Patent ID: 11924901
Assignee: BEJING JINGSHI INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 17:
18. A non-transitory computer-readable storage medium, wherein the non-transitory computer-readable storage medium stores a computer program for execution by a processor of a terminal device, wherein a base station provides a carrier aggregation service for the terminal by using at least two serving cells, wherein the at least two serving cells comprise a first serving cell and a second serving cell, the program including instructions for:
detecting that downlink communication of the first serving cell fails, and, upon detecting that downlink communication of the first serving cell fails, determining that downlink communication of the second serving cell is normal;
sending a communication failure recovery request on an uplink channel of the second serving cell, the communication failure recovery request indicating a request to recover from a downlink communication failure of the first serving cell, wherein the communication failure recovery request comprises an index of the first serving cell and a candidate reference signal resource indication of the first serving cell; and
detecting a communication failure recovery response on a downlink channel of the second serving cell, the communication failure recovery response indicating a downlink communication resource of the first serving cell;
wherein the program further includes instructions for: selecting, from the serving cells in normal communication, a serving cell having the best channel quality of a downlink channel as the second serving cell, if there are a plurality of serving cells in normal communication.