WO2024027556A1 - Communication method, apparatus and system - Google Patents

Abstract

The present application provides a communication method, apparatus and system. The method comprises: a first terminal device generates first identifier information, the first identifier information being used for indicating a second terminal device, and the second terminal device being a candidate terminal device providing a relay service to the first terminal device; and the first terminal device sends first information to a network device, the first information comprising the first identifier information. According to the present application, the first terminal device generates the first identifier information for the second terminal device and the second terminal device sends the first identifier information and an identifier of the second terminal device to the network device, so that after selecting the second terminal device on the basis of the first information, the network device can send, to the second terminal device and on the basis of the first identifier information and the identifier of the second terminal device that are sent by the second terminal device to the network device, configuration required to provide a relay, thereby enabling the second terminal device to provide the relay for communication between the first terminal device and the network device on the basis of the configuration.

Description

A communication method, device and system

This application claims priority to the Chinese patent application filed with the China Patent Office on August 5, 2022, with application number 202210937541.1 and application title "A communication method, device and system", the entire content of which is incorporated into this application by reference. middle.

Technical field

The present application relates to the field of communications, and, more specifically, to methods, devices and systems for identifying terminal equipment in a link.

Background technique

Two communication links can be established simultaneously between a terminal equipment (user equipment, UE) (such as a remote UE) and the base station. One is a direct link for direct communication through the Uu port, and the other is through another UE. (For example, it is called a relay UE) An indirect link that communicates with the base station. For example, the remote UE and the relay UE can communicate through the sidelink connection in the indirect link. In the sidelink connection, there is a layer-2 identifier (layer-2identifier, L2ID) used to identify the terminal device. When there is a direct link between the remote UE and the base station, the base station can select the relay UE for the remote UE through the L2ID of the candidate relay UE reported by the remote UE and the L2ID reported by the relay UE. The UE configures an indirect link so that the remote UE can communicate with the base station through the direct link and the indirect link.

In the above process, how to identify the terminal device in the link is crucial for the base station to configure and add indirect links for the remote UE.

Contents of the invention

This application provides a communication method that can identify a terminal device so that the base station configures and adds an indirect link for the remote UE.

In a first aspect, a communication method is provided, applied to a first terminal device, including: generating first identification information, the first identification information being used to indicate a second terminal device, and the second terminal device is for the said The first terminal device provides a candidate terminal device for the relay service; and sends first information to the network device, where the first information includes the first identification information.

In the embodiment of the present application, the first terminal device is used to generate the first identification information for the second terminal device and the first identification information is sent to the network device, so that both the first terminal device and the network device can identify the second terminal device, thereby The second terminal device is enabled to relay communication between the first terminal device and the network device.

In this embodiment of the present application, in a first terminal device, each first identification information corresponds to a second terminal device, and the first terminal device can generate one or more first identification information for one or more second terminal devices. , the embodiment of the present application does not limit the number of second terminal devices.

For example, the first identification information in the embodiment of this application may include index.

In a possible implementation, the first terminal device first determines one or more second terminal devices before generating the first identification information. For example, the first terminal device searches for or senses the second terminal devices available within a certain range. , "available" can be understood to mean that there is a connection between the first terminal device and the second terminal device; or that the connection between the first terminal device and the second terminal device can be established through the connection establishment process; or that the first terminal device receives the second The indication information sent by the terminal device indicates that the second terminal device can provide relay services, where the indication information may include authorization information of the second terminal device. Since the first terminal device and the second terminal device can be a 3GPP interface or a non-3GPP interface, how the first terminal device perceives the second terminal device and how to define the available second terminal device will not be elaborated here. The limit can be determined by the terminal device implementation or the interface implementation. In a possible implementation, the first terminal device can broadcast a search message within a certain range. If a reply message fed back by the second terminal device is received, the second terminal device is considered available.

In some implementations, the method further includes: sending the first identification information and the second identification information to the second terminal device, where the second identification information is used to indicate the first terminal device.

In this embodiment of the present application, by sending the first identification information and the second identification information to the second terminal device, the second terminal device can identify the first terminal device that needs to provide relay services.

In this embodiment of the present application, the first terminal device may send a request to all the second terminal devices before the network device determines the second terminal device as the relay device. The first identification information and the second identification information may be sent to the second terminal device that provides relay services for the first terminal device; or after the network device determines the second terminal device as the relay device, the network device may send the first identification information to the second terminal device as the relay device. The two terminal devices send the first identification information and the second identification information.

In some implementations, a first connection exists between the first terminal device and the second terminal device, and the first connection is a non-3GPP defined connection.

In the embodiment of the present application, the first terminal device and the second terminal device can establish a connection through a non-3GPP method, and can communicate more flexibly.

Non-3GPP-defined connections refer to other connection methods between terminal devices except sidelink. For example, non-3GPP-defined connections may be WiFi, wired connections, and Bluetooth.

In some implementations, the second identification information is used to uniquely identify the first terminal device in the network device.

In this embodiment of the present application, the first terminal device is uniquely identified through the second identification information, which can make communication more accurate and reliable.

In some implementations, the first information further includes: third identification information, the third identification information is used to indicate the cell where the second terminal device is camped.

In the embodiment of the present application, by sending the cell identifier of the second terminal device to the network device, it can be ensured that the second terminal device determined by the network device can relay the communication between the first terminal device and the network device, thereby improving the accuracy of determining the second terminal device. efficiency and communication reliability.

In some implementations, the method further includes: receiving first indication information from the network device, the first indication information being used to instruct the network device to select a second terminal for the first terminal device. Device, the second terminal device selected by the network device for the first terminal device is used to provide relay for data transmission of the first terminal device.

In the embodiment of the present application, by indicating to the first terminal device the second terminal device selected by the network device, the first terminal device can communicate with the network device directly or communicate with the network device through the second terminal device, thereby Improve the throughput and reliability of data sending and receiving.

In some implementations, the method further includes: receiving second information from the second terminal device, the second information being used to indicate whether there is a connection between the second terminal device and the network device. .

In this embodiment of the present application, by indicating the connection relationship between the second terminal device and the network device, it is possible to prevent the network device from being unable to send corresponding configuration information to the second terminal device.

In some implementations, the first indication information is also used to indicate whether there is a connection between the second terminal device and the network device.

In the embodiment of the present application, by indicating the connection relationship between the second terminal device selected by the network device and the network device, it can be avoided that the network device cannot send corresponding configuration information to the second terminal device.

In some implementations, if it is determined that there is no connection between the second terminal device and the network device, the method further includes: sending third indication information to the second terminal device, the third The instruction information is used to instruct the second terminal device to establish a connection with the network device.

In this embodiment of the present application, by instructing the second terminal device to establish a connection with the network device through the first terminal device, the second terminal device can receive the configuration information sent by the network device, thereby ensuring that the second terminal device implements the relay function.

In a second aspect, a communication method is provided, applied to a second terminal device, including: receiving first identification information and second identification information from the first terminal device, the first identification information being used to indicate the second Terminal device, the second identification information is used to indicate the first terminal device, and the first identification information is generated by the first terminal device; sending the first identification information and the second identification to a network device information.

In the embodiment of the present application, by receiving the first identification information and the second identification information from the first terminal device and sending the first identification information and the second identification information to the network device, the network device can select the second identification information for the first terminal device. The terminal device is configured to configure the second terminal device so that the second terminal device can relay communications between the first terminal device and the network device.

In this embodiment of the present application, sending the first identification information and the second identification information to the network device may be that before the network device determines the second terminal device as the relay device, the second terminal device sends the first identification information and the second identification information to the network device. 2. Identification information; it may also be that after the network device determines the second terminal device as the relay device, the second terminal device as the relay device sends the first identification information and the second identification information to the network device.

In some implementations, the first terminal device and the second terminal device are connected through a non-3GPP method.

In the embodiment of the present application, the first terminal device and the second terminal device can establish a connection through a non-3GPP method, which can be more flexible. Communicate lively.

Non-3GPP-defined connections refer to other connection methods between terminal devices except sidelink. For example, non-3GPP-defined connections may be WiFi, wired connections, and Bluetooth.

In some implementations, the second identification information is used to uniquely identify the first terminal device in the network device.

In some implementations, the method further includes: sending third identification information to the first terminal device, where the third identification information is used to indicate a cell where the second terminal device is camped.

In the embodiment of the present application, by sending the cell identity of the second terminal device to the first terminal device, it can be ensured that the second terminal device and the first terminal device determined by the network device are under the same base station, thereby meeting the possible requirements of the second terminal device and the first terminal device. The first terminal can only provide relay services for the first terminal under one base station, thereby improving the efficiency of determining the second terminal device and the reliability of communication.

In some implementations, the method further includes: receiving second indication information from the network device, the second indication information being used to instruct the second terminal device to provide a relay for the first terminal device. service, the second indication information includes second identification information of the first terminal device.

In the embodiment of the present application, by instructing the second terminal device to provide relay services for the first terminal device, the first terminal device can communicate with the network device directly or communicate with the network device through the second terminal device, thereby Improve the throughput and reliability of data sending and receiving.

In some implementations, the method further includes: sending second information to the first terminal device, where the second information is used to indicate whether a connection exists between the second terminal device and the network device.

In this embodiment of the present application, by indicating the connection relationship between the second terminal device and the network device, it is possible to prevent the network device from being unable to send corresponding configuration information to the second terminal device.

In some implementations, if there is no connection between the second terminal device and the network device, the method further includes: receiving third indication information from the first terminal device, the third The instruction information is used to instruct the second terminal device to establish a connection with the network device; to establish a connection with the network device.

In this embodiment of the present application, by instructing the second terminal device to establish a connection with the network device through the first terminal device, the second terminal device can receive the configuration information sent by the network device, thereby ensuring that the second terminal device implements the relay function.

