CN111343667B

CN111343667B - Communication method and communication device

Info

Publication number: CN111343667B
Application number: CN201811558769.XA
Authority: CN
Inventors: 彭文杰; 王君; 戴明增
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-12-19
Filing date: 2018-12-19
Publication date: 2022-12-13
Anticipated expiration: 2038-12-19
Also published as: WO2020125237A1; CN111343667A

Abstract

A communication method and a communication device are provided, wherein the method comprises the steps of determining a first wireless access technology used for sending a first data packet, determining a first QoS parameter corresponding to the first data packet according to the first wireless access technology, and sending the first data packet to a second communication device through a first wireless direct connection communication interface applying the first wireless access technology according to the first QoS parameter; the communication device has the capability of data transmission over a first wireless direct communication interface applying a first wireless access technology and has the capability of data transmission over a second wireless direct communication interface applying a second wireless access technology. Thus, the first QoS parameter that can be identified by the first wireless direct communication interface can be determined as required without changing the existing mechanism for determining the QoS parameter.

Description

Communication method and communication device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a communication method and a communication apparatus.

Background

With the development of communication technology, vehicle to all (V2X) based cellular networks is proposed in the third Generation Partnership project (3 rd Generation Partnership project,3 gpp). V2X is a new generation information communication technology for connecting a vehicle with everything, wherein V represents a vehicle, and X represents any object that interacts information with the vehicle, including, for example, a vehicle, a person, a traffic side infrastructure, and a network, and thus, information patterns of V2X interaction may include vehicle-to-vehicle (V2V), vehicle-to-person (V2P), vehicle-to-infrastructure (V2I), and vehicle-to-network (V2N) interaction, and the like.

In a Long Term Evolution (LTE) system, a set of quality of service (QoS) parameters is introduced for V2X to solve the problems of network delay and congestion. Currently, in an LTE V2X system, the management of QoS parameters is mainly performed based on a single packet priority (PPPP) and a single packet reliability (PPPR). In the LTE system, an application layer, which is usually a communication device, generates a data packet, then the application layer sends the data packet and a priority level designating the data packet to a V2X layer, the V2X layer determines PPPP and/or PPPR according to the designated priority level of the data packet, then the V2X layer sends the data packet, the determined PPPP and/or PPPR to an Access Stratum (AS) of the communication device, the AS configures the PPPP and/or PPPR in a mapping relationship with a logical channel or a logical channel group, and then the AS of the communication device performs V2X service communication based on the PPPP and/or PPPR. For example, the AS receives two data packets, determines that the data packet a has higher priority than the data packet b according to the PPPP and/or PPPR of the two data packets, and the current time-frequency resource is in short supply, and then the AS may preferentially transmit the data packet a and then transmit the data packet b.

In New Radio (NR) V2X systems, the management of QoS parameters is based on QoS Flow identification (QoS Flow ID, QFI) and/or generation 5 QoS indicator (5G QoS indicator, 5qi). After the QFI and/or the 5QI are determined by the V2X layer of the communication device, the AS configures the QFI and/or the 5QI and maps the QFI and/or the 5QI with the logical channel or the logical channel group, and then the AS of the communication device carries out V2X service communication based on the QFI and/or the 5QI.

However, the QoS management mechanism in the NR V2X system is different from that in the LTE V2X system, for example, the LTE V2X system cannot currently identify QoS parameters, such as QFI and/or 5QI, in the NR V2X system. Therefore, if the QoS parameter management mechanism in the existing LTE V2X system can identify the QoS parameter in the NR V2X system, the QoS parameter management mechanism in the LTE V2X system needs to be changed, and thus, the complexity of the QoS parameter management mechanism in the LTE V2X system increases.

Disclosure of Invention

The application provides a communication method and a communication device, which are used for determining a first QoS parameter which can be identified by a first wireless direct connection communication interface as required without changing the existing mechanism for determining the QoS parameter.

In a first aspect, a communication method provided by the present application includes a first communication device determining a first radio access technology used for sending a first data packet, the first communication device determining a first QoS parameter corresponding to the first data packet according to the first radio access technology, and the first communication device sending the first data packet to a second communication device through a first wireless direct connection communication interface applying the first radio access technology according to the first QoS parameter. The first communication device has the capability of data transmission through a first wireless direct communication interface applying a first wireless access technology and has the capability of data transmission through a second wireless direct communication interface applying a second wireless access technology, and the first wireless direct communication interface and the second wireless direct communication interface are communication interfaces between the first communication device and other communication devices.

Based on the scheme, the first communication device has two capabilities of performing data transmission through the wireless direct connection communication interface applying the wireless access technology, when the first data packet is determined to be sent through the first wireless direct connection communication interface, the first QoS parameter corresponding to the first data packet can be determined, and the first wireless direct connection communication interface can identify the first QoS parameter. In this way, when the first wireless direct connection communication interface using the first wireless access technology transmits the first data packet, the existing mechanism for determining the QoS parameter may not be changed, and the first QoS parameter that can be identified by the first wireless direct connection communication interface may be determined as needed.

Illustratively, the present application provides two implementations of determining a first radio access technology for transmitting a first data packet.

Implementation mode one

The first layer of the first communication device receives indication information from the second layer of the first communication device, the indication information is used for indicating a first radio access technology corresponding to the first service, the first data packet belongs to the first service, and the first layer of the first communication device determines the first radio access technology used for sending the first data packet according to the indication information.

For the first implementation manner, the indication information may include the first radio access technology, or include the first service, or include the first radio access technology and the first service, and the first service and the first radio access technology have a mapping relationship.

Optionally, the indication information may further include a communication type, the first layer of the first communication device determines a communication type corresponding to the first service to which the first data packet belongs, and the first layer of the first communication device determines the first QoS parameter according to the first radio access technology and the communication type, where the communication type includes broadcast, multicast, or unicast.

Radio Access Technology (RAT) comprises LTE and NR, and if the first radio access technology is LTE technology, the first layer of the first communication device determines that a first QoS parameter corresponding to the first packet is PPPP and/or PPPR; if the first radio access technology is an NR technology, the first layer of the first communication device determines that the first QoS parameter corresponding to the first packet is QFI and/or 5QI.

For the case where the first radio access technology is an NR technology, the first QoS parameter may be determined according to a communication type in the indication information. In one possible implementation, the first layer of the first communication device determines that the first QoS parameter is QFI if the communication type is unicast or multicast, and determines that the first QoS parameter is 5QI if the communication type is broadcast. In this way, when the communication type is unicast or multicast, the first QoS parameter is identified by the QFI, which helps to reduce the transmission amount of data of the first communication device.

Implementation mode two

The first layer of the first communication device receives assistance information from the second layer of the first communication device, the first layer of the first communication device determining a first radio access technology for transmitting the first data packet based on the assistance information, the assistance information comprising at least one of: the method comprises the steps that channel busy rates corresponding to wireless direct connection communication interfaces of different wireless access technologies respectively, priorities corresponding to the wireless direct connection communication interfaces of the different wireless access technologies respectively, and wireless direct connection communication interfaces of wireless access technologies supported by a current cell covering a first communication device are respectively obtained; illustratively, the first radio access technology is any one of radio access technologies.

In a second aspect, a communication method provided by the present application includes determining, by a first communication device, a second QoS parameter corresponding to a first data packet, acquiring, by the first communication device, a mapping relationship between the first QoS parameter and the second QoS parameter, determining, by the first communication device, a first QoS parameter corresponding to the first data packet according to the second QoS parameter and the mapping relationship, where the first QoS parameter corresponds to a first radio access technology, and sending, by the first communication device, the first data packet to a second communication device through a first wireless direct connection port to which the first radio access technology is applied according to the first QoS parameter.

Based on the scheme, a second QoS parameter of the first data packet is determined, and when it is determined that the first communication device transmits the first data packet using the first wireless direct connection interface of the first wireless access technology, because the first wireless access technology corresponds to the first QoS parameter, the second QoS parameter can be mapped to the first QoS parameter through a mapping relationship between the first QoS parameter and the second QoS parameter, so that the first communication device transmits the first data packet to the second communication device through the first wireless direct connection interface of the first wireless access technology according to the first QoS.

In a possible implementation manner, the second layer of the first communication device receives a second QoS parameter corresponding to the first data packet from the first layer of the first communication device, the second layer of the first communication device determines a first radio access technology used for transmitting the first data packet, the second layer of the first communication device determines the first QoS parameter according to the second QoS parameter, the mapping relationship and the first radio access technology, and the first radio access technology corresponds to the first QoS parameter.

In a possible implementation manner, the second layer of the first communication device may obtain the indication information, and the second layer of the first communication device determines, according to the indication information, a first radio access technology used for sending the first data packet, where the indication information is used to indicate the first radio access technology corresponding to the first service, and the first data packet belongs to the first service.

Optionally, the indication information may include the first radio access technology, or include the first service, or include the first radio access technology and the first service, and the first service has a mapping relationship with the first radio access technology.

In a third aspect, a communication method provided by the present application includes a first communication device determining QoS parameters corresponding to first data packets respectively sent through wireless direct connection communication interfaces applying different wireless access technologies, the first communication device determining the first QoS parameters according to the different QoS parameters corresponding to the first data packets, the first QoS parameters corresponding to a first wireless access technology, and the first communication device sending the first data packets to a second communication device through the first wireless direct connection communication interface applying the first wireless access technology according to the first QoS parameters.

Based on the scheme, the first communication device can determine QoS parameters respectively corresponding to the first data packets sent through the wireless direct connection communication interfaces applying different wireless access technologies, and then select the first QoS parameters from different QoS parameters, so that the first communication device can flexibly select the required first QoS parameters according to actual requirements.

Illustratively, the present application provides the following two implementations for determining the first QoS parameter.

In the first implementation manner, the first QoS parameter corresponding to the first data packet is selected from the QoS parameter class to be transmitted.

The second layer of the first communication device receives different QoS parameters corresponding to the first data packet from the first layer of the first communication device, and the second layer of the first communication device determines the QoS parameters meeting preset conditions in the different QoS parameters corresponding to the first data packet as the first QoS parameters.

In a second implementation, a first radio access technology for transmitting the first data packet is determined.

The second layer of the first communication device receives different QoS parameters corresponding to a first data packet from the first layer of the first communication device, the second layer of the first communication device determines a wireless access technology corresponding to a first service as the first wireless access technology, the first data packet belongs to the first service, and the second layer of the first communication device determines the QoS parameters corresponding to the first wireless access technology from the different QoS parameters corresponding to the first data packet as the first QoS parameters.

For the second implementation manner, a possible implementation manner is that the second layer of the first communication device obtains the indication information, and the second layer of the communication device determines that the first service corresponds to the first radio access technology according to the indication information, where the indication information is used to indicate the first radio access technology corresponding to the first service.

Optionally, the indication information includes a first radio access technology and/or a first service, and the first service and the first radio access technology have a mapping relationship.

In a possible implementation manner, the different radio access technologies include NR and LTE, and the first layer of the first communication device determines that the QoS parameter corresponding to the first data packet sent through the wireless direct connection communication interface to which the NR is applied is QFI and/or 5QI; the first layer of the first communication device determines that the QoS parameter corresponding to the first data packet sent through the wireless direct connection communication interface applying LTE is the service priority PPPP and/or the service reliability requirement PPPR.

In a fourth aspect, a communication method is provided that includes a first communication device determining a first radio access technology for transmitting a first data packet; the first communication device determines a first QoS parameter corresponding to the first data packet according to the first radio access technology; the first communication device sends a first data packet to the second communication device through a first wireless direct connection communication interface applying a first wireless access technology according to the first QoS parameter; the first communication device has the capability of data transmission through a first wireless direct communication interface applying a first wireless access technology and has the capability of data transmission through a second wireless direct communication interface applying a second wireless access technology, and the first wireless direct communication interface and the second wireless direct communication interface are communication interfaces between the first communication device and other communication devices.

Based on the scheme, the first communication device has two capabilities of performing data transmission through the wireless direct connection communication interface applying the wireless access technology, when the first data packet is determined to be sent by using the first wireless direct connection communication interface, the first QoS parameter corresponding to the first data packet can be determined, and the first wireless direct connection communication interface can identify the first QoS parameter. Therefore, when the first wireless direct connection communication interface using the first wireless access technology sends the first data packet, the existing mechanism for determining the QoS parameters can be not changed, and the first QoS parameters which can be identified by the first wireless direct connection communication interface can be determined as required.

