Communication method and communication apparatus

Abstract

The embodiment of the application provides a communication method and a communication device, the communication method comprises the following steps: a relay terminal determines a first PC5 discontinuous reception (DRX) parameter of a proximity service communication, the first PC5 DRX parameter is used for PC5 communication between a remote terminal and the relay terminal, the remote terminal is a terminal connected to a network or a target terminal through the relay terminal; the relay terminal sends first information to the remote terminal, the first information comprises: first indication information used for indicating the first PC5 DRX parameter, or the first PC5 DRX parameter. Through the method, the energy saving method when there is no data transmission between terminal devices can be determined through negotiation, so as to reduce the terminal energy consumption and realize better energy saving.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the field of communications, and more particularly, to a communication method and a communication apparatus. BACKGROUND

[0002] With the rapid development of mobile communications, the popular use of new service types (such as video chat, virtual reality / augmented reality (VR / AR), etc.) increases the user demand for bandwidth and latency. Device-to-device (D2D) communication allows user equipment (UE) to communicate directly between each other, effectively reducing communication latency and improving the utilization of spectrum resources.

[0003] In D2D communication, UEs communicate through a proximity-based services communication 5 (PC5) interface, which can be used for information transmission in the data plane and the control plane. For a certain UE, when the communication signal between the UE and the radio access network (RAN) device is not good or the UE cannot directly connect to the target UE, the UE can access the network or connect to the target UE through a relay UE to assist the UE, thereby realizing the communication between the UE (which can be referred to as a remote UE) and the network or the target UE.

[0004] Since the battery energy of the UE is limited, how to better save energy for the UE in D2D communication has become a problem that needs to be solved in the industry. SUMMARY

[0005] Embodiments of the present application provide a communication method and a communication apparatus, which can reduce the energy consumption of a terminal in D2D communication.

[0006] In a first aspect, a communication method is provided, which can be executed by a terminal device, or also can be executed by a component (such as a chip or a circuit) of the terminal device, and no limitation is made in this regard. For ease of description, the following is described by way of example with execution by a relay terminal.

[0007] The method can include: determining, by a relay terminal, a first PC5 discontinuous reception (PC5 DRX) parameter for proximity-based services communication 5, the first PC5 DRX parameter being used for PC5 communication between a remote terminal and the relay terminal, the remote terminal being a terminal connected to a network or a target terminal through the relay terminal; and sending, by the relay terminal, 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.

[0008] Based on the above scheme, the remote terminal can learn 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 (communication based on the PC5 interface) with the relay terminal according to the first PC5 DRX parameter, avoiding the remote terminal still listening to the wireless channel when there is no data transmission, greatly reducing the energy consumption of the terminal.

[0009] In combination with the first aspect, in some implementations of the first aspect, the first indication information is a PC5 DRX mode corresponding to the first PC5 DRX parameter.

[0010] Based on the above technical scheme, the first information can be the first PC5 DRX parameter, or the PC5 DRX mode corresponding to the first PC5 DRX parameter, that is, the first information can have different forms, increasing the flexibility of the scheme.

[0011] In combination with the first aspect, in some implementations of the first aspect, the method further includes: the relay terminal sending a correspondence between the first PC5 DRX parameter and the PC5 DRX mode to the remote terminal.

[0012] Further, the remote terminal can receive the correspondence of the first PC5 DRX parameter, and obtain the first PC5 DRX parameter according to the correspondence, realizing the flexibility of the remote terminal obtaining the first PC5 DRX parameter.

[0013] In combination with the first aspect, in some implementations of the first aspect, the relay terminal determining the first PC5 DRX parameter includes: the relay terminal determining the first PC5 DRX parameter according to a discontinuous reception (DRX) parameter of the relay terminal.

[0014] Based on the above technical scheme, 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 listening to the wireless channel when there is no data transmission, thereby reducing the energy consumption.

[0015] In combination with the first aspect, in some implementations of the first aspect, the relay terminal sending the first information to the remote terminal includes: when the relay terminal enters an idle state and receives downlink information using a DRX parameter, the relay terminal sends the first information to the remote terminal.

[0016] Based on the above technical solution, when the relay terminal enters the idle state and receives downlink information using the DRX parameter, the relay terminal sends the first PC5 DRX parameter determined according to the DRX parameter of the relay terminal to the remote terminal in the first information, and then the relay terminal can accurately inform the remote terminal to use the first PC5 DRX parameter according to the communication state of the relay terminal, avoiding the use of inaccurate PC5 DRX parameters by the remote terminal.

[0017] In combination with the first aspect, in some implementations of the first aspect, the relay terminal determines the first PC5 DRX parameter, including: the relay terminal determines the first PC5 DRX parameter according to an extended discontinuous reception (eDRX) parameter of the relay terminal.

[0018] Based on the above technical solution, the relay terminal determines the first PC5 DRX parameter for PC5 communication according to the eDRX parameter of the relay terminal, 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 listening to the wireless channel when there is no data transmission, thereby reducing energy consumption.

[0019] In combination with the first aspect, in some implementations of the first aspect, the relay terminal sends the first information to the remote terminal, including: when the relay terminal enters the idle state and receives downlink information using the eDRX parameter, the relay terminal sends the first information to the remote terminal.

[0020] Based on the above technical solution, when the relay terminal enters the idle state and receives downlink information using the eDRX parameter, the relay terminal sends the first PC5 DRX parameter determined according to the eDRX parameter of the relay terminal to the remote terminal in the first information, and then the relay terminal can accurately inform the remote terminal to use the first PC5 DRX parameter according to the communication state of the relay terminal, avoiding the use of inaccurate PC5 DRX parameters by the remote terminal.

[0021] In combination with the first aspect, in some implementations of the first aspect, the relay terminal determines the first PC5 DRX parameter, including: the relay terminal determines the first PC5 DRX parameter according to a keep-alive timing period, the keep-alive timing period being a period for the relay terminal to send keep-alive signaling.

[0022] Based on the above technical solution, the relay terminal determines the first PC5 DRX parameter for PC5 communication according to the keep-alive timing period of the relay terminal, so that the remote terminal only needs to listen to the wireless channel at a specific time, thereby reducing energy consumption.

[0023] In some implementations of the first aspect, the relay terminal sends the first information to the remote terminal, including: when the relay terminal enters a mobile initiated connection only (MICO) mode, the relay terminal sends the first information to the remote terminal.

[0024] Based on the above technical solution, when the relay terminal enters a mobile initiated connection only (MICO) mode, the relay terminal sends the first PC5 DRX parameter determined according to its own keep-alive timing cycle to the remote terminal in the first information, and then the relay terminal can accurately inform the remote terminal to use the first PC5 DRX parameter according to its own communication state, avoiding the remote terminal using inaccurate PC5 DRX parameters.

[0025] In some implementations of the first aspect, the relay terminal determines the first PC5 DRX parameter, including: the relay terminal determines the first PC5 DRX parameter according to the service characteristics of the remote terminal. It should be understood that the service characteristics can be a service arrival period or a delay tolerance value of the remote terminal to downlink services.

[0026] Based on the above technical solution, the relay terminal determines the first PC5 DRX parameter according to the service characteristics, thereby avoiding the remote terminal still listening to the wireless channel when there is no data transmission of the service, and reducing energy consumption.

[0027] In some implementations of the first aspect, the first PC5 DRX parameter includes a first DRX period and a first reception window length.

[0028] In some implementations of the first aspect, the relay terminal determines the first PC5 DRX parameter, including: the relay terminal determines the first PC5 DRX parameter according to a second PC5 DRX parameter, the second PC5 DRX parameter being used for PC5 communication between the target terminal and the relay terminal.

[0029] Based on the above technical solution, the relay terminal determines the first PC5 DRX parameter for PC5 communication according to its own second PC5 DRX parameter, thereby avoiding the remote terminal still listening to the wireless channel when there is no data transmission, and reducing energy consumption.

[0030] The second aspect provides a communication method, which can be executed by a terminal device or a component (such as a chip or a circuit) of the terminal device. For the convenience of description, the following describes the method executed by a remote terminal.

[0031] The method can include: receiving, by the remote terminal, first information from the relay terminal, the first information including: first indication information indicating a first PC5 DRX parameter for a proximity service communication discontinuous reception, or the first PC5 DRX parameter; and receiving, by the remote terminal, information from the relay terminal according to the first PC5 DRX parameter, wherein the remote terminal is a terminal connected to a network through the relay terminal.

[0032] Based on the above scheme, the remote terminal can learn the first PC5 DRX parameter for PC5 communication of the relay terminal based on the first information, so that the remote terminal performs PC5 communication (communication based on a PC5 interface) with the relay terminal according to the first PC5 DRX parameter, avoiding the remote terminal listening to a radio channel when there is no data transmission, and greatly reducing the energy consumption of the terminal.

[0033] In combination with the second aspect, in some implementations of the second aspect, the first indication information is a PC5 DRX mode corresponding to the first PC5 DRX parameter.

[0034] Based on the above technical scheme, the first information can be the first PC5 DRX parameter, or a PC5 DRX mode corresponding to the first PC5 DRX parameter, that is, the first information can have different forms, increasing the flexibility of the scheme.

[0035] In combination with the second aspect, in some implementations of the second aspect, the method further includes: receiving, by the remote terminal, a correspondence between the first PC5 DRX parameter and a PC5 DRX mode from the relay terminal; and when the first information is the first indication information, determining, by the remote terminal, the first PC5 DRX parameter according to the correspondence and the first indication information.

[0036] Further, the remote terminal can receive the correspondence of the first PC5 DRX parameter, and obtain the first PC5 DRX parameter according to the correspondence, realizing the flexibility of the remote terminal obtaining the first PC5 DRX parameter.

[0037] In combination with the second aspect, in some implementations of the second aspect, the first PC5 DRX parameter includes a DRX cycle and a reception window length.

[0038] The third 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, and the execution is not limited. For ease of description, the following is described by taking the execution by a relay terminal as an example.

[0039] The method can comprise: the relay terminal learning that all remote terminals corresponding to the relay terminal have no data reception requirement; the relay terminal sending a request to enter a mobile initiated connection only (MICO) mode to a network device; the relay terminal receiving a response message from the network device in response to the request; and the relay terminal entering the MICO mode according to the response message; wherein the remote terminals corresponding to the relay terminal comprise one or more terminals connected to the network through the relay terminal.

[0040] Based on the above technical solution, the relay terminal requests to enter the MICO mode after learning that all remote terminals corresponding to the relay terminal have no data reception requirement, thereby avoiding the relay terminal from listening to a wireless channel when all remote terminals have no downlink data reception requirement, and effectively reducing the energy consumption of the terminal. Further, the relay terminal determines whether to request to enter the MICO mode according to the downlink data reception requirement of the remote terminals, thereby greatly reducing the energy consumption of the terminal.

[0041] In combination with the third aspect, in some implementations of the third aspect, the relay terminal learning that all remote terminals corresponding to the relay terminal have no data reception requirement comprises: the relay terminal receiving first requirement indication information from remote terminals corresponding to the relay terminal, the first requirement indication information being used to indicate that there is no data reception requirement; and the relay terminal learning that all remote terminals corresponding to the relay terminal have no data reception requirement according to the first requirement indication information of the remote terminals corresponding to the relay terminal.

[0042] Based on the above technical solution, the relay terminal can determine to request to enter the MICO mode according to all served remote terminals having no data reception requirement, thereby avoiding unnecessary listening to a wireless channel and reducing energy consumption.

[0043] A fourth aspect provides a communication method, which can be executed by a terminal device or a component (such as a chip or a circuit) of the terminal device, and is not limited in this regard. For ease of description, the method is described below by taking a remote terminal as an example.

[0044] The method can comprise: the remote terminal determining whether there is a data reception requirement; and when there is no data reception requirement, the remote terminal sending first requirement indication information to a relay terminal, the first requirement indication information being used to indicate that there is no data reception requirement; wherein the remote terminal is a terminal connected to a network through the relay terminal.

[0045] Based on the above technical solution, the remote terminal notifies the relay terminal of its data reception requirement, so that the relay terminal can initiate a request to enter a MICO mode according to all remote terminals corresponding to the relay terminal having no data reception requirement, thereby achieving energy saving between the relay terminal and network communication.

[0046] In a fifth aspect, a communication method is provided, which can be executed by a terminal device, or can also be executed by a component (for example, a chip or a circuit) of the terminal device, and no limitation is made in this regard. For ease of description, the following is described by way of example with execution by a relay terminal.