In a third aspect, a communication method is provided, applied to a network device, including: receiving first identification information and second identification information from a second terminal device, the first identification information being used to indicate the second terminal device , the second identification information is used to indicate the first terminal device; receiving first information from the first terminal device, where the first information includes the first identification information.

In this embodiment of the present application, the network device can identify the second terminal device by receiving the first identification information and the second identification information from the second terminal device, so that the network device can select the second terminal device to relay the first terminal device and the network. Communication between devices.

In some implementations, the method further includes: determining, according to the first information, that the second terminal device provides a relay service for the first terminal device.

In the embodiment of the present application, by selecting the second terminal device to provide relay services for the first terminal device, the first terminal device can communicate with the network device directly or communicate with the network device through the second terminal device, thereby Improve the throughput and reliability of data sending and receiving.

In some implementations, the method further includes: sending first indication information to the first terminal device, where the first indication information is used to instruct the second terminal device determined by the network device.

In the embodiment of the present application, by selecting the second terminal device to provide relay services for the first terminal device, the first terminal device can communicate with the network device directly or communicate with the network device through the second terminal device, thereby Improve the throughput and reliability of data sending and receiving.

In some implementations, the first indication information is also used to indicate whether there is a connection between the second terminal device and the network device.

In the embodiment of the present application, by indicating the connection relationship between the second terminal device selected by the network device and the network device, it can be avoided that the network device cannot send corresponding configuration information to the second terminal device.

In some implementations, the method further includes: sending second indication information to the second terminal device, the second indication information being used to instruct the second terminal device to provide the first terminal device with Following service.

In the embodiment of the present application, by selecting the second terminal device to provide relay services for the first terminal device, the first terminal device can communicate with the network device directly or communicate with the network device through the second terminal device, thereby Improve data throughput throughput rate and reliability.

In some implementations, the first terminal device and the second terminal device are connected through a non-3GPP method.

In the embodiment of the present application, the first terminal device and the second terminal device can establish a connection through a non-3GPP method, and can communicate more flexibly.

Non-3GPP-defined connections refer to other connection methods between terminal devices except sidelink. For example, non-3GPP-defined connections may be WiFi, wired connections, and Bluetooth.

In some implementations, the second identification information is unique identification information in the network device.

In some implementations, the first information further includes: third identification information, the third identification information is used to indicate the cell where the second terminal device is camped.

In the embodiment of the present application, by receiving the first identification information and the second identification information from the second terminal device, the network device can select the second terminal device for the first terminal device and configure the second terminal device so that the second terminal device The terminal device may relay communications between the first terminal device and the network device.

In a fourth aspect, a communication method is provided, applied to a first terminal device, including: receiving first identification information from a second terminal device, the first identification information being used to indicate the second terminal device, the second The terminal device is a candidate terminal device that provides relay services for the first terminal device, and the first identification information is generated by the network device; and sends first information to the network device, where the first information includes the first Identification information.

In this embodiment of the present application, the first terminal device receives the first identification information from the second terminal device. The first identification information is generated by the network device, so that both the first terminal device and the network device can identify the second terminal device. , so that the second terminal device can relay the communication between the first terminal device and the network device.

In some implementations, the method further includes: sending second identification information to the second terminal device, where the second identification information is used to indicate the first terminal device.

In this embodiment of the present application, by sending the second identification information to the second terminal device, the second terminal device can identify the first terminal device that needs to provide relay services.

In some implementations, a first connection exists between the first terminal device and the second terminal device, and the first connection is a non-3GPP defined connection.

In the embodiment of the present application, the first terminal device and the second terminal device can establish a connection through a non-3GPP method, and can communicate more flexibly.

Non-3GPP-defined connections refer to other connection methods between terminal devices except sidelink. For example, non-3GPP-defined connections may be WiFi, wired connections, and Bluetooth.

In some implementations, the second identification information is used to uniquely identify the first terminal device in the network device.

In some implementations, the first information further includes: third identification information, the third identification information is used to indicate the cell where the second terminal device is camped.

In the embodiment of the present application, by sending the cell identifier of the second terminal device to the network device, it can be ensured that the second terminal device determined by the network device can relay the communication between the first terminal device and the network device, thereby improving the accuracy of determining the second terminal device. efficiency and communication reliability.

In some implementations, the method further includes: receiving first indication information from the network device, the first indication information being used to instruct the network device to select a second terminal for the first terminal device. Device, the second terminal device selected by the network device for the first terminal device is used to provide relay for data transmission of the first terminal device.

In the embodiment of the present application, by indicating to the first terminal device the second terminal device selected by the network device, the first terminal device can communicate with the network device directly or communicate with the network device through the second terminal device, thereby Improve the throughput and reliability of data sending and receiving.

In some implementations, the method further includes: receiving second information from the second terminal device, the second information being used to indicate whether there is a connection between the second terminal device and the network device. .

In this embodiment of the present application, by indicating the connection relationship between the second terminal device and the network device, it is possible to prevent the network device from being unable to send the first identification information to the second terminal device.

In some implementations, if it is determined that there is no connection between the second terminal device and the network device, the method further includes: sending third indication information to the second terminal device, the third The instruction information is used to instruct the second terminal device to establish a connection with the network device.

In the embodiment of the present application, the first terminal device instructs the second terminal device to establish a connection with the network device, so that the second terminal device can receive the first identification information sent by the network device, thereby ensuring that the second terminal device implements the relay function. .

In a fifth aspect, a communication method is provided, applied to a second terminal device, including: receiving first identification information from a network device, the first identification information being used to indicate the second terminal device, the first Identification information is generated by the network device; sending the first identification information to the first terminal device, where the first identification information is used by the first terminal device to report to the network device; receiving data from the first terminal device. Second identification information of the device, the second identification information is used to indicate the first terminal device, and the second identification information is allocated by the network device; receiving the second identification information from the network device.

In the embodiment of the present application, by receiving the first identification information from the network device and the second identification information from the first terminal device and sending the first identification information to the first terminal device, the network device can select the first terminal device for the first terminal device. two terminal devices, and configure the second terminal device so that the second terminal device can relay communications between the first terminal device and the network device.

In some implementations, the first terminal device and the second terminal device are connected through a non-3GPP method.

In the embodiment of the present application, the first terminal device and the second terminal device can establish a connection through a non-3GPP method, and can communicate more flexibly.

Non-3GPP-defined connections refer to other connection methods between terminal devices except sidelink. For example, non-3GPP-defined connections may be WiFi, wired connections, and Bluetooth.

In some implementations, the second identification information is used to uniquely identify the first terminal device in the network device.

In some implementations, the method further includes: sending third identification information to the first terminal device, where the third identification information is used to indicate a cell where the second terminal device is camped.

In the embodiment of the present application, by sending the cell identity of the second terminal device to the first terminal device, it can be ensured that the second terminal device and the first terminal device determined by the network device are under the same base station, thereby meeting the possible requirements of the second terminal device and the first terminal device. The first terminal can only provide relay services for the first terminal under one base station, thereby improving the efficiency of determining the second terminal device and the reliability of communication.

In some implementations, the method further includes: receiving second indication information from the network device, the second indication information being used to instruct the second terminal device to provide a relay for the first terminal device. service, the second indication information includes second identification information of the first terminal device.

In the embodiment of the present application, by instructing the second terminal device to provide relay services for the first terminal device, the first terminal device can communicate with the network device directly or communicate with the network device through the second terminal device, thereby Improve the throughput and reliability of data sending and receiving.

In some implementations, the method further includes: sending second information to the first terminal device, where the second information is used to indicate whether a connection exists between the second terminal device and the network device.

In this embodiment of the present application, by indicating the connection relationship between the second terminal device and the network device, it is possible to prevent the network device from being unable to send the corresponding first identification information to the second terminal device.

In some implementations, if there is no connection between the second terminal device and the network device, the method further includes: receiving third indication information from the first terminal device, the third The instruction information is used to instruct the second terminal device to establish a connection with the network device; to establish a connection with the network device.

In the embodiment of the present application, the first terminal device instructs the second terminal device to establish a connection with the network device, so that the second terminal device can receive the first identification information sent by the network device, thereby ensuring that the second terminal device implements the relay function. .

In a sixth aspect, a communication method is provided, applied to a network device, including: sending first identification information to the second terminal device, the first identification information being used to indicate the second terminal device; receiving data from the second terminal device. The first information of the first terminal device includes the first identification information.

In the embodiment of the present application, by sending the first identification information to the second terminal device and receiving the second identification information from the second terminal device, the network device can identify the second terminal device, so that the network device can select one of the second terminal devices. Following communication between the first terminal device and the network device.

In some implementations, the method further includes: determining, according to the first information, that the second terminal device provides a relay service for the first terminal device.

In the embodiment of the present application, by selecting the second terminal device to provide relay services for the first terminal device, the first terminal device can communicate with the network device directly or communicate with the network device through the second terminal device, thereby Improve the throughput and reliability of data sending and receiving.

In some implementations, the method further includes: sending first indication information to the first terminal device, where the first indication information is used to instruct the second terminal device determined by the network device.

In some implementations, the first indication information is also used to indicate whether there is a connection between the second terminal device and the network device.

In the embodiment of the present application, by indicating the connection relationship between the second terminal device selected by the network device and the network device, it can be avoided that the network device cannot send the corresponding first identification information to the second terminal device.

In some implementations, the method further includes: sending second indication information to the second terminal device, the second indication information being used to instruct the second terminal device to provide the first terminal device with Following service.

In the embodiment of the present application, by selecting the second terminal device to provide relay services for the first terminal device, the first terminal device can communicate with the network device directly or communicate with the network device through the second terminal device, thereby Improve the throughput and reliability of data sending and receiving.

In some implementations, the first terminal device and the second terminal device are connected through a non-3GPP method.

In the embodiment of the present application, the first terminal device and the second terminal device can establish a connection through a non-3GPP method, and can communicate more flexibly.

