networking layer identification. If there is a new application layer service requirement when the sending terminal and the receiving terminal perform data transmission, the sending terminal can use it to meet the new application The established QoS flow required by the layer service transmits V2X messages with the receiving terminal, which avoids the waste of wireless resources caused by repeatedly establishing a QoS flow with the same QoS parameters between the sending terminal and the receiving terminal.

In an optional implementation manner, the IoV layer identifier of the sending terminal corresponds to multiple application layer identifiers of the sending terminal; the IoV layer identifier of the receiving terminal corresponds to multiple application layers of the receiving terminal Logo.

In an optional implementation manner, the direct communication request message further includes some or all of the following:

The application layer identifier, the target application layer identifier, the direct communication flow identifier and the quality of service parameters corresponding to the direct communication flow of the sending terminal; wherein the target application layer identifier establishes a direct communication connection for the sending terminal The application layer identifier of the opposite end.

In an optional implementation manner, the direct communication response message further includes:

The application layer identifier of the receiving terminal.

In an optional implementation manner, the application layer identifier of the receiving terminal includes:

The target application layer identifier requested by the sending terminal; or

The target application layer identifier requested by the sending terminal and other application layer identifiers supported by the receiving terminal.

In an optional implementation manner, establishing a direct communication connection between the sending terminal and the receiving terminal further includes:

The sending terminal establishes a direct communication flow with the receiving terminal.

In an optional implementation manner, after the sending terminal establishes a direct communication connection with the receiving terminal, the method further includes:

The sending terminal determines that there is a new application layer service quality requirement;

The sending terminal sends an update request message;

Receiving, by the sending terminal, an update response message fed back by the receiving terminal;

Wherein, the update request message includes the application layer identifier of the sending terminal, the Internet of Vehicles layer identifier of the sending terminal, one application layer identifier among other application layer identifiers supported by the receiving terminal, and the vehicle of the receiving terminal. Networking layer identification and direct communication flow identification; the update response message includes the application layer identification of the receiving terminal, the vehicle networking layer identification of the receiving terminal, and the direct communication flow identification.

In an optional implementation manner, before the sending terminal sends the update request message, the method further includes:

The sending terminal determines the vehicle networking layer identifier of the receiving terminal corresponding to other application layer identifiers supported by the receiving terminal and the direct communication flow identifier corresponding to the new application layer service quality requirement.

In an optional implementation manner, the sending terminal determining the direct communication flow identifier corresponding to the update request message includes:

The sending terminal determines the direct communication flow identifier corresponding to the new application layer service quality requirement according to the new application layer service quality requirement and the service quality of the established direct communication flow.

In an optional implementation manner, the sending terminal determines the direct communication corresponding to the new application layer service quality requirement according to the new application layer service quality requirement and the service quality of the established direct communication flow Flow identification, including:

If the service quality of the established direct communication flow meets the application layer service quality requirements, the sending terminal determines that the established direct communication flow identifier that meets the application layer service quality requirements corresponds to the new application layer service quality requirements The direct connection communication flow identifier; otherwise, the sending terminal establishes a new direct communication flow identifier as the direct communication flow identifier corresponding to the new application layer service quality requirement.

The sending terminal broadcasts a new direct connection communication request message, the direct connection communication request message including the application layer identification of the sending terminal, the Internet of Vehicles layer identification of the sending terminal, the new target application layer identification, and the new direct connection The communication flow identifier and the quality of service parameter corresponding to the directly connected communication flow identifier.

In an optional implementation manner, if the target application layer identifier is an application layer identifier supported by the receiving terminal;

After the sending terminal broadcasts the new direct communication request message, the method further includes:

The sending terminal receives the direct communication response message sent by the receiving terminal; wherein the direct communication response message includes the vehicle networking layer identifier and the direct communication flow identifier of the receiving terminal.

In an optional implementation manner, after the sending terminal receives the direct communication response message sent by the receiving terminal, the method further includes:

The receiving terminal establishes a corresponding direct communication flow according to the direct communication flow identifier in the direct communication response message fed back by the sending terminal.

In an optional implementation manner, the establishment of the corresponding direct communication flow by the receiving terminal according to the direct communication flow identifier in the direct communication response message fed back by the sending terminal includes:

If the direct communication flow identifier fed back by the receiving terminal is an established direct communication flow identifier, the sending terminal reuses the direct communication flow corresponding to the established direct communication flow identifier;

If the direct communication stream identifier fed back by the receiving terminal is the new direct communication stream identifier included in the new direct communication request message sent by the sending terminal, the sending terminal establishes the new direct connection The communication flow identifier corresponds to the direct communication flow.

In the second aspect, a direct communication method provided by an embodiment of the present application includes:

The receiving terminal receives the fixed direct communication request message sent by the sending terminal;

Sending, by the receiving terminal, a direct communication response message to the sending terminal;

Establishing a direct communication connection between the receiving terminal and the sending terminal;

The application layer identifier of the receiving terminal.

The target application layer identifier requested by the sending terminal; or

In an optional implementation manner, the establishment of a direct communication connection between the receiving terminal and the sending terminal further includes:

The receiving terminal performs data transmission through a direct communication stream established with the sending terminal.

In an optional implementation manner, after the receiving terminal establishes a direct communication connection with the sending terminal, the method further includes:

Receiving, by the receiving terminal, an update request message sent by the sending terminal;

The receiving terminal feeds back an update response message to the sending terminal;

The receiving terminal receives the direct communication request message broadcast by the sending terminal; wherein the direct communication request message includes the application layer identifier of the sending terminal, the vehicle networking layer identifier of the sending terminal, and the new target application layer ID, the new direct communication flow ID and the quality of service parameters corresponding to the direct communication flow ID;

After the receiving terminal determines that the target application layer identifier is an application layer identifier supported by itself, it sends a direct communication response message to the sending terminal; wherein the direct communication response message includes the car networking layer of the receiving terminal Identification and direct communication flow identification.

In an optional implementation manner, before the receiving terminal sends a direct communication response message to the sending terminal, the method further includes:

The receiving terminal determines the direct communication flow identifier.

In an optional implementation manner, the determining of the direct connection communication flow identifier by the receiving terminal includes:

The receiving terminal determines the direct communication flow identifier according to the service quality parameter corresponding to the direct communication flow identifier in the direct communication request message broadcast by the sending terminal and the service quality of the established direct communication flow.

In an optional implementation manner, the receiving terminal determines the direct communication flow identifier according to the quality of service parameters in the direct communication request message broadcast by the sending terminal and the quality of service with the established direct communication flow, include:

If the service quality of the established direct communication flow meets the quality of service parameters in the direct communication request message broadcast by the sending terminal, the sending terminal reuses the established direct communication flow identifier; otherwise, the The sending terminal establishes a new direct communication flow identifier.

In a third aspect, an embodiment of the present application also provides a sending terminal for direct communication. The sending terminal includes a processor and a memory, wherein the memory stores program codes, and when one or more When the computer program is executed by the processor, the sending terminal is caused to execute the following process:

Send a direct communication request message;

Receive a direct communication response message fed back by the receiving terminal;

Establishing a direct communication connection with the receiving terminal;

In a possible implementation, the vehicle networking layer identifier of the sending terminal corresponds to multiple application layer identifiers of the sending terminal; the vehicle networking layer identifier of the receiving terminal corresponds to multiple application layer identifiers of the receiving terminal .

In a possible implementation, the direct communication request message further includes some or all of the following:

In a possible implementation manner, the direct communication response message further includes the application layer identifier of the receiving terminal.

In a possible implementation, the application layer identifier of the receiving terminal includes the target application layer identifier requested by the sending terminal; or the target application layer identifier requested by the sending terminal and the receiving terminal support Other application layer IDs.

In a possible implementation manner, the processor is further configured to:

Establish a direct communication flow with the receiving terminal.

In a possible implementation manner, the processor is further configured to:

Determine the new application layer service quality requirements;

Send update request message;

Receiving an update response message fed back by the receiving terminal;

In a possible implementation manner, the processor is further configured to:

Determine the vehicle networking layer identifier of the receiving terminal corresponding to other application layer identifiers supported by the receiving terminal and the direct communication flow identifier corresponding to the new application layer service quality requirement.

In a possible implementation manner, the processor is specifically configured to:

Determine the direct connection communication flow identifier corresponding to the new application layer service quality requirement according to the new application layer service quality requirement and the service quality of the established direct communication flow.

