CN117641250A

CN117641250A - Communication method and device

Info

Publication number: CN117641250A
Application number: CN202210951522.4A
Authority: CN
Inventors: 应江威
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2022-08-09
Filing date: 2022-08-09
Publication date: 2024-03-01

Abstract

The application relates to the technical field of communication, and provides a communication method and device for saving power consumption of terminal equipment. The application layer of the terminal equipment sends a V2X service type corresponding to a group to the V2X layer of the terminal equipment, and the terminal equipment belongs to the group; the V2X layer determines a first service quality parameter based on the V2X service type corresponding to the group; the V2X layer sends a first quality of service parameter to the access layer; the access layer determines a PC5DRX parameter of the group based on the first quality of service parameter, wherein the PC5DRX parameter is used for transmitting the service of the V2X service type corresponding to the group. The terminal equipment transmits the service of the V2X service type corresponding to the group based on the PC5DRX parameter of the group, and the terminal equipment can save power consumption through a DRX mechanism.

Description

Communication method and device

Technical Field

The embodiment of the application relates to the technical field of communication, in particular to a communication method and device.

Background

In multicast communication, a terminal device added to a multicast session in a group receives multicast data, and even if a plurality of terminal devices in the group are receiving the multicast data, a sender only needs to send one piece of data without copying the plurality of pieces of data. It can be seen that multicast communication can reduce redundant traffic, reduce hardware load, save network bandwidth, reduce network load, and the like.

With the development of communication technology, group communication is gradually applied to different scenes, for example, application scenes such as V2X communication, short-range service (Proximity Service), and the like, that is, group communication based on a PC5 interface (communication interface between terminal devices) is realized. In the group communication based on the PC5 interface, how to save the power consumption of the terminal devices in the group is a problem to be solved.

Disclosure of Invention

The embodiment of the application provides a communication method and device, which are used for saving the power consumption of terminal equipment.

In a first aspect, a communication method is provided, where the method may be performed by a terminal device, or may be a component applied in the terminal device, such as a chip, a processor, or the like. The following describes an example in which the execution subject is a terminal device. Firstly, an application layer of a terminal device sends a V2X service type corresponding to a group to a V2X layer of an Internet of vehicles of the terminal device, wherein the terminal device belongs to the group. And then, the V2X layer determines a first service quality parameter based on the V2X service type corresponding to the group. Next, the V2X layer sends the first quality of service parameter to an access layer of the terminal device. And then, the access layer determines a PC5 discontinuous reception DRX parameter of the group based on the first service quality parameter, wherein the PC5 DRX parameter is used for transmitting the service of the V2X service type corresponding to the group.

Based on the method, the terminal equipment can transmit the service of the V2X service type corresponding to the group based on the PC5 DRX parameter of the group, and DRX communication adopting a DRX mechanism is realized, so that the power consumption of the terminal equipment is saved. Further, each terminal device in the group can determine the PC5 DRX parameter by executing the above method, and since the V2X service types corresponding to the group are the same, the QoS parameters determined based on the same V2X service types may also be the same, and further the PC5 DRX parameters determined based on the same QoS parameters may also be the same, so that multicast communication can be better implemented in the group.

In one possible implementation, the method further includes: the V2X layer establishes a first PC5 qos flow based on the V2X service type corresponding to the group, where the PC5 DRX parameter of the group may be specifically used for the first PC5 qos flow to transmit a service of the V2X service type corresponding to the group. By establishing a quality of service flow for all V2X service types corresponding to the group, services of the V2X service types corresponding to the group can be rapidly transmitted.

In one possible implementation, the V2X service types corresponding to the group include at least two V2X service types; the first PC5 quality of service stream includes at least one PC5 quality of service stream.

In one possible implementation, the establishing, by the V2X layer, a first PC5 quality of service flow based on the V2X service type corresponding to the group includes: and the V2X layer establishes a PC5 service quality stream for each V2X service type in the V2X service types corresponding to the group. I.e. one V2X traffic type corresponds to one PC5 quality of service stream. And establishing a service quality stream for each V2X service type, and transmitting the services of different V2X service types through the corresponding service quality streams, so that the requirements of a plurality of V2X service types corresponding to groups with different service quality requirements can be better met. Meanwhile, through one-to-one establishment, the transmission of the V2X service can be finely controlled (the control of the QoS flow is equivalent to the control of a single V2X service type).

In one possible implementation, the establishing, by the V2X layer, a first PC5 quality of service flow based on the V2X service type corresponding to the group includes: and the V2X layer establishes a PC5 service quality stream for each type of V2X service type in the V2X service types corresponding to the group. I.e. one class of V2X traffic type corresponds to one PC5 quality of service flow. The V2X service types can be divided into several classes according to different parameters, for example, the V2X service types are divided according to service quality parameters, a service quality flow can be established for each class of V2X service types, and the services of different classes of V2X service types are transmitted through the service quality flows corresponding to the classes, so that the requirements of different service quality requirements of each class of V2X service types corresponding to the group can be better adapted. Meanwhile, compared with the method for establishing one service quality stream for each V2X service type, the method can avoid the establishment of excessive service quality streams, reduce complexity and save resources.

In one possible implementation, when a first V2X service type of the V2X service types corresponding to the group includes at least two V2X service types, the quality of service parameters of the at least two V2X service types of the first V2X service type are the same. For example, the classes of V2X service types are classified according to the quality of service parameters, and the V2X service types with the same quality of service parameters are classified as one class. Furthermore, the method can establish a service quality stream for the V2X service types with the same service quality parameters, and can better meet different service quality requirements of the V2X service types corresponding to the groups.

In one possible implementation, the method further includes: and the V2X layer establishes a second PC5 service quality stream based on the interested V2X service type, and the PC5 DRX parameter of the group is specifically used for transmitting the service of the V2X service type corresponding to the group by the second PC5 service quality stream. Wherein the V2X service type corresponding to the group includes an interesting V2X service type of the terminal device. The second PC5 qos flow established based on the V2X service type of interest of the terminal device is usually data-transmitted, and unnecessary establishment of the PC5 qos flow can be avoided.

In one possible implementation, the method further includes: the access layer receives a first indication from the V2X layer indicating a PC5 DRX parameter for determining the group based on the first quality of service parameter. Furthermore, the access layer determines a PC5 discontinuous reception DRX parameter of the group based on the first quality of service parameter based on the first indication. By means of the first indication, the access layer can determine the PC5 DRX parameters more accurately.

In one possible implementation, the determining, by the V2X layer, a first quality of service parameter based on the V2X service type corresponding to the group includes: the V2X layer determines the first quality of service parameter based on a mapping relation between a V2X service type and a quality of service parameter and the V2X service type corresponding to the group.

In one possible implementation, the V2X layer determines, based on the V2X service type corresponding to the group, a first quality of service parameter if it is determined that the V2X service type corresponding to the group does not include a non-DRX service type. Because the group communication in the group cannot adopt the DRX mechanism under the condition that the V2X service type corresponding to the group comprises the non-DRX service type, the implementation can avoid executing the related operation of determining the DRX parameter when the V2X service type corresponding to the group comprises the non-DRX service type, and avoid wasting resources.

In one possible implementation, whether the non-DRX traffic type is included in the V2X traffic type corresponding to the group may be determined based on a mapping relationship of the V2X traffic type and a value of a transmission configuration (Transmission profile, tx profile). The V2X layer determines that the V2X service type corresponding to the group does not include a non-DRX service type, which may specifically include: the V2X layer determines that the transmission configuration Tx profile corresponding to the V2X service type corresponding to the group has DRX values.

In a second aspect, a communication method is provided, where the method may be performed by a terminal device, or may be a component applied in the terminal device, such as a chip, a processor, or the like. The following describes an example in which the execution subject is a terminal device. Firstly, an application layer of a terminal device sends a second instruction to a V2X layer of the Internet of vehicles of the terminal device, wherein the second instruction is used for instructing the terminal device to carry out group communication in a group, and the terminal device belongs to the group. And then, the V2X layer sends the PC5 discontinuous reception DRX parameter of the group or the service quality parameter of the group to the access layer of the terminal equipment based on the second indication, wherein the service quality parameter is used for determining the PC5 DRX parameter of the group, and the PC5 DRX parameter is used for transmitting the service of the V2X service type corresponding to the group.

In one possible implementation, the method further includes: the access layer receiving the quality of service parameters from the V2X layer; the access layer determines the PC5 DRX parameter based on the quality of service parameter.

In one possible implementation, the method further includes: the application layer sends the interesting V2X service types of the terminal equipment to the V2X layer; and the V2X layer establishes a PC5 service quality stream based on the interested V2X service type, and the PC5 DRX parameter is specifically used for transmitting the service of the V2X service type corresponding to the group by the PC5 service quality stream. The second PC5 qos flow established based on the V2X service type of interest of the terminal device is usually data-transmitted, and unnecessary establishment of the PC5 qos flow can be avoided.

In one possible implementation, the method further includes: the V2X layer receives a PC5 DRX parameter of the group or a quality of service parameter of the group from a policy control network element.

In one possible implementation, the V2X layer sends, based on the second indication, a PC5 discontinuous reception DRX parameter of the group or a quality of service parameter of the group to an access layer of the terminal device, where it is determined that the V2X service type corresponding to the group does not include a non-DRX service type. Because the group communication in the group cannot adopt the DRX mechanism under the condition that the V2X service type corresponding to the group comprises the non-DRX service type, the implementation can avoid executing the related operation of determining the DRX parameter when the V2X service type corresponding to the group comprises the non-DRX service type, and avoid wasting resources.

In one possible implementation, whether the non-DRX traffic type is included in the V2X traffic type corresponding to the group may be determined based on a mapping relationship of the V2X traffic type and a value of Tx profile. The V2X layer determines that the V2X service type corresponding to the group does not include a non-DRX service type, which may specifically include that the V2X layer determines that values of a transmission configuration Tx profile corresponding to the V2X service type corresponding to the group are all non-DRX.

In one possible implementation, the second indication includes an identification of the group.

In a third aspect, there is provided a communications device having functionality to implement any one of the above aspects and any one of the possible implementations of any one of the aspects. These functions may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software includes one or more functional modules corresponding to the functions described above.

In a fourth aspect, there is provided a communications apparatus comprising a processor, optionally further comprising a memory; the processor and the memory are coupled; the memory is used for storing a computer program or instructions; the processor is configured to execute part or all of the computer program or instructions in the memory, which when executed, is configured to implement the functions in the method of any one of the above aspects and any one of the possible implementations of any one of the above aspects.

In one possible implementation, the apparatus may further include a transceiver for transmitting the signal processed by the processor or receiving a signal input to the processor. The transceiver may perform the transmitting or receiving actions of any aspect and any possible implementation of any aspect.

In a fifth aspect, the present application provides a chip system comprising one or more processors (which may also be referred to as processing circuits) electrically coupled between the processors and a memory (which may also be referred to as storage medium); the memory may or may not be located in the chip system; the memory is used for storing a computer program or instructions; the processor is configured to execute part or all of the computer program or instructions in the memory, which when executed, is configured to implement the functions in the method of any one of the above aspects and any one of the possible implementations of any one of the above aspects.

In one possible implementation, the chip system may further include an input/output interface (may also be referred to as a communication interface), which is configured to output a signal processed by the processor or receive a signal input to the processor. The input-output interface may perform the sending or receiving actions of any aspect and any possible implementation of any aspect. Specifically, the output interface performs a transmission action, and the input interface performs a reception action.

In one possible implementation, the chip system may be formed of a chip, or may include a chip and other discrete devices.

In a sixth aspect, there is provided a computer readable storage medium storing a computer program comprising instructions for implementing the functions of any aspect and any possible implementation of any aspect.

Alternatively, a computer readable storage medium storing a computer program which, when executed by a computer, may cause the computer to perform any of the above aspects and any possible implementation of the method of any of the above aspects.

In a seventh aspect, there is provided a computer program product comprising: computer program code which, when run on a computer, causes the computer to perform the method of any one of the above aspects and any one of the possible implementations of any one of the above aspects.