[0047] The method can include: receiving, by the relay terminal, a discontinuous reception (DRX) parameter of a remote terminal corresponding to the relay terminal; determining, by the relay terminal, a DRX parameter of the relay terminal according to the DRX parameter of the remote terminal; or receiving, by the relay terminal, an extended discontinuous reception (eDRX) parameter of a remote terminal corresponding to the relay terminal; determining, by the relay terminal, an eDRX parameter of the relay terminal according to the eDRX parameter of the remote terminal; wherein the remote terminal corresponding to the relay terminal includes one or more terminals connected to a network through the relay terminal.

[0048] Based on the above technical solution, the relay terminal determines the DRX parameter or the eDRX parameter of the relay terminal by learning the DRX parameter or the eDRX parameter of the remote terminal corresponding to the relay terminal. The method provided in the above embodiment enables the relay terminal to listen to a wireless channel only at a possible paging time of the remote terminal, thereby greatly reducing the energy consumption of the terminal.

[0049] In a sixth aspect, a communication method is provided, which can be executed by a terminal device, or can also be executed by a component (for example, a chip or a circuit) of the terminal device, and no limitation is made in this regard. For ease of description, the following is described by way of example with execution by a remote terminal.

[0050] The method can include: sending, by the remote terminal to a relay terminal, a discontinuous reception (DRX) parameter or an extended discontinuous reception (eDRX) parameter of the remote terminal; wherein the remote terminal is a terminal connected to a network through the relay terminal.

[0051] Based on the above technical solution, the remote terminal sends its DRX parameter or eDRX parameter to the relay terminal, so that the relay terminal determines its own DRX parameter or eDRX parameter according to the DRX parameter or eDRX parameter of the remote terminal corresponding to the relay terminal, and the relay terminal only listens to a wireless channel at a possible paging time of the remote terminal, thereby greatly reducing the energy consumption of the terminal.

[0052] In a seventh aspect, a communication method is provided, which can be executed by a terminal device, or can also be executed by a component (for example, a chip or a circuit) of the terminal device, and no limitation is made in this regard. For ease of description, the following is described by way of example with execution by a relay terminal.

[0053] The method can comprise: receiving, by the relay terminal, downlink data of the remote terminal, the remote terminal being in a first mode, the first mode being used to represent that only a function of receiving PC5 interface signaling is turned on or a function of receiving PC5 interface data is not turned on; and sending, by the relay terminal, third information to the remote terminal, the third information being used to inform that there is downlink data of the remote terminal; and wherein the remote terminal is a terminal connected to a network device or a target terminal through the relay terminal.

[0054] Based on the above technical solution, when there is no data transmission of the remote terminal, the relay terminal instructs the remote terminal to turn off the function of receiving data, thereby avoiding that the remote terminal still listens to the wireless channel when there is no data transmission, and greatly reducing the energy consumption of the terminal.

[0055] In combination with the seventh aspect, in some implementations of the seventh aspect, the method further comprises: determining, by the relay terminal, that the remote terminal is in the first mode.

[0056] Based on the above technical solution, after the relay terminal determines that the remote terminal is in the first mode of only receiving PC5 signaling, the relay terminal can not directly send data to the remote terminal, thereby reducing energy consumption.

[0057] In combination with the seventh aspect, in some implementations of the seventh aspect, the determining, by the relay terminal, that the remote terminal is in the first mode comprises: receiving, by the relay terminal, first mode information from the remote terminal, the first mode information being used to represent that the remote terminal is in the first mode.

[0058] 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, thereby realizing flexibility of the relay terminal knowing that the remote terminal is in the first mode.

[0059] In combination with the seventh aspect, in some implementations of the seventh aspect, the determining, by the relay terminal, that the remote terminal is in the first mode comprises: if the relay terminal does not receive downlink data of the remote terminal within a preset time length, sending, by the relay terminal, fourth information to the remote terminal, the fourth information being used to trigger the remote terminal to enter the first mode.

[0060] Based on the above technical solution, the relay terminal can instruct the remote terminal to enter the first mode, thereby realizing flexibility of the relay terminal knowing that the remote terminal is in the first mode. In combination with the seventh aspect, in some implementations of the seventh aspect, the method further comprises: storing, by the relay terminal, first mode information of the remote terminal, the first mode information being used to represent that the remote terminal is in the first mode.

[0061] Based on the above technical solution, after the relay terminal determines that the remote terminal is in the first mode, the first mode information representing that the remote terminal is in the first mode is stored, so as to not directly send data to the remote terminal after receiving downlink data of the remote terminal, thereby reducing energy consumption.

[0062] With reference to the seventh aspect, in some implementations of the seventh aspect, the method further includes: storing, by the relay terminal, the downlink data.

[0063] With reference to the seventh aspect, in some implementations of the seventh aspect, the method further includes: receiving, by the relay terminal, first configuration information from the remote terminal, the first configuration information including a bandwidth part (BWP) and / or an unlicensed spectrum; and transmitting, by the relay terminal, the downlink data to the remote terminal according to the first configuration information.

[0064] Based on the above technical solution, the relay terminal can transmit the downlink data according to the BWP and / or the unlicensed spectrum transmitted by the remote terminal, and flexible user plane configuration is achieved.

[0065] An eighth aspect provides a communication method, which can be executed by a terminal device or a component (such as a chip or a circuit) of the terminal device, and is not limited in this regard. For ease of description, the method is described below as being executed by a remote terminal.

[0066] The method can include: receiving, by the remote terminal, third information from a relay terminal, the third information being used to notify that there is downlink data of the remote terminal; and establishing, by the remote terminal, a user plane connection according to the third information, the user plane connection being used to transmit the downlink data; wherein the remote terminal is a terminal connected to a network device or a target terminal through the relay terminal.

[0067] Based on the above technical solution, when there is no data transmission of the remote terminal, the remote terminal closes the function of receiving data. This avoids the remote terminal listening to a wireless channel when there is no data transmission, and greatly reduces the energy consumption of the terminal.

[0068] With reference to the eighth aspect, in some implementations of the eighth aspect, the remote terminal receiving the third information from the relay terminal includes: receiving, by the remote terminal, the third information from the relay terminal when the remote terminal is in a first mode, the first mode being used to represent that only a function of receiving PC5 interface signaling is enabled or a function of receiving PC5 interface data is not enabled.

[0069] With reference to the eighth aspect, in some implementations of the eighth aspect, the method further includes: switching, by the remote terminal, from the first mode to a second mode according to the third information, the second mode being used to represent that the function of receiving PC5 interface data is enabled.

[0070] Based on the above technical solution, the remote terminal enables the function of receiving data only after receiving the third information, which avoids the remote terminal listening to a wireless channel when there is no data transmission, and thus reduces energy consumption.

[0071] In some implementations of the eighth aspect, the method further includes: entering the first mode when there is no data transmission between the remote terminal and the network device or the target terminal within a preset time period.

[0072] Based on the above technical solution, the remote terminal can enter the first mode, and flexibility of the remote terminal entering the first mode is achieved.

[0073] In some implementations of the eighth aspect, the method further includes: sending, by the remote terminal, first mode information to the relay terminal, the first mode information being used to indicate that the remote terminal is in the first mode.

[0074] Based on the above technical solution, the relay terminal can learn that the remote terminal is in the first mode, and flexibility of the relay terminal learning that the remote terminal is in the first mode is achieved.

[0075] In some implementations of the eighth aspect, the method further includes: receiving, by the remote terminal, fourth information from the relay terminal, the fourth information being used to trigger the remote terminal to enter the first mode; and entering, by the remote terminal, the first mode according to the fourth information.

[0076] Based on the above technical solution, the remote terminal enters the first mode according to the fourth information, and flexibility of the remote terminal entering the first mode is achieved.

[0077] In some implementations of the eighth aspect, the method further includes: sending, by the remote terminal, first configuration information to the relay terminal, the first configuration information being used for the relay terminal to send downlink data, the first configuration information including a bandwidth part (BWP) and / or an unlicensed spectrum; and receiving, by the remote terminal, the downlink data from the relay terminal.

[0078] Based on the above technical solution, the remote terminal sends the BWP and / or the unlicensed spectrum used for sending the downlink data to the relay terminal, and flexible user plane configuration is achieved.

[0079] The ninth aspect provides a communication method, which can be executed by a terminal device or a component (for example, a chip or a circuit) of the terminal device, and is not limited in this regard. For ease of description, the method is described below by taking a relay terminal as an example.

[0080] The method can include: receiving, by the relay terminal, fifth information from a remote terminal, the fifth information being used to notify that there is uplink data in the remote terminal; and establishing, by the relay terminal, a user plane connection according to the fifth information, the user plane connection being used to transmit the uplink data; wherein the remote terminal is a terminal connected to a network device or a target terminal through the relay terminal.

[0081] Based on the above technical scheme, when the relay terminal does not receive the data transmission of the remote terminal, the relay terminal closes the function of receiving data. Avoids that the relay terminal still listens to the wireless channel when there is no data transmission, and greatly reduces the energy consumption of the terminal.

[0082] With reference to the ninth aspect, in some implementations of the ninth aspect, the relay terminal receiving the fifth information from the remote terminal includes: the relay terminal receiving the fifth information from the remote terminal in a first mode, the first mode being 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.

[0083] With reference to the ninth aspect, in some implementations of the ninth aspect, the method further includes: the relay terminal switching from the first mode to a second mode according to the fifth information, the second mode being used to represent that the function of receiving PC5 interface data is enabled.

[0084] Based on the above technical scheme, the relay terminal enables the function of receiving data only after receiving the fifth information, avoids that the remote terminal still listens to the wireless channel when there is no data transmission, and thus reduces the energy consumption.

[0085] With reference to the ninth aspect, in some implementations of the ninth aspect, the method further includes: the relay terminal entering the first mode when the relay terminal does not receive the uplink data transmission of the remote terminal within a preset time length.

[0086] Based on the above technical scheme, the relay terminal can enter the first mode, and the flexibility of the relay terminal entering the first mode is realized.

[0087] With reference to the ninth aspect, in some implementations of the ninth aspect, the method further includes: the relay terminal sending second mode information to the remote terminal, the second mode information being used to represent that the relay terminal is in the first mode.

[0088] Based on the above technical scheme, the remote terminal can know that the relay terminal is in the first mode, and the flexibility of the remote terminal knowing that the relay terminal is in the first mode is realized.

[0089] With reference to the ninth aspect, in some implementations of the ninth aspect, the method further includes: the relay terminal receiving sixth information from the remote terminal, the sixth information being used to trigger the relay terminal to enter the first mode; and the relay terminal entering the first mode according to the sixth information.

[0090] Based on the above technical scheme, the relay terminal enters the first mode according to the sixth information, and the flexibility of the remote terminal entering the first mode is realized.

[0091] In some implementations of the ninth aspect, the method further includes: sending, by the relay terminal, second configuration information to the remote terminal, the second configuration information being used for the remote terminal to send uplink data, the second configuration information including a BWP and / or an unlicensed frequency spectrum; and receiving, by the relay terminal, the uplink data from the remote terminal.

[0092] Based on the above technical solution, the relay terminal sends the BWP and / or the unlicensed frequency spectrum used for sending the uplink data to the remote terminal, and flexible user plane configuration is achieved.

[0093] The tenth aspect provides a communication method, which can be executed by a terminal device or a component (for example, a chip or a circuit) of the terminal device, and is not limited in this regard. For ease of description, the method is described below by taking a remote terminal as an example.

[0094] The method can include: determining, by the remote terminal, that there is uplink data; and sending, by the remote terminal, fifth information to the relay terminal, the fifth information being used for notifying the relay terminal that there is uplink data, wherein the relay terminal is in a first mode, the first mode being used to represent that only a function of receiving PC5 interface signaling is enabled or a 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 the relay terminal.

[0095] Based on the above technical solution, when the remote terminal has no data transmission, the relay terminal closes the function of receiving data, thereby avoiding the relay terminal from listening to a wireless channel when there is no data transmission, and greatly reducing the energy consumption of the terminal.

[0096] In some implementations of the tenth aspect, the method further includes: determining, by the remote terminal, that the relay terminal is in the first mode.

[0097] Based on the above technical solution, after the remote terminal determines that the relay terminal is in the first mode of only receiving PC5 signaling, the remote terminal can not directly send data to the remote terminal, thereby reducing energy consumption.

[0098] In some implementations of the tenth aspect, the remote terminal determining that the relay terminal is in the first mode includes: receiving, by the remote terminal, second mode information from the relay terminal, the second mode information being used to represent that the relay terminal is in the first mode.

[0099] Based on the above technical solution, the remote terminal can learn that the relay terminal is in the first mode according to the second mode information, and flexibility of the remote terminal learning that the relay terminal is in the first mode is achieved.

[0100] In some implementations of the tenth aspect, the remote terminal determines that the relay terminal is in the first mode by: if there is no uplink data transmission of the remote terminal within a preset time length, the remote terminal sends sixth information to the relay terminal, the sixth information being used to trigger the relay terminal to enter the first mode.

