CN112291742B

CN112291742B - Direct communication method and device

Info

Publication number: CN112291742B
Application number: CN201910677518.1A
Authority: CN
Inventors: 邓强
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2019-07-25
Filing date: 2019-07-25
Publication date: 2022-04-01
Anticipated expiration: 2039-07-25
Also published as: WO2021012939A1; CN112291742A

Abstract

The invention discloses a method and equipment for direct connection communication, which are used for solving the problem that wireless resources are easily wasted by the conventional method for establishing direct connection communication between terminals. According to the embodiment of the invention, the sending terminal and the receiving terminal establish the direct communication connection according to the corresponding vehicle networking layer identification, if the sending terminal and the receiving terminal have new application layer service requirements when data transmission is carried out, the sending terminal can use the established QoSflow meeting the new application layer service requirements to carry out V2X message transmission with the receiving terminal, and the waste of wireless resources caused by repeatedly establishing the QoSflow with the same QoS parameters between the sending terminal and the receiving terminal is avoided.

Description

Direct communication method and device

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and a device for direct communication.

Background

In 3GPP (3rd Generation Partnership Project, third Generation standardization organization) standards, a mode of directly performing V2X (vehicle to X) communication between two UEs (User equipments) is defined, transmission of V2X messages is performed through a PC5 interface between the UEs without passing through a network, and when two UEs communicate in a unicast manner, a unicast link is established between the two UEs. As shown in fig. 1, the transmission and reception of V2X messages between UE a and UE B are performed through a PC5 interface, and the transmission of V2X messages does not pass through the network.

In the prior art, a PC5 unique link is identified by Layer-2 ID (identification) of two UEs, and multiple PCs 5 unique links may be established between the two UEs. Different PCs 5 uni-cal links may contain the same QoS (Quality of Service) flows, and these QoS flows will be mapped to different SLRBs (SideLink Radio Bearer), resulting in waste of Radio resources.

In summary, the conventional method for establishing direct communication between terminals is prone to cause waste of wireless resources.

Disclosure of Invention

The invention provides a method and equipment for direct communication, which are used for solving the problem that wireless resources are easily wasted by the conventional method for establishing direct communication between terminals.

In a first aspect, a method for direct communication provided in an embodiment of the present invention includes:

a sending terminal sends a direct connection communication request message;

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

the sending terminal establishes direct communication connection with the receiving terminal;

wherein, the direct connection communication request message comprises the vehicle networking layer identifier and/or the target application layer identifier of the sending terminal; the direct communication response message comprises the vehicle networking layer identification of the receiving terminal; and the target application layer identification is the application layer identification of the receiving terminal.

According to the method, the sending terminal and the receiving terminal establish direct connection communication connection according to the corresponding vehicle networking layer identification, if a new application layer service requirement exists when the sending terminal and the receiving terminal perform data transmission, the sending terminal can use the established QoS flow meeting the new application layer service requirement to perform V2X message transmission with the receiving terminal, and waste of wireless resources caused by repeated establishment of QoS flow with the same QoS parameters between the sending terminal and the receiving terminal is avoided.

In an optional implementation manner, the identifier of the internet layer of the sending terminal corresponds to a plurality of application layer identifiers of the sending terminal; and the vehicle networking layer identification of the receiving terminal corresponds to the plurality of application layer identifications of the receiving terminal.

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

the application layer identification, the target application layer identification, the direct connection communication stream identification and the service quality parameter corresponding to the direct connection communication stream of the sending terminal; the target application layer identifier is an application layer identifier of an opposite terminal of the sending terminal establishing the direct communication connection.

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

and receiving the application layer identification of the terminal.

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

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

The target application layer identification requested by the sending terminal and other application layer identifications supported by the receiving terminal.

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

and the sending terminal establishes 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 a new application layer service quality requirement exists;

the sending terminal sends an updating request message;

the sending terminal receives the update response message fed back by the receiving terminal;

wherein, the update request message includes an application layer identifier of the sending terminal, an internet layer identifier of the sending terminal, one of other application layer identifiers supported by the receiving terminal, an internet layer identifier of the receiving terminal, and a direct connection communication stream identifier; the update response message includes the application layer identifier of the receiving terminal, the car networking layer identifier of the receiving terminal, and the direct communication stream identifier.

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

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

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

and the sending terminal determines 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 established service quality of the direct connection communication flow.

In an optional implementation manner, the determining, by the sending terminal, a direct connection traffic flow identifier corresponding to the new application layer quality of service requirement according to the new application layer quality of service requirement and the quality of service of the established direct connection traffic flow by the sending terminal includes:

if the service quality of the established direct connection communication stream meets the application layer service quality requirement, the sending terminal determines the established direct connection communication stream identifier meeting the application layer service quality requirement as the direct connection communication stream identifier corresponding to the new application layer service quality requirement; and if not, the sending terminal establishes a new direct connection communication flow identifier as the direct connection communication flow identifier corresponding to the new application layer service quality requirement.

the sending terminal broadcasts a new direct communication request message, wherein the direct communication request message comprises an application layer identifier of the sending terminal, a vehicle networking layer identifier of the sending terminal, a new target application layer identifier, a new direct communication stream identifier and a service quality parameter corresponding to the direct communication stream 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 connection communication request message, the method further includes:

the sending terminal receives a direct communication response message sent by the receiving terminal; wherein the direct communication response message includes an internet layer identifier and a direct communication stream identifier of the receiving terminal.

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

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

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

if the direct-connection communication stream identifier fed back by the receiving terminal is the established direct-connection communication stream identifier, reusing the direct-connection communication stream corresponding to the established direct-connection communication stream identifier by the sending terminal;

and if the direct connection communication stream identifier fed back by the receiving terminal is the new direct connection communication stream identifier contained in the new direct connection communication request message sent by the sending terminal, the sending terminal establishes a direct connection communication stream corresponding to the new direct connection communication stream identifier.

In a second aspect, a method for direct communication provided in an embodiment of the present invention includes:

a receiving terminal receives a fixed direct connection communication request message sent by a sending terminal;

the receiving terminal sends a direct communication response message to the sending terminal;

the receiving terminal establishes direct communication connection with the sending terminal;

and receiving the application layer identification of the terminal.

