WO2022016439A1

WO2022016439A1 - Sidelink communication method and communication device

Info

Publication number: WO2022016439A1
Application number: PCT/CN2020/103685
Authority: WO
Inventors: 李岚涛; 欧阳国威
Original assignee: 华为技术有限公司
Priority date: 2020-07-23
Filing date: 2020-07-23
Publication date: 2022-01-27

Abstract

Provided in the present application are a sidelink communication method and a communication device. The method comprises: a first terminal device receives first information from a second terminal device, the first information being used for indicating a first quality of service (QoS) parameter set, the first QoS parameter set being one set with the highest priority among QoS parameter sets of a first service that the second terminal device satisfies; and the first terminal device transmits second information on the basis of the first information, the second information being used for indicating that the first service uses a second QoS parameter set, and the second QoS parameter set being one set with the highest priority among QoS parameter sets that both the first terminal device and the second terminal device satisfy. This reduces cases of communication being interrupted due to a change in the quality of service of a terminal device, thus increasing the reliability of sidelink communication.

Description

Sidelink communication method and communication device

technical field

The present application relates to the field of communication, and more particularly, to a sidelink communication method and communication device.

Background technique

The Internet of Vehicles (or vehicle-to-everything (V2X) communication network) is considered to be one of the fields with the most industrial potential and the clearest market demand in the Internet of Things system. The characteristics of strong social benefits are of great significance to promoting the innovation and development of the automobile and information and communication industries, building new models and new formats of automobile and transportation services, promoting the innovation and application of autonomous driving technology, and improving the level of traffic efficiency and safety.

At present, in V2X communication, whether it is unicast, multicast or broadcast, the quality of service (QoS) requirements of different business types can be different. For example, higher QoS requirements can support high-level autonomous driving, such as , fully machine-led autonomous driving, while lower QoS requirements can only support low-level autonomous driving, for example, autonomous driving that requires human supervision or human-led assisted driving. However, when the communication quality cannot guarantee the QoS requirements of a certain service, the terminal device will terminate the communication and stop the data transmission, which is a potential safety hazard for some V2X scenarios (eg, autonomous driving scenarios).

SUMMARY OF THE INVENTION

The present application provides a sidelink communication method and communication device, which can reduce the situation of communication interruption caused by the change of service quality of terminal equipment, and improve the reliability of sidelink communication.

In a first aspect, a wireless communication method is provided, and the method can be executed by a first terminal device or a module (such as a chip) configured in (or used for) the first terminal device, and the method is executed by the first terminal device below. Take an example to illustrate.

The method includes: a first terminal device receives first information from a second terminal device, where the first information is used to indicate a first set of quality of service QoS parameters, where the first set of QoS parameters is a first set of QoS parameters satisfied by the second terminal device A set with the highest priority in the QoS parameter set of the service; the first terminal device sends second information according to the first information, the second information is used to instruct the first service to use the second QoS parameter set, the second QoS parameter set The parameter set is a set with the highest priority in the QoS parameter sets that both the first terminal device and the second terminal device satisfy.

According to the above solution, when the quality of service of one of the terminal equipments performing sidelink communication changes, multiple terminal equipments can negotiate to change the set of QoS parameters used by the sidelink communication service, which can reduce the number of terminal equipment caused by the terminal equipment. In order to improve the reliability of sidelink communication, the communication interruption is caused by the change of the service quality of the device.

With reference to the first aspect, in some implementations of the first aspect, before the first terminal device receives the first information from the second terminal device, the method further includes: the first terminal device sends a first message, Wherein, the first message includes third information used to indicate that the quality of service of the first terminal device changes, or the first message is used to request QoS parameter set information.

According to the above solution, the first terminal device sends the first message after the service quality of the first terminal device changes, so that the second terminal device sends the first information to the first terminal device after receiving the first message, so that multiple terminal devices can negotiate and change the side. The set of QoS parameters corresponding to the services of the downlink communication can reduce the situation of communication interruption caused by the change of the service quality of the terminal equipment, so as to improve the reliability of the sidelink communication.

With reference to the first aspect, in some implementations of the first aspect, sending the first message by the first terminal device includes: when the third set of QoS parameters is different from the set of QoS parameters used by the first service, the The first terminal device sends the first message, wherein the third QoS parameter set is a set with the highest priority in the QoS parameter set of the first service satisfied by the first terminal device.

According to the above solution, when the highest priority service quality parameter that can be satisfied by the first terminal device is different from the service quality parameter corresponding to the current first service, the first message is sent. So that the first terminal device and the second terminal device negotiate a set of quality of service parameters corresponding to the first service, adjust the set of quality of service parameters of the first service, and reduce the situation of communication interruption due to changes in service quality.

With reference to the first aspect, in some implementations of the first aspect, the first message includes an identifier of the third quality of service parameter.

With reference to the first aspect, in some implementations of the first aspect, the first message includes the identifier of the first terminal device.

According to the above solution, the first message includes the identifier of the first terminal device so that the second terminal device can determine according to the identifier that the process of updating the QoS parameter set of the first service is initiated by the first terminal device.

With reference to the first aspect, in some implementations of the first aspect, the first terminal device and the second terminal device belong to a first group, the first group further includes a third terminal device, and the method further Including: the first terminal device receives information from the third terminal device for indicating a fourth QoS parameter set, where the fourth QoS parameter set is a priority in the QoS parameter set of the first service satisfied by the third terminal device A set with the highest level; wherein, the second QoS parameter set is the one with the highest priority in the QoS parameter set of the first service that can be satisfied by the first terminal device, the second terminal device and the third terminal device gather.

Optionally, the terminal device group may be a first group, and the first service may be a multicast service corresponding to the first group.

According to the above solution, the above process of updating the set of QoS parameters used by the first service can be applied to a multicast group. When the quality of service of a terminal device in the multicast group changes, the QoS parameters used by the first service can be initiated. The aggregated update process reduces the interruption of service communication due to changes in the service quality of the terminal equipment, so as to improve the reliability of sidelink communication.

With reference to the first aspect, in some implementations of the first aspect, the first terminal device sends the second information according to the first information, including: the first terminal device adds the first mapping relationship corresponding to the first service in the The QoS parameter set corresponding to the second terminal device is updated to the first QoS parameter set; if the QoS parameter set with the lowest priority in the first mapping relationship is the second QoS parameter set, the first terminal device sends the second information; wherein, the first mapping relationship is a correspondence between a terminal device and a set of quality of service parameters of the terminal device, and the set of quality of service parameters of the terminal device is the QoS of the first service satisfied by the terminal device A set with the highest priority in the parameter set, and the terminal device includes the first terminal device and the second terminal device.

According to the above solution, the first terminal device maintains the first mapping relationship to record the highest set of service quality parameters that can be satisfied by the first terminal device and the second terminal device, and can determine the quality of service used by the first service according to the first mapping relationship parameter set, and notify the second terminal device through the second information, so as to determine the QoS parameter set after the first service update, which can reduce the interruption of service communication due to the change of the service quality of the terminal device, so as to improve the side link reliability of communication.

With reference to the first aspect, in some implementations of the first aspect, the method further includes: receiving, by the first terminal device, fourth information from the second terminal device, where the fourth information is used to indicate the availability of the first service A first target QoS parameter set; if the first target QoS parameter set is the same as the second QoS parameter set, the first terminal device transmits the data of the first service according to the second QoS parameter set.

According to the above solution, the first terminal device receives the set of quality of service parameters used by the first service determined from the second terminal device, and when the set of quality of service parameters used by the second terminal device and the first service determined by the first terminal device is the same (ie In the case of the second QoS parameter set), the QoS parameter set used by the first service is updated to the second QoS parameter set. The terminal equipment negotiates and changes the QoS parameters corresponding to the service of the side link communication, reduces the situation of communication interruption caused by the change of the service quality of the terminal equipment, and improves the reliability of the side link communication.

With reference to the first aspect, in some implementations of the first aspect, the first terminal device and the second terminal device belong to a first group, the first group further includes a third terminal device, and the method further Including: the first terminal device receives fifth information from the third terminal device, where the fifth information is used to indicate the second target QoS parameter set of the first service; in the first target QoS parameter set, the second target QoS parameter set When the target QoS parameter set and the second QoS parameter set are the same, the first terminal device transmits the data of the first service according to the second QoS parameter set.

According to the above solution, the first terminal device receives the set of quality of service parameters used by the first service determined by other terminal devices in the first group, and when the quality of service parameters used by the first service determined by the other terminal devices and the first terminal device are the same (ie the second QoS parameter), update the QoS parameter set used by the first service to the second QoS parameter set. A plurality of terminal devices are implemented to negotiate and change the QoS parameters corresponding to the services of the side link communication, so as to reduce the situation of communication interruption caused by the change of the service quality of the terminal devices, so as to improve the reliability of the side link communication.

With reference to the first aspect, in some implementations of the first aspect, the first terminal device transmits the data of the first service according to the first time information and the second QoS parameter set, wherein the first time information indicates the The moment when the first service uses the updated QoS parameter set.

According to the above solution, multiple terminal devices performing sideline two-way communication can also negotiate the time to change the quality of service parameter corresponding to the first service, so that the multiple terminal devices can agree on the change time and ensure the reliability of communication.

In a second aspect, a wireless communication method is provided, and the method can be executed by a second terminal device or a module (such as a chip) configured in (or used for) the second terminal device, and the method is executed by the second terminal device below. Take an example to illustrate.

The method includes: the second terminal device sends first information, where the first information is used to indicate a first quality of service QoS parameter set, where the first QoS parameter set is in the QoS parameter set of the first service satisfied by the second terminal device A set with the highest priority; the second terminal device receives second information from the first terminal device, where the second information is used to instruct the first service to use the second set of QoS parameters.

With reference to the second aspect, in some implementations of the second aspect, before the second terminal device sends the first information, the method further includes: the second terminal device receives the first message from the first terminal device, Wherein, the first message includes third information used to indicate that the quality of service of the first terminal device changes; or the first message is used to request QoS parameter set information.

With reference to the second aspect, in some implementations of the second aspect, the first message includes an identifier of a third QoS parameter set, where the third QoS parameter set is a QoS parameter of the first service satisfied by the first terminal device The set with the highest priority in the set.

With reference to the second aspect, in some implementations of the second aspect, the first message includes the identifier of the first terminal device.

With reference to the second aspect, in some implementations of the second aspect, the method further includes: the second terminal device updating the QoS parameter set corresponding to the second terminal device in the second mapping relationship corresponding to the first service to the first set of QoS parameters; wherein, the second mapping relationship is a correspondence between a terminal device and a set of quality of service parameters of the terminal device, and the set of quality of service parameters of the terminal device is the first service satisfied by the terminal device A set with the highest priority in the set of QoS parameters of the terminal device, and the terminal device includes the first terminal device and the second terminal device.

With reference to the second aspect, in some implementations of the second aspect, the method further includes: the second terminal device sending fourth information, where the fourth information is used to indicate the first target QoS parameter set of the first service, The first target QoS parameter set is the QoS parameter set with the lowest priority in the second mapping relationship; in the case that the first target QoS parameter set is the same as the second QoS parameter set, the second terminal device according to the first target QoS parameter set Two sets of QoS parameters transmit the data of the first service.