[0101] Based on the above technical solution, the remote terminal can instruct the relay terminal to enter the first mode, and the flexibility of the remote terminal knowing that the relay terminal is in the first mode is achieved.

[0102] In some implementations of the tenth aspect, the method further includes: the remote terminal storing second mode information of the relay terminal, the second mode information being used to represent that the relay terminal is in the first mode.

[0103] Based on the above technical solution, when the remote terminal determines that the relay terminal is in the first mode, the second mode information representing that the relay terminal is in the first mode is stored, so that after receiving the uplink data, the remote terminal does not directly send data to the relay terminal, thereby reducing energy consumption.

[0104] In some implementations of the tenth aspect, the method further includes: the remote terminal receiving second configuration information from the relay terminal, the second configuration information including a BWP and / or an unlicensed spectrum; and the remote terminal sending uplink data to the relay terminal according to the second configuration information.

[0105] 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, and flexible user plane configuration is achieved.

[0106] In the eleventh aspect, a communication device is provided, which includes units for executing the method shown in the first aspect, and the communication device can be a relay terminal, or a chip or circuit arranged in the relay terminal, which is not limited in the present application.

[0107] The communication device includes:

[0108] The processing unit is configured to determine a first PC5 discontinuous reception (DRX) parameter for PC5 communication between the remote terminal and the relay terminal, the remote terminal being a terminal connected to a network or a target terminal through the relay terminal; and the transceiver unit is 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.

[0109] In some implementations of the eleventh aspect, the first indication information is a PC5 DRX mode corresponding to the first PC5 DRX parameter.

[0110] In some implementations of the eleventh aspect, the apparatus further includes a transceiver configured to transmit, to the remote terminal, a correspondence between the first PC5 DRX parameter and the PC5 DRX mode.

[0111] In some implementations of the eleventh aspect, the processing unit is further configured to determine the first PC5 DRX parameter according to a discontinuous reception, DRX, parameter of the relay terminal.

[0112] In some implementations of the eleventh aspect, the transceiver is further configured to transmit the first information to the remote terminal when the relay terminal enters an idle state and receives downlink information using the DRX parameter.

[0113] In some implementations of the eleventh aspect, the processing unit is further configured to determine the first PC5 DRX parameter according to an extended discontinuous reception, eDRX, parameter of the relay terminal.

[0114] In some implementations of the eleventh aspect, the transceiver is further configured to transmit the first information to the remote terminal when the relay terminal enters an idle state and receives downlink information using the eDRX parameter.

[0115] In some implementations of the eleventh aspect, the processing unit is further configured to determine the first PC5 DRX parameter according to a keep-alive timing period, the keep-alive timing period being a period at which the relay terminal transmits keep-alive signaling.

[0116] In some implementations of the eleventh aspect, the transceiver is further configured to transmit the first information to the remote terminal when the relay terminal enters a mobile initiated connection only, MICO, mode.

[0117] In some implementations of the eleventh aspect, the processing unit is further configured to determine the first PC5 DRX parameter according to a service characteristic of the remote terminal.

[0118] It should be understood that the service characteristic can be a service arrival period or a delay tolerance value of the remote terminal for downlink services.

[0119] In some implementations of the eleventh aspect, the first PC5 DRX parameter includes a DRX period and a reception window length.

[0120] The explanation and beneficial effects of the communication device provided in the eleventh aspect can refer to the method shown in the first aspect, and will not be repeated here.

[0121] In a twelfth aspect, a communication device is provided, which includes units for performing the method shown in the second aspect. The communication device can be a remote terminal, or can be a chip or circuit arranged in the remote terminal, which is not limited in the present application.

[0122] The communication device includes:

[0123] The transceiver is configured to receive first information from the relay terminal, the first information including: first indication information used to indicate a first PC5 DRX parameter of a proximity service communication discontinuous reception (PC5 DRX), or the first PC5 DRX parameter; and the processing unit is configured to receive information from the relay terminal according to the first PC5 DRX parameter. The remote terminal is a terminal connected to a network or a target terminal through the relay terminal.

[0124] In some implementations of the twelfth aspect, the first indication information is a PC5 DRX mode corresponding to the first PC5 DRX parameter.

[0125] In some implementations of the twelfth aspect, the device further includes: the transceiver is further configured to receive a correspondence between the first PC5 DRX parameter and the PC5 DRX mode from the relay terminal; and the processing unit is further configured to, when the first information is the first indication information, determine the first PC5 DRX parameter according to the correspondence and the first indication information.

[0126] In some implementations of the twelfth aspect, the first PC5 DRX parameter includes a DRX cycle and a reception window length.

[0127] The explanation and beneficial effects of the communication device provided in the twelfth aspect can refer to the method shown in the second aspect, and will not be repeated here.

[0128] In a thirteenth aspect, a communication device is provided, which includes units for performing the method shown in the third aspect. The communication device can be a relay terminal, or can be a chip or circuit arranged in the relay terminal, which is not limited in the present application.

[0129] The communication device includes:

[0130] The processing unit is configured to learn that there is no data reception requirement in the remote terminals corresponding to the relay terminal; the transceiver is configured to send a request message to the network device, the request message being used to request entering a mobile initiated connection only, MICO, mode; the transceiver is further configured to receive a response message from the network device in response to the request message; and the processing unit is further configured to enter the MICO mode according to the response message. The remote terminals corresponding to the relay terminal include one or more terminals connected to the network through the relay terminal.

[0131] With reference to the thirteenth aspect, in some implementations of the thirteenth aspect, the apparatus further includes that the transceiver is further configured to receive first demand indication information from the remote terminals corresponding to the relay terminal, the first demand indication information being used to indicate that there is no data reception requirement; and the processing unit is further configured to learn that there is no data reception requirement in the remote terminals corresponding to the relay terminal according to the first demand indication information of the remote terminals corresponding to the relay terminal.

[0132] The explanations and beneficial effects of the communication device provided in the thirteenth aspect can be referred to the method shown in the third aspect, and will not be repeated here.

[0133] In the fourteenth aspect, a communication device is provided, which includes units for performing the method shown in the fourth aspect. The communication device can be a remote terminal, or can be a chip or circuit arranged in the remote terminal, which is not limited in the present application.

[0134] The communication device includes:

[0135] The processing unit is configured to determine whether there is a data reception requirement.

[0136] The transceiver is configured to send first demand indication information to the relay terminal when there is no data reception requirement, the first demand indication information being used to indicate that there is no data reception requirement. The remote terminal is a terminal connected to the network through the relay terminal.

[0137] The explanations and beneficial effects of the communication device provided in the fourteenth aspect can be referred to the method shown in the fourth aspect, and will not be repeated here.

[0138] In the fifteenth aspect, a communication device is provided, which includes units for performing the method shown in the fifth aspect. The communication device can be a relay terminal, or can be a chip or circuit arranged in the relay terminal, which is not limited in the present application.

[0139] The communication device includes:

[0140] The transceiver unit is configured to receive discontinuous reception (DRX) parameters of a remote terminal corresponding to the relay terminal, and the processing unit is configured to determine DRX parameters of the relay terminal according to the DRX parameters of the remote terminal. Alternatively, the transceiver unit is configured to receive extended discontinuous reception (eDRX) parameters of a remote terminal corresponding to the relay terminal, and the processing unit is configured to determine eDRX parameters of the relay terminal according to the eDRX parameters of the remote terminal. The remote terminal corresponding to the relay terminal includes one or more terminals connected to a network through the relay terminal.

[0141] The explanation and beneficial effects of the communication device provided in the fifteenth aspect can refer to the method shown in the fifth aspect, and will not be repeated here.

[0142] In the sixteenth aspect, a communication device is provided, which includes units for executing the method shown in the sixth aspect. The communication device can be a remote terminal, or can be a chip or circuit arranged in the remote terminal, which is not limited in the present application.

[0143] The communication device includes:

[0144] The transceiver unit is configured to send DRX parameters or eDRX parameters of the remote terminal to the relay terminal. The remote terminal is a terminal connected to a network through the relay terminal.

[0145] The explanation and beneficial effects of the communication device provided in the sixteenth aspect can refer to the method shown in the sixth aspect, and will not be repeated here.

[0146] In the seventeenth aspect, a communication device is provided, which includes units for executing the method shown in the seventh aspect. The communication device can be a relay terminal, or can be a chip or circuit arranged in the relay terminal, which is not limited in the present application.

[0147] The communication device includes:

[0148] The transceiver unit is configured to receive downlink data of a remote terminal, and the remote terminal is in a first mode. The first mode is used to represent that only the function of receiving PC5 interface signaling is turned on or the function of receiving PC5 interface data is not turned on. The transceiver unit is also configured to send third information to the remote terminal, and the third information is used to notify that there is downlink data of the remote terminal. The remote terminal is a terminal connected to a network device or a target terminal through the relay terminal.

[0149] In combination with the seventeenth aspect, in some implementations of the seventeenth aspect, the device further includes a processing unit configured to determine that the remote terminal is in the first mode.

[0150] In some implementations of the seventeenth aspect, in conjunction with the seventeenth aspect, the transceiver is further configured to receive first mode information from the remote terminal, the first mode information indicating that the remote terminal is in the first mode.

[0151] In some implementations of the seventeenth aspect, in conjunction with the seventeenth aspect, the transceiver is further configured to transmit fourth information to the remote terminal if the relay terminal does not receive downlink data of the remote terminal within a preset time period, the fourth information triggering the remote terminal to enter the first mode.

[0152] In some implementations of the seventeenth aspect, in conjunction with the seventeenth aspect, the apparatus further includes a storage unit configured to store first mode information of the remote terminal, the first mode information indicating that the remote terminal is in the first mode.

[0153] In some implementations of the seventeenth aspect, in conjunction with the seventeenth aspect, the apparatus further includes a storage unit configured to store the downlink data.

[0154] In some implementations of the seventeenth aspect, in conjunction with the seventeenth aspect, the apparatus further includes a transceiver configured to receive first configuration information from the remote terminal, the first configuration information including a bandwidth part (BWP) and / or an unlicensed spectrum; and transmit the downlink data to the remote terminal according to the first configuration information.

[0155] The explanations and advantages of the related contents of the apparatus of the communication provided in the seventeenth aspect can refer to the method shown in the seventh aspect, which will not be repeated here.

[0156] In an eighteenth aspect, a communication apparatus is provided, which includes units for performing the method shown in the eighth aspect above. The communication apparatus can be a remote terminal, or a chip or circuit arranged in the remote terminal, which is not limited in the present application.

[0157] The communication apparatus includes:

[0158] The transceiver is configured to receive third information from the relay terminal, the third information indicating that there is downlink data of the remote terminal; and the processing unit is configured to establish a user plane connection according to the third information, the user plane connection being used to transmit the downlink data; wherein the remote terminal is a terminal connected to a network device or a target terminal through the relay terminal.

[0159] In some implementations of the eighteenth aspect, in conjunction with the eighteenth aspect, the transceiver is further configured to receive third information from the relay terminal, the first mode indicating that only a function of receiving PC5 interface signaling is enabled or a function of receiving PC5 interface data is not enabled.

[0160] With reference to the eighteenth aspect, in some implementations of the eighteenth aspect, the apparatus further includes a processing unit, configured to switch from the first mode to a second mode according to the third information, the second mode being used to represent that the function of receiving PC5 interface data is turned on.

[0161] With reference to the eighteenth aspect, in some implementations of the eighteenth aspect, the apparatus further includes a processing unit, configured to enter the first mode when there is no data transmission of the remote terminal within a preset time length.

[0162] With reference to the eighteenth aspect, in some implementations of the eighteenth aspect, the apparatus further includes a transceiver, configured to send first mode information to the relay terminal, the first mode information being used to represent that the remote terminal is in the first mode.

[0163] With reference to the eighteenth aspect, in some implementations of the eighteenth aspect, the method further includes receiving, by the transceiver, fourth information from the relay terminal, the fourth information being used to trigger the remote terminal to enter the first mode; and entering, by the processing unit, the first mode according to the fourth information.

[0164] With reference to the eighteenth aspect, in some implementations of the eighteenth aspect, the method further includes sending, by the transceiver, first configuration information to the relay terminal, the first configuration information being used for the relay terminal to send downlink data, the first configuration information including a bandwidth part (BWP) and / or an unlicensed spectrum; and receiving, by the transceiver, the downlink data from the relay terminal.

[0165] The explanations and beneficial effects of the related content of the communication apparatus provided in the eighteenth aspect can refer to the method shown in the eighth aspect, and will not be repeated here.

[0166] The nineteenth aspect provides a communication apparatus, including units for performing the method shown in the ninth aspect, the communication apparatus can be a relay terminal, or can be a chip or circuit arranged in the relay terminal, and the present application does not make any limitation in this regard.