Non-3GPP-defined connections refer to other connection methods between terminal devices except sidelink. For example, non-3GPP-defined connections may be WiFi, wired connections, and Bluetooth.

In some implementations, the second identification information is unique identification information in the network device.

In some implementations, the first information further includes: third identification information, the third identification information is used to indicate the cell where the second terminal device is camped.

In this embodiment of the present application, the network device can ensure that the second terminal device can relay the communication between the first terminal device and the network device according to the cell identifier of the second terminal device, thereby improving the efficiency of determining the second terminal device and the reliability of communication.

In a seventh aspect, a communication device is provided, including: a processing unit configured to generate first identification information, the first identification information being used to indicate a second terminal device, and the second terminal device is the first terminal device. The terminal device provides a candidate terminal device for the relay service; a transceiver unit configured to send first information to the network device, where the first information includes the first identification information.

In some implementations, the transceiver unit is further configured to send the first identification information and the second identification information to the second terminal device, and the second identification information is used to indicate the first terminal device.

In some implementations, a first connection exists between the first terminal device and the second terminal device, and the first connection is a non-3GPP defined connection.

In some implementations, the second identification information is used to uniquely identify the first terminal device in the network device.

In some implementations, the first information further includes: third identification information, the third identification information is used to indicate the cell where the second terminal device is camped.

In some implementations, the transceiver unit is further configured to receive first indication information from the network device, where the first indication information is used to instruct the network device to select the second terminal device for the first terminal device. A terminal device, the second terminal device selected by the network device for the first terminal device is used to provide relay for data transmission of the first terminal device.

In some implementations, the transceiver unit is further configured to receive second information from the second terminal device, where the second information is used to indicate whether there is a connection between the second terminal device and the network device. connect.

In some implementations, the first indication information is also used to indicate whether there is a connection between the second terminal device and the network device.

In some implementations, if it is determined that there is no connection between the second terminal device and the network device, the transceiver unit is further configured to send third indication information to the second terminal device. The third instruction information is used to instruct the second terminal device to establish a connection with the network device.

In an eighth aspect, a communication device is provided, including: a transceiver unit configured to receive first identification information and second identification information from a first terminal device, where the first identification information is used to indicate the second terminal device , the second identification information is used to indicate the first terminal device, and the first identification information is generated by the first terminal device; the transceiver unit is also used to send the first identification information and the second identification information.

In some implementations, the transceiver unit is further configured to send third identification information to the first terminal device, where the third identification information is used to indicate the cell where the second terminal device resides.

In some implementations, the transceiver unit is further configured to receive second indication information from the network device, and the second indication information is used to instruct the second terminal device to provide the first terminal device with Following the service, the second indication information includes second identification information of the first terminal device.

In some implementations, the transceiver unit is also configured to send second information to the first terminal device, where the second information is used to indicate whether there is a connection between the second terminal device and the network device. .

In some implementations, if there is no connection between the second terminal device and the network device, the transceiver unit is further configured to: receive third indication information from the first terminal device, the The third instruction information is used to instruct the second terminal device to establish a connection with the network device; to establish a connection with the network device.

In a ninth aspect, a communication method device is provided, including: a transceiver unit configured to receive first identification information and second identification information from a second terminal device, where the first identification information is used to indicate that the second terminal device, the second identification information is used to indicate the first terminal device; the transceiver unit is also used to receive first information from the first terminal device, where the first information includes the first identification information.

In some implementations, the apparatus further includes: a processing unit configured to determine, according to the first information, that the second terminal device provides a relay service for the first terminal device.

In some implementations, the transceiver unit is further configured to send first indication information to the first terminal device, where the first indication information is used to instruct the second terminal device determined by the network device.

In some implementations, the first indication information is also used to indicate whether there is a connection between the second terminal device and the network device.

In some implementations, the transceiver unit is further configured to send second indication information to the second terminal device, and the second indication information is used to instruct the second terminal device to provide the first terminal device with Relay service.

In some implementations, the first terminal device and the second terminal device are connected through a non-3GPP method.

In some implementations, the second identification information is unique identification information in the network device.

In some implementations, the first information further includes: third identification information, the third identification information is used to indicate the cell where the second terminal device is camped.

In a tenth aspect, a communication device is provided, including: a transceiver unit configured to receive first identification information from a second terminal device, the first identification information being used to indicate the second terminal device, and the second terminal device is a candidate terminal device that provides relay services for the first terminal device, and the first identification information is generated by the network device; the transceiver unit is also used to send first information to the network device, the first information including the first identification information.

In some implementations, the transceiver unit is further configured to send second identification information to the second terminal device, where the second identification information is used to indicate the first terminal device.

In some implementations, a first connection exists between the first terminal device and the second terminal device, and the first connection is a non-3GPP defined connection.

In some implementations, the second identification information is used to uniquely identify the first terminal device in the network device.

In some implementations, the first information further includes: third identification information, the third identification information is used to indicate the cell where the second terminal device is camped.

In some implementations, the transceiver unit is further configured to receive first indication information from the network device, where the first indication information is used to instruct the network device to select the second terminal device for the first terminal device. A terminal device, the second terminal device selected by the network device for the first terminal device is used to provide relay for data transmission of the first terminal device.

In some implementations, the transceiver unit is further configured to receive second information from the second terminal device, where the second information is used to indicate whether there is a connection between the second terminal device and the network device. connect.

In some implementations, if it is determined that there is no connection between the second terminal device and the network device, the transceiver unit is further configured to send third indication information to the second terminal device. The third instruction information is used to instruct the second terminal device to establish a connection with the network device.

In an eleventh aspect, a communication device is provided, including: a transceiver unit configured to receive first identification information from a network device, the first identification information being used to indicate the second terminal device, the first identification The information is generated by the network device; the transceiver unit is also used to send the first identification information to the first terminal device, and the first identification information is used by the first terminal device to report to the network device ; The transceiver unit is also used to receive second identification information from the first terminal device, and the second identification information is used to Instruct the first terminal device that the second identification information is allocated by the network device; the transceiver unit is also configured to receive the second identification information from the network device.

In some implementations, the first terminal device and the second terminal device are connected through a non-3GPP method.

In some implementations, the second identification information is used to uniquely identify the first terminal device in the network device.

In some implementations, the transceiver unit is further configured to send third identification information to the first terminal device, where the third identification information is used to indicate the cell where the second terminal device resides.

In some implementations, the transceiver unit is further configured to receive second indication information from the network device, and the second indication information is used to instruct the second terminal device to provide the first terminal device with Following the service, the second indication information includes second identification information of the first terminal device.

In some implementations, the transceiver unit is also configured to send second information to the first terminal device, where the second information is used to indicate whether there is a connection between the second terminal device and the network device. .

In some implementations, if there is no connection between the second terminal device and the network device, the transceiver unit is further configured to receive third indication information from the first terminal device, and the third The third instruction information is used to instruct the second terminal device to establish a connection with the network device; to establish a connection with the network device.

In a twelfth aspect, a communication device is provided, including: a transceiver unit, configured to send first identification information to the second terminal device, where the first identification information is used to indicate the second terminal device; The transceiver unit is also used to receive second identification information from the second terminal device, the second identification information is used to indicate the first terminal device; the transceiver unit is also used to receive the third identification information from the first terminal device. One piece of information, the first information includes the first identification information.

In some implementations, the apparatus further includes: a processing unit configured to determine, according to the first information, that the second terminal device provides a relay service for the first terminal device.

In some implementations, the transceiver unit is further configured to send first indication information to the first terminal device, where the first indication information is used to instruct the second terminal device determined by the network device.

In some implementations, the first indication information is also used to indicate whether there is a connection between the second terminal device and the network device.

In some implementations, the transceiver unit is further configured to send second indication information to the second terminal device, and the second indication information is used to instruct the second terminal device to provide the first terminal device with Relay service.

In some implementations, the first terminal device and the second terminal device are connected through a non-3GPP method.

In some implementations, the second identification information is unique identification information in the network device.

In some implementations, the first information further includes: third identification information, the third identification information is used to indicate the cell where the second terminal device is camped.

In a thirteenth aspect, a communication device is provided, including: a processor configured to execute a computer program stored in a memory, so that the communication device executes the communication method of any one of the above-mentioned first to sixth aspects. Optionally, the device further includes a memory for storing computer programs or instructions. Optionally, the device further includes a communication interface, through which the processor reads the computer program or instructions stored in the memory.

In a fourteenth aspect, a communication system is provided, including at least one of the aforementioned first terminal device, second terminal device, and network device.

In a fifteenth aspect, a chip is provided, including: a processor for calling and running a computer program from a memory, so that a communication device installed with the chip system executes any one of the first to sixth aspects. Communication methods.

A sixteenth aspect provides a computer program that, when executed by a communication device, implements the communication method of any one of the first to sixth aspects.

In a seventeenth aspect, a computer-readable storage medium is provided. A computer program is stored on the computer-readable storage medium. When the computer program is run on a computer, it causes the computer to execute the first to sixth aspects. Communication methods for any of the aspects.

Description of drawings

Figure 1 is a schematic diagram of an application scenario according to an embodiment of the present application.

Figure 2 is a schematic flowchart of a method 200 according to an embodiment of the present application.

Figure 3 is a schematic flowchart of a method 300 according to an embodiment of the present application.

Figure 4 is a schematic flowchart of a method 400 according to an embodiment of the present application.

Figure 5 is a schematic flowchart of a method 500 according to an embodiment of the present application.

Figure 6 is a schematic flowchart of a method 600 according to an embodiment of the present application.

Figure 7 is a schematic flowchart of a method 700 according to an embodiment of the present application.

Figure 8 is a schematic flowchart of a method 800 according to an embodiment of the present application.

Figure 9 is a schematic flowchart of a method 900 according to an embodiment of the present application.

Figure 10 is a schematic flowchart of a method 1000 according to an embodiment of the present application.

Figure 11 is a schematic diagram of a communication device 10 provided by an embodiment of the present application.

