Patent ID: 11968633
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A relay communication method applied to a unidirectional relay scenario, where in the unidirectional relay scenario, an uplink includes a physical channel from a remote terminal device to a relay device and a physical channel from the relay device to a radio access network device, a downlink includes a physical channel from the radio access network device to the remote terminal device, and the method comprising:
receiving, by a first radio access network device, first information sent by a first terminal device, wherein the first information indicates that the first terminal device has limited uplink power;
determining, by the first radio access network device, based on the first information, a second terminal device that provides, in a target cell, a relay service for the first terminal device; and
sending, by the first radio access network device, second information to a second radio access network device, wherein
the second information indicates the second terminal device that provides, in the target cell, the relay service for the first terminal device,
the second radio access network device belongs to the target cell, and
the first terminal device requires connection to the target cell, wherein

the method further comprises:
receiving, by the first radio access network device, third information and fourth information sent by the second radio access network device, wherein
the third information includes a target cell identifier and a first cell radio network temporary identifier (C-RNTI) allocated to the first terminal device, and
the fourth information includes the target cell identifier, a second C-RNTI allocated to the second terminal device, and a random access resource;

sending, by the first radio access network device, the third information to the first terminal device; and
sending, by the first radio access network device, the fourth information to the second terminal device.