[0167] The communication apparatus includes:

[0168] The transceiver is configured to receive fifth information from the remote terminal, the fifth information being used to notify that there is uplink data of the remote terminal; and the processing unit is configured to establish a user plane connection according to the fifth information, the user plane connection being used to transmit the uplink data; wherein the remote terminal is a terminal connected to a network device or a target terminal through the relay terminal.

[0169] In some implementations of the nineteenth aspect, the transceiver is further configured to receive the fifth information from the remote terminal, and the first mode is configured to represent only enabling a function of receiving PC5 interface signaling or disabling a function of receiving PC5 interface data.

[0170] In some implementations of the nineteenth aspect, the apparatus further includes a processing unit configured to switch from the first mode to a second mode according to the fifth information, and the second mode is configured to represent enabling the function of receiving PC5 interface data.

[0171] In some implementations of the nineteenth aspect, the apparatus further includes a processing unit configured to enter the first mode when the relay terminal does not receive the uplink data transmission from the remote terminal within a preset time period.

[0172] In some implementations of the nineteenth aspect, the apparatus further includes a transceiver configured to send second mode information to the remote terminal, and the second mode information is configured to represent that the relay terminal is in the first mode.

[0173] In some implementations of the nineteenth aspect, the apparatus further includes a transceiver configured to receive sixth information from the remote terminal, and the sixth information is configured to trigger the relay terminal to enter the first mode; and a processing unit configured to enter the first mode according to the sixth information.

[0174] In some implementations of the nineteenth aspect, the apparatus further includes a transceiver configured to send second configuration information to the remote terminal, and the second configuration information is configured to be used by the remote terminal to send the uplink data, and the second configuration information includes a bandwidth part (BWP) and / or an unlicensed spectrum; and a transceiver configured to receive the uplink data from the remote terminal.

[0175] The explanations and advantages of the related content of the apparatus of the communication provided in the nineteenth aspect can refer to the method shown in the ninth aspect, which will not be repeated here.

[0176] The twentieth aspect provides a communication apparatus, which includes units for performing the method shown in the twentieth aspect, and the communication apparatus can be a remote terminal, or a chip or circuit arranged in the remote terminal, which is not limited in the present application.

[0177] The communication apparatus includes:

[0178] The processing unit is configured to determine that there is uplink data for the remote terminal; and the transceiver is configured to send fifth information to the relay terminal, the fifth information being used to notify the relay terminal that there is uplink data, wherein the relay terminal is in a first mode, the first mode being used to represent that only a function of receiving PC5 interface signaling is enabled or a 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 the relay terminal.

[0179] With reference to the twentieth aspect, in some implementations of the twentieth aspect, the apparatus further includes a processing unit, configured to determine that the relay terminal is in the first mode.

[0180] With reference to the twentieth aspect, in some implementations of the twentieth aspect, the transceiver is further configured to receive second mode information from the relay terminal, the second mode information being used to represent that the relay terminal is in the first mode.

[0181] With reference to the twentieth aspect, in some implementations of the twentieth aspect, the transceiver is further configured to send sixth information to the relay terminal if there is no uplink data transmission for the remote terminal within a preset time length, the sixth information being used to trigger the relay terminal to enter the first mode.

[0182] With reference to the twentieth aspect, in some implementations of the twentieth aspect, the apparatus further includes a storage unit, configured to store second mode information of the relay terminal, the second mode information being used to represent that the relay terminal is in the first mode.

[0183] With reference to the twentieth aspect, in some implementations of the twentieth aspect, the apparatus further includes a transceiver, further configured to receive second configuration information from the relay terminal, the second configuration information including a bandwidth part (BWP) and / or an unlicensed spectrum; and the transceiver is further configured to send uplink data to the relay terminal according to the second configuration information.

[0184] The explanations and advantages of the related content of the apparatus of the communication provided in the twentieth aspect can be referred to the method shown in the tenth aspect, which will not be repeated here.

[0185] The twenty-first aspect provides a communication apparatus, including: a memory configured to store a program; and at least one processor configured to execute the computer program or instructions stored in the memory to perform the method of any possible implementation of the first aspect to the tenth aspect.

[0186] In an implementation, the apparatus is a terminal device.

[0187] In another implementation, the apparatus is a chip, a chip system or a circuit used in a terminal device.

[0188] In a twentieth aspect, this application provides a processor for performing the methods provided in the foregoing aspects.

[0189] Unless otherwise specified, or if it does not contradict its actual function or internal logic in the relevant description, the transmission and acquisition / reception operations involved in the processor can be understood as processor output and reception, input and other operations, or as transmission and reception operations performed by radio frequency circuits and antennas. This application does not limit them in this regard.

[0190] In a twenty-third aspect, a computer-readable storage medium is provided that stores program code for execution by a device, the program code including a method for performing any of the possible implementations of the first to tenth aspects described above.

[0191] In a twenty-fourth aspect, a computer program product comprising instructions is provided, which, when run on a computer, causes the computer to perform a method of any one of the possible implementations of the first to tenth aspects described above.

[0192] In a twenty-fifth aspect, a chip is provided, the chip including a processor and a communication interface, wherein the processor reads instructions stored in a memory through the communication interface and executes a method of any one of the possible implementations of the first to tenth aspects described above.

[0193] Optionally, as one implementation, the chip also includes a memory storing computer programs or instructions, and a processor is used to execute the computer programs or instructions stored in the memory. When the computer programs or instructions are executed, the processor is used to perform the method of any of the possible implementations of the first to tenth aspects described above.

[0194] In a twenty-sixth aspect, a system for switching transmission modes is provided, including the relay terminal and the remote terminal mentioned above. Attached Figure Description

[0195] FIG. 1 A schematic diagram of a network architecture is shown.

[0196] FIG. 2 A schematic diagram of a communication method 200 provided in an embodiment of this application is shown.

[0197] FIG. 3 This illustration shows another communication method 300 provided in an embodiment of this application.

[0198] FIG. 4 A schematic flowchart of another communication method 400 provided in an embodiment of this application is shown.

[0199] FIG. 5A schematic flow chart of another communication method 500 is shown.

[0200] FIG. 6 A schematic flow chart of another communication method 600 is shown.

[0201] FIG. 7 A schematic block diagram of a communication apparatus 700 is shown.

[0202] FIG. 8 A schematic block diagram of another communication apparatus 800 is shown.

[0203] FIG. 9 A schematic diagram of a chip system 900 is shown. DETAILED DESCRIPTION

[0204] The technical solutions in the present application will be described below with reference to the drawings.

[0205] The technical solutions provided by the present application can be applied to various communication systems, for example: a 5th generation (5G) or new radio (NR) system, a long term evolution (LTE) system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD) system, etc. The technical solutions provided by the present application can also be applied to future communication systems, such as a 6th generation mobile communication system. The technical solutions provided by the present application can also be applied to device to device (D2D) communication, vehicle-to-everything (V2X) communication, machine to machine (M2M) communication, machine type communication (MTC), and internet of things (IoT) communication systems or other communication systems.

[0206] First, a network architecture suitable for the present application is briefly introduced.

[0207] As an example, FIG. 1 A schematic diagram of a network architecture is shown.

[0208] As FIG. 1 shown, the network architecture is a 5G system (the 5 thFor example, a 5G network architecture of a 5G generation system (5GS). The network architecture can include three parts, respectively, a UE part, a data network (DN) part, and an operator network part. Among them, the operator network can include one or more of the following network elements: (radio) access network ((R)AN) device, user plane function (UPF) network element, authentication server function (AUSF) network element, unified data repository (UDR) network element, access and mobility management function (AMF) network element, SMF network element, network exposure function (NEF) network element, network repository function (NRF) network element, policy control function (PCF) network element, unified data management (UDM) network element, and application function (AF) network element. Among the above operator network, except for the RAN part, the part can be referred to as the core network part. In this application, the user equipment, (radio) access network device, 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 element, AF network element are simply referred to as UE, (R)AN device, UPF, AUSF, UDR, AMF, SMF, NEF, NRF, PCF, UDM, AF, respectively.

[0209] The following briefly describes each network element involved in the present application. FIG. 1 The following briefly describes each network element involved in the present application.

[0210] 1、UE

[0211] 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 layer signaling (NAS).

[0212] The UE in the embodiments of the present application can also be referred to as a terminal device, a user, an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user equipment. The UE can be a cellular phone, a smart watch, a wireless data card, a handset, a tablet computer, a personal digital assistant (PDA) computer, a wireless modem, a handheld device, a laptop computer, a machine type communication (MTC) terminal, a computer with wireless transceiver function, an internet of things terminal, a virtual reality terminal device, an augmented reality terminal device, a wearable device, a vehicle, a terminal in device-to-device (D2D) communication, a terminal in vehicle to everything (V2X) communication, a terminal in machine type communication (MTC), a terminal in internet of things (IOT), a terminal in smart office, a terminal in industrial control, a terminal in unmanned flight, a terminal in remote surgery, a terminal in smart grid, a terminal in transportation safety, a terminal in smart city, a terminal in smart home, a terminal in satellite communication (for example, a satellite phone or a satellite terminal), and the like. The UE can also be a customer premises equipment (CPE), a phone, a router, a network switch, a residential gateway (RG), a set-top box, a fixed mobile convergence product, a home network adapter, and an internet access gateway.

[0213] The embodiments of the present application do not limit specific technologies and specific device forms adopted by the UE.

[0214] 2, (R)AN device

[0215] The (R)AN device can provide the function of providing access to the communication network for authorized users in a specific area, and can specifically include a wireless network device in a 3rd generation partnership project (3GPP) network, and can also include an access point in a non-3GPP (non-3GPP) network. In the following, the AN device is used for convenience of description.

[0216] AN device can be of different radio access technologies. There are two types of current radio access technologies: 3GPP radio access technology (e.g., radio access technology adopted in third generation (3G), fourth generation (4G) or 5G system) and non-3GPP radio access technology. 3GPP radio access technology refers to access technology conforming to 3GPP standard specification, for example, access network device in 5G system is called next generation Node Base station (gNB) or RAN device. Non-3GPP radio access technology can include air interface technology represented by access point (AP) in wireless fidelity (WiFi), worldwide interoperability for microwave access (WiMAX), code division multiple access (CDMA) and the like. AN device can allow terminal device and 3GPP core network to be interconnected and communicated by using non-3GPP technology.

[0217] AN device can be responsible for functions such as radio resource management on the air interface side, quality of service (QoS) management, data compression and encryption. AN device provides access service for terminal device, and then completes the forwarding of control signals and user data between terminal device and core network.

[0218] The AN device may include, but is not limited to, a macro base station, a micro base station (also referred to as a small station), a radio network controller (RNC), a Node B (NB), a base station controller (BSC), a base transceiver station (BTS), a home base station (for example, a home evolved NodeB or home Node B, HNB), a baseband unit (BBU), an AP in a WiFi system, a base station (BS) in WiMAX, a wireless relay node, a wireless backhaul node, a transmission point (TP), a transmission and reception point (TRP), and the like, and can also be a gNB or a transmission point (TRP or TP) in a 5G (for example, NR) system, one or a group of antenna panels (including multiple antenna panels) of a base station in a 5G system, or a network node constituting a gNB or a transmission point, such as a distributed unit (DU), or a base station in a next-generation communication 6G system, and the like.

[0219] The embodiments of the present application do not limit the specific technology and specific device form adopted by the AN device.

[0220] 3. UPF

[0221] The UPF mainly provides user plane functions such as forwarding, processing, connection with a DN, a session anchor, quality of service (QoS) policy implementation, and the like. 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. The UPF can also receive user plane data from the terminal device through the AN device and forward the user plane data to the DN.

[0222] 4. DN

[0223] The DN is mainly used for an operator network that provides data services for the UE. For example, the Internet, a third-party service network, an IP multi-media service (IMS) network, and the like.

[0224] 5. AUSF

[0225] The AUSF is mainly used for user authentication and the like.

[0226] 6. UDR

[0227] UDR primarily provides storage capabilities for contract data, policy data, and capability-related data.

[0228] 7. AMF

[0229] AMF is mainly used for functions such as access control, mobility management, attach and detach.

[0230] 8. SMF

[0231] SMF is primarily responsible for session management (such as session establishment, modification, and release), Internet Protocol (IP) address allocation and management, and UPF selection and control.

[0232] 9. NEF

[0233] The NEF is primarily used to securely expose services and capabilities provided by 3GPP network functions to the outside world.

[0234] 10. NRF

[0235] NRF is primarily used to store information about network functional entities and the services they provide.

[0236] 11. PCF

[0237] PCF is primarily used as a unified policy framework to guide network behavior, providing policy rule information to control plane network elements (such as AMF, SMF, etc.).

[0238] 12. UDM

[0239] UDM is mainly used for UE subscription data management, including the storage and management of UE identifiers and UE access authorization.