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

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

and the receiving terminal carries out data transmission through the direct connection communication stream established between the receiving terminal and 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:

the receiving terminal receives an updating request message sent by the sending terminal;

the receiving terminal feeds back an updating response message to the sending terminal;

the receiving terminal receives a direct connection communication request message broadcast by the sending terminal; the direct connection communication request message comprises an application layer identifier of the sending terminal, a vehicle networking layer identifier of the sending terminal, a new target application layer identifier, a new direct connection communication stream identifier and a service quality parameter corresponding to a direct connection communication stream identifier;

after the receiving terminal determines that the target application layer identification is an application layer identification supported by the receiving terminal, the receiving terminal sends a direct communication response message to the sending terminal; wherein the direct communication response message includes an internet layer identifier and a direct communication stream identifier of the receiving terminal.

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

and the receiving terminal determines the direct connection communication flow identification.

In an optional embodiment, the determining, by the receiving terminal, a direct communication flow identifier includes:

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

In an optional implementation manner, the determining, by the receiving terminal, a direct connection communication stream identifier according to a quality of service parameter in a direct connection communication request message broadcast by the sending terminal and a quality of service of an established direct connection communication stream by the receiving terminal includes:

if the service quality of the established direct connection communication stream meets the service quality parameter in the direct connection communication request message broadcast by the sending terminal, the sending terminal reuses the established direct connection communication stream identifier; otherwise, the sending terminal establishes a new direct connection communication flow identifier.

In a third aspect, an embodiment of the present invention further provides a sending terminal for direct communication, where the sending terminal includes: a processor and a memory, wherein the memory stores program code that, when executed by the processor, causes the transmitting terminal to perform the following:

sending a direct connection communication request message;

receiving a direct connection communication response message fed back by a receiving terminal;

establishing direct communication connection with the receiving terminal;

In a possible implementation manner, the identifier of the internet layer of the sending terminal corresponds to a plurality of application layer identifiers of the sending terminal; and the vehicle networking layer identification of the receiving terminal corresponds to the plurality of application layer identifications of the receiving terminal.

In one 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 an application layer identifier of the receiving 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 the target application layer identification requested by the sending terminal and other application layer identifications supported by the receiving terminal.

In one possible implementation, the processor is further configured to:

establishing a direct communication flow with the receiving terminal.

In one possible implementation, the processor is further configured to:

determining that a new application layer service quality requirement exists;

sending an update request message;

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

In one possible implementation, the processor is further configured to:

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

In one possible implementation, the processor is specifically configured to:

and determining 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 established service quality of the direct connection communication flow.

In one possible implementation, the processor is specifically configured to:

if the service quality of the established direct connection communication stream meets the application layer service quality requirement, determining the established direct connection communication stream identifier meeting the application layer service quality requirement as a direct connection communication stream identifier corresponding to the new application layer service quality requirement; and otherwise, establishing a new direct connection communication flow identifier as the direct connection communication flow identifier corresponding to the new application layer service quality requirement.

In one possible implementation, the processor is further configured to:

determining that a new application layer service quality requirement exists;

broadcasting a new direct connection communication request message; the direct connection communication request message comprises an application layer identifier of the sending terminal, a vehicle networking layer identifier of the sending terminal, a new target application layer identifier, a new direct connection communication stream identifier and a service quality parameter corresponding to the direct connection communication stream identifier.

In one possible implementation, the processor is further configured to:

if the target application layer identifier is the application layer identifier supported by the receiving terminal, after broadcasting a new direct communication request message, receiving a direct communication response message sent by the receiving terminal; wherein the direct communication response message includes an internet layer identifier and a direct communication stream identifier of the receiving terminal.

In one possible implementation, the processor is specifically configured to:

after receiving a direct communication response message sent by the receiving terminal, if a direct communication stream identifier fed back by the receiving terminal is an established direct communication stream identifier, reusing the direct communication stream corresponding to the established direct communication stream identifier;

and if the direct connection communication stream identifier fed back by the receiving terminal is the new direct connection communication stream identifier contained in the new direct connection communication request message sent by the sending terminal, establishing a direct connection communication stream corresponding to the new direct connection communication stream identifier.

In a fourth aspect, an embodiment of the present invention further provides a receiving terminal for direct communication, where the receiving terminal includes: a processor and a memory, wherein the memory stores program code that, when executed by the processor, causes the receiving terminal to perform the following:

receiving a fixed direct connection communication request message sent by a sending terminal;

sending a direct communication response message to the sending terminal;

establishing direct connection communication connection with the sending terminal;

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

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

In one possible implementation, the processor is further configured to:

and carrying out data transmission through the direct connection communication stream established between the sending terminal and the sending terminal.

In one possible implementation, the processor is further configured to:

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

feeding back an update response message to the sending terminal;

In one possible implementation, the processor is further configured to:

feeding back an update response message to the sending terminal;

In one possible implementation, the processor is further configured to:

and determining a direct communication stream identifier before sending a direct communication response message to the sending terminal.

In one possible implementation, the processor is specifically configured to:

and determining the direct communication stream identifier according to the service quality parameter corresponding to the direct communication stream identifier in the direct communication request message broadcast by the sending terminal and the service quality of the established direct communication stream.

In one possible implementation, the processor is specifically configured to:

if the service quality of the established direct connection communication stream meets the service quality parameter in the direct connection communication request message broadcast by the sending terminal, reusing the established direct connection communication stream identifier; otherwise, establishing a new direct connection communication flow identifier.

In a fifth aspect, an embodiment of the present invention further provides a sending terminal for direct communication, where the sending terminal includes:

a first sending module: for sending a direct communication request message;

a first receiving module: the system comprises a receiving terminal, a direct communication server and a server, wherein the receiving terminal is used for receiving a direct communication response message fed back by the receiving terminal;

a first processing module: the system comprises a receiving terminal and a server, wherein the receiving terminal is used for establishing direct communication connection with the receiving terminal; wherein, the direct connection communication request message contains the vehicle networking layer identification of the sending terminal; and the direct connection communication response message contains the vehicle networking layer identification of the receiving terminal.

In a sixth aspect, an embodiment of the present invention further provides a receiving terminal for direct communication, where the receiving terminal includes:

a second receiving module: the system comprises a receiving terminal, a sending terminal and a sending terminal, wherein the receiving terminal is used for receiving a fixed direct connection communication request message sent by the sending terminal;

a second sending module: the system comprises a sending terminal and a receiving terminal, wherein the sending terminal is used for sending a direct communication response message to the sending terminal;

a second processing module: the system comprises a server and a sending terminal, wherein the server is used for establishing direct communication connection with the sending terminal;

In a seventh aspect, the present application further provides a computer storage medium having a computer program stored thereon, which when executed by a processor, performs the steps of the method of the first or second aspect.