If the service quality of the established direct communication flow meets the application layer service quality requirements, then determine the established direct communication flow identifier that meets the application layer service quality requirements as the direct communication flow corresponding to the new application layer service quality requirements Flow identifier; otherwise, a new direct communication flow identifier is established as the direct communication flow identifier corresponding to the new application layer service quality requirement.

In a possible implementation manner, the processor is further configured to:

Determine the new application layer service quality requirements;

Broadcast a new direct communication request message; wherein, the direct communication request message includes the application layer identifier of the sending terminal, the vehicle networking layer identifier of the sending terminal, the new target application layer identifier, and the new direct communication flow Identifies the quality of service parameter corresponding to the direct communication flow identifier.

In a possible implementation manner, the processor is further configured to:

If the target application layer identifier is an application layer identifier supported by the receiving terminal, after broadcasting a new direct communication request message, receive a direct communication response message sent by the receiving terminal; wherein, the direct communication response message The vehicle networking layer identifier and the direct communication flow identifier of the receiving terminal are included.

After receiving the direct communication response message sent by the receiving terminal, if the direct communication flow identifier fed back by the receiving terminal is an established direct communication flow identifier, the direct connection corresponding to the established direct communication flow identifier is reused Communication flow

If the direct communication flow identifier fed back by the receiving terminal is the new direct communication flow identifier included in the new direct communication request message sent by the sending terminal, then the new direct communication flow identifier correspondence is established Direct communication flow.

In a fourth aspect, an embodiment of the present application also provides a receiving terminal for direct communication. The receiving terminal includes a processor and a memory, wherein the memory stores program codes, and when one or more When the computer program is executed by the processor, the receiving terminal executes the following process:

Receive a fixed direct communication request message sent by the sending terminal;

Sending a direct communication response message to the sending terminal;

Establishing a direct communication connection with the sending terminal;

In a possible implementation manner, the application layer identifier of the receiving terminal includes:

The target application layer identifier requested by the sending terminal; or

In a possible implementation manner, the processor is further configured to:

Data transmission is performed through a direct communication stream established with the sending terminal.

In a possible implementation manner, the processor is further configured to:

After establishing a direct communication connection with the sending terminal, receiving an update request message sent by the sending terminal;

Feedback an update response message to the sending terminal;

In a possible implementation manner, the processor is further configured to:

Feedback an update response message to the sending terminal;

In a possible implementation manner, the processor is further configured to:

Before sending the direct communication response message to the sending terminal, determine the direct communication flow identifier.

The direct communication flow identifier is determined according to the service quality parameter corresponding to the direct communication flow identifier in the direct communication request message broadcast by the sending terminal and the service quality of the established direct communication flow.

If the quality of service of the established direct communication flow meets the quality of service parameters in the direct communication request message broadcast by the sending terminal, the established direct communication flow identifier is reused; otherwise, a new direct communication is established Flow ID.

In a fifth aspect, an embodiment of the present application also provides a sending terminal for direct communication, and the sending terminal includes:

The first sending module: used to send a direct communication request message;

The first receiving module: used to receive the direct communication response message fed back by the receiving terminal;

The first processing module: used to establish a direct communication connection with the receiving terminal; wherein the direct communication request message includes the vehicle networking layer identifier of the sending terminal; the direct communication response message includes all The vehicle networking layer identification of the receiving terminal.

In a sixth aspect, an embodiment of the present application also provides a receiving terminal for direct communication, and the receiving terminal includes:

The second receiving module: used to receive the fixed direct communication request message sent by the sending terminal;

The second sending module: used to send a direct communication response message to the sending terminal;

The second processing module: used to establish a direct communication connection with the sending terminal;

In a seventh aspect, the present application also provides a computer storage medium on which a computer program is stored, and when the program is executed by a processor, the steps of the method described in the first aspect or the second aspect are implemented.

In addition, the technical effects brought about by any one of the implementations of the second aspect to the sixth aspect can be referred to the technical effects brought about by the different implementations of the first aspect or the second aspect, which will not be repeated here.

Description of the drawings

In order to more clearly explain the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings may be obtained from these drawings without creative labor.

FIG. 1 is a schematic diagram of communication between terminals through a PC5 interface according to an embodiment of the application;

Figure 2 is a schematic diagram of establishing a PC5 unicast link between terminals according to an embodiment of the application;

FIG. 3 is a schematic diagram of the mapping relationship of various protocol layers involved in establishing direct communication with a terminal according to an embodiment of the application;

4 is a schematic diagram of the structure of a direct communication system according to an embodiment of this application;

FIG. 5 is a schematic diagram of a related process operation for establishing direct communication provided by an embodiment of this application;

FIG. 6 is a schematic diagram of an established PC5 unicast link and QoS flow provided by an embodiment of this application;

FIG. 7 is a schematic diagram of a related process operation for establishing and updating QoS flow according to an embodiment of this application;

FIG. 8 is a schematic diagram of a comparison before and after establishing a new QoS flow according to an embodiment of the application;

FIG. 9 is a schematic diagram of related process operations for reusing an established QoS flow provided by an embodiment of the application;

FIG. 10 is a schematic diagram of before and after reusing an established QoS flow provided by an embodiment of the application;

FIG. 11 is a schematic diagram of another process operation related to establishing a new QoS flow provided by an embodiment of the application;

FIG. 12 is a schematic diagram of another related process operation of reusing an established QoS flow provided by an embodiment of the application;

FIG. 13 is a schematic structural diagram of a sending terminal provided by an embodiment of this application;

FIG. 14 is a schematic structural diagram of another sending terminal provided by an embodiment of this application;

FIG. 15 is a schematic structural diagram of a receiving terminal provided by an embodiment of this application;

FIG. 16 is a schematic structural diagram of another receiving terminal provided by an embodiment of this application;

FIG. 17 is a schematic flowchart of a method on the sending terminal side in a direct communication method provided by an embodiment of this application;

FIG. 18 is a schematic flowchart of a method on the receiving terminal side in a direct communication method provided by an embodiment of this application.

Detailed ways

In order to make the purpose, technical solutions and advantages of the application more clear, the application will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the application, rather than all the embodiments. . Based on the embodiments in this application, all other embodiments obtained by a person of ordinary skill in the art without creative work shall fall within the protection scope of this application.

The following explains some words that appear in the text:

1. The term "and/or" in the embodiments of the present application describes the association relationship of the associated objects, indicating that there can be three types of relationships, for example, A and/or B, which can mean that there is A alone, and both A and B exist. There are three cases of B. The character "/" generally indicates that the associated objects are in an "or" relationship.

2. The term "plurality" in the embodiments of this application refers to two or more than two, and other quantifiers are similar.

The application scenarios described in the embodiments of this application are intended to more clearly illustrate the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided by the embodiments of this application. Those of ordinary skill in the art will know that with the development of new application scenarios It appears that the technical solutions provided in the embodiments of the present application are equally applicable to similar technical problems. Wherein, in the description of the present application, unless otherwise specified, "multiple" means two or more.

At present, the terminal establishes corresponding application layer identifiers by different organizations of its own application layer, and initiates V2X communication with the peer device through the application layer identifier, that is, establishes a PC5 unicast link between the two terminals.

The current standard defines that the granularity of PC5 unicast link corresponds to a pair of application layer identifiers, that is, a PC5 unicast link can be established between an application layer identifier of the sending terminal and an application layer identifier of the receiving terminal. The PC5 unicast link is composed of the sending terminal and A pair of layer 2 IDs of the receiving terminal are identified, and an application layer ID of the terminal corresponds to a layer 2 ID. Therefore, if the layer 2 ID of the terminal is used to identify the PC5 unicast link, the PC5 unicast link corresponding to each pair of application layer IDs needs to be A pair of layer 2 IDs are identified, that is, a pair of application layer (Application Layer) IDs corresponds to a pair of Layer-2 IDs.

As shown in Figure 2, two PC5 unicast links are established between UEA and UEB, namely: PC5 unicast link1 and PC5 unicast link2. PC5 unicast link1 is used for the transmission of V2X messages between UEA's application layer ID 1 and UEB's application layer ID 2; PC5 unicast link2 is used for UEA's application layer ID 3 and UEB's application layer ID 4 for transmission of V2X messages .