Technical effects of the third aspect to the seventh aspect described above may be referred to the descriptions in the first aspect to the second aspect, and the repetition is not repeated.

Drawings

FIG. 1a is a schematic diagram of a communication system;

FIG. 1b is a schematic diagram of one possible communication system configuration provided in an embodiment of the present application;

Fig. 2 is a flow chart of a method for transmitting V2X service by a terminal device;

FIG. 3 is a schematic flow chart of one possible communication method provided in an embodiment of the present application;

FIG. 4 is a schematic flow chart of one possible communication method provided in an embodiment of the present application;

FIG. 5 is a schematic flow chart of one possible communication method provided in an embodiment of the present application;

FIG. 6 is a schematic flow chart of one possible communication method provided in an embodiment of the present application;

FIG. 7 is a schematic flow chart of one possible communication method provided in an embodiment of the present application;

FIG. 8 is a schematic flow chart of one possible communication method provided in an embodiment of the present application;

FIG. 9 is a schematic flow chart of one possible communication method provided in an embodiment of the present application;

FIG. 10 is a schematic diagram of one possible communication device provided in an embodiment of the present application;

fig. 11 is a schematic structural diagram of a possible communication device provided in an embodiment of the present application.

Detailed Description

The technical solution of the embodiment of the application can be applied to various communication systems, for example: global system for mobile communications (global system for mobile communications, GSM), code division multiple access (code division multiple access, CDMA), wideband code division multiple access (wideband code division multiple access, WCDMA) systems, general packet radio service (general packet radio service, GPRS), long term evolution (long term evolution, LTE) systems, LTE frequency division duplex (frequency division duplex, FDD) systems, LTE time division duplex (time division duplex, TDD), universal mobile telecommunications system (universal mobile telecommunication system, UMTS), worldwide interoperability for microwave access (worldwide interoperability for microwave access, WIMAX) communication systems, fifth generation (5th generation,5G) systems or New Radio (NR), or applications in future communication systems or other similar communication systems, next generation wireless local area network systems, etc.

In addition, the technical scheme provided by the embodiment of the application can be applied to Side Link (SL) communication. The Sidelink (SL) may also be referred to as a side link, a direct link, an edge link, or a secondary link, etc. SL communication may also be referred to as PC5 interface communication. The side-link may be used in a variety of applications, such as a cellular communication scenario, a device-to-device (D2D) communication scenario, and a car networking (vehicle to everything, V2X) scenario.

Illustratively, D2D may be D2D in a long term evolution (long term evolution, LTE) communication system, D2D in a New Radio (NR) communication system, or D2D in other communication systems that may occur as technology advances.

Similarly, V2X may be LTE V2X, NR V2X, or V2X in other communication systems that may occur with the development of technology.

By way of example, V2X scenes may include, but are not limited to, any of the following systems: vehicle-to-vehicle communication (vehicle to vehicle, V2V), vehicle-to-person communication (vehicle to pedestrian, V2P)/P2V, vehicle-to-network (vehicle to network, V2N) communication, person-to-person communication (pedestrian to pedestrian, P2P), and vehicle-to-infrastructure communication (vehicle to infrastructure, V2I), and the like. Wherein both participants of V2V are terminal devices. V2V may be used as a reminder for information interaction between vehicles, the most typical application being for an inter-vehicle collision avoidance safety system. Both participants of the V2P/P2V are terminal devices. V2P/P2V may be used to provide safety warnings to pedestrians or non-vehicles on the road. One participant of V2N is a terminal device and the other participant is a service entity. V2N is the most widely used form of internet of vehicles at present, and its main function is to connect the vehicle to the cloud server through the mobile network, so as to provide functions of navigation, entertainment, anti-theft, etc. through the cloud server. Both participants of the P2P are terminal devices. One participant in V2I is a terminal device and the other participant is an infrastructure (or a road facility). The V2I may be used as a communication between a vehicle and an infrastructure, for example, the infrastructure may be a road, a traffic light, a road barrier, etc., and road management information such as a timing of a traffic light signal may be acquired.

The embodiment of the application can also be applied to a short-distance Service (Proximity Service) scene or a short-distance-based Service (Proximity-based Service) scene, without limitation.

The embodiment of the application can be applied to a communication system shown below, without limitation.

Fig. 1a shows a schematic diagram of a communication system. As shown in fig. 1a, the communication system 100 includes: network devices and terminal devices (such as V2X UE1 and V2X UE 2). Further, an application server is also included in the communication system 100.

The terminal device, which may be referred to as a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), etc., is a device that provides voice or data connectivity to a user, and may also be an internet of things device. For example, the terminal device includes a handheld device having a wireless connection function, an in-vehicle device, and the like. The terminal device may be: a mobile phone, a tablet, a laptop, a palmtop, a mobile internet device (mobile internet device, MID), a wearable device (e.g., a smartwatch, a smartband, a pedometer, etc.), a vehicle-mounted device (e.g., an automobile, a bicycle, an electric car, an airplane, a ship, a train, a high-speed rail, etc.), a Virtual Reality (VR) device, an augmented reality (augmented reality, AR) device, a wireless terminal in an industrial control (industrial control), a smart home device (e.g., a refrigerator, a television, an air conditioner, an electric meter, etc.), a smart robot, a workshop device, a wireless terminal in a drone (self driving), a wireless terminal in a teleoperation (remote medical surgery), a wireless terminal in a smart grid (smart grid), a wireless terminal in a transportation security (transportation safety), a wireless terminal in a smart city (smart city), or a wireless terminal in a smart home (smart home), a flying device (e.g., a smart robot, a hot balloon, an airplane, etc. In the embodiment of the present application, the devices for implementing the above functions are collectively described by taking a terminal device as an example. It should be understood that the terminal device in the embodiment of the present application may also refer to a chip in the terminal, a communication device having a D2D or V2X communication function, a unit or a module, and the like, such as an in-vehicle communication device, an in-vehicle communication module, or an in-vehicle communication chip, and the like. In fig. 1a, terminal devices V2X UE1 and V2X UE2 are shown as examples.

The network device is a device in a network for accessing a terminal device to a wireless network. The network device may be a node in a radio access network, also referred to as a base station, and also referred to as a radio access network (radio access network, RAN) node (or device). The network device may be operable to inter-convert the received air frames with Internet Protocol (IP) packets as a router between the terminal device and the rest of the access network, which may include an IP network. The network device may also coordinate attribute management for the air interface. For example, the network device may include an evolved Node B (NodeB) or an eNB or an e-NodeB, evolutional Node B) in a long term evolution (long term evolution, LTE) system or an evolved LTE system (LTE-Advanced, LTE-a), or may also include a next generation Node B (next generation Node B, gNB) in a New Radio (NR) system of a fifth generation mobile communication technology (5th generation,5G), or may also include a transmission receiving point (transmission reception point, TRP), a home base station (e.g., home evolved NodeB, or home Node B, HNB), a baseband unit (BBU), or a WiFi Access Point (AP), etc., and may also include a Centralized Unit (CU) and a Distributed Unit (DU) in a cloud access network (cloud radio access network, cloudRAN) system, which embodiments of the present application are not limited. As another example, a network device in V2X technology is a Road Side Unit (RSU), which may be a fixed infrastructure entity supporting V2X applications, and may exchange messages with other entities supporting V2X applications. In fig. 1a, a network device is shown as an example of a base station.

The communication system 100 includes two communication interfaces: a PC5 interface and a Uu interface.

Wherein the PC5 interface refers to a direct communication interface between a terminal device and a terminal device (e.g., V2X UE1 and V2X UE 2), and the direct communication link between the terminal device and the terminal device may be referred to as a Sidelink (SL) for communication between the terminal device and the terminal device. The side-link based communication may use at least one of the following channels: a physical side uplink shared channel (physical sidelink shared channel, PSSCH) for carrying data (data); a physical side-link control channel (physical sidelink control channel, PSCCH) for carrying side-link control information (sidelink control information, SCI), also known as scheduling assignment (scheduling assigment, SA).

The Uu interface is a communication interface between a terminal device and a network device (e.g., V2X UE1 and a network device, or V2X UE2 and a network device), and a communication link between a terminal device and a network device includes an Uplink (UL) and a Downlink (DL). Specifically, uu interface-based communication may include: the UE1 sends the data to the network device through the Uu interface, sends the data to the application server for processing through the network device, and then sends the processed data to the network device through the application server, and sends the processed data to the UE2 through the network device.

The Uu interface communication and the PC5 interface communication may be performed simultaneously using different frequency bands.

Fig. 1b shows a schematic diagram of another communication system. The system comprises: terminal devices (e.g., UE a, UE B, UE C, UE D), access network devices, core network portions. Optionally, the system further comprises a Data Network (DN). The terminal communicates with the core network part through the access network device, and the core network part communicates with the DN.

Terminal devices (e.g., UE a, UE B, UE C, UE D) communicate with each other via a PC5 interface. The terminal equipment and the RAN communicate through a Uu interface.

The V2X application layers of the terminal equipment communicate through a V5 interface, and the V5 interface is a V2X application layer logic interface between the terminal equipment.

The V2X application layer of the terminal equipment and the V2X application server communicate through a V1 interface, the V1 interface is a logic interface between the V2X application layer of the terminal equipment and the V2X application server, and in fact, the V2X application layer of the terminal equipment communicates with the V2X application server through a user plane path established between the UE and the network.

The following provides a brief description of the functionality of some of the network elements.

The terminal device and the access network device may refer to the description in fig. 1a, and the description is not repeated.

The data network DN can be used for deploying various services and can provide data and/or voice services for the terminal equipment. For example, the DN is a private network of an intelligent plant, the sensors installed in the plant of the intelligent plant may be terminal devices, the sensors and control servers are deployed in the DN, and the control servers may serve the sensors. The sensor may communicate with the control server, obtain instructions from the control server, transmit collected sensor data to the control server, etc., according to the instructions. For another example, DN is an internal office network of a company, where a mobile phone or a computer of an employee of the company may be a terminal device, and the mobile phone or the computer of the employee may access information, data resources, etc. on the internal office network of the company. In fig. 1b, the V2X application server is deployed in the DN.

The core network portion may include one or more of the following network elements:

the access management network element (may also be referred to as a mobility management network element) is a control plane network element provided by the operator network and is responsible for access control and mobility management of the terminal device accessing the operator network, for example, including mobility state management, allocation of a temporary identity of a user, authentication, user and other functions. In a 5G communication system, the access management network element may be an access and mobility management function (access and mobility management function, AMF) network element. In future communication systems, the access management network element may still be an AMF network element, or may have other names, which is not limited.

Session management network element is mainly responsible for session management in mobile network, such as session establishment, modification and release. Specific functions include assigning an IP address to a user, selecting a user plane network element that provides a message forwarding function, and the like. In a 5G communication system, the session management network element may be a session management function (session management function, SMF) network element. In future communication systems, the session management network element may still be an SMF network element, or may have other names, which is not limited.

And the user plane network element is responsible for forwarding and receiving user data in the terminal equipment. User data can be received from the data network and transmitted to the terminal equipment through the access network equipment; the user plane network element may also receive user data from the terminal device via the access network device and forward the user data to the data network. The transmission resources and scheduling functions in the user plane network element that serve the terminal device are managed and controlled by the SMF network element. In a 5G communication system, the user plane network element may be a user plane function (user plane function, UPF) network element. In future communication systems, the user plane network element may still be a UPF network element, or may have other names, which is not limited.

And the data management network element is used for generating authentication credentials, user identification processing (such as storing and managing the permanent identity of a user and the like), access control, subscription data management and the like. In a 5G communication system, the data management network element may be a unified data management (unified data management, UDM) network element. In future communication systems, the unified data management may still be a UDM network element, or may have other names, which is not limited.

The policy control network element mainly supports providing a unified policy framework to control network behavior, provides policy rules for a control layer network function, and is responsible for acquiring user subscription information related to policy decision. In a 4G communication system, the policy control network element may be a policy and charging rules function (policy and charging rules function, PCRF) network element. In a 5G communication system, the policy control network element may be a policy control function (policy control function, PCF) network element. In future communication systems, the policy control network element may still be a PCF network element, or may have other names, which is not limited.

