Cell group regulation method and system for multi-carrier system

The invention discloses a cell group regulation method and a cell group regulation system for a multi-carrier system. The method comprises the following steps that: a terminal reports auxiliary group regulation information to a base station; and the base station regulates current groups of serving cells of the terminal according to the auxiliary group regulation information. According to the method and the system, the problem that timing advance (TA) values of the serving cells in the multi-carrier system with different TA values cannot meet regular regulation requirements is solved; and the serving cells can be dynamically grouped, namely when a TA value in a group cannot meet the requirement of a certain cell in the group, the cell can be dynamically regulated into a proper group, so that the TA value using accuracy of user equipment (UE) is improved, and the TA values can be maintained by the UE with the lowest cost.