PC5 unicast link1 contains QoS Flow#1, QoS Flow#2 and QoS Flow#3; PC5 unicast link2 contains QoS Flow#4 and QoS Flow#5; each QoS Flow is mapped to a different SLRB, if PC5 unicast link1 and PC5 The QoS Flow contained in unicast link2 has the same or associated QoS parameter, which will cause repeated mapping of QoS Flow. For example, QoS Flow#1 and QoS Flow#4 have exactly the same QoS parameter, that is, they have the same QoS guarantee. However, because QoS Flow#1 and QoS Flow#4 belong to different PC5 unicast links, two QoS Flows need to be established, and further need to be mapped to two different SLRBs, which causes a waste of wireless resources.

The embodiments of this application define a new UE identity, namely, the vehicle networking layer identity (V2X Layer ID), and the sending terminal and the receiving terminal establish PC5 unicast link and QoS Flow through the V2X Layer ID.

Among them, the IoV layer identifier of the terminal can be a preset public identifier or an identifier corresponding to the IP/Non-IP layer of the terminal. Each terminal has a unique IoV layer identifier, and multiple application layer identifiers of the terminal can be mapped To the same IoV layer identifier of the terminal, the IoV layer identifier of the terminal corresponds to the layer 2 identifier of the terminal one to one.

As shown in Figure 3, it is a schematic diagram of the application layer identification of UEA and UEB, the correspondence between the vehicle networking layer identification and the layer 2 identification, and the schematic diagram of the establishment of PC5 unicast link between UEA and UEB according to the vehicle networking layer identification, where the application layer identification of UEA includes Application Layer ID-1 and Application Layer ID-3, Application Layer ID-1 and Application Layer ID-3 correspond to UEA's vehicle networking layer identification UEA V2X Layer ID, and UEA's vehicle networking layer identification UEA V2X Layer ID corresponds to UEA's layer 2 Identifies UEA Layer-2 ID; UEB’s application layer ID includes Application Layer ID-2 and Application Layer ID-4. Application Layer ID-2 and Application Layer ID-4 correspond to UEB’s vehicle networking layer identity UEB V2X Layer ID, UEB’s The IoV layer identifier UEB V2X Layer ID corresponds to the layer 2 identifier UEB Layer-2 ID of UEB;

Therefore, the identification of the PC5 unicast link corresponding to the Application Layer ID-1 of UEA and the Application Layer ID-2 of UEB is UEA Layer-2 ID and UEB Layer-2 ID; UEA's Application Layer ID-3 and UEB's Application Layer ID The identification of the PC5 unicast link corresponding to -4 is also the UEA Layer-2 ID and the UEB Layer-2 ID. Therefore, there is no need to repeatedly establish the PC5 unicast link, and just update the QoS flow according to the new application layer QoS requirements.

Since the granularity of the PC5 unicast link has not changed, when the PC5 unicast link is established according to the terminal’s IoV layer identification, a unique PC5 unicast link will be established between the sending terminal and the receiving terminal, and the sending terminal and the receiving terminal have new QoS requirements At this time, the established QoS flow that meets the new QoS requirements can be used for transmission of V2X messages, that is, transmission on the same SLRB, which avoids the waste of wireless resources caused by repeatedly establishing QoS flows with the same QoS parameters between two terminals.

The embodiments of the present application will be described in further detail below in conjunction with the accompanying drawings of the specification.

As shown in FIG. 4, the embodiment of the present application provides a direct communication system including: a sending terminal 10 and a receiving terminal 20.

The sending terminal 10 is configured to send a direct communication request message; receive a direct communication response message fed back by a receiving terminal; establish a direct communication connection with the receiving terminal;

The receiving terminal 20 is configured to receive a fixed direct communication request message sent by the sending terminal; send a direct communication response message to the sending terminal; and establish a direct communication connection with the sending terminal.

Through the above solution, the sending terminal and the receiving terminal establish a direct communication connection according to their own corresponding car networking layer identification. If the sending terminal and the receiving terminal have new application layer service requirements during data transmission, the sending terminal can use the new The established QoSflow required by the application layer service transmits V2X messages to the receiving terminal, which avoids the waste of wireless resources caused by repeatedly establishing QoSflow with the same QoS parameters between the sending terminal and the receiving terminal.

The embodiments of this application mainly involve two aspects, including: the first aspect: the sending terminal and the receiving terminal establish a PC5 unicast link and QoS flow; the second aspect: the sending terminal updates the communication between the sending terminal and the receiving terminal according to the new application layer service quality requirements QoS flow: The following describes the above two aspects through specific embodiments:

Assuming that UE-1 is the sending terminal, the application layer ID of UE-1 includes Application Layer ID-1 and Application Layer ID-3, and the Internet of Vehicles layer (IP/Non-IP) ID of UE-1 is UE-1 V2X Layer ID, UE-1's application layer, IP/Non-IP, and Service Data Adaptation Protocol (SDAP) layers make up layer 2, UE-1's layer 2 identification is UE-1 Layer-2 ID; , Multiple application layer identifiers of UE-1 can be mapped to the same vehicle networking layer identifier, and the vehicle networking layer identifier of UE-1 corresponds to the layer 2 identifier one to one.

UE-2 is the receiving terminal. It is assumed that the application layer ID of UE-2 includes Application Layer ID-2 and Application Layer ID-4, and the Internet of Vehicles layer (IP/Non-IP) ID of UE-1 is UE-2 V2X Layer ID , UE-2’s application layer, IP/Non-IP and SDAP layers form layer 2, and the layer 2 identifier of UE-2 is UE-2 Layer-2 ID; among them, multiple application layer identifiers of UE-2 can be mapped to With the same IoV layer identifier, the IoV layer identifier of UE-2 corresponds to the layer 2 identifier one to one.

In the example of this application, the Application Layer ID-1 of UE-1 initiates a direct connection communication connection request for Application Layer ID-2. Since UE-1 is not sure about the terminal that supports Application Layer ID-2, UE-1 broadcasts the direct connection Communication request message: UE-2 receives the direct communication request message sent by UE-1, UE-2 determines that it supports Application Layer ID-2, UE-2 feeds back the direct communication response message to UE-1, and UE-1 communicates with UE-2 establishes PC5 unicast link and QoS flow;

Based on the other application layer identifiers supported by the direct communication itself fed back by UE-2, correspondingly, the sending terminal and the receiving terminal establish PC5 unicast link, QoS flow, and update QoS flow in different ways.

If UE-2 puts other application layer identifiers supported by itself in the direct communication response message, when UE-1’s Application Layer ID-3 initiates direct communication with other application layers of UE-2, it does not need to be reconnected. Establish a PC5 unicast link with UE-2, and send a request to update QoS flow directly to UE-2; if UE-2 does not put other application layer identifiers supported by itself in the direct communication response message, the Application of UE-1 When Layer ID-3 initiates direct communication to other application layers, since UE-1 cannot determine the peer device, UE-1 needs to broadcast a new direct communication connection request.

In the following specific embodiments 1 to 3, when the receiving terminal feeds back to the sending terminal other application layer identifiers that it supports, the sending terminal and the receiving terminal establish a PC5 unicast link and QoS flow and update the QoS flow interactive process. Introduction:

Embodiment 1: PC5 unicast link and QoS flow are established between UE-1 and UE-2;

The Application Layer ID-1 of UE-1 initiates a direct communication connection to Application Layer ID-2. As shown in Figure 5, the PC5 unicast link and QoS flow#1 are established between UE-1 and UE-2 provided in this application example. Schematic diagram of the interactive process, mainly including the following steps:

Step 500: UE-1 broadcasts a direct communication request message (Direct Communication Request);

Wherein, the direct communication request message includes the vehicle networking layer identification (UE-1 V2X Layer ID) of UE-1 and the target application layer identification Application Layer ID-2.

The direct communication request information also includes part or all of the following information: service type, Application Layer ID-1, UE-1 Layer-2 ID, and QoS Flow Identifier (QFI)#1 The PC5 QoS parameter corresponding to QFI#1, where the target application layer identifier is the application layer identifier of the opposite end to which the sending terminal establishes a direct communication connection.

After UE-2, UE-3, and UE-4 receive the direct connection communication request message sent by UE-1, they determine whether they support the target application layer identifier in the direct connection communication request message.

