METHOD AND DEVICE FOR CONFIRMING TIMING ADVANCE GROUP OF SERVICE CELL

摘要

The present invention provides a method for determining a timing advance group of a serving cell, including: determining, by a source base station of a user equipment, a target base station that the user equipment is to be handed over to; sending auxiliary information for determining a timing advance group of a target serving cell of the user equipment to the target base station; receiving the timing advance group of the target serving cell of the user equipment that is determined by the target base station according to the auxiliary information; and sending the timing advance group to the user equipment. The present invention further provides a corresponding base station and user equipment. Implementation of the method and device provided by the present invention can avoid timing advance grouping performed on a secondary carrier after handover, and reduce data transmission interruption or delay incurred by the handover, thereby improving quality of service of a communications service.