Transmission method, configuration method, and apparatus for remote UE, and electronic device

1 . A transmission method for a remote terminal UE, comprising:

obtaining configuration parameters for a PC5 interface for transmission of relay service from a network-side device; and

establishing, based on the obtained configuration parameters, a sidelink radio bearer SLRB and performing data transmission,

wherein the obtaining configuration parameters for a PC5 interface for transmission of relay service from a network-side device comprises:

obtaining the configuration parameters for the PC5 interface for transmission of relay service from the network-side device through a Uu radio resource control RRC message if the remote UE is in a connected state;

wherein before the obtaining the configuration parameters for the PC5 interface for transmission of relay service through a Uu RRC message, the method further comprises transmitting QoS parameters of a to-be-initiated service and relay indication information to the network-side device, wherein the QoS parameters of the to-be-initiated service are used to configure, for the remote UE, dedicated configuration parameters for the PC5 interface for transmission of a relay service,

wherein the configuration parameters for the PC5 interface for transmission of relay service comprises at least one sidelink SL radio bearer (SLRB) configuration and at least one radio link layer control protocol (RLC) bearer configuration,

wherein, the SLRB configuration comprises at least one of following:

an SL service data adaptation protocol (SDAP) configuration parameter; or

an SL packet data convergence protocol (PDCP) configuration parameter;

wherein the RLC bearer configuration comprises at least one of the following:

an RLC configuration parameter; or

a medium access control (MAC) configuration parameter;

wherein the obtaining configuration parameters for a PC5 interface for transmission of relay service from a network-side device or relay UE further comprises any one of the following:

obtaining the configuration parameters for the PC5 interface for transmission of relay service through a system information block SIB of the network-side device if the remote UE is in an idle state or inactive state;

obtaining the configuration parameters for the PC5 interface for transmission of relay service through a pre-configured message of the network-side device if the remote UE is in an offline state;

wherein in the SIB and pre-configured message, the configuration parameters for the PC5 interface for transmission of relay service comprise a sidelink SL radio bearer RB configuration list and an SL radio link layer control protocol RLC bearer configuration list;

wherein the SLRB configuration list comprises a first SLRB configuration list for UE-to-UE direct PC5 communication and a second SLRB configuration list for communication between the remote UE and the network-side device through the relay UE; and

the SL RLC bearer configuration list comprises a first RLC bearer configuration list for UE-to-UE direct PC5 communication and a second RLC bearer configuration list for communication between the remote UE and the network-side device through the relay UE.

2 . The transmission method for remote UE according to claim 1 , wherein the SLRB configuration list further comprises an index of the at least one SLRB configuration; and the SL RLC bearer configuration list further comprises an index of the at least one RLC bearer configuration, and an index of an SLRB configuration corresponding to the index of the RLC bearer configuration.

3 . The transmission method for remote UE according to claim 2 , wherein the SLRB configuration further comprises

a transmission range configuration parameter; and

the RLC bearer configuration further comprises

a physical layer configuration parameter.

4 . The transmission method for remote UE according to claim 1 , wherein the SLRB configuration comprises a plurality of SLRB configuration parameters, and at least one of the plurality of SLRB configuration parameters comprises a first SLRB configuration value for UE-to-UE direct PC5 communication and a second SLRB configuration value for communication between the remote UE and the network-side device through the relay UE; and

the RLC bearer configuration comprises a plurality of RLC configuration parameters, and at least one of the plurality of RLC configuration parameters comprises a first RLC bearer configuration value for UE-to-UE direct PC5 communication and a second RLC bearer configuration value for communication between the remote UE and the network-side device through the relay UE.

5 . The transmission method for remote UE according to claim 1 , wherein the SLRB configuration list comprises SLRB configurations for UE-to-UE direct PC5 communication, and the establishing, based on the obtained configuration parameters, an SLRB and performing data transmission comprises:

updating quality of service QoS parameters of a to-be-initiated service according to a protocol specification or a first updating parameter configured by the network-side device; and

looking up an SLRB configuration and an RLC bearer configuration by using the updated QoS parameters.