[0240] 13. AF

[0241] AF is mainly used to provide services to 3GPP networks, such as interacting with PCF for policy control.

[0242] exist FIG. 1 In the network architecture shown, network elements can communicate with each other via interfaces. These interfaces can be point-to-point or service-oriented; this application does not impose any restrictions.

[0243] It should be understood that the network architecture shown above is merely an illustrative example, and the network architecture applicable to the embodiments of this application is not limited thereto. Any network architecture capable of realizing the functions of the above-described network elements is applicable to the embodiments of this application.

[0244] It should also be understood that FIG. 1The AMF, SMF, UPF, PCF, UDM, AUSF, UDR, NEF, NRF, AF and the like functions or network elements shown in the middle can be understood as network elements for implementing different functions, for example, can be combined into a network slice as needed. These network elements can be independent devices, or can be integrated into the same device to implement different functions, or can be network elements in a hardware device, or can be software functions running on a dedicated hardware, or be virtualized functions instantiated on a platform (for example, a cloud platform), and the specific form of the network elements is not limited in the present application.

[0245] It should also be understood that the above naming is only defined for the convenience of distinguishing different functions and should not constitute any limitation on the present application. The present application does not exclude the possibility of using other names in 6G networks and other future networks. For example, in 6G networks, part or all of the above network elements can use the terms in 5G, or other names, etc.

[0246] For the convenience of understanding the embodiments of the present application, the terms or technologies involved in the present application are simply explained.

[0247] 1, PC5 communication: a communication mode based on the PC5 interface between UEs, that is, using the direct link between UEs for communication, without going through the operator network (for example, base station). The direct link can be referred to as PC5 link or PC5 connection or Layer-2 link, for example.

[0248] 2, Discontinuous Reception (DRX): when in idle state, the UE receives paging information in DRX mode to reduce power consumption. The location of the paging information on the air interface is fixed. In each DRX cycle, the UE only listens to the wireless channel at the paging occasion (PO) time slot, reads the paging message, and checks whether there is downlink traffic. The DRX cycle value range is: 1.28s, 2.56s, 5.12s or 10.24s. During the UE registration process, the UE and the AMF can negotiate the length of the DRX cycle, and the value issued by the AMF to the UE is final. The PO can be calculated by the UE identifier (5G temporary mobile subscription identifier), the DRX cycle and the number of POs in the DRX cycle.

[0249] 3. Extended Discontinuous Reception (eDRX): further save terminal power consumption while meeting certain downlink service latency requirement. In each eDRX cycle, there is a Paging Time Window (PTW), UE only listens to the wireless channel in the PTW according to the DRX cycle to read the paging message. Outside the PTW, it is in sleep state and does not listen to the wireless channel. If the 5G core network receives a downlink data packet outside the PTW window, it will cache the data packet, and 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. In the UE registration process, the UE and the AMF can negotiate the eDRX cycle length and the PTW length, and the value issued by the AMF to the UE is used as the standard.

[0250] 4. Mobile Initiated Connection Only (MICO) mode: for scenarios without downlink service latency requirement, MICO can be used to further save terminal power consumption. UE enters power saving mode (PSM) / MICO mode, turns off the receiver and no longer receives downlink messages. The network side cannot actively contact the UE. Only when the UE needs to send uplink data or needs to perform periodic location update, it will be actively awakened to perform uplink service process.

[0251] It should be pointed out that the above terms or technologies belong to the prior art and are not limited.

[0252] It can be understood that the term "and / or" in this paper is only a description of the association relationship between the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents an "or" relationship between the associated objects before and after it.

[0253] The above briefly describes the terms involved in the present application, which will not be repeated in the following embodiments. The communication method provided by the embodiments of the present application will be described in detail with reference to the accompanying drawings. The embodiments provided by the present application can be applied to the network architecture shown in the above FIG. 1 The network architecture shown in the above

[0254] FIG. 2 is a schematic diagram of a communication method 200 provided by an embodiment of the present application. The method 200 can include the following steps.

[0255] S201, the relay terminal determines the first PC5 DRX parameter.

[0256] The first PC5 DRX parameter can be used for PC5 communication between the remote terminal and the relay terminal. Specifically, the first PC5 DRX parameter can include a first PC5 DRX cycle and a first reception window length.

[0257] The first PC5 DRX cycle can be a sum of a wake-up time and a sleep time; and the first reception window length can represent a time length of the wake-up time, which can also be referred to as an active time.

[0258] The remote terminal can be connected to a network or a target terminal through the relay terminal. The relay terminal and the remote terminal can establish a communication connection based on a PC5 interface, which can be referred to as a PC5 connection, and the relay terminal and the remote terminal can communicate based on the communication connection, i.e., PC5 communication.

[0259] In addition, if the remote terminal is connected to the target terminal through the relay terminal, the remote terminal can also be referred to as a source terminal, i.e., the source terminal communicates with the target terminal through the relay terminal.

[0260] S202, the relay terminal sends first information to the remote terminal.

[0261] Correspondingly, the remote terminal receives the first information from the relay terminal.

[0262] The first information can be used to notify (or indicate) the first PC5 DRX parameter to the remote terminal. Specifically, the first information can be first indication information used to indicate the first PC5 DRX parameter; or the first information can also be the first PC5 DRX parameter.

[0263] Specifically, the first indication information can be a PC5 DRX mode, which can be used by the remote terminal to determine the first PC5 DRX parameter, in other words, the remote terminal can determine the first PC5 DRX parameter according to the PC5 DRX mode; or the first indication information can also be information containing the PC5 DRX mode, which is not limited.

[0264] Optionally, the relay terminal sends the first information to the remote terminal through a PC5 signaling (PC5-Signalling, PC5-S) message, i.e., carries the first information in the PC5-S message. Specifically, the PC5-S message can be a PC5 link establishment request message or a PC5 link modification request message.

[0265] S203, the remote terminal receives information from the relay terminal according to the first PC5 DRX parameter.

[0266] The information from the relay terminal can be signaling (e.g., a PC5 signaling message) or data (e.g., service data or downlink data forwarded by the relay terminal, without limitation).

[0267] In one example, the remote terminal receives the information from the relay terminal in the first PC5 DRX cycle in a length of the reception window in step S203.

[0268] In another example, the remote terminal receives the information from the relay terminal in the first PC5 DRX cycle in an active time or wake-up time in step S203. The remote terminal stops receiving the information from the relay terminal in a 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.

[0269] With the method provided in the above examples, the relay terminal determines the first PC5 DRX parameter, sends the first information to the remote terminal, informs the remote terminal of the first PC5 DRX parameter, and the remote terminal receives the information from the relay terminal according to the first PC5 DRX parameter. In the method, the remote terminal can learn the first PC5 DRX parameter for PC5 communication of the relay terminal 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. Further, compared with the case where the remote terminal and the relay terminal perform transmission according to a preset PC5 DRX parameter regardless of whether there is data transmission on the PC5 link, the remote terminal can perform PC5 communication according to the first PC5 DRX parameter determined based on the data transmission state of the relay terminal with the method provided in the above examples, avoiding the remote terminal from listening to a radio channel when there is no data transmission, and greatly reducing the energy consumption of the terminal.

[0270] Optionally, in one implementation scenario of the above examples, step S201 can be implemented in the following multiple ways.

[0271] Method one: The relay terminal determines the first PC5 DRX parameter 1 according to a DRX parameter of the relay terminal.

[0272] The DRX parameter of the relay terminal includes a DRX cycle of the relay terminal and a paging time of the relay terminal.

[0273] The paging time of the relay terminal is a time at which the relay terminal receives a paging message.

[0274] In a possible implementation, the relay terminal can 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 reception window length in the first PC5 DRX parameter 1 according to the paging moment of the relay terminal. For example, the first PC5 DRX cycle is equal to the DRX cycle of the relay terminal, and the first reception window length 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 first reception window length is equal to the time slot length of the paging moment of the relay terminal plus a margin time, where the margin time represents the time for the relay terminal to process the paging message.

[0275] Optionally, after the relay terminal determines the first PC5 DRX parameter 1 according to the DRX parameter of the relay terminal, the method 200 further includes: when the relay terminal enters the idle state and receives downlink information by using the DRX parameter of the relay terminal, the relay terminal sends first information to the remote terminal.

[0276] It should be noted that the relay terminal entering the idle state in the present application can be the moment of entering the idle state, or any moment within a period of time after the relay terminal enters the idle state, that is, it can be understood that the relay terminal has entered the idle state, and is not limited.

[0277] The reception of the downlink information by using the DRX parameter of the relay terminal can be understood as: the relay terminal receives the downlink data or the paging message according to the paging moment within the DRX cycle of the relay terminal, and is not limited.

[0278] Method two: the relay terminal determines the first PC5 DRX parameter 2 according to the eDRX parameter of the relay terminal.

[0279] The eDRX parameter of the relay terminal can be used for the relay terminal to receive data from the network device, and can specifically include an eDRX cycle and a paging time window (PTW) length of eDRX.

[0280] In a possible implementation, 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 determines the first reception window length in the first PC5 DRX parameter 2 according to the PTW length of the relay terminal. For example, the first PC5 DRX cycle is equal to the eDRX cycle of the relay terminal, and the first reception window length is equal to the PTW length of the relay terminal, and is not limited. For another example, the first PC5 DRX cycle is an integer multiple of the eDRX cycle of the relay terminal, and the first reception window length is equal to the PTW length of the relay terminal plus a margin time, where the margin time represents the time for the relay terminal to process the paging message.

[0281] Optionally, after the relay terminal determines the first PC5 DRX parameter 2 according to the eDRX parameter of the relay terminal, the method 200 further includes: when the relay terminal enters an idle state and receives downlink information using the eDRX parameter, the relay terminal sends the first information to the remote terminal.

[0282] Wherein, receiving the downlink information using the eDRX parameter of the relay terminal can be understood as: the relay terminal receives the downlink data or the paging message according to the PTW length within the eDRX cycle of the relay terminal, without limitation.

[0283] Method three: the relay terminal determines the first PC5 DRX parameter 3 according to the keep-alive timing cycle.

[0284] Wherein, the keep-alive timing cycle is a cycle in which the relay terminal sends keep-alive signaling, and the keep-alive timing cycle is used to maintain the PC5 link between the relay terminal and the remote terminal.

[0285] In a possible implementation, 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 determines the first receiving window length according to the second receiving window length in the second PC5 DRX parameter 3. For example, the first PC5 DRX cycle is equal to the keep-alive timing cycle or an integer multiple of the keep-alive timing cycle, without limitation. For another example, the first receiving window length is the same as the second receiving window length.

[0286] Optionally, after the relay terminal determines the first PC5 DRX parameter 3 according to the keep-alive timing cycle, the method 200 further includes: when the relay terminal enters the MICO mode, the relay terminal sends the first information to the remote terminal.

[0287] It should be noted that the relay terminal entering the MICO mode in the present application can be the time of entering the MICO mode; or can be any time within a period of time after entering the MICO mode, i.e., it can be understood that the relay terminal has entered the MICO mode, without limitation.

[0288] Method four: the relay terminal determines the first PC5 DRX parameter 4 according to the service characteristics of the remote terminal.

[0289] Wherein, the service characteristics can be a service arrival cycle or a service arrival duration, and the service arrival duration can be used to represent the duration of the service arrival within the service arrival cycle; or the service characteristics can also be a delay tolerance value of the remote terminal to the downlink service, which can be understood as the maximum delay of the downlink service transmission, without limitation.

[0290] In a possible implementation, the relay terminal determines the first PC5 DRX cycle in the first PC5 DRX parameter 4 according to the service arrival period, and determines the first reception window length in the first PC5 DRX parameter 4 according to the service arrival duration. For example, the first PC5 DRX cycle is equal to the service arrival period, and the first reception window length is equal to the service arrival duration. For another example, the first PC5 DRX cycle is equal to an integer multiple of the service arrival period, and the first reception window length is equal to the service arrival duration plus a margin time, which represents a time for the relay terminal to process service data, which is not limited.

[0291] In a possible implementation, 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 reception window length in the first PC5 DRX parameter 5 according to the second reception window length. For example, the first PC5 DRX cycle is equal to the second PC5 DRX cycle, and the first reception window length is equal to the second reception window length. For another example, the first PC5 DRX cycle is equal to an integer multiple of the service arrival period, and the first reception window length is equal to the service arrival duration plus a margin time, which represents a time for the relay terminal to process service data, which is not limited.

[0292] The second PC5 DRX parameter is used for PC5 communication between the target terminal and the relay terminal.

[0293] The second PC5 DRX parameter can include a second PC5 DRX cycle and a second reception window length.