In addition, for technical effects brought by any one implementation manner of the second aspect to the sixth aspect, reference may be made to technical effects brought by different implementation manners of the first aspect or the second aspect, and details are not described here.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic diagram of communication between terminals through a PC5 interface according to an embodiment of the present invention;

fig. 2 is a schematic diagram of establishing a PC5 unified link between terminals according to an embodiment of the present invention;

fig. 3 is a schematic diagram of mapping relationships between protocol layers involved in establishing direct communication by a terminal according to an embodiment of the present invention;

FIG. 4 is a system diagram of direct communication according to an embodiment of the present invention;

fig. 5 is a schematic diagram illustrating an operation of a related process for establishing direct communication according to an embodiment of the present invention;

FIG. 6 is a diagram of a built PC5 unified link and QoS flow according to an embodiment of the present invention;

fig. 7 is a schematic diagram illustrating the operation of a related process for establishing an updated QoS flow according to an embodiment of the present invention;

fig. 8 is a schematic diagram illustrating a comparison between before and after setting up a new QoS flow according to an embodiment of the present invention;

fig. 9 is a schematic diagram illustrating an operation of a related process for reusing an established QoS flow according to an embodiment of the present invention;

fig. 10 is a diagram illustrating a comparison between a former and a later step of establishing an established QoS flow according to an embodiment of the present invention;

fig. 11 is a schematic diagram illustrating another related flow operation for establishing a new QoS flow according to an embodiment of the present invention;

fig. 12 is a diagram illustrating another related flow operation for reusing an established QoS flow according to an embodiment of the present invention;

fig. 13 is a schematic structural diagram of a sending terminal according to an embodiment of the present invention;

fig. 14 is a schematic structural diagram of another sending terminal according to an embodiment of the present invention;

fig. 15 is a schematic structural diagram of a receiving terminal according to an embodiment of the present invention;

fig. 16 is a schematic structural diagram of another receiving terminal according to an embodiment of the present invention;

fig. 17 is a flowchart illustrating a method of a sending terminal in a direct communication method according to an embodiment of the present invention;

fig. 18 is a flowchart illustrating a method at a receiving terminal side in a direct communication method according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Some of the words that appear in the text are explained below:

1. the term "and/or" in the embodiments of the present invention describes an association relationship of associated objects, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

2. In the embodiments of the present application, the term "plurality" means two or more, and other terms are similar thereto.

The application scenario described in the embodiment of the present invention is for more clearly illustrating the technical solution of the embodiment of the present invention, and does not form a limitation on the technical solution provided in the embodiment of the present invention, and it can be known by a person skilled in the art that with the occurrence of a new application scenario, the technical solution provided in the embodiment of the present invention is also applicable to similar technical problems. In the description of the present invention, the term "plurality" means two or more unless otherwise specified.

In the prior art, a terminal establishes corresponding application layer identifiers by different organizations of an application layer of the terminal, and initiates V2X communication with opposite-end equipment through the application layer identifiers, that is, a PC5 unified link is established between two terminals.

In the current standard, it is defined that the granularity of the PC5 unique link corresponds to a pair of Application Layer identifiers, that is, a PC5 unique link can be established between an Application Layer identifier of a transmitting terminal and an Application Layer identifier of a receiving terminal, the PC5 unique link is identified by a pair of Layer 2 IDs of the transmitting terminal and the receiving terminal, and an Application Layer identifier of the terminal corresponds to a Layer 2ID, so that if the Layer 2ID of the terminal is used to identify the PC5 unique link, the PC5 unique link corresponding to each pair of Application Layer identifiers needs a pair of Layer 2 IDs for identification, that is, a pair of Application Layer IDs corresponds to a pair of Layer-2 IDs.

As shown in fig. 2, two PC5 unified links are established between UEA and UEB, which are: PC5 unicast link1 and PC5 unicast link 2. Wherein PC5 unique link1 is used for transmission of V2X messages between application layer ID1 of ue a and application layer ID 2 of ue b; PC5 unique link2 is used for transmission of V2X messages between application layer ID 3 of ue a and application layer ID 4 of ue b.

The PC5 unified link1 includes QoS Flow #1, QoS Flow #2 and QoS Flow # 3; PC5 unicastlink 2 includes QoS Flow #4 and QoS Flow # 5; each QoS Flow maps to a different SLRB, which would result in duplicate mapping of QoS flows if the QoS flows contained in PC5 unique link1 and PC5 unique link2 had the same or associated QoS parameter, such as: the QoS Flow #1 and the QoS Flow #4 have the exactly same QoS parameter, that is, have the same QoS guarantee. However, since QoS Flow #1 and QoS Flow #4 belong to different PC5 unique links, 2 QoS flows need to be established, and further, mapping to 2 different SLRBs is required, resulting in waste of radio resources.

The embodiment of the invention defines a new UE identification, namely a vehicle networking Layer identification (V2X Layer ID), and a transmitting terminal and a receiving terminal establish a PC5 unicastlink and QoS Flow through the V2X Layer ID.

The vehicle networking layer identification of the terminal can be a preset public identification or an identification corresponding to an IP/Non-IP layer of the terminal, each terminal is provided with a unique vehicle networking layer identification, a plurality of application layer identifications of the terminal can be mapped to the same vehicle networking layer identification of the terminal, and the vehicle networking layer identifications of the terminal and the layer 2 identifications of the terminal are in one-to-one correspondence.

As shown in fig. 3, a schematic diagram of establishing a PC5 unified link for Application Layer identifiers of the UEA and the UEB, corresponding relationship between the vehicle networking Layer identifiers and the Layer 2 identifiers, and the UEA and the UEB according to the vehicle networking Layer identifiers is shown, wherein the Application Layer identifiers of the UEA include Application Layer ID-1 and Application Layer ID-3, the Application Layer ID-1 and Application Layer ID-3 correspond to the vehicle networking Layer identifier UEA V2X Layer ID of the UEA, and the vehicle networking Layer identifier UEA V2X Layer ID of the UEA corresponds to the Layer 2 identifier UEA Layer-2 ID of the UEA; the Application Layer identification of the UEB comprises Application Layer ID-2 and Application Layer ID-4, the Application Layer ID-2 and Application Layer ID-4 correspond to an internet Layer identification UEB V2X Layer ID of the UEB, and the internet Layer identification UEB V2X Layer ID of the UEB corresponds to a Layer 2 identification UEB Layer-2 ID of the UEB;

therefore, the identifications of the PC5 unique link corresponding to the Application Layer ID-1 of UEA and the Application Layer ID-2 of UEB are UEA Layer-2 ID and UEB Layer-2 ID; the identification of the PC5 unique link corresponding to the Application Layer ID-3 of the UE A and the Application Layer ID-4 of the UE B is also the ID of the UE A Layer-2 and the ID of the UE B Layer-2, so that the PC5 unique link does not need to be repeatedly established, and the QoS flow can be updated according to the new QoS requirement of an Application Layer.