Step 501: UE-2 feeds back a direct communication response message (Direct Communication Accept) to UE-1;

Wherein, the direct communication response message includes the vehicle networking layer ID of UE-2 (UE-2V2X Layer ID), and the direct communication response message may also include some or all of the following information: Application Layer ID-1, UE- 1 V2X Layer ID, UE-1 Layer-2 ID, Application Layer ID-2, UE-2 Layer-2 ID, and PC5 QoS parameter and Application Layer ID-4 corresponding to QFI#1 and QFI#1. Among them, Application Layer ID-4 is the ID of other application layers supported by UE-2 fed back to UE-1.

Step 502: UE-1 and UE-2 establish PC5 unicast link and QoS Flow#1 to transmit V2X messages;

As shown in Figure 6, this is a schematic diagram of the PC5 unicast link and QoS Flow#1 established between UE-1 and UE-2 provided by the embodiments of this application, the Application Layer ID-1 of UE-1 and the Application Layer of UE-2 V2X messages are transmitted between ID-2 through QoS Flow#1.

Among them, PC5 unicast link is identified by the Layer-2 ID of UE-1 and UE-2, and QoS flow#1 is identified by QFI#1.

Based on Example 1, PC5 unicast link and QoS flow#1 are established between UE-1 and UE-2. On this basis, when UE-1 has a new application layer QoS requirement, for example, the Application Layer ID-3 of UE-1 initiates direct communication to Application Layer ID-4, as in step 503 in the above implementation 1, because UE-2 has reported to UE-1 that it supports Application Layer ID-4, and UE-1 Layer-2 ID and UE-2 Layer-2 ID identified PC5 unicast have been established between UE-1 and UE-2 link, therefore, UE-1 only needs to update the QoS flow with UE-2 according to the new application layer QoS requirements.

Among them, when UE-1 updates the QoS flow between UE-2 and UE-2 according to the new application layer QoS requirements, there are two possible situations. The first possible situation is the PC5 unicast between UE-1 and UE-2. There is no QoS flow that meets the new application layer QoS requirements on the link. UE-1 creates a new QoS flow that meets the new application layer QoS requirements; another possible situation is the PC5 unicast link between UE-1 and UE-2 Contains QoS flow that meets the new application layer QoS requirements, such as the established QoS flow#1, UE-1 reuses QoS flow#1 to transmit UE-1’s Application Layer ID-3 and UE-2’s Application Layer ID- 4 direct communication between.

The following describes the update method corresponding to the first possible situation through Embodiment 2.

Embodiment 2: A new QoS flow is established between UE-1 and UE-2;

The Application Layer ID-3 of UE-1 initiates direct communication with the Application Layer ID-4 of UE-2. UE-1 determines the QoS update this time according to the new application layer service quality requirements and the established QoS flow service quality Direct communication flow identifier corresponding to flow.

Assuming that UE-1 determines that the service quality of the established direct communication flow QoS flow#1 does not meet the new application layer service direct connection requirements, UE-1 establishes a new direct communication flow identification QFI#2.

As shown in FIG. 7, the interaction flow diagram for establishing a new QoS flow between UE-1 and UE-2 provided by this embodiment of the application mainly includes the following steps:

Step 700: UE-1 sends an update request message (Link Update Request) to UE-2;

Wherein, the update request message includes but is not limited to some or all of the following information:

Application Layer ID-3, Application Layer ID-4, UE-1 V2X Layer ID, UE-2 V2X Layer ID, UE-1 Layer-2 ID, UE-2 Layer-2 ID, QFI#2 and QFI#2 corresponding QoS parameter of PC5.

Step 701: UE-2 feeds back an update response message (Link Update Response) to UE-1;

Wherein, the update response message includes but is not limited to part or all of the following information:

As shown in Figure 8, for the before and after comparison of establishing QoS Flow#2, UE-1 and UE-2 have established PC5 QoS Flow#2 for the transmission of V2X messages between Application Layer ID-3 and Application Layer ID-4 .

It should be noted that FIG. 8 does not indicate that there are two PC5 unicast links between UE-1 and UE-2 at the same time, but indicates the comparison diagram before and after establishing QoS Flow#2 between UE-1 and UE-2.

The following describes the update manner corresponding to the second possible situation through Embodiment 3.

Embodiment 3: Reuse the established QoS Flow;

Assuming that UE-1 determines that the service quality of the established QoS flow#1 meets the direct connection requirements of the new application layer service, UE-1 reuses the established direct communication flow identification QFI#1 and uses the QoS identified by QFI#1 Flow#1 performs V2X message transmission between Application Layer ID-3 and Application Layer ID-4.

As shown in Figure 9, it is a schematic diagram of the interaction process of QoS flow#1 between UE-1 reuse and UE-2, which mainly includes the following steps:

Step 900: UE-1 sends an update request message (Link Update Request) to UE-2;

Application Layer ID-3, Application Layer ID-4, UE-1 V2X Layer ID, UE-2 V2X Layer ID, UE-1 Layer-2 ID, UE-2 Layer-2 ID, QFI#1.

Step 901: UE-2 feeds back an update response message (Link Update Response) to UE-1;

As shown in Figure 10, it is a schematic diagram of before and after reusing QoS Flow#1. UE-1 and UE-2 use QoS Flow#1 to transmit V2X messages between Application Layer ID-3 and Application Layer ID-4.

It should be noted that FIG. 10 does not indicate that there are two PC5 unicast links between UE-1 and UE-2 at the same time, but indicates that UE-1 and UE-2 reuse QoS Flow#1 before and after the comparison.

In the foregoing embodiment 1 to embodiment 3, UE-2 feeds back to UE-1 the interaction mode between UE-1 and UE-2 corresponding to other application layer identifiers that it supports. The following is a comparison of embodiments 4 to 6 UE-2 does not feed back to UE-1 the interaction process of establishing PC5 unicast link and QoS flow and updating QoS flow between UE-1 and UE-2 corresponding to other application layer identifiers that it supports:

Embodiment 4: PC5 unicast link and QoS flow are established between UE-1 and UE-2;

For the steps of establishing PC5 unicast link and QoS flow between UE-1 and UE-2, please refer to the specific steps in Example 1. The difference is that the direct communication response message that UE-2 feeds back to UE-1 does not include the support of UE-2. Other application layer IDs, which do not include Application Layer ID-4.

After the establishment of PC5 unicast link and PC5 QoS Flow#1 between UE-1 and UE-2, when UE-1 has a new application layer service quality requirement, for example: UE-1’s Application Layer ID-3 initiates a pair Application Layer ID-4 direct communication request message, because UE-2 does not feed back other application layer IDs supported by UE-1, UE-1 cannot determine the receiving terminal corresponding to Application Layer ID-4, and UE-1 needs Send the direct communication request message in broadcast mode.

It should be noted that before broadcasting the new direct communication request message, UE-1 establishes a new direct communication flow identifier according to the new application layer service quality requirements, and places the newly-created direct communication flow identifier in the direct connection Broadcast in the communication request message.

After UE-2 receives the new direct communication request message broadcast by UE-1, it determines that a PC5 unicast link has been established between UE-2 and UE-1, and UE-2 determines that it supports the application layer requested by UE-1 ID, UE-2 determines the direct communication flow identifier according to the QoS parameter included in the new direct communication request message and the service quality of the established direct communication flow identifier.

Among them, UE-2 determines the direct communication flow identifier according to the QoS parameter contained in the new direct communication request message and the service quality of the established direct communication flow identifier. There are two possible situations. The first possible situation is UE-2 determines that the PC5 unicast link with UE-1 does not meet the QoS parameter contained in the new direct communication request message, and UE-2 feeds back the direct communication flow identifier contained in the direct communication request message to UE-1; Another possible situation is that UE-2 determines that the PC5 unicast link with UE-1 contains the QoS flow corresponding to the QoS parameter contained in the new direct communication request message, such as the established QoS flow#1, then UE-2 reuses QoS flow#1, and feeds back the identifier QF#1 of QoS flow#1 to UE-1;

The following describes the update method corresponding to the first possible situation in Embodiment 5.