The network storage network element can be used for providing a network element discovery function and providing network element information corresponding to the network element type based on the requests of other network elements. NRF also provides network element management services such as network element registration, update, deregistration, and network element state subscription and push. In a 5G communication system, the network storage element may be a network registration function (network repository function, NRF) element. In future communication systems, the network storage network element may still be an NRF network element, or may have other names, which is not limited.

The unified data storage network element is responsible for storing structured data information, including subscription information, policy information, and network data or service data defined by a standard format. In a 5G communication system, the unified data storage network element may be a unified data store (unified data repository, UDR). In future communication systems, the network element with the network opening function may still be a UDR network element, or may have other names, which is not limited.

It will be appreciated that the network elements or functions described above may be either network elements in a hardware device, software functions running on dedicated hardware, or virtualized functions instantiated on a platform (e.g., a cloud platform). In one possible implementation manner, the network element or the function may be implemented by one device, or may be implemented by a plurality of devices together, or may be a functional module in one device, which is not limited specifically.

In order to facilitate understanding of the embodiments of the present application, the application scenario and related terms of the present application are described below, and the network architecture and the service scenario described in the embodiments of the present application are for more clearly describing the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application, and those of ordinary skill in the art can know that, with the appearance of a new service scenario, the technical solutions provided by the embodiments of the present application are equally applicable to similar technical problems.

1. The DRX mechanism can enable the terminal equipment to periodically enter a sleep state (sleep mode) without monitoring; and when the terminal device needs to monitor, the terminal device wakes up (wake up) from a sleep state.

The DRX mechanism is implemented by setting DRX parameters. DRX parameters may include, but are not limited to, one or more of the following: a DRX cycle (cycle), a DRX Duration timer (on-Duration timer), a DRX inactivity timer (inactivity timer), etc.

2. Hierarchical structure of terminal equipment:

the terminal device may include an application layer (application layer), a V2X layer, and an access layer (AS). The application layer corresponds to a higher layer of an open system interconnection (open system interconnection, OSI) reference model, and provides various application services for users. The AS layer corresponds to the physical layer (also referred to AS L1 layer) and the data link layer (also referred to AS L2 layer) in the OSI reference model. The data link layer (L2 layer) includes: a service data adaptation protocol (service data adaptation protocol, SDAP) layer, a packet data convergence protocol (packet data convergence protocol, PDCP) layer, a radio link control (radio link control, RLC) layer, a medium access control (medium access control, MAC) layer. The physical layer (L1 layer) includes: physical (PHY) layer.

The V2X layer can receive the service requirement of the application layer, the V2X layer can also carry out interactive communication with the core network element, and the configuration information for V2X communication can be obtained. The V2X layer may establish Qos flows to transmit V2X traffic data based on configuration information, traffic demands from the application layer, and the like.

3. V2X service type (V2X service type)

The V2X service type is used to identify V2X services. The V2X service type is, for example, an anti-collision service, an inter-vehicle safe running service, a vehicle tracking service, a distributed environment notification service, a cooperative sensing message service, a global positioning system (global positioning system, GPS) correction service, an intersection safe service, a road hazard vehicle notification service, a road sign information notification service, a vehicle application abnormality reporting service, or the like.

Further, the V2X service types may be classified into several classes according to different parameters, for example, the V2X service types are classified according to the quality of service parameters, and the V2X service types with the same or similar quality of service parameters (the difference between the parameters is less than or equal to a set threshold) may be classified into one class.

Fig. 2 shows a flow diagram of a method for transmitting V2X services by a terminal device. The method can be executed by the terminal equipment or by a component in the terminal equipment, and is used for determining a PC5 DRX parameter (the PC5 DRX parameter can also be called SL DRX parameter) so as to realize DRX communication.

Step 201: the application layer transmits a V2X service type (service type) to the V2X layer.

Illustratively, the V2X traffic type is a V2X traffic type of interest for the terminal device.

For example, the application layer sends an identification of a V2X service type (service type) to the V2X layer. For another example, the application layer sends a V2X packet (data packet) to the V2X layer, where a field of the V2X packet carries an identifier of the V2X service type. For another example, the application layer may send a V2X packet to the V2X layer, and the format of the V2X packet may determine the V2X service type.

Step 202: the V2X layer determines QoS parameters for the PC5 quality of service flow based on the V2X traffic type from the application layer.

Alternatively, the V2X layer may establish a PC5 quality of service (quality of service, qoS) flow(s) based on the V2X traffic type from the application layer.

The QoS parameters may be determined based on how the V2X traffic type looks up the mapping relationship. For example, the V2X layer stores a mapping relationship between the V2X service type and the QoS parameter, and the V2X layer determines the corresponding QoS parameter based on the mapping relationship between the V2X service type and the QoS parameter and the V2X service type from the application layer.

Optionally, the V2X layer determines an L2 address (e.g., MAC address). For example, the V2X layer maintains a mapping relationship between V2X service types and L2 addresses, and the V2X layer may determine the L2 addresses based on the V2X service types from the application layer and the maintained mapping relationship between the V2X service types and the L2 addresses. Or the application layer sends the identification of the application layer to the V2X layer, and the V2X layer converts the identification of the application layer into an L2 address based on the identification of the application layer and a preset rule (or algorithm).

Step 203: the V2X layer sends QoS parameters to the AS layer.

Illustratively, the V2X layer sends QoS Flow ID(s) with an associated QoS parameter to the AS layer. I.e., each QoS Flow ID corresponds to a set of QoS parameters.

Optionally, the V2X layer may also send an L2 address to the AS layer, where the L2 address is used for the terminal device to communicate with other terminal devices.

Step 204: the AS layer determines DRX parameters for transmitting traffic of the V2X traffic type based on QoS parameters from the V2X layer.

Optionally, the AS layer configures a side-uplink radio bearer (SL radio bearer) based on the QoS parameters, qoS Flow ID(s), and L2 address from the V2X layer.

The AS layer may configure one SL radio bearer for each QoS Flow ID, or the AS layer may configure one SL radio bearer for multiple QoS Flow IDs.

If the SL DRX mechanism is determined to be on, the AS layer can determine PC5 DRX parameters according to QoS parameters. If the SL DRX mechanism is determined not to be started, the AS layer does not need to determine the PC5 DRX parameter according to the QoS parameter.

For PC5 Group communication, any Group member (i.e., terminal device) within the Group may determine the PC5 DRX parameters according to the communication flow as shown in fig. 2, and power consumption is saved by the DRX mechanism.

In the communication flow shown in fig. 2, the V2X layer determines QoS parameters based on the V2X traffic type of interest of the terminal device, and the AS layer determines PC5 DRX parameters based on the QoS parameters. The V2X service types of interest may be different for different Group members (i.e., terminal devices) in the Group, which results in different QoS parameters determined by different terminal devices in the Group, and thus different determined PC5 DRX parameters. This may result in different terminal devices in the group being in a dormant state and some being in an awake state, which may affect multicast communications.

Based on this, the present application further provides various communication schemes to ensure that the PC5 DRX parameters (PC 5 DRX parameters may also be referred to as SL DRX parameters) determined by different terminal devices in the group are the same to some extent.

The detailed description will be given next with reference to the accompanying drawings. Features or content identified in the drawings by dashed lines may be understood as optional operations or optional structures of embodiments of the present application. The details of the various embodiments/examples of the present application may be referred to each other.

Example 1:

fig. 3 shows a schematic flow chart of a possible communication method according to an embodiment of the present application, including the following steps:

step 301: and the application layer of the terminal equipment sends the V2X service type corresponding to the group to the V2X layer of the terminal equipment.

Correspondingly, the V2X layer receives the V2X service type corresponding to the group from the application layer.

Wherein the terminal devices belong to a group. Specifically, a plurality of terminal devices may be included in a group. Any terminal device in the group may perform the communication procedure of the present application. The group can be established dynamically or pre-configured, and the process of establishing the group is not limited in the application. For example, fleet travel requires the establishment of a fleet of vehicles, which may be pre-configured or dynamically established. In addition, the establishment and the control of the group can be performed by taking the server as a control center; the vehicles can also be established and controlled by PC5 interface communication or other short-distance communication modes, and vehicles (such as a head) in one group can be used as the controlled vehicles.

Illustratively, the group may also be referred to as an application layer group.

For example, after determining to establish a group, the application layer of the terminal device may actively send the V2X service type corresponding to the group to the V2X layer.

When the application layer sends the V2X service type corresponding to the group to the V2X layer, the method can be implemented in various manners. For example, the application layer sends an identification of a V2X service type (service type) to the V2X layer. For another example, the application layer sends a V2X data packet (packet) to the V2X layer, where a field of the V2X data packet carries an identifier of the V2X service type corresponding to the group.

The V2X service type corresponding to the group may include one V2X service type, or may include a plurality of V2X service types.

The V2X traffic type corresponding to the group can be understood as: all (or inherent) V2X traffic types for which the group corresponds.

The terminal device is provided with a V2X application program, the V2X application program has a function of establishing a group, and each function usable by the group can be regarded as a V2X service type, and the function usable by the group is the V2X service type corresponding to the group. The functions available to the group may be application-specific and may change somewhat as versions are upgraded. Alternatively, each function available in a V2X application may be considered a V2X service type. In particular, it may be decided by the application server or the management terminal (e.g., the head) of the group, which function or functions among the functions available in the V2X application are to be used as the functions available for the group when the group is established.

Step 302: the V2X layer determines a first quality of service parameter based on the V2X service type corresponding to the group.

The quality of service parameters may include, but are not limited to, one or more of the following: packet transmission bandwidth, rate, delay jitter, or packet error rate, etc.

Specifically, the first quality of service parameter in step 302 may be determined based on the manner in which the mapping relationship is found for the V2X service type corresponding to the group.

The V2X layer stores a mapping relationship between a V2X service type and a quality of service parameter, and the V2X layer determines the first quality of service parameter based on the mapping relationship between the V2X service type and the quality of service parameter and the V2X service type corresponding to the group. The mapping relationship between the V2X service type and the quality of service parameter may be sent to the terminal device by other network elements (e.g. PCF), for example, the mapping relationship between the V2X service type and the quality of service parameter may be included in the V2X configuration information, and the other network elements send the V2X configuration information to the terminal device and store the V2X configuration information on the terminal device.

For example, the mapping relationship between the V2X service type and the quality of service parameter is stored in other network elements (e.g., PCFs) except for the terminal device, where the terminal device (e.g., V2X layer of the terminal device) sends the V2X service type corresponding to the group to the other network elements, and the other network elements determine the first quality of service parameter based on the mapping relationship between the V2X service type and the quality of service parameter and the V2X service type corresponding to the group. The other network element sends the first quality of service parameter to the terminal device (e.g. the V2X layer of the terminal device).

It is noted that any V2X traffic type may determine a set of quality of service parameters that may include, but are not limited to, one or more of the following: packet transmission bandwidth, rate, delay jitter, packet error rate, etc. When the V2X service type corresponding to the group includes a plurality of V2X service types, a plurality of sets of quality of service parameters may be determined based on the V2X service type corresponding to the group, and at this time, the first quality of service parameter in step 302 may include a plurality of sets of quality of service parameters. The different sets of quality of service parameters may be partially or completely identical, or may be partially or completely different. It is obvious that the first quality of service parameter in step 302 may also be a set of quality of service parameters further determined based on the plurality of sets of quality of service parameters, i.e. the first quality of service parameter, and how to determine the first quality of service parameter based on the plurality of sets of quality of service parameters in particular may be performed in various manners, for example, by calculating an average value of the plurality of sets of quality of service parameters to obtain the first quality of service parameter, and for example, a minimum value or a maximum value of the plurality of sets of quality of service parameters is used as the first quality of service parameter without limitation.

Step 303: and the V2X layer sends the first quality of service parameter to an access layer of the terminal equipment.

Accordingly, the access layer receives the first quality of service parameter from the V2X layer.