Because the granularity of the PC5 unified link is not changed, when the PC5 unified link is established according to the vehicle networking layer identifier of the terminal, a unique PC5 unified link is established between the transmitting terminal and the receiving terminal, and when the transmitting terminal and the receiving terminal have a new QoS requirement, the established QoSflow meeting the new QoS requirement can be used for transmitting the V2X message, that is, on the same SLRB, thereby avoiding the waste of wireless resources caused by repeatedly establishing the QoSflow with the same QoS parameters between the two terminals.

The embodiments of the present invention will be described in further detail with reference to the drawings attached hereto.

As shown in fig. 4, an embodiment of the present invention provides a system for direct communication, including: a transmitting terminal 10 and a receiving terminal 20.

A sending terminal 10, configured to send a direct connection communication request message; receiving a direct connection communication response message fed back by a receiving terminal; establishing direct communication connection with the receiving terminal;

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

Through the scheme, the sending terminal and the receiving terminal establish direct connection communication connection according to the corresponding vehicle networking layer identification, if a new application layer service requirement exists when the sending terminal and the receiving terminal carry out data transmission, the sending terminal can use the established QoSflow meeting the new application layer service requirement to carry out V2X message transmission with the receiving terminal, and waste of wireless resources caused by repeated establishment of QoSflow with the same QoS parameters between the sending terminal and the receiving terminal is avoided.

Embodiments of the present invention generally relate to two aspects, including: in a first aspect: a sending terminal and a receiving terminal establish a PC5 unified link and a QoS flow; in a second aspect: the sending terminal updates the QoS flow between the sending terminal and the receiving terminal according to the new application layer service quality requirement; the following description of the two aspects is provided by way of specific examples:

assuming that UE-1 is a sending terminal, assuming that an Application Layer identifier of UE-1 comprises Application Layer ID-1 and Application Layer ID-3, an Internet protocol (IP/Non-IP) identifier of UE-1 is UE-1V 2X Layer ID, an Application Layer, IP/Non-IP and SDAP Layer of UE-1 are formed into a Layer 2, and a Layer 2 identifier of UE-1 is UE-1 Layer-2 ID; wherein, a plurality of application layer identifications of the UE-1 can be mapped to the same Internet of vehicles identification, and the Internet of vehicles identification of the UE-1 is in one-to-one correspondence with the layer 2 identification.

UE-2 is a receiving terminal, and the Application Layer identification of UE-2 is assumed to contain Application Layer ID-2 and Application Layer ID-4, the Internet of vehicle Layer (IP/Non-IP) identification of UE-1 is UE-2V2X Layer ID, the Application Layer, IP/Non-IP and SDAP Layer of UE-2 are formed into Layer 2, and Layer 2 identification of UE-2 is UE-2Layer-2 ID; the plurality of application layer identifications of the UE-2 can be mapped to the same Internet of vehicle layer identification, and the Internet of vehicle layer identification of the UE-2 corresponds to the layer 2 identification one by one.

In the embodiment of the invention, an Application Layer ID-1 of UE-1 initiates a direct communication connection request to an Application Layer ID-2, because the UE-1 does not determine a terminal supporting the Application Layer ID-2, the UE-1 broadcasts a direct communication request message, the UE-2 receives the direct communication request message sent by the UE-1, the UE-2 determines that the UE-2 supports the Application Layer ID-2, the UE-2 feeds back to a direct communication response message of the UE-1, and the UE-1 and the UE-2 establish a PC5 unified link and QoS flow;

based on other application layer identifiers supported by the direct connection communication self fed back by the UE-2, the ways of establishing the PC5 unified link, the QoS flow and updating the QoS flow by the sending terminal and the receiving terminal are different correspondingly.

If the UE-2 places other Application Layer identifications supported by the UE-2 in the direct connection communication response message, when the Application Layer ID-3 of the UE-1 initiates direct connection communication to other Application layers of the UE-2, a PC5 unified link with the UE-2 does not need to be reestablished, and a QoS flow updating request can be directly sent to the UE-2; if the UE-2 does not place other Application Layer identifications supported by the UE-2 in the direct connection communication response message, when the Application Layer ID-3 of the UE-1 initiates direct connection communication to other Application layers, the UE-1 cannot determine opposite terminal equipment, so that the UE-1 needs to broadcast a new direct connection communication connection request.

The following description is provided by specific embodiments 1 to 3 for an interactive flow in which the sending terminal and the receiving terminal establish a PC5 unified link and QoS flow and update the QoS flow when the receiving terminal feeds back other application layer identifiers supported by the sending terminal to the receiving terminal:

example 1: establishing a PC5 unified link and QoS flow between UE-1 and UE-2;

an Application Layer ID-1 of the UE-1 initiates a direct communication connection to an Application Layer ID-2, and as shown in fig. 5, an interaction flow diagram for establishing a PC5 unique link and a QoS flow #1 between the UE-1 and the UE-2 provided by the embodiment of the present invention mainly includes the following steps:

step 500: UE-1 broadcasts a Direct Communication Request message (Direct Communication Request);

wherein the direct communication request message includes a vehicle networking Layer identification (UE-1V 2X Layer ID) of the UE-1 and a target Application Layer identification Application Layer ID-2.

The direct communication request message further includes some or all of the following information: the system comprises a service type, an Application Layer ID-1, a UE-1 Layer-2 ID, and a PC5 QoS parameter corresponding to QFI (QoS Flow Identifier) #1 and QFI #1, wherein a target Application Layer Identifier is an Application Layer Identifier of an opposite end of the sending terminal which establishes direct communication connection.

After receiving the direct communication request message sent by the UE-1, the UE-2, the UE-3 and the UE-4 determine whether the UE-2, the UE-3 and the UE-4 support the target application layer identification in the direct 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 a car networking Layer identifier (UE-2V2X Layer ID) of UE-2, and the direct communication response message may further include part or all of the following information: application Layer ID-1, UE-1V 2X Layer ID, UE-1 Layer-2 ID, Application Layer ID-2, UE-2Layer-2 ID and QFI #1, PC5 QoS parameter and Application Layer ID-4 corresponding to QFI # 1. Wherein, the Application Layer ID-4 is other self-supported Application Layer identifications fed back to the UE-1 by the UE-2.