FIG. 12 is a schematic diagram of a communication device 20 provided by an embodiment of the present application.

FIG. 13 is a schematic diagram of a chip 30 according to an embodiment of the present application.

Detailed ways

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

The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: global system of mobile communication (GSM) system, code division multiple access (code division multiple access, CDMA) system, broadband code division multiple access (wideband code division multiple access, WCDMA) system, general packet radio service (GPRS), long term evolution (long term evolution, LTE) system, LTE frequency division duplex (FDD) system, LTE Time division duplex (TDD), universal mobile telecommunication system (UMTS), global interoperability for microwave access (WiMAX) communication system, fifth generation (5G) systems, new radio (new radio, NR), fixed-mobile converged network systems or the future sixth generation (6th generation, 6G), etc.

The terminal equipment in the embodiment of this application may refer to user equipment, access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent or User device. The terminal device may also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a device with wireless communications Functional handheld devices, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in 5G networks or terminals in future evolved public land mobile communications networks (PLMN) Equipment, etc., the embodiments of this application are not limited to this.

The network device in the embodiment of the present application may be a radio access network (RAN) node or device used to connect the terminal device to the wireless network, which may also be called a base station. The network device may be a Global Mobile Communications A base transceiver station (BTS) in a (global system of mobile communication, GSM) system or code division multiple access (CDMA), or a wideband code division multiple access (WCDMA) ) base station (NodeB, NB) in the system, it can also be an evolutionary base station (evolutional NodeB, eNB or eNodeB) in the LTE system, or it can be a wireless wireless access network (cloud radio access network, CRAN) scenario The controller, or the network device may be a relay station, an access point, a vehicle-mounted device, a wearable device, a network device in a 5G network or a network device in a future evolved PLMN network, etc., which are not limited by the embodiments of this application.

Figure 1 is a schematic diagram of the application scenario of the embodiment of the present application. As shown in Figure 1, in the embodiment of the present application, data communication between terminal devices can be carried out through network equipment, or the terminal equipment can directly communicate with the terminal equipment without the help of network equipment. communication between. Based on this, two communication links can be established between the remote terminal and the base station (must be a single base station) at the same time. One is a direct link for direct communication through the Uu port, and the other is a direct link for communication between the relay terminal and the base station. indirect link. The remote terminal can send and receive the same or different data on two links at the same time, thereby improving the throughput and reliability of data sending and receiving.

Remote terminals and relay terminals can communicate through ideal links that are not defined by 3GPP. This communication method is also called terminal equipment aggregation (UE aggregation). Ideal links that are not defined by 3GPP include WiFi. , wired, Bluetooth, etc.

Broadcast, unicast, and multicast are supported on the non-3GPP-defined ideal link between the remote terminal and the relay terminal.

Broadcast communication is similar to the base station broadcasting system information, that is, the terminal device sends broadcast service data to the outside without encryption. Any other terminal device within the effective reception range can receive the broadcast service data if it is interested in the broadcast service.

Unicast communication is similar to the data communication carried out after the RRC connection is established between the terminal device and the base station, and a unicast connection needs to be established between the two terminal devices first. After establishing a unicast connection, the two terminal devices can communicate data based on the negotiated identification. The data may be encrypted or unencrypted. Compared with broadcast, in unicast communication, unicast communication can only be carried out between two terminal devices that have established a unicast connection.

Multicast communication refers to the communication between all UEs in a communication group. Any UE in the group can send and receive data of the multicast service.

In this embodiment of the present application, the first terminal device and the second terminal device are located within the cell coverage of the same network device. The first terminal device communicates with the base station through two links: one is directly connected to the network device ( direct) Uu link, and the other is an indirect (indirect) link relayed through the second terminal device. There may be a sidelink connection between the first terminal device and the second terminal device, or there may be a non-3GPP defined connection, that is, the first terminal device and the second terminal device are connected through a non-3GPP wired or wireless link. For example, A connection can be established between the first terminal device and the second terminal device through WiFi, wired, Bluetooth, etc. In this embodiment of the present application, the first terminal device may also be called a service user equipment (SUE) or a remote terminal device (remote UE), and the second terminal device may also be called a collaboration terminal device (cooperation terminal equipment). user equipment,

CUE), relay terminal equipment (relay UE), and network equipment can also be called base stations.

It should be noted that in the embodiment of this application, the second terminal device is a terminal device that supports providing relay services for SUE by establishing an indirect link, and may be called a CUE or a helper UE. , this application does not limit this

Figure 2 is a schematic flowchart of a method 200 according to an embodiment of the present application. The specific content is as follows.

S210: The SUE generates first identification information, which is used to indicate the candidate CUE.

It should be noted that in this embodiment of the present application, the SUE may generate one or more first identification information for one or more candidate CUEs, where one first identification information corresponds to one candidate CUE, and different candidate CUEs correspond to the first identification information. Depending on the identification information, this application does not limit the number of candidate CUEs.

For example, assuming that there are 10 candidate CUEs and the SUE generates an index indication, multiple candidate CUEs may be assigned indexes 0-9.

In a possible implementation manner, before generating the first identification information, the SUE searches for or senses candidate CUEs within a certain range. Specifically, there is a connection between the candidate CUE and the SUE, or a connection can be established between the candidate CUE and the SUE through a connection establishment process, or the SUE receives information sent by the candidate CUE indicating that the candidate CUE can provide relay services, wherein, the The information may include CUE authorization information.

The SUE can search or sense candidate CUEs within a certain range. For example, the SUE broadcasts a search message to the surroundings. If it receives a reply message fed back by the candidate CUE, the candidate CUE is found.

After the SUE generates the first identification information, it may send the first identification information to the corresponding candidate CUE for identifying the corresponding candidate CUE.

In a possible implementation manner, the SUE may also send second identification information to the candidate CUE, and the second identification information is used to uniquely identify the SUE in the base station.

For example, the second identification information may be a local identification (local ID) assigned to the SUE by the base station or the C-RNTI of the SUE. Among them, the local ID is used for uplink and downlink routing of SUE data. Specifically, taking uplink transmission as an example, the SRAP layer of the SUE will include the local ID of the SUE and the bearer ID of the SRB or DRB where the data is located (SRB ID) in the SRAP header of the data. or DRB ID); after CUE receives the data, it identifies the local ID information and bearer ID information in the SRAP header, and submits the data to the corresponding Uu Relay RLC channel according to the SRAP configuration information configured by the base station for CUE; the base station side receives the data Afterwards, the SRAP layer of the base station parses the local ID and bearer ID information carried in the SRAP header and submits the data to the PDCP entity corresponding to the SUE.

In the embodiment of this application, the first identification information and the second identification information may be sent in one message, or they may be sent separately. This application does not limit this. When sent separately, this application does not limit the order in which the first identification information and the second identification information are sent.

S220: The SUE sends first information to the base station, where the first information includes the first identification information. The first information is used to request the base station to determine a target CUE from candidate CUEs for the SUE.

It should be noted that the first information may include one or more first identification information, and this application does not limit the number of first identification information in the first information.

In a possible implementation, the SUE receives third identification information from the candidate CUE, the first information also includes third identification information, and the third identification information is used to indicate the cell where the candidate CUE resides.

Exemplarily, the third identification information may include the base station ID.

In a possible implementation, the first information also includes the uplink transmission capability (such as transmission bandwidth) of the candidate terminal equipment, SUE At least one of the link quality between the candidate terminal device and the candidate terminal device, and the load of the candidate terminal device.

In a possible implementation, the candidate terminal devices can also be sorted in the first information of the SUE. For example, according to the uplink transmission capability of the candidate terminal device or the link quality between the SUE and the candidate terminal device, from high to high Sort to lowest.

In a possible implementation, the time when the SUE sends the first information can be decided by the SUE. For example, when the uplink throughput of the SUE is less than a certain threshold, or the data transmission delay is greater than a certain threshold, or the packet loss rate is too high When a certain threshold is reached, the SUE sends the first information.

In a possible implementation, the SUE can also report according to the instructions of the base station. For example, the base station can send an indication message to the SUE, instructing the SUE to report the surrounding available candidate terminal equipment, that is, send the first message to the base station. information.

Further, the base station may also indicate the maximum number of candidate terminal devices to report; or the reporting period for the SUE to report the surrounding available candidate terminal devices; or indicate the triggering conditions for the SUE to report. For example, the base station may indicate when the signal of the Uu port of the SUE When the quality is less than a certain threshold, it triggers the reporting of available candidate terminal devices in the surrounding area.

The base station can determine the target CUE for the SUE. For example, the base station can select the candidate CUE with the strongest uplink transmission capability, the candidate CUE with the smallest load, or the candidate CUE with the smallest energy saving requirement as the target CUE.

After the base station determines the target CUE for the SUE, it will send the first indication information to the SUE. The first indication information indicates the target CUE. The target CUE is the CUE determined by the base station from the candidate CUE for the SUE based on the first information. The target CUE is used for the SUE. Provides data relay.

The first indication information includes first identification information of the target CUE.

For example, the first indication information may be RRC configuration information.

In a possible implementation, the first indication information may also include adaptation layer configuration information, and the adaptation layer configuration information may indicate bearer configurations transmitted to the base station through the relay link on the SUE and bearer configurations transmitted directly to the base station. The local ID assigned to the SUE by the base station can also be included in the adaptation layer configuration information.

In this embodiment of the present application, the base station will also receive the first identification information and the second identification information sent by the CUE. It should be noted that the CUE here may be a candidate CUE or a target CUE.

In a possible implementation manner, the candidate CUE actively sends the corresponding first identification information and second identification information to the base station.

In a possible implementation manner, after receiving the first indication information from the base station, the SUE sends trigger information to the target CUE, and triggers the target CUE to send the first identification information and the second identification information of the target CUE to the base station.