Step 304: the access layer determines PC5 DRX parameters for the group based on the first quality of service parameter.

The PC5 DRX parameter is used for transmitting the service of the V2X service type corresponding to the group. The PC5 DRX parameters may include, but are not limited to, one or more of the following: a DRX cycle (cycle), a DRX Duration timer (on-Duration timer), a DRX inactivity timer (inactivity timer), etc.

Specifically, the PC5 DRX parameters in step 304 may be determined based on the first quality of service parameter in a manner that looks up the mapping relationship.

For example, the access layer maintains a mapping relationship between the quality of service parameter and the PC5 DRX parameter, and the access layer may determine the PC5 DRX parameter corresponding to the first quality of service parameter based on the mapping relationship between the quality of service parameter and the PC5 DRX parameter and the first quality of service parameter. Further, the access stratum may determine a PC5 DRX parameter of the group based on the PC5 DRX parameter corresponding to the first quality of service parameter. The mapping relationship between the quality of service parameter and the PC5 DRX parameter may be preconfigured (e.g. preconfigured at factory) on the terminal device or sent to the terminal device by other network elements (e.g. access network device or PCF). The access network device may send the mapping relation of the quality of service parameter and the PC5 DRX parameter to the terminal device through a broadcast message or radio resource control (radio resource control, RRC) signaling. For example, the mapping relationship between the quality of service parameter and the PC5 DRX parameter may be included in V2X configuration information, and other network elements (e.g., PCF or access network device) send the V2X configuration information to the terminal device and store the V2X configuration information on the terminal device.

For example, the mapping relation between the quality of service parameter and the PC5 DRX parameter is stored in other network elements (such as PCF or access network equipment) except for the terminal equipment, where the terminal equipment (such as an access layer of the terminal equipment) sends the first quality of service parameter to the other network elements, and the other network elements determine that the first quality of service parameter corresponds to the PC5 DRX parameter based on the mapping relation between the quality of service parameter and the PC5 DRX parameter and the first quality of service parameter. And the other network elements send the PC5 DRX parameters corresponding to the first quality of service parameters to terminal equipment (such as an access layer of the terminal equipment). Further, the access stratum may determine a PC5 DRX parameter of the group based on the PC5 DRX parameter corresponding to the first quality of service parameter.

It is noted that a set of quality of service parameters may determine a set of PC5 DRX parameters, including, but not limited to, one or more of the following: a DRX cycle (cycle), a DRX Duration timer (on-Duration timer), a DRX inactivity timer (inactivity timer), etc. When the first qos parameters include a set of qos parameters, the set of PC5 DRX parameters determined based on the set of qos parameters is the PC5 DRX parameters of the group. When the first quality of service parameter includes multiple sets of quality of service parameters, the PC5 DRX parameters corresponding to the first quality of service parameter may include multiple sets of PC5 DRX parameters, and further, based on the multiple sets of PC5 DRX parameters, the PC5 DRX parameters of the group are determined.

For example, for a DRX cycle (cycle), the minimum value may be selected among the DRX cycles in the plurality of sets of PC5DRX parameters as the DRX cycle in the PC5DRX parameters of the group; for a DRX Duration timer (e.g., on-Duration timer), a maximum value may be selected as the DRX Duration timer in the PC5DRX parameters of the group among the DRX Duration timers in the sets of PC5DRX parameters; for a DRX inactivity timer (e.g., inactivity timer), the maximum value of the DRX inactivity timers in the sets of PC5DRX parameters may be selected as the DRX inactivity timer in the sets of PC5DRX parameters.

It is understood that the present application is not limited to the rule of value of the above parameters. For example, for a DRX cycle (cycle), a maximum value among a plurality of values may be selected as the DRX cycle in the PC5DRX parameter of the group, and for a DRX Duration timer (on-Duration timer), a minimum value among a plurality of values may be selected as the DRX cycle in the PC5DRX parameter of the group; for a DRX inactivity timer (inactivity timer), a minimum value may be selected among a plurality of values as the DRX inactivity timer in the PC5DRX parameters of the group.

It is assumed that the first quality of service parameter comprises three sets of quality of service parameters, qoS parameter 1, qoS parameter 2, qoS parameter 3, respectively. The set of DRX parameters corresponding to QoS parameter 1 includes: the DRX period is 20ms, the DRX duration timer is 1ms, and the DRX inactivity timer is 2ms; the set of DRX parameters corresponding to QoS parameter 2 includes: the DRX period is 40ms, the DRX duration timer is 1ms, and the DRX inactivity timer is 4ms; the set of DRX parameters corresponding to QoS parameter 3 includes: the DRX cycle is 20ms, the DRX duration timer is 2ms, and the DRX inactivity timer is 4ms. Selecting a minimum value according to a DRX period, selecting a maximum value by a DRX duration timer, and selecting a rule of the maximum value by a DRX inactivity timer, wherein PC5DRX parameters of the group comprise: the DRX cycle is 20ms, the DRX duration timer is 2ms, and the DRX inactivity timer is 4ms.

In an alternative example, the method further includes: the V2X layer determines whether the V2X service type corresponding to the group comprises a non-DRX service type or not; when the V2X service type corresponding to the group does not include the non-DRX service type, executing the step 302, and further executing the step 303 and the step 304; or when the V2X service type corresponding to the group comprises a non-DRX service type, the DRX function is not started.

By determining whether the V2X service type corresponding to the group comprises the non-DRX service type, useless DRX parameters can be determined when the non-DRX service type is included, and resource waste caused by an invalid processing process can be avoided. In particular, since the group communication in the group cannot adopt the DRX mechanism in the case that the V2X service type corresponding to the group includes the non-DRX service type, the implementation can avoid performing the related operation of determining the DRX parameter when the V2X service type corresponding to the group includes the non-DRX service type, thereby avoiding resource waste.

Whether the V2X traffic type corresponding to the group includes the non-DRX traffic type may be determined based on a mapping relationship between the V2X traffic type and the Tx profile value, which may be specifically described with reference to step 402 in fig. 4.

Based on the example of fig. 3, the V2X layer may also establish a PC5 quality of service flow, and transmit the service of the V2X service type corresponding to the group through the established PC5 quality of service flow. In one example, the V2X layer may establish a PC5 quality of service flow based on the V2X traffic type for the group. By establishing a quality of service flow for all V2X service types corresponding to the group, services of the V2X service types corresponding to the group can be rapidly transmitted. In another example, the V2X layer may establish a PC5 quality of service flow based on the V2X traffic type of interest for the terminal device. The interested V2X service type belongs to the V2X service type corresponding to the group. The PC5 qos flows established based on the V2X service type of interest of the terminal device are usually data-transmitted, so that unnecessary establishment of the PC5 qos flows can be avoided.

For ease of distinction, a PC5 quality of service flow established based on a group-corresponding V2X traffic type is referred to as a first quality of service flow, and a PC5 quality of service flow established based on a V2X traffic type of interest is referred to as a second quality of service flow.

Example 1: and establishing a first PC5 service quality stream based on the V2X service type corresponding to the group by combining the V2X layer, and describing in detail.

Fig. 4 shows a schematic flow chart of another communication method according to an embodiment of the present application, including the following steps:

step 401: and the application layer of the terminal equipment sends the V2X service type corresponding to the group to the V2X layer of the terminal equipment.

The process of step 401 may refer to the description of step 301, and the detailed description will not be repeated.

Step 402: and the V2X layer determines that the V2X service type corresponding to the group does not comprise a non-DRX service type.

It should be noted that step 402 is an optional step, which may or may not be performed, and is not limited.

Specifically, when the V2X layer determines that the V2X service type corresponding to the group does not include the non-DRX service type, the following steps 403 to 405 are performed.

Whether the V2X service type corresponding to the group includes the non-DRX service type may be determined based on a mapping relationship between the V2X service type and a value of Tx profile.

It should be noted that, when the value of Tx profile is DRX, it indicates that the V2X traffic type is a DRX traffic type; when the value of the Tx profile is non-DRX, it indicates that the V2X traffic type is a non-DRX traffic type. When the value of the Tx profile of at least one V2X service type in the V2X service types corresponding to the group is non-DRX, determining that the V2X service types corresponding to the group comprise non-DRX service types; or when the Tx profile values of all V2X service types in the V2X service types corresponding to the group are DRX, it may be determined that the V2X service types corresponding to the group do not include the non-DRX service type.

As can be seen, the V2X layer determines that the V2X service type corresponding to the group does not include a non-DRX service type, and specifically, the V2X layer determines that the V2X service type corresponding to the group does not include a service type in which a transmission configuration Tx profile corresponding to the V2X service type is non-DRX. The V2X layer determines that the V2X service type corresponding to the group includes a non-DRX service type, and specifically, the V2X layer determines that the V2X service type corresponding to the group includes a service type in which a transmission configuration Tx profile corresponding to the V2X service type is non-DRX.

For example, the V2X layer may maintain a mapping relationship between the V2X traffic type and the value of Tx profile, and the V2X layer may determine whether the V2X traffic type corresponding to the group includes a non-DRX traffic type based on the mapping relationship between the V2X traffic type and the value of Tx profile. The mapping relationship between the V2X service type and the value of Tx profile may be preconfigured (e.g. preconfigured at factory) on the terminal device or sent to the terminal device by other network elements (e.g. access network device or PCF). The access network device may send the mapping relation between the quality of service parameter and the PC5 DRX parameter to the terminal device through a broadcast message or RRC signaling. For example, the mapping relationship between the V2X service type and the Tx profile value may be included in the V2X configuration information, and other network elements (e.g., PCF or access network device) send the V2X configuration information to the terminal device, and store the V2X configuration information on the terminal device.

For example, the mapping relation between the V2X service type and the Tx profile value is stored in other network elements (such as PCF or access network equipment) except for the terminal equipment, where the terminal equipment (such as the V2X layer of the terminal equipment) sends the V2X service type corresponding to the group to the other network elements, and the other network elements determine whether to include the result based on the mapping relation between the V2X service type and the Tx profile value and the V2X service type corresponding to the group. The other network element sends the result of whether this is included or not to the terminal device (e.g. the V2X layer of the terminal device).

Step 403: the V2X layer determines a first quality of service parameter based on the V2X service type corresponding to the group, and establishes a first PC5 quality of service flow based on the V2X service type corresponding to the group.

The process of determining the first quality of service parameter by the V2X layer based on the V2X service type corresponding to the group may refer to the description of step 302, and the description is not repeated.

When the V2X service type corresponding to the group includes a V2X service type, the first PC5 quality of service stream includes a PC5 quality of service stream. When the V2X service type corresponding to the group includes a plurality of V2X service types, the first PC5 quality of service flow includes one or more PC5 quality of service flows.

For example, the V2X layer establishes a PC5 quality of service flow for each V2X service type in the V2X service types corresponding to the group. The qos parameter corresponding to the V2X service type is the qos parameter of the PC5 qos flow. And establishing a service quality stream for each V2X service type, and transmitting the services of different V2X service types through the corresponding service quality streams, so that the requirements of a plurality of V2X service types corresponding to groups with different service quality requirements can be better met. Meanwhile, through one-to-one establishment, the transmission of the V2X service can be finely controlled (the control of the QoS flow is equivalent to the control of a single V2X service type).

Illustratively, the V2X layer establishes a PC5 quality of service flow for each of the V2X service types corresponding to the group. The service quality parameter corresponding to the V2X service type is the service quality parameter of the PC5 service quality flow. And establishing a service quality stream for each type of V2X service type, and transmitting the services of different types of V2X service types through the service quality streams corresponding to the types, so that the requirements of different service quality requirements of each type of V2X service types corresponding to the groups can be better met. Meanwhile, compared with the method for establishing one service quality stream for each V2X service type, the method can avoid the establishment of excessive service quality streams, reduce complexity and save resources.

For example, when a first V2X service type of the V2X service types corresponding to the group includes at least two V2X service types, quality of service parameters of the at least two V2X service types of the first V2X service type are the same or similar (a parameter difference is less than or equal to a set threshold). The V2X service types with the same service quality parameters are classified into one type, and a service quality flow is established for each type of V2X service type, so that the requirements of different service quality parameters of each type of V2X service type corresponding to the group can be better met.