Step 502: UE-1 and UE-2 transmit V2X message by establishing PC5 unique link and QoS Flow # 1;

as shown in FIG. 6, for the schematic diagram of the PC5 unique link and QoS Flow #1 established between UE-1 and UE-2 provided by the embodiment of the present invention, the V2X message is transmitted between the Application Layer ID-1 of UE-1 and the Application Layer ID-2 of UE-2 through QoS Flow # 1.

The PC5 unique link is identified by Layer-2 IDs of UE-1 and UE-2, and the QoS flow #1 is identified by QFI # 1.

Based on embodiment 1, a PC5 unified link and QoS flow #1 are established between UE-1 and UE-2. On this basis, when the UE-1 has a new Application Layer QoS requirement, for example, the Application Layer ID-3 of the UE-1 initiates direct communication to the Application Layer ID-4, as in step 503 of the above embodiment 1, since the UE-2 has fed back the self-supporting Application Layer ID-4 to the UE-1 and the PC5 unique link identified by the UE-1 Layer-2 ID and the UE-2Layer-2 ID is established between the UE-1 and the UE-2, the UE-1 only needs to update the QoS flow between the UE-2 according to the new Application Layer QoS requirement.

When UE-1 updates the QoS flow between UE-2 according to the new application layer QoS requirement, two possible situations exist, the first possible situation is that the PC5 unified link between UE-1 and UE-2 does not have the QoS flow meeting the new application layer QoS requirement, and UE-1 creates a new QoS flow meeting the new application layer QoS requirement; another possible scenario is that the PC5 unique link between UE-1 and UE-2 contains a QoS flow that satisfies the new Application Layer QoS requirement, such as an established QoS flow #1, and then UE-1 reuses QoS flow #1 to transmit direct communication between Application Layer ID-3 of UE-1 and Application Layer ID-4 of UE-2.

The following describes an update method corresponding to the first possible case by embodiment 2.

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

and the Application Layer ID-3 of the UE-1 initiates direct communication to the Application Layer ID-4 of the UE-2, and the UE-1 determines to update the direct communication flow identification corresponding to the QoS flow according to the new Application Layer QoS requirement and the established QoS flow QoS.

Assuming that the UE-1 determines that the quality of service of the established direct communication flow QoS flow #1 does not satisfy the new application layer service direct demand, the UE-1 establishes a new direct communication flow identifier QFI # 2.

As shown in fig. 7, an interaction flow diagram for establishing a new QoS flow between UE-1 and UE-2 provided in the embodiment of the present invention mainly includes the following steps:

step 700: UE-1 sends Update Request message (Link Update Request) to UE-2;

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

application Layer ID-3, Application Layer ID-4, UE-1V 2X Layer ID, UE-2V2X Layer ID, UE-1 Layer-2 ID, UE-2Layer-2 ID, QFI #2 and QFI #2 correspond to PC5 QoS parameter.

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 FIG. 8, in order to establish a pre-and post-comparison diagram of QoS Flow #2, UE-1 and UE-2 establish 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 show that two PCs 5 unity links exist between UE-1 and UE-2 at the same time, but shows a front-back comparison diagram of QoS Flow #2 establishment between UE-1 and UE-2.

Next, an update method corresponding to the second possible case will be described in embodiment 3.

Example 3: reusing the established QoS Flow;

Assuming that UE-1 determines that the quality of service of the established QoS Flow #1 meets the new Application Layer service direct connection requirement, UE-1 reuses the established direct connection communication Flow identifier QFI #1 and uses the QoS Flow #1 identified by QFI #1 to perform V2X message transmission between Application Layer ID-3 and Application Layer ID-4.

As shown in fig. 9, an interaction flow diagram of QoS flow #1 between UE-1 reuse and UE-2 mainly includes the following steps:

step 900: UE-1 sends 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 FIG. 10, for comparing before and after reusing QoS Flow #1, UE-1 and UE-2 transmit V2X message between Application Layer ID-3 and Application Layer ID-4 through QoS Flow # 1.

It should be noted that fig. 10 does not show two PC5 unique links existing between UE-1 and UE-2 at the same time, but shows a front-back comparison diagram of reusing QoS Flow #1 between UE-1 and UE-2.

In the above embodiment 1-embodiment 3, for the interaction mode between the UE-1 and the UE-2 corresponding to the other application layer identifiers that the UE-2 feeds back to the UE-1 and that the other application layer identifiers that the UE-2 supports itself correspond to, an explanation is provided below by the embodiment 4-embodiment 6 on the interaction flow of establishing the PC5 unique link and the QoS flow and updating the QoS flow between the UE-1 and the UE-2 corresponding to the other application layer identifiers that the UE-2 does not feed back to the UE-1:

example 4: establishing a PC5 unified link and QoS flow between UE-1 and UE-2;

the steps of UE-1 and UE-2 establishing the PC5 unique link and QoS flow may refer to the specific steps of embodiment 1, except that the direct communication response message fed back by UE-2 to UE-1 does not include other Application Layer identifiers supported by UE-2, i.e., does not include Application Layer ID-4.

After the establishment of PC5 unique link and PC5 QoS Flow #1 between UE-1 and UE-2 is completed, when UE-1 has a new application layer QoS requirement, for example: the Application Layer ID-3 of the UE-1 initiates a direct communication request message for the Application Layer ID-4, and because the UE-2 does not feed back other Application Layer identifications supported by the UE-1 to the UE-1, the UE-1 cannot determine a receiving terminal corresponding to the Application Layer ID-4, and the UE-1 needs to send the direct communication request message in a broadcasting mode.

It should be noted that, before broadcasting a new direct communication request message, the UE-1 establishes a new direct communication stream identifier according to a new application layer quality of service requirement, and places the newly established direct communication stream identifier in the direct communication request message to be broadcasted.

After receiving a new direct communication request message broadcasted by the UE-1, the UE-2 determines that a PC5 unique link has been established between the UE-2 and the UE-1, and the UE-2 determines that the UE-2 supports an application layer identifier requested by the UE-1, so that the UE-2 determines a direct communication stream identifier according to a QoS parameter included in the new direct communication request message and the service quality of the established direct communication stream identifier.