Specifically, before the CUE sends the first identification information and the second identification information to the base station, the SUE can also obtain the RRC status of the CUE. If the CUE is in the connected state, the CUE directly sends the first identification information and the second identification information to the base station. Identification information; if the CUE is in the idle state (idle) or inactive state (inactive), the CUE enters the connected state under the instruction of the SUE and then sends the first identification information and the second identification information to the base station, wherein the candidate CUE is in the idle state. The state or inactive state means that the candidate CUE has not established a communication link with the base station.

In a possible implementation, the above-mentioned first indication information is also used to indicate the RRC status of the target CUE, for example, indicating whether it is in the idle state or the inactive state. If the target CUE is in the idle state or the inactive state, the SUE sends a request to the target CUE. The CUE sends third indication information, which instructs the target CUE to establish a communication link with the base station and enter the connected state.

In a possible implementation, the SUE receives second information from the candidate or target CUE. The second information is used to indicate the RRC status of the candidate or target CUE, for example, indicating whether it is in an idle state or an inactive state. If the candidate Or the target CUE is in an idle state or an inactive state, the SUE sends third indication information to the candidate or target CUE. The third indication information instructs the candidate or target CUE to establish a communication link with the base station and enter the connected state.

After entering the connected state, the CUE reports the first identification information and the second identification information. The base station determines the target CUE based on the first identification information and the second identification information reported by the CUE, and sends the second indication information to the target CUE. The second indication The information is used to instruct the target CUE to provide relay services for the SUE, and the second indication information may include configuration required for relay.

The second indication information includes the SUE's local ID, adaptation layer configuration information, and Uu Relay RLC channel configuration information. The adaptation layer configuration information may include the mapping relationship between the SUE's bearer and the Uu Relay RLC channel. The local ID may be used for Indicates the corresponding configuration for the relayed SUE.

In the embodiment of this application, the SUE generates first identification information for the candidate CUE, and sends the first identification information to the base station. The base station can determine the target CUE as the relay device based on the first information. The SUE and the target CUE can identify each other through the first identification information, and the first identification information is sent to the base station through the CUE so that the base station can identify the target CUE. In the embodiment of this application, the base station passes The SUE sends the bearer configuration on the multi-hop path and the configuration required for the relay to the target CUE, so that the SUE can communicate with the base station directly or through the target CUE, thereby improving the throughput and reliability of data transmission and reception. .

Figure 3 is a schematic flowchart of a method 300 according to an embodiment of the present application. The specific content is as follows.

S310: The SUE receives first identification information from the candidate CUE, where the first identification information is used to indicate the candidate CUE, where the first identification information is sent by the base station to the candidate CUE.

It should be noted that in this embodiment of the present application, the base station may generate one or more first identification information for one or more candidate CUEs, where one first identification information corresponds to one candidate CUE, and different candidate CUEs correspond to first identification information. Depending on the identification information, this application does not limit the number of candidate CUEs.

In a possible implementation manner, the SUE may also receive third identification information from the candidate CUE, where the third identification information is used to indicate the cell where the candidate CUE resides.

Exemplarily, the first identification information may include the base station ID.

In this embodiment of the present application, the first identification information and the third identification information may be in one piece of information, or they may be separated in different pieces of information, which is not limited in this application. When they are separated into different pieces of information, this application does not limit the order in which the first identification information and the third identification information are sent.

S320: The SUE sends first information to the base station, where the first information includes the first identification information. The first information is used to request the base station to determine a target CUE from candidate CUEs for the SUE.

It should be noted that the first information may include one or more first identification information, and this application does not limit the number of first identification information in the first information.

In a possible implementation manner, the first information also includes third identification information, and the third identification information is used to indicate the cell where the candidate CUE resides.

After the SUE sends the first information, it may also receive the first indication information from the base station, and the first indication information indicates the target CUE,

The target CUE is a CUE determined by the base station from candidate CUEs for the SUE according to the first information.

The first indication information includes first identification information of the target CUE.

For example, the first indication information may be RRC configuration information.

In a possible implementation, the first indication information may also include adaptation layer configuration information, and the adaptation layer configuration information may indicate bearers transmitted to the base station through the relay link and bearers transmitted directly to the base station on the SUE. The local ID assigned to the SUE by the base station can also be included in the adaptation layer configuration information.

In a possible implementation, the first information also includes at least one of the uplink transmission capability (such as transmission bandwidth) of the candidate terminal device, the link quality between the SUE and the candidate terminal device, and the load of the candidate terminal device.

In a possible implementation, the candidate terminal devices can also be sorted in the first information of the SUE. For example, according to the uplink transmission capability of the candidate terminal device or the link quality between the SUE and the candidate terminal device, from high to high Sort to lowest.

In a possible implementation, the time when the SUE sends the first information can be decided by the SUE. For example, when the uplink throughput of the SUE is less than a certain threshold, or the data transmission delay is greater than a certain threshold, or the packet loss rate is too high When a certain threshold is reached, the SUE sends the first information.

In a possible implementation manner, the SUE can also report according to the instructions of the base station. For example, the base station can send an indication message to the SUE, indicating that the SUE can report the surrounding available candidate terminal devices.

Furthermore, it can also indicate the maximum number of reported candidate terminal devices; or the reporting period for the SUE to report the surrounding available candidate terminal devices; or just the triggering condition for the SUE to report. For example, the base station can indicate when the signal quality of the SUE's Uu port is When it is less than a certain threshold, it triggers the reporting of available candidate terminal devices in the surrounding area.

The base station can determine the target CUE for the SUE. For example, the base station can select the candidate CUE with the strongest uplink transmission capability, the candidate CUE with the smallest load, or the candidate CUE with the smallest energy saving requirement as the target CUE.

In this embodiment of the present application, the base station may also send second indication information to the target CUE. The second indication information is used to instruct the target CUE to provide relay services for the SUE.

The second indication information includes the SUE's local ID, adaptation layer configuration information, and Uu Relay RLC channel configuration information. The adaptation layer configuration information may include the mapping relationship between the SUE's bearer and the Uu Relay RLC channel. The local ID may be used for Indicates the corresponding configuration for the relayed SUE.

In this embodiment of the present application, the base station allocates an identity to the candidate CUE and sends it to the SUE through the candidate CUE, so that the SUE and the candidate CUEs can identify each other. Further, the base station sends the bearer configuration on the multi-hop path to the SUE and sends the configuration required for the relay to the target CUE, so that the SUE can communicate with the base station directly or through the CUE, thereby improving Throughput and reliability of data sending and receiving.

Figure 4 is a schematic flowchart of a method 400 according to an embodiment of the present application. In this embodiment of the present application, the candidate CUE is in an idle state or an inactive state, that is, the candidate CUE has not established a connection with the base station.

Optionally, S410, the candidate CUE sends a cell identifier to the SUE, and the cell identifier may include a base station ID.

In a possible implementation manner, the candidate CUE may periodically send cell identifiers to surrounding SUEs.

In a possible implementation manner, the candidate CUE sends the cell identifier to the SUE after receiving the SUE's request.

In the embodiment of this application, the candidate CUE may send the cell identity through broadcast, unicast or multicast, which is not limited in this application.

S420: The SUE allocates an index (index) to the candidate CUE, and each index can uniquely represent a candidate CUE.

In a possible implementation, the index can be generated and maintained by the RRC layer of the SUE.

In a possible implementation, the index can also be maintained by the adaptation layer, where the adaptation layer is the protocol layer between the 3GPP and non-3GPP protocol stacks and is used for adaptation between the 3GPP protocol and the non-3GPP protocol.

In a possible implementation, the index can also be generated by the non-3GPP protocol layer of the SUE and submitted to the 3GPP protocol layer.

S430, SUE obtains the SUE identifier.

For example, the SUE identity may be a local ID assigned to the SUE by the base station. The base station may allocate the local ID to the SUE after the SUE accesses the base station. The SUE identity may also be the C-RNTI of the SUE.

It should be noted that in the embodiment of the present application, steps S410, S420, and S430 are performed in no particular order.

For example, the SUE may perform step S420 after step S430.

S440: The SUE sends the corresponding index and SUE identification to the candidate CUE.

The corresponding index and SUE identifier sent by the SUE to the candidate CUE can be carried in an RRC message or RRC container, and sent to the candidate CUE through non-3GPP.

Specifically, the SUE identification and index can be carried in the form of IE in an RRC message and sent to the candidate CUE; the SUE identification and index information can also be included in the RRC container, and the RRC container is carried in the RRC message and sent to the candidate CUE.

In a possible implementation, the corresponding index and SUE identification sent by the SUE to the candidate CUE can also be carried in the adaptation layer PDU (such as the adaptation layer control PDU). For example, the SUE identification can be carried in the adaptation layer. In the PDU header, the candidate CUE should establish an adaptation layer entity after receiving the data, receive and parse the information in the data packet header.

S450: The SUE sends first information to the base station. The first information includes one or more information groups, each information group corresponds to a candidate CUE, and each information group includes the index of a candidate CUE and its corresponding cell identifier.

Optionally, S460, the base station selects the target CUE from the candidate CUE according to the first information.

S470. The base station sends an RRC configuration message to the SUE, including the index of the selected CUE and the configuration information under the UE aggregation architecture, such as the adaptation layer configuration. The adaptation layer configuration can indicate which bearers of the SUE transmit data through the relay link and the base station. If in step 430, the SUE identification is not the local ID of the SUE, the RRC configuration information also includes the local ID of the SUE; otherwise, The local ID may be included in the optional information in the RRC configuration information, or may not be included.

S480: The SUE sends instruction information to the target CUE, instructing the target CUE to establish a connection with the base station.

Specifically, before sending indication information to the target CUE, the SUE needs to know the RRC status of the target CUE, such as whether it is in an idle state or an inactive state.

In a possible implementation manner, the base station indicates the RRC status of the target CUE to the SUE.

In a possible implementation manner, the target CUE sends the RRC status of the target CUE to the SUE.