With reference to the second aspect, in some implementations of the second aspect, the first terminal device and the second terminal device belong to a first group, the first group further includes a third terminal device, and the method further Including: the second terminal device receives fifth information from the third terminal device, where the fifth information is used to indicate the second target QoS parameter set of the first service; in the first target QoS parameter set, the second target QoS parameter set When the target QoS parameter set and the second QoS parameter set are the same, the second terminal device transmits the data of the first service according to the second QoS parameter set.

With reference to the second aspect, in some implementations of the second aspect, the method further includes: the first terminal device transmits the data of the first service according to the first time information and the second QoS parameter set, wherein the first terminal device transmits the data of the first service according to the first time information and the second set of QoS parameters. A time information indicates the time when the first service uses the updated QoS parameter set.

In a third aspect, a communication apparatus is provided, the communication apparatus is configured on a first terminal device, and the apparatus includes: a transceiver unit configured to receive first information from a second terminal device, where the first information is used to indicate a first A set of quality of service QoS parameters, where the first set of QoS parameters is a set with the highest priority in the set of QoS parameters of the first service satisfied by the second terminal device; a processing unit, configured to determine the first service according to the first information Using the second QoS parameter set, the transceiver unit is further configured to send second information, where the second information is used to indicate that the first service uses a second QoS parameter set, and the second QoS parameter set is the first terminal device and the first terminal device. A set with the highest priority in the set of QoS parameters that both terminal devices satisfy.

With reference to the third aspect, in some implementations of the third aspect, before the transceiver unit receives the first information from the second terminal device, the transceiver unit is further configured to send a first message, where the first message includes The third information used to indicate that the quality of service of the first terminal device has changed, or the first message is used to request QoS parameter set information.

With reference to the third aspect, in some implementations of the third aspect, the transceiver unit is specifically configured to send the first message when the third set of QoS parameters is different from the set of QoS parameters used by the first service, wherein, The third QoS parameter set is a set with the highest priority in the QoS parameter set of the first service satisfied by the first terminal device.

With reference to the third aspect, in some implementations of the third aspect, the first message includes an identifier of the third QoS parameter set.

With reference to the third aspect, in some implementations of the third aspect, the first message includes an identification of the first terminal device.

With reference to the third aspect, in some implementations of the third aspect, the first terminal device and the second terminal device belong to a first group, the first group further includes a third terminal device, and the transceiver unit is also used to receive information from the third terminal device for indicating a fourth QoS parameter set, where the fourth QoS parameter set is the one with the highest priority in the QoS parameter set of the first service satisfied by the third terminal device set; wherein, the second QoS parameter set is a set with the highest priority among the QoS parameter sets of the first service that can be satisfied by the first terminal device, the second terminal device and the third terminal device.

With reference to the third aspect, in some implementations of the third aspect, the processing unit is specifically configured to update the QoS parameter set corresponding to the second terminal device in the first mapping relationship corresponding to the first service to the first QoS A parameter set; the transceiver unit specifically sends the second information by the first terminal device when the QoS parameter set with the lowest priority in the first mapping relationship is the second QoS parameter set; wherein, the first mapping relationship is the correspondence between the terminal device and the QoS parameter set of the terminal device, the QoS parameter set of the terminal device is the set with the highest priority in the QoS parameter set of the first service satisfied by the terminal device, the terminal device The device includes the first terminal device and the second terminal device.

With reference to the third aspect, in some implementations of the third aspect, the transceiver monocular is further configured to receive fourth information from the second terminal device, where the fourth information is used to indicate the first target QoS of the first service parameter set;

The transceiver unit is further configured to transmit the data of the first service according to the second QoS parameter set when the first target QoS parameter set is the same as the second QoS parameter set.

With reference to the third aspect, in some implementations of the third aspect, the first terminal device and the second terminal device belong to a first group, the first group further includes a third terminal device, and the transceiver unit It is also used to receive fifth information from the third terminal device, where the fifth information is used to indicate the second target QoS parameter set of the first service; the transceiver unit is also used to set the first target QoS parameter set, the When the second target QoS parameter set and the second QoS parameter set are the same, the data of the first service is transmitted according to the second QoS parameter set.

With reference to the third aspect, in some implementations of the third aspect, the transceiver unit is further configured to transmit the data of the first service according to the first time information and the second QoS parameter set, wherein the first time information indicates The moment when the first service uses the updated QoS parameter set.

In a fourth aspect, a communication apparatus is provided, the communication apparatus is configured with a second terminal device, and the apparatus includes: a processing unit configured to determine a first quality of service QoS parameter set, where the first QoS parameter set is the second terminal A set with the highest priority in the set of QoS parameters of the first service satisfied by the device; a transceiver unit, configured to send first information, the first information being used for indication; the transceiver unit is further configured to receive the first Second information, the second information is used to indicate that the first service uses the second QoS parameter set.

With reference to the fourth aspect, in some implementations of the fourth aspect, before the transceiver unit sends the first information, the transceiver unit is further configured to receive a first message from the first terminal device, where the first message The third information is used to indicate that the quality of service of the first terminal device has changed; or the first message is used to request QoS parameter set information.

With reference to the fourth aspect, in some implementations of the fourth aspect, the first message includes an identifier of a third QoS parameter set, where the third QoS parameter set is the QoS parameter of the first service satisfied by the first terminal device The set with the highest priority in the set.

With reference to the fourth aspect, in some implementations of the fourth aspect, the first message includes an identification of the first terminal device.

With reference to the fourth aspect, in some implementations of the fourth aspect, the processing unit is further configured to update the QoS parameter set corresponding to the second terminal device in the second mapping relationship corresponding to the first service to the first QoS A parameter set; wherein, the second mapping relationship is a correspondence between a terminal device and a set of quality of service parameters of the terminal device, and the set of quality of service parameters of the terminal device is a set of QoS parameters of the first service satisfied by the terminal device A set with the highest priority among them, the terminal device includes the first terminal device and the second terminal device.

With reference to the fourth aspect, in some implementations of the fourth aspect, the transceiver unit is further configured to send fourth information, where the fourth information is used to indicate a first target QoS parameter set of the first service, the first target The set of QoS parameters is the set of QoS parameters with the lowest priority in the second mapping relationship; the transceiver unit is further configured to, in the case that the set of first target QoS parameters is the same as the set of second QoS parameters, according to the set of second QoS parameters The data of the first service is collectively transmitted.

With reference to the fourth aspect, in some implementations of the fourth aspect, the first terminal device and the second terminal device belong to a first group, the first group further includes a third terminal device, and the transceiver unit It is also used to receive fifth information from the third terminal device, where the fifth information is used to indicate the second target QoS parameter set of the first service; the transceiver unit is also used to set the first target QoS parameter set, the When the second target QoS parameter set and the second QoS parameter set are the same, the data of the first service is transmitted according to the second QoS parameter set.

With reference to the fourth aspect, in some implementations of the fourth aspect, the transceiver unit is further configured to transmit the data of the first service according to the first time information and the second QoS parameter set, wherein the first time information indicates The moment when the first service uses the updated QoS parameter set.

In a fifth aspect, a communication apparatus is provided, including a processor. The processor is coupled to the memory, and can be configured to execute instructions in the memory, so as to implement the method in the first aspect and any possible implementation manner of the first aspect. Optionally, the communication device further includes a memory. Optionally, the communication device further includes a communication interface, and the processor is coupled to the communication interface.

In an implementation manner, the communication apparatus is a first terminal device. When the communication device is the first terminal device, the communication interface may be a transceiver, or an input/output interface.

In another implementation manner, the communication apparatus is a chip configured in the first terminal device. When the communication device is a chip configured in the first terminal device, the communication interface may be an input/output interface.

Optionally, the transceiver may be a transceiver circuit. Optionally, the input/output interface may be an input/output circuit.

In a sixth aspect, a communication apparatus is provided, including a processor. The processor is coupled to the memory and can be used to execute instructions in the memory to implement the method in the second aspect and any possible implementation manner of the second aspect. Optionally, the communication device further includes a memory. Optionally, the communication device further includes a communication interface, and the processor is coupled to the communication interface.

In an implementation manner, the communication apparatus is a second terminal device. When the communication device is the second terminal device, the communication interface may be a transceiver, or an input/output interface.

In another implementation manner, the communication apparatus is a chip configured in the second terminal device. When the communication device is a chip configured in the second terminal device, the communication interface may be an input/output interface.

In a seventh aspect, a processor is provided, including: an input circuit, an output circuit, and a processing circuit. The processing circuit is configured to receive a signal through the input circuit and transmit a signal through the output circuit, so that the processor performs the method of the first aspect to the second aspect and any one of the possible implementations of the first aspect to the second aspect .

In the specific implementation process, the above-mentioned processor may be one or more chips, the input circuit may be input pins, the output circuit may be output pins, and the processing circuit may be transistors, gate circuits, flip-flops and various logic circuits, etc. . The input signal received by the input circuit may be received and input by, for example, but not limited to, a receiver, the signal output by the output circuit may be, for example, but not limited to, output to and transmitted by a transmitter, and the input circuit and output The circuit can be the same circuit that acts as an input circuit and an output circuit at different times. The embodiments of the present application do not limit the specific implementation manners of the processor and various circuits.

In an eighth aspect, a processing apparatus is provided, including a processor and a memory. The processor is configured to read instructions stored in the memory, and can receive signals through a receiver and transmit signals through a transmitter, so as to perform any one of the first to second aspects and any possible implementation manners of the first to second aspects method in .

Optionally, the processor is one or more, and the memory is one or more.

Alternatively, the memory may be integrated with the processor, or the memory may be provided separately from the processor.

In the specific implementation process, the memory can be a non-transitory memory, such as a read only memory (ROM), which can be integrated with the processor on the same chip, or can be separately set in different On the chip, the embodiment of the present application does not limit the type of the memory and the setting manner of the memory and the processor.

It should be understood that the relevant data interaction process, such as sending indication information, may be a process of outputting indication information from the processor, and receiving capability information may be a process of receiving input capability information by the processor. Specifically, the data output by the processor can be output to the transmitter, and the input data received by the processor can be from the receiver. Among them, the transmitter and the receiver may be collectively referred to as a transceiver.

The processing device in the above eighth aspect may be one or more chips. The processor in the processing device may be implemented by hardware or by software. When implemented by hardware, the processor can be a logic circuit, an integrated circuit, etc.; when implemented by software, the processor can be a general-purpose processor, implemented by reading software codes stored in a memory, which can Integrated in the processor, can be located outside the processor, independent existence.

In a ninth aspect, a computer program product is provided, the computer program product comprising: a computer program (also referred to as code, or instructions), which, when the computer program is executed, causes the computer to execute the above-mentioned first to second aspects and the method in any possible implementation manner of the first aspect to the second aspect.

In a tenth aspect, a computer-readable medium is provided, the computer-readable medium is stored with a computer program (also referred to as code, or instruction) when it runs on a computer, causing the computer to execute the above-mentioned first to second aspects Aspects and methods of any possible implementations of the first to second aspects.