The UE-2 determines the direct communication stream identifier according to the QoS parameter contained in the new direct communication request message and the QoS of the established direct communication stream identifier, and has two possible situations, wherein the first possible situation is that the UE-2 determines that the QoS parameter contained in the new direct communication request message is not satisfied on a PC5 unique link between the UE-1 and the UE-2, and the UE-2 feeds back the direct communication stream identifier contained in the direct communication request message to the UE-1; another possible scenario is that UE-2 determines that the PC5 unique link between UE-1 contains a QoS flow corresponding to the QoS parameter that satisfies the new direct communication request message, such as the established QoS flow #1, and UE-2 reuses QoS flow #1 and feeds back the identifier QF #1 of QoS flow #1 to UE-1;

the following is introduced by way of updating corresponding to the first possible case of embodiment 5.

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

before the Application Layer ID-3 of the UE-1 initiates direct communication to the Application Layer ID-4, the UE-1 establishes a new direct communication stream identifier according to the new Application Layer service quality requirement. Wherein, the Application Layer ID-4 is the Application Layer identification of the opposite end of the new direct communication connection to be established by the UE-1. As shown in fig. 11, an interactive flow diagram of UE-1 establishing a new QoS flow with an opposite end according to a new application layer quality of service requirement mainly includes the following steps:

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

wherein, the direct communication request message includes UE-1V 2X Layer ID of UE-1 and target Application Layer identification Application Layer ID-4, and the direct communication request message further includes but is not limited to part 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 PF2# 2.

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

after receiving the new direct communication request message broadcast by the UE-1, the UE-2 determines that the UE-2 supports the Application Layer ID-4, and the UE-2 determines that a PC5 unique link is established with the UE-1, so that a new PC5 unique link is not needed.

UE-2 determines whether the established QoS flow can be reused according to the new application layer QoS requirement (PC 5 QoS parameter corresponding to PF2# 2) contained in the direct communication request message and the QoS of the established QoS flow.

If the established QoS flow meets the PC5 QoS parameter corresponding to PF2#2, reusing the established QoS flow, otherwise, determining to establish the QoS flow identified by QFI #2 with the UE-1.

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

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

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

UE-1 establishes QoS Flow #2 for the transfer of V2X messages between Application LayerID-3 and Application LayerID-4 of UE-2.

It should be noted that fig. 11 does not show that two PCs 5 unity links exist between UE-1 and UE-2 at the same time, but shows a front-back comparison diagram of QoS Flow #2 establishment between UE-1 and UE-2.

The following describes an interactive procedure for reusing the established direct communication stream by UE-1 and UE-2 by using embodiment 6:

example 6: reusing the established direct connection communication stream;

before the Application Layer ID-3 of the UE-1 initiates direct communication to the Application Layer ID-4, the UE-1 establishes a new direct communication stream identifier according to the new Application Layer service quality requirement. Wherein, the Application Layer ID-4 is the Application Layer identification of the opposite end of the new direct communication connection to be established by the UE-1. As shown in fig. 12, an interactive flow diagram of UE-1 reusing an established QoS flow according to a new application layer QoS requirement mainly includes the following steps:

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

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

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

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

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

It should be noted that fig. 12 does not show two PC5 unique links existing between UE-1 and UE-2 at the same time, but shows a front-back comparison diagram of reusing QoS Flow #1 between UE-1 and UE-2.

Based on the same inventive concept, the embodiment of the present invention further provides a sending terminal for direct communication, and as the device is the sending terminal in the system for direct communication in the embodiment of the present invention, and the principle of the receiving terminal for solving the problem is similar to that of the method, the implementation of the receiving terminal may refer to the implementation of the method, and repeated details are not repeated.

As shown in fig. 13, a transmitting terminal for a first direct communication according to an embodiment of the present invention 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 in performing operations. The transceiver 1302 is used to receive and transmit data under the control of the processor 1300.

The bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by the processor 1300 and various circuits of the memory represented by the memory 1301 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an 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 in performing operations.

The processes disclosed in the embodiments of the present invention may be implemented in the processor 1300 or implemented by the processor 1300. In implementation, the steps of the signal processing flow may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 1300. 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, discrete gate or transistor logic, discrete hardware components, or the like that implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 1301, and the processor 1300 reads information in the memory 1301 and completes the steps of the signal processing flow in combination with hardware thereof.

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

sending a direct connection communication request message;

establishing direct communication connection with the receiving terminal;

Optionally, the identifier of the internet of vehicles layer of the sending terminal corresponds to a plurality of application layer identifiers of the sending terminal; and the vehicle networking layer identification of the receiving terminal corresponds to the plurality of application layer identifications of the receiving terminal.

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

Optionally, the direct connection communication response message further includes an 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 identification requested by the sending terminal and other application layer identifications supported by the receiving terminal.

Optionally, the processor 1300 is further configured to:

establishing a direct communication flow with the receiving terminal.

Optionally, the processor 1300 is further configured to:

determining that a new application layer service quality requirement exists;

sending an 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:

determining that a new application layer service quality requirement exists;

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, a schematic structural diagram of another sending terminal for direct communication according to an embodiment of the present invention includes: first transmitting module 1400, first receiving module 1401, and first processing module 1402:

first transmitting module 1400: for sending a direct communication request message;

the first receiving module 1401: the system comprises a receiving terminal, a direct communication server and a server, wherein the receiving terminal is used for receiving a direct communication response message fed back by the receiving terminal;

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

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

establishing a direct communication flow with the receiving terminal.

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

determining that a new application layer service quality requirement exists;

sending an 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:

determining that a new application layer service quality requirement exists;

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 present invention further provides a receiving terminal for direct communication, and as the device is the receiving terminal in the system for direct communication according to the embodiment of the present invention, and the principle of the receiving terminal for solving the problem is similar to that of the method, the implementation of the receiving terminal may refer to the implementation of the method, and repeated details are not repeated.

As shown in fig. 15, a receiving terminal of a first direct communication according to an embodiment of the present invention 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 may store data used by the processor 1500 in 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, with one or more processors, represented by processor 1500, and various circuits of memory, represented by memory 1501, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The processor 1500 is responsible for managing the bus architecture and general processing, and the memory 1501 may store data used by the processor 1500 in performing operations.

The processes disclosed in the embodiments of the present invention can be applied to the processor 1500, or implemented by the processor 1500. In implementation, the steps of the signal processing flow may be implemented by integrated logic circuits in hardware or instructions in software in the processor 1500. 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, discrete gate or transistor logic, discrete hardware components, or any combination thereof that may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. 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 the hardware thereof.