S490: The target CUE establishes a connection with the base station and sends the corresponding index and SUE identification to the base station.

S4100, the base station sends an RRC configuration message to the selected CUE, which contains the SUE identification information, the adaptation layer configuration information and the configuration of the Uu Relay RLC channel. The adaptation layer configuration information may include the space between the SUE's bearer and the Uu Relay RLC channel. mapping relationship. The SUE identification can be used to indicate which SUE's data the corresponding configuration is used to relay. The RRC configuration information also includes the local ID of the SUE.

In the embodiment of this application, the CUE is initially in an idle state or an inactive state. The SUE allocates an index to the candidate CUE and sends it to the base station. Then the base station determines the index of the target CUE as a relay device and sends it to the SUE. The SUE instructs the target CUE to enter. activation state, after entering the active state, the target CUE sends an index to the base station so that the base station can identify the target CUE. The base station sends the bearer configuration on the multi-hop path to the SUE and the configuration required for the relay to the target CUE, so that the SUE can communicate with the base station directly or through the target CUE, thereby improving the throughput of data transmission and reception. efficiency and reliability.

Figure 5 is a schematic flowchart of a method 500 according to an embodiment of the present application. Different from the above method 400, in this embodiment of the present application, the candidate CUE is in a connected state, that is, the candidate CUE has established a connection with the base station.

For S510-S540, please refer to the description of steps S410-S440 in the above-mentioned method 400, which will not be described again in the embodiment of this application.

Optionally, in S550, the candidate CUE receives the index and SUE identification sent by the SUE in S540, and sends the corresponding index and SUE identification to the base station.

S560: The SUE sends first information to the base station. The first information includes one or more information groups, each information group corresponds to a candidate CUE, and each information group includes the index of a candidate CUE and its corresponding cell identifier.

For S570-S580, please refer to the description of steps S460-S470 in the above-mentioned method 400, which will not be described again in the embodiment of this application.

S590, the base station sends an RRC configuration message to the selected CUE, which includes the local ID of the SUE, the adaptation layer configuration information, and the configuration of the Uu Relay RLC channel. The adaptation layer configuration information may include the bearer of the SUE and the Uu Relay RLC channel. Mapping relationship, if the SUE identification information does not include the SUE's local ID, the RRC configuration message also includes the SUE identification information.

If step S550 is not performed, before step S590 is performed, the SUE triggers the target CUE to send the corresponding index and SUE identification to the base station.

In the embodiment of this application, the CUE is initially in an active state, and the SUE allocates an index to the candidate CUE and sends it to the base station. The base station can determine the index of the target CUE as a relay device and send it to the SUE. The target or candidate CUE receives the index from the SUE. and SUE identification, send the index and SUE identification information to the base station so that the base station can identify the target CUE. The base station sends the bearer configuration on the multi-hop path to the SUE and the configuration required for the relay to the target CUE, so that the SUE can communicate with the base station directly or through the target CUE, thereby improving the throughput of data transmission and reception. efficiency and reliability.

Figure 6 is a schematic flowchart of a method 600 according to an embodiment of the present application. Different from the above methods 400 and 500, in the method 600 according to this embodiment of the present application, the base station will identify the target CUE. For example, the base station may assign a temporary ID to the target CUE. , this temporary ID is unique within the base station.

For S610-S630, refer to the description of steps S410, S420 and S450 in the above-mentioned method 400, which will not be described again in the embodiment of this application.

S640: The base station selects the target CUE from the candidate CUE according to the first information, and configures a temporary ID for the target CUE. The temporary ID is unique within the base station.

S650, the base station sends RRC configuration information to the SUE, including the local ID of the SUE, the index of the CUE, and may also include the temporary ID configured for the target CUE, and the configuration information under the UE aggregation architecture, such as the adaptation layer configuration. The adaptation layer configuration can indicate which bearers of the SUE transmit data through the relay link and the base station.

The SUE's local ID can also be sent to the SUE in advance, and this application embodiment does not limit this.

S660: The SUE sends the temporary ID configured by the base station for the target CUE or the local ID of the SUE to the target CUE.

S670: The target CUE sends the temporary ID configured by the base station for the target CUE or the local ID of the SUE to the base station.

S680, the base station determines that the CUE is the target CUE selected by the SUE based on the temporary ID configured by the target CUE or the local ID of the SUE sent by the target CUE to the base station, and then sends an RRC configuration message to the selected CUE, which includes the local ID of the SUE, Adaptation layer configuration information and Uu Relay RLC channel configuration. The adaptation layer configuration information can include the mapping relationship between the bearer of the SUE and the Uu Relay RLC channel.

In this embodiment of the present application, the base station determines the target CUE based on the identity of the candidate CUE reported by the SUE and assigns a temporary identity to the target CUE. The target CUE sends the temporary identity to the base station so that the base station can identify the target CUE. The base station sends the bearer configuration on the multi-hop path to the SUE and the configuration required for the relay to the target CUE, so that the SUE can communicate with the base station directly or through the target CUE, thereby improving the throughput of data transmission and reception. efficiency and reliability.

Figure 7 is a schematic flowchart of method 700 according to an embodiment of the present application. The specific content is as follows. Different from the above methods 400-600, in this embodiment of the present application, the base station allocates identification information to the CUE instead of the SUE allocating identification information to the CUE.

S710: The base station allocates a temporary ID to the candidate CUE and sends the temporary ID to the corresponding candidate CUE.

S720: The candidate CUE sends the temporary ID of the candidate CUE to the SUE. Optionally, the candidate CUE also sends a cell identifier to the SUE. The cell identifier may include the base station ID.

In a possible implementation manner, the candidate CUE may periodically send cell identifiers to surrounding SUEs.

In a possible implementation manner, the candidate CUE sends the cell identifier to the SUE after receiving the SUE's request.

For S730, please refer to the description of step S430 in the above-mentioned method 400, which will not be described again in the embodiment of this application.

S740: The SUE sends the SUE identifier to the candidate CUE.

The SUE identifier sent by the SUE to the candidate CUE can be carried in an RRC message or RRC container and sent to the candidate CUE through non-3GPP.

Specifically, the SUE identifier can be carried in the form of IE and sent to the candidate CUE in the RRC message; the SUE identifier can also be included in the RRC container, and the RRC container is carried in the RRC message and sent to the candidate CUE.

In a possible implementation, the SUE identifier sent by the SUE to the candidate CUE can also be carried in the adaptation layer PDU (such as the adaptation layer control PDU). For example, the SUE identifier can be carried in the adaptation layer PDU header. After receiving the data, the candidate CUE should establish an adaptation layer entity, receive and parse the information in the header of the data packet.

For S750-S760, please refer to the description of steps S450-S460 in the above-mentioned method 400, which will not be described again in the embodiment of this application.

S770, the base station sends RRC configuration information to the SUE, including the temporary ID of the target CUE and the local ID of the SUE, as well as configuration information under the UE aggregation architecture, such as adaptation layer configuration. The adaptation layer configuration can indicate which bearers of the SUE transmit data through the relay link and the base station.

S780, the base station sends an RRC configuration message to the target CUE, which includes the SUE identifier, adaptation layer configuration information, and Uu Relay RLC channel configuration. The adaptation layer configuration information may include the mapping relationship between the bearer of the SUE and the Uu Relay RLC channel. The SUE identifier can be used to indicate which SUE's data the corresponding configuration is used to relay. If the SUE identifier is not the local ID of the SUE, the RRC configuration information also includes the local ID of the SUE.

In the embodiment of this application, the base station allocates a temporary ID to the candidate CUE and sends it to the candidate CUE. The SUE sends the SUE identifier to the target CUE, so that the SUE and the target CUE can identify each other, and the base station can also identify the target CUE. The base station sends the bearer configuration on the multi-hop path to the SUE and the configuration required for the relay to the target CUE, so that the SUE can communicate with the base station directly or through the target CUE, thereby improving the throughput of data transmission and reception. efficiency and reliability.

Figure 8 is a schematic flowchart of the method 800 according to an embodiment of the present application. The specific content is as follows. In this embodiment of the present application, the base station also allocates identification information to the CUE. The difference from the method 700 is that in the method 800, the SUE will provide the target CUE after determining the target CUE. The target CUE sends the local ID of the SUE without sending the SUE identification to the candidate CUE in advance.

For S810-S850, please refer to the description of steps S710-S720 and S750-S770 in the above-mentioned method 700, which will not be described again in the embodiment of this application.

Optionally, S860, the SUE sends the local ID to the target CUE.

S870, the base station sends an RRC configuration message to the target CUE, which includes the local ID of the SUE, the adaptation layer configuration information, and the configuration of the Uu Relay RLC channel. The adaptation layer configuration information may include the mapping between the bearer of the SUE and the Uu Relay RLC channel. relation. The SUE identification may be used to indicate which SUE's data the corresponding configuration is used to relay.

It should be noted that in the above methods 200-800, the base station may select one or more target CUEs.

In the embodiment of this application, the base station allocates and sends an identifier to the candidate CUE, and the SUE sends a local ID to the target CUE, so that the SUE and the target CUE can identify each other, and the base station can identify the target CUE. The base station sends the bearer configuration on the multi-hop path to the SUE and the configuration required for the relay to the target CUE, so that the SUE can communicate with the base station directly or through the target CUE, thereby improving the throughput of data transmission and reception. efficiency and reliability.

Figure 9 is a schematic flowchart of a method 900 according to an embodiment of the present application. Method 900 is used in a scenario where SUE and CUE can be in different base stations. This scenario includes multiple SUEs, and each SUE corresponds to a base station. For ease of description, SUE1 and SUE2 are taken as examples for description in the embodiment of this application. SUE1 and SUE2 Branches are connected to base station 1 and base station 2. SUE1 and SUE2 determine the target CUE according to any one of the above methods 200-800, and the target CUE determined by SUE1 and SUE2 is the same. The target CUE is connected to base station 3 or resides on base station 3. Below, it should be understood that this application does not limit the number of SUEs.