Embodiment 5: establishing a new QoS flow between UE-1 and UE-2;

Before UE-1's Application Layer ID-3 initiates direct communication with Application Layer ID-4, UE-1 establishes a new direct communication flow identifier according to the new application layer service quality requirements. Among them, Application Layer ID-4 is the application layer identifier of the opposite end of the new direct communication connection to be established by UE-1. As shown in Figure 11, UE-1 establishes a new QoS flow with the peer according to the new application layer service quality requirements, which mainly includes the following steps:

Step 1100: UE-1 broadcasts a new direct communication connection request message;

The direct communication request message includes the UE-1 V2X Layer ID of UE-1 and the target application layer ID Application Layer ID-4, and the direct communication request message also includes but is not limited to some or all of the following information: service type, Application Layer ID-3, UE-1 Layer-2 ID and QFI#2 and PC5 QoS Flow Index (PC5 QoS Flow Identifier, PFI)#2 corresponding to PC5 QoS parameter.

Step 1101: UE-2, UE-3, and UE-4 receive the direct communication request message broadcast by UE-1;

After UE-2 receives the new direct communication request message broadcast by UE-1, it determines that it supports Application Layer ID-4, and UE-2 determines that it has established a PC5 unicast link with UE-1, so there is no need to create a new PC5 unicast link.

UE-2 determines whether the established QoS flow can be reused according to the new application layer QoS requirements (PC5 QoS parameter corresponding to PFI#2) and the established QoS flow included in the direct communication request message.

If the established QoS flow meets the PC5 QoS parameter corresponding to PFI#2, the established QoS flow is reused, otherwise, it is determined to establish the QoS flow identified by QFI#2 with UE-1.

Assuming that UE-2 determines that the service quality of the established direct communication flow QoS flow#1 does not meet the direct connection requirements of the new application layer service, UE-2 places QFI#2 in the direct communication response message and feeds it back to UE- 1.

Step 1102: UE-2 feeds back a direct communication response message to UE-1;

Wherein, the direct communication response message includes UE-2V2X Layer ID of UE-2, and the direct communication response information also includes but is not limited to some or all of the following information: Application Layer ID-3, Application Layer ID-4, UE-1 V2X Layer ID, UE-2 V2X Layer ID, UE-1 Layer-2 ID, UE-2 Layer-2 ID, QFI#2.

UE-1 establishes QoS Flow#2 for the transmission of V2X messages between Application Layer ID-3 and UE-2 Application Layer ID-4.

It should be noted that FIG. 11 does not show that there are two PC5 unicast links between UE-1 and UE-2 at the same time, but shows a schematic diagram of before and after establishing QoS Flow#2 between UE-1 and UE-2.

The following will introduce and explain the interaction process of UE-1 and UE-2 reusing the established direct communication flow through Embodiment 6.

Embodiment 6: reuse the established direct communication flow;

Before UE-1's Application Layer ID-3 initiates direct communication with Application Layer ID-4, UE-1 establishes a new direct communication flow identifier according to the new application layer service quality requirements. Among them, Application Layer ID-4 is the application layer identifier of the opposite end of the new direct communication connection to be established by UE-1. As shown in Figure 12, UE-1 is based on the new application layer quality of service requirements and reuse of the established QoS flow interaction flow diagram, which mainly includes the following steps:

Step 1200: UE-1 broadcasts a new direct communication connection request message;

The direct communication request message includes the UE-1 V2X Layer ID of UE-1 and the target application layer ID Application Layer ID-4, and the direct communication request message also includes but is not limited to some or all of the following information: service Type, Application Layer ID-3, UE-1 Layer-2 ID, and PC5 QoS parameter corresponding to QFI#2 and PFI#2.

Step 1201: UE-2, UE-3 and UE-4 receive the direct communication request message broadcast by UE-1;

Assuming that UE-2 determines that the service quality of the established direct communication flow QoS flow#1 meets the new application layer service direct connection requirements, UE-2 places QFI#1 in the direct communication response message and feeds it back to UE-1 .

Step 1202: UE-2 feeds back a direct communication response message to UE-1;

Wherein, the direct communication response message includes UE-2V2X Layer ID of UE-2, and the direct communication response information also includes but is not limited to some or all of the following information: Application Layer ID-3, Application Layer ID-4, UE-1 V2X Layer ID, UE-2 V2X Layer ID, UE-1 Layer-2 ID, UE-2 Layer-2 ID, QFI#1.

UE-1 reuses QoS Flow#1 for the transmission of V2X messages between Application Layer ID-3 and UE-2 Application Layer ID-4.

It should be noted that Fig. 12 does not mean that there are two PC5 unicast links between UE-1 and UE-2 at the same time, but a schematic diagram of the before and after reusing QoS Flow#1 between UE-1 and UE-2.

Based on the same inventive concept, the embodiment of the application also provides a sending terminal for direct communication. Because the device is the sending terminal in the system of the embodiment of the application for direct communication, and the principle of the receiving terminal to solve the problem is similar to the method. Therefore, the implementation of the receiving terminal can refer to the implementation of the method, and the repetition will not be repeated.

As shown in FIG. 13, the first direct communication sending terminal in the embodiment of the present application includes a processor 1300, a memory 1301, and a transceiver 1302;

The processor 1300 is responsible for managing the bus architecture and general processing, and the memory 1301 may store data used by the processor 1300 when performing operations. The transceiver 1302 is used to receive and send data under the control of the processor 1300.

The bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 1300 and various circuits of the memory represented by the memory 1301 are linked together. The bus architecture can also link various other circuits such as peripherals, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, no further descriptions are provided herein. The bus interface provides the interface. The processor 1300 is responsible for managing the bus architecture and general processing, and the memory 1301 may store data used by the processor 1300 when performing operations.

The process disclosed in the embodiment of the present application may be applied to the processor 1300 or implemented by the processor 1300. In the implementation process, each step of the signal processing flow can be completed by an integrated logic circuit of hardware in the processor 1300 or instructions in the form of software. The processor 1300 may be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, and can implement or execute the embodiments of the present application The disclosed methods, steps and logic block diagrams. The general-purpose processor may be a microprocessor or any conventional processor. The steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor. The software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers. The storage medium is located in the memory 1301, and the processor 1300 reads the information in the memory 1301 and completes the steps of the signal processing flow in combination with its hardware.

Specifically, the processor 1300 is configured to read a program in the memory 1301 and execute:

Send a direct communication request message;

Establishing a direct communication connection with the receiving terminal;

Optionally, the IoV layer identifier of the sending terminal corresponds to multiple application layer identifiers of the sending terminal; the IoV layer identifier of the receiving terminal corresponds to multiple application layer identifiers of the receiving terminal.

Optionally, the direct communication request message further includes some or all of the following:

Optionally, the direct communication response message further includes the application layer identifier of the receiving terminal.

Optionally, the application layer identifier of the receiving terminal includes the target application layer identifier requested by the sending terminal; or the target application layer identifier requested by the sending terminal and other application layer identifiers supported by the receiving terminal .

Optionally, the processor 1300 is further configured to:

Establish a direct communication flow with the receiving terminal.

Optionally, the processor 1300 is further configured to:

Determine the new application layer service quality requirements;

Send update request message;

Receiving an update response message fed back by the receiving terminal;

Optionally, the processor 1300 is further configured to:

Optionally, the processor 1300 is specifically configured to:

Optionally, the processor 1300 is further configured to:

Determine the new application layer service quality requirements;

Optionally, the processor 1300 is further configured to:

Optionally, the processor 1300 is specifically configured to:

Based on the same idea, as shown in FIG. 14, an embodiment of the present application provides a schematic structural diagram of another sending terminal for direct communication. The sending terminal includes: a first sending module 1400, a first receiving module 1401, and a first processing module 1402 :

The first sending module 1400: used to send a direct communication request message;

The first receiving module 1401: used to receive the direct communication response message fed back by the receiving terminal;

The first processing module 1402: establishing a direct communication connection with the receiving terminal;

Optionally, the first processing module 1402 is further configured to:

Establish a direct communication flow with the receiving terminal.

Optionally, the first processing module 1402 is further configured to:

Determine the new application layer service quality requirements;

Send update request message;

Receiving an update response message fed back by the receiving terminal;

Optionally, the first processing module 1402 is further configured to:

Optionally, the first processing module 1402 is specifically configured to:

Optionally, the first processing module 1402 is further configured to:

Determine the new application layer service quality requirements;

Optionally, the first processing module 1402 is further configured to:

Optionally, the first processing module 1402 is specifically configured to:

Based on the same inventive concept, the embodiment of the application also provides a receiving terminal for direct communication. Because the device is the receiving terminal in the system of the embodiment of the application for direct communication, and the principle of the receiving terminal to solve the problem is similar to the method. Therefore, the implementation of the receiving terminal can refer to the implementation of the method, and the repetition will not be repeated.

As shown in FIG. 15, the first direct communication receiving terminal in the embodiment of the present application includes a processor 1500, a memory 1501, and a transceiver 1502;

The processor 1500 is responsible for managing the bus architecture and general processing, and the memory 1501 can store data used by the processor 1500 when performing operations. The transceiver 1502 is used to receive and transmit data under the control of the processor 1500.

The bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 1500 and various circuits of the memory represented by the memory 1501 are linked together. The bus architecture can also link various other circuits such as peripherals, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, no further descriptions are provided herein. The bus interface provides the interface. The processor 1500 is responsible for managing the bus architecture and general processing, and the memory 1501 can store data used by the processor 1500 when performing operations.

The process disclosed in the embodiment of the present application may be applied to the processor 1500 or implemented by the processor 1500. In the implementation process, each step of the signal processing flow can be completed by an integrated logic circuit of hardware in the processor 1500 or instructions in the form of software. The processor 1500 may be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, and can implement or execute the embodiments of the present application The disclosed methods, steps and logic block diagrams. The general-purpose processor may be a microprocessor or any conventional processor. The steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed by a hardware processor, or executed by a combination of hardware and software modules in the processor. The software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers. The storage medium is located in the memory 1501, and the processor 1500 reads the information in the memory 1501, and completes the steps of the signal processing flow in combination with its hardware.

Specifically, the processor 1500 is configured to read a program in the memory 1501 and execute:

Sending a direct communication response message to the sending terminal;

Establishing a direct communication connection with the sending terminal;

Optionally, the application layer identifier of the receiving terminal includes:

The target application layer identifier requested by the sending terminal; or

Optionally, the processor 1500 is further configured to:

Feedback an update response message to the sending terminal;

Optionally, the processor 1500 is further configured to:

After the direct communication connection with the sending terminal is established, the direct communication request message broadcast by the sending terminal is received; wherein the direct communication request message includes the application layer identifier of the sending terminal, and the sending terminal Terminal car networking layer identification, new target application layer identification, new direct communication flow identification and service quality parameters corresponding to the direct communication flow identification;

After determining that the target application layer identifier is an application layer identifier supported by itself, send a direct communication response message to the sending terminal; wherein, the direct communication response message includes the IoV layer identifier and the direct connection of the receiving terminal Communication flow ID.

Optionally, the processor 1500 is further configured to:

Optionally, the processor 1500 is specifically configured to:

Based on the same idea, as shown in FIG. 16, an embodiment of the present application provides a schematic structural diagram of another receiving terminal for direct communication. The sending terminal includes: a second sending module 1600, a second receiving module 1601, and a second processing module 1602 :

The second sending module 1600: used to receive the fixed direct communication request message sent by the sending terminal;

The second receiving module 1601: used to send a direct communication response message to the sending terminal;

The second processing module 1602: used to establish a direct communication connection with the sending terminal;

The target application layer identifier requested by the sending terminal; or

Optionally, the second processing module 1602 is further configured to:

Feedback an update response message to the sending terminal;

Optionally, the second processing module 1602 is further configured to:

Optionally, the second processing module 1602 is specifically configured to:

Based on the same inventive concept, the embodiment of this application also provides a method of direct communication, because this method corresponds to the method corresponding to the sending terminal directly communicating in the embodiment of this application, and the principle of the method to solve the problem is the same as that of the sending terminal. Similar, so the implementation of this method can refer to the implementation of the sending terminal, and the repetition will not be repeated.

As shown in FIG. 17, a flow chart of a direct communication method provided by an embodiment of this application specifically includes the following steps:

Step 1700: The sending terminal sends a direct communication request message;

Step 1701: The sending terminal receives the direct communication response message fed back by the receiving terminal;

Step 1702: The sending terminal establishes a direct communication connection with the receiving terminal;

Optionally, the direct communication response message further includes:

The application layer identifier of the receiving terminal.

The target application layer identifier requested by the sending terminal; or

Optionally, establishing a direct communication connection between the sending terminal and the receiving terminal further includes:

Optionally, after the sending terminal establishes a direct communication connection with the receiving terminal, the method further includes:

The sending terminal sends an update request message;

Optionally, before the sending terminal sends the update request message, the method further includes:

Optionally, the sending terminal determining the direct communication flow identifier corresponding to the update request message includes:

Optionally, the sending terminal determines the direct communication flow identifier corresponding to the new application layer service quality requirement according to the new application layer service quality requirement and the service quality of the established direct communication flow, including:

Optionally, if the target application layer identifier is an application layer identifier supported by the receiving terminal;

Optionally, after the sending terminal receives the direct communication response message sent by the receiving terminal, the method further includes:

Based on the same inventive concept, the embodiment of this application also provides a method of direct communication, because this method corresponds to the method corresponding to the receiving terminal directly communicating in the embodiment of this application, and the principle of the method to solve the problem is the same as that of the receiving terminal. Similar, so the implementation of this method can refer to the implementation of the receiving terminal, and the repetition will not be repeated.

As shown in FIG. 18, a flow chart of a method for direct communication provided by an embodiment of this application specifically includes the following steps:

Step 1800: The receiving terminal receives the fixed direct communication request message sent by the sending terminal;

Step 1801: The receiving terminal sends a direct communication response message to the sending terminal;

Step 1802, the receiving terminal establishes a direct communication connection with the sending terminal; wherein the direct communication request message includes the IoV layer identification of the sending terminal; the direct communication response message includes all The vehicle networking layer identification of the receiving terminal.

Optionally, the direct communication response message further includes:

The application layer identifier of the receiving terminal.

The target application layer identifier requested by the sending terminal; or

Optionally, establishing a direct communication connection between the receiving terminal and the sending terminal further includes:

Optionally, after the receiving terminal establishes a direct communication connection with the sending terminal, the method further includes:

Optionally, before the receiving terminal sends the direct communication response message to the sending terminal, the method further includes:

The receiving terminal determines the direct communication flow identifier.

Optionally, the determination of the direct connection communication flow identifier by the receiving terminal includes:

The receiving terminal determines the direct communication flow identifier according to the service quality parameters corresponding to the direct communication flow identifier in the direct communication request message broadcast by the sending terminal and the service quality of the established direct communication flow.

Optionally, the receiving terminal determines the direct communication flow identifier according to the service quality parameter in the direct communication request message broadcast by the sending terminal and the service quality of the established direct communication flow, including:

An embodiment of the present application further provides a computer-readable non-volatile storage medium, including program code, when the program code runs on a computing terminal, the program code is used to make the computing terminal execute the implementation of the present application. Example of the steps of the direct communication method.

The foregoing describes the present application with reference to block diagrams and/or flowcharts showing methods, devices (systems) and/or computer program products according to embodiments of the present application. It should be understood that one block of the block diagram and/or flowchart diagram and a combination of the blocks in the block diagram and/or flowchart diagram can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, and/or other programmable data processing devices to produce a machine, so that the instructions executed via the computer processor and/or other programmable data processing devices are created for A method of implementing the functions/actions specified in the block diagram and/or flowchart block.

Correspondingly, hardware and/or software (including firmware, resident software, microcode, etc.) can also be used to implement this application. Furthermore, this application may take the form of a computer program product on a computer-usable or computer-readable storage medium, which has a computer-usable or computer-readable program code implemented in the medium to be used by the instruction execution system or Used in conjunction with the instruction execution system. In the context of this application, a computer-usable or computer-readable medium can be any medium that can contain, store, communicate, transmit, or transmit a program for use by an instruction execution system, device, or device, or in combination with an instruction execution system, Device or equipment use.

Obviously, those skilled in the art can make various changes and modifications to the application without departing from the spirit and scope of the application. In this way, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, then this application is also intended to include these modifications and variations.