In an eleventh aspect, a communication system is provided, including the aforementioned first terminal device and the second terminal device, or including the aforementioned first terminal device, the second terminal device, and the third terminal device.

Description of drawings

FIG. 1 is a schematic diagram of a communication system 100 .

FIG. 2 is an example diagram of another communication system 200 .

FIG. 3 is a schematic flowchart of a sidelink communication method provided by an embodiment of the present application

FIG. 4 is a schematic flowchart of another example of a sidelink communication method provided by an embodiment of the present application.

FIG. 5 is a schematic flowchart of another example of a sidelink communication method provided by an embodiment of the present application.

FIG. 6 is a schematic block diagram of an example of the communication device of the present application.

FIG. 7 is a schematic configuration diagram of an example of a terminal device of the present application.

detailed description

The technical solutions in the present application will be described below with reference to the accompanying drawings.

The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: global system for mobile communications (GSM), code division multiple access (CDMA) system, wideband code division Multiple access (wideband code division multiple access, WCDMA) system, general packet radio service (general packet radio service, GPRS), long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) ) system, LTE time division duplex (TDD), universal mobile telecommunications system (UMTS), worldwide interoperability for microwave access (WiMAX) communication system, fifth generation (5th generation, 5G) system or future new radio (NR), V2X, where V2X can include vehicle-to-network (V2N), vehicle-to-Vehicle (V2V), vehicle-to-infrastructure Vehicle to Infrastructure (V2I), Vehicle to Pedestrian (V2P), etc., Long Term Evolution-Vehicle (LTE-V), Machine Type Communication (MTC), Internet of Things (Internet of Things, IoT), Long Term Evolution-Machine (LTE-M), Machine to Machine (M2M), etc.

FIG. 1 is a schematic diagram of a communication system 100 .

The communication system 100 may be applicable to the method, apparatus or system provided by the embodiments of the present application. The communication system 100 may include at least two terminal devices, such as the

terminal devices

102 , 103 , 104 , and 105 shown in FIG. 1 . The communication system 100 may also include at least one network device, such as the network device 101 shown in FIG. 1 . A sidelink (sidelink, SL) may be established between the at least two terminal devices, such as

links

120 , 121 , 122 , 123 , and 124 in FIG. 1 , and the terminal devices having established sidelinks may directly to communicate. When the quality of service of one or more of the terminal devices performing sidelink communication changes, the multiple terminal devices can negotiate to change the QoS parameters corresponding to the services of the sidelink communication, which can reduce the risk of In order to improve the reliability of sidelink communication, the communication interruption is caused by the change of the service quality of the device.

FIG. 2 is an example diagram of another communication system 200 .

The PC5 interface can be a reference point between two UEs, and can be used to complete signaling and data transmission, proximity service discovery, direct communication, etc. on the control plane and the user plane. The PC5 interface may be used for short-range direct communication or direct connection communication between UEs, which may be referred to as PC5 communication, PC5 interface communication or side link communication for short. The UE communicating through the PC5 interface may be located within the coverage of the network, or may not be covered by the network, and the network may be a 4G communication network or a 5G communication network, which is not specifically limited in this embodiment of the present application.

The Uu interface may be an interface between the UE and an access network device. The access network device may be the next generation-radio access network (NG-RAN) shown in FIG. 2, for example, the next generation node base station (gNodeB) in the 5G network or gNB), the access network device may also be a base station in a Universal Mobile Telecommunications System Terrestrial Radio Access Network (UMTS terrestrial radio access network, UTRAN), or a Universal Mobile Telecommunications System (universal mobile telecommunications system, UMTS) base station, or , The evolutional node base station (evolutional node base station, eNodeB or eNB) in the 4G network, or the base station in the subsequent evolution network, is not limited. The Uu interface may be used for communication between two or more UEs through an access network device, and the communication may be referred to as Uu communication or Uu interface communication for short.

The terminal equipment in the embodiments of the present application may also be referred to as user equipment (user equipment, UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal , wireless communication device, user agent or user device. The terminal device in the embodiment of the present application may be a mobile phone (mobile phone), a tablet computer (pad), a computer with a wireless transceiver function, a virtual reality (virtual reality, VR) terminal device, an augmented reality (augmented reality, AR) terminal equipment, wireless terminals in industrial control, wireless terminals in self driving, wireless terminals in remote medical, wireless terminals in smart grid, transportation security ( wireless terminals in transportation safety), wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local Wireless local loop (WLL) stations, personal digital assistants (PDAs), handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, 5G The terminal equipment in the network or the terminal equipment in the future evolved public land mobile network (Public Land Mobile Network, PLMN), etc.

Among them, wearable devices can also be called wearable smart devices, which is a general term for the intelligent design of daily wear and the development of wearable devices using wearable technology, such as glasses, gloves, watches, clothing and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction, and cloud interaction. In a broad sense, wearable smart devices include full-featured, large-scale, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, which needs to cooperate with other devices such as smart phones. Use, such as all kinds of smart bracelets, smart jewelry, etc. for physical sign monitoring.

In addition, the terminal device may also be a terminal device in the IoT system. IoT is an important part of the development of information technology in the future. Its main technical feature is to connect items to the network through communication technology, so as to realize the intelligent network of human-machine interconnection and interconnection of things.

It should be understood that the present application does not limit the specific form of the terminal device.

The communication method of the sidelink provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

The present application provides a sidelink communication method. The communication quality of one or more terminal equipments among multiple terminal equipments performing sidelink communication changes, so that the QoS parameters currently used by a certain communication service are changed. When the set cannot be fulfilled (QoS profile cannot be fulfilled or QoS parameter set cannot be fulfilled), multiple terminal devices negotiate to change the QoS parameter set (QoS parameter set or QoS profile) used by the sidelink communication service, which can reduce the number of problems caused by it. The situation in which the communication quality of the terminal equipment changes and the communication is interrupted, so as to improve the reliability of the sidelink communication. The set of QoS parameters used by the sidelink communication service may also be referred to as the set of PC5 QoS parameters. The communication method of the sidelink provided by the present application can be applied to unicast communication or multicast communication. The following describes the implementation of the communication method when the communication method is applied to unicast communication and multicast communication.

FIG. 3 is a schematic flowchart of a sidelink communication method provided by an embodiment of the present application. The following takes the application of the sidelink communication method provided by the present application to unicast communication as an example for detailed description, but the present application is not limited thereto.

It should be noted that, in the embodiment of Fig. 3, the first terminal device and the second terminal device may be two terminal devices that perform unicast communication.

S310: The second terminal device sends information A (ie, an example of the first information) to the first terminal device.

Accordingly, the first terminal device receives the information A from the second terminal device. As an example and not limitation, the information A may be carried in a direct link modification request message (direct link modification request).

The information A may be used to indicate the QoS parameter set A (ie, an example of the first QoS parameter set), or the information A includes the QoS parameter set A. The QoS parameter set A is a set with the highest priority in the QoS parameter set of the first service satisfied by the second terminal device, or in other words, the QoS parameter set A is an optional QoS parameter set of the first service that can be selected by the first service. The set with the highest priority in the QoS parameter sets (the QoS parameter sets which can be fulfiled) satisfied by the two terminal devices.

Specifically, the QoS parameter set A is a set of L optional QoS parameter sets of the first service, L is a positive integer, and the second terminal device satisfies ( In other words, it can satisfy) where N QoS parameter sets, N≤L, where the QoS parameter set A is the set with the highest priority among the N QoS parameter sets. The second terminal device informs the first terminal device through the information A that the second terminal device satisfies the QoS requirement A with the highest priority among the N QoS requirements. So that the second terminal device negotiates with the first terminal device to select a QoS parameter set that can be used by the first service from the L optional QoS parameter sets of the first service. In other words, in the case that the QoS parameter set currently used by the first service cannot be satisfied, the first terminal device negotiates with the second terminal device to determine that one of the L optional QoS parameter sets that can be satisfied is used. In the first business, but this application is not limited to this. .

Optionally, the information A may include an identifier of the first service, indicating that the QoS parameter set A is a QoS parameter set of the first service. Wherein, the first service is a communication service between the first terminal device and the second terminal device.

As an example and not limitation, the identifier of the first service may be a V2X service identifier (V2X service identifier), for example, the V2X service identifier may be a provider service identifier (provider service identifier, PSID) or an intelligent transmission system application identifier ( intelligent transport systems-application identifier, ITS-AID).

It should be noted that each of the L optional QoS parameter sets of the first service corresponds to an optional QoS requirement of the first service. The fact that the above-mentioned terminal device can satisfy the QoS parameter set can be understood that the terminal device can satisfy the QoS requirement corresponding to the QoS parameter set. That is to say, the QoS requirement of the service specifies the value of the parameter that the terminal device needs to achieve when the QoS requirement can be met through the QoS parameter set.

Optionally, each QoS parameter set may include, but is not limited to, one or more of the following parameters:

PC5QoS indicator (PC5QoS indicator, PQI) (also known as PC5QoS indicator), guaranteed flow bit rate (guaranteed flow bit rate, GFBR), maximum flow bit rate (maximum flow bit rate, MFBR), PC5 link aggregate bit rate (PC5link aggregated bit rates) or QoS parameter valid range/distance (range).

The terminal device may determine one or more QoS characteristics included in the PQI (or determine one or more QoS characteristics mapped to the PQI) according to the stored (or configured) standard PQI to QoS characteristic (QoS characteristic) mapping table. characteristics), PQI may include but not limited to one or more of the following QoS characteristics:

Default priority (default priority level, DPL), packet delay budget (packet delay budget, PDB), packet error rate (Packet Error Rate, PER) (also known as packet loss rate), resource type (Resource Type) , default maximum data burst volume, or default averaging window.

For example, each QoS parameter set includes the values of parameters PQI, GFBR and MFBR, that is to say, the QoS parameter set corresponding to each QoS requirement of the first service specifies the parameters (PQI, GFBR and MFBR) when the corresponding QoS requirement can be met. MFBR) needs to be reached. For example, the L optional QoS parameter sets corresponding to the L optional QoS requirements of the first service may be as shown in Table 1. When the data packet delay budget PDB of a terminal device is 40ms, the terminal device cannot meet the PDB specified in the QoS parameter set identified as 0 (hereinafter referred to as QoS parameter set 0) is 10ms, then it can be called the terminal device. The QoS parameter set 0 of the first service cannot be satisfied. In other words, the terminal device cannot meet the QoS requirements of the first service corresponding to the QoS parameter set 0, but the PDB of the terminal device can meet the PDBs of the QoS parameter set 1 and QoS parameter set 2, and the terminal device can also meet the QoS parameters. In the case of other parameters in set 1 and QoS parameter set 2, it can be said that the terminal device can meet QoS parameter set 1 and QoS parameter set 2, or the terminal device can meet QoS parameter set 1 and QoS parameter set 2. The corresponding QoS requirements of the first service respectively, but the present application is not limited to this.

Table 1

QoS参数集合的标识Identification of the QoS parameter set	PQI(DPL,PDB,PER)PQI (DPL, PDB, PER)	GFBRGFBR	MFBRMFBR
00	82(3,10ms,10 ^-4) 82(3,10ms, ^10-4 )	1Gbps1Gbps	4Gbps4Gbps
11	2(4,50ms,10 ^-2) 2(4,50ms, ^10-2 )	1Gbps1Gbps	4Gbps4Gbps
22	3(3,100ms,10 ^-4) 3(3,100ms, ^10-4 )	1Gbps1Gbps	4Gbps4Gbps

Optionally, in a specific implementation, it may be stipulated that when the terminal device satisfies some parameters in the QoS parameter set, it may be said that the terminal device satisfies the QoS parameter set, or the terminal device satisfies the QoS requirement corresponding to the QoS parameter set.

Optionally, the QoS parameter sets in the L optional QoS parameter sets of the first service may be arranged in order of priority, wherein the QoS parameter sets with the highest priority are arranged in order of priority from high to low. The L optional QoS parameter sets may be referred to as multiple optional priority QoS parameter sets of the first service.

For example, the identifiers of the QoS parameter sets in the three optional QoS parameter sets of the first service in Table 1 are in descending order of the priority of the QoS parameter sets. For example, the priority of the QoS parameter marked as 0 is The highest level, but the application is not limited to this.

Optionally, the information A includes an identifier of the QoS parameter set A, and the information A indicates the QoS parameter set A through the identifier of the QoS parameter set A.

In an optional implementation manner, before S310, the first terminal device may send a first message to the second terminal device when the communication quality (or may be referred to as service quality) changes, the first message Information C (ie, an example of third information) is included, and the information C can be used to indicate that the communication quality of the first terminal device changes, or the information C is used to request the second terminal device to send the information A.

For example, the change in the communication quality of the first terminal device may be a change in the value of a QoS parameter of the first terminal device (such as a parameter in a QoS parameter set). For example, each QoS parameter set includes PQI, GFBR, and MFBR. The value of PQI, GFBR or MFBR of a terminal device changes. Alternatively, if the change of the QoS parameter of the first terminal device is greater than or equal to the preset threshold, it may be considered that the communication quality of the first terminal device has changed, or the service quality has changed. For example, the PER of the first terminal equipment changes, the PER in the PQI measured by the first terminal equipment last time is 10 ^-4 , the PER measured this time is 10 ^-2 , the PER changes by 10 ² times, and the change is greater than the preset threshold 10 ^-1 , the first terminal device sends the information C to the second terminal device, but the present application is not limited to this.

For another example, when the communication quality of the first terminal device changes, so that the first terminal device cannot satisfy the QoS parameter set currently used by the first service, the first message is sent to the second terminal device, or the first terminal device is made to When a QoS parameter set with a higher priority than the QoS parameter set corresponding to the current first service can be satisfied, the first message is sent to the second terminal device.

Optionally, the change in communication quality may be determined by the first terminal device according to conditions such as current channel quality, load size, or remaining communication resources. Alternatively, the V2X layer of the first terminal device may determine that the communication quality has changed according to QoS-related information (eg, QoS report or QoS measurement information, etc.) from a lower layer (eg, an access stratum (AS)) or an application layer.

After receiving the first message, the second terminal device learns, according to the first message, a set of QoS parameters that need to be negotiated for the first service. The second terminal device can satisfy the N QoS parameter sets among the L optional QoS parameter sets of the first service, and the QoS parameter set A has the highest priority among the N QoS parameter sets. The second terminal device sends the information A to the first terminal device, where the information A includes the QoS parameter A.

For example, the three QoS parameter sets shown in Table 1 are three optional QoS parameter sets of the first service, and the second terminal device determines that the current quality of service can satisfy the QoS parameters identified as 0 and 1 in Table 1. , that is, N=2, the priority of the QoS parameter marked as 0 is higher than the priority of the QoS parameter marked as 1, then the information A indicates the QoS parameter marked as 0, that is, the QoS parameter A is marked as 0 QoS parameters, but the application is not limited to this.

In another optional implementation manner, the second terminal device performs S310 when the communication quality changes. For example, the second terminal device determines that the communication quality changes, so that the set of QoS parameters with the highest priority of the first service that can be satisfied by the second terminal device changes. The highest priority among or multiple QoS parameter sets is QoS parameter set D, and the highest priority among the N QoS parameter sets of the first service determined this time is QoS parameter set A, which is different from QoS parameter set D . Then, the second terminal device sends the information A, indicating that the set with the highest priority among the QoS parameter sets of the first service that can be satisfied by the second terminal device is the QoS parameter set A.

Optionally, both the first terminal device and the second terminal device store a mapping relationship corresponding to the first service, where the mapping relationship is a corresponding relationship between the terminal device and the QoS parameter set of the terminal device, wherein the QoS parameter of the terminal device The set is a set with the highest priority in the set of QoS parameters of the first service satisfied by the terminal device. The mapping relationship includes a set of QoS parameters of the first terminal device and the first terminal device, and the mapping relationship also includes a set of QoS parameters corresponding to the second terminal device and the second terminal device. For example, the mapping relationship may be as shown in Table 2, that is, the QoS parameter set corresponding to the first terminal device is QoS parameter set C, and the QoS parameter set corresponding to the second terminal device is QoS parameter set D, but the present application is not limited to this. The mapping relationship corresponding to the first service may be stored in the first terminal device and the second terminal device respectively after the first terminal device and the second terminal device exchange information. The mapping relationship stored by the first terminal device is the first mapping relationship, and the mapping relationship stored by the second terminal device is the second mapping relationship.

Table 2

Exemplarily, after the second terminal device determines that the QoS parameter set with the highest priority in the QoS parameter set of the first service that can be satisfied is changed from the QoS parameter D to the QoS parameter set A, the second terminal device converts the second mapping relationship to The QoS parameter set corresponding to the second terminal device is updated to QoS parameter set A. In addition, the second terminal device notifies the first terminal device through the information A, and the first terminal device updates the QoS parameter set corresponding to the second terminal device in the first mapping relationship to the QoS parameter set A according to the information A, but the present application is not limited to this.

Optionally, the first terminal device and the second terminal device may negotiate and determine L optional QoS parameter sets of the first service before S310.

For example, the V2X application layer of the first terminal device provides K optional V2X application requirements (application requirements) of the first service to the V2X layer, where K is a positive integer, and the V2X layer of the first terminal device can choose from the K optional application requirements. The K QoS parameter sets and the corresponding identifier of each set in the K QoS parameter sets are respectively generated according to the V2X application requirements, and the K optional V2X application requirements are in one-to-one correspondence with the K QoS parameter sets. The first terminal device sends the K QoS parameter sets and the identifiers corresponding to the K QoS parameter sets to the second terminal device, and the second terminal device selects L QoS parameters in the K QoS parameter sets as the first terminal L optional QoS parameter sets of the first service determined through negotiation between the device and the second terminal device, where L≤K.

For example, the second terminal device may directly select the K QoS parameter sets notified by the first terminal device (that is, K=L), or the second terminal device may determine the number of the K QoS parameter sets among the K QoS parameter sets according to the current communication quality. Two sets of L QoS parameters that the terminal device can satisfy. The second terminal device notifies the first terminal device of the L QoS parameter sets. The L QoS parameter sets are multiple optional QoS parameter sets negotiated and determined by the first terminal device and the second terminal device for the first service, and the first terminal device and the second terminal device store the multiple optional QoS parameter sets. PC5QoS parameters. During the unicast communication between the first terminal device and the second terminal device, when the communication quality of the first terminal device or the second terminal device changes and cannot meet the QoS parameter set currently used by the first service, the One of the L optional QoS parameter sets is negotiated and selected to update the QoS parameter set used by the first service, but the present application is not limited to this. In this example, the first terminal device initiates the negotiation process of multiple optional QoS parameters of the first service (that is, the first terminal device provides K optional parameter sets to the second terminal device, and the second terminal device provides K optional parameter sets to the second terminal device. The negotiation process can be initiated by the second terminal device (that is, the second terminal device provides K optional parameter sets to the first terminal device, and the first terminal device selects from them). L), which is not limited in this application.

Optionally, the above-mentioned negotiation process of the L optional QoS parameter sets of the first service may occur when unicast is established. The K optional QoS parameter sets of the first service determined by a terminal device and the identifier corresponding to each set in the K optional QoS parameter sets, the second terminal device may include the first The second terminal device selects the identifiers of the L QoS parameter sets to notify the first terminal device that the L QoS parameter sets are used as the optional QoS parameter sets for the first service; or vice versa, that is, the second terminal device sends the first terminal device The direct connection communication request message includes the K optional QoS parameter sets determined by the second terminal device and the identifier corresponding to each set in the K QoS parameter sets, and the first terminal device can accept the message in the direct connection communication The identifiers of the L QoS parameters selected by the first terminal device are included to notify the second terminal device that the L QoS parameter sets are used as the optional QoS parameter sets of the first service, but the present application is not limited to this.

S320, the first terminal device sends information B (ie, an example of the second information) to the second terminal device according to the information A.

The information B is used to indicate that the first service uses the second QoS parameter set. Optionally, the information B may include the identifier of the first service and the identifier of the second QoS parameter set, indicating that the first service uses the second QoS parameter set.

Correspondingly, the second terminal device receives the information B from the first terminal device. When the QoS parameter set currently used by the first service is different from the second QoS parameter set, the second terminal device updates the QoS parameter set used by the first service to the second QoS parameter set.

In an optional implementation manner, the information A indicates that the highest priority set in the QoS parameter set of the first service satisfied by the second terminal device is the QoS parameter set A. After receiving the information A, the first terminal A terminal device compares the priorities of the QoS parameter set A and the QoS parameter set C (that is, an example of the third QoS parameter set), where the QoS parameter set C is the QoS parameter set of the first service satisfied by the first terminal device A set with the highest priority, the set with the lower priority in the QoS parameter set A and the QoS parameter set C (that is, the second QoS parameter set) is one or more of the first services that both the first terminal device and the second terminal device satisfy. The QoS parameter set with the highest priority among the QoS parameter sets. The first terminal device notifies the second terminal device of using the second QoS parameter set for the first service through the information B.

For example, the priority of the QoS parameter set A is lower than the priority of the QoS parameter set C, indicating that the highest priority QoS parameter set satisfied by the second terminal device is the QoS parameter set A, which cannot be higher than the QoS parameter set A. The QoS parameter set C of the priority, in order to ensure the communication quality, the first service of the unicast communication uses the QoS parameter set A that both the first terminal device and the second terminal device satisfy, that is, the QoS parameter set A is the second terminal device. A collection of QoS parameters. That is, the first terminal device satisfies the QoS parameter set C and other QoS parameter sets whose priorities are lower than the QoS parameter set C, and the second terminal device satisfies the QoS parameter set A and other QoS parameter sets whose priorities are lower than the QoS parameter set A. QoS parameter set, because the priority of the QoS parameter set A is lower than the priority of the QoS parameter set C, it means that the first terminal device and the second terminal device both satisfy the QoS parameter set A and the priority is lower than the QoS parameter set A. For other QoS parameter sets, in order to ensure communication quality, the first service uses the QoS parameter set A with the highest priority in the QoS parameter sets that both the first terminal device and the second terminal device satisfy, but the present application is not limited to this.

When the QoS parameter set corresponding to the current first service is different from the QoS parameter set A, the first terminal device updates the QoS parameter set used by the first service to the QoS parameter set A.

In another optional implementation manner, after receiving the information A, the first terminal device determines that the highest priority QoS parameter set satisfied by the second terminal device is the QoS parameter set A, and the first terminal device stores the The QoS parameter set corresponding to the second terminal device in the above-mentioned first mapping relationship is updated to QoS parameter set A, and the QoS parameter set with the lowest priority in the updated first mapping relationship is the second QoS parameter set (it needs to be explained). Yes, when the QoS parameter A is the QoS parameter set with the lowest priority in the first mapping relationship, the QoS parameter set A is the second QoS parameter set), that is, both the first terminal device and the second terminal device can A set with the highest priority in the satisfied QoS parameter sets is the second QoS parameter set. The first terminal device notifies the second terminal device of using the second QoS parameter set for the first service through the information B.

For example, after the first terminal device updates the first mapping relationship according to the information A, the QoS parameter set corresponding to the first terminal device in the first mapping relationship is the QoS parameter set C, and the QoS parameter set corresponding to the second terminal device is the QoS parameter set A. The first terminal device takes the QoS parameter set C with the lowest priority in the first mapping relationship as the second QoS parameter set, that is, one or more QoS parameter sets that both the first terminal device and the second terminal device can satisfy The highest priority QoS parameter set is the QoS parameter set C. The first terminal device uses the information B to indicate that the QoS parameter set used by the first service is updated to the QoS parameter set C.

Optionally, the first terminal device may acquire fourth information from the second terminal device, where the fourth information is used to indicate the first target QoS parameter set of the first service, and the first target parameter set is determined by the second terminal device. The QoS parameter set with the lowest priority in the second mapping relationship, when the second QoS parameter set is the same as the first target QoS parameter set, and the QoS parameter set currently used by the first service is different from the second QoS parameter set Next, the first terminal device updates the QoS parameter set used by the first service to the second QoS parameter set. Optionally, the fourth information and the information A are carried in the same message sent by the second terminal device.

Optionally, after the second terminal device receives the information B from the first terminal device, the set of QoS parameters with the lowest priority in the second mapping relationship (that is, the first target QoS parameter set) and the first set of QoS parameters indicated by the information B. If the two QoS parameter sets are the same, and the QoS parameter set currently used by the first service is different from the second QoS parameter set, the second terminal device updates the QoS parameter set used by the first service to the second QoS parameter set parameter collection.

Optionally, after the terminal devices (the first terminal device and the second terminal device) update the set of QoS parameters used by the first service, the QoS parameters used by the first service triggered by satisfying the first condition are stopped within the first time interval. The set update process (for example, the second terminal device stops sending information A within the first time interval), the first condition includes the QoS parameters of the first service that the terminal device (the first terminal device and the second terminal device) can satisfy The QoS parameter set with the highest priority in the set is higher than the QoS parameter set currently used by the first service. Optionally, the first time interval can be recorded by starting a timer D or a counter D. Optionally, the time point when the first terminal device and the second terminal device start the timer D or the counter D may be the start time when the first service uses the first symbol of the second QoS parameter set.

For example, the highest priority set in the QoS parameter set of the first service satisfied by the first terminal device is the QoS parameter set C, and the highest priority set in the QoS parameter set of the first service satisfied by the second terminal device is the QoS parameter set A. If the priority of the QoS parameter set C is lower than the QoS parameter set A, the first terminal device and the second terminal device update the QoS parameter set used by the first service to the QoS parameter set C. At the start time of the first symbol of the QoS parameter set C used by the first service, the first terminal device and the second terminal device start a timer A, the maximum duration of the timer A is the first time interval, and the first terminal device and the second terminal device start the timer A. The second terminal device does not trigger the process of updating the QoS parameter set used by the first service during the running of the timer A. For example, during the running of the timer A, the communication quality of the second terminal device becomes better. For example, the value of the PQI of the second terminal device is higher than the value of the fixed PQI in the QoS parameter set C currently used by the first service. The first terminal device negotiates to update the QoS parameter set used by the first service, but because the timer A is running, the second terminal device cannot send the information A to the first terminal device, which can avoid the QoS of the first service that can be satisfied by the terminal device. The priority of the parameter set is higher than the priority of the QoS parameter set used by the first service, which causes frequent information exchange and occupies communication resources.

As an example and not limitation, the information B may be carried in a link update accept message (link modification accept) or a link update reject message (link modification reject).

For example, when the second QoS parameter set is the QoS parameter A indicated by the information A, the first terminal device sends the link update reception message to the second terminal device, and the message includes the information B, and the information B indicates the QoS parameter A , indicating that the first service applies the QoS parameter set A, but the present application is not limited to this.

For another example, when the second QoS parameter is the QoS parameter set C with the highest priority in the QoS parameter set of the first service that can be satisfied by the first terminal device, that is, when the second QoS parameter is the same as the QoS indicated by the information A. When the parameters A are different, the first terminal device sends the link update rejection message to the second terminal device, and the message includes information B, which indicates the QoS parameter C, indicating that the first service applies the QoS parameter set A, but The present application is not limited to this.

S330: The first terminal device and the second terminal device transmit the data of the first service according to the second QoS parameter set.

After negotiating and determining that the first service uses the second QoS parameter set, the first terminal device and the second terminal device update the QoS parameter set used by the first service to the second QoS parameter set. The first terminal device and the second terminal device transmit data of the first service according to the second set of QoS parameters, that is, the first terminal device and the second terminal device transmit data of the first service that satisfies the second set of QoS parameters. The data for transmitting the first service may be data for receiving the first service or data for sending the first service. For example, the first terminal device may send data of the first service to the second terminal device according to the second QoS parameter set, and the second terminal device may receive the data of the first service, or the second terminal device may send data of the first service according to the second QoS parameter set The data of the first service is sent to the first terminal device, and the first terminal device receives the data of the first service, but the present application is not limited to this.

Optionally, the first terminal device and the second terminal device transmit the data of the first service according to the first time information and the second set of QoS parameters.

Wherein, the first time information indicates the moment when the first service uses the updated QoS parameter set, and the first time information may be fixed or dynamically adjusted. The first time information may be preset on the terminal device or dynamically configured by the network side, which is not limited.

For example, the first time information may indicate that the updated QoS parameter set is used in the next subframe or the first service of the radio frame that carries the information B. The service uses the updated second QoS parameter set, the first terminal device starts to use the updated second QoS parameter set of the first service at the start time of the next subframe of the subframe in which information B is sent, and the first terminal device starts to use the updated second QoS parameter set of the first service. The second terminal device starts to use the updated second QoS parameter set of the first service at the start time of the next subframe of the subframe in which the information B is received. When the first terminal device and the second terminal device need to transmit the data of the first service, use the second QoS parameter set to transmit the data of the first service, or in other words, ensure that the data of the first service meets the second QoS parameter gather. According to the above solution, the first terminal device and the second terminal device reach an agreement on the time point for using the updated QoS parameter set of the first service, which can improve the reliability of communication, but the present application is not limited to this.

Optionally, the first time information is sent by the first terminal device to the second terminal device, or the first time information is sent by the second terminal device to the first terminal device. As an example and not limitation, the first time information may be an absolute time or a relative time.

For example, the first time information may include the serial number of a time unit, indicating that the updated QoS parameter set of the first service is started to be used at the starting position of the time unit. If the first time information includes the time unit number X, after the first terminal device sends the information B, and the second terminal device receives the information B, it starts to use the first service at the starting position of the time unit numbered X The updated second QoS parameter set. Making the terminal devices in the unicast terminal device group agree on the time point for using the updated QoS parameter set of the first service can improve the reliability of communication, but the present application is not limited to this.

For another example, the first time information may include the number Y of time units, indicating the end time of Y time units after the time unit (such as time unit A) that carries information B (that is, the next time of the Y time units). The start time of the unit) starts to use the updated second QoS parameter set of the first service, but the present application is not limited to this.

By way of example and not limitation, the time unit may be a radio frame, a subframe or a time slot.

Optionally, the first time information and the information B may be carried in the same message sent by the first terminal device, or the first time information and the information A may be carried in the same message sent by the second terminal device.

According to the above solution, when the quality of service of one or more of the multiple terminal devices performing sidelink communication changes, the multiple terminal devices can negotiate and update the set of QoS parameters used by the service of the sidelink communication. , which can reduce the situation of communication interruption caused by the change of the service quality of the terminal device, so as to improve the reliability of the side link communication.

The above description takes the method shown in FIG. 3 applied to the unicast communication of the side link as an example. The method shown in FIG. 3 can also be applied to multicast communication. For example, the first group may include at least multiple The first group of terminal devices. The following will take FIG. 4 and FIG. 5 as examples to describe in detail that the side-link communication method provided by the embodiment of the present application is applied to the multicast communication of the side-link.

It should be noted that FIG. 4 takes the first group including the first terminal device, the second terminal device and the third terminal device as an example for illustration, but this application does not specify the number of terminal devices included in the first group in the specific implementation. Not limited.

S410, the first terminal device sends a first message.

Wherein, the first message includes information C used to indicate that the communication quality of the first terminal device changes, or the first message is used to request QoS parameter set information.

Third terminal equipment Correspondingly, the second terminal equipment receives the first message from the first terminal equipment, the third terminal equipment receives the first message from the first terminal equipment, the first terminal equipment and the second terminal equipment The terminal device and the third terminal device belong to the first group.

Optionally, the first terminal device may perform step S410 when the communication quality changes.

For example, the first terminal device cannot satisfy the QoS parameter set currently used by the first service because the current communication quality changes, and the first terminal device sends the first message. Or, the first terminal device can satisfy a QoS parameter set with a higher priority than the QoS parameter set currently used by the first service because the current communication quality changes, and the first terminal device sends the first message. After receiving the first message from the first terminal device, the second terminal device and the third terminal device know that the first terminal device has initiated the process of updating the QoS parameter set used by the first service, so that the second terminal device and the third terminal device The device may inform the first terminal device of the highest priority QoS parameter set in the optional QoS parameter sets of the first service that are respectively satisfied by the second terminal device and the third terminal device in S420.

Optionally, the first message includes the identifier of the first terminal device, indicating that the QoS parameter set update process is initiated by the first terminal device.

Optionally, the first terminal device can determine whether the communication quality has changed according to whether its own channel quality, load size, or communication resource conditions have changed, or the V2X layer of the first terminal device can ) or application layer QoS information (eg, QoS report or QoS measurement information, etc.) to determine that the communication quality has changed.

Optionally, the first message includes an identifier of the first service, indicating that the QoS parameter set update process initiated by the first terminal device is for the first service.

Optionally, the first message is a multicast message of the first group, which may be an existing message or a newly added message. For example, the first message is the highest priority QoS parameter set request message. The application is not limited to this.

S420, the second terminal device sends information A1 (ie, another example of the first information) to the first terminal device according to the first message, and the third terminal device sends information A2 to the first terminal device according to the first message (ie, is used for indicating An example of information for the fourth set of QoS parameters).

Correspondingly, the first terminal device receives information A1 from the second terminal device and information A2 from the third terminal device 2 . In addition, the present application does not limit the order in which the second terminal device sends the information A1 and the third terminal device sends the information A2.

After receiving the first message from the first terminal device in S410, the second terminal device and the third terminal device learn that the communication quality of the first terminal device has changed, and the first terminal device initiates an update of the QoS parameters used by the first service. Process. Then, the second terminal device and the third terminal device respectively notify the first terminal device of the QoS parameter set with the highest priority in the satisfied QoS parameter set of the first service through the information A1 and the information A2. The information A1 is used to indicate the QoS parameter set A, and the QoS parameter set with the highest priority in the QoS parameter set of the first service satisfied by the second terminal device is the QoS parameter set A; the information A2 is used to indicate the QoS parameter set E (ie, an example of the fourth QoS parameter set), indicating that the QoS parameter set with the highest priority in the QoS parameter set of the first service satisfied by the third terminal device is the QoS parameter set E.

Optionally, the information A1 and the information A2 include the identifier of the first service.

Optionally, the terminal devices (including the first terminal device, the second terminal device, and the third terminal device) in the first group may store L optional QoS parameter sets of the first service, respectively. The QoS parameters The set A and the QoS parameter set E belong to the L optional QoS parameter sets.

For example, when the first group is established, the V2X application layer of each terminal device in the first group provides L optional V2X application requirements to the V2X layer, and the V2X layer separately generates the L optional application requirements according to the L optional application requirements. The L QoS parameter sets corresponding to the L optional application requirements one-to-one and the identifier corresponding to each QoS parameter set in the L QoS parameter sets, the L QoS parameter sets may be shown in Table 1, but this application Not limited to this.

Optionally, the information A1 includes the identifier of the QoS parameter set A, and the information A2 includes the identifier of the QoS parameter E.

Optionally, after the first terminal device sends the first message, a counter B is started, where the counter B is used to record the acquired number of QoS parameter set information sent by the terminal devices in the first group.

In an embodiment, the first terminal device executes S430 after acquiring the QoS parameter set information sent by each terminal device in the multicast terminal device group.

For example, the first terminal device starts the counter B after sending the first message, the counter B is used to record the number of received QoS parameter set information, and the maximum value of the counter B is K-1, where K is the first group The number of terminal devices contained in . For example, in this embodiment, K=3, and the maximum value of counter B is 2. For example, the initial value of counter B is 0. After receiving the information A1, the counter B increases by 1. After receiving the information A2, the counter B increases by 1, and the counter B increases by 1. When the maximum value is reached, the counting is stopped, and the first terminal device executes S430, wherein the initial value of the counter B can also be K-1, and the counter is decremented by 1 after each QoS parameter set information is received, and the counting value of the counter B stops counting when the count value is 0. , the first terminal device executes S430, but the present application is not limited to this.

Optionally, if the counter B does not stop counting within a period of time, the first terminal device may broadcast the first message again, or the first terminal device may not feed back the QoS parameter set information to the terminals in the first group. The device (including the terminal device that has sent the QoS parameter set information but the first terminal device has not received the QoS parameter set information and the terminal device that has not sent the QoS parameter set information) sends the unicast first message until the count of the counter B reaches the maximum When the count is stopped due to the value or the minimum value, the first terminal device executes S430, but the present application is not limited to this.

In another embodiment, the first terminal device executes S430 after acquiring the QoS parameter set information fed back by L terminal devices in the multicast terminal device group (including K terminal devices). Among them, K is an integer greater than 0, and L is a positive integer less than K.

For example, in this embodiment, the first group may include 3 terminal devices, and when the first terminal device receives the feedback of the QoS parameter set information from 2 of the terminal devices, the first terminal device executes S430 (ie, L=2) . That is, the first terminal device receives the information A1 and the information A2 respectively sent by the second terminal device and the third terminal device, and does not receive the QoS parameter set information fed back by another terminal device in the first group within a period of time, Then the first terminal device executes S330, but the present application is not limited to this.

S430, the first terminal device sends the information B according to the information A1 and the information A2.

Wherein, the information B is used to instruct the first service to use the second QoS parameter set. Optionally, the first terminal device may send the information B in a broadcast or multicast manner. Exemplarily, the first terminal device compares the priority of the QoS parameter set A, the QoS parameter set E, and the QoS parameter set C with the highest priority in the QoS parameter set of the first service satisfied by the first terminal device itself, and sets the QoS parameter The second QoS parameter set with the lowest priority among the set A, the QoS parameter set E, and the QoS parameter set C is used as the QoS parameter set used by the first service. That is to say, the set of QoS parameters that can be satisfied by the first terminal device, the second terminal device, and the third terminal device are the second QoS parameter set and other QoS parameter sets whose priorities are lower than those of the second QoS parameter set. The second QoS parameter set with the highest priority in the QoS parameter set that can be satisfied by the terminal device, the second terminal device 1 and the third terminal device is used as the QoS parameter set used by the first service, so that the first group application can currently Set the QoS parameters of the first service with the highest priority to ensure communication quality.

Correspondingly, terminal devices other than the first terminal device in the first group receive the information B. For example, after the second terminal device and the third terminal device respectively receive the information B, the QoS parameters currently used by the first service are When the set is different from the second QoS parameter set, the QoS parameter set used by the first service is updated to the second QoS parameter set.

Optionally, after updating the QoS parameter set used by the first service, the terminal equipment in the first group stops the update process of the QoS parameter set used by the first service triggered by the first condition within the first time interval (for example, , the second terminal device stops sending information A within the first time interval and/or the first terminal device stops sending information C) within the first time interval. For specific implementation, reference may be made to the foregoing description in the embodiment of FIG. 3 , which is not repeated here for brevity.

S440: The first terminal device, the second terminal device, and the third terminal device transmit the data of the first service according to the second set of QoS parameters.

After the terminal devices in the first group negotiate and determine that the first service uses the second QoS parameter set, the QoS parameter set used by the first service is updated to the second QoS parameter set. The terminal devices in the first group transmit data of the first service according to the second QoS parameter set, that is to say, the terminal devices in the first group transmit data of the first service that satisfies the second QoS parameter set. The data for transmitting the first service may be data for receiving the first service or data for sending the first service.

Optionally, the terminal devices in the first group transmit data of the first service according to the first time information and the second set of QoS parameters.

Optionally, the first time information indicates the moment when the first service starts to use the updated QoS parameter set, and the first time information may be fixed or dynamically adjusted. The time may be preset in the terminal device or dynamically configured by the network side, which is not limited in this application.

For example, the first time information indicates that the first service uses the updated QoS parameter set at the start time of the next subframe or radio frame carrying the information B, for example, the terminal devices in the first group determine according to the first time information The first service uses the second QoS parameter set at the start time of the next subframe of the subframe carrying the information B, and the first terminal device starts to use the second QoS parameter set at the start time of the next subframe of the subframe that sends the information B The second QoS parameter set after the first service is updated, the second terminal device and the third terminal device start to use the first service at the start time of the next subframe of the subframe in which the information B is received. The second QoS parameter set of the first group allows the terminal devices in the first group to reach an agreement on the time point of using the updated QoS parameter set of the first service, which can improve the reliability of communication, but the present application is not limited to this.

Optionally, the first terminal device may send the first time information to notify other terminal devices in the first group of the first time information. As an example and not limitation, the first time information may be an absolute time or a relative time.

For example, the first time information may include the serial number of a time unit, indicating that the first service starts to use the updated QoS parameter set at the start time of the time unit. If the time information includes the time unit number X, after the first terminal device sends the information B, and other terminal devices in the first group receive the information B, start to use the time unit number X at the beginning of the time unit. A second set of QoS parameters after service update. Making the terminal devices in the first group agree on the time point for using the updated QoS parameter set of the first service can improve the reliability of communication, but the present application is not limited to this.

For another example, the first time information may include the number Y of time units, indicating the end time of Y time units (that is, Y time units) after the terminal devices in the first group send or receive the information B. The start time of the next time unit of the unit) starts to use the second QoS parameter set updated by the first service, but the present application is not limited to this.

After the terminal devices in the first group update the QoS parameter set used by the first service to the second QoS parameter set according to the first time information, the terminal devices in the first group transmit the first QoS parameter set according to the second QoS parameter set. Data of a service, that is to say, the terminal devices of the first group transmit data of the first service that satisfies the second set of QoS parameters.

According to the above solution, when the quality of service of one or more of the multiple terminal devices performing sidelink communication changes, the multiple terminal devices can negotiate to change the set of QoS parameters corresponding to the service of the sidelink communication. , which can reduce the situation of communication interruption caused by the change of the service quality of the terminal equipment, so as to improve the reliability of the side link communication.

It should be noted that, for the same or similar parts of the embodiment of FIG. 4 and the embodiment of FIG. 3 , unless otherwise specified, reference may be made to the description of the embodiment of FIG. 3 , which will not be repeated here for brevity.

It should be noted that FIG. 5 takes the first group including the first terminal device, the second terminal device, and the third terminal device as an example for description, but the present application describes the specific implementation of the terminal devices included in the first group. The number is not limited. In the embodiments of FIG. 4 and FIG. 5 , the first group includes group members participating in the multicast service (the multicast service includes but not limited to the first service), and the group members in the first group in this application are terminal devices (eg, the first terminal device, the second terminal device, the third terminal device). The first group may also be referred to as a terminal device group or a multicast group.

S510, the second terminal device sends information A.

The information A is used to indicate the QoS parameter set A. For information A, reference may be made to the relevant description in the embodiment shown in FIG. 3 , and details are not repeated here.

The third terminal device Correspondingly, the first terminal device 1 receives the information A, the third terminal device receives the information A, and the first terminal device, the third terminal device and the second terminal device belong to the same first group Group.

The QoS parameter set A is a set with the highest priority in the optional QoS parameter sets of the first service satisfied by the second terminal device. When the communication quality of the second terminal device changes, so that the QoS parameter set with the highest priority in the QoS parameter set of the first service that can be satisfied by the second terminal device changes, the second terminal device sends the information A to notify The terminal devices in the first group, so that after receiving the information A, the first terminal device and the third terminal device know that the highest priority QoS parameter set in the QoS parameter set of the first service satisfied by the second terminal device occurs. change, the second terminal device initiates a process of changing the QoS parameter set used by the first service, thereby executing S520.

Optionally, the information A includes the identifier of the QoS parameter set A.

Exemplarily, each terminal device in the first group stores a mapping relationship corresponding to the first service, and the first mapping relationship is the corresponding relationship between the terminal device in the first group and the QoS parameter set of the terminal device , where the QoS parameter set of the terminal device is a set with the highest priority in the QoS parameter set of the first service satisfied by the terminal device. The mapping relationship corresponding to the first service may be stored in each terminal device respectively by the terminal devices in the first group after information exchange. The mapping relationship stored by the first terminal device is the first mapping relationship, the mapping relationship stored by the second terminal device is the second mapping relationship, and the mapping relationship stored by the third terminal device is the third mapping relationship. After the second terminal device determines that the highest priority QoS parameter set in the satisfied QoS parameter set of the first service becomes the QoS parameter set A, the second terminal device updates the second terminal device in the second mapping relationship stored by the second terminal device. The QoS parameter set corresponding to the device is the QoS parameter set A. After receiving the information A, the first terminal device updates the QoS parameter set corresponding to the second terminal device in the first mapping relationship stored by the first terminal device to the QoS parameter set A, and after the third terminal device receives the information A, The QoS parameter set corresponding to the second terminal device in the third mapping relationship stored by the third terminal device is updated to the QoS parameter set A.

Optionally, the second terminal device further sends fourth information, where the fourth information is used to indicate the first target QoS parameter set. The first target QoS parameter set is a set of QoS parameter sets with the lowest priority in the updated second mapping relationship (when the QoS parameter set A is the QoS parameter set with the lowest priority in the second mapping relationship, the A target QoS parameter set is the QoS parameter set A), that is, the first target QoS parameter set is the QoS parameter with the highest priority in the QoS parameter set of the first service that can be satisfied by the terminal devices in the first group gather. Optionally, the fourth information includes the identifier of the first target QoS parameter, indicating that the set of QoS parameters with the lowest priority in the second mapping relationship stored by the second terminal device is the first target QoS corresponding to the identifier. parameter collection.

Optionally, the fourth information and the information A are carried in the same message sent by the second terminal device.

Optionally, the terminal equipment in the first group may store L optional QoS parameter sets of the first service, and the QoS parameter set A is one of the L optional QoS parameter sets of the first service. One.

S520, the first terminal device sends information B1 (ie, another example of the second information) according to the information A, and the third terminal device sends information B2 (ie, an example of the fifth information) according to the information A.

Correspondingly, the third terminal device and the second terminal device respectively receive the information B1, and the first terminal device and the second terminal device receive the information B2 respectively. It should be noted that this application sends the information to the first terminal device and the third terminal device. The sequence of the information B1 and the information B2 is not limited.

Wherein, the information B1 is used to indicate the second QoS parameter set, indicating that the QoS parameter set with the lowest priority in the first mapping relationship updated by the first terminal device is the second QoS parameter set, and the information B2 is used to indicate the second target QoS The parameter set, indicating that the QoS parameter set with the lowest priority in the third mapping relationship updated by the third terminal device is the second target QoS parameter set.

Specifically, after receiving the information A, the first terminal device learns that the set with the highest priority in the QoS parameter set of the first service that the second terminal device can satisfy is the QoS parameter set A, then the first terminal device will After the QoS parameter set corresponding to the second terminal device in the mapping relationship is updated to QoS parameter set A, determine that the QoS parameter set with the lowest priority in the updated first mapping relationship is the second QoS parameter set, and indicate the second QoS parameter set through information B1. QoS parameter set, (it should be noted that when QoS parameter set A is the QoS parameter set with the lowest priority in the first mapping relationship, QoS parameter A is the second QoS parameter set 1). After receiving the information A, the third terminal device updates the QoS parameter set corresponding to the second terminal device in the stored third mapping relationship to the QoS parameter set A, and determines the third mapping relationship after the update with the lowest priority The QoS parameter set is the second target QoS parameter set, and the second target QoS parameter set is indicated by the information B2.

Wherein, when the second QoS parameter set, the second target QoS parameter set 2, and the first target QoS parameter set are the same, the terminal devices (the first terminal device, the third terminal device, and the second terminal device) determine the The second QoS parameter set used by the first service of the first group, in the case that the QoS parameter set currently used by the first service is different from the second QoS parameter set, update the QoS parameter set used by the first service is the second QoS parameter set.

Optionally, the second terminal device, the first terminal device 1 and the third terminal device may respectively start a counter C, where the timer C is used to record the number of acquired information B.

In one embodiment, a terminal device obtains the QoS parameter set with the lowest priority in the mapping relationship indicated by each terminal device in the first group, and then obtains the set of QoS parameters in the mapping relationship indicated by each terminal device in the first group. In the case that the QoS parameter sets with the lowest priority are the same (that is, both are the second QoS parameter set), the second QoS parameter set used by the first service is updated.

In another implementation manner, after a terminal device obtains the set of QoS parameters with the lowest priority in the mapping relationships indicated by L terminal devices in the first group (including K terminal devices), the L terminal devices indicate The second QoS parameter set is used to update the first service under the condition that the QoS parameter sets with the lowest priority in the mapping relationship are the same (that is, both are the second QoS parameter set). Among them, K is an integer greater than 0, and L is a positive integer less than K.

S530: The first terminal device, the second terminal device, and the third terminal device transmit the data of the first service according to the second QoS parameter set.

Optionally, the terminal devices in the first group transmit data of the first service according to the first time information and the second set of QoS parameters. For specific implementation, reference may be made to the description in FIG. 4 , which is not repeated here for brevity.

Optionally, after updating the QoS parameter set used by the first service, the terminal equipment in the first group stops the update process of the QoS parameter set used by the first service triggered by the first condition within the first time interval (for example, The second terminal device stops sending information A) within the first time interval. For specific implementation, reference may be made to the foregoing description in the embodiment of FIG. 3 , which is not repeated here for brevity.

According to the above solution, when the communication quality of one or more terminal devices in multiple terminal devices performing sidelink communication changes, the multiple terminal devices can negotiate to change the set of QoS parameters used by the service of the sidelink communication. , it is possible to reduce the situation of communication interruption caused by the change of the communication quality of the terminal equipment, so as to improve the reliability of the side link communication.

It should be noted that, for the same or similar parts of the embodiment of FIG. 5 and the embodiments of FIG. 3 and FIG. 4 , the descriptions in the embodiments of FIG. 3 and FIG. 4 may be referred to unless otherwise specified.

Those skilled in the art can clearly understand that the various numbers or letter numbers such as "first", "second", "1", "2", "A", "B" in this application are only for the convenience of description Differentiation is not intended to limit the embodiments of the present application.

In the above, the methods provided by the embodiments of the present application are described in detail with reference to FIG. 3 to FIG. 5 . Hereinafter, the device provided by the embodiment of the present application will be described in detail with reference to FIG. 6 and FIG. 7 .

FIG. 6 is a schematic block diagram of a communication apparatus provided by an embodiment of the present application. As shown in FIG. 6 , the communication apparatus 600 may include a processing unit 610 and a transceiver unit 620 .

In a possible design, the communication apparatus 600 may correspond to the first terminal device in the above method embodiments, or a chip configured in (or used in) the first terminal device.

It should be understood that the communication apparatus 600 may correspond to the first terminal device in the methods 300, 400, and 500 according to the embodiments of the present application, and the communication apparatus 600 may include a method for executing the method 300 in FIG. 3, FIG. 4, and FIG. 5. , 400, and 500 are the units of the method executed by the first terminal device. The units in the communication apparatus 600 and the other operations and/or functions mentioned above are respectively to implement the corresponding processes of the methods 300 , 400 and 500 in FIG. 3 , FIG. 4 , and FIG. 5 .

In another possible design, the communication apparatus 600 may correspond to the second terminal device in the above method embodiments, or be configured in (or used in) a chip in the second terminal device.

It should be understood that the communication apparatus 600 may correspond to the second terminal device in the methods 300 , 400 and 500 according to the embodiments of the present application, and the communication apparatus 600 may include a method for executing the method 300 in FIG. 3 , FIG. 4 , and FIG. 5 . , 400, and 500, the unit of the method performed by the second terminal device. The units in the communication apparatus 600 and the other operations and/or functions mentioned above are respectively to implement the corresponding processes of the methods 300 , 400 and 500 in FIG. 3 , FIG. 4 , and FIG. 5 .

It should also be understood that when the communication apparatus 600 is a chip configured (or used in) a terminal device, the transceiver unit 620 in the communication apparatus 600 may be an input/output interface or circuit of the chip, and the processing in the communication apparatus 600 Unit 610 may be a processor in a chip. Optionally, the communication apparatus 600 may further include a processing unit 610, and the processing unit 610 may be configured to process instructions or data to implement corresponding operations.

Optionally, the communication apparatus 600 may further include a storage unit, which may be used to store instructions or data, and the processing unit 610 may execute the instructions or data stored in the storage unit, so that the communication apparatus realizes corresponding operations, the The transceiver unit 620 in the communication device 600 in the communication device 600 may correspond to the transceiver 710 in the terminal device 700 shown in FIG. 7 , and the storage unit may correspond to the memory in the terminal device 700 shown in FIG. 7 . 730.

It should be understood that the specific process of each unit performing the above-mentioned corresponding steps has been described in detail in the above-mentioned method embodiments, and for the sake of brevity, it will not be repeated here.

It should also be understood that when the communication apparatus 600 is a terminal device, the transceiver unit 620 in the communication apparatus 600 may be implemented through a communication interface (such as a transceiver or an input/output interface), for example, it may correspond to the terminal shown in FIG. 7 . The transceiver 710 in the device 700, the processing unit 610 in the communication device 600 may be implemented by at least one processor, for example, may correspond to the processor 720 in the terminal device 700 shown in FIG. The processing unit 610 may be implemented by at least one logic circuit.

FIG. 7 is a schematic structural diagram of a terminal device 700 provided by an embodiment of the present application. The terminal device 700 can be applied to the system shown in FIG. 1 to perform the functions of the terminal device in the foregoing method embodiments. As shown, the terminal device 700 includes a processor 720 and a transceiver 710 . Optionally, the terminal device 700 further includes a memory 730 . Exemplarily, the processor 720, the transceiver 710 and the memory 730 can communicate with each other through an internal connection path to transmit control and/or data signals, the memory is used to store computer programs, and the processor 720 is used to execute the memory 730. in the computer program to control the transceiver 710 to send and receive signals. Optionally, the terminal device 700 may include a bus system 740, and information may be transmitted between the transceiver 710, the processor 720 and the memory 730 through the bus system.

The above-mentioned processor 720 and the memory 730 can be combined into a processing device, and the processor 720 is configured to execute the program codes stored in the memory 730 to realize the above-mentioned functions. During specific implementation, the memory 730 may also be integrated in the processor 720 or independent of the processor 720 . The processor 720 may correspond to the processing unit in FIG. 6 .

The above transceiver 710 may correspond to the transceiver unit in FIG. 6 . The transceiver 710 may include a receiver (or receiver, receiving circuit) and a transmitter (or transmitter, transmitting circuit). Illustratively, the receiver is used for receiving signals, and the transmitter is used for transmitting signals.

It should be understood that the terminal device 700 shown in FIG. 7 can implement various processes involving the terminal device in the method embodiments shown in FIG. 3 , FIG. 4 , and FIG. 5 . The operations and/or functions of each module in the terminal device 700 are respectively to implement the corresponding processes in the foregoing method embodiments. For details, reference may be made to the descriptions in the foregoing method embodiments, and to avoid repetition, the detailed descriptions are appropriately omitted here.