S910: Determine the target CUE according to any one of the above methods 200-800, determine the target CUE1 for SUE1, and determine the target CUE2 for SUE2.

S920: Base station 1 sends first indication information to the base station of target CUE1, indicating that target CUE1 is the relay device of SUE1. The first indication information includes the local ID1 of SUE1 and/or the index1 assigned by SUE1 to CUE1.

S930: Base station 2 sends second indication information to the base station of target CUE2, indicating that target CUE2 is the relay device of SUE2. The second indication information includes the local ID2 of SUE2 and/or the index2 assigned by SUE2 to CUE2.

If target CUE1 and target CUE2 are both within the service range of the same base station 3, and local ID1 and local ID2 are the same, base station 3 updates local ID1 and changes local ID1 to local ID3, and local ID1 and local ID3 are different.

S940, base station 3 sends the updated local ID3 to base station 1.

S950, base station 1 sends the updated local ID3 to SUE1.

S960, base station 3 sends local ID3 to target CUE1.

It should be understood that in the above steps 940 to 950, the base station 3 may also assign local ID3 to the base station 2 and the target CUE2, and this application does not limit this.

The embodiments of this application can be applied in the scenario where multiple SUEs select a CUE. When multiple SUEs select the same CUE and indicate the CUE with the same identifier, the CUE cannot distinguish the SUE corresponding to the data carried. Implementation through this application For example, the CUE can correctly distinguish the SUE corresponding to the data carried in this scenario.

Figure 10 is a schematic flowchart of a method 1000 according to an embodiment of the present application. In method 1000, the relationship between SUE and CUE is bound, that is, CUE can provide a relay connection for a specific SUE. For example, SUE and CUE are a user's gaming device and mobile phone device respectively; or, SUE CUE and CUE are two camera devices on the same vehicle when they leave the factory, and their relationship is fixed. Before establishing terminal equipment aggregation (UE aggregation), CUE does not provide relay services for SUE. CUE and SUE may be connected to different base stations. However, when SUE requires CUE to provide relay services, a certain mechanism needs to be used to ensure that CUE and SUE are connected to each other. underneath a base station.

In the method 1000 of the embodiment of this application, the SUE and the CUE reside under different base stations. The SUE is connected to and communicates with the first base station. The CUE resides under the second base station. The CUE may be in RRC connected state, inactive state or idle state. .

S1010. Based on the binding relationship between the SUE and the CUE, the SUE sends first information to the CUE, where the first information is used to indicate the cell where the SUE resides or the connected base station. For example, the first information may include NR cell identity (NR cell identity, NCI) or NR cell global identifier (NR cell global identifier, NCGI). Further, it may also include base station information where the cell is located.

In this embodiment of the present application, the SUE may send the first information through unicast, multicast or broadcast.

In a possible implementation manner, the SUE may periodically transmit the first information, and this application does not limit the setting of the transmission period.

In a possible implementation manner, the SUE may transmit the first information in an event-triggered manner.

For example, the SUE may send the first information when the packet loss or delay of the uplink transmission rate exceeds a certain threshold, or the uplink transmission bandwidth is far smaller than the SUE's transmission requirements.

Further, the first information may also include first indication information. The first indication information is used to indicate whether the SUE has a need to establish a UE aggregation service. The first indication information may indicate whether the SUE needs to establish a UE aggregation service in an explicit or implicit manner. There is a need to establish UE aggregation services.

For example, there is a data bit in the first indication information. If the data bit is 1, it indicates that the SUE has a need to establish a UE aggregation service; if the data bit is 0, it indicates that the SUE has no need to establish a UE aggregation service.

For example, if the SUE sends the first information to the CUE, it implies that the SUE has the need to establish the UE aggregation service; if the SUE does not send the first information to the CUE, it implies that the SUE does not have the need to establish the UE aggregation service.

In this embodiment of the present application, the first indication information may also be sent separately.

S1020: The CUE reports auxiliary information to the second base station according to the first information. The auxiliary information is used to indicate the cell where the SUE resides or the connected base station. The auxiliary information may include all or part of the first information.

Optionally, before reporting the auxiliary information to the second base station, the CUE can first use the first information to confirm whether it is in the same base station as the SUE. If it is in the same base station, the subsequent process will not be triggered; if it is in a different base station, Within the site, the subsequent process will be triggered.

S1030: The second base station decides to handover the CUE to the first base station where the SUE is camped.

S1040: The second base station sends handover request information to the first base station according to the auxiliary information sent by the CUE, requesting to handover the CUE to the first base station.

S1050. The first base station sends a handover request reply message to the second base station, which contains the RRC configuration information of the CUE under the first base station.

S1060: The second base station sends the CUE's RRC configuration information under the first base station to the CUE.

S1070: According to the received RRC configuration information, the CUE disconnects from the second base station and connects to the first base station according to the RRC configuration.

Optionally, after S1070, the base station may send an indication message to the SUE to instruct the CUE to switch to the first base station.

S1080: The SUE sends first request information to the first base station. The first request information is used to request the first base station to configure UE aggregation. The first request information includes the identification information of the CUE.

S1090. The first base station sends RRC configuration information to SUE and CUE respectively. The RRC configuration information is used to establish UE aggregation for SUE.

In the embodiment of this application, the SUE sends its own base station information to the CUE and instructs the CUE to switch to its own base station, so that the CUE can provide a relay for the SUE to establish the UE aggregation of the SUE, so that the SUE can directly It communicates with the base station and can communicate with the base station through the target CUE, thereby improving the throughput rate and reliability of data transmission and reception.

It should be noted that in the embodiment of this application, the SUE can also obtain the identification information of the CUE's cell or base station, and instruct its own base station to switch the SUE to the CUE's base station. The process is similar to the above method, and will not be described in detail in this application. .

According to the foregoing method, FIG. 11 is a schematic diagram of a communication device 10 provided by an embodiment of the present application. As shown in FIG. 11 , the device 10 may be a terminal device (for example, the above-mentioned first terminal device), or may be a chip or circuit, such as It can be installed in the chip or circuit of the terminal device. Wherein, the terminal device may correspond to the terminal device in the above method.

The device 10 may include a processor 11 (ie, an example of a processing unit) and a memory 12 . The memory 12 is used to store instructions, and the processor 11 is used to execute the instructions stored in the memory 12, so that the device 10 implements the steps performed by the terminal device (for example, the first terminal device) in the corresponding method as shown in Figure 2-10. step.

Further, the device 10 may also include an input port 13 (ie, an example of a communication unit) and an output port 14 (ie, another example of a communication unit). Further, the processor 11, the memory 12, the input port 13 and the output port 14 can communicate with each other through internal connection paths to transmit control and/or data signals. The memory 12 is used to store computer programs. The processor 11 can be used to call and run the computer program from the memory 12 to control the input port 13 to receive signals and the output port 14 to send signals to complete the terminal equipment in the above method. A step of. The memory 12 may be integrated into the processor 11 or may be provided separately from the processor 11 .

Optionally, if the device 10 is a terminal device, the input port 13 is a receiver, and the output port 14 is a transmitter. The receiver and transmitter may be the same or different physical entities. When they are the same physical entity, they can be collectively called transceivers.

Optionally, if the device 10 is a chip or a circuit, the input port 13 is an input interface, and the output port 14 is an output interface.

As an implementation method, the functions of the input port 13 and the output port 14 can be implemented through a transceiver circuit or a dedicated chip for transceiver. The processor 11 may be implemented by a dedicated processing chip, a processing circuit, a processor or a general-purpose chip.

As another implementation manner, a general-purpose computer may be considered to implement the terminal device provided in the embodiments of the present application. The program code that implements the functions of the processor 11, the input port 13, and the output port 14 is stored in the memory 12, and the general processor implements the functions of the processor 11, the input port 13, and the output port 14 by executing the code in the memory 12.

The functions and actions of each module or unit in the communication device 10 listed above are only exemplary. Each module or unit in the communication device 10 can be used to perform each action or process performed by the terminal device in the above methods 200-1000. Process, here, in order to avoid redundancy, its detailed description is omitted.

For the concepts, explanations, detailed descriptions and other steps involved in the device 10 related to the technical solutions provided by the embodiments of the present application, please refer to the descriptions of these contents in the foregoing methods or other embodiments, and will not be described again here.

According to the foregoing method, Figure 12 is a schematic diagram of a communication device 20 provided by an embodiment of the present application. As shown in Figure 12, the device 20 can be a network device (for example, the above-mentioned base station), or a chip or a circuit. For example, it can be disposed on Chips or circuits within network equipment. Wherein, the network device corresponds to the network device in the above method (for example, the above base station).

The device 20 may include a processor 21 (ie, an example of a processing unit) and a memory 22 . The memory 22 is used to store instructions, and the processor 21 is used to execute the instructions stored in the memory 22, so that the device 20 implements the steps performed by the network device (eg, base station) in the corresponding method in Figures 2-10.

Further, the device 20 may also include an input port 23 (ie, an example of a communication unit) and an output port 23 (ie, another example of a processing unit). Furthermore, the processor 21, the memory 22, the input port 23 and the output port 24 can communicate with each other through internal connection paths to transmit control and/or data signals. The memory 22 is used to store computer programs. The processor 21 can be used to call and run the computer program from the memory 22 to control the input port 23 to receive signals and the output port 24 to send signals to complete the above methods 200-1000. steps for network equipment. The memory 22 may be integrated into the processor 21 or may be separate from the processor 21 set up.

Optionally, if the device 20 is a network device, the input port 23 is a receiver, and the output port 24 is a transmitter. The receiver and transmitter may be the same or different physical entities. When they are the same physical entity, they can be collectively called transceivers.

Optionally, if the device 20 is a chip or a circuit, the input port 23 is an input interface, and the output port 24 is an output interface.