In a first implementation manner, the first communication device acquires indication information, and the first communication device determines, according to the indication information, a first radio access technology used for sending a first data packet, where the indication information is used for indicating a first radio access technology corresponding to a first service, and the first data packet belongs to the first service.

For the first implementation manner, the indication information includes a first radio access technology and/or a first service, and a mapping relationship exists between the first service and the first radio access technology.

In a possible implementation manner, if the first radio access technology is an LTE technology, the first communication device determines that a first QoS parameter corresponding to the first data packet is PPPP and/or PPPR; if the first radio access technology is an NR technology, the first communication device determines that the first QoS parameter corresponding to the first packet is QFI and/or 5QI.

Optionally, the indication information further includes a communication type, and the communication type includes broadcast, multicast, or unicast. In a possible implementation manner, the first communication device determines a communication type corresponding to a first service to which the first data packet belongs, and the first communication device determines the first QoS parameter according to the first radio access technology and the communication type. For the situation that the first radio access technology is an NR technology, if the communication type is unicast or multicast, the first communication device determines that the first QoS parameter is QFI; if the communication type is broadcast, the first communication device determines that the first QoS parameter is 5QI. In this way, when the communication type is unicast or multicast, the first QoS parameter is identified by the QFI, which helps to reduce the transmission amount of data of the first communication device.

In a second implementation manner, the first communication device obtains auxiliary information, and the first communication device determines, according to the auxiliary information, a first radio access technology used for transmitting the first data packet, where the auxiliary information includes at least one of: the method comprises the steps that channel busy rates corresponding to wireless direct connection communication interfaces of different wireless access technologies respectively, priorities corresponding to the wireless direct connection communication interfaces of the different wireless access technologies respectively, and wireless direct connection communication interfaces of wireless access technologies supported by a current cell covering a first communication device are respectively obtained; illustratively, the first radio access technology is any one of radio access technologies.

In a fifth aspect, the present application provides a communication method, including: the first communication device determines a second quality of service (QoS) parameter corresponding to the first data packet; the first communication device acquires a mapping relation between a first QoS parameter and a second QoS parameter; the first communication device determines a first QoS parameter corresponding to the first data packet according to the second QoS parameter and the mapping relation, wherein the first QoS parameter corresponds to a first wireless access technology; the first communication device transmits a first packet to the second communication device through the first wireless direct access port to which the first radio access technology is applied, according to the first QoS parameter.

In one possible implementation, the first communications device determines a first radio access technology for transmitting the first data packet, the first radio access technology corresponding to the first QoS parameter; the first communication device determines the first QoS parameter according to the second QoS parameter, the mapping relation and the first radio access technology.

In a possible implementation manner, the first communication device obtains indication information, where the indication information is used to indicate a first radio access technology corresponding to the first service, and the first communication device determines, according to the indication information, the first radio access technology used to send a first data packet, where the first data packet belongs to the first service.

In a sixth aspect, a communication method provided in the present application includes: the method comprises the steps that a first communication device determines quality of service (QoS) parameters corresponding to first data packets sent through wireless direct connection communication interfaces applying different wireless access technologies; the first communication device determines a first QoS parameter according to different QoS parameters corresponding to the first data packet, wherein the first QoS parameter corresponds to a first wireless access technology; the first communication device sends a first data packet to the second communication device through a first wireless direct connection communication interface applying a first wireless access technology according to the first QoS parameter.

In a first implementation manner, a first QoS parameter corresponding to a first data packet is selected from the QoS parameter class to be transmitted.

The first communication device determines different QoS parameters corresponding to the first data packet, and the first communication device determines the QoS parameters meeting preset conditions in the different QoS parameters corresponding to the first data packet as the first QoS parameters.

The first communication device determines a radio access technology corresponding to the first service, wherein the radio access technology is the first radio access technology, and the first data packet belongs to the first service; the first communication device determines the QoS parameter corresponding to the first wireless access technology from different QoS parameters corresponding to the first data packet, and the QoS parameter is the first QoS parameter.

For the second implementation manner, in a possible implementation manner, the first communication device acquires indication information, where the indication information is used to indicate a first radio access technology corresponding to the first service; and the communication device determines that the first service corresponds to the first radio access technology according to the indication information.

In a possible implementation manner, the different radio access technologies include NR and LTE, and the first communication device determines that the QoS parameter corresponding to the first data packet sent through the wireless direct connection communication interface to which the NR is applied is QFI and/or 5QI; the first communication device determines that the QoS parameter corresponding to the first data packet sent through the wireless direct connection communication interface applying LTE is PPPP and/or PPPR.

In a seventh aspect, a communication method provided by the present application includes determining, by a first layer of a first communication device, a first radio access technology used for sending a first data packet, determining, by the first layer of the first communication device, a first QoS parameter corresponding to the first data packet according to the first radio access technology, and sending, by a second layer of the first communication device, the first data packet to a second communication device through a first wireless direct connection communication interface to which the first radio access technology is applied according to the first QoS parameter. The first communication device has a capability of data transmission through a first wireless direct connection communication interface applying the first wireless access technology and a capability of data transmission through a second wireless direct connection communication interface applying a second wireless access technology, and the first wireless direct connection communication interface and the second wireless direct connection communication interface are communication interfaces between the first communication device and other communication devices.

For possible implementation manners in this embodiment, reference may be made to the content of the first aspect described above, and details are not described here.

Based on the scheme, the first communication device has two capabilities of performing data transmission through the wireless direct connection communication interface applying the wireless access technology, when the second layer of the first communication device determines to use the first wireless direct connection communication interface to send the first data packet, the first layer of the first communication device is informed, so that the first layer of the first communication device can determine a first QoS parameter corresponding to the first data packet, the first layer of the first communication device sends the first QoS parameter to the second layer of the first communication device, and the second layer of the first communication device sends the first data packet according to the first QoS parameter. That is, when the second layer of the communication device is lost and the first wireless direct connection communication interface using the first wireless access technology sends the first data packet, the existing mechanism for determining the QoS parameter is not changed through the interaction between the first layer and the second layer of the first communication device, and the first QoS parameter that can be identified by the first wireless direct connection communication interface is determined as required.

In an eighth aspect, a communication method provided by the present application includes determining, by a first layer of a first communication device, a second QoS parameter corresponding to a first packet, acquiring, by a second layer of the first communication device, a mapping relationship between the first QoS parameter and the second QoS parameter, determining, by a second layer of the first communication device, a first QoS parameter corresponding to the first packet according to the second QoS parameter and the mapping relationship, and sending, by the second layer of the first communication device, the first packet to a second communication device through a first wireless direct connection port applying a first radio access technology according to the first QoS parameter.

For possible implementation manners in this embodiment, reference may be made to the content of the second aspect described above, and details are not described here.

Based on the scheme, the second layer of the first communication device obtains a mapping relation between a first QoS parameter and a second QoS parameter, and when the first layer of the first communication device determines that the second QoS parameter corresponds to the first data packet, and the second layer of the first communication device sends the first data packet by using the first wireless direct connection interface of the first wireless access technology, the first QoS parameter can be determined according to the mapping relation and the second QoS parameter, that is, the second layer of the first communication device obtains the first QoS parameter which can be identified, and performs communication according to the first QoS parameter which can be identified.

In a ninth aspect, a communication method provided by the present application includes determining, by a first layer of a first communication device, a second QoS parameter corresponding to a first packet, acquiring, by the first layer of the first communication device, a mapping relationship between the first QoS parameter and the second QoS parameter, determining, by the first layer of the first communication device, a first radio access technology used for transmitting the first packet, determining, by the first layer of the first communication device, the first QoS parameter corresponding to the first packet according to the second QoS parameter, the mapping relationship, and the first radio access technology, and transmitting, by the first layer of the first communication device, the first QoS parameter to a second layer of the first communication device, so that the second layer of the first communication device transmits the first packet to a second communication device through a first wireless direct connection port using the first radio access technology according to the first QoS parameter.

Based on the scheme, the first layer of the first communication device determines the first QoS parameter according to the mapping relation between the first QoS parameter and the second QoS parameter, the second QoS parameter corresponding to the first data packet and the first radio access technology for sending the first data packet, and sends the first QoS parameter to the second layer of the first communication device, so that the second layer of the first communication device obtains the identifiable first QoS parameter, and carries out communication according to the identifiable first QoS parameter.

In a tenth aspect, a communication method provided by the present application includes determining, by a first layer of a first communication device, qoS parameters respectively corresponding to first data packets sent through wireless direct communication interfaces applying different wireless access technologies, determining, by a second layer of the first communication device, the first QoS parameters according to different QoS parameters corresponding to the first data packets, and sending, by the second layer of the first communication device, the first data packets to a second communication device through the first wireless direct communication interface applying the first wireless access technology according to the first QoS parameters.

Based on the scheme, the first layer of the first communication device firstly determines the QoS parameters respectively corresponding to the first data packets sent through the wireless direct connection communication interfaces applying different wireless access technologies, then sends different QoS parameters to the second layer, and the second layer of the first communication device selects the first QoS parameters from the different QoS parameters. And may help to reduce the number of inter-layer interactions between the first layer of the first communication device and the second layer of the first communication device, helping to simplify the implementation of the first communication device.

In an eleventh aspect, a communication device is provided that includes a first wireless direct communication interface, a second wireless direct communication interface, and a processor. Optionally, a memory may also be included. The communication device has the capability of data transmission through a first wireless direct communication interface applying the first wireless access technology and has the capability of data transmission through a second wireless direct communication interface applying a second wireless access technology. When the communication device includes a memory, the memory is for storing instructions; the processor is used for controlling the first wireless direct communication interface or the second wireless direct communication interface to transmit data according to the instructions stored in the execution memory, the communication device is configured to perform any one of the above-mentioned first aspect, any one of the method of the first aspect, the second aspect, any one of the method of the second aspect, the third aspect, any one of the method of the third aspect, the fourth aspect, any one of the method of the fourth aspect, the fifth aspect, any one of the method of the fifth aspect, the sixth aspect, any one of the method of the sixth aspect, the seventh aspect, any one of the method of the seventh aspect, the eighth aspect, any one of the method of the eighth aspect, the ninth aspect, any one of the method of the ninth aspect, the tenth aspect, or the tenth aspect.

For example, the communication device provided by the present application may be a terminal device having a corresponding function, or may be a vehicle having a corresponding communication function, or may be a vehicle-mounted communication device or a communication chip having a corresponding communication function, or may be a chip for implementing a corresponding communication function, and the chip may be applied to the terminal device or the vehicle-mounted communication device having a corresponding communication function.

In a twelfth aspect, the present application provides a communication device, configured to implement any one of the above-mentioned first aspect, any one of the first aspect, second aspect, any one of the second aspect, third aspect, any one of the third aspect, fourth aspect, any one of the fourth aspect, fifth aspect, any one of the fifth aspect, sixth aspect, any one of the sixth aspect, seventh aspect, any one of the seventh aspect, eighth aspect, any one of the eighth aspect, ninth aspect, any one of the ninth aspect, tenth aspect, or tenth aspect, including corresponding functional modules, respectively configured to implement the steps of the above methods. The functions may be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-described functions.

In some possible designs, the structure of the communication device includes a processing unit and multiple interfaces, and these units and interfaces may perform corresponding functions in the foregoing method example, which is specifically referred to the detailed description in the method example and will not be described herein again.

For example, the functions of the first layer in the communication device and the functions of the second layer in the communication device may be implemented by corresponding software modules, or hardware circuits, or hardware executing software.

In a thirteenth aspect, the present application provides a computer storage medium having instructions stored therein, which when run on a computer, cause the computer to perform the method of the first aspect, the method of any possible implementation of the first aspect, the method of the second aspect, any possible implementation of the second aspect, the method of the third aspect, the method of any possible implementation of the fourth aspect, the method of the fourth aspect, the fifth aspect, the method of any possible implementation of the fifth aspect, the method of the sixth aspect, or the method of any possible implementation of the sixth aspect, the seventh aspect, the method of any possible implementation of the seventh aspect, the eighth aspect, the method of any possible implementation of the eighth aspect, the ninth aspect, or the method of any possible implementation of the ninth aspect, the tenth aspect, or the method of any possible implementation of the tenth aspect.

In a fourteenth aspect, the present application provides a computer program product containing instructions that, when run on a computer, cause the computer to perform the method of the first aspect, the method of any possible implementation of the first aspect, the second aspect, the method of any possible implementation of the second aspect, the third aspect, the method of any possible implementation of the third aspect, the fourth aspect, the method of any possible implementation of the fourth aspect, the fifth aspect, the method of any possible implementation of the fifth aspect, the sixth aspect, the method of any possible implementation of the sixth aspect, the seventh aspect, the method of any possible implementation of the seventh aspect, the eighth aspect, the method of any possible implementation of the eighth aspect, the ninth aspect, the method of any possible implementation of the ninth aspect, the tenth aspect, or the method of any possible implementation of the tenth aspect.

Drawings

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

fig. 2 is a schematic flowchart of a communication method according to an embodiment of the present application;

fig. 3 is a schematic flowchart of another communication method according to an embodiment of the present application;

fig. 4 is a schematic flowchart of another communication method provided in the embodiment of the present application;

fig. 5 is a schematic diagram illustrating various layers of a communication device according to an embodiment of the present disclosure;

fig. 6 is a schematic flowchart of another communication method according to an embodiment of the present application;

fig. 7 is a schematic flow chart of a communication process provided in an embodiment of the present application;

fig. 8 is a schematic flow chart of another communication process provided in the embodiment of the present application;

fig. 9 is a schematic flowchart of another communication method according to an embodiment of the present application;

fig. 10 is a schematic flow chart of another communication process provided in the embodiment of the present application;

fig. 11 is a schematic flowchart of another communication method according to an embodiment of the present application;

fig. 12 is a schematic flow chart of another communication process provided in the embodiment of the present application;

fig. 13 is a schematic flowchart of another communication method according to an embodiment of the present application;

fig. 14 is a schematic flow chart of another communication process provided in the embodiment of the present application;

fig. 15 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 16 is a schematic structural diagram of a communication device according to an embodiment of the present application.

Detailed Description

Fig. 1 is a schematic diagram illustrating an architecture of a communication system to which an embodiment of the present application is applicable. The communication system may include a network device and a communication apparatus. Fig. 1 illustrates an example in which a communication system includes one network device and two communication apparatuses. As shown in fig. 1, the communication system includes a network apparatus 100, a communication device 101, and a communication device 102.

The network device 100 may communicate with the communication apparatus 101 and the communication apparatus 102 in a wireless manner, for example, may communicate over a Uu air interface.

The communication apparatus 101 and the communication apparatus 102 may communicate with each other in a wireless manner, for example, the communication may be transmitted over a Sidelink (SL) air interface, which may also be referred to as a wireless direct communication interface or a Sidelink air interface. Where a sidelink is defined for direct communication between communication device 101 and communication device 102. That is, the communication between the communication device 101 and the communication device 102 does not require forwarding through the base station. The communication device has the capability of data transmission through a wireless direct communication interface applying a wireless access technology, the wireless direct communication interface being a communication interface between the communication device 101 or the communication device 102, respectively, and another communication device, or a communication interface between the communication device 101 and the communication device 102.

A communication device (e.g., communication device 101, communication device 102 in fig. 1) may support a first radio access technology and a second radio access technology. It may also be understood that the communication device has the capability of data transmission over a first wireless direct communication interface applying a first wireless access technology and has the capability of data transmission over a second wireless direct communication interface applying a second wireless access technology, the first and second wireless direct communication interfaces being communication interfaces between the communication device and other communication devices.

For example, the communication device 101 may transmit data to the communication device 102 using the first wireless direct communication interface of the first radio access technology of the communication device 101. Accordingly, the communication device 102 may receive data using a first wireless direct communication interface of a first radio access technology of the communication device 102.

As another example, the communication device 102 may send data to the communication device 101 using the first wireless direct communication interface of the first radio access technology of the communication device 102. Accordingly, the communication device 101 may receive data using a first wireless direct communication interface of a first radio access technology of the communication device 101.

The communication system architecture may be that of a V2X communication system. The communication system of the embodiment of the present application may be an LTE wireless communication system, or an NR wireless communication system, or the like. The radio access technology adopted in the LTE radio communication system is an LTE technology, and the radio access technology adopted in the NR radio communication system is an NR technology.

The NR wireless communication system may also be referred to as a fifth generation (5 g) wireless communication technology.

The network device may be an evolved node b eNB in an LTE wireless communication system, and may be a base station gNB in an NR wireless communication system.

The communication device may be, for example, an on-board device, a road side infrastructure (such as a traffic light, a traffic camera, a road test unit, etc.), a mobile phone, a tablet computer, etc. The communication device may support LTE V2X communication and NR V2X communication. The communication apparatus can operate in an LTE wireless communication system and an NR wireless communication system, respectively, and can also switch from the LTE wireless communication system to the NR wireless communication system, or from the NR wireless communication system to the LTE wireless communication system. The communication device may not operate in the communication system, that is, the communication device is out of the cell coverage, and when the communication device is out of the cell coverage, the communication may be performed through the SL air interface. Wherein, the communication device can simultaneously carry out a plurality of services, and different services can have different QoS requirements.

It is to be understood that the terms "first," "second," and the like in the embodiments of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. "and/or" is used to describe the association relationship of the associated object, indicating that there may be three relationships, for example, "a and/or B" may indicate: only A, only B and both A and B are present, wherein A and B may be singular or plural.

A communication method provided by the present application for solving the problems in the background art will be described below with reference to fig. 1. The first communication device may be the communication device 101 in fig. 1, and the second communication device may be the communication device 102 in fig. 1. Alternatively, the first communication device may be the communication device 102 of fig. 1 described above, and the second communication device may be the communication device 101 of fig. 1 described above. The first communication device and the second communication device may perform communication based on the first service, and any data packet sent by the first communication device to the second communication device may be referred to as a first data packet, and the first data packet may be one data packet in a video data stream. The data packet may be a data packet in a picture data stream, a data packet in a voice data stream, or a data packet in another data stream. The wireless access technology refers to a wireless medium connecting a first communication device with a network device or a second communication device respectively to realize transmission of data packets. The radio access technology may also be referred to as a communication system, including but not limited to LTE technology and NR technology. In one possible implementation, the first communication device and the second communication device may both support two radio access technologies, LTE technology and NR technology, respectively. If the first radio access technology is an LTE technology, the second radio access technology is an NR technology; if the first radio access technology is an NR technology, the second radio access technology is an LTE technology.

It should be noted that, in the present application, the QoS parameter corresponding to the NR V2X SL is not specifically limited, and for convenience of understanding, the following embodiments take QFI and/or 5QI as examples for description, where, for example, the 5QI may be a 5QI dedicated for V2X, may be different from or the same as the 5QI on the Uu interface, and is not specifically limited in the present application.

As shown in fig. 2 to fig. 12, the flow diagrams of different communication methods provided by the present application can be used to solve the problems in the background art. Wherein fig. 2-4 are different implementations introduced from the perspective of a communication device, and fig. 5-12 are different implementations introduced from the perspective of interaction between internal layers of a communication device. The following are described separately.

Fig. 2 is a schematic flow chart of a communication method provided in the present application. The method comprises the following steps:

in step 201, a first communications device determines a first radio access technology for transmitting a first data packet.

By way of example, the present application provides two implementations for determining a first radio access technology for transmitting a first data packet.

Implementation mode one

The first communication device may obtain indication information, and determine a first radio access technology used for sending a first data packet according to the indication information, for example, the indication information is used for indicating the first radio access technology corresponding to the first service, and the first data packet belongs to the first service. In this application, the first service may also be an identifier service, and may also identify a service type, which is not limited in this application. In one possible implementation manner, the first communication apparatus may acquire the first indication information from the base station, may acquire the indication information from a core network (for example, a CF node in the core network or another node having a V2X control function), or may configure the first indication information by itself.

In one possible implementation, the indication information may include the first radio access technology. A mapping relationship exists between the first radio access technology and the first service. Illustratively, the indication information includes a plurality of sequentially arranged radio access technologies, the first communication device may acquire the plurality of sequentially arranged services, an order of the radio access technology list coincides with an order of the service list, and each item in the default radio access list corresponds to each item in the radio access technology list in a one-to-one manner. After the first communication device obtains the sequentially arranged wireless access technologies and the first data packet, first determining a first service to which the first data packet belongs, and determining that the item at the same position in the wireless access technology list is the first wireless access technology corresponding to the first service according to the position of the first service in the service list.

In another possible embodiment, the indication information comprises the first service. A mapping relationship exists between the first service and the first radio access technology. Illustratively, the radio access technology corresponding to the first service included in the indication information is a first radio access technology, and the radio access technology corresponding to the service not included in the indication information is a second radio access technology. Or, the radio access technology corresponding to the first service included in the indication information is the second radio access technology, and the radio access technology corresponding to the service not included in the indication information is the first radio access technology. The first communication device determines that the first data packet belongs to the first service, and then determines that the radio access technology used for transmitting the first data packet is the first radio access technology.

In yet another possible implementation, the indication information may include a first service and a first radio access technology, and a mapping relationship exists between the first service and the first radio access technology. When the first communication device determines that the first data packet belongs to the first service, the first radio access technology having a mapping relation with the first service can be directly determined.

Implementation mode two

The first communication device obtains the assistance information and determines a first radio access technology for transmitting the first data packet according to the assistance information. The auxiliary information includes at least one of: channel Busy Rates (CBR) respectively corresponding to wireless direct connection communication interfaces of different wireless access technologies, priorities respectively corresponding to the wireless direct connection communication interfaces of different wireless access technologies, and wireless direct connection communication interfaces covering wireless access technologies supported by a current cell of a first communication device; illustratively, the first radio access technology is any one of radio access technologies.

In some embodiments, the first communication device may determine to transmit the first data packet over LTE V2X SL if the current cell covering the first communication device supports only LTE V2X. If the current cell covering the first communication device supports only NR V2X, the first communication device may determine to send the first data packet through NR V2X SL.

In other embodiments, the radio access technologies supported by the current cell covering the first communication device may not be considered, i.e. may be understood as LTE V2X and NR V2X supported by the current cell covering the first communication device. The first communication device may determine the first radio access technology for sending the first data packet according to the measurement result of the direct connection communication interface of the different radio access technologies and/or the priority of the direct connection communication interface of the different radio access technologies. The measurement result may be CBR. For example, in implementation a, if the first communication device determines that the measurement result of LTE V2X SL is worse than the measurement result of NR V2X SL, for example, CBR corresponding to LTE V2X SL is greater than CBR corresponding to NR V2X SL, that is, LTE V2X SL has a higher load than NR V2X SL, it may determine that the first packet is transmitted by NR V2X SL, that is, it is determined that the first radio access technology for transmitting the first packet is NR technology. In implementation b, if the first communication device determines that the measurement result of LTE V2X SL is better than the measurement result of NR V2X SL, for example, the first communication device determines that CBR corresponding to LTE V2X SL is not greater than CBR corresponding to NRV2X SL, that is, the LTE V2X SL load is lower than the NR V2X SL load, it may determine that the first packet is transmitted by LTE V2X SL, that is, it is determined that the first radio access technology for transmitting the first packet is LTE technology. In implementation manner c, if the first communication device determines that the measurement result of LTE V2X SL is poor and determines that the measurement result of NR V2X SL is good, for example, the first communication device determines that CBR corresponding to LTE V2X SL satisfies the first threshold and CBR corresponding to NR V2X SL does not satisfy the second threshold, the first radio access technology for sending the first packet may be determined to be NR technology. In implementation d, if the first communication device determines that the measurement result of the LTE V2X SL is better and determines that the measurement result of the NR V2X SL is worse, for example, the first communication device determines that the CBR corresponding to the LTE V2X SL does not satisfy the first threshold and the CBR corresponding to the NR V2X SL satisfies the second threshold, it may be determined that the first radio access technology used for sending the first packet is the LTE technology. In the implementation mode e, for some V2X services, LTE V2X SL takes precedence; for other V2X services, NR V2X SL prioritization, etc., in one possible implementation, the first communication device may first obtain the configuration of RAT V2X SL priorities corresponding to the V2X services from a core network or a base station or locally. In the implementation manner f, if the first communication device determines that the measurement result of the LTE V2X SL and the measurement result of the NR V2X SL are relatively close to each other, for example, the first communication device determines that the CBR corresponding to the LTE V2X SL does not satisfy the first threshold and the CBR corresponding to the NR V2X SL satisfies the second threshold, the priority of the first service to which the first packet belongs may be determined.

In the present application, the auxiliary information acquired by the first communication apparatus may be quality information of the detected V2X SL, for example, CBR of the LTE V2X SL and the NR V2X SL is measured, or a measurement result is obtained based on other reference signals, for example, a measurement result obtained by measuring based on a Channel State Information (CSI) reference signal or a synchronization channel block (SSB). It is also possible that the first communication device defines the priority of the different V2X services according to preset rules.

Step 202, the first communication device determines a first QoS parameter corresponding to the first data packet according to the first radio access technology.

In one possible implementation, different RATs SL may have different QoS-specifying mechanisms, which may cause the QoS parameters to be different under different radio access technologies. Exemplarily, if the first radio access technology is an LTE technology, the first communication device determines that the first QoS parameter corresponding to the first data packet is PPPP and/or PPPR; if the first radio access technology is an NR technology, the first communication device determines that the first QoS parameter corresponding to the first packet is QFI and/or 5QI.

Optionally, the first communication device may determine a communication type corresponding to the first service to which the first data packet belongs, and determine the first QoS parameter according to the first radio access technology and the communication type, where the communication type includes broadcast, multicast, or unicast. In one possible implementation, the first communication device determines the first QoS parameter to be QFI if the first radio access technology is an NR technology and the communication type is unicast or multicast, and determines the first QoS parameter to be 5QI if the first radio access technology is an NR technology and the communication type is broadcast. In this way, when the communication type is unicast or multicast, the first communication device in the communication process can know what the QoS requirement corresponding to the QFI is specifically through previous configuration interaction, and therefore, the first QoS parameter can be identified by the QFI, which is beneficial to reducing the transmission amount of data of the first communication device. For the broadcast service, there is no negotiation between both communication parties, so the communication device at the transmitting end carries 5QI information when transmitting data, and the communication device at the receiving end can directly know the corresponding QoS requirement through 5QI without relying on prior negotiation.

Step 203, the first communication device sends a first data packet to the second communication device through the first wireless direct connection communication interface applying the first wireless access technology according to the first QoS parameter.

For example, if the first communication device determines that the first QoS parameter is PPPP and/or PPPR, the first communication device sends the first data packet to the second communication device through the wireless direct connection communication interface using LTE according to the PPPP and/or PPPR.

For another example, if the first communication device determines that the first QoS parameter is QFI and/or 5QI, the first communication device sends the first data packet to the second communication device through the wireless direct communication interface using NR according to QFI and/or 5QI.

In the present application, it is not limited that the first communication device transmits the first packet to the second communication device, that is, the first communication device may transmit data in a broadcast, unicast, or multicast manner. For the broadcast communication method, the first communication device transmits data in a broadcast manner, and the receiving communication device may be any second communication device interested in the V2X service or the V2X service type to which the data belongs.

As can be seen from steps 201 to 203, the first communication device has two capabilities of performing data transmission through the wireless direct connection communication interface applying the wireless access technology, and when it is determined that the first data packet is sent through the first wireless direct connection communication interface, the first QoS parameter corresponding to the first data packet may be determined, and the first wireless direct connection communication interface may identify the first QoS parameter. Therefore, when the first wireless direct connection communication interface using the first wireless access technology sends the first data packet, the existing mechanism for determining the QoS parameters can be not changed, and the first QoS parameters which can be identified by the first wireless direct connection communication interface can be determined as required.

In a possible scenario, the cellular network where the first communication device is currently located is a cellular network of the second radio access technology, that is, the core network to which the first communication device is currently connected is a core network of the second radio access technology, but the first communication device selects the first wireless direct connection communication interface applying the first radio access technology to send the first data packet to the second communication device. For example, if the cellular network where the first communication device is currently located is an NR network (i.e. in a 5G system), the connected core network is an NR core network, i.e. a fifth generation core network (5) ^th generation core,5 GC), but the first communication device chooses to communicate with LTE V2X SL. Or, if the cellular network where the first communications apparatus is currently located is an LTE network (i.e. in a 4G system), the connected core network is an Evolved Packet Core (EPC), but the first communications apparatus chooses to use NR V2X SL for communication. For this scenario, FIG. 3 is the bookThe application provides another communication method flow diagram. As shown in fig. 3, the method comprises the steps of:

in step 301, the first communications device determines a second QoS parameter corresponding to the first data packet.

For example, the first communication device may determine the second QoS parameter corresponding to the first packet according to a radio access technology of a cellular network in which the first communication device is currently located. Exemplarily, if the cellular network where the first communication device is currently located is an NR network and the connected core network is a 5GC network, it may be determined that the second QoS parameter corresponding to the first packet is QFI and/or 5QI. If the cellular network in which the first communication device is currently located is an LTE network, that is, the connected core network is an EPC, it may be determined that the second QoS parameter corresponding to the first packet is PPPP and/or PPPR. It can also be understood that the cellular network where the first communication device is currently located is an NR network, the first communication device may map out QFI and/or 5QI by default; the cellular network in which the first communication device is currently located is an LTE network, and the first communication device may map out PPPP and/or PPPR by default.

In step 302, the first communication device obtains a mapping relationship between the first QoS parameter and the second QoS parameter.

For example, the mapping relationship between the first QoS parameter and the second QoS parameter may be obtained by the first communication device from the base station, obtained from a V2X Control Function (CF) node of the core network, or configured by the first communication device itself. In one possible implementation, the first communication device may configure the mapping relationship between the first QoS parameter and the second QoS parameter according to a preset rule specified by a protocol.

Step 301 and step 302 are not in sequence, and step 301 may be executed first, and then step 302 may be executed; step 301 may be executed first, and then step 302 may be executed; or step 301 and step 302 are performed together.

Step 303, the first communication device determines a first QoS parameter corresponding to the first data packet according to the second QoS parameter and the mapping relationship.

Illustratively, the first QoS parameter corresponds to a first radio access technology.

In a possible implementation manner, if the first communication device determines that the second QoS parameter is QFI and/or 5QI, the first communication device maps the PPPP and/or PPPR corresponding to the first packet according to the mapping relationship between QFI and/or 5QI and PPPP and/or PPPR. If the first communication device determines that the second QoS parameter is PPPP and/or PPPR, the first communication device maps the QFI and/or 5QI corresponding to the first packet according to the mapping relationship between the QFI and/or 5QI and the PPPP and/or PPPR.

In one possible implementation, the first communication device determines a first radio access technology used for transmitting the first data packet, and determines the first QoS parameter according to the second QoS parameter, the mapping relation and the first radio access technology, wherein the first radio access technology corresponds to the first QoS parameter. Optionally, the determination of the first radio access technology for transmitting the first data packet by the first communication device may refer to the description of the first implementation manner and the second implementation manner in step 201 in fig. 2, and details are not described here again.

In step 304, the first communication device transmits a first data packet to the second communication device through the first wireless direct access port using the first radio access technology according to the first QoS parameter.

This step can be referred to the description of step 203 in fig. 2, and is not described herein again.

As can be seen from steps 301 to 304, the second QoS parameter of the first packet is determined, and when it is determined that the first communication device transmits the first packet using the first wireless direct connection interface of the first wireless access technology, because the first wireless access technology corresponds to the first QoS parameter, the second QoS parameter can be mapped to the first QoS parameter through the mapping relationship between the first QoS parameter and the second QoS parameter, so that the first communication device transmits the first packet to the second communication device through the first wireless direct connection interface of the first wireless access technology according to the first QoS.

Fig. 4 is a schematic flowchart illustrating another communication method provided in an embodiment of the present application. As shown in fig. 4, the method comprises the steps of:

step 401, a first communication device determines QoS parameters corresponding to first data packets respectively sent through wireless direct connection communication interfaces applying different wireless access technologies.

Illustratively, the QoS parameter applied when the wireless direct communication interface of the NR transmits the first data packet is QFI and/or 5QI; the QoS parameter applied when the wireless direct communication interface of the LTE sends the first data packet is PPPP and/or PPPR. In a possible implementation manner, the first communication device may determine to send the QFI and/or 5QI corresponding to the first data packet through the wireless direct communication interface applying NR, and send the PPPP and/or PPPR corresponding to the first data packet through the wireless direct communication interface applying LTE.

Step 402, the first communication device determines a first QoS parameter according to different QoS parameters corresponding to the first data packet.

By way of example, two implementations for determining the first QoS parameter are provided herein.

Implementation method 1

The first communication device determines different QoS parameters corresponding to the first data packet, and determines the QoS parameter meeting preset conditions in the different QoS parameters corresponding to the first data packet as the first QoS parameter. For example, the first communication device determines two different sets of QoS parameters, which are PPPP and/or PPPR and QFI and/or 5QI, respectively, and determines PPPP and/or PPPR as the first QoS parameter if the PPPP and/or PPPR satisfies a first preset condition and/or the QFI and/or 5QI satisfies a second preset condition; and if the PPPP and/or the PPPR meet a third preset condition and/or the QFI and/or the 5QI meet a fourth preset condition, determining the QFI and/or the 5QI as the first QoS parameter. The first preset condition, the second preset condition, the third preset condition, and the fourth preset condition may be obtained by the first communication device from the core network, may also be obtained by the base station, or may also be configured by the first communication device according to a protocol preset rule.

Implementation method two

The first communication device determines that a radio access technology corresponding to a first service is a first radio access technology, and determines that a QoS parameter corresponding to the first radio access technology is a first QoS parameter from different QoS parameters corresponding to a first data packet, wherein the first data packet belongs to the first service. For the implementation manner of determining, by the first communications apparatus, the radio access technology corresponding to the first service, reference may be made to the first implementation manner and the second implementation manner in step 201, which are not described herein again.

In step 403, the first communication device sends a first data packet to the second communication device through the first wireless direct communication interface applying the first radio access technology according to the first QoS parameter.

As can be seen from steps 401 to 403, the first communication device may first determine QoS parameters corresponding to the first data packets sent through the wireless direct connection communication interfaces applying different wireless access technologies, and then select the first QoS parameter from the different QoS parameters, so that the first communication device may flexibly select the required first QoS parameter according to actual needs.

Fig. 5 schematically illustrates an architecture diagram of each hierarchy of a communication device according to an embodiment of the present application. The communication device in this example may be any one of the communication device 101 and the communication device 102 in fig. 1 described above, or may be any one of the first communication devices in fig. 2 to 4 described above. As shown in fig. 5, the architecture of the communication apparatus includes a first layer 501, a second layer 502, and a third layer 503. In any of the embodiments described below, the first layer may be a truck-to-all V2X layer, the second layer may be an AS layer, and the third layer may be an application layer. Fig. 5 is only an example, and there may be other layers besides the three layers illustrated in the figure, and the present invention is not limited thereto.

A first layer 501 for determining QoS parameters.

The second layer 502 is primarily for the communication device to communicate with other communication devices and/or network equipment (e.g., base stations). For example, the connection may be made using a transmission medium such as optical fiber, twisted pair, wireless access technology, or the like. In one possible implementation, the second layer 502 may include an Access Stratum (AS) 502a of Uu port, an Access Stratum 502b of LTE V2X, and an Access Stratum 502c of NR V2X. The access stratum 502a of the Uu port is configured to receive information from the network device, for example, receive resource information and/or configuration information allocated by the network device for the first communication apparatus. Illustratively, the access stratum 502a of the Uu interface may be a Radio Resource Control (RRC) layer of the Uu interface. The access stratum 502b of LTE V2X is used to receive the PPPP and/or PPPR of the transmission from the first layer 501; the NR V2X access stratum 502c is configured to receive 5QI and/or QFI from the first stratum 501.

In the present application, the QoS parameter is transmitted from the first layer 501 of the first communication apparatus to the second layer 502 of the first communication apparatus, and the following three cases can be divided. The first situation is as follows: when the first layer of the first communication device sends the first data packet to the access layer 502b of the LTE V2X, the QoS parameter carried is PPPP and/or PPPR. Case two: when the first layer of the first communication device transmits the first packet to the NR V2X access layer 502c, the QoS parameter carried is QFI and/or 5QI. Case three: when the first layer 501 of the first communication device sends the first data packet to the second layer 502, the QoS parameters carried by the first layer include PPPP and/or PPPR, and QFI and/or 5QI. Case three may also be: when the first layer of the first communication device transmits the first packet to the access stratum 502c of the NR V2X, the QoS parameters carried are QFI and/or 5QI, and PPPP and/or PPPR, and when the first packet is transmitted to the access stratum 502b of the LTE V2X, the QoS parameters carried are QFI and/or 5QI, and PPPP and/or PPPR. Case three is for the case where the first layer 501 of the first communication device cannot recognize the access layer 502b of LTE V2X and the access layer 502c of NR V2X in the second layer 502.

For the first situation, the access layer 502b of the LTE V2X of the first communication device sends the first data packet to the second communication device through the wireless direct communication interface applying LTE according to the received PPPP and/or PPPR. For the second scenario, the access stratum 502c of the NR V2X of the first communication device sends the first data packet to the second communication device through the wireless direct communication interface applying NR according to the received QFI and/or 5QI. For the third situation, if the access layer 502b of the LTE V2X of the first communication device determines that the first data packet corresponds to the LTE V2X, the access layer 502c of the NR V2X of the first communication device discards the first data packet, and the access layer 502b of the LTE V2X of the first communication device sends the first data packet to the second communication device through the wireless direct connection communication interface applying the LTE according to the received PPPP and/or PPPR; if the NR V2X access layer 502c of the first communication device determines that the first packet corresponds to the NR V2X, the LTE V2X access layer 502b of the first communication device discards the first packet, and the NR V2X access layer 502c of the first communication device transmits the first packet to the second communication device through the wireless direct connection communication interface to which the NR is applied according to the received QFI and/or 5QI.

The third layer 503 generates a V2X packet and transmits the generated packet to the first layer 501.

In one possible implementation, the communication device shown in fig. 5 may have the capability of performing data transmission through a first wireless direct communication interface applying a first wireless access technology, and have the capability of performing data transmission through a second wireless direct communication interface applying a second wireless access technology, where the first wireless direct communication interface and the second wireless direct communication interface are communication interfaces between the communication device and other communication devices.

The communication method shown in fig. 2 is described with reference to the content shown in fig. 5 described above. Fig. 6 is a schematic flow chart of another communication method provided in the present application. The first communication device in this example may be either one of the communication device 101 and the communication device 102 in fig. 1, the first communication device in fig. 2, or the first communication device in fig. 5. As shown in fig. 6, the method comprises the steps of:

in step 601, a first layer of a first communication device determines a first radio access technology for transmitting a first data packet.

In one possible implementation, the second layer of the first communication device may receive the indication information from the base station, and then the second layer of the first communication device sends the received indication information to the first layer of the first communication device. Accordingly, the first layer of the first communication device receives the indication information from the second layer of the first communication device. In another possible implementation, the indication information may also be sent to the first layer of the first communication device by the CF node of the core network. In another possible implementation manner, the indication information may also be configured by the first layer of the first communication device according to the protocol preset rule.

Illustratively, in conjunction with fig. 5 above, two methods for determining a first radio access technology for transmitting a first data packet are provided, which are implementation one and implementation two, respectively.

In a first implementation manner, the first layer of the first communication device determines, according to the indication information, a first radio access technology used for sending the first data packet.

The first layer of the first communication device receives indication information from the second layer of the first communication device, and the first layer of the first communication device determines a first radio access technology for transmitting a first data packet according to the indication information, wherein the first data packet belongs to a first service, and the indication information is used for indicating the first radio access technology corresponding to the first service. The indication information is sent to the first layer of the first communication device at the second layer of the first communication device, so that the first layer of the first communication device determines a first wireless direct connection communication interface corresponding to a first wireless access technology of the first communication device for sending the first data packet, and the second layer of the first communication device determines a first QoS parameter which can be identified by the first layer of the first communication device according to the first wireless access technology.

In this embodiment, the indication information may refer to the introduction of the indication information in the first implementation manner of step 201 in fig. 2, which is not described herein again.

In a second implementation, the first layer of the first communication device determines a first radio access technology for transmitting the first data packet according to the auxiliary information.

Illustratively, the assistance information may include at least one of: channel Busy Rates (CBRs) respectively corresponding to wireless direct connection communication interfaces of different wireless access technologies, priorities respectively corresponding to wireless direct connection communication interfaces of different wireless access technologies, and wireless direct connection communication interfaces of wireless access technologies supported by a current cell covering the first communication device; illustratively, the first radio access technology is any one of radio access technologies.

In this application, the second layer of the first communication device may acquire the auxiliary information, the second layer of the first communication device may transmit the acquired auxiliary information to the first layer of the first communication device, and the first layer of the first communication device may determine the first radio access technology for transmitting the first packet according to the auxiliary information transmitted by the second layer. The second layer of the first communication device sends the auxiliary information to the first layer of the first communication device, so that the radio access technology determined by the first layer of the first communication device can better conform to a real environment.

For detailed description of the auxiliary information in this embodiment, reference may be made to the second implementation manner in step 201 in fig. 2, which is not described herein again.

In step 602, the first layer of the first communications device determines a first QoS parameter corresponding to the first data packet according to the first radio access technology.

In a possible implementation manner, if the first radio access technology is an LTE technology, the first layer of the first communication device determines that a first QoS parameter corresponding to the first data packet is PPPP and/or PPPR; if the first radio access technology is a new air interface NR technology, the first layer of the first communication device determines that the first QoS parameter corresponding to the first data packet is QFI and/or 5QI.

Optionally, the first layer of the first communication device may determine a communication type corresponding to the first service to which the first data packet belongs, where the communication type includes broadcast, multicast, or unicast. In one possible implementation, the first layer of the first communication device determines the first QoS parameter to be QFI if the first radio access technology is an NR technology and the communication type is unicast or multicast. If the first radio access technology is an NR technology and the communication type is broadcast, the first layer of the first communication device determines that the first QoS parameter is 5QI. In this way, when the communication type is unicast or multicast, the first communication device in the communication process can know what the QoS requirement corresponding to the QFI is specific through the previous configuration interaction, and therefore, the identification of the first QoS parameter by the QFI can be used, which helps to reduce the transmission amount of data of the first communication device. However, for the broadcast service, there is no negotiation between both communication parties, so the communication device at the transmitting end carries 5QI information when transmitting data, and the communication device at the receiving end can directly know the corresponding QoS requirement through the 5QI without relying on the prior negotiation.

Step 603, the second layer of the first communication device sends a first data packet to the second communication device through the first wireless direct connection communication interface applying the first radio access technology according to the first QoS parameter.

As can be seen from steps 601 to 603, the first communication device has two capabilities of performing data transmission through the wireless direct connection communication interface applying the wireless access technology, when the second layer of the first communication device determines to use the first wireless direct connection communication interface to send the first data packet, the second layer of the first communication device notifies the first layer of the first communication device, so that the first layer of the first communication device determines the first QoS parameter corresponding to the first data packet, the first layer of the first communication device sends the first QoS parameter to the second layer of the first communication device, and the second layer of the first communication device sends the first data packet according to the first QoS parameter. That is, when the second layer of the first communication device uses the first wireless direct connection communication interface of the first wireless access technology to send the first data packet, the QoS parameter management mechanism in the existing LTE V2X system may not be changed through the interaction between the first layer and the second layer of the first communication device, and the first QoS parameter that can be identified by the first wireless direct connection communication interface may be determined as needed.

For a clearer explanation of the flow of the communication method shown in fig. 6, the description may be made with reference to the first implementation manner in fig. 5 and step 601. Fig. 7 is a schematic diagram illustrating a communication process flow provided by the present application. In this example, the first layer is a V2X layer, the second layer is an AS layer, and the third layer is an application layer. As shown in fig. 7, the process includes the steps of:

in step 701, the application layer may first trigger the AS layer to establish a connection (AS shown by a dotted line).

This step is an optional step.

In step 702, the AS layer obtains the indication information.

For an exemplary detailed process of acquiring the indication information by the AS layer, reference may be made to the description of step 601 in fig. 6, and details are not described herein again.

And step 703, the AS layer sends indication information to the V2X layer.

Accordingly, the V2X layer receives indication information from the AS layer.

Step 704, the application layer sends the first data packet to the V2X layer.

Accordingly, the V2X layer receives the first packet from the application layer.

Here, the first packet belongs to a first service.

There is no sequence between the above steps 703 and 704, and step 703 may be executed first and then step 704 is executed, or step 704 may be executed first and then step 703 is executed; step 703 may also be performed together with step 704. If step 703 is performed first, the V2X layer may directly determine the first radio access technology for transmitting the first data packet after step 704. If step 704 is executed first, the first data packet needs to be buffered, and after step 704, the first radio access technology for sending the first data packet is determined.

Step 705, the V2X layer determines, according to the first service to which the first data packet belongs and the indication information, a first radio access technology for sending the first data packet.

This step can be referred to the description of the first implementation manner in step 601 in fig. 6, and is not described here again.

Step 706, the V2X layer determines a first QoS parameter corresponding to the first data packet according to the first radio access technology.

In step 707, the V2X layer sends the first QoS parameter and the first packet to the AS layer.

Accordingly, the AS layer receives the first QoS parameter and the first data packet.

In step 708, the as layer sends a first data packet to the second communication device via the first wireless direct communication interface using the first radio access technology according to the first QoS parameter.

This step can be referred to the description of step 603 in fig. 6, and is not described here again.

Optionally, with reference to the second implementation manner in fig. 5 and step 601, the first layer is still taken AS a V2X layer, the second layer is an AS layer, and the third layer is taken AS an application layer for description. Fig. 8 is a schematic diagram illustrating another communication process flow provided by the present application. As shown in fig. 8, the process includes the steps of:

in step 801, the application layer may first trigger the AS layer to establish a connection (shown by a dotted line).

This step is an optional step.

In step 802, the AS layer obtains the auxiliary information.

Here, the detailed process of acquiring the auxiliary information by the AS layer may refer to the description of step 601 in fig. 6, and is not described herein again.

Step 803, the as layer sends the auxiliary information to the V2X layer.

Accordingly, the V2X layer receives the auxiliary information from the AS layer.

Step 804, the application layer sends the first data packet to the V2X layer.

There is no sequence between the step 803 and the step 804, and the step 803 may be executed first and then the step 804 is executed, or the step 804 may be executed first and then the step 803 is executed; step 803 may also be performed together with step 804. If step 803 is performed first, the V2X layer may directly determine the first radio access technology for transmitting the first data packet after step 804. If step 804 is executed first, the first data packet needs to be buffered, and after step 804, the first radio access technology for sending the first data packet is determined.

The V2X layer may determine a first radio access technology for transmitting the first data packet according to the assistance information, step 805.

This step can be described with reference to the second implementation manner in step 601 in fig. 6, and is not described here again.

In step 806, the V2X layer may determine a first QoS parameter corresponding to the first data packet according to the first radio access technology.

In step 807, the V2X layer sends the first QoS parameter and the first packet to the AS layer.

Step 808, the as layer sends a first data packet to the second communication device via the first wireless direct communication interface applying the first radio access technology according to the first QoS parameter.

This step can be referred to the description of step 603 in fig. 6, and is not described herein again.

In a first possible scenario, the cellular network where the first communication device is currently located is a cellular network of a second radio access technology, but the second layer of the first communication device chooses to send the first data packet to the second communication device through the first wireless direct communication interface applying the first radio access technology. For example, if the cellular network where the first communication device is currently located is an NR network, the connected core network is NR 5GC, and the second layer of the first communication device selects to use LTE V2X SL for communication. Alternatively, if the cellular network in which the first communication apparatus is currently located is an LTE network and the connected core network is an EPC, the second layer of the first communication apparatus selects to communicate using NR V2X SL.

The communication method shown in fig. 3 is described with reference to the architecture of the first communication device shown in fig. 5. Fig. 9 is a schematic flowchart illustrating another communication method provided in an embodiment of the present application. The first layer of the first communication device may be the first layer 501 of fig. 5 described above, the second layer of the first communication device may be the second layer 502 of fig. 5 described above, and the third layer of the first communication device may be the third layer 503 of fig. 5 described above. As shown in fig. 9, the method includes the steps of:

in step 901, the first layer of the first communication device determines a second QoS parameter corresponding to the first packet.

For example, the first layer of the first communication device may determine the second QoS parameter corresponding to the first data packet according to a radio access technology of a cellular network in which the first communication device is currently located.

For example, if the cellular network in which the first communication device is currently located is an LTE network but the first communication device selects NR V2X SL for communication, the first layer of the first communication device may determine the second QoS parameter of the first packet as PPPP and/or PPPR by default. If the cellular network in which the first communication device is currently located is an NR network, the connected core network is 5GCC, but the first communication device selects LTE V2X SL for communication, the first layer of the first communication device may determine by default that the second QoS parameter of the first packet is QFI and/or 5QI.

In step 902, the first layer of the first communication device sends a second QoS parameter to the second layer of the first communication device.

Accordingly, the second layer of the first communication device receives the second QoS parameter from the first layer of the first communication device.

In step 903, the second layer of the first communications device obtains a mapping relationship between the first QoS parameter and the second QoS parameter.

In a possible implementation manner, the mapping relationship between the first QoS parameter and the second QoS parameter may be obtained by the second layer of the first communication device from the base station, that is, the base station configures the mapping relationship between the first QoS parameter and the second QoS parameter for the first communication device. Illustratively, if the current radio access technology of the first communication device is an NR technology, the second QoS parameter is QFI and/or 5QI, and when the base station determines that the first radio access technology corresponding to the first service to which the first data packet belongs is an LTE technology, the base station configures a mapping relationship between QFI and/or 5QI and PPPP and/or PPPR for the first communication device, that is, the second layer of the first communication device obtains the mapping relationship between QFI and/or 5QI and PPPP and/or PPPR from the base station. If the current radio access technology of the first communication device is an LTE technology, the second QoS parameter is PPPP and/or PPPR, and when the base station determines that the first radio access technology corresponding to the first service to which the first packet belongs is an NR technology, the base station configures a mapping relationship between QFI and/or 5QI and PPPP and/or PPPR for the first communication device, that is, the second layer of the first communication device obtains the mapping relationship between QFI and/or 5QI and PPPP and/or PPPR from the base station.

In another possible implementation manner, the mapping relationship between the first QoS parameter and the second QoS parameter may also be obtained by the first layer of the first communication device from a core network (for example, a CF node in the core network, or another node having a V2X control function), the first layer of the first communication device sends the mapping relationship between the first QoS parameter and the second QoS parameter to the second layer of the first communication device, and accordingly, the second layer of the first communication device receives the mapping relationship between the first QoS parameter and the second QoS parameter from the first layer of the first communication device.

In yet another possible implementation manner, the mapping relationship between the first QoS parameter and the second QoS parameter may also be configured by the first communication device itself according to a preset rule specified by the protocol.

After the step 901, execute step 902; step 901 and step 903 do not have a sequence, step 901 may be executed first, then step 902 may be executed, and then step 903 may be executed; step 903 may be executed first, and then step 901 and step 902 may be executed; or step 901, step 902 and step 903 are performed together.

In step 904, the second layer of the first communication device determines a first QoS parameter corresponding to the first packet according to the second QoS parameter and the mapping relationship.

Optionally, if the first layer of the first communication device sends the first packet and the corresponding second QoS parameter to the second layer of the first communication device: and the second layer of the first communication device maps a first QoS parameter corresponding to the first data packet according to the mapping relation between the QFI and/or the 5QI and the PPPP and/or the PPPR: PPPP and/or PPPR, illustratively, the second layer of the first communication device may be the access layer 502b of LTE V2X in fig. 5. If the first layer of the first communication device sends the first packet and the corresponding second QoS parameter to the second layer of the first communication device: the second layer of the first communication device maps a first QoS parameter corresponding to the first data packet according to the mapping relation between the QFI and/or the 5QI and the PPPP and/or the PPPR: QFI and/or 5QI, illustratively, the second tier of the first communication device may be the NR V2X access tier 502c of fig. 5. In one possible implementation manner, the second layer of the first communication device receives a second QoS parameter corresponding to the first data packet from the first layer of the first communication device; the second layer of the first communication device determines a first radio access technology for transmitting the first data packet; and the second layer of the first communication device determines the first QoS parameter according to the second QoS parameter, the mapping relation and the first wireless access technology, wherein the first wireless access technology corresponds to the first QoS parameter.

In conjunction with fig. 5 above, one situation is: the access layer 502b of the LTE V2X and the access layer 502c of the NR V2X of the first communication device may both receive the first packet and its corresponding QFI and/or 5QI from the first layer of the first communication device, and the RRC layer of the Uu determines that the first service to which the first packet belongs corresponds to the LTE V2X, the access layer 502c of the NR V2X may discard the first packet, and the access layer 502b of the LTE V2X determines the PPPP and/or PPPR corresponding to the first packet based on the QFI and/or 5QI, the mapping relationship, and the LTE V2X determined by the RRC of the Uu. The other situation is as follows: the LTE V2X access layer 502b and the NR V2X access layer 502c of the first communication device may both receive the first packet and its corresponding PPPP and/or PPPR from the first layer of the first communication device, and the RRC layer of the Uu port determines that the first service to which the first packet belongs corresponds to NR V2X, and then the LTE V2X access layer 502b may discard the first packet, and the NR V2X access layer 502c determines QFI and/or 5QI corresponding to the first packet based on the PPPP and/or PPPR, the mapping relationship, and the NR V2X determined by the RRC of the Uu port.

In a possible implementation manner, the implementation manner of determining, by the second layer of the first communication device, the first radio access technology for sending the first data packet may refer to the description of step 601 in fig. 6, and is not described herein again.

In another possible implementation, it may be that the second layer of the first communication device selects the first radio access technology itself. For the case where the first communication apparatus selects the first radio access technology by itself, the first communication apparatus may notify the base station of the selected first radio access technology, and the base station configures the first communication apparatus with a mapping relationship between the first QoS parameter and the second QoS parameter. The second layer of the first communication apparatus may reconfigure the mapping relationship between the first QoS parameter and the second QoS parameter by itself after selecting the first radio access technology.

Step 905, the second layer of the first communication device sends the first data packet to the second communication device through the first wireless direct connection port applying the first radio access technology according to the first QoS parameter.

As can be seen from the foregoing steps 901 to 905, the second layer of the first communication device obtains a mapping relationship between the first QoS parameter and the second QoS parameter, and when the first layer of the first communication device determines that the second QoS parameter corresponds to the first data packet and the second layer of the first communication device sends the first data packet by using the first wireless direct connection interface of the first radio access technology, the first QoS parameter may be determined according to the mapping relationship and the second QoS parameter, that is, it is realized that the second layer of the first communication device obtains the identifiable first QoS parameter and performs communication according to the identifiable first QoS parameter.

In order to more clearly describe the flow of the communication method in fig. 9, in this example, in conjunction with fig. 5, the first layer is a V2X layer, the second layer is an AS layer, and the third layer is an application layer. Fig. 10 is a schematic diagram illustrating a flow of another communication process provided by the present application. The process comprises the following steps:

at step 1001, the application layer may first establish a connection (AS shown by the dashed line) with the AS layer.

This step is an optional step.

In step 1002, the V2X layer determines that the radio access technology of the cellular network in which the first communication device is currently located is the second radio access technology.

Step 1003, the V2X layer determines a second QoS parameter corresponding to the first data packet according to the second radio access technology.

Step 1004, the application layer sends the first data packet to the V2X layer.

Accordingly, the V2X layer receives the first packet.

Step 1005, the V2X layer sends the second QoS parameter and the first data packet to the AS layer.

Accordingly, the AS layer receives the second QoS parameter and the first packet.

In step 1006, the as layer obtains a mapping relationship between the first QoS parameter and the second QoS parameter.

There is no sequence between step 1006 and step 1007, step 1006 may be executed first and then step 1007 is executed, or step 1007 may be executed first and then step 1006 is executed; step 1006 may also be performed together with step 1007.

Step 1007, the as layer determines the first QoS parameter corresponding to the first data packet according to the second QoS parameter and the mapping relationship between the first QoS parameter and the second QoS parameter.

Step 1008, the as layer sends a first data packet to the second communication device via the first wireless direct communication interface applying the first radio access technology according to the first QoS parameter.

The communication method shown in fig. 3 is described with reference to the architecture of the first communication device shown in fig. 5. Fig. 11 is a schematic flowchart illustrating another communication method provided in an embodiment of the present application. The first layer of the first communication device may be the first layer 501 of fig. 5 described above, the second layer of the first communication device may be the second layer 502 of fig. 5 described above, and the third layer of the first communication device may be the third layer 503 of fig. 5 described above. As shown in fig. 11, the method includes the steps of:

in step 1101, the first layer of the first communication device determines a second QoS parameter corresponding to the first packet.

This step can be referred to the description of step 901 above, and is not described here again.

In step 1102, a first layer of a first communications device obtains a mapping relationship between a first QoS parameter and a second QoS parameter.

In a possible implementation manner, the mapping relationship between the first QoS parameter and the second QoS parameter may be obtained by the second layer of the first communication device from the base station (the obtaining process from the base station may refer to the description in step 903 above), and the second layer of the first communication device sends the mapping relationship to the first layer of the first communication device.

In another possible implementation manner, the mapping relationship between the first QoS parameter and the second QoS parameter may also be obtained by the first layer of the first communication device from a core network (for example, a CF node in the core network, or another node having a V2X control function).

In step 1103, the first layer of the first communication device determines a first radio access technology for sending the first data packet.

The specific implementation manner of this step can refer to the first implementation manner in step 601 of fig. 6, and is not described herein again.

Step 1102 and step 1103 have no sequence, and step 1102 may be executed first and then step 1103 is executed; step 1103 may be performed first, and then step 1102 may be performed.

In step 1104, the first layer of the first communication device determines a first QoS parameter corresponding to the first packet according to the second QoS parameter, the mapping relationship, and the first radio access technology.

The possible implementation of this step can be referred to the introduction of step 904 in fig. 9, and is not described herein again.

In step 1105, the first layer of the first communication device sends the first QoS parameters to the second layer of the first communication device.

In step 1106, the second layer of the first communication device sends the first data packet to the second communication device through the first wireless direct access port using the first radio access technology according to the first QoS parameter.

For this step, reference may be made to the description of step 905, which is not described herein again.

In order to more clearly describe the flow of the communication method in fig. 11, in this example, in conjunction with fig. 5, the first layer is a V2X layer, the second layer is an AS layer, and the third layer is an application layer. Fig. 12 is a schematic flow chart of another communication process provided in the present application. The process comprises the following steps:

in step 1201, the application layer may first establish a connection (AS indicated by the dashed line) with the AS layer.

This step is an optional step.

In step 1202, the V2X layer determines that the radio access technology of the cellular network in which the first communication device is currently located is the second radio access technology.

Step 1203, the V2X layer determines a second QoS parameter corresponding to the first data packet according to the second radio access technology.

In step 1204, the application layer sends the first packet to the V2X layer.

Accordingly, the V2X layer receives the first packet.

Step 1205, the V2X layer obtains a mapping relationship between the first QoS parameter and the second QoS parameter.

This step can be referred to as 1102 and will not be described herein.

There is no sequence between the above steps 1204 and 1205, step 1204 may be executed first and then step 1205, or step 1205 may be executed first and then step 1204; step 1204 may also be performed in conjunction with step 1205.

In step 1206, the V2X layer determines a first radio access technology for transmitting the first data packet.

The specific implementation manner of the step may refer to the first implementation manner in step 601 in fig. 6, which is not described herein again.

Step 1207, the V2X layer determines the first QoS parameter corresponding to the first data packet according to the second QoS parameter, the mapping relationship, and the first radio access technology.

In step 1208, the V2X layer sends the first QoS parameter to the AS layer.

Step 1209, the as layer sends a first data packet to the second communication device via the first wireless direct communication interface using the first radio access technology according to the first QoS parameter.

In a second possible scenario, the cellular network where the first communication device is currently located is a cellular network of a first radio access technology, and the second layer of the first communication device sends the first data packet to the second communication device through the first wireless direct connection communication interface applying the first radio access technology. For example, if the cellular network in which the first communication device is currently located is an NR network, the second layer of the first communication device chooses to communicate with NR V2X SL. And if the cellular network where the first communication device is currently located is an LTE network, the second layer of the first communication device selects to use LTE V2X SL for communication.

For the second scenario, the first layer of the first communication device may determine a first QoS parameter corresponding to the first packet, the second layer of the first communication device receives the first QoS parameter from the first layer of the first communication device and receives the first packet from the third layer of the first communication device, and the second layer of the first communication device transmits the first packet to the second communication device through the first wireless direct access port applying the first radio access technology according to the first QoS parameter.

Illustratively, when the second layer of the first communication device determines that the cellular network where the first communication device is currently located is an LTE network, the second layer of the first communication device sends the first communication device to the first layer of the first communication device to select LTE V2X SL for communication, the first layer of the first communication device determines, according to LTE, that the first QoS parameter corresponding to the first packet is PPPP and/or PPPR, the first layer of the first communication device sends PPPP and/or PPPR to the second layer of the first communication device, and the second layer of the first communication device directly sends the first packet to the second communication device through the first wireless connection port applying the first wireless access technology according to PPPP and/or PPPR. When the second layer of the first communication device determines that the cellular network where the first communication device is located is an NR network, the second layer of the first communication device sends the first communication device to the first layer of the first communication device to select NR V2X SL for communication, and the first layer of the first communication device determines that the first QoS parameter corresponding to the first data packet is QFI and/or 5QI according to NR. The first layer of the first communication device transmits the QFI and/or 5QI to the second layer of the first communication device, and the second layer of the first communication device transmits the first packet to the second communication device through the first wireless direct connection port to which the first radio access technology is applied, according to the QFI and/or 5QI.

The communication method shown in fig. 4 will be described with reference to the architecture of the first communication device shown in fig. 5. Fig. 13 is a schematic flowchart illustrating another communication method provided in an embodiment of the present application. The first layer of the first communication device in this example may be the first layer 501 in fig. 5 described above, the second layer of the first communication device may be the second layer 502 in fig. 5 described above, and the third layer of the first communication device may be the third layer 503 in fig. 5 described above. As shown in fig. 13, the method comprises the steps of:

step 1301, a first layer of the first communication device determines QoS parameters corresponding to the first data packets respectively sent through wireless direct connection communication interfaces applying different wireless access technologies.

In a possible implementation manner, if the different wireless access technologies include LTE and NR, the first layer of the first communication device determines that the QoS parameter corresponding to the first data packet sent through the wireless direct communication interface to which the NR is applied is QFI and/or 5QI, and the first layer of the first communication device determines that the QoS parameter corresponding to the first data packet sent through the wireless direct communication interface to which the LTE is applied is PPPP and/or PPPR. That is, in this embodiment, the first layer of the first communication device does not distinguish the finally selected RAT, and determines two sets of QoS parameters, one set is PPPP and/or PPPR used by LTE V2X SL, and one set is QFI and/or 5QI used by NR V2X SL, and both are transmitted to the second layer of the first communication device.

With reference to fig. 5, for example, the first layer 501 may send the first packet and its corresponding PPPP and/or PPPR to the access layer 502b of LTE V2X, and send the first packet and its corresponding QFI and/or 5QI to the access layer 502c of NR V2X; it is also possible that the first layer 501 sends the first packet and its corresponding PPPP and/or PPPR, and QFI and/or 5QI to the access stratum 502b of LTE V2X and sends the first packet and its corresponding PPPP and/or PPPR, and QFI and/or 5QI to the access stratum 502c of NR V2X.

In step 1302, the second layer of the first communication device determines a first QoS parameter according to different QoS parameters corresponding to the first data packet.

Based on this embodiment, the present application provides the following two implementations of determining the first QoS parameter.

Implementation mode one

The second layer of the first communication device receives different QoS parameters corresponding to the first data packet from the first layer of the first communication device, and the second layer of the first communication device determines the QoS parameters meeting preset conditions in the different QoS parameters corresponding to the first data packet as the first QoS parameters. It can also be understood that the second layer of the first communication device selects one set of QoS parameters from the received two sets of QoS parameters as the first QoS parameters. For example, the second layer of the first communication device receives two sets of QoS parameters, PPPP and/or PPPR, and QFI and/or 5QI, from the first layer of the first communication device, and if the PPPP and/or PPPR satisfies the preset condition, determines the PPPP and/or PPPR as the first QoS parameter; and if the QFI and/or the 5QI meet the preset condition, determining the QFI and/or the 5QI as the first QoS parameter.

Implementation mode two

The second layer of the first communication device receives different QoS parameters corresponding to the first data packet from the first layer of the first communication device; a second layer of the first communication device determines a radio access technology corresponding to a first service, wherein the radio access technology is the first radio access technology, and a first data packet belongs to the first service; the second layer of the first communication device determines the QoS parameter corresponding to the first wireless access technology from different QoS parameters corresponding to the first data packet, and the QoS parameter is the first QoS parameter. For example, the second layer of the first communication device may determine a radio access technology corresponding to the first service of the first packet, and if the radio access technology is the first radio access technology, the second layer of the first communication device selects the first QoS parameter corresponding to the first radio access technology from the two sets of QoS parameters. For example, the first layer of the first communication device may send the first QoS parameter and the second QoS parameter to the second layer of the first communication device, and the second layer of the first communication device determines that the first data corresponds to the first radio access technology, and then sends the first data packet on the first wireless direct connection port of the first radio access technology by applying the first QoS parameter. In a possible implementation manner, the determining, by the second layer of the first communication device, the radio access technology corresponding to the first service may be described in the first implementation manner in step 201 in fig. 2, and details are not described here again. The second layer of the first communication device may also determine the radio access technology corresponding to the first service through the indication information of the radio access technology carried by the first layer, that is, when the first layer sends the first data packet to the second layer, the second layer further includes the corresponding first QoS parameter, the second QoS parameter, and the indication information of the radio access technology. The second layer of the first communication device determines the wireless access technology of the first data packet according to the indication information of the wireless access technology, and further determines to apply the first QoS parameter or the second QoS parameter, specifically, if the wireless access technology corresponding to the first data packet is the first wireless access technology, the second layer applies the first QoS parameter to perform data transmission, and if the wireless access technology corresponding to the second data packet is the second wireless access technology, the second layer applies the second QoS parameter to perform data transmission.

In conjunction with the third scenario in fig. 5, the first QoS parameter is PPPP and/or PPPR, and the second QoS parameter is QFI and/or 5QI. The first layer of the first communication device transmits PPPP and/or PPPR to the access stratum 502b of LTE V2X and QFI and/or 5QI to the access stratum 502c of NR V2X. After the LTE V2X access layer 502b and the NR V2X access layer 502c both receive the first data packet, the LTE V2X access layer 502b and the NR V2X access layer 502c respectively determine a radio access technology corresponding to the first data packet, and the radio access technology corresponding to the first data packet may be indicated by the first layer, that is, when the first layer sends the first data packet to the LTE V2X access layer 502b and the NR V2X access layer 502c, the radio access technology corresponding to the first data packet may also be indicated. If the determined wireless access technology corresponding to the first data packet is different from the wireless access technology of the access layer, not sending the first data packet; and if the wireless access type corresponding to the first data packet is the same as the wireless access type of the access layer, sending the first data packet by applying a first wireless direct connection interface. For example, if the access layer 502b of the LTE V2X determines that the wireless access type corresponding to the first data packet is LTE, the first data packet is sent through the LTE wireless direct interface, and if the access layer 502b of the LTE V2X determines that the wireless access type corresponding to the first data packet is not LTE, the first data packet is not sent. For another example, if the NR V2X access layer 502c determines that the wireless access type corresponding to the first data packet is NR, the first data packet is sent through applying an NR wireless-direct interface, and if the NR V2X access layer 502c determines that the wireless access type corresponding to the first data packet is not NR, the first data packet is not sent. Optionally, the implementation manner that the LTE V2X access layer 502b and the NR V2X access layer 502c respectively determine the radio access technology corresponding to the first data packet may refer to the description of the first implementation manner in step 201 in fig. 2, and details are not repeated here.

For example, the processing after the first layer 501 receives the first data packet from the third layer 503 may be to send the first data packet to the access layer 502b of LTE V2X and the access layer 502c of NR V2X, respectively, and to send the first data packet to the access layer 502b of LTE V2X, the first data packet needs to carry PPPP and/or PPPR; when the first data packet is sent to the access layer 502c of NR V2X, the QFI and/or the 5QI may be carried, and optionally, when the first data packet is sent to the access layer 502b of LTE V2X and the access layer 502c of NR V2X, the radio access technology corresponding to the first data packet may be further indicated. The processing after the first layer 501 receives the first data packet from the third layer 503 may also be to send the first data packet to the second layer 502, and when sending the first data packet to the second layer 502, the first data packet carries the PPPP and/or the PPPR, and the QFI and/or the 5QI at the same time. The difference between the two approaches is whether the first layer 501 can identify the access layer 502b of LTE V2X and the access layer 502c of NR V2X in the second layer 502. If so, the first layer 501 may send the first data packet and the corresponding QoS parameter carried by the first data packet to the access layer 502b of LTE V2X and the access layer 502c of NR V2X, respectively, implicitly requiring the first layer 501 to perform a copy operation on the first data packet. If not, the first layer 501 may send the first packet, along with different QoS parameters, to the second layer 502.

In a second implementation manner, the implementation manner that the second layer of the first communication device determines that the radio access technology corresponding to the first service is the first radio access technology may refer to the process of step 601 in fig. 6, and details are not repeated here.

Step 1303, the second layer of the first communication device sends the first data packet to the second communication device through the first wireless direct connection communication interface applying the first radio access technology according to the first QoS parameter.

For example, the second layer of the first communication device may send the first data packet to the second communication device through the first wireless direct communication interface applying the first radio access technology according to the first QoS parameter.

Through the above steps 1301 to 1303, the first layer of the first communication device first determines that QoS parameters corresponding to the first data packets sent through the wireless direct communication interfaces applying different wireless access technologies respectively, and then sends different QoS parameters to the second layer, and the second layer of the first communication device selects the first QoS parameter from the different QoS parameters, so that the second layer of the first communication device can flexibly select the required first QoS parameter according to actual needs. And may help to reduce the number of inter-layer interactions between the first layer of the first communication device and the second layer of the first communication device, helping to simplify the implementation of the first communication device.

In order to more clearly describe the flow of the communication method shown in fig. 13, in this example, in conjunction with fig. 5, the first layer is a V2X layer, the second layer is an AS layer, and the third layer is an application layer. Fig. 14 is a schematic flow chart of another communication process provided in the present application.

In step 1401, the application layer may first establish a connection (shown by dashed lines) with the AS layer.

This step is optional.

At step 1402, the application layer sends a first packet to the V2X layer.

Step 1403, the V2X layer determines QoS parameters respectively corresponding to the first data packets sent through the wireless direct connection communication interfaces applying different wireless access technologies.

There is no sequence between step 1402 and step 1403, step 1402 may be executed first and then step 1403 is executed, or step 1403 may be executed first and then step 1402 is executed; step 1402 and step 1403 may also be performed together.

In step 1404, the V2X layer sends different QoS parameters and a first packet to the AS layer.

Accordingly, the AS layer receives different QoS parameters and a first packet from the V2X layer.

In step 1405, the AS layer selects a first QoS parameter from the different QoS parameters.

This step can be referred to as step 1102 in fig. 11, and is not described herein again.

In step 1406, the as layer sends a first data packet to the second communication device via the first wireless direct communication interface applying the first radio access technology according to the first QoS parameter.

In summary, the present application provides various communication methods for solving the technical problems in the background art. For example, the method of the embodiment shown in fig. 2 may be adopted, and alternatively, the possible implementation manners shown in fig. 6, fig. 7 or fig. 8 may be adopted. The implementation method shown in fig. 3 may also be adopted, and alternatively, the possible implementations shown in fig. 9, fig. 10, fig. 11, and fig. 12 may be adopted. The implementation method shown in fig. 4 may also be adopted, and alternatively, the possible implementation modes shown in fig. 13 or fig. 14 may be adopted.

Based on the foregoing and the same concept, fig. 15 shows a possible exemplary block diagram of a communication apparatus involved in the embodiment of the present invention. The apparatus 1500 may include: a processing unit 1501 and a transceiving unit 1502. As a possible implementation manner, the processing unit 1501 may include a first processing unit and a second processing unit, and the transceiving unit 1502 may include a first transceiving unit and a second transceiving unit. The processing unit 1501 controls and manages the operation of the apparatus 1500. The transceiving unit 1502 is configured to support communication of the apparatus 1500 with other communication apparatuses. The apparatus 1500 may also include a storage unit 1503 for storing program codes and data of the apparatus 1500. For example, the functional units in the apparatus 1500 may be implemented by software or hardware executing software.

Illustratively, the processing unit 1501 may be a processor or a controller, such as a general purpose Central Processing Unit (CPU), a general purpose processor, a Digital Signal Processing (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. A processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, a DSP and a microprocessor, or the like. The transceiver unit 1502 may be a communication interface, a transceiver, or a transceiver circuit, etc., wherein the communication interface is referred to as a generic term, and in a specific implementation, the communication interface may include a plurality of interfaces. The storage unit 1503 may be a memory.

The apparatus 1500 may be the first communication apparatus in any of the embodiments of fig. 2 to 12, and may also be a chip for the first communication apparatus. For example, when the apparatus 1500 is a first communication device, the processing unit may be, for example, a processor, the transmitting and receiving unit may be, for example, a transceiver including radio frequency circuitry, and optionally the storage unit may be, for example, a memory. For example, when the apparatus 1500 is a chip of a first communication device, the processing unit may be, for example, a processor, and the transceiving unit may be, for example, an input/output interface, a pin, a circuit, or the like. The processing unit may execute a computer execution instruction stored in a storage unit, optionally, the storage unit is a storage unit in the chip, such as a register, a cache, and the like, and the storage unit may also be a storage unit located outside the chip in the access network device, such as a read-only memory (ROM) or another type of static storage device that may store static information and instructions, a Random Access Memory (RAM), and the like.

In the first embodiment, the processing unit 1501 is configured to determine a first radio access technology used for sending the first data packet, and determine a first quality of service QoS parameter corresponding to the first data packet according to the first radio access technology; a transceiving unit 1502, configured to send a first data packet to a second communications device through a first wireless direct communication interface applying a first radio access technology according to a first QoS parameter; the communication device has the capability of data transmission via a first wireless direct connection communication interface applying a first wireless access technology and the capability of data transmission via a second wireless direct connection communication interface applying a second wireless access technology, the first wireless direct connection communication interface and the second wireless direct connection communication interface being communication interfaces between the first communication device and other communication devices.

In one possible implementation, the transceiver unit 1502 includes a first transceiver unit and a second transceiver unit; the processing unit 1501 includes a first processing unit; a first transceiving unit configured to: receiving indication information from a second transceiving unit, wherein the indication information is used for indicating a first radio access technology corresponding to a first service, and a first data packet belongs to the first service; a first processing unit for processing the received signal,

for: and determining a first radio access technology for transmitting the first data packet according to the indication information.

In a possible implementation manner, the indication information includes a first radio access technology and/or a first service, and the first service has a mapping relationship with the first radio access technology.

In one possible implementation, the first processing unit is illustratively configured to: if the first wireless access technology is a Long Term Evolution (LTE) technology, determining that a first QoS parameter corresponding to a first data packet is a single packet priority level (PPPP) and/or a single packet reliability requirement (PPPR); and if the first radio access technology is a new air interface NR technology, determining that the first QoS parameter corresponding to the first data packet is a QoS flow identifier QFI and/or a 5G QoS indicator 5QI.

In one possible implementation, the indication information further includes a communication type; a first processing unit, illustratively, configured to: determining a communication type corresponding to a first service to which a first data packet belongs, wherein the communication type comprises broadcasting, multicasting or unicasting; a first QoS parameter is determined based on the first radio access technology and the communication type.

In one possible implementation, the first processing unit is configured to: if the first radio access technology is NR and the communication type is unicast or multicast, determining that the first QoS parameter is QFI; alternatively, if the first radio access technology is NR and the communication type is broadcast, the first QoS parameter is determined to be 5QI.

In one possible implementation, the first transceiver unit is configured to: receiving assistance information from the second transceiving unit, the assistance information comprising at least one of: the method comprises the steps that channel busy rates corresponding to wireless direct connection communication interfaces of different wireless access technologies are respectively, priorities corresponding to the wireless direct connection communication interfaces of the different wireless access technologies are respectively, and wireless direct connection communication interfaces of wireless access technologies supported by a current cell covering a first communication device are respectively obtained; illustratively, the first radio access technology is any one of radio access technologies; a first processing unit, illustratively, configured to: a first radio access technology for transmitting the first data packet is determined according to the auxiliary information.

Based on the scheme, the first communication device has two capabilities of performing data transmission through the wireless direct connection communication interface applying the wireless access technology, when the first data packet is determined to be sent through the first wireless direct connection communication interface, the first QoS parameter corresponding to the first data packet can be determined, and the first wireless direct connection communication interface can identify the first QoS parameter. Therefore, when the first wireless direct connection communication interface using the first wireless access technology sends the first data packet, the existing mechanism for determining the QoS parameters can be not changed, and the first QoS parameters which can be identified by the first wireless direct connection communication interface can be determined as required.

In the second embodiment, the processing unit 1501 is configured to determine a second quality of service QoS parameter corresponding to the first data packet; acquiring a mapping relation between a first QoS parameter and a second QoS parameter; determining a first QoS parameter corresponding to the first data packet according to the second QoS parameter and the mapping relation, wherein the first QoS parameter corresponds to a first wireless access technology; a transceiving unit 1502 configured to send a first data packet to the second communication device through the first wireless direct connection port applying the first radio access technology according to the first QoS parameter.

In one possible implementation, the transceiver unit 1502 includes a first transceiver unit and a second transceiver unit; the processing unit 1501 includes a second processing unit; a second transceiving unit configured to: receiving a second QoS parameter corresponding to the first data packet from the first transceiving unit; a second processing unit to: determining a first radio access technology for transmitting a first data packet, wherein the first radio access technology corresponds to a first QoS parameter; and determining the first QoS parameter according to the second QoS parameter, the mapping relation and the first wireless access technology.

In the third embodiment, the processing unit 1501 is configured to determine quality of service QoS parameters respectively corresponding to first data packets sent through wireless direct connection communication interfaces applying different wireless access technologies; determining a first QoS parameter according to different QoS parameters corresponding to the first data packet, wherein the first QoS parameter corresponds to a first wireless access technology; a transceiving unit 1502 is configured to send a first data packet to a second communication device through a first wireless direct communication interface applying a first radio access technology according to the first QoS parameter.

In one possible implementation, the transceiver unit 1502 includes a first transceiver unit and a second transceiver unit; the processing unit 1501 includes a first processing unit and a second processing unit; a second transceiving unit configured to: receiving different QoS parameters corresponding to the first data packet from the first transceiving unit; a second processing unit to: and determining the QoS parameter meeting the preset condition in different QoS parameters corresponding to the first data packet as the first QoS parameter.

In a possible implementation manner, the second transceiving unit is configured to: receiving different QoS parameters corresponding to the first data packet from the first transceiving unit; a second processing unit to: determining a radio access technology corresponding to a first service as a first radio access technology, wherein a first data packet belongs to the first service; and determining the QoS parameters corresponding to the first wireless access technology from different QoS parameters corresponding to the first data packet as the first QoS parameters.

In one possible implementation, the different radio access technologies include a new air interface NR technology and a long term evolution LTE technology; a first processing unit, illustratively, configured to: determining that a QoS parameter corresponding to a first data packet sent through a wireless direct connection communication interface applying NR is a QoS flow identifier QFI and/or a 5G QoS indicator 5QI; and determining that the QoS parameter corresponding to the first data packet sent through the wireless direct connection communication interface applying the LTE is the service priority PPPP and/or the service reliability requirement PPPR.

When the apparatus shown in fig. 15 is the first communication apparatus, reference may be made to the relevant description in the foregoing method embodiment for possible implementation of the foregoing communication method, which is not described herein again.

Fig. 16 shows a simplified schematic diagram of a possible design structure of a communication device according to an embodiment of the present invention. The communication device 1600 includes a processor 1601 and a communication interface 1602. Optionally, a memory 1603 is also included. The processor 1601 may implement the functionality of the processing unit of fig. 13 described above, and the communication interface 1602 may implement the functionality of the transceiving unit 1302 of fig. 13 described above. That is to say, in the present application, the processor 1601 may execute the scheme executed by the processing unit 1301 in fig. 13, and the rest of the contents of the scheme executed by the communication interface 1602 or the communication executable transceiver 1302 may refer to the above contents, which are not described herein again.

For example, the communication device provided in the embodiments of the present application may be a terminal device having a corresponding function, or may be a vehicle having a corresponding communication function, or may be a vehicle-mounted communication device or a communication chip having a corresponding communication function, or may be a chip for implementing a corresponding communication function, where the chip may be applied to the terminal device, or the vehicle-mounted communication device having a corresponding communication function.

In the above embodiments, the implementation may be wholly or partly implemented by software, hardware or a combination thereof, and when implemented using a software program, may be wholly or partly implemented in the form of a computer program product. The computer program product includes one or more instructions. The procedures or functions according to the embodiments of the present application are all or partially generated when the computer program instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The instructions may be stored in a computer storage medium or transmitted from one computer storage medium to another, e.g., the instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wired (e.g., coaxial cable, fiber optics, twisted pair) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer storage media may be any media that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that includes an integration of one or more media. The medium may be a magnetic medium (e.g., a flexible disk, a hard disk, a magnetic tape, a magneto-optical disk (MO), etc.), an optical medium (e.g., an optical disk), or a semiconductor medium (e.g., a ROM, an EPROM, an EEPROM, a Solid State Disk (SSD)), etc.

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

Claims

1. A method of communication, comprising:

the first communication device determines a second quality of service (QoS) parameter corresponding to the first data packet;

the first communication device acquires a mapping relation between a first QoS parameter and a second QoS parameter;

the first communication device determines a first QoS parameter corresponding to the first data packet according to the second QoS parameter and the mapping relation, wherein the first QoS parameter corresponds to a first wireless access technology;

and the first communication device sends the first data packet to a second communication device through a first wireless direct connection port applying the first wireless access technology according to the first QoS parameter.

2. The method of claim 1, wherein the determining, by the first communication device, the first QoS parameter corresponding to the first packet according to the second QoS parameter and the mapping relationship comprises:

the second layer of the first communication device receives a second QoS parameter corresponding to the first data packet from the first layer of the first communication device;

a second layer of the first communication device determining a first radio access technology for transmitting the first data packet, the first radio access technology corresponding to the first QoS parameter;

the second layer of the first communication device determines the first QoS parameter based on the second QoS parameter, the mapping relationship, and the first radio access technology.

3. The method of claim 2, wherein the determining, by the second layer of the first communication device, the first radio access technology for transmitting the first data packet comprises:

a second layer of the first communication device obtains indication information, wherein the indication information is used for indicating a first radio access technology corresponding to a first service, and the first data packet belongs to the first service;

and the second layer of the first communication device determines the first radio access technology for sending the first data packet according to the indication information.

4. The method of claim 3, in which the indication information comprises the first radio access technology and/or the first traffic, the first traffic having a mapping relationship with the first radio access technology.

5. A communications apparatus, comprising:

the processing unit is used for determining a second QoS parameter corresponding to the first data packet and acquiring a mapping relation between the first QoS parameter and the second QoS parameter; determining a first QoS parameter corresponding to the first data packet according to the second QoS parameter and the mapping relation, wherein the first QoS parameter corresponds to a first wireless access technology;

and the transceiving unit is used for sending the first data packet to a second communication device through a first wireless direct connection port applying the first wireless access technology according to the first QoS parameter.

6. The communication apparatus according to claim 5, wherein the transceiving unit comprises a first transceiving unit and a second transceiving unit; the processing unit comprises a second processing unit;

the second transceiving unit is configured to:

receiving a second QoS parameter corresponding to the first data packet from the first transceiver unit;

the second processing unit is configured to:

determining a first radio access technology for transmitting the first data packet, the first radio access technology corresponding to the first QoS parameter; and determining the first QoS parameter according to the second QoS parameter, the mapping relation and the first radio access technology.

7. The apparatus as claimed in claim 6, wherein said second processing unit is configured to:

acquiring indication information, wherein the indication information is used for indicating a first radio access technology corresponding to a first service, and the first data packet belongs to the first service; and determining the first radio access technology for transmitting the first data packet according to the indication information.

8. The apparatus of claim 7, in which the indication information comprises the first radio access technology and/or the first traffic, the first traffic having a mapping relationship with the first radio access technology.

9. A computer-readable storage medium, having stored thereon a computer program or instructions, which, when executed by a communication apparatus, causes the communication apparatus to perform the method of any of claims 1 to 4.