Optionally, the V2X layer may also determine an L2 address (e.g., a MAC address), which L2 address is used for group communication by the terminal device. For example, the V2X layer maintains a mapping relationship between V2X service types and L2 addresses, and the V2X layer may determine the L2 addresses based on the V2X service types corresponding to the group from the application layer and the maintained mapping relationship between the V2X service types and the L2 addresses. Or, the application layer sends the group identifier to the V2X layer, and the V2X layer converts the group identifier into an L2 address of the group communication based on the group identifier and a preset rule (or algorithm).

The identity of each PC5 qos flow in the first PC5 qos flow and the corresponding qos parameters may be stored in the context of the PC5 qos flow. Optionally, the L2 address may also be saved in context.

It should be noted that, in step 403, the first quality of service parameter is determined based on the V2X service type corresponding to the group, and the first PC5 quality of service flow is established based on the V2X service type corresponding to the group, and the two actions may be performed without limitation, that is, the first PC5 quality of service flow may be established first, or the first quality of service parameter may be determined first.

Step 404: the V2X layer sends an identification of a first PC5 quality of service flow and a first quality of service parameter to an access layer of the terminal device.

Accordingly, the access layer receives the identity of the first PC5 quality of service flow and the first quality of service parameter from the V2X layer.

Specifically, the V2X layer sends, to the access layer, an identifier of each PC5 qos flow in the first PC5 qos flow and a qos parameter corresponding to each PC5 qos flow. Correspondingly, the access layer receives the identification of each PC5 qos flow in the first PC5 qos flows from the V2X layer, and the qos parameters corresponding to each PC5 qos flow.

Optionally, the V2X layer may also send the L2 address determined in step 403 to the access layer.

Step 405: the access layer determining PC5 DRX parameters of the group based on the first quality of service parameter; and configuring a side uplink radio bearer (SL radio) based on the first quality of service parameter from the V2X layer, an identification of the first PC5 quality of service flow (optionally including the L2 address).

The process of determining the PC5DRX parameters of the group based on the first quality of service parameter may refer to the description in step 304, and the description will not be repeated.

The access layer may configure one SL radio bearer for each QoS Flow ID, or the access layer may configure one SL radio bearer for multiple QoS Flow IDs. Belongs to the prior art and is not repeated.

It should be noted that the configuring and determining in step 405 may be performed without any limitation, that is, the configuring the side uplink radio bearer may be performed based on the first quality of service parameter from the V2X layer and the identification of the first PC5 quality of service flow (optionally including the L2 address), or the determining the PC5DRX parameter of the group based on the first quality of service parameter may be performed first.

It should be noted that when the V2X layer determines that the V2X service type corresponding to the group includes a non-DRX service type, the DRX mechanism is not required to be turned on (i.e., the DRX parameter is not required to be determined), and a PC5 qos flow is still required to be established to transmit the service of the V2X service type corresponding to the group.

In an alternative example, when the V2X layer determines that the V2X traffic type corresponding to the group includes a non-DRX traffic type, it may not be necessary to determine the DRX parameter. Steps 403 and 404 may still be performed without performing the step 405 of determining the PC5DRX parameters of the group based on the first quality of service parameter. The first PC5 qos flow is established based on the V2X service type corresponding to the group, and there may be some PC5 qos flows in the first PC5 qos flow without data transmission, so that the established part of the PC5 qos flow is unnecessary.

In an alternative example, when the V2X layer determines that the V2X traffic type corresponding to the group does not include the non-DRX traffic type, steps 403 to 405 of fig. 4 are performed. When the V2X layer determines that the V2X traffic type corresponding to the group includes a non-DRX traffic type, it may not be necessary to determine DRX parameters, and steps 403 to 405 are not necessary to be performed. The V2X layer may establish a second PC5 quality of service flow based on the V2X traffic type of interest of the terminal device, determining a second quality of service parameter. The second PC5 quality of service stream established based on the V2X traffic type of interest of the terminal device is typically data-transmitted. A detailed example is described below in connection with this process.

Fig. 5 shows a schematic flow chart of a possible communication method according to an embodiment of the present application, including the following steps:

step 501: and the application layer of the terminal equipment sends the V2X service type corresponding to the group and the interested V2X service type of the terminal equipment to the V2X layer of the terminal equipment.

Correspondingly, the V2X layer receives the V2X service type and the V2X service type of interest corresponding to the group from the application layer.

Wherein the interesting V2X service type belongs to the V2X service type corresponding to the group. The V2X traffic type of interest may be one or more of the group-corresponding V2X traffic types.

Wherein, the V2X service type corresponding to the group includes one or more of the following: anti-collision service, inter-vehicle safety driving service, vehicle tracking service, distributed environment notification service, cooperation perception message service, GPS correction service, crossroad safety service, road dangerous vehicle notification service, road sign information notification service, vehicle application abnormality reporting service and the like.

The V2X traffic type of interest may be inherent to the V2X application or the V2X traffic type of interest may be determined based on user preferences. The terminal device is provided with a V2X application program, and the user can operate in the V2X application program to select one or more V2X service types from the V2X service types corresponding to the group as the interesting V2X service type of the terminal device.

The process that the application layer of the terminal device sends the V2X service type corresponding to the group to the V2X layer of the terminal device may refer to the description in step 301, and the description is not repeated.

Specifically, the application layer may send the interesting V2X service type to the V2X layer in a plurality of implementation manners, for example, the application layer may send the identifier of the interesting V2X service type directly to the V2X layer. Or, for another example, the application layer sends a V2X data packet (packet) to the V2X layer, where a field of the V2X data packet carries an identifier of the V2X service type of interest. Or, the application layer indicates to the V2X layer which service type or types of the V2X service types corresponding to the group are the V2X service types of interest.

The V2X service type corresponding to the group and the V2X service type of interest may be sent in one message or may be sent in a different message.

Step 502: the V2X layer determines whether the V2X service type corresponding to the group includes a non-DRX service type.

The process of determining whether the V2X service type corresponding to the group includes the non-DRX service type by the V2X layer may refer to the description of step 402, and the description is not repeated.

Step 503: when the V2X layer determines that the non-DRX traffic type is not included, it determines to turn on the DRX function.

The DRX function may be specifically a service of a V2X service type corresponding to the transmission group using a DRX mechanism (or a PC5 DRX parameter).

Further, steps 5031 to 5033 may be performed.

Step 5031: the V2X layer establishes a first PC5 service quality stream based on the V2X service type corresponding to the group, and determines a first service quality parameter based on the V2X service type corresponding to the group.

Optionally, the V2X layer may also determine an L2 address (e.g., a MAC address), which L2 address is used for group communication by the terminal device.

The process of step 5031 may refer to the process of step 403, and will not be repeated.

Step 5032: the V2X layer sends an identification of a first PC5 quality of service flow and a first quality of service parameter to an access layer of the terminal device.

Optionally, the V2X layer may also send the L2 address determined in step 5031 to the access layer.

The process of step 5032 may refer to the process of step 404, and will not be repeated.

Step 5033: the access layer determining PC5 DRX parameters of the group based on the first quality of service parameter; and configuring a side uplink radio bearer (SL radio) based on the first quality of service parameter from the V2X layer, the first PC5 quality of service flow (optionally including the L2 address).

The PC5 DRX parameter of the group is specifically used for the first PC5 QoS stream to transmit the service of the V2X service type corresponding to the group. The process of determining the PC5 DRX parameters of the group based on the first quality of service parameter may refer to the description in step 304, and will not be repeated.

The process of step 5033 may refer to the process of step 405, and will not be repeated.

Step 504: when the V2X layer determines to include a non-DRX traffic type, it is determined not to turn on the DRX function.

The DRX function is not turned on, and specifically may be a service of a V2X service type corresponding to the transmission group without using a DRX mechanism (or a PC5 DRX parameter).

Further, the following steps 5041 to 5043 may be performed.

Step 5041: the V2X layer establishes a second PC5 service quality stream based on the V2X service type of interest of the terminal equipment, and determines a second service quality parameter based on the V2X service type of interest of the terminal equipment.

The process of establishing the second PC5 qos flow and determining the second qos parameter based on the V2X service type of interest may be similar to the process of establishing the first PC5 qos flow and determining the first qos parameter based on the V2X service type corresponding to the group.

Specifically, the second quality of service parameter in step 5041 may be determined based on the manner in which the V2X service type of interest of the terminal device looks up the mapping relationship.

The V2X layer stores a mapping relationship between a V2X service type and a quality of service parameter, and the V2X layer determines the second quality of service parameter based on the mapping relationship between the V2X service type and the quality of service parameter and the V2X service type of interest. The mapping relationship between the V2X service type and the quality of service parameter may be sent to the terminal device by other network elements (e.g., PCF).

For example, the mapping relationship between the V2X service type and the quality of service parameter is stored in other network elements (e.g. PCF) except for the terminal device, where the terminal device (e.g. V2X layer of the terminal device) sends the V2X service type of interest to the other network elements, and the other network elements determine the second quality of service parameter based on the mapping relationship between the V2X service type and the quality of service parameter and the V2X service type of interest. The other network element sends the second quality of service parameter to the terminal device (e.g. the V2X layer of the terminal device).

It is noted that any V2X traffic type may determine a set of quality of service parameters that may include, but are not limited to, one or more of the following: packet transmission bandwidth, rate, delay jitter, packet error rate, etc. When the V2X traffic type of interest comprises a V2X traffic type, a set of quality of service parameters may be determined based on the V2X traffic type of interest, at which point the second quality of service parameter in step 5041 may comprise a set of quality of service parameters. When the V2X traffic type of interest includes a plurality of V2X traffic types, a plurality of sets of quality of service parameters may be determined based on the V2X traffic type of interest, at which point the second quality of service parameter in step 5041 includes the plurality of sets of quality of service parameters. The different sets of quality of service parameters may be partially or completely identical, or may be partially or completely different. It is obvious that the second quality of service parameter in step 5041 may also be a set of quality of service parameters further determined based on the multiple sets of quality of service parameters, i.e. the second quality of service parameter, and how to determine the second quality of service parameter based on the multiple sets of quality of service parameters may be performed in various manners, for example, by calculating an average value of the multiple sets of quality of service parameters to obtain the second quality of service parameter, and for example, the minimum value or the maximum value of the multiple sets of quality of service parameters is used as the second quality of service parameter without limitation.

When the V2X traffic type of interest comprises a V2X traffic type, the second PC5 quality of service stream comprises a PC5 quality of service stream. When the V2X traffic type of interest comprises a plurality of V2X traffic types, the second PC5 quality of service stream comprises one or more PC5 quality of service streams.

Illustratively, the V2X layer establishes a PC5 quality of service flow for each of the V2X traffic types of interest. The qos parameter corresponding to the V2X service type is the qos parameter of the PC5 qos flow.

Illustratively, the V2X layer establishes a PC5 quality of service flow for each of the V2X traffic types of interest. The service quality parameter corresponding to the V2X service type is the service quality parameter of the PC5 service quality flow.

Optionally, the V2X layer may also determine an L2 address (e.g., a MAC address), which L2 address is used for group communication by the terminal device. For example, the V2X layer maintains a mapping relationship of V2X traffic types and L2 addresses, and the V2X layer may determine the L2 addresses based on V2X traffic types of interest from the application layer, and the maintained mapping relationship of V2X traffic types and L2 addresses. Or, the application layer sends the group identifier to the V2X layer, and the V2X layer converts the group identifier into an L2 address of the group communication based on the group identifier and a preset rule (or algorithm).

The identity of each PC5 qos flow in the second PC5 qos flow and the corresponding qos parameters may be stored in the context of the PC5 qos flow. Optionally, the L2 address may also be saved in context.

Step 5042: and the V2X layer sends the identifier of the second PC5 service quality stream and the second service quality parameter to the access layer of the terminal equipment.

Correspondingly, the access layer receives the identity of the second PC5 quality of service flow and the second quality of service parameter from the V2X layer.