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;

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:

feeding back an update response message to the sending terminal;

Optionally, the processor 1500 is further configured to:

after establishing direct communication connection with the sending terminal, receiving a direct communication request message broadcast by the sending terminal; the direct connection communication request message comprises an application layer identifier of the sending terminal, a vehicle networking layer identifier of the sending terminal, a new target application layer identifier, a new direct connection communication stream identifier and a service quality parameter corresponding to a direct connection communication stream identifier;

after determining that the target application layer identifier is an application layer identifier supported by the target application layer identifier, sending a direct communication response message to the sending terminal; wherein the direct communication response message includes an internet layer identifier and a direct communication stream identifier of the receiving terminal.

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, a schematic structural diagram of another receiving terminal for direct communication according to an embodiment of the present invention includes: the second sending module 1600, the second receiving module 1601, and the second processing module 1602:

the second sending module 1600: the system comprises a receiving terminal, a sending terminal and a sending terminal, wherein the receiving terminal is used for receiving a fixed direct connection communication request message sent by the sending terminal;

the second receiving module 1601: the system comprises a sending terminal and a receiving terminal, wherein the sending terminal is used for sending a direct communication response message to the sending terminal;

the second processing module 1602: the system comprises a server and a sending terminal, wherein the server is used for establishing 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:

feeding back 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 the present invention further provides a method for direct communication, and since the method corresponds to the method for the sending terminal for direct communication in the embodiment of the present invention, and the principle of the method for solving the problem is similar to that of the sending terminal, the implementation of the method can refer to the implementation of the sending terminal, and repeated details are not repeated.

As shown in fig. 17, a flowchart of a method for direct communication according to an embodiment of the present invention specifically includes the following steps:

step 1700, a sending terminal sends a direct connection communication request message;

step 1701, the sending terminal receives the direct connection communication response message fed back by the receiving terminal;

1702, establishing a direct connection communication between the sending terminal and the receiving terminal;

Optionally, the direct connection communication response message further includes:

and receiving the application layer identification of the terminal.

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

Optionally, the establishing, by the sending terminal, a direct connection communication connection with the receiving terminal further includes:

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

the sending terminal sends an updating request message;

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

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

Optionally, the determining, by the sending terminal, the direct connection communication stream identifier corresponding to the new application layer quality of service requirement according to the new application layer quality of service requirement and the established quality of service of the direct connection communication stream includes:

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 connection communication response message sent by the receiving terminal, the method further includes:

Based on the same inventive concept, the embodiment of the present invention further provides a method for direct communication, and since the method corresponds to the method for the receiving terminal for direct communication in the embodiment of the present invention, and the principle of the method for solving the problem is similar to that of the receiving terminal, the implementation of the method can refer to the implementation of the receiving terminal, and repeated details are not repeated.

As shown in fig. 18, a flowchart of a method for direct communication according to an embodiment of the present invention specifically includes the following steps:

1800, a receiving terminal receives a fixed direct connection communication request message sent by a 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 connection communication request message contains the vehicle networking layer identification of the sending terminal; and the direct connection communication response message contains the vehicle networking layer identification of the receiving terminal.

and receiving the application layer identification of the terminal.

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

Optionally, the establishing, by the receiving terminal, a direct connection communication connection with the sending terminal further includes:

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

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

Optionally, the determining, by the receiving terminal, a direct communication flow identifier includes:

Optionally, the determining, by the receiving terminal, a direct connection communication stream identifier according to the quality of service parameter in the direct connection communication request message broadcast by the sending terminal and the quality of service of the established direct connection communication stream includes:

The embodiment of the present invention further provides a computer-readable non-volatile storage medium, which includes a program code, and when the program code runs on a computing terminal, the program code is configured to enable the computing terminal to execute the steps of the method for direct communication according to the embodiment of the present invention.

The present application is described above with reference to block diagrams and/or flowchart illustrations of methods, apparatus (systems) and/or computer program products according to embodiments of the application. It will be understood that one block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, and/or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer and/or other programmable data processing apparatus, create means for implementing the functions/acts specified in the block diagrams and/or flowchart block or blocks.

Accordingly, the subject application may also be embodied in hardware and/or in software (including firmware, resident software, micro-code, etc.). Furthermore, the present application may take the form of a computer program product on a computer-usable or computer-readable storage medium having computer-usable or computer-readable program code embodied in the medium for use by or in connection with an instruction execution system. In the context of this application, a computer-usable or computer-readable medium may be any medium that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A method for direct communication, the method comprising:

a sending terminal sends a direct connection communication request message;

the sending terminal sends an updating request message;

the sending terminal receives the update response message fed back by the receiving terminal; wherein, the direct connection communication request message comprises the vehicle networking layer identifier and the target application layer identifier of the sending terminal; the direct communication response message comprises the vehicle networking layer identification of the receiving terminal; wherein, the target application layer identification is the application layer identification of the receiving terminal; wherein, the update request message includes an application layer identifier of the sending terminal, an internet layer identifier of the sending terminal, one of other application layer identifiers supported by the receiving terminal, an internet layer identifier of the receiving terminal, and a direct connection communication stream identifier; the update response message includes an application layer identifier of the receiving terminal, a vehicle networking layer identifier of the receiving terminal, and the direct communication stream identifier; the vehicle networking layer identification of the sending terminal corresponds to a plurality of application layer identifications of the sending terminal; the vehicle networking layer identification of the receiving terminal corresponds to a plurality of application layer identifications of the receiving terminal; the identifier of the direct communication connection is a layer 2 identifier of the sending terminal and a layer 2 identifier of the receiving terminal; the vehicle networking layer identification of the sending terminal corresponds to the layer 2 identification of the sending terminal one by one; and the vehicle networking layer identification of the receiving terminal corresponds to the layer 2 identification of the receiving terminal one by one.

2. The method of claim 1, wherein the direct communication request message further comprises some or all of:

and the application layer identification, the direct connection communication stream identification and the service quality parameter corresponding to the direct connection communication stream of the sending terminal.

3. The method of claim 1, wherein the direct communication reply message further comprises:

and receiving the application layer identification of the terminal.