Claims

A method of direct communication, characterized in that the method includes:

The sending terminal sends a direct communication request message;

Receiving, by the sending terminal, a direct communication response message fed back by the receiving terminal;

Establishing a direct communication connection between the sending terminal and the receiving terminal;

Wherein, the direct connection communication request message includes the IoV layer identifier and/or target application layer identifier of the sending terminal; the direct connection communication response message includes the IoV layer identifier of the receiving terminal; wherein, the target The application layer identifier is the application layer identifier of the receiving terminal.
The method of claim 1, wherein the vehicle networking layer identifier of the transmitting terminal corresponds to multiple application layer identifiers of the transmitting terminal; the vehicle networking layer identifier of the receiving terminal corresponds to multiple application layer identifiers of the receiving terminal. Application layer identification.
The method according to claim 1, wherein the direct communication request message further includes some or all of the following:

The application layer identifier, the direct communication flow identifier of the sending terminal, and the quality of service parameters corresponding to the direct communication flow.
The method according to claim 1, wherein the direct communication response message further comprises:

The application layer identifier of the receiving terminal.
The method according to claim 4, wherein the application layer identifier of the receiving terminal comprises:

The target application layer identifier requested by the sending terminal; or

The target application layer identifier requested by the sending terminal and other application layer identifiers supported by the receiving terminal.
The method according to claim 1, wherein the establishing a direct communication connection between the sending terminal and the receiving terminal further comprises:

The sending terminal establishes a direct communication flow with the receiving terminal.
The method according to claim 1, wherein after the sending terminal establishes a direct communication connection with the receiving terminal, the method further comprises:

The sending terminal determines that there is a new application layer service quality requirement;

The sending terminal sends an update request message;

Receiving, by the sending terminal, an update response message fed back by the receiving terminal;

Wherein, the update request message includes the application layer identifier of the sending terminal, the Internet of Vehicles layer identifier of the sending terminal, one application layer identifier among other application layer identifiers supported by the receiving terminal, and the vehicle of the receiving terminal. Networking layer identification and direct communication flow identification; the update response message includes the application layer identification of the receiving terminal, the vehicle networking layer identification of the receiving terminal, and the direct communication flow identification.
The method according to claim 7, wherein before the sending terminal sends the update request message, the method further comprises:

The sending terminal determines the vehicle networking layer identifier of the receiving terminal corresponding to other application layer identifiers supported by the receiving terminal and the direct communication flow identifier corresponding to the new application layer service quality requirement.
The method according to claim 8, wherein the sending terminal determining the direct communication flow identifier corresponding to the update request message comprises:

The sending terminal determines the direct communication flow identifier corresponding to the new application layer service quality requirement according to the new application layer service quality requirement and the service quality of the established direct communication flow.
The method according to claim 9, wherein the sending terminal determines the corresponding to the new application layer service quality requirement according to the new application layer service quality requirement and the service quality of the established direct communication flow. Direct communication flow identification, including:

If the service quality of the established direct communication flow meets the application layer service quality requirements, the sending terminal determines that the established direct communication flow identifier that meets the application layer service quality requirements corresponds to the new application layer service quality requirements The direct connection communication flow identifier; otherwise, the sending terminal establishes a new direct communication flow identifier as the direct communication flow identifier corresponding to the new application layer service quality requirement.
The method according to claim 1, wherein after the sending terminal establishes a direct communication connection with the receiving terminal, the method further comprises:

The sending terminal determines that there is a new application layer service quality requirement;

The sending terminal broadcasts a new direct connection communication request message, the direct connection communication request message including the application layer identification of the sending terminal, the Internet of Vehicles layer identification of the sending terminal, the new target application layer identification, and the new direct connection The communication flow identifier and the quality of service parameter corresponding to the directly connected communication flow identifier.
The method of claim 11, wherein if the target application layer identifier is an application layer identifier supported by the receiving terminal;

After the sending terminal broadcasts the new direct communication request message, the method further includes:

The sending terminal receives the direct communication response message sent by the receiving terminal; wherein the direct communication response message includes the vehicle networking layer identifier and the direct communication flow identifier of the receiving terminal.
The method according to claim 11, wherein after the sending terminal receives the direct communication response message sent by the receiving terminal, the method further comprises:

If the direct communication flow identifier fed back by the receiving terminal is an established direct communication flow identifier, the sending terminal reuses the direct communication flow corresponding to the established direct communication flow identifier;

If the direct communication stream identifier fed back by the receiving terminal is the new direct communication stream identifier included in the new direct communication request message sent by the sending terminal, the sending terminal establishes the new direct connection The communication flow identifier corresponds to the direct communication flow.
A method of direct communication, characterized in that the method includes:

The receiving terminal receives the fixed direct communication request message sent by the sending terminal;

Sending, by the receiving terminal, a direct communication response message to the sending terminal;

Establishing a direct communication connection between the receiving terminal and the sending terminal;

Wherein, the direct connection communication request message includes the IoV layer identifier and/or target application layer identifier of the sending terminal; the direct connection communication response message includes the IoV layer identifier of the receiving terminal; wherein, the target The application layer identifier is the application layer identifier of the receiving terminal.
The method of claim 14, wherein the vehicle networking layer identifier of the transmitting terminal corresponds to multiple application layer identifiers of the transmitting terminal; the vehicle networking layer identifier of the receiving terminal corresponds to multiple application layer identifiers of the receiving terminal. Application layer identification.
The method according to claim 14, wherein the direct communication request message further includes some or all of the following:

The application layer identifier, the target application layer identifier, the direct communication flow identifier and the quality of service parameters corresponding to the direct communication flow of the sending terminal; wherein the target application layer identifier establishes a direct communication connection for the sending terminal The application layer identifier of the opposite end.
The method according to claim 14, wherein the direct communication response message further comprises:

The application layer identifier of the receiving terminal.
The method according to claim 17, wherein the application layer identifier of the receiving terminal comprises:

The target application layer identifier requested by the sending terminal; or

The target application layer identifier requested by the sending terminal and other application layer identifiers supported by the receiving terminal.
The method according to claim 14, wherein the establishing a direct communication connection between the receiving terminal and the sending terminal further comprises:

The receiving terminal performs data transmission through a direct communication stream established with the sending terminal.
The method according to claim 14, wherein after the receiving terminal establishes a direct communication connection with the sending terminal, the method further comprises:

Receiving, by the receiving terminal, an update request message sent by the sending terminal;

The receiving terminal feeds back an update response message to the sending terminal;

Wherein, the update request message includes the application layer identifier of the sending terminal, the Internet of Vehicles layer identifier of the sending terminal, one application layer identifier among other application layer identifiers supported by the receiving terminal, and the vehicle of the receiving terminal. Networking layer identification and direct communication flow identification; the update response message includes the application layer identification of the receiving terminal, the vehicle networking layer identification of the receiving terminal, and the direct communication flow identification.
The method according to claim 14, wherein after the receiving terminal establishes a direct communication connection with the sending terminal, the method further comprises:

The receiving terminal receives the direct communication request message broadcast by the sending terminal; wherein the direct communication request message includes the application layer identifier of the sending terminal, the vehicle networking layer identifier of the sending terminal, and the new target application layer ID, the new direct communication flow ID and the quality of service parameters corresponding to the direct communication flow ID;

After the receiving terminal determines that the target application layer identifier is an application layer identifier supported by itself, it sends a direct communication response message to the sending terminal; wherein the direct communication response message includes the car networking layer of the receiving terminal Identification and direct communication flow identification.
22. The method according to claim 21, wherein before the receiving terminal sends a direct communication response message to the sending terminal, the method further comprises:

The receiving terminal determines the direct communication flow identifier.
The method according to claim 22, wherein the determining of the direct connection communication flow identifier by the receiving terminal comprises:

The receiving terminal determines the direct communication flow identifier according to the service quality parameter corresponding to the direct communication flow identifier in the direct communication request message broadcast by the sending terminal and the service quality of the established direct communication flow.
The method according to claim 23, wherein the receiving terminal determines the direct communication according to the quality of service parameters in the direct communication request message broadcast by the sending terminal and the quality of service with the established direct communication flow. Flow identification, including:

If the service quality of the established direct communication flow meets the quality of service parameters in the direct communication request message broadcast by the sending terminal, the sending terminal reuses the established direct communication flow identifier; otherwise, the The sending terminal establishes a new direct communication flow identifier.
A sending terminal for direct communication, characterized in that the sending terminal includes a processor and a memory, wherein the memory stores program codes, and when one or more computer programs stored in the memory are used by the processor When executed, the sending terminal is caused to execute the following process:

Send a direct communication request message;

Receive a direct communication response message fed back by the receiving terminal;

Establishing a direct communication connection with the receiving terminal;