6 . The transmission method for remote UE according to claim 5 , wherein the looking up, based on QoS parameters, an SLRB configuration and an RLC bearer configuration comprises:

looking up, based on the QoS parameters, an SLRB configuration matching the QoS parameters in the SLRB configuration list, looking up, based on an index of the SLRB configuration, an index of a corresponding RLC bearer configuration, looking up, based on the index of the RLC bearer configuration, the corresponding RLC bearer configuration, and establishing, based on the found SLRB configuration and the found RLC bearer configuration, an SLRB and performing data transmission; and

using a default SLRB as a configured SLRB to perform data transmission if no SLRB configuration matching the QoS parameters is found in the SLRB configuration list.

7 . The transmission method for remote UE according to claim 1 , wherein the SLRB configuration list comprises SLRB configurations for UE-to-UE direct PC5 communication, and the establishing, based on the obtained configuration parameters, an SLRB and performing data transmission comprises:

looking up, based on QoS parameters of a to-be-initiated service, an SLRB configuration and an RLC bearer configuration that match the QoS parameters;

updating parameters in a found SLRB configuration and a found RLC bearer configuration according to a protocol specification or a second updating parameter configured by the network-side device; and

establishing an SLRB based on the updated parameters and performing data transmission.

8 . An electronic device, comprising a processor, a memory, and a program or instruction stored in the memory and capable of running on the processor, wherein when the program or instruction is executed by the processor, the processor is configured to execute the steps of the method according to claim 1 .

9 . A configuration method for a remote terminal UE, comprising:

transmitting configuration parameters for a PC5 interface for transmission of relay service to the remote UE through the following manner:

transmitting the configuration parameters for the PC5 interface for transmission of relay service to the remote UE through a Uu radio resource control RRC message,

wherein before the transmitting the configuration parameters for the PC5 interface for transmission of relay service to the remote UE through a Uu RRC message, the method further comprises: receiving quality of service QoS parameters of a to-be-initiated service reported by the remote UE,

wherein the QoS parameters of the to-be-initiated service are used to configure, for the remote UE, dedicated configuration parameters for the PC5 interface for transmission of a relay service,

wherein the configuration parameters for the PC5 interface for transmission of relay service comprises at least one sidelink SL radio bearer (SLRB) configuration and at least one RLC radio link layer control protocol (RLC) bearer configuration,

wherein, the SLRB configuration comprises at least one of following:

an SL service data adaptation protocol (SDAP) configuration parameter; or

an SL packet data convergence protocol (PDCP) configuration parameter;

wherein the RLC bearer configuration comprises at least one of the following:

an RLC configuration parameter; or

a medium access control (MAC) configuration parameter;

transmitting configuration parameters for a PC5 interface for transmission of relay service to the remote UE further through any one of the following manners:

transmitting the configuration parameters for the PC5 interface for transmission of relay service to the remote UE through a system information block SIB of a network-side device;

transmitting the configuration parameters for the PC5 interface for transmission of relay service to the remote UE through a pre-configured message;

wherein in the SIB and pre-configured message, the configuration parameters for the PC5 interface for transmission of relay service comprise a sidelink SL radio bearer RB configuration list and an SL radio link layer control protocol RLC bearer configuration list;

wherein the SLRB configuration list comprises a first SLRB configuration list for UE-to-UE direct PC5 communication and a second SLRB configuration list for communication between the remote UE and the network-side device through the relay UE; and

the SL RLC bearer configuration list comprises a first RLC bearer configuration list for UE-to-UE direct PC5 communication and a second RLC bearer configuration list for communication between the remote UE and the network-side device through the relay UE.

10 . The configuration method for remote UE according to claim 9 , wherein after receiving the QoS parameters of the to-be-initiated service reported by the remote UE, the method further comprises:

determining, based on the QoS parameters, configuration parameters for the PC5 interface for transmission of relay service.

11 . An electronic device, comprising a processor, a memory, and a program or instruction stored in the memory and capable of running on the processor, wherein when the program or instruction is executed by the processor, the processor is configured to execute the steps of the method according to claim 9 .