4. The method of claim 3, wherein the receiving the application layer identification of the terminal comprises:

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

5. The method of claim 1, wherein the sending terminal establishes a direct communication connection with the receiving terminal, further comprising:

6. The method of claim 1, before the sending terminal sends an update request message, further comprising:

7. The method of claim 6, wherein the determining, by the sending terminal, the direct communication flow identity corresponding to the update request message comprises:

8. The method of claim 7, wherein the determining, by the sending terminal, the direct connection traffic flow identifier corresponding to the new application layer quality of service requirement according to the new application layer quality of service requirement and the quality of service of the established direct connection traffic flow comprises:

9. The method of claim 1, wherein after the sending terminal establishes the direct communication connection with the receiving terminal, the method further comprises:

10. The method of claim 9, wherein if the target application layer id is an application layer id supported by the receiving terminal;

11. The method of claim 9, wherein after the sending terminal receives the direct communication response message sent by the receiving terminal, the method further comprises:

12. A method for direct communication, the method comprising:

the receiving terminal feeds back an updating response message to the sending terminal; wherein, the direct connection communication request message comprises the vehicle networking layer identifier and the target application layer identifier of the sending terminal; the direct communication response message comprises the vehicle networking layer identification of the receiving terminal; wherein, the target application layer identification is the application layer identification of the receiving terminal; wherein, the update request message includes an application layer identifier of the sending terminal, an internet layer identifier of the sending terminal, one of other application layer identifiers supported by the receiving terminal, an internet layer identifier of the receiving terminal, and a direct connection communication stream identifier; the update response message includes an application layer identifier of the receiving terminal, a vehicle networking layer identifier of the receiving terminal, and the direct communication stream identifier; the vehicle networking layer identification of the sending terminal corresponds to a plurality of application layer identifications of the sending terminal; the vehicle networking layer identification of the receiving terminal corresponds to a plurality of application layer identifications of the receiving terminal; the identifier of the direct communication connection is a layer 2 identifier of the sending terminal and a layer 2 identifier of the receiving terminal; the vehicle networking layer identification of the sending terminal corresponds to the layer 2 identification of the sending terminal one by one; and the vehicle networking layer identification of the receiving terminal corresponds to the layer 2 identification of the receiving terminal one by one.

13. The method of claim 12, wherein the direct communication request message further comprises some or all of:

14. The method of claim 12, wherein the direct communication reply message further comprises:

and receiving the application layer identification of the terminal.

15. The method of claim 14, wherein the receiving the application layer identification of the terminal comprises:

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

16. The method of claim 12, wherein the receiving terminal establishes a direct communication connection with the sending terminal, further comprising:

17. The method of claim 12, wherein after the receiving terminal establishes the direct communication connection with the sending terminal, further comprising:

18. The method of claim 17, wherein before the receiving terminal sends a direct communication response message to the sending terminal, further comprising:

19. The method of claim 18, wherein the receiving terminal determining a direct communication flow identification comprises:

20. The method of claim 19, wherein the receiving terminal determining a direct communication flow identity based on quality of service parameters in a direct communication request message broadcast by the sending terminal and quality of service with an established direct communication flow comprises:

21. A sending terminal for direct communication, the sending terminal comprising: a processor and a memory, wherein the memory stores program code that, when executed by the processor, causes the transmitting terminal to perform the following:

sending a direct connection communication request message;

establishing direct communication connection with the receiving terminal;

determining that a new application layer service quality requirement exists;

sending an update request message;

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

wherein, the direct connection communication request message comprises the vehicle networking layer identifier and the target application layer identifier of the sending terminal; the direct communication response message comprises the vehicle networking layer identification of the receiving terminal; wherein, the target application layer identification is the application layer identification of the receiving terminal; wherein, the update request message includes an application layer identifier of the sending terminal, an internet layer identifier of the sending terminal, one of other application layer identifiers supported by the receiving terminal, an internet layer identifier of the receiving terminal, and a direct connection communication stream identifier; the update response message includes an application layer identifier of the receiving terminal, a vehicle networking layer identifier of the receiving terminal, and the direct communication stream identifier; the vehicle networking layer identification of the sending terminal corresponds to a plurality of application layer identifications of the sending terminal; the vehicle networking layer identification of the receiving terminal corresponds to a plurality of application layer identifications of the receiving terminal; the identifier of the direct communication connection is a layer 2 identifier of the sending terminal and a layer 2 identifier of the receiving terminal; the vehicle networking layer identification of the sending terminal corresponds to the layer 2 identification of the sending terminal one by one; and the vehicle networking layer identification of the receiving terminal corresponds to the layer 2 identification of the receiving terminal one by one.

22. The sending terminal of claim 21, wherein the direct communication request message further comprises some or all of:

23. The sending terminal of claim 21, wherein the direct communication reply message further comprises an application layer identification of the receiving terminal.

24. The transmitting terminal of claim 23, wherein the application layer identification of the receiving terminal comprises the target application layer identification requested by the transmitting terminal; or the target application layer identification requested by the sending terminal and other application layer identifications supported by the receiving terminal.

25. The transmitting terminal of claim 21, wherein the processor is further configured to:

establishing a direct communication flow with the receiving terminal.

26. The transmitting terminal of claim 21, wherein the processor is further configured to:

27. The transmitting terminal of claim 26, wherein the processor is further configured to:

28. The transmitting terminal of claim 27, wherein the processor is further configured to:

29. The transmitting terminal of claim 21, wherein the processor is further configured to:

determining that a new application layer service quality requirement exists;

30. The transmitting terminal of claim 29, wherein the processor is further configured to:

31. The transmitting terminal of claim 29, wherein the processor is further configured to:

32. A receiving terminal for direct communication, the receiving terminal comprising: a processor and a memory, wherein the memory stores program code that, when executed by the processor, causes the receiving terminal to perform the following:

sending a direct communication response message to the sending terminal;

receiving an update request message sent by the sending terminal;

feeding back an update response message to the sending terminal;

33. The receiving terminal of claim 32, wherein the direct communication request message further comprises some or all of:

34. The receiving terminal of claim 32, wherein the direct communication reply message further comprises an application layer identification of the receiving terminal.

35. The receiving terminal of claim 32, wherein the application layer identification of the receiving terminal comprises the target application layer identification requested by the sending terminal; or the target application layer identification requested by the sending terminal and other application layer identifications supported by the receiving terminal.

36. The receiving terminal of claim 32, wherein the processor is further configured to:

37. The receiving terminal of claim 32, wherein the processor is further configured to:

38. The receiving terminal of claim 37, wherein the processor is further configured to:

39. The receiving terminal of claim 38, wherein the processor is further configured to:

40. The receiving terminal of claim 39, wherein the processor is further configured to: