WO2023116740A1

WO2023116740A1 - Communication method and communication apparatus

Info

Publication number: WO2023116740A1
Application number: PCT/CN2022/140556
Authority: WO
Inventors: 许胜锋
Original assignee: 华为技术有限公司
Priority date: 2021-12-24
Filing date: 2022-12-21
Publication date: 2023-06-29
Also published as: CN116347565A

Abstract

Provided in the embodiments of the present application are a communication method and a communication apparatus. The communication method comprises: a relay terminal determining a first proximity-based services communication 5 (PC5) discontinuous reception (DRX) parameter, wherein the first PC5 DRX parameter is used for PC5 communication between a remote terminal and the relay terminal, and the remote terminal is a terminal connected to a network or a target terminal by means of the relay terminal; and the relay terminal sending first information to the remote terminal, wherein the first information comprises: first indication information, which is used for indicating the first PC5 DRX parameter, or the first PC5 DRX parameter. By means of the method, an energy saving method when there is no data transmission can be determined by means of negotiation between terminal devices, thereby reducing the energy consumption of a terminal, and realizing better energy saving.

Description

Communication method and communication device

This application claims the priority of the Chinese patent application with the application number 202111601941.7 and the application title "Communication Method and Communication Device" filed with the China Patent Office on December 24, 2021, the entire contents of which are incorporated herein by reference.

technical field

The embodiments of the present application relate to the communication field, and, more specifically, relate to a communication method and a communication device.

Background technique

With the rapid development of mobile communications, the widespread use of new business types (such as video chat, virtual reality/augmented reality (VR/AR), etc.) has increased users' demands on bandwidth and delay. Device-to-Device (D2D) communication allows direct communication between user equipment (UE), which effectively reduces communication delay and improves the utilization of spectrum resources.

In D2D communication, UEs communicate through a proximity-based services communication 5 (PC5) interface, which can be used for information transmission on the data plane and the control plane. For a certain UE, when the communication signal between the UE and the radio access network (radio access network, RAN) device is not good or the UE cannot directly connect to the target UE, the relay UE (relay UE) can be used to UE) to assist the UE to access the network or connect to the target UE, so as to realize the communication between the UE (may be referred to as the remote UE) and the network or the target UE.

Since the battery energy of the UE is limited, how to better save energy for the UE in D2D communication has become an urgent problem to be solved in the industry.

Contents of the invention

Embodiments of the present application provide a communication method and a communication device, which can reduce energy consumption of a terminal in D2D communication.

In the first aspect, a communication method is provided, and the method can be executed by a terminal device, or can also be executed by a component (such as a chip or a circuit) of the terminal device, which is not limited. For the convenience of description, the following uses the Following the terminal execution as an example for description.

The method may include: the relay terminal determines that the proximity service communication 5 discontinuously receives the first PC5 DRX parameter, and the first PC5 DRX parameter is used for the PC5 communication between the remote terminal and the relay terminal, and the remote terminal is through the said The relay terminal is connected to the network or the terminal of the target terminal; the relay terminal sends the first information to the remote terminal, and the first information includes: the first indication information used to indicate the first PC5 DRX parameter, or the first PC5 DRX parameter .

Based on the above scheme, the remote terminal can know the first PC5DRX parameter used by the relay terminal for PC5 communication based on the first information, so that the remote terminal performs PC5 communication (communication based on the PC5 interface) with the relay terminal according to the first PC5 DRX parameter, It prevents the remote terminal from still listening to the wireless channel when there is no data transmission, and greatly reduces the energy consumption of the terminal.

With reference to the first aspect, in some implementation manners of the first aspect, the first indication information is a PC5 DRX mode, and the PC5 DRX mode corresponds to the first PC5 DRX parameter.

Based on the above technical solution, the first information can be the first PC5 DRX parameter, or the PC5 DRX mode corresponding to the first PC5 DRX parameter, that is to say, the first information can have different forms, which increases the flexibility of the solution .

With reference to the first aspect, in some implementations of the first aspect, the above method further includes: the relay terminal sends the correspondence between the first PC5 DRX parameter and the PC5 DRX mode to the remote terminal.

Furthermore, the remote terminal can receive the corresponding relationship of the first PC5 DRX parameters, and obtain the first PC5 DRX parameters according to the corresponding relationship, which realizes the flexibility for the remote terminal to obtain the first PC5 DRX parameters.

In conjunction with the first aspect, in some implementations of the first aspect, the above-mentioned relay terminal determining the first PC5 DRX parameter includes: the relay terminal determines the first PC5 DRX parameter according to the discontinuous reception of the DRX parameter of the relay terminal .

Based on the above technical solution, the time for the relay terminal to listen to the wireless channel is consistent with the time for the remote terminal to listen to the wireless channel, which prevents the remote terminal from still listening to the wireless channel when there is no data transmission, thereby reducing energy consumption.

With reference to the first aspect, in some implementation manners of the first aspect, the above-mentioned relay terminal sending the first information to the remote terminal includes: when the relay terminal enters an idle state and uses DRX parameters to receive downlink information, the relay terminal sends The remote terminal sends the first information.

Based on the above technical solution, when the relay terminal enters the idle state and uses DRX parameters to receive downlink information, the relay terminal will carry the first PC5 DRX parameters determined according to its own DRX parameters in the first information and send them to the remote terminal, and then The relay terminal can accurately notify the remote terminal to use the first PC5 DRX parameters according to its own communication status, so as to prevent the remote terminal from using inaccurate PC5 DRX parameters.

In conjunction with the first aspect, in some implementations of the first aspect, the above-mentioned relay terminal determines the first PC5 DRX parameter, including: the relay terminal receives eDRX parameters discontinuously according to the extension of the relay terminal, and determines the first PC5 DRX parameter .

Based on the above technical solution, the relay terminal determines the first PC5 DRX parameters used for PC5 communication according to its own eDRX parameters, so that the time for the relay terminal to listen to the wireless channel is consistent with the time for the remote terminal to listen to the wireless channel, avoiding The remote terminal still listens to the wireless channel when there is no data transmission, thereby reducing power consumption.

With reference to the first aspect, in some implementations of the first aspect, the above-mentioned relay terminal sending the first information to the remote terminal includes: when the relay terminal enters the idle state and uses eDRX parameters to receive downlink information, the relay terminal sends the first information to the remote terminal. The remote terminal sends the first information.

Based on the above technical solution, when the relay terminal enters the idle state and uses eDRX parameters to receive downlink information, the relay terminal will carry the first PC5 DRX parameters determined according to its own eDRX parameters and send them to the remote terminal in the first information, and then The relay terminal can accurately notify the remote terminal to use the first PC5 DRX parameters according to its own communication status, so as to prevent the remote terminal from using inaccurate PC5 DRX parameters.

In conjunction with the first aspect, in some implementations of the first aspect, the above-mentioned relay terminal determining the first PC5 DRX parameter includes: the relay terminal determines the first PC5 DRX parameter according to the keep-alive timing period, and the keep-alive timing period The period for sending keep-alive signaling for the relay terminal.

Based on the above technical solution, the relay terminal determines the first PC5 DRX parameters for PC5 communication according to its own keep-alive timing period, so that the remote terminal only needs to listen to the wireless channel at a specific time, thereby reducing energy consumption.

With reference to the first aspect, in some implementation manners of the first aspect, the above-mentioned relay terminal sending the first information to the remote terminal includes: when the relay terminal enters the connection MICO mode caused by movement only, the relay terminal sends to the remote terminal first information.

Based on the above technical solution, when the relay terminal enters the connection MICO mode caused by movement only, the relay terminal will carry the first PC5 DRX parameter determined according to its own keep-alive timing period in the first information and send it to the remote terminal, and then The following terminal can accurately notify the remote terminal to use the first PC5 DRX parameters according to its own communication status, so as to prevent the remote terminal from using inaccurate PC5 DRX parameters.

With reference to the first aspect, in some implementation manners of the first aspect, the above-mentioned relay terminal determining the first PC5 DRX parameters includes: the relay terminal determining the first PC5 DRX parameters according to the service characteristics of the remote terminal. It should be understood that the service characteristic may be the service arrival period, or the delay tolerance value of the remote terminal for the downlink service.

Based on the above technical solution, the relay terminal determines the first PC5 DRX parameters according to the service characteristics, thereby avoiding that the remote terminal still listens to the wireless channel when the service has no data transmission, thereby reducing energy consumption.

With reference to the first aspect, in some implementation manners of the first aspect, the first PC5 DRX parameter includes a first DRX cycle and a first receiving window length.

With reference to the first aspect, in some implementation manners of the first aspect, the above-mentioned relay terminal determining the first PC5 DRX parameter includes: the relay terminal determines the first PC5 DRX parameter according to the second PC5 DRX parameter, and the second PC5 DRX parameter determines the first PC5 DRX parameter. DRX parameters are used for PC5 communication between the target terminal and the relay terminal.

Based on the above technical solution, the relay terminal determines the first PC5 DRX parameters used for PC5 communication according to its own second PC5 DRX parameters, thereby preventing the remote terminal from still listening to the wireless channel when there is no data transmission, thereby reducing energy consumption.

In the second aspect, a communication method is provided. The method can be executed by a terminal device, or can also be executed by a component (such as a chip or a circuit) of the terminal device. This application does not limit this. For the convenience of description, the following uses The execution by the remote terminal is taken as an example for description.

The method may include: the remote terminal receives first information from the relay terminal, where the first information includes: first indication information for indicating that the ProSe communication 5 discontinuously receives the first PC5 DRX parameter, or the first PC5 DRX parameter; the remote terminal receives information from the relay terminal according to the first PC5 DRX parameter; wherein, the remote terminal is a terminal connected to the network through the relay terminal.

Based on the above solution, the remote terminal can know the first PC5 DRX parameter used by the relay terminal for PC5 communication based on the first information, so that the remote terminal performs PC5 communication with the relay terminal according to the first PC5 DRX parameter (communication based on the PC5 interface) , avoiding that the remote terminal still listens to the wireless channel when there is no data transmission, and greatly reduces the energy consumption of the terminal.

With reference to the second aspect, in some implementation manners of the second aspect, the first indication information is a PC5 DRX mode, and the PC5 DRX mode corresponds to the first PC5 DRX parameter.

With reference to the second aspect, in some implementations of the second aspect, the above method further includes: the remote terminal receives the corresponding relationship between the first PC5 DRX parameter and the PC5 DRX mode from the relay terminal; when the first information is the first indication information, the remote terminal determines the first PC5 DRX parameter according to the corresponding relationship and the first indication information.

With reference to the second aspect, in some implementation manners of the second aspect, the first PC5 DRX parameter includes a DRX cycle and a receiving window length.

In the third aspect, a communication method is provided, which can be executed by a terminal device, or can also be executed by a component (such as a chip or a circuit) of the terminal device, which is not limited. For the convenience of description, the following uses the Following the terminal execution as an example for description.

The method may include: the relay terminal learns that none of the remote terminals corresponding to the relay terminal has a data receiving requirement; the relay terminal sends a request to the network device to enter the mobile-only connection MICO mode; the relay terminal receives a response from the network device A response message to the request; the relay terminal enters the MICO mode according to the response message; wherein, the remote terminal corresponding to the relay terminal includes one or more terminals connected to the network through the relay terminal.

Based on the above technical solution, the relay terminal requests to enter the MICO mode after knowing that none of its corresponding remote terminals has a data reception requirement, so that the relay terminal still listens to the wireless channel when all remote terminals have no downlink data reception requirements. Therefore, the energy consumption of the terminal is effectively reduced. Furthermore, the relay terminal determines whether the relay terminal requests to enter the MICO mode according to the downlink data reception requirement of the remote terminal, which greatly reduces the energy consumption of the terminal.

With reference to the third aspect, in some implementation manners of the third aspect, the above-mentioned relay terminal learns that none of the remote terminals corresponding to the relay terminal has a data receiving requirement, including: the relay terminal receives the data from the remote terminal corresponding to the relay terminal First demand indication information, the first demand indication information is used to indicate that there is no data receiving demand; the relay terminal learns that none of the remote terminals corresponding to the relay terminal exists according to the first demand indication information of the remote terminal corresponding to the relay terminal Data reception requirements.

Based on the above technical solution, the relay terminal can determine to request to enter the MICO mode according to the absence of data reception requirements of all the remote terminals served, thereby avoiding unnecessary listening to wireless channels, thereby reducing energy consumption.

In the fourth aspect, a communication method is provided. The method can be executed by a terminal device, or can also be executed by a component (such as a chip or a circuit) of the terminal device, which is not limited. For the convenience of description, the following uses remote Terminal execution is taken as an example for description.

The method may include: the remote terminal determines whether there is a demand for data reception; when there is no demand for data reception, the remote terminal sends first demand indication information to the relay terminal, and the first demand indication is used to indicate that there is no data reception demand; wherein, A remote terminal is a terminal connected to the network through a relay terminal.

Based on the above technical solution, the remote terminal notifies the relay terminal of its own data reception requirements, so that the relay terminal can send a request to the network device to enter the MICO mode according to the fact that none of the corresponding remote terminals has data reception requirements, thereby realizing the Relay energy saving between terminal and network communication.

In the fifth aspect, a communication method is provided, and the method may be executed by a terminal device, or may also be executed by a component (such as a chip or a circuit) of the terminal device, which is not limited. For the convenience of description, the following uses the Following the terminal execution as an example for description.

The method may include: the relay terminal receives the discontinuous reception DRX parameter of the remote terminal corresponding to the relay terminal; the relay terminal determines the DRX parameter of the relay terminal according to the DRX parameter of the remote terminal; or, the relay terminal receives The extension of the remote terminal corresponding to the relay terminal discontinuously receives eDRX parameters; the relay terminal determines the eDRX parameters of the relay terminal according to the eDRX parameters of the remote terminal; wherein, the remote terminal corresponding to the relay terminal includes one or more terminals.

Based on the above technical solution, the relay terminal determines the DRX parameters or eDRX parameters of the relay terminal by knowing the DRX parameters or eDRX parameters of the corresponding remote terminal. By adopting the method provided by the above embodiment, the relay terminal only listens to the wireless channel at the possible paging time of the remote terminal, which greatly reduces the energy consumption of the terminal.

In the sixth aspect, a communication method is provided, which can be executed by a terminal device, or can also be executed by a component (such as a chip or a circuit) of the terminal device, which is not limited. Terminal execution is taken as an example for description.

The method may include: the remote terminal sends discontinuous reception DRX parameters or extended discontinuous reception eDRX parameters of the remote terminal to the relay terminal; wherein, the remote terminal is a terminal connected to the network through the relay terminal.

Based on the above technical solution, the remote terminal sends its own DRX parameters or eDRX parameters to the relay terminal, so that the relay terminal determines the DRX parameters or eDRX parameters of the relay terminal itself according to the DRX parameters or eDRX parameters of the corresponding remote terminal, The relay terminal only listens to the wireless channel during the possible paging time of the remote terminal, which greatly reduces the energy consumption of the terminal.

In the seventh aspect, a communication method is provided, and the method may be executed by a terminal device, or may also be executed by a component (such as a chip or a circuit) of the terminal device, which is not limited. For the convenience of description, the following uses the Following the terminal execution as an example for description.

The method may include: the relay terminal receives the downlink data of the remote terminal, the remote terminal is in a first mode, and the first mode is used to indicate that only the function of receiving PC5 interface signaling is enabled or the function of receiving PC5 interface data is not enabled; The relay terminal sends third information to the remote terminal, where the third information is used to notify that there is downlink data of the remote terminal; wherein the remote terminal is a terminal connected to the network device or the target terminal through the relay terminal.

Based on the above technical solution, when the remote terminal has no data transmission, the relay terminal instructs the remote terminal to turn off the function of receiving data, which prevents the remote terminal from still listening to the wireless channel when there is no data transmission, and greatly reduces the energy consumption of the terminal.

With reference to the seventh aspect, in some implementation manners of the seventh aspect, the above method further includes: the relay terminal determines that the remote terminal is in the first mode.

Based on the above technical solution, after the relay terminal determines that the remote terminal is in the first mode that only receives PC5 signaling, it can not directly send data to the remote terminal, thereby reducing energy consumption.

With reference to the seventh aspect, in some implementation manners of the seventh aspect, the above-mentioned relay terminal determining that the remote terminal is in the first mode includes: the relay terminal receives first mode information from the remote terminal, and the first mode information uses It indicates that the remote terminal is in the first mode.

Based on the above technical solution, the relay terminal can know that the remote terminal is in the first mode according to the first mode information, which realizes the flexibility for the relay terminal to know that the remote terminal is in the first mode.

With reference to the seventh aspect, in some implementation manners of the seventh aspect, the above-mentioned relay terminal determining that the remote terminal is in the first mode includes: if the relay terminal does not receive the downlink data of the remote terminal within a preset time period, Then the relay terminal sends fourth information to the remote terminal, where the fourth information is used to trigger the remote terminal to enter the first mode.

Based on the above technical solution, the relay terminal can instruct the remote terminal to enter the first mode, which realizes the flexibility for the relay terminal to know that the remote terminal is in the first mode. With reference to the seventh aspect, in some implementation manners of the seventh aspect, the above method further includes: the relay terminal stores first mode information of the remote terminal, where the first mode information is used to indicate that the remote terminal is in the first mode.

Based on the above technical solution, when the relay terminal determines that the remote terminal is in the first mode, it stores the first mode information representing that the remote terminal is in the first mode, so that after receiving the downlink data from the remote terminal, it does not directly send the remote terminal Send data, thereby reducing energy consumption.

With reference to the seventh aspect, in some implementation manners of the seventh aspect, the above method further includes: the relay terminal stores the downlink data.

With reference to the seventh aspect, in some implementations of the seventh aspect, the above method further includes: the relay terminal receives first configuration information from the remote terminal, where the first configuration information includes a bandwidth part (bandwidth part, BWP) and/or Unlicensed spectrum: the relay terminal sends downlink data to the remote terminal according to the first configuration information.

Based on the above technical solution, the relay terminal can send downlink data according to the BWP and/or unlicensed spectrum sent by the remote terminal, so as to realize flexible user plane configuration.

In the eighth aspect, a communication method is provided, and the method can be executed by a terminal device, or can also be executed by a component (such as a chip or a circuit) of the terminal device, which is not limited, and for the convenience of description, the following uses a remote Terminal execution is taken as an example for description.

The method may include: the remote terminal receives third information from the relay terminal, and the third information is used to notify that there is downlink data of the remote terminal; the remote terminal establishes a user plane connection according to the third information, and the user plane connection is used for Transmitting downlink data; wherein, the remote terminal is a terminal connected to a network device or a target terminal through a relay terminal.

Based on the above technical solution, when the remote terminal does not transmit data, the remote terminal disables the function of receiving data. It avoids that the remote terminal still listens to the wireless channel when there is no data transmission. The energy consumption of the terminal is greatly reduced.

With reference to the eighth aspect, in some implementation manners of the eighth aspect, the above-mentioned remote terminal receiving the third information from the relay terminal includes: the remote terminal in the first mode receiving the third information from the relay terminal, The first mode is used to represent that only the function of receiving PC5 interface signaling is enabled or the function of receiving PC5 interface data is not enabled.

With reference to the eighth aspect, in some implementations of the eighth aspect, the above method further includes: the remote terminal switches from the first mode to the second mode according to the third information, and the second mode is used to indicate that the receiving PC5 interface data is enabled function.

Based on the above technical solution, the remote terminal starts the function of receiving data only after receiving the third information, which prevents the remote terminal from still listening to the wireless channel when there is no data transmission, thereby reducing energy consumption.

With reference to the eighth aspect, in some implementation manners of the eighth aspect, the above method further includes: the remote terminal enters the first mode when there is no data transmission by the remote terminal within a preset period of time.

Based on the above technical solution, the remote terminal can enter the first mode, which realizes the flexibility for the remote terminal to enter the first mode.

With reference to the eighth aspect, in some implementation manners of the eighth aspect, the above method further includes: the remote terminal sends first mode information to the relay terminal, where the first mode information is used to indicate that the remote terminal is in the first mode.

Based on the above technical solution, the relay terminal can learn that the remote terminal is in the first mode, which realizes the flexibility for the relay terminal to learn that the remote terminal is in the first mode.

With reference to the eighth aspect, in some implementations of the eighth aspect, the above method further includes: the remote terminal receives fourth information from the relay terminal, where the fourth information is used to trigger the remote terminal to enter the first mode; the remote terminal according to The fourth message enters the first mode.

Based on the above technical solution, the remote terminal enters the first mode according to the fourth information, which realizes the flexibility of the remote terminal entering the first mode.

With reference to the eighth aspect, in some implementation manners of the eighth aspect, the above method further includes: the remote terminal sends first configuration information to the relay terminal, the first configuration information is used for the relay terminal to send downlink data, and the first The configuration information includes the bandwidth part BWP and/or unlicensed spectrum; the remote terminal receives downlink data from the relay terminal.

Based on the above technical solution, the remote terminal sends the BWP and/or unlicensed spectrum for sending downlink data to the relay terminal, so as to realize flexible user plane configuration.

A ninth aspect provides a communication method, which can be executed by a terminal device, or can also be executed by a component (such as a chip or a circuit) of the terminal device, which is not limited. For the convenience of description, the following uses the Following the terminal execution as an example for description.

The method may include: the relay terminal receives fifth information from the remote terminal, the fifth information is used to notify the remote terminal that there is uplink data; the relay terminal establishes a user plane connection according to the fifth information, and the user plane connection uses for transmitting uplink data; wherein, the remote terminal is a terminal connected to a network device or a target terminal through a relay terminal.

Based on the above technical solution, when the relay terminal does not receive the data transmission from the remote terminal, the relay terminal disables the function of receiving data. This prevents the relay terminal from still listening to the wireless channel when there is no data transmission, and greatly reduces the energy consumption of the terminal.

With reference to the ninth aspect, in some implementation manners of the ninth aspect, the receiving the fifth information from the remote terminal by the relay terminal includes: receiving the fifth information from the remote terminal by the relay terminal in the first mode, The first mode is used to represent that only the function of receiving PC5 interface signaling is enabled or the function of receiving PC5 interface data is not enabled.

With reference to the ninth aspect, in some implementations of the ninth aspect, the above method further includes: the relay terminal switches from the first mode to the second mode according to the fifth information, and the second mode is used to indicate that the receiving PC5 interface is turned on function of the data.

Based on the above technical solution, the relay terminal only starts the function of receiving data after receiving the fifth information, which prevents the remote terminal from still listening to the wireless channel when there is no data transmission, thereby reducing energy consumption.

With reference to the ninth aspect, in some implementation manners of the ninth aspect, the above method further includes: the relay terminal does not receive the uplink data transmission from the remote terminal within a preset time period, and the relay terminal enters the first mode.

Based on the above technical solution, the relay terminal can enter the first mode, which realizes the flexibility of the relay terminal entering the first mode.

With reference to the ninth aspect, in some implementation manners of the ninth aspect, the above method further includes: the relay terminal sends second mode information to the remote terminal, where the second mode information is used to indicate that the relay terminal is in the first mode.

Based on the above technical solution, the remote terminal can know that the relay terminal is in the first mode, which realizes the flexibility for the remote terminal to know that the relay terminal is in the first mode.

With reference to the ninth aspect, in some implementations of the ninth aspect, the above method further includes: the relay terminal receives sixth information from the remote terminal, where the sixth information is used to trigger the relay terminal to enter the first mode; the relay terminal The terminal enters the first mode according to the sixth information.

Based on the above technical solution, the relay terminal enters the first mode according to the sixth information, which realizes the flexibility for the remote terminal to enter the first mode.

With reference to the ninth aspect, in some implementation manners of the ninth aspect, the above method further includes: the relay terminal sends second configuration information to the remote terminal, the second configuration information is used for the remote terminal to send uplink data, and the second configuration information The information includes BWP and/or unlicensed spectrum; the relay terminal receives uplink data from the remote terminal.

Based on the above technical solution, the relay terminal sends the BWP and/or unlicensed spectrum for sending uplink data to the remote terminal, so as to realize flexible user plane configuration.

In the tenth aspect, a communication method is provided, and the method may be executed by a terminal device, or may also be executed by a component (such as a chip or a circuit) of the terminal device, which is not limited. Terminal execution is taken as an example for description.

The method may include: the remote terminal determines that there is uplink data; the remote terminal sends fifth information to the relay terminal, the fifth information is used to notify the relay terminal that there is uplink data, wherein the relay terminal is in the first mode, the first One mode is used to indicate that only the function of receiving PC5 interface signaling is enabled or the function of receiving PC5 interface data is not enabled, and the remote terminal is a terminal connected to a network device or a target terminal through a relay terminal.

Based on the above technical solution, when the remote terminal has no data transmission, the relay terminal turns off the function of receiving data, which prevents the relay terminal from still listening to the wireless channel when there is no data transmission, and greatly reduces the energy consumption of the terminal.

With reference to the tenth aspect, in some implementation manners of the tenth aspect, the above method further includes: the remote terminal determines that the relay terminal is in the first mode.

Based on the above technical solution, after the remote terminal determines that the relay terminal is in the first mode that only receives PC5 signaling, it can not directly send data to the remote terminal, thereby reducing energy consumption.

With reference to the tenth aspect, in some implementation manners of the tenth aspect, the remote terminal determining that the relay terminal is in the first mode includes: the remote terminal receiving second mode information from the relay terminal, and the second mode information is used to It indicates that the relay terminal is in the first mode.

Based on the above technical solution, the remote terminal can know that the relay terminal is in the first mode according to the second mode information, which realizes the flexibility for the remote terminal to know that the relay terminal is in the first mode.

With reference to the tenth aspect, in some implementation manners of the tenth aspect, the above-mentioned remote terminal determines that the relay terminal is in the first mode, including: if the remote terminal does not transmit uplink data within a preset period of time, the remote terminal sends the relay terminal The terminal sends sixth information, where the sixth information is used to trigger the relay terminal to enter the first mode.

Based on the above technical solution, the remote terminal can instruct the relay terminal to enter the first mode, which realizes the flexibility for the remote terminal to learn that the relay terminal is in the first mode.

With reference to the tenth aspect, in some implementation manners of the tenth aspect, the above method further includes: the remote terminal storing second mode information of the relay terminal, where the second mode information is used to indicate that the relay terminal is in the first mode.

Based on the above technical solution, when the remote terminal determines that the relay terminal is in the first mode, it stores the second mode information representing that the relay terminal is in the first mode, so that after receiving uplink data, it does not directly report to the relay terminal Send data, thereby reducing energy consumption.

With reference to the tenth aspect, in some implementations of the tenth aspect, the above method further includes: the remote terminal receives second configuration information from the relay terminal, where the second configuration information includes BWP and/or unlicensed spectrum; the remote terminal Send uplink data to the relay terminal according to the second configuration information.

Based on the above technical solution, the remote terminal can send uplink data according to the BWP and/or the unlicensed spectrum sent by the relay terminal, so as to realize flexible user plane configuration.

In the eleventh aspect, there is provided a communication device, including a unit for performing the method shown in the first aspect above, and the communication device may be a relay terminal, or may also be a chip set in the relay terminal or circuit implementation, which is not limited in this application.

The communication device includes:

A processing unit, configured to determine a first PC5 DRX parameter for non-continuous reception of ProSe communication 5, where the first PC5 DRX parameter is used for PC5 communication between a remote terminal and a relay terminal, where the remote terminal passes through the relay terminal A terminal connected to the network or the target terminal; a transceiver unit configured to send first information to the remote terminal, the first information including: first indication information used to indicate the first PC5 DRX parameter, or the first PC5 DRX parameter.

With reference to the eleventh aspect, in some implementation manners of the eleventh aspect, the first indication information is a PC5 DRX mode, and the PC5 DRX mode corresponds to the first PC5 DRX parameter.

With reference to the eleventh aspect, in some implementations of the eleventh aspect, the above-mentioned device further includes: a transceiver unit, further configured to send the correspondence between the first PC5 DRX parameter and the PC5 DRX mode to the remote terminal.

With reference to the eleventh aspect, in some implementation manners of the eleventh aspect, the processing unit is further configured to: determine the first PC5 DRX parameter according to the discontinuous reception DRX parameter of the relay terminal.

With reference to the eleventh aspect, in some implementation manners of the eleventh aspect, the transceiver unit is further configured to: when the relay terminal enters an idle state and uses DRX parameters to receive downlink information, send the first information.

With reference to the eleventh aspect, in some implementation manners of the eleventh aspect, the processing unit is further configured to: determine the first PC5 DRX parameter according to the extended discontinuous reception eDRX parameter of the relay terminal.

With reference to the eleventh aspect, in some implementations of the eleventh aspect, the transceiver unit is further configured to: when the relay terminal enters an idle state and uses eDRX parameters to receive downlink information, send the first information.

In conjunction with the eleventh aspect, in some implementations of the eleventh aspect, the processing unit is further configured to: determine the first PC5 DRX parameter according to the keep-alive timing period, the keep-alive timing period is for the relay terminal to send a keep-alive The period of live signaling.

With reference to the eleventh aspect, in some implementation manners of the eleventh aspect, the transceiving unit is further configured to: send the first information to the remote terminal when the relay terminal enters the connection-only MICO mode induced by movement.

With reference to the eleventh aspect, in some implementation manners of the eleventh aspect, the processing unit is further configured to: determine the first PC5 DRX parameter according to the service characteristics of the remote terminal.

It should be understood that the service characteristic may be the service arrival period, or the delay tolerance value of the remote terminal for the downlink service.

With reference to the eleventh aspect, in some implementation manners of the eleventh aspect, the first PC5 DRX parameter includes a DRX cycle and a receiving window length.

For the explanations and beneficial effects of the device-related content of the communication provided in the eleventh aspect, reference may be made to the method shown in the first aspect, which will not be repeated here.

A twelfth aspect provides a communication device, including a unit for performing the method shown in the second aspect above, the communication device may be a remote terminal, or may also be a chip or a circuit set in the remote terminal Execution, this application does not limit it.

The communication device includes:

A transceiver unit, configured to receive first information from the relay terminal, the first information including: first indication information for indicating that the ProSe communication 5 discontinuously receives the first PC5 DRX parameter, or the first PC5 DRX parameter; The processing unit is configured to receive information from the relay terminal according to the first PC5 DRX parameter; wherein, the remote terminal is a terminal connected to the network or the target terminal through the relay terminal.

With reference to the twelfth aspect, in some implementation manners of the twelfth aspect, the first indication information is a PC5 DRX mode, and the PC5 DRX mode corresponds to the first PC5 DRX parameter.

With reference to the twelfth aspect, in some implementation manners of the twelfth aspect, the above-mentioned device further includes: a transceiver unit, further configured to receive the corresponding relationship between the first PC5 DRX parameter and the PC5 DRX mode from the relay terminal; the processing unit , is also used to determine the first PC5 DRX parameter according to the correspondence relationship and the first indication information when the first information is the first indication information.

With reference to the twelfth aspect, in some implementation manners of the twelfth aspect, the first PC5 DRX parameter includes a DRX cycle and a receiving window length.

For the explanations and beneficial effects of the communication device-related content provided in the twelfth aspect, reference can be made to the method shown in the second aspect, which will not be repeated here.

A thirteenth aspect provides a communication device, including a unit for performing the method shown in the third aspect above, the communication device may be a relay terminal, or may also be a chip set in the relay terminal or circuit implementation, which is not limited in this application.

The communication device includes:

The processing unit is used to know that there is no data receiving demand in the remote terminal corresponding to the relay terminal; the sending and receiving unit is used to send a request message to the network device to enter the connection MICO mode caused by movement only; the sending and receiving unit is also used to receive A response message from the network device in response to the request message; the processing unit is also configured to enter the MICO mode according to the response message; wherein, the remote terminal corresponding to the relay terminal includes one or more terminals connected to the network through the relay terminal .

With reference to the thirteenth aspect, in some implementation manners of the thirteenth aspect, the above-mentioned apparatus further includes: a transceiver unit, further configured to receive first demand indication information from a remote terminal corresponding to the relay terminal, the first demand indication The information is used to indicate that there is no data receiving requirement; the processing unit is further configured to learn that none of the remote terminals corresponding to the relay terminal has a data receiving requirement according to the first requirement indication information of the remote terminal corresponding to the relay terminal.

For the explanation and beneficial effect of the communication device-related content provided by the thirteenth aspect, reference can be made to the method shown in the third aspect, which will not be repeated here.

A fourteenth aspect provides a communication device, including a unit for performing the method shown in the fourth aspect above, the communication device may be a remote terminal, or may also be a chip or a circuit set in the remote terminal Execution, this application does not limit it.

The communication device includes:

a processing unit, configured to determine whether there is a data receiving requirement;

The transceiver unit is configured to send the first demand indication information to the relay terminal when there is no data reception demand, and the first demand indication is used to indicate that there is no data reception demand; wherein, the remote terminal is connected to the network through the relay terminal terminal.

For the explanation and beneficial effect of the communication device-related content provided by the fourteenth aspect, reference can be made to the method shown in the fourth aspect, which will not be repeated here.

A fifteenth aspect provides a communication device, including a unit for performing the method shown in the fifth aspect above. The communication device may be a relay terminal, or may also be a chip set in the relay terminal or circuit implementation, which is not limited in this application.

The communication device includes:

The transceiver unit is used for the relay terminal to receive the discontinuous reception DRX parameters of the remote terminal corresponding to the relay terminal; the processing unit is used for determining the DRX parameters of the relay terminal according to the DRX parameters of the remote terminal; or, the transceiver unit , is also used to receive the extended discontinuous reception eDRX parameter of the remote terminal corresponding to the relay terminal; the processing unit is also used to determine the eDRX parameter of the relay terminal according to the eDRX parameter of the remote terminal; wherein, the remote terminal corresponding to the relay terminal Consists of one or more terminals connected to the network through a relay terminal.

The explanations and beneficial effects of the communication device-related content provided by the fifteenth aspect can refer to the method shown in the fifth aspect, which will not be repeated here.

A sixteenth aspect provides a communication device, including a unit for performing the method shown in the sixth aspect above. The communication device may be a remote terminal, or may also be a chip or a circuit set in the remote terminal Execution, this application does not limit it.

The communication device includes:

The transceiver unit is configured to send the discontinuous reception DRX parameters or extended discontinuous reception eDRX parameters of the remote terminal to the relay terminal; wherein, the remote terminal is a terminal connected to the network through the relay terminal.

For the explanation and beneficial effect of the device-related content of the communication provided by the sixteenth aspect, reference can be made to the method shown in the sixth aspect, which will not be repeated here.

A seventeenth aspect provides a communication device, including a unit for performing the method shown in the seventh aspect above, and the communication device may be a relay terminal, or may also be a chip set in the relay terminal or circuit implementation, which is not limited in this application.

The communication device includes:

The transceiver unit is used to receive the downlink data of the remote terminal, the remote terminal is in the first mode, and the first mode is used to indicate that only the function of receiving PC5 interface signaling is enabled or the function of receiving PC5 interface data is not enabled; the transceiver unit, It is also used to send third information to the remote terminal, where the third information is used to notify that there is downlink data of the remote terminal; wherein, the remote terminal is a terminal connected to the network device or the target terminal through the relay terminal.

With reference to the seventeenth aspect, in some implementation manners of the seventeenth aspect, the above apparatus further includes: a processing unit, configured to determine that the remote terminal is in the first mode.

With reference to the seventeenth aspect, in some implementation manners of the seventeenth aspect, the transceiver unit is further configured to: receive first mode information from the remote terminal, where the first mode information is used to indicate that the remote terminal is in the first mode.

With reference to the seventeenth aspect, in some implementations of the seventeenth aspect, the transceiver unit is further configured to: if the relay terminal does not receive the downlink data from the remote terminal within a preset time period, send the fourth information to the remote terminal , the fourth information is used to trigger the remote terminal to enter the first mode.

With reference to the seventeenth aspect, in some implementation manners of the seventeenth aspect, the above device further includes: a storage unit configured to store first mode information of the remote terminal, where the first mode information is used to indicate that the remote terminal is in the first model.

With reference to the seventeenth aspect, in some implementation manners of the seventeenth aspect, the above device further includes: a storage unit, further configured to store the downlink data.

With reference to the seventeenth aspect, in some implementation manners of the seventeenth aspect, the above-mentioned apparatus further includes: a transceiver unit, further configured to receive first configuration information from the remote terminal, where the first configuration information includes a bandwidth part BWP and/or The unlicensed spectrum; the transceiver unit, further configured to send downlink data to the remote terminal according to the first configuration information.

For the explanations and beneficial effects of the communication device-related content provided by the seventeenth aspect, reference can be made to the method shown in the seventh aspect, which will not be repeated here.

In an eighteenth aspect, a communication device is provided, including a unit for performing the method shown in the eighth aspect above, and the communication device may be a remote terminal, or may also be a chip or a circuit set in the remote terminal Execution, this application does not limit it.

The communication device includes:

The transceiver unit is configured to receive third information from the relay terminal, the third information is used to notify that there is downlink data of the remote terminal; the processing unit is configured to establish a user plane connection according to the third information, and the user plane connection uses for transmitting downlink data; wherein, the remote terminal is a terminal connected to a network device or a target terminal through a relay terminal.

With reference to the eighteenth aspect, in some implementations of the eighteenth aspect, the transceiver unit is further configured to: receive the third information from the relay terminal, and the first mode is used to indicate that only the function of receiving PC5 interface signaling is enabled Or the function of receiving PC5 interface data is not enabled.

With reference to the eighteenth aspect, in some implementation manners of the eighteenth aspect, the above-mentioned device further includes: a processing unit, further configured to switch from the first mode to the second mode according to the third information, and the second mode is used for Characterizes the function of receiving PC5 interface data.

With reference to the eighteenth aspect, in some implementation manners of the eighteenth aspect, the above-mentioned device further includes: a processing unit, further configured to enter the first mode if the remote terminal does not transmit data within a preset period of time.

With reference to the eighteenth aspect, in some implementation manners of the eighteenth aspect, the above-mentioned apparatus further includes: a transceiver unit, further configured to send first mode information to the relay terminal, where the first mode information is used to indicate that the remote terminal is in first mode.

With reference to the eighteenth aspect, in some implementation manners of the eighteenth aspect, the above method further includes: a transceiver unit, further configured to receive fourth information from the relay terminal, where the fourth information is used to trigger the remote terminal to enter the first A mode: the processing unit is further configured to enter the first mode according to the fourth information.

With reference to the eighteenth aspect, in some implementation manners of the eighteenth aspect, the above method further includes: a transceiver unit, further configured to send first configuration information to the relay terminal, where the first configuration information is used for the relay terminal to send For the downlink data, the first configuration information includes the bandwidth part BWP and/or the unlicensed spectrum; the transceiver unit is also configured to receive the downlink data from the relay terminal.

The explanations and beneficial effects of the communication device-related content provided by the eighteenth aspect can refer to the method shown in the eighth aspect, which will not be repeated here.

A nineteenth aspect provides a communication device, including a unit for performing the method shown in the ninth aspect above, the communication device may be a relay terminal, or may also be a chip set in the relay terminal or circuit implementation, which is not limited in this application.

The communication device includes:

The transceiver unit is configured to receive fifth information from the remote terminal, the fifth information is used to notify the remote terminal that there is uplink data; the processing unit is configured to establish a user plane connection according to the fifth information, and the user plane connection is used for transmit uplink data; wherein, the remote terminal is a terminal connected to a network device or a target terminal through a relay terminal.

With reference to the nineteenth aspect, in some implementations of the nineteenth aspect, the transceiver unit is further configured to: receive the fifth information from the remote terminal, and the first mode is used to indicate that only the PC5 interface signaling is enabled The function or the function of receiving PC5 interface data is not enabled.

With reference to the nineteenth aspect, in some implementation manners of the nineteenth aspect, the above-mentioned device further includes: a processing unit, further configured to switch from the first mode to the second mode according to the fifth information, and the second mode is used for Characterizes the function of receiving PC5 interface data.

With reference to the nineteenth aspect, in some implementation manners of the nineteenth aspect, the above-mentioned device further includes: a processing unit, further configured to enter the first model.

With reference to the nineteenth aspect, in some implementation manners of the nineteenth aspect, the above-mentioned apparatus further includes: a transceiver unit, further configured to send second mode information to the remote terminal, where the second mode information is used to indicate that the relay terminal is in first mode.

With reference to the nineteenth aspect, in some implementation manners of the nineteenth aspect, the above device further includes: a transceiver unit, further configured to receive sixth information from the remote terminal, where the sixth information is used to trigger the relay terminal to enter the first A mode: the processing unit is further configured to enter the first mode according to the sixth information.

With reference to the nineteenth aspect, in some implementation manners of the nineteenth aspect, the above device further includes: a transceiver unit, further configured to send second configuration information to the remote terminal, where the second configuration information is used for the remote terminal to send uplink data , the second configuration information includes a bandwidth part BWP and/or an unlicensed spectrum; the transceiver unit is further configured to receive uplink data from a remote terminal.

The explanations and beneficial effects of the communication device-related content provided by the nineteenth aspect can refer to the method shown in the ninth aspect, which will not be repeated here.

In a twentieth aspect, a communication device is provided, including a unit for performing the method shown in the tenth aspect above, and the communication device may be a remote terminal, or may also be a chip or a circuit set in the remote terminal Execution, this application does not limit it.

The communication device includes:

The processing unit is used for the remote terminal to determine that there is uplink data; the transceiver unit is used for sending fifth information to the relay terminal, where the fifth information is used to notify the relay terminal that there is uplink data, wherein the relay terminal is in the first mode, The first mode is used to indicate that only the function of receiving PC5 interface signaling is enabled or the function of receiving PC5 interface data is not enabled, and the remote terminal is a terminal connected to a network device or a target terminal through a relay terminal.

With reference to the twentieth aspect, in some implementation manners of the twentieth aspect, the above-mentioned apparatus further includes: a processing unit, further configured to determine that the relay terminal is in the first mode.

With reference to the twentieth aspect, in some implementations of the twentieth aspect, the transceiver unit is further configured to: receive second mode information from the relay terminal, where the second mode information is used to indicate that the relay terminal is in the first mode .

With reference to the twentieth aspect, in some implementations of the twentieth aspect, the transceiver unit is further configured to: if the remote terminal does not transmit uplink data within a preset time period, send sixth information to the relay terminal, the sixth The information is used to trigger the relay terminal to enter the first mode.

With reference to the twentieth aspect, in some implementation manners of the twentieth aspect, the above-mentioned apparatus further includes: a storage unit configured to store second mode information of the relay terminal, where the second mode information is used to indicate that the relay terminal is in first mode.

With reference to the twentieth aspect, in some implementation manners of the twentieth aspect, the above-mentioned apparatus further includes: a transceiver unit, further configured to receive second configuration information from the relay terminal, where the second configuration information includes the bandwidth part BWP and /or unlicensed spectrum; the transceiver unit is further configured to send uplink data to the relay terminal according to the second configuration information.

The explanations and beneficial effects of the communication device-related content provided by the twentieth aspect can refer to the method shown in the tenth aspect, which will not be repeated here.

In a twenty-first aspect, a communication device is provided, which includes: a memory for storing programs; at least one processor for executing the computer programs or instructions stored in the memory, so as to perform the above-mentioned first to tenth aspects A method for any of the possible implementations.

In an implementation manner, the apparatus is a terminal device.

In another implementation manner, the apparatus is a chip, a chip system, or a circuit used in a terminal device.

In a twenty-second aspect, the present application provides a processor, configured to execute the methods provided in the foregoing aspects.

For the sending and obtaining/receiving operations involved in the processor, if there is no special description, or if it does not conflict with its actual function or internal logic in the relevant description, it can be understood as the processor's output and reception, input and other operations , can also be understood as the sending and receiving operations performed by the radio frequency circuit and the antenna, which is not limited in this application.

In a twenty-third aspect, a computer-readable storage medium is provided, and the computer-readable medium stores program code for execution by a device, and the program code includes a possible implementation for performing any one of the above-mentioned first to tenth aspects way of way.

In a twenty-fourth aspect, a computer program product containing instructions is provided, and when the computer program product is run on a computer, the computer is made to execute the method in any one of the possible implementation manners of the above first aspect to the tenth aspect.

A twenty-fifth aspect provides a chip, the chip includes a processor and a communication interface, the processor reads the instructions stored in the memory through the communication interface, and executes the method in any one of the possible implementations of the first aspect to the tenth aspect above .

Optionally, as an implementation, the chip further includes a memory, in which computer programs or instructions are stored, and the processor is used to execute the computer programs or instructions stored in the memory, and when the computer programs or instructions are executed, the processor is used to execute A method in any possible implementation manner of the first aspect to the tenth aspect above.

In a twenty-sixth aspect, a transmission mode switching system is provided, including the above relay terminal and remote terminal.

Description of drawings

Fig. 1 shows a schematic diagram of a network architecture.

FIG. 2 shows a schematic diagram of a communication method 200 provided by an embodiment of the present application.

FIG. 3 shows a schematic diagram of another communication method 300 provided by an embodiment of the present application.

FIG. 4 shows a schematic flowchart of another communication method 400 provided by an embodiment of the present application.

FIG. 5 shows a schematic flowchart of another communication method 500 provided by the embodiment of the present application.

FIG. 6 shows a schematic flowchart of another communication method 600 provided by an embodiment of the present application.

FIG. 7 shows a schematic block diagram of a communication device 700 provided by an embodiment of the present application.

FIG. 8 shows a schematic block diagram of another communication device 800 provided by an embodiment of the present application.

FIG. 9 shows a schematic diagram of a chip system 900 provided by an embodiment of the present application.

Detailed ways

The technical solution in this application will be described below with reference to the accompanying drawings.

The technical solution provided by this application can be applied to various communication systems, such as: the fifth generation (5th generation, 5G) or new radio (new radio, NR) system, long term evolution (long term evolution, LTE) system, LTE frequency division Duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD) system, etc. The technical solution provided by this application can also be applied to future communication systems, such as the sixth generation mobile communication system. The technical solution provided by this application can also be applied to device to device (device to device, D2D) communication, vehicle to everything (vehicle-to-everything, V2X) communication, machine to machine (machine to machine, M2M) communication, machine type Communication (machine type communication, MTC), and Internet of things (internet of things, IoT) communication system or other communication systems.

First, briefly introduce the network architecture applicable to this application.

As an example, Fig. 1 shows a schematic diagram of a network architecture.

As shown in FIG. 1 , the network architecture takes a 5G system (the 5 ^th generation system, 5GS) as an example. The network architecture may include three parts, namely a UE part, a data network (data network, DN) part and an operator network part. Wherein, the operator network may include one or more of the following network elements: (wireless) access network ((radio) access network, (R)AN) equipment, user plane function (user plane function, UPF) network element, Authentication server function (authentication server function, AUSF) network element, unified data repository (unified data repository, UDR) network element, access and mobility management function (access and mobility management function, AMF) network element, SMF network element, network opening Function (network exposure function, NEF) network element, network repository function (network repository function, NRF) network element, policy control function (policy control function, PCF) network element, unified data management (unified data management, UDM) network element and an application function (application function, AF) network element. In the above operator network, the part other than the RAN part may be referred to as the core network part. In this application, user equipment, (wireless) access network equipment, UPF network element, AUSF network element, UDR network element, AMF network element, SMF network element, NEF network element, NRF network element, PCF network element, UDM Network elements and AF network elements are referred to as UE, (R)AN equipment, UPF, AUSF, UDR, AMF, SMF, NEF, NRF, PCF, UDM, and AF respectively.

Each network element involved in FIG. 1 is briefly described below.

1. UE

The UE mainly accesses the 5G network through the wireless air interface and obtains services. The UE interacts with the RAN through the air interface, and interacts with the AMF of the core network through non-access stratum signaling (non-access stratum, NAS).

The UE in this embodiment of the present application may also be referred to as a terminal device, user, 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. A UE can be a cellular phone, a smart watch, a wireless data card, a mobile phone, a tablet computer, a personal digital assistant (PDA) computer, a wireless modem, a handheld device, a laptop computer, a machine type communication (MTC) ) terminals, computers with wireless transceiver functions, Internet of Things terminals, virtual reality terminal devices, augmented reality terminal devices, wearable devices, vehicles, terminals in device-to-device (D2D) communication, vehicles ( Terminals in vehicle to everything (V2X) communication, terminals in machine-type communication (MTC), terminals in Internet of Things (IOT), terminals in smart office, terminals in industrial control , terminals in unmanned driving, terminals in remote surgery, terminals in smart grids, terminals in transportation security, terminals in smart cities, terminals in smart homes, terminals in satellite communications (for example, satellite phones or satellite terminal). The UE may also be customer-premises equipment (CPE), telephone, router, network switch, residential gateway (residential gateway, RG), set-top box, fixed mobile convergence product, home network adapter, and Internet access gateway.

The embodiment of the present application does not limit the specific technology and specific equipment form adopted by the UE.

2. (R)AN equipment

The (R)AN device can provide authorized users in a specific area with the function of accessing the communication network. Specifically, it can include wireless network devices in the 3rd generation partnership project (3rd generation partnership project, 3GPP) network, and can also include non-3GPP (non- 3GPP) access point in the network. For the convenience of description, AN equipment is used below.

AN devices may use different wireless access technologies. There are currently two types of wireless access technologies: 3GPP access technologies (for example, wireless access technologies used in third generation (3rd generation, 3G), fourth generation (4th generation, 4G) or 5G systems) and non- 3GPP (non-3GPP) access technology. The 3GPP access technology refers to the access technology that complies with the 3GPP standard specifications. For example, the access network equipment in the 5G system is called the next generation Node Base station (gNB) or RAN equipment. Non-3GPP access technologies may include air interface technology represented by access point (AP) in wireless fidelity (WiFi), worldwide interoperability for microwave access (WiMAX), code Multiple access (code division multiple access, CDMA), etc. The AN device may allow non-3GPP technology interconnection and intercommunication between the terminal device and the 3GPP core network.

The AN device can be responsible for functions such as wireless resource management, quality of service (QoS) management, data compression and encryption on the air interface side. The AN equipment provides access services for the terminal equipment, and then completes the forwarding of control signals and user data between the terminal equipment and the core network.

AN equipment may include, but not limited to, for example: a macro base station, a micro base station (also called a small station), a radio network controller (radio network controller, RNC), a node B (Node B, NB), a base station controller (base station controller) , BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved NodeB, or home Node B, HNB), baseband unit (baseband unit, BBU), AP in WiFi system, WiMAX in (base station, BS), wireless relay node, wireless backhaul node, transmission point (transmission point, TP) or sending and receiving point (transmission and reception point, TRP), etc., can also be used in 5G (eg, NR) system gNB or transmission point (TRP or TP), one or a group (including multiple antenna panels) antenna panels of the base station in the 5G system, or it can also be a network node that constitutes a gNB or transmission point, such as a distributed unit ( distributed unit, DU), or the base station in the next-generation communication 6G system, etc.

The embodiment of the present application does not limit the specific technology and specific device form adopted by the AN device.

3. UPF

UPF mainly provides user plane functions such as forwarding and processing of user packets, connection with DN, session anchor point, and quality of service (quality of service, QoS) policy enforcement. For example, the UPF can receive user plane data from the DN, and send the user plane data to the terminal device through the AN device. UPF can also receive user plane data from terminal equipment through AN equipment and forward it to DN.

4. DN

The DN is mainly used in the operator's network that provides data services for the UE. For example, the Internet (Internet), a third-party service network, an IP multimedia service (IP multi-media service, IMS) network, and the like.

5. AUSF

AUSF is mainly used for user authentication and so on.

6. UDR

UDR mainly provides storage capabilities for contract data, policy data, and capability opening-related data.

7. AMF

AMF is mainly used for functions such as access control, mobility management, attachment and detachment.

8. SMF

SMF is mainly responsible for session management (such as session establishment, modification, release), Internet Protocol (internet protocol, IP) address allocation and management, UPF selection and control, etc.

9. NEF

NEF is mainly used to securely open services and capabilities provided by 3GPP network functions to the outside.

10. NRF

NRF is mainly used to store description information of network functional entities and the services they provide.

11. PCF

PCF is mainly used to guide a unified policy framework for network behavior, and provide policy rule information for control plane network elements (such as AMF, SMF, etc.).

12. UDM

UDM is mainly used for UE subscription data management, including storage and management of UE ID, UE access authorization, etc.

13. AF

The AF is mainly used to provide services to the 3GPP network, such as interacting with the PCF for policy control.

In the network architecture shown in FIG. 1 , various network elements can communicate through interfaces. The interface between network elements may be a point-to-point interface or a service interface, which is not limited in this application.

It should be understood that the network architecture shown above is only an example, and the network architecture applicable to the embodiment of the present application is not limited thereto, and any network architecture capable of realizing the functions of the foregoing network elements is applicable to the embodiment of the present application.

It should also be understood that the functions or network elements such as AMF, SMF, UPF, PCF, UDM, AUSF, UDR, NEF, NRF, and AF shown in FIG. 1 can be understood as network elements for implementing different functions. Need to be combined into network slices. These network elements can be independent devices, or can be integrated in the same device to achieve different functions, or can be network elements in hardware devices, or software functions running on dedicated hardware, or platforms (for example, cloud The virtualization function instantiated on the platform), this application does not limit the specific form of the above network elements.

It should also be understood that the above names are only defined for the convenience of distinguishing different functions, and shall not constitute any limitation to the present application. This application does not exclude the possibility of adopting other names in the 6G network and other networks in the future. For example, in a 6G network, some or all of the above network elements may use the terms in 5G, or may use other names.

To facilitate understanding of the embodiments of the present application, terms or technologies involved in the present application are briefly described.

1. PC5 communication: communication is based on the PC5 interface between UEs, that is, the direct link between UEs is used for communication without passing through the operator's network (for example, a base station). Wherein, the direct link may be called, for example, a PC5 link (PC5 link) or a PC5 connection or a layer-2 link (Layer-2 link).

2. Discontinuous Reception (DRX): When the UE is in the idle state, the UE receives paging information in DRX mode to reduce power consumption. The position where the paging information appears on the air interface is fixed. In each DRX cycle, the UE listens to the wireless channel only in the paging occasion (Paging Occasion, PO) time slot, reads the paging message, and checks whether there is downlink traffic arriving. The value range of the DRX cycle is: 1.28s, 2.56s, 5.12s or 10.24s. During the UE registration process, the DRX cycle length can be negotiated between the UE and the AMF, and the value delivered to the UE by the AMF shall prevail. The PO can be calculated from the UE identity (5G temporary mobile subscription identity), DRX cycle and the number of POs in the DRX cycle.

3. Extended discontinuous reception (extended DRX, eDRX): further save terminal power consumption, while meeting certain downlink service delay requirements. In each eDRX cycle, there is a paging time window (Paging Time Window, PTW), and the UE only listens to the wireless channel and reads the paging message in the DRX cycle within the PTW. It is in sleep state outside PTW and does not listen to the radio channel. If the 5G core network receives a downlink data packet outside the PTW window, it will buffer the data packet. When the UE enters the PTW time window, it will page the UE, trigger the UE to establish an air interface connection, and then forward the data packet to the UE. During the UE registration process, the eDRX cycle length and PTW length can be negotiated between the UE and the AMF, and the values delivered to the UE by the AMF shall prevail.

4. Mobile initiated connection only (MICO) mode: For scenarios where downlink service delay is not required, MICO can be used to further save terminal power consumption. The UE enters the power saving mode (PSM)/MICO mode, turns off the receiver, no longer receives downlink messages, and the network side cannot actively contact the UE. Only when the UE needs to send uplink data or perform periodic location update, will it actively wake up and execute the uplink business process.

It should be pointed out that the above terms or technologies belong to the prior art and shall not be limited.

It can be understood that the term "and/or" in this article is only an association relationship describing associated objects, which means that there can be three relationships, for example, A and/or B, which can mean: A exists alone, and A and B exist at the same time , there are three cases of B alone. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

The terms involved in this application are briefly described above, and will not be repeated in the following embodiments. The communication method provided by the embodiment of the present application will be described in detail below with reference to the accompanying drawings. The embodiments provided in this application can be applied to the network architecture shown in Figure 1 above, without limitation.

FIG. 2 is a schematic diagram of a communication method 200 provided by an embodiment of the present application. Method 200 may include the following steps.

S201. The relay terminal determines the first PC5 DRX parameter.

Wherein, the first PC5 DRX parameter can be used for PC5 communication between the remote terminal and the relay terminal. Specifically, the first PC5 DRX parameters may include the first PC5 DRX cycle and the first receiving window length.

Wherein, the first PC5 DRX cycle may be the sum of the wake-up time and the sleep time; the first receive window length is used to represent the time length of the wake-up time, and the receive window length may also be called the activation time.

Wherein, the remote terminal can be connected to the network or the target terminal through the relay terminal. A communication connection may be established between the relay terminal and the remote terminal based on the PC5 interface, and the communication connection may be called a PC5 connection, and the communication between the relay terminal and the remote terminal is based on the communication connection, that is, PC5 communication.

In addition, if the remote terminal is connected to the target terminal through the relay terminal, the remote terminal may also be called the source terminal, that is, the source terminal communicates with the target terminal through the relay terminal.

S202. The relay terminal sends first information to the remote terminal.

Correspondingly, the remote terminal receives the first information from the relay terminal.

Wherein, the first information may be used to notify (or indicate) the first PC5 DRX parameter to the remote terminal. Specifically, the first information may be first indication information used to indicate the first PC5 DRX parameter; or, the first information may also be the first PC5 DRX parameter.

Specifically, the first indication information may be a PC5 DRX mode, and the PC5 DRX mode may be used by the remote terminal to determine the first PC5 DRX parameter. In other words, the remote terminal may determine the first PC5 DRX parameter according to the PC5 DRX mode; or, the first indication The information can also be information including the PC5 DRX mode, without limitation.

Optionally, the relay terminal sends the first information to the remote terminal through a PC5 signaling (PC5-Signalling, PC5-S) message, that is, the first information is carried in the PC5-S message. Specifically, the PC5-S message may be a PC5 link establishment request message or a PC5 link modification request message.

S203. The remote terminal receives information from the relay terminal according to the first PC5 DRX parameter.

Wherein, the information from the relay terminal may be signaling (such as PC5 signaling message) or data (for example, service data or downlink data forwarded by the relay terminal, without limitation).

In an example, in step S203, the remote terminal receives information from the relay terminal within the length of the receiving window in the first PC5 DRX cycle.

In another example, in step S203, the remote terminal receives information from the relay terminal during the activation time or wake-up time in the first PC5 DRX cycle. The remote terminal stops receiving information from the relay terminal during the sleep time in the first PC5 DRX cycle. For example, the first PC5 DRX cycle is 10s, the wake-up time includes 1-4s, and the sleep time includes 5-10s.

Using the method provided in the above embodiment, the relay terminal determines the first PC5 DRX parameter, sends the first information to the remote terminal, and notifies the remote terminal of the first PC5 DRX parameter, and the remote terminal receives the first PC5 DRX parameter from the relay terminal according to the first PC5 DRX parameter. Terminal information. In this method, based on the first information, the remote terminal can know the first PC5 DRX parameter used by the relay terminal for PC5 communication, so that the remote terminal performs PC5 communication with the relay terminal according to the first PC5 DRX parameter (communication based on the PC5 interface) ). Further, compared to whether the remote terminal and the relay terminal transmit according to the preset PC5 DRX parameters regardless of whether there is data being transmitted on the PC5 link, using the method provided in the above embodiment, the remote terminal can transmit data based on the relay terminal The first PC5 DRX parameter determined by the data transmission state is used for PC5 communication, which prevents the remote terminal from listening to the wireless channel when there is no data transmission, and greatly reduces the energy consumption of the terminal.

Optionally, in an implementation scenario of the foregoing embodiment, step S201 may be implemented in the following manners.

Way 1: The relay terminal determines the first PC5 DRX parameter 1 according to the DRX parameter of the relay terminal.

Wherein, the DRX parameters of the relay terminal include the DRX cycle of the relay terminal and the paging time of the relay terminal.

Wherein, the paging time of the relay terminal is the time when the relay terminal receives the paging message.

In a possible implementation manner, the relay terminal may determine the first PC5 DRX cycle in the first PC5 DRX parameter 1 according to the DRX cycle of the relay terminal, and determine the first PC5 DRX cycle in the first PC5 DRX parameter 1 according to the paging time of the relay terminal. The length of the first receive window. For example, the first PC5 DRX cycle is equal to the DRX cycle of the relay terminal, and the length of the first receiving window is equal to the time slot length of the paging moment of the relay terminal. For another example, the first PC5 DRX cycle is an integer multiple of the DRX cycle of the relay terminal, and the length of the first receiving window is equal to the time slot length of the paging moment of the relay terminal plus a margin time, and the margin time indicates that the relay terminal Time to process the paging message.

Optionally, after the relay terminal determines the first PC5 DRX parameter 1 according to the DRX parameters of the relay terminal, the method 200 further includes: when the relay terminal enters an idle state and uses the DRX parameters of the relay terminal to receive downlink information, the intermediate The relay terminal sends the first information to the remote terminal.

It should be noted that the relay terminal entering the idle state in this application may be the moment when the relay terminal enters the idle state; Enter the idle state without restriction.

Wherein, using the DRX parameters of the relay terminal to receive downlink information can be understood as: the relay terminal receives downlink data or paging messages according to the paging time within the DRX cycle of the relay terminal, without limitation.

Method 2: The relay terminal determines the first PC5 DRX parameter 2 according to the eDRX parameter of the relay terminal.

Wherein, the eDRX parameters of the relay terminal can be used for the relay terminal to receive data from the network device, and specifically can include the eDRX cycle and the eDRX paging time window (Paging Time Window, PTW) length.

In a possible implementation manner, the relay terminal determines the first PC5 DRX cycle in the first PC5 DRX parameter 2 according to the eDRX cycle of the relay terminal, and the relay terminal determines the first PC5 DRX parameter 2 in the first PC5 DRX parameter 2 according to the PTW length of the relay terminal. The first receive window length of . For example, the first PC5 DRX cycle is equal to the eDRX cycle of the relay terminal, and the length of the first receiving window is equal to the PTW length of the relay terminal, without limitation. For another example, the first PC5 DRX cycle is an integer multiple of the eDRX cycle of the relay terminal, and the length of the first receiving window is equal to the PTW length of the relay terminal plus a margin time, and the margin time represents the time for the relay terminal to process the paging message time.

Optionally, after the relay terminal determines the first PC5 DRX parameter 2 according to the eDRX parameters of the relay terminal, the method 200 further includes: when the relay terminal enters the idle state and uses the eDRX parameters to receive downlink information, the relay terminal sends a remote The terminal sends first information.

The use of eDRX parameters of the relay terminal to receive downlink information can be understood as: the relay terminal receives downlink data or paging messages according to the length of the PTW within the eDRX cycle of the relay terminal, without limitation.

Mode 3: The relay terminal determines the first PC5 DRX parameter 3 according to the keep-alive timing period.

Wherein, the keep-alive timing period is a period for the relay terminal to send the keep-alive signaling, and the keep-alive timing period is used to maintain the survival of the link between the relay terminal and the remote terminal PC5.

In a possible implementation manner, the relay terminal determines the first PC5 DRX cycle in the first PC5 DRX parameter 3 according to the keep-alive timing cycle of the relay terminal, and the relay terminal determines the second receiving window in the second PC5 DRX parameter 3 length determines the first receive window length. For example, the first PC5 DRX cycle is equal to the keep-alive timing period or an integer multiple of the keep-alive timing period, without limitation. For another example, the length of the first receiving window is the same as the length of the second receiving window.

Optionally, after the relay terminal determines the first PC5 DRX parameter 3 according to the keep-alive timing period, the method 200 further includes: when the relay terminal enters the MICO mode, the relay terminal sends the first information to the remote terminal.

It should be pointed out that the relay terminal entering the MICO mode in this application may be the moment when entering the MICO mode; it may also be any time within a period of time after entering the MICO mode, that is, it can be understood that the relay terminal has entered the MICO mode, No restrictions.

Mode 4: The relay terminal determines the first PC5 DRX parameter 4 according to the service characteristics of the remote terminal.

Wherein, the service characteristic may be the service arrival period or the service arrival duration, and the service arrival duration may be used to indicate the duration of the service arrival within the service arrival period; or, the service characteristic may also be the delay tolerance value of the remote terminal for the downlink service (delay tolerate value), the delay tolerance value can be understood as the maximum delay for downlink service transmission, which is not limited.

In a possible implementation manner, the relay terminal determines the first PC5 DRX cycle in the first PC5 DRX parameter 4 according to the service arrival cycle, and determines the first receiving window length in the first PC5 DRX parameter 4 according to the service arrival time. For example, the first PC5 DRX cycle is equal to the service arrival cycle, and the length of the first receiving window is equal to the service arrival time. For another example, the first PC5 DRX cycle is equal to an integer multiple of the service arrival cycle, and the length of the first receiving window is equal to the service arrival duration plus a margin time, which represents the time for the relay terminal to process service data and is not limited.

Way 5: The relay terminal determines the first PC5 DRX parameter 5 according to the second PC5 DRX parameter.

Wherein, the second PC5 DRX parameter is used for PC5 communication between the target terminal and the relay terminal.

Wherein, the second PC5 DRX parameter may include a second PC5 DRX cycle and a second receiving window length.

A possible implementation manner, the relay terminal determines the first PC5 DRX cycle in the first PC5 DRX parameter 5 according to the second PC5 DRX cycle, and determines the first receiving window in the first PC5 DRX parameter 5 according to the second receiving window length length. For example, the first PC5 DRX cycle is equal to the second PC5 DRX cycle, and the length of the first receiving window is equal to the length of the second receiving window. For another example, the first PC5 DRX cycle is equal to an integer multiple of the service arrival cycle, and the length of the first receiving window is equal to the service arrival duration plus a margin time, which represents the time for the relay terminal to process service data and is not limited.

Optionally, after the relay terminal determines the first PC5 DRX parameter 5 according to the second PC5 DRX parameter, the method 200 further includes: when there is no data transmission between the relay terminal and the target terminal, and using the second PC5 DRX parameter to receive When receiving the information of the target terminal, the relay terminal sends the first information to the remote terminal.

It should be understood that no data transmission between the relay terminal and the target terminal may mean that there is no data transmission between the relay terminal and the target terminal within a period of time, which is not limited.

Wherein, using the first PC5 DRX parameter 5 to receive the information of the target terminal may be that the relay terminal receives the data or signaling sent by the target terminal according to the first receiving window length within the first PC5 DRX cycle, without limitation.

It should be pointed out that the above multiple implementation manners may be combined with each other, or may be independent of each other, without limitation.

In addition, the above multiple implementations of determining the first PC5 DRX parameters may correspond to different PC5 DRX modes, as shown in Table 1 for details.

Table 1 Correspondence between the first PC5 DRX parameters and PC5 DRX modes

S201的实现方式Implementation of S201	PC5 DRX模式PC5 DRX mode	第一PC5 DRX参数First PC5 DRX parameters
方式一method one	PC5 DRX模式1 PC5 DRX Mode 1	第一PC5 DRX参数1First PC5 DRX parameter 1
方式二way two	PC5 DRX模式2PC5 DRX Mode 2	第一PC5 DRX参数2First PC5 DRX parameter 2

方式三way three	PC5 DRX模式3PC5 DRX mode 3	第一PC5 DRX参数3First PC5 DRX parameter 3
方式四way four	PC5 DRX模式4PC5 DRX mode 4	第一PC5 DRX参数4First PC5 DRX parameter 4
方式五way five	PC5 DRX模式5PC5 DRX Mode 5	第一PC5 DRX参数5First PC5 DRX parameter 5

In the above implementation scenario, the relay terminal can determine different first PC5 DRX parameters according to different states, so that the remote terminal can use different first PC5 DRX parameters for PC5 communication, and realizes the refinement of the remote terminal under different states energy saving. Furthermore, compared to whether the PC5 link has data being transmitted or not, the remote terminal and the relay terminal both transmit according to a specific first PC5 DRX parameter, using the method provided in the above embodiment avoids when there is no data transmission. waste of resources, thereby realizing the optimization of the first PC5 DRX parameters and saving energy for the remote terminal.

Optionally, in an implementation scenario of the foregoing embodiment, the method 200 further includes: the relay terminal sends the correspondence between the first PC5 DRX parameter and the PC5 DRX mode to the remote terminal.

Wherein, the corresponding relationship between the first PC5 DRX parameter and the PC5 DRX mode may be a one-to-one correspondence. For example, the corresponding relationship is the corresponding relationship between the PC5 DRX mode and the first PC5 DRX parameter in Table 1, including: PC5 DRX mode 1 corresponds to the first PC5 DRX parameter 1, PC5 DRX mode 2 corresponds to the first PC5 DRX parameter 2 Correspond, and so on.

Wherein, the corresponding relationship between the first PC5 DRX parameter and the PC5 DRX mode is used for the remote terminal to determine the first PC5 DRX parameter according to the PC5 DRX mode.

Further, the remote terminal can obtain the first PC5 DRX parameter according to the corresponding relationship and the first indication information.

Taking the corresponding relationship between the first PC5 DRX parameter and the PC5 DRX mode as the corresponding relationship in the above Table 1 as an example, when the PC5 DRX mode received by the remote terminal is PC5 DRX mode 1, the remote terminal obtains the first PC5 DRX mode according to the corresponding relationship. DRX parameter1.

FIG. 3 is a schematic flowchart of a communication method 300 provided by an embodiment of the present application. The method 300 may include the following steps.

S301. The remote terminal determines whether there is a data receiving requirement.

Wherein, the data receiving requirement may be understood as a requirement for receiving downlink data.

Optionally, the remote terminal may determine whether there is a data reception requirement according to the service type or service requirement transmitted through the relay terminal, for example, some services such as a location report service do not have a data reception requirement. For another example, certain services such as the data reporting service of IoT devices only require uplink data transmission.

S302. The remote terminal sends the first demand indication information or the second demand indication information to the relay terminal.

Wherein, the first demand indication information is used to indicate that the remote terminal does not have a data reception demand, and the second demand indication information is used to indicate that the remote terminal has a data reception demand.

It should be understood that, when the remote terminal does not have a need for data reception, the remote terminal sends the first demand indication information to the relay terminal or does not send the second demand indication information; when the remote terminal has a data reception demand, the remote terminal sends the relay terminal The relay terminal sends the second demand indication information or does not send the first demand indication information. Further, after the remote terminal determines whether there is a demand for data reception, it notifies the relay terminal, and the method flow shown in FIG. 3 also includes:

S303. The relay terminal learns that none of the remote terminals corresponding to the relay terminal has a data receiving requirement.

Wherein, the remote terminal corresponding to the relay terminal includes one or more terminals connected to the network through the relay terminal, as shown in UE1 and UE2 in FIG. 3 , in other words, one or more remote terminals access the network through the relay terminal. It should be understood that the multiple remote terminals are at least two remote terminals.

It should be understood that when the remote terminal corresponding to the relay terminal is a terminal that accesses the network through the relay terminal, if the remote terminal does not have a data receiving requirement, the relay terminal learns that none of the remote terminals corresponding to the relay terminal exists Data reception requirements.

It should also be understood that when the remote terminal corresponding to the relay terminal is a plurality of terminals accessing the network through the relay terminal, that is, two or more terminals, only when all remote terminals do not have data receiving requirements, then The relay terminal learns that none of the remote terminals corresponding to the relay terminal has a data receiving requirement. In other words, if one of the two or more terminals accessing the network through the relay terminal has a data reception requirement, the relay terminal cannot know that none of the remote terminals corresponding to the relay terminal has a data reception requirement.

Optionally, the relay terminal may determine whether there is a data receiving requirement according to the service type or service requirement of the remote terminal, for example, some services such as a location reporting service do not have a data receiving requirement.

S304, the relay terminal requests the network device to enter the MICO mode.

Specifically, the relay terminal may send a request message to the network device to request to enter the MICO mode, or may send a message in the prior art, for example, a registration request message. The request message may carry information for requesting to enter the MICO mode, for example, MICO mode indication information, which is not limited.

Wherein, the network device may be an AMF network element, or may be a RAN device.

It should be understood that the relay terminal may execute step 304 only when the relay terminal knows that all remote terminals corresponding to the relay terminal do not have data receiving requirements.

S305. The relay terminal receives the response message from the network device.

The response message may be used to respond to the request in S302, the response message is used to trigger the relay terminal to enter the MICO mode, and the response message may include indication information for instructing the relay terminal to enter the MICO mode. Specifically, the response message may be an existing message, such as a registration request response message, or a new message, without limitation.

It should be noted that the response message may be replaced by other messages that have a function of instructing the relay terminal to enter the MICO mode, such as a notification message, without limitation.

S306, the relay terminal enters the MICO mode according to the response message.

It should be understood that, after receiving the response message from the remote terminal, the relay terminal enters the MICO mode.

Using the method provided in the above embodiment, the remote terminal determines whether there is a need for data reception and then notifies the relay terminal, and the relay terminal sends a request to the network device to enter the MICO mode after learning that none of the remote terminals corresponding to the relay terminal has a data reception need request message, the relay terminal enters the MICO mode after receiving the response from the network device. In this method, the relay terminal requests to enter the MICO mode after learning that none of its corresponding remote terminals has any data reception requirements, which avoids the UE receiving and listening in a large resource pool/frequency bandwidth when there is no data transmission, thereby effectively to save energy. Further, the relay terminal determines whether the relay terminal requests to enter the MICO mode according to the downlink data reception requirement of the remote terminal, so as to realize energy saving between the relay terminal and the network communication as much as possible.

Optionally, in another implementation scenario of the above embodiment, step S303 includes: the relay terminal learns that none of the remote terminals corresponding to the relay terminal has data according to the first demand indication information and/or the second demand indication information Receive demand.

It should be understood that, when the relay terminal receives the first demand indication information sent by all the remote terminals, the relay terminal learns that none of the remote terminals corresponding to the relay terminal has a data reception demand. In other words, when the relay terminal receives at least one piece of first demand indication information and one piece of second demand indication information, the relay terminal cannot know that none of the remote terminals corresponding to the relay terminal has a data reception demand. For example, the remote terminals corresponding to the relay terminal include UE1 and UE2, and both UE1 and UE2 send the first demand indication information to the relay terminal, and the relay terminal learns that none of the remote terminals corresponding to the relay terminal has a data reception requirement. For another example, the remote terminals corresponding to the relay terminal include UE1 and UE2, UE1 sends the first demand indication information to the relay terminal, and UE2 sends the second demand indication information to the relay terminal, then the relay terminal cannot know the There is no need for data reception at any remote terminal. It should be understood that the foregoing is only an exemplary description, not a limitation.

It should also be understood that if the relay terminal does not receive the second demand indication information from all the remote terminals corresponding to the relay terminal within the preset time period, the relay terminal learns that none of the remote terminals corresponding to the relay terminal has data reception. need. In other words, as long as the relay terminal receives a piece of second demand indication information, the relay terminal cannot know that none of the remote terminals corresponding to the relay terminal has a data receiving demand.

Based on the above solution, the relay terminal requests to enter the MICO mode after learning that none of its corresponding remote terminals has data reception requirements, which avoids the UE receiving and listening in a large resource pool/frequency bandwidth when there is no data transmission, thereby effectively To save energy. Further, the relay terminal determines whether the relay terminal requests to enter the MICO mode according to the downlink data reception requirement of the remote terminal, so as to realize energy saving between the relay terminal and the network communication.

FIG. 4 is a schematic flowchart of a communication method 400 provided by an embodiment of the present application. The method 400 may include the following steps.

Optionally, S401. The remote terminal determines DRX parameters of the remote terminal.

Wherein, the DRX parameters of the remote terminal may include a DRX cycle of the remote terminal and a paging time of the remote terminal.

It should be understood that the remote terminal may also determine the DRX parameters of the remote terminal in a manner in the prior art, without limitation.

S402. The remote terminal sends the DRX parameters of the remote terminal to the relay terminal.

Correspondingly, the relay terminal receives the DRX parameters of the remote terminal corresponding to the relay terminal.

Wherein, the remote terminal corresponding to the relay terminal includes one or more terminals connected to the network through the relay terminal, as shown in UE1 and UE2 in FIG. 4 , in other words, one or more remote terminals access the network through the relay terminal.

It should be understood that the multiple remote terminals in this application are at least two remote terminals.

It should be understood that the relay terminal receiving the DRX parameter of the remote terminal corresponding to the relay terminal may be receiving the DRX parameter of a remote terminal accessing the network through the relay terminal; the relay terminal receiving the DRX parameter of the remote terminal corresponding to the relay terminal The parameter may also be to receive DRX parameters of at least one remote terminal among multiple remote terminals accessing the network through the relay terminal. In other words, the relay terminal may receive DRX parameters of some remote terminals corresponding to the relay terminal, or may receive DRX parameters of all remote terminals corresponding to the successor terminal.

S403, the relay terminal determines DRX parameters of the relay terminal.

Specifically, when the relay terminal receives the DRX parameters of the remote terminal corresponding to the relay terminal, the relay terminal in S403 may determine the DRX parameters of the relay terminal according to the DRX parameters of the remote terminal.

Specifically, in view of the different numbers of remote terminals corresponding to the relay terminal, S403 may adopt multiple possible implementation methods, specifically as follows:

In the first case, the relay terminal corresponds to only one remote terminal, in other words, only one remote terminal is connected to the network through the relay terminal.

When the relay terminal receives the DRX parameter of the remote terminal, in S403, the relay terminal determines the DRX parameter of the relay terminal according to the DRX parameter of the remote terminal. For example, the DRX cycle of the relay terminal is equal to the DRX cycle of the remote terminal, and the paging time of the relay terminal is the same as the paging time of the remote terminal.

In the second case, multiple remote terminals corresponding to the relay terminal, in other words, multiple remote terminals are connected to the network through the relay terminal.

When the relay terminal receives the DRX parameter of at least one remote terminal among the plurality of remote terminals, the relay terminal determines the DRX parameter of the relay terminal according to the DRX parameter of the at least one remote terminal. For example, the DRX cycle of the relay terminal is the minimum value among the DRX cycles of the at least one remote terminal, and the paging time of the relay terminal includes the paging time of the at least one remote terminal. It should be understood that the paging time of the relay terminal is A collection of paging occasions for multiple remote terminals. For another example, when the relay terminal receives the DRX parameter of a remote terminal among multiple remote terminals, the relay terminal determines the DRX parameter of the relay terminal according to the DRX parameter of the one remote terminal.

It should be noted that the method 400 uses DRX parameters as an example for description, and the DRX parameters in the method 400 can be replaced by eDRX parameters. Wherein, the eDRX parameters of the remote terminal may include the eDRX cycle of the remote terminal and the PTW length of the eDRX.

In the embodiment in which the DRX parameters in method 400 can all be replaced with eDRX parameters, in view of the different numbers of remote terminals corresponding to the relay terminal, S403 can adopt the following multiple possible implementation methods:

In the first case, the relay terminal only corresponds to one remote terminal.

When the relay terminal receives the eDRX parameter of the remote terminal, in S403, the relay terminal determines the eDRX parameter of the relay terminal according to the eDRX parameter of the remote terminal. For example, the eDRX cycle of the relay terminal is equal to the eDRX cycle of the remote terminal, and the length of the paging time window of the relay terminal is the same as that of the remote terminal.

When the relay terminal receives the eDRX parameter of at least one remote terminal among the plurality of remote terminals, in S403 the relay terminal determines the eDRX parameter of the relay terminal according to the DRX parameter of the at least one remote terminal. For example, the eDRX cycle of the relay terminal is the minimum value among the eDRX cycles of the at least one remote terminal, and the length of the paging time window of the relay terminal includes the length of the paging time window of the at least one remote terminal. It should be understood that the The length of the paging time window is the sum of the lengths of the paging time windows of multiple remote terminals. For another example, when the relay terminal receives the eDRX parameter of a remote terminal among multiple remote terminals, the relay terminal determines the eDRX parameter of the relay terminal according to the eDRX parameter of the one remote terminal.

It should be noted that, the foregoing description is only an example, and there is no limitation on determining the DRX parameters of the relay terminal or the eDRX parameters of the relay terminal by the relay terminal.

Based on the above solution, the relay terminal can determine the DRX parameters or eDRX parameters of the relay terminal by knowing the downlink transmission delay of its corresponding remote terminal, so as to avoid the UE still listening to the large resource pool/frequency bandwidth when there is no data transmission. wireless channel, thereby effectively saving energy. Further, the relay terminal realizes energy saving between the relay terminal and the network communication while considering the downlink transmission delay/downlink data reception requirement of the remote terminal.

FIG. 5 is a schematic flowchart of a communication method 500 provided by an embodiment of the present application. The method 500 may include the following steps.

S501. The relay terminal receives downlink data from the remote terminal.

Wherein, the remote terminal is a terminal connected to a network device or a target terminal through a relay terminal.

It should be understood that the relay terminal receives downlink data from the network device or the remote terminal of the target terminal.

Optionally, the relay terminal further determines that the downlink data needs to be transmitted through the PC5 link between the remote terminal and the relay terminal.

It should be understood that the remote terminal is in the first mode.

Among them, the first mode can be used to represent (or indicate) that only the function of receiving PC5 interface signaling is enabled or the function of receiving PC5 interface data is not enabled on the PC5 communication connection between the remote terminal and the relay terminal, or it can be used to indicate that the remote terminal and the relay terminal are connected to each other. The PC5 communication connection of the relay terminal does not listen to the wireless channel. In other words, the communication of the remote terminal with other relay terminals may not be in the first mode. Wherein, the PC5 interface signaling indicates a signaling message transmitted through the PC5 interface. The PC5 interface data represents service data transmitted through the PC5 interface.

It should be understood that only enabling the function of receiving PC5 interface signaling may refer to being in the mode of receiving PC5 interface signaling, or being in the state of receiving PC5 interface signaling, or may refer to being able to only receive PC5 interface signaling, or It refers to being in the idle state of the PC5 interface.

S502. The relay terminal sends third information to the remote terminal.

Wherein, the third information may be used to notify the remote terminal that there is downlink data, that is, notify the remote terminal that there is downlink data to be received.

Wherein, the third information may be indication information instructing the remote terminal to establish a user plane connection, or may be indication information instructing the remote terminal to switch from the first mode to the second mode.

Optionally, the third information may be sent through a PC5 link modification message.

It should be understood that the user plane connection is used to transmit the downlink data.

It should be understood that the second mode is used to represent the function of receiving PC5 interface data on the PC5 communication connection between the remote terminal and the relay terminal, or to indicate that the remote terminal and the relay terminal are listening to the wireless channel on the PC5 communication connection. In other words, the communication of the remote terminal with other relay terminals may not be in the first mode.

It should be understood that enabling the function of receiving PC5 interface data may refer to being in a mode or state of receiving PC5 interface data, or may refer to being in a PC5 interface connection state.

S503. The remote terminal establishes or restores the user plane connection according to the third information, and switches from the first mode to the second mode.

After receiving the third information, the remote terminal knows that there is downlink data, establishes a user plane connection, and exits the first mode. In other words, the remote terminal switches from the first mode to the second mode, and prepares to receive downlink data.

Optionally, in another implementation scenario of the foregoing embodiment, the method 500 further includes: S504, the relay terminal learns that the remote terminal is in the first mode.

Specifically, for the relay terminal to learn that the remote terminal is in the first mode, the following methods may be adopted.

In a first manner, the relay terminal receives the first mode information from the remote terminal, and the relay terminal learns that the remote terminal is in the first mode according to the first mode information.

Specifically, if the remote terminal has no data transmission within the preset time period, the remote terminal enters the first mode. When the remote terminal enters the first mode, the remote terminal sends the first mode information to the relay terminal. The first mode information It is used to represent (or notify) that the remote terminal is in the first mode.

Wherein, the first mode information may be status information of the remote terminal, which is not limited.

In a second manner, the relay terminal sends fourth information for triggering the remote terminal to enter the first mode to the remote terminal.

Specifically, if the relay terminal does not receive the downlink data from the remote terminal within a preset period of time, the relay terminal sends fourth information to the remote terminal, the fourth information is used to trigger the remote terminal to enter the first mode, and the remote terminal According to the fourth information, enter the first mode.

Wherein, the second information may be indication information instructing the remote terminal to enter the first mode, or notification information notifying the remote terminal to enter the first mode.

It should be understood that the fact that the relay terminal does not receive the downlink data from the remote terminal may mean that the remote terminal does not transmit data, which is not limited.

Optionally, if the remote terminal is connected to the target terminal through the relay terminal, the remote terminal may also be called the source terminal. The source terminal communicates with the target terminal through the relay terminal.

Optionally, in another implementation scenario of the foregoing embodiment, the method 500 further includes: S505, the relay terminal stores the first mode information of the remote terminal.

Wherein, the first mode information is used to indicate (or notify) that the remote terminal is in the first mode.

Optionally, the relay terminal stores the first mode information in the context of the PC5 link between the remote terminal and the relay terminal.

Optionally, in another implementation scenario of the foregoing embodiment, the method 500 further includes: S506, the relay end stores the downlink data of the remote terminal.

Wherein, the relay terminal may store the downlink data according to the first mode information.

It should be understood that if the relay terminal confirms that the remote terminal is in the first mode, the relay terminal stores the downlink data from the remote terminal of the network device or the target terminal, and if the remote terminal is not in the first mode, the relay terminal No need to store, just send the downlink data directly to the remote terminal.

Optionally, in another implementation scenario of the foregoing embodiment, the method 500 further includes: S507, the remote terminal sends the first configuration information to the relay terminal.

Wherein, the first configuration information is used for the relay terminal to send downlink data.

Specifically, the first configuration information includes a bandwidth part BWP and/or an unlicensed spectrum.

Optionally, in another implementation scenario of the foregoing embodiment, the method 500 further includes: S508, the relay terminal sends downlink data to the remote terminal.

Optionally, the relay terminal sends downlink data to the remote terminal according to the first configuration information.

In a first possible manner, when the first configuration information includes the BWP, the relay terminal sends downlink data to the remote terminal on the BWP.

In a second possible manner, when the first configuration information includes an unlicensed spectrum, the relay terminal sends downlink data to the remote terminal according to the unlicensed spectrum.

Based on the above solution, when the remote terminal has no data transmission, the remote terminal only receives PC5 signaling, and when the remote terminal has data transmission, the remote terminal enables the function of receiving PC5 interface data, avoiding the problem caused by still listening to frequency resources related to data transmission energy waste, thus effectively saving energy. Further, the relay terminal realizes energy saving between the relay terminal and the network communication while considering the downlink transmission delay/downlink data reception requirement of the remote terminal.

FIG. 6 is a schematic flowchart of a communication method 600 provided by an embodiment of the present application. The method 600 may include the following steps.

S601. The remote terminal determines that there is uplink data.

Wherein, the remote terminal is a terminal connected to a network device or a target terminal through the relay terminal.

It should be understood that the determination by the remote terminal that there is uplink data may be that the remote terminal receives the uplink data from the application layer, which is not limited.

Optionally, the remote terminal further determines that the uplink data needs to be transmitted through the PC5 link between the remote terminal and the relay terminal.

S602. The remote terminal sends fifth information to the relay terminal.

It should be understood that the relay terminal is in the first mode.

Among them, the first mode is used to represent (or indicate) that only the function of receiving PC5 interface signaling is enabled or the function of receiving PC5 interface data is not enabled on the PC5 communication connection between the remote terminal and the relay terminal. The communication of the terminal may not be in this first mode.

It should be understood that only enabling the function of receiving PC5 interface signaling may refer to being in the mode or state of receiving PC5 interface signaling, may also refer to only receiving PC5 interface signaling, or may refer to being in the PC5 interface idle state .

Wherein, the fifth information is used to notify the relay terminal that there is uplink data.

Wherein, the fifth information may be indication information instructing the relay terminal to establish a user plane connection, or may be indication information instructing the relay terminal to switch from the first mode to the second mode.

Optionally, the fifth information may be sent through a PC5 link modification message.

It should be understood that the user plane connection is used to transmit the uplink data.

It should be understood that the second mode is used to represent the function of receiving PC5 interface data on the PC5 communication connection between the remote terminal and the relay terminal. In other words, the communication between the remote terminal and other relay terminals may not be in the first mode.

S603. The relay terminal establishes or restores the user plane connection according to the fifth information, and switches from the first mode to the second mode.

After receiving the fifth information, the relay terminal knows that there is uplink data, establishes a user plane connection, and exits the first mode. In other words, the relay terminal switches from the first mode to the second mode, and starts to prepare to receive uplink data.

Optionally, in another implementation scenario of the foregoing embodiment, the method 600 further includes: S604, the remote terminal learns that the relay terminal is in the first mode.

Specifically, the remote terminal may use the following methods to learn that the relay terminal is in the first mode.

In the first manner, the remote terminal receives the second mode information from the relay terminal, and the remote terminal learns that the relay terminal is in the first mode according to the second mode information.

Specifically, if the relay terminal has no uplink data transmission from the remote terminal within the preset time period, the relay terminal enters the first mode, and when the relay terminal enters the first mode, the relay terminal sends the second mode information to the remote terminal , the second mode information is used to indicate (or notify) that the relay terminal is in the first mode.

Wherein, the second mode information may be status information of the relay terminal, which is not limited.

In a second manner, the remote terminal sends sixth information for triggering the relay terminal to enter the first mode to the relay terminal.

Specifically, if the remote terminal does not transmit uplink data within a preset period of time, the remote terminal sends sixth information to the relay terminal, the sixth information is used to trigger the relay terminal to enter the first mode, and the relay terminal Six information, enter the first mode.

It should be understood that the fact that the remote terminal has no uplink data transmission may mean that the remote terminal has no data transmission, which is not limited.

Optionally, in another implementation scenario of the foregoing embodiment, the method 600 further includes: S605, the remote terminal stores the second mode information of the relay terminal.

Wherein, the second mode information is used to indicate (or notify) that the relay terminal is in the first mode.

Optionally, the remote terminal stores the second mode information in the context of the PC5 link between the remote terminal and the relay terminal.

Optionally, in another implementation scenario of the foregoing embodiment, the method 600 further includes: S606, the remote terminal stores uplink data.

Wherein, the remote terminal may store uplink data according to the second mode information.

It should be understood that if the remote terminal confirms that the relay terminal is in the first mode, the remote terminal stores the uplink data; if the relay terminal is not in the first mode, the remote terminal does not need to store, and directly sends the uplink data to the relay terminal. data.

Optionally, in another implementation scenario of the foregoing embodiment, the method 600 further includes: S607, the relay terminal sends the second configuration information to the remote terminal.

Wherein, the second configuration information is used for the remote terminal to send uplink data.

Wherein, the second configuration information includes the bandwidth part BWP and/or the unlicensed spectrum.

Optionally, in another implementation scenario of the foregoing embodiment, the method 600 further includes: S608, the remote terminal sends uplink data to the relay terminal.

Optionally, the remote terminal sends uplink data to the relay terminal according to the second configuration information.

In a first possible manner, when the second configuration information includes the BWP, the remote terminal sends uplink data to the relay terminal on the BWP.

In a second possible manner, when the second configuration information includes an unlicensed spectrum, the remote terminal sends uplink data to the relay terminal according to the unlicensed spectrum.

Correspondingly, the relay terminal receives the uplink data from the remote terminal, and further sends it to the network device or the target terminal.

Based on the above solution, when the remote terminal has no data transmission, the relay terminal only receives PC5 signaling, and when the remote terminal has data transmission, the relay terminal enables the function of receiving PC5 interface data, avoiding still listening to frequency resources related to data transmission The resulting energy waste, so as to effectively save energy. Further, the relay terminal realizes energy saving between the relay terminal and the network communication as much as possible while considering the downlink transmission delay/downlink data reception requirement of the remote terminal.

It can be understood that the examples in FIG. 4 to FIG. 6 in the embodiment of the present application are only for the convenience of those skilled in the art to understand the embodiment of the present application, and are not intended to limit the embodiment of the present application to the illustrated specific scenarios. Those skilled in the art can obviously make various equivalent modifications or changes according to the examples in FIG. 4 to FIG. 6 , and such modifications or changes also fall within the scope of the embodiments of the present application.

It can also be understood that some optional features in the embodiments of the present application may not depend on other features in some scenarios, or may be combined with other features in some scenarios, which is not limited.

It can also be understood that the solutions in the various embodiments of the present application can be used in a reasonable combination, and explanations or descriptions of various terms appearing in the embodiments can be referred to or interpreted in each embodiment, which is not limited.

It can also be understood that the sizes of the various numbers in the embodiments of the present application do not mean the order of execution, but are only for convenience of description, and should not constitute any limitation on the implementation process of the embodiments of the present application.

It can also be understood that some message names are involved in each embodiment of the present application, such as path switching requirement message or path switching request message, etc. It should be understood that the naming does not limit the scope of protection of the embodiments of the present application.

It can also be understood that, in the above method embodiments, the methods and operations implemented by the terminal device can also be implemented by components (such as chips or circuits) that can be implemented by the terminal device; in addition, the methods and operations implemented by the network device can also be implemented by It may be implemented by components (such as chips or circuits) that may be used in network equipment, and is not limited.

Corresponding to the methods provided in the foregoing method embodiments, the embodiments of the present application further provide corresponding devices, and the device includes corresponding modules for executing the foregoing method embodiments. The module can be software, or hardware, or a combination of software and hardware. It can be understood that the technical features described in the above method embodiments are also applicable to the following device embodiments.

Fig. 7 is a schematic block diagram of a communication device provided by an embodiment of the present application. The apparatus 700 includes a transceiver unit 710, and the transceiver unit 710 can be used to implement a corresponding communication function. The transceiver unit 710 may also be called a communication interface or a communication unit.

Optionally, the apparatus 700 may further include a processing unit 720, and the processing unit 720 may be used for data processing.

Optionally, the device 700 further includes a storage unit, which can be used to store instructions and/or data, and the processing unit 720 can read the instructions and/or data in the storage unit, so that the device implements the foregoing method embodiments Actions of different terminal devices, for example, actions of a relay terminal, a remote terminal, UE1 or UE2.

The device 700 can be used to execute the actions performed by the terminal device in the above method embodiments. At this time, the device 700 can be a terminal device or a component of the terminal device, and the transceiver unit 710 is used to perform the actions in the above method embodiments. For operations related to sending and receiving on the terminal device side, the processing unit 720 is configured to perform processing-related operations on the terminal device side in the above method embodiments.

It should also be understood that the apparatus 700 here is embodied in the form of functional units. The term "unit" here may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor for executing one or more software or firmware programs (such as a shared processor, a dedicated processor, or a group processor, etc.) and memory, incorporated logic, and/or other suitable components to support the described functionality. In an optional example, those skilled in the art can understand that the device 700 can be specifically the relay terminal in the above-mentioned embodiments, and can be used to execute various processes and/or steps corresponding to the relay terminal in the above-mentioned method embodiments Alternatively, the device 700 may specifically be the remote terminal in the above embodiments, and may be used to execute the processes and/or steps corresponding to the remote terminals in the above method embodiments. To avoid repetition, details are not repeated here.

The device 700 in each of the above solutions has the function of implementing the corresponding steps performed by the relay terminal in the above method, or the device 700 in the above various solutions has the function of implementing the corresponding steps performed by the remote terminal in the above method. The functions described above may be implemented by hardware, or may be implemented by executing corresponding software on the hardware. The hardware or software includes one or more modules corresponding to the above functions; for example, the transceiver unit can be replaced by a transceiver (for example, the sending unit in the transceiver unit can be replaced by a transmitter, and the receiving unit in the transceiver unit can be replaced by a receiver computer), and other units, such as a processing unit, may be replaced by a processor to respectively perform the sending and receiving operations and related processing operations in each method embodiment.

In addition, the transceiver unit 710 may also be a transceiver circuit (for example, may include a receiving circuit and a sending circuit), and the processing unit may be a processing circuit.

It should be noted that the apparatus in FIG. 7 may be the network element or device in the foregoing embodiments, or may be a chip or a chip system, for example, a system on chip (system on chip, SoC). Wherein, the transceiver unit may be an input-output circuit or a communication interface; the processing unit is a processor or a microprocessor or an integrated circuit integrated on the chip. There is no limit here.

As shown in FIG. 8 , this embodiment of the present application provides another communication device 800 . The device 800 includes a processor 810, the processor 810 is coupled with a memory 820, the memory 820 is used for storing computer programs or instructions and/or data, and the processor 810 is used for executing the computer programs or instructions stored in the memory 820, or reading the memory 820 The stored data is used to execute the methods in the above method embodiments.

Optionally, there are one or more processors 810 .

Optionally, there are one or more memories 820 .

Optionally, the memory 820 is integrated with the processor 810, or is set separately.

Optionally, as shown in FIG. 8 , the apparatus 800 further includes a transceiver 830 , and the transceiver 830 is used for receiving and/or sending signals. For example, the processor 810 is configured to control the transceiver 830 to receive and/or send signals.

As a solution, the apparatus 800 is used to implement the operations performed by the terminal device in the above method embodiments.

For example, the processor 810 is configured to execute the computer programs or instructions stored in the memory 820, so as to implement related operations of the relay terminal in the various method embodiments above. For example, the method performed by the relay terminal in any one of the embodiments shown in FIG. 2 to FIG. 6 .

As another example, the processor 810 is configured to execute the computer programs or instructions stored in the memory 820, so as to implement related operations of the remote terminal in the above method embodiments. For example, the method performed by the remote terminal in any one of the embodiments shown in FIG. 2 , FIG. 5 , and FIG. 6 , or the method performed by UE1 or UE2 in any one of the embodiments shown in FIG. 3 and FIG. 4 .

It should be understood that the processor mentioned in the embodiment of the present application may be a central processing unit (central processing unit, CPU), and may also be other general purpose processors, digital signal processors (digital signal processor, DSP), application specific integrated circuits ( application specific integrated circuit (ASIC), off-the-shelf programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.

It should also be understood that the memory mentioned in the embodiments of the present application may be a volatile memory and/or a nonvolatile memory. Among them, the non-volatile memory can be read-only memory (read-only memory, ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically programmable Erases programmable read-only memory (electrically EPROM, EEPROM) or flash memory. The volatile memory may be random access memory (RAM). For example, RAM can be used as an external cache. As an example and not limitation, RAM includes the following multiple forms: static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (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 connection dynamic random access memory (synchlink DRAM, SLDRAM) and direct Memory bus random access memory (direct rambus RAM, DR RAM).

It should be noted that when the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components, the memory (storage module) may be integrated in the processor.

It should also be noted that the memories described herein are intended to include, but are not limited to, these and any other suitable types of memories.

As shown in FIG. 9 , an embodiment of the present application provides a chip system 900 . The chip system 900 (or also called a processing system) includes a logic circuit 910 and an input/output interface (input/output interface) 920.

Wherein, the logic circuit 910 may be a processing circuit in the chip system 900 . The logic circuit 910 may be coupled to the storage unit, and invoke instructions in the storage unit, so that the chip system 900 can implement the methods and functions of the various embodiments of the present application. The input/output interface 920 may be an input/output circuit in the chip system 900, which outputs information processed by the chip system 900, or inputs data or signaling information to be processed into the chip system 900 for processing.

Specifically, for example, if the relay terminal is equipped with the chip system 900, the logic circuit 910 is coupled to the input/output interface 920, the logic circuit 910 can send the first information to the remote terminal through the input/output interface 920, and the first information can be It is the first information generated by the logic circuit 910 according to the first PC5 DRX parameter; or the input/output interface 920 can input the first demand indication information from the remote terminal to the logic circuit 910 for processing. For another example, if the remote terminal is equipped with the chip system 900, the logic circuit 910 is coupled to the input/output interface 920, the logic circuit 910 can send the first demand indication information to the relay terminal through the input/output interface 920, and the first demand indication The information may be the first demand indication information generated by the logic circuit 910 according to the absence of data receiving demand; or the input/output interface 920 may input the first information from the relay terminal to the logic circuit 910 for processing.

As a solution, the chip system 900 is used to implement the operations performed by the terminal device in the foregoing method embodiments.

For example, the logic circuit 910 is used to implement the processing-related operations performed by the relay terminal in the above method embodiments, for example, the processing-related operations performed by the relay terminal in any one of the embodiments shown in FIG. 2 to FIG. 6 ; The input/output interface 920 is used to implement the sending and/or receiving related operations performed by the relay terminal in the above method embodiments, such as the execution of the relay terminal in any one of the embodiments shown in Figures 2 to 6 Send and/or receive related operations.

As another example, the logic circuit 910 is used to implement the processing-related operations performed by the remote terminal in the above method embodiments, such as the processing-related operations performed by the remote terminal in any one of the embodiments shown in FIG. 2, FIG. 4 to FIG. operations, or the processing-related operations performed by UE1 or UE2 in the embodiment shown in FIG. 3; the input/output interface 920 is used to implement the sending and/or receiving-related operations performed by the remote terminal in the above method embodiments, For example, the sending and/or receiving related operations performed by the remote terminal in any one of the embodiments shown in FIG. 2 , FIG. 5 , or FIG. 6 , or UE1 or UE2 in any one of the embodiments shown in FIG. 3 and FIG. 4 Perform send and/or receive related operations.

The embodiment of the present application also provides a computer-readable storage medium, on which computer instructions for implementing the methods executed by the relay terminal or the remote terminal in the above method embodiments are stored.

For example, when the computer program is executed by a computer, the computer can implement the methods performed by the relay terminal in the above method embodiments.

The embodiment of the present application also provides a computer program product, including instructions, and when the instructions are executed by a computer, the methods executed by the relay terminal or the remote terminal in the foregoing method embodiments are implemented.

The embodiment of the present application also provides a communication system, which includes the relay terminal and the remote terminal in the above embodiments. For example, the system includes the relay terminal and the remote terminal in the embodiment shown in FIG. 3 .

For explanations and beneficial effects of relevant content in any of the devices provided above, reference may be made to the corresponding method embodiments provided above, and details are not repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed devices and methods may be implemented in other ways. For example, the device 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 can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

In the above embodiments, all or part of them may be implemented by software, hardware, firmware or any combination thereof. When implemented using software, it may 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 program instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present application will be generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices. For example, the computer may be a personal computer, a server, or a network 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 transmitted from a website, computer, server or data center Transmission to another website site, computer, server, or data center by wired (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 or a data center integrated with one or more available media. The available medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, DVD), or a semiconductor medium (for example, a solid state disk (SSD), etc. For example, the aforementioned available medium includes but Not limited to: 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 is only a specific implementation of the application, but the scope of protection of the application is not limited thereto. Anyone familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the application. Should be covered within the protection scope of this application. Therefore, the protection scope of the present application should be determined by the protection scope of the claims.

Claims

A communication method, characterized in that, comprising:

The relay terminal determines that the proximity service communication 5 discontinuously receives the first PC5 DRX parameter, and the first PC5 DRX parameter is used for the PC5 communication between the remote terminal and the relay terminal, and the remote terminal uses the a terminal connecting a terminal to a network or a target terminal;

The relay terminal sends first information to the remote terminal, where the first information includes: first indication information used to indicate the first PC5 DRX parameter, or the first PC5 DRX parameter.
The method according to claim 1, wherein the first indication information is a PC5 DRX mode, and the PC5 DRX mode corresponds to the first PC5 DRX parameter.
The method according to claim 1 or 2, characterized in that the method further comprises:

The relay terminal sends the correspondence between the first PC5 DRX parameter and the PC5 DRX mode to the remote terminal.
The method according to any one of claims 1-3, wherein the relay terminal determines the first PC5 DRX parameters, including:

The relay terminal determines the first PC5 DRX parameter according to the discontinuous reception DRX parameter of the relay terminal.
The method according to claim 4, wherein the relay terminal sends the first information to the remote terminal, comprising:

When the relay terminal enters an idle state and uses the DRX parameter to receive downlink information, the relay terminal sends the first information to the remote terminal.
The method according to any one of claims 1-3, wherein the relay terminal determines the first PC5 DRX parameters, including:

The relay terminal determines the first PC5 DRX parameter according to the extended discontinuous reception eDRX parameter of the relay terminal.
The method according to claim 6, wherein the relay terminal sends the first information to the remote terminal, comprising:

When the relay terminal enters an idle state and uses the eDRX parameter to receive downlink information, the relay terminal sends the first information to the remote terminal.
The method according to any one of claims 1-3, wherein the relay terminal determines the first PC5 DRX parameters, including:

The relay terminal determines the first PC5 DRX parameter according to a keep-alive timing period, and the keep-alive timing period is a period in which the relay terminal sends a keep-alive signaling.
The method according to claim 8, wherein the sending of the first information by the relay terminal to the remote terminal comprises:

The relay terminal sends the first information to the remote terminal when the relay terminal enters into a mobility-induced connection MICO mode.
The method according to any one of claims 1-3, wherein the relay terminal determines the first PC5 DRX parameters, including:

The relay terminal determines the first PC5 DRX parameter according to the service characteristics of the remote terminal.
The method according to any one of claims 1 to 10, wherein the first PC5 DRX parameters include a first DRX cycle and a first receiving window length.
The method according to any one of claims 1-3, wherein the relay terminal determines the first PC5 DRX parameters, including:

The relay terminal determines the first PC5 DRX parameter according to the second PC5 DRX parameter, and the second PC5 DRX parameter is used for PC5 communication between the target terminal and the relay terminal.
A communication method, characterized in that, comprising:

The remote terminal receives first information from the relay terminal, where the first information includes: first indication information used to indicate that the ProSe communication 5 discontinuously receives the first PC5 DRX parameter, or the first PC5 DRX parameter;

The remote terminal receives information from the relay terminal according to the first PC5 DRX parameter;

Wherein, the remote terminal is a terminal connected to a network or a target terminal through the relay terminal.
The method according to claim 13, wherein the first indication information is a PC5 DRX mode, and the PC5 DRX mode corresponds to the first PC5 DRX parameter.
The method according to claim 13 or 14, wherein the method further comprises:

The remote terminal receives the corresponding relationship between the first PC5 DRX parameter and the PC5 DRX mode from the relay terminal;

When the first information is the first indication information, the remote terminal determines the first PC5 DRX parameter according to the correspondence relationship and the first indication information.
The method according to any one of claims 13 to 15, wherein the first PC5 DRX parameters include a first discontinuous reception DRX cycle and a first reception window length.
A communication method, characterized in that, comprising:

The relay terminal learns that none of the remote terminals corresponding to the relay terminal has a data receiving requirement;

The relay terminal sends a request to the network device to enter the mobile-only connection MICO mode;

receiving, by the relay terminal, a response message from the network device in response to the request;

The relay terminal enters the MICO mode according to the response message;

Wherein, the remote terminal corresponding to the relay terminal includes one or more terminals connected to the network through the relay terminal.
The method according to claim 17, wherein the relay terminal learns that none of the remote terminals corresponding to the relay terminal has a data receiving requirement, comprising:

The relay terminal receives first demand indication information from a remote terminal corresponding to the relay terminal, where the first demand indication information is used to indicate that the remote terminal does not have a data reception demand;

The relay terminal learns that none of the remote terminals corresponding to the relay terminal has a data reception requirement according to the first demand indication information of the remote terminals corresponding to the relay terminal.
A communication method, characterized in that, comprising:

The remote terminal determines whether the remote terminal has a data receiving requirement;

When there is no demand for data reception, the remote terminal sends first demand indication information to the relay terminal, where the first demand indication is used to indicate that the remote terminal does not have a data reception demand;

Wherein, the remote terminal is a terminal connected to the network through the relay terminal.
A communication device, characterized by comprising:

A processor configured to execute the computer program stored in the memory, so that the device executes the method according to any one of claims 1 to 18.
The apparatus of claim 20, further comprising the memory.
A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, and when the computer program is run on a computer, the computer executes any one of claims 1 to 19. method described in the item.
A computer program product, characterized in that the computer program product comprises instructions for performing the method according to any one of claims 1 to 19.
A communication system, characterized by comprising: a relay terminal and a remote terminal;

The relay terminal is configured to execute the method according to any one of claims 1 to 12 or 17 to 18;

The remote terminal is configured to execute the method according to any one of claims 13 to 16 or 19.