The above-mentioned processor 720 may be used to perform the actions implemented by the terminal device described in the foregoing method embodiments, and the transceiver 710 may be used to perform the operations described in the foregoing method embodiments that the terminal device sends to or receives from the network device. action. For details, please refer to the descriptions in the foregoing method embodiments, which will not be repeated here.

Optionally, the above-mentioned terminal device 700 may further include a power supply for providing power to various devices or circuits in the terminal device. In addition, in order to make the functions of the terminal device more complete, the terminal device 700 may further include one or more of an input unit, a display unit, an audio circuit, a camera, a sensor, etc., and the audio circuit may also include a speaker, microphone, etc.

An embodiment of the present application further provides a processing apparatus, including a processor and an interface, where the processor is configured to execute the method in any of the foregoing method embodiments.

It should be understood that the above-mentioned processing device may be one or more chips. For example, the processing device may be a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), a system on chip (SoC), or a It is a central processing unit (CPU), a network processor (NP), a digital signal processing circuit (DSP), or a microcontroller (microcontroller unit). , MCU), it can also be a programmable logic device (PLD) or other integrated chips.

In the implementation process, each step of the above-mentioned method can be completed by a hardware integrated logic circuit in a processor or an instruction in the form of software. The steps of the methods disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware processor, or executed by a combination of hardware and software modules in the processor. The software module can be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware. To avoid repetition, detailed description is omitted here.

It should be noted that the processor in this embodiment of the present application may be an integrated circuit chip, which has a signal processing capability. In the implementation process, each step of the above method embodiments may be completed by a hardware integrated logic circuit in a processor or an instruction in the form of software. The aforementioned processors may be general purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components . The methods, steps, and logic block diagrams disclosed in the embodiments of this application can be implemented or executed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the methods disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software module may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in this embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Exemplarily, the non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (erasable PROM, EPROM), Electrically Erasable Programmable Read Only Memory (electrically EPROM, EEPROM) or flash memory. Volatile memory may be random access memory (RAM), which acts as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synchlink DRAM, SLDRAM) ) and direct memory bus random access memory (direct rambus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but not be limited to, these and any other suitable types of memory.

According to the method provided by the embodiment of the present application, the present application also provides a computer program product, the computer program product includes: computer program code, when the computer program code is executed by one or more processors, the computer program code including the processor is executed. The apparatus executes the methods in the embodiments shown in FIG. 3 , FIG. 4 , and FIG. 5 .

According to the methods provided by the embodiments of the present application, the present application further provides a computer-readable storage medium, where the computer-readable storage medium stores program codes, and when the program codes are executed by one or more processors, the processing includes the processing The device of the controller executes the methods in the embodiments shown in FIG. 3 , FIG. 4 , and FIG. 5 .

According to the method provided by the embodiment of the present application, the present application further provides a system, which includes the aforementioned first terminal device and the second terminal device, or includes the aforementioned first terminal device, the second terminal device, and the third terminal device.

The network equipment in each of the above apparatus embodiments completely corresponds to the terminal equipment and the network equipment or terminal equipment in the method embodiments, and corresponding steps are performed by corresponding modules or units. For the sending step, other steps except sending and receiving may be performed by a processing unit (processor). For functions of specific units, reference may be made to corresponding method embodiments. Exemplarily, there may be one or more processors.

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented in software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer may be a general purpose computer, special purpose computer, computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server, or data center Transmission to another website site, computer, server, or data center by wire (eg, coaxial cable, optical fiber, digital subscriber line, DSL) or wireless (eg, infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that includes an integration of one or more available media. The available media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, high-density digital video discs (DVDs)), or semiconductor media (eg, solid state discs, SSD)) etc.

The network equipment in each of the above apparatus embodiments completely corresponds to the terminal equipment and the network equipment or terminal equipment in the method embodiments, and corresponding steps are performed by corresponding modules or units. For the sending step, other steps except sending and receiving may be performed by a processing unit (processor). For functions of specific units, reference may be made to corresponding method embodiments. The number of processors may be one or more.

The terms "component", "module", "system" and the like are used in this specification to refer to a computer-related entity, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a component may be, but is not limited to, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of illustration, both an application running on a computing device and the computing device may be components. One or more components may reside within a process and/or thread of execution, and a component may be localized on one computer and/or distributed between 2 or more computers. In addition, these components can execute from various computer readable media having various data structures stored thereon. A component may, for example, be based on a signal having one or more data packets (eg, data from two components interacting with another component between a local system, a distributed system, and/or a network, such as the Internet interacting with other systems via signals) Communicate through local and/or remote processes.

Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and components shown as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

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

In the above embodiments, the functions of each functional unit may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions (programs). When the computer program instructions (programs) are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer may be a general purpose computer, special purpose computer, computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server, or data center Transmission to another website site, computer, server, or data center is by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that includes an integration of one or more available media. The usable media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVDs), or semiconductor media (eg, solid state disks (SSDs)), and the like.

The functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes .

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this. should be covered within the scope of protection of this application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

A communication method, comprising:

The first terminal device receives first information from the second terminal device, where the first information is used to indicate a first quality of service QoS parameter set, where the first QoS parameter set is the first service satisfied by the second terminal device The set with the highest priority in the set of QoS parameters;

The first terminal device sends second information according to the first information, where the second information is used to instruct the first service to use a second QoS parameter set, and the second QoS parameter set is the first terminal A set with the highest priority in a set of QoS parameters that both the device and the second terminal device satisfy.
The method according to claim 1, wherein before the first terminal device receives the first information from the second terminal device, the method further comprises:

The first terminal device sends a first message,

Wherein, the first message includes third information used to indicate that the quality of service of the first terminal device has changed, or the first message is used to request QoS parameter set information.
The method according to claim 2, wherein sending the first message by the first terminal device comprises:

In the case that the third QoS parameter set is different from the QoS parameter set used by the first service, the first terminal device sends the first message, where the third QoS parameter set is the first terminal A set with the highest priority in the set of QoS parameters of the first service that the device satisfies.
The method of claim 3, wherein the first message includes an identifier of the third QoS parameter set.
The method according to any one of claims 2 to 4, wherein the first message includes an identifier of the first terminal device.
The method according to any one of claims 1 to 5, wherein the first terminal device and the second terminal device belong to a first group, and the first group further includes a third terminal device ,as well as,

The method also includes:

The first terminal device receives information from the third terminal device for indicating a fourth QoS parameter set, where the fourth QoS parameter set is a QoS parameter of the first service satisfied by the third terminal device The set with the highest priority in the set;

The second QoS parameter set is a set with the highest priority among the QoS parameter sets of the first service that can be satisfied by the first terminal device, the second terminal device, and the third terminal device. .
The method according to any one of claims 1 to 6, wherein the sending, by the first terminal device, the second information according to the first information comprises:

The first terminal device updates the QoS parameter set corresponding to the second terminal device in the first mapping relationship corresponding to the first service to the first QoS parameter set;

In the case that the QoS parameter set with the lowest priority in the first mapping relationship is the second QoS parameter set, the first terminal device sends the second information;

The first mapping relationship is a correspondence between a terminal device and a set of QoS parameters of the terminal device, and the set of QoS parameters of the terminal device is a set of QoS parameters of the first service satisfied by the terminal device A set with the highest priority among them, and the terminal device includes the first terminal device and the second terminal device.
The method according to claim 7, wherein the method further comprises:

receiving, by the first terminal device, fourth information from the second terminal device, where the fourth information is used to indicate a first target QoS parameter set of the first service;

In the case that the first target QoS parameter set is the same as the second QoS parameter set, the first terminal device transmits the data of the first service according to the second QoS parameter set.
The method according to claim 8, wherein the first terminal device and the second terminal device belong to a first group, the first group further includes a third terminal device, and,

The method also includes:

receiving, by the first terminal device, fifth information from the third terminal device, where the fifth information is used to indicate a second target QoS parameter set of the first service;

In the case that the first target QoS parameter set, the second target QoS parameter set and the second QoS parameter set are the same, the first terminal device transmits the Data of the first business.
The method according to any one of claims 1 to 9, wherein the method further comprises:

the first terminal device transmits the data of the first service according to the first time information and the second set of QoS parameters,

Wherein, the first time information indicates the time when the first service uses the updated QoS parameter set.
A communication method, comprising:

The second terminal device sends first information, where the first information is used to indicate a first quality of service QoS parameter set, and the first QoS parameter set is the priority in the QoS parameter set of the first service satisfied by the second terminal device The highest level set;

The second terminal device receives second information from the first terminal device, where the second information is used to instruct the first service to use a second set of QoS parameters.
The method according to claim 11, wherein before the second terminal device sends the first information, the method further comprises:

the second terminal device receives the first message from the first terminal device,

Wherein, the first message includes third information used to indicate that the quality of service of the first terminal device has changed; or the first message is used to request QoS parameter set information.
The method according to claim 12, wherein the first message includes an identifier of a third QoS parameter set, and the third QoS parameter set is the QoS of the first service satisfied by the first terminal device The set with the highest priority in the set of parameters.
The method according to claim 12 or 13, wherein the first message includes an identifier of the first terminal device.
The method according to any one of claims 11 to 14, wherein the method further comprises:

The second terminal device updates the QoS parameter set corresponding to the second terminal device in the second mapping relationship corresponding to the first service to the first QoS parameter set;

The second terminal device sends fourth information, where the fourth information is used to indicate a first target QoS parameter set of the first service, and the first target QoS parameter set is the priority in the second mapping relationship The lowest set of QoS parameters;

The second mapping relationship is a correspondence between a terminal device and a QoS parameter set of the terminal device, and the QoS parameter set of the terminal device is a QoS parameter set of the first service satisfied by the terminal device A set with the highest priority among them, and the terminal device includes the first terminal device and the second terminal device.
The method of claim 15, wherein the method further comprises:

In the case that the first target QoS parameter set is the same as the second QoS parameter set, the second terminal device transmits the data of the first service according to the second QoS parameter set.
The method according to claim 15 or 16, wherein the first terminal device and the second terminal device belong to a first group, the first group further includes a third terminal device, and,

The method also includes:

receiving, by the second terminal device, fifth information from the third terminal device, where the fifth information is used to indicate a second target QoS parameter set of the first service;

In the case that the first target QoS parameter set, the second target QoS parameter set and the second QoS parameter set are the same, the second terminal device transmits the Data of the first business.
The method according to any one of claims 11 to 17, wherein the method further comprises:

the first terminal device transmits the data of the first service according to the first time information and the second set of QoS parameters,

Wherein, the first time information indicates the time when the first service uses the updated QoS parameter set.
A communication device, characterized by comprising a module for performing the method according to any one of claims 1 to 18.
A communication device, comprising a processor and a memory, wherein the processor is coupled to the memory, and the processor is configured to implement the method according to any one of claims 1 to 18.
A computer-readable storage medium, characterized by comprising a computer program, which, when the computer program runs on a computer, causes the computer to execute the method according to any one of claims 1 to 18.