[0294] In a possible implementation, 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 reception window length in the first PC5 DRX parameter 5 according to the second reception window length. For example, the first PC5 DRX cycle is equal to the second PC5 DRX cycle, and the first reception window length is equal to the second reception window length. For another example, the first PC5 DRX cycle is equal to an integer multiple of the service arrival period, and the first reception window length is equal to the service arrival duration plus a margin time, which represents a time for the relay terminal to process service data, which is not limited.

[0295] 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 the relay terminal receives information of the target terminal by using the second PC5 DRX parameter, the relay terminal sends first information to the remote terminal.

[0296] It should be understood that there is no data transmission between the relay terminal and the target terminal can be that there is no data transmission between the relay terminal and the target terminal within a period of time, which is not limited.

[0297] The receiving of the information of the target terminal by using the first PC5 DRX parameter 5 can be that the relay terminal receives data or signaling sent by the target terminal according to the first reception window length within the first PC5 DRX cycle, which is not limited.

[0298] It should be noted that the above various implementation manners can be combined with each other, or independent of each other, and are not limited.

[0299] In addition, the various implementation manners of determining the first PC5 DRX parameter can correspond to different PC5 DRX modes, as shown in Table 1.

[0300] Table 1 Correspondence between first PC5 DRX parameter and PC5 DRX mode

[0301] Implementation of S201 PC5 DRX mode First PC5 DRX parameter Method one PC5 DRX mode 1 First PC5 DRX parameter 1 Method two PC5 DRX mode 2 First PC5 DRX parameter 2 Method three PC5 DRX mode 3 First PC5 DRX parameter 3 Method four PC5 DRX mode 4 First PC5 DRX parameter 4 Method five PC5 DRX mode 5 First PC5 DRX parameter 5

[0302] 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 fine energy saving of the remote terminal in different states is realized. Further, compared with the remote terminal and the relay terminal both transmitting according to a specific first PC5 DRX parameter regardless of whether there is data transmission on the PC5 link, the method provided in the above embodiment avoids resource waste when there is no data transmission, thereby optimizing the first PC5 DRX parameter and saving energy for the remote terminal.

[0303] Optionally, in an implementation scenario of the above embodiment, the method 200 further includes: the relay terminal sending, to the remote terminal, a correspondence between the first PC5 DRX parameter and the PC5 DRX mode.

[0304] The correspondence between the first PC5 DRX parameter and the PC5 DRX mode can be one-to-one correspondence. For example, the correspondence is the correspondence between the PC5 DRX mode and the first PC5 DRX parameter in Table 1, including: the PC5 DRX mode 1 corresponds to the first PC5 DRX parameter 1, the PC5 DRX mode 2 corresponds to the first PC5 DRX parameter 2, and so on.

[0305] The correspondence 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.

[0306] Further, the remote terminal can obtain the first PC5 DRX parameter according to the correspondence and the first indication information.

[0307] Taking the correspondence between the first PC5 DRX parameter and the PC5 DRX mode as the correspondence in Table 1 above as an example, when the PC5 DRX mode received by the remote terminal is the PC5 DRX mode 1, the remote terminal obtains the first PC5 DRX parameter 1 according to the correspondence.

[0308] FIG. 3 The communication method 300 provided by the embodiments of the present application is shown in a schematic flowchart. The method 300 can include the following steps.

[0309] S301, the remote terminal determines whether there is a data reception requirement.

[0310] The data reception requirement can be understood as a requirement for receiving downlink data.

[0311] Optionally, the remote terminal can determine whether there is a data reception requirement according to the service type or service requirement transmitted through the relay terminal, for example, certain services such as location reporting services do not have a data reception requirement. For another example, certain services such as data reporting services of Internet of Things devices only have uplink data transmission requirements.

[0312] S302, the remote terminal sends first requirement indication information or second requirement indication information to the relay terminal.

[0313] The first requirement indication information is used to indicate that the remote terminal does not have a data reception requirement, and the second requirement indication information is used to indicate that the remote terminal has a data reception requirement.

[0314] It should be understood that when the remote terminal does not have a data reception requirement, the remote terminal sends the first requirement indication information to the relay terminal or does not send the second requirement indication information; when the remote terminal has a data reception requirement, the remote terminal sends the second requirement indication information to the relay terminal or does not send the first requirement indication information. Further, after the remote terminal determines whether there is a data reception requirement, the relay terminal is informed, FIG. 3 The method flowchart also includes:

[0315] S303, the relay terminal learns that all remote terminals corresponding to the relay terminal do not have a data reception requirement.

[0316] The data reception requirement can be understood as a requirement for receiving downlink data.

[0317] The remote terminals corresponding to the relay terminal include one or more terminals connected to the network through the relay terminal, such as FIG. 3 As shown by UE1 and UE2, in other words, one or more remote terminals access the network through the relay terminal. It should be understood that the plurality of remote terminals is at least two remote terminals.

[0318] It should be understood that when the remote terminal corresponding to the relay terminal is one terminal accessing the network through the relay terminal, if the remote terminal does not have a data reception requirement, the relay terminal learns that all remote terminals corresponding to the relay terminal do not have a data reception requirement.

[0319] It should also be understood that when the remote terminals corresponding to the relay terminal are multiple terminals, i.e., two or more terminals, accessing the network through the relay terminal, the relay terminal learns that all remote terminals corresponding to the relay terminal do not have data reception requirements only when all remote terminals do not have data reception requirements. 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 learn that all remote terminals corresponding to the relay terminal do not have data reception requirements.

[0320] Optionally, the relay terminal can determine whether there is a data reception requirement according to the service type or service requirement of the remote terminal, for example, some services such as location reporting services do not have data reception requirements.

[0321] S304, the relay terminal requests the network device to enter the MICO mode.

[0322] Specifically, the relay terminal can send a request message to the network device to request to enter the MICO mode, or can send a message in the prior art, for example, a registration request message, etc. The request message can carry information for requesting to enter the MICO mode, for example, MICO mode indication information, which is not limited.

[0323] The network device can be an AMF network element, and can also be a RAN device.

[0324] It should be understood that the relay terminal can perform step 304 only when the relay terminal learns that all remote terminals corresponding to the relay terminal do not have data reception requirements.

[0325] S305, the relay terminal receives a response message from the network device.

[0326] The response message can 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 can include indication information for indicating the relay terminal to enter the MICO mode. Specifically, the response message can be an existing message, for example, a registration request response message, or a new message, which is not limited.

[0327] It should be noted that the response message can be replaced by other messages having the function of indicating the relay terminal to enter the MICO mode, for example, a notification message, which is not limited.

[0328] S306, the relay terminal enters the MICO mode according to the response message.

[0329] It should be understood that the relay terminal enters the MICO mode after receiving the response message from the remote terminal.

[0330] With the method provided in the above embodiments, the remote terminal informs the relay terminal of whether there is a data receiving requirement, the relay terminal learns that all remote terminals corresponding to the relay terminal have no data receiving requirement, and then sends a request message to the network device to request entering the MICO mode. After receiving the response from the network device, the relay terminal enters the MICO mode. In this method, the relay terminal requests to enter the MICO mode after learning that all remote terminals corresponding to the relay terminal have no data receiving requirement, thereby avoiding that the UE still receives in a large resource pool / frequency bandwidth when there is no data transmission, and thus energy saving is effectively achieved. Further, the relay terminal determines whether to request to enter the MICO mode according to the downlink data receiving requirement of the remote terminal, so as to achieve energy saving between the relay terminal and the network communication as much as possible.

[0331] Optionally, in another implementation scenario of the above embodiment, step S303 comprises: the relay terminal learns that all remote terminals corresponding to the relay terminal have no data receiving requirement according to the first demand indication information and / or the second demand indication information.

[0332] The first demand indication information is used to indicate that the remote terminal has no data receiving requirement, and the second demand indication information is used to indicate that the remote terminal has data receiving requirement.

[0333] It should be understood that when the relay terminal receives the first demand indication information sent by all remote terminals, the relay terminal learns that all remote terminals corresponding to the relay terminal have no data receiving requirement. In other words, when the relay terminal receives at least one first demand indication information and one second demand indication information, the relay terminal cannot learn that all remote terminals corresponding to the relay terminal have no data receiving requirement. For example, the remote terminals corresponding to the relay terminal include UE1 and UE2, and UE1 and UE2 both send the first demand indication information to the relay terminal, so that the relay terminal learns that all remote terminals corresponding to the relay terminal have no data receiving 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, so that the relay terminal cannot learn that all remote terminals corresponding to the relay terminal have no data receiving requirement. It should be understood that the above is only an exemplary description, which is not limited.

[0334] It should also be understood that if the relay terminal does not receive the second demand indication information from all remote terminals corresponding to the relay terminal within a preset time length, the relay terminal learns that all remote terminals corresponding to the relay terminal have no data receiving requirement. In other words, as long as the relay terminal receives one second demand indication information, the relay terminal cannot learn that all remote terminals corresponding to the relay terminal have no data receiving requirement.

[0335] Based on the above scheme, the relay terminal requests to enter the MICO mode after learning that all the remote terminals corresponding to the relay terminal have no data reception requirement, thereby avoiding that the UE still receives in a large resource pool / frequency bandwidth when there is no data transmission, and effectively saving energy. Further, the relay terminal determines whether to request to enter the MICO mode according to the downlink data reception requirement of the remote terminal, thereby realizing energy saving between the relay terminal and network communication.

[0336] FIG. 4 is a schematic flowchart of a communication method 400 provided by an embodiment of the present application. The method 400 can include the following steps.

[0337] Optionally, S401, the remote terminal determines a DRX parameter of the remote terminal.

[0338] The DRX parameter of the remote terminal can include a DRX cycle of the remote terminal and a paging moment of the remote terminal.

[0339] It should be understood that the remote terminal can also determine the DRX parameter of the remote terminal in a manner known in the art, which is not limited.

[0340] S402, the remote terminal sends the DRX parameter of the remote terminal to the relay terminal.

[0341] Correspondingly, the relay terminal receives the DRX parameter of the remote terminal corresponding to the relay terminal.

[0342] The remote terminal corresponding to the relay terminal includes one or more terminals connected to the network through the relay terminal, such as FIG. 4 As shown by UE1 and UE2, in other words, one or more remote terminals access the network through the relay terminal.

[0343] It should be understood that the plurality of remote terminals in the present application is at least two remote terminals.

[0344] It should be understood that the relay terminal receiving the DRX parameter of the remote terminal corresponding to the relay terminal can be receiving the DRX parameter of one 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 can also be receiving the DRX parameter of at least one remote terminal in a plurality of remote terminals accessing the network through the relay terminal, in other words, the relay terminal can receive the DRX parameter of part of the remote terminals corresponding to the relay terminal, or receive the DRX parameter of all the remote terminals corresponding to the relay terminal.

[0345] S403, the relay terminal determines a DRX parameter of the relay terminal.

[0346] Specifically, when the relay terminal receives the DRX parameter of the remote terminal corresponding to the relay terminal, the relay terminal in S403 can determine the DRX parameter of the relay terminal according to the DRX parameter of the remote terminal.

[0347] Specifically, S403 can adopt multiple possible implementation manners for different number of remote terminals corresponding to the relay terminal, specifically as follows:

[0348] Firstly, the relay terminal corresponds to only one remote terminal, in other words, only one remote terminal connects to the network through the relay terminal.

[0349] When the relay terminal receives the DRX parameter of the remote terminal, the relay terminal in S403 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 moment of the relay terminal is the same as the paging moment of the remote terminal.

[0350] Secondly, the relay terminal corresponds to multiple remote terminals, in other words, multiple remote terminals connect to the network through the relay terminal.

[0351] When the relay terminal receives the DRX parameter of at least one remote terminal of the multiple 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 of the DRX cycles of the at least one remote terminal, and the paging moment of the relay terminal includes the paging moments of the at least one remote terminal, it should be understood that the paging moment of the relay terminal is the set of the paging moments of the multiple remote terminals. For another example, when the relay terminal receives the DRX parameter of one remote terminal of the multiple remote terminals, the relay terminal determines the DRX parameter of the relay terminal according to the DRX parameter of the one remote terminal.

[0352] It should be noted that the DRX parameter in the method 400 is taken as an example for description, and the DRX parameter in the method 400 can be replaced by an eDRX parameter. The eDRX parameter of the remote terminal can include the eDRX cycle of the remote terminal and the PTW length of the eDRX.

[0353] In the embodiment in which the DRX parameter in the method 400 can be replaced by the eDRX parameter, S403 can adopt multiple possible implementation manners for different number of remote terminals corresponding to the relay terminal, as follows:

[0354] Firstly, the relay terminal corresponds to only one remote terminal.

[0355] When the relay terminal receives the eDRX parameter of the remote terminal, the relay terminal determines the eDRX parameter of the relay terminal according to the eDRX parameter of the remote terminal in S403. 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 the length of the paging time window of the remote terminal.

[0356] In the second case, the relay terminal corresponds to multiple remote terminals, in other words, the multiple remote terminals are connected to the network through the relay terminal.

[0357] When the relay terminal receives the eDRX parameter of at least one remote terminal of the multiple remote terminals, the relay terminal determines the eDRX parameter of the relay terminal according to the DRX parameter of the at least one remote terminal in S403. For example, the eDRX cycle of the relay terminal is the minimum value of the eDRX cycles of the at least one remote terminal, and the length of the paging time window of the relay terminal includes the lengths of the paging time windows of the at least one remote terminal, and it should be understood that the length of the paging time window of the relay terminal is the sum of the lengths of the paging time windows of the multiple remote terminals. For another example, when the relay terminal receives the eDRX parameter of one remote terminal of the multiple remote terminals, the relay terminal determines the eDRX parameter of the relay terminal according to the eDRX parameter of the one remote terminal.

[0358] It should be noted that the above is only an example, and the determination of the DRX parameter of the relay terminal or the eDRX parameter of the relay terminal is not limited.

[0359] Based on the above scheme, the relay terminal determines the DRX parameter or the eDRX parameter of the relay terminal by learning the downlink transmission delay of the remote terminal corresponding to the relay terminal, avoids that the UE still listens to the wireless channel in a large resource pool / frequency bandwidth when there is no data transmission, and thus effectively saves energy. Further, the relay terminal considers the downlink transmission delay / downlink data reception requirement of the remote terminal, thereby achieving energy saving between the relay terminal and the network communication.

[0360] FIG. 5 FIG. 5 is a schematic flowchart of a communication method 500 provided by an embodiment of the present application. The method 500 can include the following steps.

[0361] S501, the relay terminal receives downlink data of a remote terminal.

[0362] The remote terminal is a terminal connected to a network device or a target terminal through the relay terminal.

[0363] It should be understood that the relay terminal receives the downlink data of the remote terminal from the network device or the target terminal.

[0364] 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.

[0365] It should be understood that the remote terminal is in the first mode.

[0366] The first mode can be used to represent (or indicate) that only the function of receiving PC5 interface signaling or the function of not receiving PC5 interface data is enabled on the PC5 communication connection between the remote terminal and the relay terminal, or that the remote terminal does not listen to the radio channel 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 can not be in the first mode. The PC5 interface signaling represents signaling messages transmitted through the PC5 interface. The PC5 interface data represents service data transmitted through the PC5 interface.

[0367] It should be understood that the function of only receiving PC5 interface signaling can refer to being in a PC5 interface signaling receiving mode or a PC5 interface signaling receiving state, can also refer to being able to only receive PC5 interface signaling, and can also refer to being in a PC5 interface idle state.

[0368] S502, the relay terminal sends third information to the remote terminal.

[0369] The third information can be used to notify that there is downlink data of the remote terminal, i.e., to notify the remote terminal that there is downlink data to be received.

[0370] The third information can be indication information indicating that the remote terminal establishes a user plane connection, or can be indication information indicating that the remote terminal switches from the first mode to the second mode.

[0371] Optionally, the third information can be sent through a PC5 link modification message.

[0372] It should be understood that the user plane connection is used to transmit the downlink data.

[0373] It should be understood that the second mode is used to represent that the function of receiving PC5 interface data is enabled on the PC5 communication connection between the remote terminal and the relay terminal, or to represent that the remote terminal listens to the radio channel 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 can not be in the first mode.

[0374] It should be understood that the function of receiving PC5 interface data can refer to being in a PC5 interface data receiving mode or state, or can refer to being in a PC5 interface connection state.

[0375] S503, the remote terminal establishes or resumes a user plane connection according to the third information, and switches from the first mode to the second mode.

[0376] After receiving the third information, the remote terminal learns 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 starts to prepare to receive the downlink data.

[0377] Optionally, in another implementation scenario of the above embodiment, the method 500 further includes: S504, the relay terminal learns that the remote terminal is in the first mode.

[0378] Specifically, the relay terminal learns that the remote terminal is in the first mode in the following ways.

[0379] The first way is that the relay terminal receives 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.

[0380] Specifically, if the remote terminal has no data transmission within a preset time length, the remote terminal enters the first mode, and when the remote terminal enters the first mode, the remote terminal sends first mode information to the relay terminal, where the first mode information is used to represent (or notify) that the remote terminal is in the first mode.

[0381] The first mode information can be state information of the remote terminal, which is not limited.

[0382] The second way is that 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.

[0383] Specifically, if the relay terminal has not received downlink data of the remote terminal within a preset time length, 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, and the remote terminal enters the first mode according to the fourth information.

[0384] The second information can be indication information indicating that the remote terminal enters the first mode, or can be notification information notifying that the remote terminal enters the first mode.

[0385] It should be understood that the relay terminal has not received downlink data of the remote terminal can mean that the remote terminal has no data transmission, which is not limited.

[0386] Optionally, if the remote terminal is connected to a target terminal through the relay terminal, the remote terminal can also be referred to as a source terminal. The source terminal communicates with the target terminal through the relay terminal.

[0387] Optionally, in another implementation scenario of the above embodiment, the method 500 further includes: S505, the relay terminal stores first mode information of the remote terminal.

[0388] The first mode information is used to indicate that the remote terminal is in the first mode.

[0389] Optionally, the relay terminal stores the first mode information in a context of a PC5 link between the remote terminal and the relay terminal.

[0390] Optionally, in another implementation scenario of the above embodiment, the method 500 further includes: S506, the relay terminal stores the downlink data of the remote terminal.

[0391] Optionally, in another implementation scenario of the above embodiment, the method 500 further includes: S506, the relay terminal stores the downlink data of the remote terminal.

[0392] Optionally, in another implementation scenario of the above embodiment, the method 500 further includes: S506, the relay terminal stores the downlink data of the remote terminal.

[0393] Optionally, in another implementation scenario of the above embodiment, the method 500 further includes: S507, the remote terminal sends first configuration information to the relay terminal.

[0394] Optionally, in another implementation scenario of the above embodiment, the method 500 further includes: S507, the remote terminal sends first configuration information to the relay terminal.

[0395] Optionally, in another implementation scenario of the above embodiment, the method 500 further includes: S507, the remote terminal sends first configuration information to the relay terminal.

[0396] Optionally, in another implementation scenario of the above embodiment, the method 500 further includes: S508, the relay terminal sends the downlink data to the remote terminal.

[0397] Optionally, in another implementation scenario of the above embodiment, the method 500 further includes: S508, the relay terminal sends the downlink data to the remote terminal.

[0398] Optionally, in another implementation scenario of the above embodiment, the method 500 further includes: S508, the relay terminal sends the downlink data to the remote terminal.

[0399] Optionally, in another implementation scenario of the above embodiment, the method 500 further includes: S508, the relay terminal sends the downlink data to the remote terminal.

[0400] Based on the above scheme, when the remote terminal has no data transmission, the remote terminal only receives the PC5 signaling, and when the remote terminal has data transmission, the remote terminal enables the function of receiving the PC5 interface data, thereby avoiding the energy waste caused by still listening to the frequency resources related to data transmission, and effectively saving energy. Further, the relay terminal considers the downlink transmission delay of the remote terminal / downlink data reception requirement, and realizes energy saving between the relay terminal and network communication.

[0401] FIG. 6 is a schematic flowchart of a communication method 600 provided by an embodiment of the present application. The method 600 can include the following steps.

[0402] S601, the remote terminal determines that there is uplink data.

[0403] The remote terminal is a terminal connected to a network device or a target terminal through the relay terminal.

[0404] It should be understood that the remote terminal determining that there is uplink data can be that the remote terminal receives the uplink data from an application layer, without limitation.

[0405] Optionally, the remote terminal further determines that the uplink data needs to be transmitted through a PC5 link between the remote terminal and the relay terminal.

[0406] S602, the remote terminal sends fifth information to the relay terminal.

[0407] It should be understood that the relay terminal is in a first mode.

[0408] The first mode is used to represent (or indicate) that the remote terminal and the relay terminal are only enabled to receive PC5 interface signaling or are not enabled to receive PC5 interface data on a PC5 communication connection, in other words, the communication between the remote terminal and other relay terminals can not be in the first mode.

[0409] It should be understood that the function of only enabling to receive PC5 interface signaling can refer to being in a PC5 interface signaling receiving mode or state, can also refer to only receiving PC5 interface signaling, and can also refer to being in a PC5 interface idle state.

[0410] The fifth information is used to notify the relay terminal that there is uplink data.

[0411] The fifth information can be indication information indicating that the relay terminal establishes a user plane connection, or can be indication information indicating that the relay terminal switches from the first mode to a second mode.

[0412] Optionally, the fifth information can be sent through a PC5 link modification message.

[0413] It should be understood that the user plane connection is used to transmit the uplink data.

[0414] It should be understood that the second mode is used to represent that the remote terminal and the relay terminal are enabled to receive PC5 interface data on a PC5 communication connection, in other words, the communication between the remote terminal and other relay terminals can not be in the first mode.

[0415] It should be understood that the function of starting to receive PC5 interface data can refer to being in a mode or state of receiving PC5 interface data, and can also refer to being in a PC5 interface connected state.

[0416] S603, the relay terminal establishes a user plane connection or restores the user plane connection according to the fifth information, and switches from the first mode to the second mode.

[0417] After receiving the fifth information, the relay terminal knows that there is uplink data, establishes a user plane connection, and exits the first mode, that is, the relay terminal switches from the first mode to the second mode and starts to prepare to receive uplink data.

[0418] Optionally, in another implementation scenario of the above embodiment, the method 600 further includes: S604, the remote terminal knows that the relay terminal is in the first mode.

[0419] Specifically, the remote terminal knows that the relay terminal is in the first mode, which can be achieved in the following ways.

[0420] The first way is that the remote terminal receives second mode information from the relay terminal, and the remote terminal knows that the relay terminal is in the first mode according to the second mode information.

[0421] Specifically, if the relay terminal has no uplink data transmission of the remote terminal within a preset time length, the relay terminal enters the first mode, and when the relay terminal enters the first mode, the relay terminal sends second mode information to the remote terminal, which is used to represent (or notify) that the relay terminal is in the first mode.

[0422] The second mode information can be state information of the relay terminal, which is not limited.

[0423] The second way is that the remote terminal sends sixth information to the relay terminal to trigger the relay terminal to enter the first mode.

[0424] Specifically, if the remote terminal has no uplink data transmission within a preset time length, the remote terminal sends sixth information to the relay terminal, which is used to trigger the relay terminal to enter the first mode, and the relay terminal enters the first mode according to the sixth information.

[0425] It should be understood that the remote terminal has no uplink data transmission can be that the remote terminal has no data transmission, which is not limited.

[0426] Optionally, if the remote terminal is connected to a target terminal through the relay terminal, the remote terminal can also be called a source terminal. The source terminal communicates with the target terminal through the relay terminal.

[0427] Optionally, in another implementation scenario of the above embodiment, the method 600 further includes: S605, the remote terminal stores the second mode information of the relay terminal.

[0428] The second mode information is used to represent (or inform) that the relay terminal is in the first mode.

[0429] Optionally, the remote terminal stores the second mode information in the context of the PC5 link between the remote terminal and the relay terminal.

[0430] Optionally, in another implementation scenario of the above embodiment, the method 600 further includes: S606, the remote terminal stores the uplink data.

[0431] The remote terminal can store the uplink data according to the second mode information.

[0432] 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, and 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.

[0433] Optionally, in another implementation scenario of the above embodiment, the method 600 further includes: S607, the relay terminal sends second configuration information to the remote terminal.

[0434] The second configuration information is used for the remote terminal to send the uplink data.

[0435] The second configuration information includes a bandwidth part (BWP) and / or an unlicensed spectrum.

[0436] Optionally, in another implementation scenario of the above embodiment, the method 600 further includes: S608, the remote terminal sends the uplink data to the relay terminal.

[0437] Optionally, the remote terminal sends the uplink data to the relay terminal according to the second configuration information.

[0438] The first possible way is that when the second configuration information includes the BWP, the remote terminal sends the uplink data to the relay terminal on the BWP.

[0439] The second possible way is that when the second configuration information includes the unlicensed spectrum, the remote terminal sends the uplink data to the relay terminal according to the unlicensed spectrum.

[0440] Correspondingly, the relay terminal receives the uplink data from the remote terminal and further sends to the network device or the target terminal.

[0441] Based on the above scheme, when the remote terminal has no data transmission, the relay terminal only receives the PC5 signaling, and when the remote terminal has data transmission, the relay terminal starts to receive the data of the PC5 interface, thereby avoiding the energy waste caused by still listening to the frequency resources related to data transmission, and effectively saving energy. Further, the relay terminal considers the downlink transmission delay / downlink data reception requirement of the remote terminal, and at the same time, tries to save energy between the relay terminal and network communication as much as possible.

[0442] It can be understood that the examples in the embodiments of the present application are only for the convenience of those skilled in the art to understand the embodiments of the present application, and are not intended to limit the embodiments of the present application to the specific scenarios exemplified. Those skilled in the art can obviously make various equivalent modifications or changes according to the examples of the embodiments of the present application, and such modifications or changes also fall within the scope of the embodiments of the present application. FIG. 4 to FIG. 6 FIG. 4 to FIG. 6 It can be understood that some optional features in the embodiments of the present application can not depend on other features in some scenarios, or can be combined with other features in some scenarios, without limitation.

[0443] It can also be understood that some optional features in the embodiments of the present application can not depend on other features in some scenarios, or can be combined with other features in some scenarios, without limitation.

[0444] It can also be understood that the solutions in the embodiments of the present application can be reasonably combined, and the explanation or description of each term appearing in the embodiments can be mutually referenced or explained in each embodiment, without limitation.

[0445] It can also be understood that the size of various numerical serial numbers in the embodiments of the present application does not mean the order of execution, but is only a distinction for convenience of description, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0446] It can also be understood that some message names, such as path switching requirement messages or path switching request messages, etc., involved in the embodiments of the present application should be understood as not limiting the protection scope of the embodiments of the present application.

[0447] It can also be understood that the methods and operations implemented by the terminal device in each method embodiment described above can also be implemented by the constituent components (such as chips or circuits) of the terminal device, and in addition, the methods and operations implemented by the network device can also be implemented by the constituent components (such as chips or circuits) of the network device, without limitation.

[0448] Corresponding to the methods given by the above method embodiments, the embodiments of the present application also provide corresponding devices, which include modules for executing the corresponding modules of the above method embodiments. The module can be software, 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.​

[0449] FIG. 7 is a schematic block diagram of a communication apparatus provided by an embodiment of the present application. The apparatus 700 comprises a transceiver unit 710, which can be configured to implement corresponding communication functions. The transceiver unit 710 can also be referred to as a communication interface or a communication unit.

[0450] Optionally, the apparatus 700 further comprises a processing unit 720, which can be configured to perform data processing.

[0451] Optionally, the apparatus 700 further comprises a storage unit, which can be configured to store instructions and / or data. The processing unit 720 can read the instructions and / or data in the storage unit, so that the apparatus implements the actions of different terminal devices in the foregoing method embodiments, for example, the actions of the relay terminal, the remote terminal, the UE1 or the UE2.

[0452] The apparatus 700 can be configured to perform the actions performed by the terminal devices in the foregoing method embodiments. In this case, the apparatus 700 can be the terminal device or a component of the terminal device. The transceiver unit 710 is configured to perform the transceiver-related operations of the terminal device side in the foregoing method embodiments, and the processing unit 720 is configured to perform the processing-related operations of the terminal device side in the foregoing method embodiments.

[0453] It should also be understood that the apparatus 700 herein is embodied in the form of functional units. The term “unit” herein can refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (for example, a shared processor, a dedicated processor or a group processor and the like) and a memory for executing one or more software or firmware programs, a combination of logical circuit and / or other suitable components for supporting the described functions. In an optional example, those skilled in the art can understand that the apparatus 700 can be specifically the relay terminal in the foregoing embodiments, and can be configured to perform the processes and / or steps corresponding to the relay terminal in the foregoing method embodiments. Alternatively, the apparatus 700 can be specifically the remote terminal in the foregoing embodiments, and can be configured to perform the processes and / or steps corresponding to the remote terminal in the foregoing method embodiments. To avoid repetition, details are not described herein.

[0454] The apparatus 700 of each of the above-mentioned solutions has a function of implementing the corresponding steps performed by the relay terminal in the above-mentioned methods, or the apparatus 700 of each of the above-mentioned solutions has a function of implementing the corresponding steps performed by the remote terminal in the above-mentioned methods. The function can be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions; for example, the transceiver unit can be replaced by a transceiver (for example, the transmitting 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), and other units such as the processing unit can be replaced by a processor, which respectively performs the transceiving operation and the related processing operation in each method embodiment.

[0455] In addition, the transceiver unit 710 can also be a transceiver circuit (for example, can include a receiving circuit and a transmitting circuit), and the processing unit can be a processing circuit.

[0456] It should be noted that, FIG. 7 The apparatus in the above-mentioned solutions can be a network element or a device in the above-mentioned embodiments, or a chip or a chip system, for example, a system on chip (SoC). The transceiver unit can be an input / output circuit or a communication interface, and the processing unit can be a processor or a microprocessor integrated on the chip or an integrated circuit. In this regard, no limitation is made.

[0457] As shown in FIG. 8 embodiments of the present application provide another communication apparatus 800. The apparatus 800 includes a processor 810, the processor 810 is coupled with a memory 820, the memory 820 is used to store computer programs or instructions and / or data, and the processor 810 is used to execute the computer programs or instructions stored in the memory 820, or read the data stored in the memory 820, to perform the methods in the above-mentioned method embodiments.

[0458] Optionally, the processor 810 is one or more.

[0459] Optionally, the memory 820 is one or more.

[0460] Optionally, the memory 820 and the processor 810 are integrated together, or are separately arranged.

[0461] Optionally, as shown in FIG. 8 the apparatus 800 further includes a transceiver 830, the transceiver 830 is used for receiving and / or sending signals. For example, the processor 810 is used to control the transceiver 830 to receive and / or send signals.

[0462] As a solution, the apparatus 800 is used to implement the operations performed by the terminal device in the above-mentioned method embodiments.

[0463] For example, the processor 810 is configured to execute the computer programs or instructions stored in the memory 820 to implement the operations of the relay terminal in the various method embodiments described above. For example, FIG. 2 to FIG. 6 the method performed by the relay terminal in any of the embodiments described above, or

[0464] For another example, the processor 810 is configured to execute the computer programs or instructions stored in the memory 820 to implement the operations of the remote terminal in the various method embodiments described above. For example, FIG. 2 、 FIG. 5 、 FIG. 6 the method performed by the remote terminal in any of the embodiments described above, or FIG. 3 、 FIG. 4 the method performed by the UE1 or the UE2 in any of the embodiments described above.

[0465] It should be understood that the processor mentioned in the embodiments of the present application can be a central processing unit (CPU), and can also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs) or other programmable logic devices, discrete gates or transistor logic components, discrete hardware components, etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor.

[0466] It should also be understood that the memory mentioned in the embodiments of the present application can be a volatile memory and / or a non-volatile memory. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically EPROM (EEPROM) or a flash memory. The volatile memory can be a random access memory (RAM). For example, the RAM can be used as an external cache. As an example but not limitation, the RAM includes the following various forms: static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM) and direct rambus RAM (DR RAM).

[0467] It should be noted that when the processor is a general processor, a DSP, an ASIC, a FPGA or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, the memory (storage module) can be integrated in the processor.

[0468] It should also be noted that the memory described herein is intended to include, but not limited to, these and any other suitable types of memory.

[0469] As FIG. 9 The embodiments of the present application provide a chip system 900. The chip system 900 (or also can be called a processing system) includes a logic circuit 910 and an input / output interface 920.

[0470] The logic circuit 910 can be a processing circuit in the chip system 900. The logic circuit 910 can be coupled with the storage unit, invoke instructions in the storage unit, so that the chip system 900 can implement the methods and functions of the embodiments of the present application. The input / output interface 920 can be an input / output circuit in the chip system 900, output information processed by the chip system 900, or input data or signaling information to be processed by the chip system 900 for processing.

[0471] Specifically, for example, if the relay terminal is installed with the chip system 900, the logic circuit 910 is coupled with the input / output interface 920, the logic circuit 910 can send first information to the remote terminal through the input / output interface 920, the first information can be 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 installed with the chip system 900, the logic circuit 910 is coupled with the input / output interface 920, the logic circuit 910 can send first demand indication information to the relay terminal through the input / output interface 920, the first demand indication information can be first demand indication information generated by the logic circuit 910 according to the absence of data reception demand; or the input / output interface 920 can input the first information from the relay terminal to the logic circuit 910 for processing.

[0472] As a solution, the chip system 900 is used to implement the operations performed by the terminal device in the above various method embodiments.

[0473] For example, the logic circuit 910 is used to implement the processing-related operations performed by the relay terminal in the above method embodiments, such as, FIG. 2 to FIG. 6 the processing-related operations performed by the relay terminal in any one of the embodiments shown in the above method embodiments; 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, FIG. 2 to FIG. 6 the sending and / or receiving-related operations performed by the relay terminal in any one of the embodiments shown in the above method embodiments.

[0474] For 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, FIG. 2 , FIG. 4 to FIG. 6 the processing-related operations performed by the remote terminal in any one of the embodiments shown in the above method embodiments, or FIG. 3 the processing-related operations performed by the UE1 or UE2 in the embodiments shown in the above method embodiments; 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, such as, FIG. 2 , FIG. 5 ,FIG. 6 the sending and / or receiving related operations performed by the remote terminal in any of the embodiments shown. FIG. 3 、 FIG. 4 the sending and / or receiving related operations performed by the UE1 or UE2 in any of the embodiments shown.

[0475] The embodiments of the present application further provide a computer readable storage medium, having stored thereon computer instructions for implementing the method performed by the relay terminal or the remote terminal in the method embodiments.

[0476] For example, the computer program is executed by a computer, so that the computer can implement the method performed by the relay terminal in the method embodiments.

[0477] The embodiments of the present application further provide a computer program product, containing instructions, which are executed by a computer to implement the method performed by the relay terminal or the remote terminal in the method embodiments.

[0478] The embodiments of the present application further provide a communication system, which comprises the relay terminal and the remote terminal in the embodiments. FIG. 3 the relay terminal and the remote terminal in the embodiments shown.

[0479] The explanations and beneficial effects of the related contents in any of the above provided devices can refer to the corresponding method embodiments provided above, and will not be repeated here.

[0480] In several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of the units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interfaces, devices or units, and can be electrical, mechanical or other forms.

[0481] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or part of the embodiments can be implemented 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 a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable apparatus. For example, the computer can be a personal computer, a server, a network device, etc. The computer instructions can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions can be transferred from one website, computer, server or data center to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) manner. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. integrated with one or more available media sets. The available media can be a magnetic medium (such as a floppy disk, a hard disk, a magnetic tape), an optical medium (such as a DVD), or a semiconductor medium (such as a solid state disk (SSD), etc. For example, the foregoing available media includes but is not limited to: a variety of media that can store program codes such as a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.

[0482] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A communication method characterized by comprising: Comprising: determining, by a relay terminal, first proximity service communication 5 discontinuous reception PC5 DRX parameters according to discontinuous reception DRX parameters of the relay terminal, the first PC5 DRX parameters being used for PC5 communication between a remote terminal and the relay terminal, the remote terminal being a terminal connected to a network or a target terminal through the relay terminal; sending, by the relay terminal, a correspondence between the first PC5 DRX parameters and a PC5 DRX mode to the remote terminal; when the relay terminal enters an idle state and receives downlink information using the DRX parameters, sending, by the relay terminal, the PC5 DRX mode to the remote terminal.

2. The method of claim 1, wherein, The first PC5 DRX parameters include a first DRX cycle and a first reception window length.

3. A communication method characterized by comprising: Comprising: receiving, by a remote terminal, a correspondence between first proximity service communication 5 discontinuous reception PC5 DRX parameters and a PC5 DRX mode from a relay terminal; receiving, by the remote terminal, the PC5 DRX mode from the relay terminal; determining, by the remote terminal, the first PC5 DRX parameters according to the correspondence and the PC5 DRX mode; receiving, by the remote terminal, information from the relay terminal according to the first PC5 DRX parameters; wherein the remote terminal is a terminal connected to a network or a target terminal through the relay terminal.

4. The method of claim 3, wherein, The first PC5 DRX parameters include a first discontinuous reception DRX cycle and a first reception window length.

5. A communication device, characterized by Comprising: a processor configured to execute a computer program stored in a memory to cause the apparatus to perform the method of any one of claims 1 to 4.

6. The apparatus of claim 5, wherein, The apparatus further comprises the memory.

7. A computer readable storage medium characterized in that, The computer program is stored on a computer readable storage medium and, when executed on a computer, causes the computer to perform the method of any one of claims 1 to 4.

8. A computer program product, characterised in that, The computer program product comprises instructions for performing the method of any one of claims 1 to 4.

9. A communication system, characterized by Comprising: a relay terminal and a remote terminal; the relay terminal is configured to perform the method of claim 1 or 2; the remote terminal is configured to perform the method of claim 3 or 4.

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