Specifically, the V2X layer sends, to the access layer, an identifier of each PC5 qos flow in the second PC5 qos flow and a qos parameter corresponding to each PC5 qos flow. Correspondingly, the access layer receives the identity of each PC5 qos flow in the second PC5 qos flow from the V2X layer, and the qos parameters corresponding to each PC5 qos flow.

Optionally, the V2X layer may also send the L2 address determined in step 5041 to the access layer.

Step 5043: the access layer configures a side-uplink radio bearer (SL radio) based on a second quality of service parameter from the V2X layer, a second PC5 quality of service flow (optionally including an L2 address).

The AS layer may configure one SL radio bearer for each QoS Flow ID, or the AS layer may configure one SL radio bearer for multiple QoS Flow IDs. Belongs to the prior art and is not repeated.

Example 2: the second PC5 quality of service flow is established based on the interesting V2X service type of the terminal device in combination with the V2X layer, and detailed description is made.

Fig. 6 shows a schematic flow chart of a possible communication method according to an embodiment of the present application, including the following steps:

step 601: and the application layer of the terminal equipment sends the V2X service type corresponding to the group and the interested V2X service type of the terminal equipment to the V2X layer of the terminal equipment.

The interested V2X service type belongs to the V2X service type corresponding to the group. The V2X traffic types of interest may include one or more V2X traffic types. For example, the V2X traffic type for the group includes one or more of the following: anti-collision service, inter-vehicle safety driving service, vehicle tracking service, distributed environment notification service, cooperation perception message service, GPS correction service, crossroad safety service, road dangerous vehicle notification service, road sign information notification service, vehicle application abnormality reporting service and the like. The V2X traffic type of interest may be one or more of the group-corresponding V2X traffic types.

Specifically, the application layer may send the interesting V2X service type to the V2X layer in a variety of implementation manners, for example, the application layer directly sends the identifier of the interesting V2X service type to the V2X layer. Or, for another example, the application layer sends a V2X data packet (packet) to the V2X layer, where a field of the V2X data packet carries an identifier of the V2X service type of interest. Or, the application layer indicates to the V2X layer which service type or types of the V2X service types corresponding to the group are the V2X service types of interest.

Step 602: and the V2X layer determines that the V2X service type corresponding to the group does not comprise a non-DRX service type.

It should be noted that step 602 is an optional step, which may or may not be performed, and is not limited.

The process of determining that the V2X service type corresponding to the group does not include the non-DRX service type by the V2X layer may refer to the description in step 402, and the description is not repeated.

Step 603: the V2X layer determines a first quality of service parameter based on the V2X service type corresponding to the group; and establishing a second PC5 quality of service flow based on the V2X service type of interest of the terminal device, and determining a second quality of service parameter based on the V2X service type of interest of the terminal device.

The process of establishing the second PC5 quality of service flow and determining the second quality of service parameter based on the V2X traffic type of interest may be similar to the process of establishing the first PC5 quality of service flow and determining the first quality of service parameter based on the group-corresponding V2X traffic type. The process of establishing the second PC5 qos flow based on the V2X service type of interest of the terminal device and determining the second qos parameter based on the V2X service type of interest of the terminal device may refer to the description in step 5041, and will not be repeated.

Step 604: and the V2X layer sends the first service quality parameter, the identifier of the second PC5 service quality stream and the second service quality parameter to an access layer of the terminal equipment.

Accordingly, the access layer receives the first quality of service parameter, the identity of the second PC5 quality of service flow, and the second quality of service parameter from the V2X layer.

When the V2X layer sends the identifier of the second PC5 qos flow and the second qos parameter to the access layer of the terminal device, the V2X layer sends the identifier of each PC5 qos flow in the second PC5 qos flow and the qos parameter corresponding to each PC5 qos flow to the access layer; illustratively, the V2X layer sends to the access layer an identification of each of the second PC5 quality of service flows and an indication of which of the first quality of service parameters are the quality of service parameters corresponding to that PC5 quality of service flow.

Optionally, the V2X layer may also send the L2 address determined in step 603 to the access layer.

In an alternative example, the V2X layer may further send a first indication to an access layer, and accordingly, the access layer receives the first indication from the V2X layer, where the first indication is used to indicate that the PC5 DRX parameter of the group is determined based on the first quality of service parameter corresponding to the V2X service type corresponding to the group. The first indication may be SL DRX indication. By means of the first indication, the access layer can be made more accurate to know which quality of service parameters based on which to determine the PC5 DRX parameters.

Step 605: the access layer determining PC5 DRX parameters of the group based on the first quality of service parameter; and configuring a side-link radio bearer (SL radio bearer) based on the second quality-of-service parameter, the second PC5 quality-of-service flow (optionally including the L2 address).

The PC5 DRX parameter of the group is specifically used for the second PC5 QoS stream to transmit the service of the V2X service type corresponding to the group. The process of determining the PC5 DRX parameters of the group based on the first quality of service parameter may refer to the description in step 304, and will not be repeated.

Optionally, the access layer may determine the PC5DRX parameters of the group based on the first quality of service parameter based on the first indication. By means of the first indication, the access layer can be made more accurate to know which quality of service parameters based on which to determine the PC5DRX parameters.

In an alternative example, when the V2X layer determines that the V2X traffic type corresponding to the group does not include the non-DRX traffic type, steps 603 to 605 of fig. 6 are performed. When the V2X layer determines that the V2X service type corresponding to the group includes a non-DRX service type, the V2X layer may not need to determine the DRX parameter, and the V2X layer does not need to perform the process of determining the first quality of service parameter by the V2X layer based on the V2X service type corresponding to the group in step 603. A detailed example is described below in connection with this process.

Fig. 7 shows a schematic flow chart of a possible communication method according to an embodiment of the present application, including the following steps:

step 701: and the application layer of the terminal equipment sends the V2X service type corresponding to the group and the interested V2X service type of the terminal equipment to the V2X layer of the terminal equipment.

The interested V2X service type belongs to the V2X service type corresponding to the group.

The process of step 701 may refer to the description in step 601, and the detailed description will not be repeated.

Step 702: the V2X layer establishes a second PC5 quality of service flow based on the V2X service type of interest and determines a second quality of service parameter based on the V2X service type of interest.

The process of establishing the PC5 qos flow by the V2X layer based on the V2X service type of interest and determining the second qos parameter based on the V2X service type of interest may refer to the description in step 603, and will not be repeated.

Step 703: the V2X layer determines whether the V2X service type corresponding to the group includes a non-DRX service type.

The order of steps 703 and 702 is not limited.

Step 704: when the V2X layer determines that the non-DRX traffic type is not included, it determines to turn on the DRX function.

Further, steps 7041 to 7043 may be performed.

Step 7041: the V2X layer determines a first quality of service parameter based on a V2X service type.

The process of determining the first quality of service parameter by the V2X layer based on the V2X service type may refer to the description of step 302, and will not be repeated.

Step 7042: the V2X layer sends the first quality of service parameter determined in step 7041 and the identity of the second PC5 quality of service flow and the second quality of service parameter determined in step 702 to the access layer of the terminal device.

Optionally, the V2X layer may also send the L2 layer address determined in step 702 to the access layer.

Optionally, the V2X layer may further send a first indication to an access layer, and accordingly, the access layer receives the first indication from the V2X layer, where the first indication is used to indicate that the PC5 DRX parameter of the group is determined based on the first quality of service parameter corresponding to the V2X service type corresponding to the group. By means of the first indication, the access layer can be made more accurate to know which quality of service parameters based on which to determine the PC5 DRX parameters.

Step 7043: the access layer determining PC5 DRX parameters of the group based on the first quality of service parameter; and configuring a side-link radio bearer (SL radio bearer) based on the second quality-of-service parameter, the second PC5 quality-of-service flow (optionally including the L2 address).

Step 705: when the V2X layer determines to include a non-DRX traffic type, it is determined not to turn on the DRX function.

Further, steps 7051 to 7052 may be performed.

Step 7051: the V2X layer sends the identity of the second PC5 quality of service flow and the second quality of service parameter determined in step 702 to the access layer of the terminal device.

Step 7052: the access layer configures a side-uplink radio bearer (SL radio bearer) based on the second quality of service parameter, a second PC5 quality of service flow (optionally including an L2 address).

In another specific example, after step 702, the V2X layer may send the identifier of the second PC5 quality of service flow, the second quality of service parameter, and the L2 layer address determined in step 702 to the access layer without performing step 703 to determine whether the V2X service type corresponding to the group includes a non-DRX service type. After the execution of step 703, the following procedure may be performed:

If the non-DRX service type is not included, the V2X layer determines a first service quality parameter based on the V2X service type corresponding to the group, and sends the first service quality parameter to the access layer; the access layer performs step 7043.

If a non-DRX type is included, the V2X layer does not need to determine a first quality of service parameter based on the V2X service type corresponding to the group, and the access layer performs step 7052.

Example 2:

fig. 8 shows a schematic flow chart of a possible communication method according to an embodiment of the present application, including the following steps:

step 801: the application layer of the terminal device sends a second indication to the V2X layer of the terminal device, wherein the second indication is used for indicating group communication.

Accordingly, the V2X layer receives a second indication from the application.

Specifically, the second instruction is used for instructing the terminal device to perform group communication in a group. For example, the second indication includes an identification of the group.

Wherein the terminal devices belong to a group. Specifically, a group may include a plurality of terminal devices. Any terminal device in the group may perform the communication procedure of the present application. The group can be established dynamically or pre-configured, and the process of establishing the group is not limited in the application. For example, fleet travel requires the establishment of a fleet of vehicles, which may be pre-configured or dynamically established. In addition, the establishment and the control of the group can be performed by taking the server as a control center; the vehicles can also be established and controlled by PC5 interface communication or other short-distance communication modes, and vehicles (such as a head) in one group can be used as the controlled vehicles.

For example, the application layer of the terminal device may send the second indication to the V2X layer after triggering the service.

Optionally, the application layer may also send the V2X service type corresponding to the group to the V2X layer. Correspondingly, the V2X layer receives the V2X service type corresponding to the group from the application layer. The process of the application layer sending the V2X service type corresponding to the group to the V2X layer may refer to the description in step 301, and the description is not repeated.

Step 802: and the V2X layer determines that the V2X service type corresponding to the group does not comprise a non-DRX service type.

It should be noted that step 802 is an optional step, which may or may not be performed, and is not limited.

Specifically, when the V2X layer determines that the V2X service type corresponding to the group does not include the non-DRX service type, the following steps 803 to 804 are performed.

The process of determining that the V2X service type corresponding to the group does not include the non-DRX service type by the V2X layer may refer to the description of step 402, and the description is not repeated.

Step 803: and the V2X layer sends the PC5DRX parameter of the group or the service quality parameter of the group to an access layer of the terminal equipment based on the second indication.

Correspondingly, the access layer receives the PC5DRX parameters of the group or the quality of service parameters of the group from the V2X layer.

Wherein the quality of service parameters of the group are used to determine the PC5DRX parameters of the group. And the PC5DRX parameter of the group is used for transmitting the service of the V2X service type corresponding to the group.

Specifically, the V2X layer determines, based on the second indication, that the multicast service needs to be used with the group PC5DRX parameter or the quality of service parameter of the group, and since the V2X layer locally pre-configures or pre-acquires the group PC5DRX parameter or the quality of service parameter of the group from other network elements (e.g., PCFs), the V2X layer may acquire the group PC5DRX parameter or the quality of service parameter of the group and send the group PC5DRX parameter or the quality of service parameter of the group to the access layer.

Illustratively, the terminal device (e.g., V2X layer of the terminal device) sends request information to the policy control network element, the request information being used to obtain the PC5DRX parameters or the quality of service parameters for the group communication. The terminal device (e.g., V2X layer of the terminal device) receives the PC5DRX parameters or quality of service parameters for group communication from the policy control network element. The V2X layer takes the acquired PC5DRX parameter or service quality parameter for group communication as the PC5DRX parameter or service quality parameter of the group. The PC5DRX parameters or quality of service parameters for group communication may be contained in V2X configuration information of the terminal device, which V2X configuration information is sent by other network elements to the terminal device and stored on the terminal device.