Wherein, the direct connection communication request message includes the IoV layer identifier and/or target application layer identifier of the sending terminal; the direct connection communication response message includes the IoV layer identifier of the receiving terminal; wherein, the target The application layer identifier is the application layer identifier of the receiving terminal.
The sending terminal according to claim 25, wherein the vehicle networking layer identifier of the sending terminal corresponds to multiple application layer identifiers of the sending terminal; the vehicle networking layer identifier of the receiving terminal corresponds to the receiving terminal Multiple application layer identification.
The sending terminal according to claim 25, wherein the direct communication request message further includes some or all of the following:

The application layer identifier, the target application layer identifier, the direct communication flow identifier and the quality of service parameters corresponding to the direct communication flow of the sending terminal; wherein the target application layer identifier establishes a direct communication connection for the sending terminal The application layer identifier of the opposite end.
The sending terminal according to claim 25, wherein the direct communication response message further includes an application layer identifier of the receiving terminal.
The sending terminal according to claim 28, wherein the application layer identifier of the receiving terminal includes the target application layer identifier requested by the sending terminal; or the target application layer identifier requested by the sending terminal and Other application layer identifiers supported by the receiving terminal.
The sending terminal according to claim 25, wherein the processor is further configured to:

Establish a direct communication flow with the receiving terminal.
The sending terminal according to claim 25, wherein the processor is further configured to:

Determine the new application layer service quality requirements;

Send update request message;

Receiving an update response message fed back by the receiving terminal;

Wherein, the update request message includes the application layer identifier of the sending terminal, the Internet of Vehicles layer identifier of the sending terminal, one application layer identifier among other application layer identifiers supported by the receiving terminal, and the vehicle of the receiving terminal. Networking layer identification and direct communication flow identification; the update response message includes the application layer identification of the receiving terminal, the vehicle networking layer identification of the receiving terminal, and the direct communication flow identification.
The sending terminal according to claim 31, wherein the processor is further configured to:

Determine the vehicle networking layer identifier of the receiving terminal corresponding to other application layer identifiers supported by the receiving terminal and the direct communication flow identifier corresponding to the new application layer service quality requirement.
The sending terminal according to claim 32, wherein the processor is specifically configured to:

Determine the direct connection communication flow identifier corresponding to the new application layer service quality requirement according to the new application layer service quality requirement and the service quality of the established direct communication flow.
The sending terminal according to claim 33, wherein the processor is specifically configured to:

If the service quality of the established direct communication flow meets the application layer service quality requirements, then determine the established direct communication flow identifier that meets the application layer service quality requirements as the direct communication flow corresponding to the new application layer service quality requirements Flow identifier; otherwise, a new direct communication flow identifier is established as the direct communication flow identifier corresponding to the new application layer service quality requirement.
The sending terminal according to claim 25, wherein the processor is further configured to:

Determine the new application layer service quality requirements;

Broadcast a new direct communication request message; wherein, the direct communication request message includes the application layer identifier of the sending terminal, the vehicle networking layer identifier of the sending terminal, the new target application layer identifier, and the new direct communication flow Identifies the quality of service parameter corresponding to the direct communication flow identifier.
The sending terminal according to claim 35, wherein the processor is further configured to:

If the target application layer identifier is an application layer identifier supported by the receiving terminal, after broadcasting a new direct communication request message, receive a direct communication response message sent by the receiving terminal; wherein, the direct communication response message The vehicle networking layer identifier and the direct communication flow identifier of the receiving terminal are included.
The sending terminal according to claim 35, wherein the processor is specifically configured to:

After receiving the direct communication response message sent by the receiving terminal, if the direct communication flow identifier fed back by the receiving terminal is an established direct communication flow identifier, the direct connection corresponding to the established direct communication flow identifier is reused Communication flow

If the direct communication flow identifier fed back by the receiving terminal is the new direct communication flow identifier included in the new direct communication request message sent by the sending terminal, then the new direct communication flow identifier correspondence is established Direct communication flow.
A receiving terminal for direct communication, characterized in that the receiving terminal includes a processor and a memory, wherein the memory stores program codes, and when one or more computer programs stored in the memory are used by the processor When executed, the receiving terminal is caused to execute the following process:

Receive a fixed direct communication request message sent by the sending terminal;

Sending a direct communication response message to the sending terminal;

Establishing a direct communication connection with the sending terminal;

Wherein, the direct connection communication request message includes the IoV layer identifier and/or target application layer identifier of the sending terminal; the direct connection communication response message includes the IoV layer identifier of the receiving terminal; wherein, the target The application layer identifier is the application layer identifier of the receiving terminal.
The receiving terminal according to claim 38, wherein the vehicle networking layer identifier of the transmitting terminal corresponds to multiple application layer identifiers of the transmitting terminal; the vehicle networking layer identifier of the receiving terminal corresponds to the receiving terminal Multiple application layer identification.
The receiving terminal according to claim 38, wherein the direct communication request message further includes some or all of the following:

The application layer identifier, the target application layer identifier, the direct communication flow identifier and the quality of service parameters corresponding to the direct communication flow of the sending terminal; wherein the target application layer identifier establishes a direct communication connection for the sending terminal The application layer identifier of the opposite end.
The receiving terminal according to claim 38, wherein the direct communication response message further includes an application layer identifier of the receiving terminal.
The receiving terminal according to claim 38, wherein the application layer identifier of the receiving terminal comprises:

The target application layer identifier requested by the sending terminal; or

The target application layer identifier requested by the sending terminal and other application layer identifiers supported by the receiving terminal.
The receiving terminal according to claim 38, wherein the processor is further configured to:

Data transmission is performed through a direct communication stream established with the sending terminal.
The receiving terminal according to claim 38, wherein the processor is further configured to:

After establishing a direct communication connection with the sending terminal, receiving an update request message sent by the sending terminal;

Feedback an update response message to the sending terminal;

Wherein, the update request message includes the application layer identifier of the sending terminal, the Internet of Vehicles layer identifier of the sending terminal, one application layer identifier among other application layer identifiers supported by the receiving terminal, and the vehicle of the receiving terminal. Networking layer identification and direct communication flow identification; the update response message includes the application layer identification of the receiving terminal, the vehicle networking layer identification of the receiving terminal, and the direct communication flow identification.
The receiving terminal according to claim 38, wherein the processor is further configured to:

After the direct communication connection with the sending terminal is established, the direct communication request message broadcast by the sending terminal is received; wherein the direct communication request message includes the application layer identifier of the sending terminal, and the sending terminal Terminal car networking layer identification, new target application layer identification, new direct communication flow identification and service quality parameters corresponding to the direct communication flow identification;

After determining that the target application layer identifier is an application layer identifier supported by itself, send a direct communication response message to the sending terminal; wherein, the direct communication response message includes the IoV layer identifier and the direct connection of the receiving terminal Communication flow ID.
The receiving terminal according to claim 45, wherein the processor is further configured to:

Before sending the direct communication response message to the sending terminal, determine the direct communication flow identifier.
The receiving terminal according to claim 46, wherein the processor is specifically configured to:

The direct communication flow identifier is determined according to the service quality parameter corresponding to the direct communication flow identifier in the direct communication request message broadcast by the sending terminal and the service quality of the established direct communication flow.
The receiving terminal according to claim 47, wherein the processor is specifically configured to:

If the quality of service of the established direct communication flow meets the quality of service parameters in the direct communication request message broadcast by the sending terminal, the established direct communication flow identifier is reused; otherwise, a new direct communication is established Flow ID.
A sending terminal for direct communication, characterized in that the sending terminal includes:

The first sending module: used to send a direct communication request message;

The first receiving module: used to receive the direct communication response message fed back by the receiving terminal;

The first processing module: used to establish a direct communication connection with the receiving terminal; wherein the direct communication request message includes the vehicle networking layer identifier of the sending terminal; the direct communication response message includes all The vehicle networking layer identification of the receiving terminal.
A receiving terminal for direct communication, characterized in that the receiving terminal includes:

The second receiving module: used to receive the fixed direct communication request message sent by the sending terminal;

The second sending module: used to send a direct communication response message to the sending terminal;

The second processing module: used to establish a direct communication connection with the sending terminal;

Wherein, the direct connection communication request message includes the IoV layer identifier and/or target application layer identifier of the sending terminal; the direct connection communication response message includes the IoV layer identifier of the receiving terminal; wherein, the target The application layer identifier is the application layer identifier of the receiving terminal.
A computer storage medium, wherein the computer storage medium stores computer-executable instructions, and the computer-executable instructions are used to make the computer execute the method according to any one of claims 1 to 13, and execute The method of any one of claims 14-24.