Optionally, if the device 20 is a chip or a circuit, the device 20 may not include a memory 22, and the processor 21 may read the instructions (program or code) in the memory external to the chip to implement the above-mentioned steps as shown in the figure. The functions of the network equipment in the corresponding method in 2-10.

As an implementation method, the functions of the input port 23 and the output port 24 can be implemented by a transceiver circuit or a dedicated chip for transceiver. The processor 21 may be implemented by a dedicated processing chip, a processing circuit, a processor or a general-purpose chip.

As another implementation manner, a general-purpose computer may be considered to implement the network device provided by the embodiments of the present application. That is, the program codes that implement the functions of the processor 21, the input port 23, and the output port 24 are stored in the memory, and the general-purpose processor implements the functions of the processor 21, the input port 23, and the output port 24 by executing the codes in the memory.

Each module or unit in the communication device 20 may be used to perform each action or process performed by the network device in the above methods 200-1000. Here, in order to avoid redundancy, its detailed description is omitted.

For the concepts, explanations, detailed descriptions and other steps involved in the device 20 related to the technical solutions provided by the embodiments of the present application, please refer to the descriptions of these contents in the foregoing methods or other embodiments, and will not be described again here.

FIG. 13 is a schematic diagram of a chip 30 according to an embodiment of the present application. The chip 30 (or can also be called a processing system) includes a logic circuit 31 and an input/output interface 32.

The logic circuit 31 may be a processing circuit in the chip 30 . The logic circuit 31 can be coupled to the storage unit and call instructions in the storage unit, so that the chip 30 can implement the methods and functions of various embodiments of the present application. The input/output interface 32 can be an input/output circuit in the chip 30, which outputs information processed by the chip 30, or inputs data or signaling information to be processed into the chip 30 for processing.

Specifically, for example, if the first terminal device is equipped with the chip 30, the logic circuit 31 is coupled with the input/output interface 32, the logic circuit 31 can send the first information through the input/output interface 32, and the first information can be the logic circuit 31 configured. For another example, if the network device is equipped with the chip 30, the logic circuit 31 is coupled with the input/output interface 32, and the logic circuit 31 can receive the first information through the input/output interface 32.

As a solution, the chip 30 is used to implement the operations performed by the terminal device in each of the above method embodiments.

For example, the logic circuit 31 is used to implement the processing-related operations performed by the terminal device in the above method embodiment; the input/output interface 32 is used to implement the sending and/or reception-related operations performed by the terminal device in the above method embodiment. operate.

As another solution, the chip 30 is used to implement the operations performed by the network device in each of the above method embodiments.

For example, the logic circuit 31 is used to implement the processing-related operations performed by the network device in the above method embodiment; the input/output interface 32 is used to implement the sending and/or reception-related operations performed by the network device in the above method embodiment. operate.

Embodiments of the present application also provide a computer-readable storage medium on which computer instructions for implementing the methods executed by the device in each of the above method embodiments are stored.

For example, when the computer program is executed by a computer, the computer can implement the method executed by the terminal device in each embodiment of the above method.

For another example, when the computer program is executed by a computer, the computer can implement the method executed by the network device in each embodiment of the above method.

Embodiments of the present application also provide a computer program product, which includes instructions. When the instructions are executed by a computer, the methods executed by devices (such as terminal devices and network devices) in the above method embodiments are implemented.

According to the method provided by the embodiment of the present application, the embodiment of the present application also provides a communication system, which includes the aforementioned network device and one or more terminal devices. Optionally, the system also includes a device that communicates with the aforementioned network device and/or terminal device.

It should be understood that the term "and/or" in this article is only an association relationship describing related objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A alone exists, and A and B exist simultaneously. , there are three situations of B alone. In addition, the character "/" in this article generally indicates that the related objects are an "or" relationship.

It should be understood that in the various embodiments of the present application, the size of the sequence numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its functions and internal logic, and should not be used in the embodiments of the present application. The implementation process constitutes any limitation.

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

Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be described again here.

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

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

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

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

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application. should be covered by the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims (33)

A communication method, applied to a first terminal device, characterized by including: Generate first identification information, the first identification information being used to indicate a second terminal device, the second terminal device being a candidate terminal device that provides relay services for the first terminal device; Send first information to a network device, where the first information includes the first identification information. A communication method, applied to a first terminal device, characterized by including: Receive first identification information from a second terminal device, the first identification information is used to indicate the second terminal device, and the second terminal device is a candidate terminal device that provides relay services for the first terminal device, so The first identification information is generated by the network device; Send first information to a network device, where the first information includes the first identification information. The method of claim 1, further comprising: The first identification information and the second identification information are sent to the second terminal device, and the second identification information is used to indicate the first terminal device. The method of claim 2, further comprising: Send second identification information to the second terminal device, where the second identification information is used to indicate the first terminal device. The method according to any one of claims 1 to 4, characterized in that there is a first connection between the first terminal device and the second terminal device, and the first connection is a non-3GPP defined connection. The method according to any one of claims 3 or 4, characterized in that the second identification information is used to uniquely identify the first terminal device in the network device. The method according to any one of claims 1 to 6, characterized in that the first information further includes: Third identification information, the third identification information is used to indicate the cell where the second terminal device is camped. The method according to any one of claims 1 to 7, characterized in that the method further includes: Receive first indication information from the network device, the first indication information is used to instruct the network device to select a second terminal device for the first terminal device, and the network device is the first terminal device. The selected second terminal device is used to provide relay for data transmission of the first terminal device. The method according to any one of claims 1 to 8, characterized in that the method further includes: Second information is received from the second terminal device, the second information is used to indicate whether there is a connection between the second terminal device and the network device. The method according to claim 8, characterized in that the first indication information is also used to indicate whether there is a connection between the second terminal device and the network device. The method according to claim 9 or 10, characterized in that, if it is determined that there is no connection between the second terminal device and the network device, the method further includes: Send third instruction information to the second terminal device, where the third instruction information is used to instruct the second terminal device to establish a connection with the network device. A communication method, applied to a second terminal device, characterized by including: Receive first identification information and second identification information from a first terminal device, the first identification information is used to indicate the second terminal device, and the second identification information is used to indicate the first terminal device, so The first identification information is generated by the first terminal device; Send the first identification information and the second identification information to a network device. A communication method, applied to a second terminal device, characterized by including: Receive first identification information from a network device, the first identification information is used to indicate the second terminal device, and the first identification information is generated by the network device; Send the first identification information to the first terminal device, where the first identification information is used by the first terminal device to report to the network device; Receive second identification information from the first terminal device, the second identification information is used to indicate the first terminal device, and the second identification information is allocated by the network device; Receive the second identification information from the network device. The method according to claim 12 or 13, characterized in that the first terminal device and the second terminal device are connected through a non-3GPP mode. The method according to any one of claims 12 to 14, characterized in that the second identification information is used to uniquely identify the first terminal device in the network device. The method according to any one of claims 12 to 15, characterized in that the method further includes: Send third identification information to the first terminal device, where the third identification information is used to indicate the cell where the second terminal device is camped. The method according to any one of claims 12 to 16, characterized in that the method further includes: Receive second indication information from the network device, the second indication information is used to instruct the second terminal device to provide a relay service for the first terminal device, the second indication information includes the first The second identification information of the terminal device. The method according to any one of claims 12 to 17, characterized in that the method further includes: Send second information to the first terminal device, where the second information is used to indicate whether there is a connection between the second terminal device and the network device. The method according to any one of claims 12 to 18, characterized in that if there is no connection between the second terminal device and the network device, the method further includes: Receive third indication information from the first terminal device, the third indication information being used to instruct the second terminal device to establish a connection with the network device; Establish a connection with the network device. A communication method, applied to network equipment, characterized by including: Receive first identification information and second identification information from a second terminal device, the first identification information is used to indicate the second terminal device, and the second identification information is used to indicate the first terminal device; First information is received from a first terminal device, where the first information includes the first identification information. A communication method, applied to network equipment, characterized by including: Send first identification information to the second terminal device, where the first identification information is used to indicate the second terminal device; First information is received from the first terminal device, where the first information includes the first identification information. The method according to claim 20 or 21, characterized in that, the method further includes: It is determined according to the first information that the second terminal device provides relay services for the first terminal device. The method according to any one of claims 20 to 22, characterized in that the method further includes: Send first indication information to the first terminal device, where the first indication information is used to instruct the second terminal device determined by the network device. The method according to claim 23, characterized in that the first indication information is also used to indicate whether there is a connection between the second terminal device and the network device. The method according to any one of claims 20 to 24, characterized in that the method further includes: Send second instruction information to the second terminal device, where the second instruction information is used to instruct the second terminal device to provide relay services for the first terminal device. The method according to any one of claims 20 to 25, characterized in that the first terminal device and the second terminal device are connected through a non-3GPP mode. The method according to any one of claims 20 or 26, characterized in that the second identification information is unique identification information in the network device. The method according to any one of claims 20 to 27, characterized in that the first information further includes: Third identification information, the third identification information is used to indicate the cell where the second terminal device is camped. A communication device, characterized in that it includes a processor and an interface circuit. The interface circuit is used to receive signals from other communication devices other than the communication device and transmit them to the processor or to transmit signals from the processor. The signal is sent to other communication devices other than the communication device, and the processor is configured to implement the method according to any one of claims 1 to 28. A communication system, characterized by including: Terminal equipment, used to perform the method according to any one of claims 1 to 19; Network equipment, used to perform the method according to any one of claims 20 to 28. A chip, characterized in that it includes: a processor, configured to call and run a computer program from a memory, so that a terminal device installed with the chip executes the method according to any one of claims 1 to 28. A computer program, characterized in that, when the computer program is executed by a communication device, the method according to any one of claims 1 to 28 is implemented. A computer-readable storage medium, characterized by including: A computer program is stored on the computer-readable storage medium. When the computer program is run, the computer is caused to perform the method according to any one of claims 1 to 28.