Optionally, when the policy control network element sends the PC5DRX parameter or the quality of service parameter for group communication to the terminal device (e.g., V2X layer of the terminal device), the policy control network element may specifically send the group indication (e.g., groupcast indication) and the PC5DRX parameter/quality of service parameter to the terminal device (e.g., V2X layer of the terminal device).

The policy control network element may configure a general PC5DRX parameter or a quality of service parameter for group communication for all terminal devices; the PC5DRX parameters or quality of service parameters specific to the group communication may also be configured for different groups.

Step 804: the access layer determines PC5DRX parameters for the group based on the quality of service parameters for the group.

The process of determining the PC5DRX parameters of the group by the access layer based on the quality of service parameters of the group may refer to the process of determining the PC5DRX parameters of the group based on the first quality of service parameters described in step 304, and will not be repeated.

It should be noted that step 804 is an optional step, which may or may not be performed, and is not limited.

Step 804 may not be performed if the V2X layer sends the PC5DRX parameters of the group to the access stratum.

The terminal equipment transmits the service of the V2X service type corresponding to the group based on the PC5DRX parameter of the group, and the terminal equipment can save power consumption through a DRX mechanism. Further, the terminal devices in the group are configured with the same PC5DRX parameter or service quality parameter, the terminal devices in the group can directly acquire the same PC5DRX parameter or determine the same PC5DRX parameter based on the same service quality parameter, and a plurality of terminal devices in the group can perform multicast communication better.

Based on the example of fig. 8, the V2X layer may also establish a PC5 quality of service flow, and transmit the service of the V2X service type corresponding to the group through the established PC5 quality of service flow.

In one example, the V2X layer establishes the first PC5 quality of service flow based on the V2X traffic type corresponding to the group without regard to whether the V2X traffic type corresponding to the group includes a non-DRX traffic type. And the PC5DRX parameter of the group is used for the first PC5 service quality stream to transmit the service of the V2X service type corresponding to the group. There may be a portion of the first PC5 qos flow where no data is transmitted, and this portion of the PC5 qos flow is established unnecessarily.

In an example, whether the V2X service type corresponding to the group includes a non-DRX service type does not need to be considered, and the V2X layer establishes a second PC5 quality of service flow based on the V2X service type of interest of the terminal device, where the second PC5 DRX parameter is specifically used for the second PC5 quality of service flow to transmit the service of the V2X service type corresponding to the group. The second PC5 quality of service stream established based on the V2X traffic type of interest of the terminal device is typically data-transmitted.

In one example, when the V2X layer determines that the V2X traffic type corresponding to the group does not include the non-DRX traffic type, a second PC5 quality of service flow is established based on the V2X traffic type of interest of the terminal device, and DRX parameters are determined using the procedures of step 803 and step 804. When the V2X layer determines that the V2X service type corresponding to the group includes a non-DRX service type, a second PC5 quality of service flow is established based on the V2X service type of interest of the terminal device, without determining a DRX parameter. By determining whether the V2X service type corresponding to the group comprises the non-DRX service type, useless DRX parameters can be determined when the non-DRX service type is included, and resource waste caused by an invalid processing process can be avoided. A detailed example is described below in connection with this process.

Fig. 9 shows a schematic flow chart of a possible communication method according to an embodiment of the present application, including the following steps:

step 901: and the application layer of the terminal equipment sends a second indication, the V2X service type corresponding to the group and the interested V2X service type of the terminal equipment to the V2X layer of the terminal equipment.

Correspondingly, the V2X layer receives a second indication from the application layer, the V2X service type corresponding to the group and the V2X service type of interest of the terminal equipment.

The second indication is for indicating a group communication, e.g. the second indication comprises an identification of the group.

The process of the application layer of the terminal device sending the V2X service type and the interested V2X service type corresponding to the group to the V2X layer of the terminal device may refer to the description in step 501, and the description is not repeated.

Step 902: the V2X layer establishes a second PC5 quality of service stream based on the V2X service type of interest, and determines a second quality of service parameter based on the V2X service type of interest of the terminal device.

The process of the V2X layer establishing the second PC5 qos flow based on the V2X service type of interest and determining the second qos parameter based on the V2X service type of interest of the terminal device may refer to the description in step 5041, and will not be repeated.

Step 903: the V2X layer determines whether the V2X service type corresponding to the group includes a non-DRX service type.

The process of the V2X layer determining whether the V2X service type corresponding to the group includes the non-DRX service type may refer to the description in step 402, and the description is not repeated.

The order of steps 903 and 902 is not limited.

Step 904: when the V2X layer determines that the non-DRX traffic type is not included, it determines to turn on the DRX function.

The DRX function may be specifically a service of a V2X service type corresponding to the transmission group using a DRX mechanism (or a PC5DRX parameter).

Further, steps 9041 to 9043 may be performed.

Step 9041: and the V2X layer sends the PC5DRX parameter of the group or the service quality parameter of the group to an access layer of the terminal equipment based on the second indication. The V2X layer may also send the identification of the second PC5 quality of service flow and the second quality of service parameter determined in step 902 to the access layer.

Correspondingly, the access layer receives the PC5DRX parameters of the group or the quality of service parameters of the group from the V2X layer. The access layer may also receive an identification of a second PC5 quality of service flow and a second quality of service parameter from the V2X layer.

The V2X layer may further send, to the access layer, an identifier of the second PC5 qos flow and a second qos parameter, and specifically, the V2X layer sends, to the access layer, the identifier of each PC5 qos flow in the second PC5 qos flow and the qos parameter corresponding to each PC5 qos flow. Correspondingly, the access layer receives the identity of each PC5 qos flow in the second PC5 qos flow from the V2X layer, and the qos parameters corresponding to each PC5 qos flow.

Optionally, the V2X layer may also send the L2 layer address determined in step 902 to the access layer.

Step 9042: the access layer configures a side-uplink radio bearer (SL radio bearer) based on the second quality of service parameter, a second PC5 quality of service flow (optionally including an L2 address).

Step 9043: the access layer determines a PC5 DRX parameter of a group based on the quality of service parameter, wherein the PC5 DRX parameter of the group is used for the second PC5 quality of service stream to transmit the V2X service type service of the group.

It should be noted that step 9043 is an optional step, which may or may not be performed, and is not limited.

The process of determining the PC5 DRX parameters of the group by the access layer based on the quality of service parameters of the group may refer to the process of determining the PC5 DRX parameters of the group based on the first quality of service parameters described in step 304, and will not be repeated.

If the V2X layer sends the PC5 DRX parameters of the group to the access stratum, step 9043 may not be performed.

In addition, the sequence of step 9042 and step 9043 is not limited.

Step 905: when the V2X layer determines to include a non-DRX traffic type, it is determined not to turn on the DRX function.

Further, steps 9051 to 9052 may be performed.

Step 9051: the V2X layer sends the identification of the second PC5 quality of service flow and the second quality of service parameter determined in step 902 to the access layer.

Step 9052: the access layer configures a side-uplink radio bearer (SL radio bearer) based on the second quality of service parameter, a second PC5 quality of service flow (optionally including an L2 address).

In another specific example, after step 902, the V2X layer may send the identifier of the second PC5 quality of service flow, the second quality of service parameter, and the L2 layer address determined in step 902 to the access layer without performing step 903 to determine whether the V2X service type corresponding to the group includes a non-DRX service type. After step 903 is performed, the following process may be performed:

If the non-DRX service type is not included, the V2X layer sends the service quality parameter or the PC5DRX parameter of the group to the access layer based on the second indication; the access stratum performs step 9042 and step 9043.

If the non-DRX type is included, the V2X layer does not need to send the quality of service parameters or PC5DRX parameters of the group to the access layer, which performs step 9052.

The foregoing describes the method of embodiments of the present application, and the apparatus of embodiments of the present application will be described hereinafter. The method and the device are based on the same technical conception, and because the principles of solving the problems by the method and the device are similar, the implementation of the device and the method can be mutually referred to, and the repeated parts are not repeated.

The embodiment of the present application may divide the functional modules of the apparatus according to the above method example, for example, each function may be divided into each functional module, or two or more functions may be integrated into one module. These modules may be implemented in hardware or in software functional modules. It should be noted that, in the embodiment of the present application, the division of the modules is schematic, which is merely a logic function division, and other division manners may be used in specific implementation.

Based on the same technical concept as the above method, referring to fig. 10, there is provided a schematic structural diagram of a communication apparatus 1000, and the communication apparatus 1000 may include one or more of the following: a processing module 1010, a receiving module 1020a, a transmitting module 1020b, and a storage module 1030. The processing module 1010 may be connected to the storage module 1030 and the receiving module 1020a and the transmitting module 1020b, respectively, and the storage module 1030 may also be connected to the receiving module 1020a and the transmitting module 1020 b.

In one example, the receiving module 1020a and the transmitting module 1020b may be integrated together, and may be defined as a transceiver module.

In one example, the communication apparatus 1000 may be a terminal device, or may be a chip or a functional unit applied in the terminal device. The communication device 1000 has any of the functions of the terminal device in the above-described method, for example, the communication device 1000 can perform the respective steps performed by the terminal device in the above-described methods of fig. 2 to 9.

The receiving module 1020a may perform the receiving actions performed by the respective layers (e.g., the application layer, the V2X layer, the access layer) of the terminal device in the foregoing method embodiment.

The sending module 1020b may perform sending actions performed by each layer (e.g., application layer, V2X layer, access layer) of the terminal device in the foregoing method embodiment.

The processing module 1010 may execute actions other than the sending action and the receiving action in the actions executed by the respective layers (for example, the application layer, the V2X layer, the access layer) of the terminal device in the above method embodiment.

In an example, the sending module 1020b is configured to send, by an application layer of a terminal device, a V2X service type corresponding to a group to a V2X layer of an internet of vehicles of the terminal device, where the terminal device belongs to the group; the processing module 1010 is configured to determine a first quality of service parameter by using the V2X layer based on the V2X service type corresponding to the group; the sending module 1020b is further configured to send, by the V2X layer, the first quality of service parameter to an access layer of the terminal device; the processing module 1010 is further configured to determine, by the access layer, a PC5 discontinuous reception DRX parameter of the group based on the first quality of service parameter, where the PC5 DRX parameter is used to transmit a service of a V2X service type corresponding to the group.

In an example, the processing module 1010 is further configured to establish a first PC5 qos flow by the V2X layer based on the V2X service type corresponding to the group, where the PC5 DRX parameter of the group is specifically used for the first PC5 qos flow to transmit the service of the V2X service type corresponding to the group.

In one example, the V2X service types corresponding to the group include at least two V2X service types; the first PC5 quality of service stream includes at least one PC5 quality of service stream.

In an example, the processing module 1010 is specifically configured to establish a PC5 quality of service flow for each V2X service type in the V2X service types corresponding to the group by the V2X layer; or, the V2X layer establishes a PC5 quality of service flow for each type of V2X service type in the V2X service types corresponding to the group.

In one example, when a first V2X service type of the V2X service types corresponding to the group includes at least two V2X service types, quality of service parameters of the at least two V2X service types of the first V2X service type are the same.

In an example, the V2X service type corresponding to the group includes an interested V2X service type of the terminal device, and the processing module 1010 is further configured to establish a second PC5 quality of service flow by the V2X layer based on the interested V2X service type, where the PC5 DRX parameter of the group is specifically used for the second PC5 quality of service flow to transmit the service of the V2X service type corresponding to the group.

In one example, the receiving module 1020a is configured to receive, by the access layer, a first indication from the V2X layer, the first indication being configured to indicate a PC5 DRX parameter for determining the group based on the first quality of service parameter.

In an example, the processing module 1010 is specifically configured to determine the first quality of service parameter by the V2X layer based on a mapping relationship between a V2X service type and a quality of service parameter and a V2X service type corresponding to the group.

In an example, the processing module 1010 is further configured to determine, by the V2X layer, that the V2X service type corresponding to the group does not include a non-DRX service type.

In an example, the sending module 1020b is configured to send, by an application layer of a terminal device, a second indication to an internet of vehicles V2X layer of the terminal device, where the second indication is used to instruct the terminal device to perform group communication in a group, and the terminal device belongs to the group; the processing module 1010 is configured to send, to an access layer of the terminal device, a PC5 discontinuous reception DRX parameter of the group or a quality of service parameter of the group based on the second indication, where the quality of service parameter is used to determine a PC5 DRX parameter of the group, and the PC5 DRX parameter is used to transmit a service of a V2X service type corresponding to the group.

In one example, the receiving module 1020a is configured to receive the quality of service parameter from the V2X layer by the access layer; the processing module 1010 is further configured to determine, by the access stratum, the PC5DRX parameter based on the quality of service parameter.

In an example, the sending module 1020b is further configured to send, to the V2X layer, a V2X service type of interest of the terminal device by the application layer; the processing module 1010 is further configured to establish a PC5 quality of service flow based on the V2X service type of interest by the V2X layer, where the PC5DRX parameter is specifically used for the PC5 quality of service flow to transmit a service of the V2X service type corresponding to the group.

In an example, the receiving module 1020a is further configured to receive, by the V2X layer, a PC5DRX parameter of the group or a quality of service parameter of the group from a policy control network element.

In one example, the second indication includes an identification of the group.

In one example, the storage module 1030 may store computer-executable instructions of a method performed by a terminal device, such that the processing module 1010 and the receiving module 1020a and the transmitting module 1020b perform the method performed by the terminal device in the above example.

By way of example, a memory module may include one or more memories, which may be one or more devices, circuits, or means for storing programs or data. The memory module may be a register, a cache, a RAM, etc., and may be integrated with the processing module. The memory module may be a ROM or other type of static storage device that may store static information and instructions, and may be independent of the processing module.

The transceiver module may be an input or output interface, a pin or circuit, etc.

As one possible product form, the apparatus may be implemented by a general bus architecture.

As shown in fig. 11, a schematic block diagram of a communication device 1100 is provided.

The communications device 1100 may include one or more of the following: a processor 1110, a transceiver 1120, and a memory 1130. The transceiver 1120 may be configured to receive a program or instructions and transmit the program or instructions to the processor 1110, or the transceiver 1120 may be configured to interact with other communication devices, such as interaction control signaling and/or traffic data, etc., by the communication apparatus 1100. The transceiver 1120 may be a code and/or data read-write transceiver, or the transceiver 1120 may be a signal transmission transceiver between a processor and a transceiver. The processor 1110 is electrically coupled to the memory 1130.

In one example, the communication apparatus 1100 may be a terminal device, or may be a chip applied to the terminal device. It will be appreciated that the apparatus has any of the functions of the terminal device in the above-described method, for example, the communication apparatus 1100 is capable of performing the steps performed by the terminal device in the above-described methods of fig. 2 to 9. By way of example, the memory 1130 is used to store a computer program; the processor 1110 may be configured to invoke a computer program or instructions stored in the memory 1130, perform a method performed by the terminal device in the above example, or perform a method performed by the terminal device in the above example through the transceiver 1120.

The processing module 1010 in fig. 10 may be implemented by the processor 1110.

The receiving module 1020a and the transmitting module 1020b in fig. 10 may be implemented by the transceiver 1120. Alternatively, the transceiver 1120 is divided into a receiver that performs the function of a receiving module and a transmitter that performs the function of a transmitting module.

The storage module 1030 of fig. 10 may be implemented by the memory 1130.

As one possible product form, the apparatus may be implemented by a general-purpose processor (a general-purpose processor may also be referred to as a chip or a system-on-chip).

In a possible implementation manner, a general purpose processor implementing an apparatus applied to a terminal device includes: processing circuitry (processing circuitry may also be referred to as a processor); optionally, the method further comprises: an input-output interface in communication with the processing circuitry, a storage medium (the storage medium may also be referred to as a memory) for storing instructions to be executed by the processing circuitry to perform the methods performed by the terminal device in the examples described above.

The processing module 1010 in fig. 10 may be implemented by a processing circuit.

The receiving module 1020a and the transmitting module 1020b in fig. 10 may be implemented by input-output interfaces. Or the input/output interface is divided into an input interface and an output interface, the input interface performs the function of the receiving module, and the output interface performs the function of the transmitting module.

The storage module 1030 in fig. 10 may be implemented by a storage medium.

As one possible product form, the apparatus of the embodiments of the present application may also be implemented using: one or more FPGAs (field programmable gate arrays), PLDs (programmable logic devices), controllers, state machines, gate logic, discrete hardware components, any other suitable circuitry, or any combination of circuitry capable of performing the various functions described throughout this application.

The embodiments of the present application also provide a computer-readable storage medium storing a computer program that, when executed by a computer, can cause the computer to perform the method of communication described above. Or the following: the computer program comprises instructions for implementing the method of communication described above.

The embodiment of the application also provides a computer program product, which comprises: computer program code which, when run on a computer, enables the computer to perform the method of communication provided above.

In addition, the processor mentioned in the embodiments of the present application may be a central processor (central processing unit, CPU), a baseband processor, and a CPU may be integrated together or separated, or may be a network processor (network processor, NP) or a combination of a CPU and an NP. The processor may further comprise a hardware chip or other general purpose processor. The hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (programmable logic device, PLD), or a combination thereof. The PLD may be a complex programmable logic device (complex programmable logic device, CPLD), a field-programmable gate array field-programmable gate array (FPGA), general-purpose array logic (generic array logic, GAL), and other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like, or any combination thereof. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The memory referred to in the embodiments of the present application may be volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (Double Data Rate SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DR RAM). It should be noted that the memory described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

The transceiver mentioned in the embodiments of the present application may include a separate transmitter and/or a separate receiver, or the transmitter and the receiver may be integrated. The transceiver may operate under the direction of a corresponding processor. Alternatively, the transmitter may correspond to a transmitter in a physical device and the receiver may correspond to a receiver in the physical device.

Those of ordinary skill in the art will appreciate that the various method steps and elements described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the steps and components of the various embodiments have been described generally in terms of functionality in the foregoing description to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Those of ordinary skill in the art may implement the described functionality using different approaches for each particular application, but such implementation is not to be considered as beyond the scope of the present application.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. In addition, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices, or elements, or may be an electrical, mechanical, or other form of connection.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purposes of the embodiments of the present application.

In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application is essentially or a part contributing to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a read-only memory (ROM), a random access memory (random access memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

In the present application, "and/or" describing the association relationship of the association object, it means that there may be three relationships, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship. The term "plurality" as used herein refers to two or more. In addition, it should be understood that in the description of this application, the words "first," "second," and the like are used merely for distinguishing between the descriptions and not for indicating or implying any relative importance or order.

While preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various modifications and variations can be made to the embodiments of the present application without departing from the spirit and scope of the embodiments of the present application. Thus, if such modifications and variations of the embodiments of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to include such modifications and variations.

Claims

1. A method of communication, comprising:

the method comprises the steps that an application layer of terminal equipment sends a V2X service type corresponding to a group to a V2X layer of the Internet of vehicles of the terminal equipment, wherein the terminal equipment belongs to the group;

the V2X layer determines a first quality of service parameter based on the V2X service type corresponding to the group;

the V2X layer sends the first quality of service parameter to an access layer of the terminal equipment;

and the access layer determines a PC5 Discontinuous Reception (DRX) parameter of the group based on the first service quality parameter, wherein the PC5 DRX parameter is used for transmitting the service of the V2X service type corresponding to the group.

2. The method as recited in claim 1, further comprising:

and the V2X layer establishes a first PC5 service quality stream based on the V2X service type corresponding to the group, wherein the PC5 DRX parameter of the group is specifically used for transmitting the service of the V2X service type corresponding to the group by the first PC5 service quality stream.

3. The method of claim 2, wherein the group-corresponding V2X traffic types include at least two V2X traffic types; the first PC5 quality of service stream includes at least one PC5 quality of service stream.

4. A method according to claim 2 or 3, wherein the V2X layer establishes a first PC5 quality of service flow based on the V2X traffic type corresponding to the group, comprising:

the V2X layer establishes a PC5 service quality stream for each V2X service type in the V2X service types corresponding to the group; or,

and the V2X layer establishes a PC5 service quality stream for each type of V2X service type in the V2X service types corresponding to the group.

5. The method of claim 4, wherein when a first one of the group-corresponding V2X service types includes at least two V2X service types, quality of service parameters of the at least two V2X service types in the first one of the V2X service types are the same.

6. The method of claim 1, wherein the group-corresponding V2X traffic type comprises a V2X traffic type of interest of the terminal device, further comprising:

and the V2X layer establishes a second PC5 service quality stream based on the interested V2X service type, and the PC5 DRX parameter of the group is specifically used for transmitting the service of the V2X service type corresponding to the group by the second PC5 service quality stream.

7. The method of claim 6, wherein prior to the access layer determining the group of PC5 DRX parameters based on the first quality of service parameter, further comprising:

The access layer receives a first indication from the V2X layer indicating a PC5 DRX parameter for determining the group based on the first quality of service parameter.

8. The method of any of claims 1-7, wherein the V2X layer determining a first quality of service parameter based on the V2X traffic type corresponding to the group comprises:

the V2X layer determines the first quality of service parameter based on a mapping relation between a V2X service type and a quality of service parameter and the V2X service type corresponding to the group.

9. The method according to any one of claims 1-8, wherein before the V2X layer determines the first quality of service parameter based on the V2X service type corresponding to the group, further comprising:

and the V2X layer determines that the V2X service type corresponding to the group does not comprise a non-DRX service type.

10. A method of communication, comprising:

the application layer of the terminal equipment sends a second instruction to the V2X layer of the Internet of vehicles of the terminal equipment, wherein the second instruction is used for instructing the terminal equipment to carry out group communication in a group, and the terminal equipment belongs to the group;

and the V2X layer sends the PC5 discontinuous reception DRX parameter of the group or the service quality parameter of the group to the access layer of the terminal equipment based on the second indication, wherein the service quality parameter is used for determining the PC5 DRX parameter of the group, and the PC5 DRX parameter is used for transmitting the service of the V2X service type corresponding to the group.

11. The method as recited in claim 10, further comprising:

the access layer receiving the quality of service parameters from the V2X layer;

the access layer determines the PC5 DRX parameter based on the quality of service parameter.

12. The method of claim 10 or 11, further comprising:

the application layer sends the interesting V2X service types of the terminal equipment to the V2X layer;

and the V2X layer establishes a PC5 service quality stream based on the interested V2X service type, and the PC5 DRX parameter is specifically used for transmitting the service of the V2X service type corresponding to the group by the PC5 service quality stream.

13. The method of any one of claims 10-12, further comprising:

the V2X layer receives a PC5 DRX parameter of the group or a quality of service parameter of the group from a policy control network element.

14. The method of any of claims 10-13, wherein the V2X layer, based on the second indication, further comprises, prior to sending the group of PC5 discontinuous reception, DRX, parameters or the group of quality of service parameters to an access layer of the terminal device:

15. The method of any of claims 10-14, wherein the second indication comprises an identification of the group.

16. A communication device, comprising: functional module for implementing the method according to any of claims 1-15.

17. A communications apparatus comprising a processor coupled to a memory;

the memory is used for storing a computer program or instructions;

the processor being configured to execute part or all of the computer program or instructions in the memory, which, when executed, is configured to implement the method of any of claims 1-15.

18. A communication device comprising a processor and a memory;

the memory is used for storing a computer program or instructions;

19. A chip system, the chip system comprising: a processing circuit; the processing circuit is coupled with a storage medium;

The processing circuitry being adapted to execute part or all of the computer program or instructions in the storage medium, which, when executed, is adapted to carry out the method of any one of claims 1-15.

20. A computer readable storage medium storing a computer program comprising instructions for implementing the method of any one of claims 1-15.

21. A computer program product, the computer program product comprising: computer program code which, when run on a computer, causes the computer to perform the method of any of claims 1-15.