Patent ID: 9357453
Filing Date: 2016-05-31
CPC Classification: H04L,H04W

Claim Text:
1. A home base station for supporting a plurality of cells under carrier aggregation, comprising: a preamble generator for allocating respective random access resources in the cells for handover to be carried out by a user equipment (UE), and upon receiving a handover request signal transmitted by a Mobility Management Entity (MME), generating a specific preamble and its transmission time, so that the UE performs random access on the cells based on the preamble and the transmission time to obtain the random access resources and sends out a Random Access Preamble (RAP); and a preamble monitor for enabling the cells to simultaneously monitor the RAP sent by the UE, and when one of the cells receives the RAP, identifying the cell on which the UE camps based on which one of the cells that has the RAP, wherein the cell that receives the RAP disables monitoring actions of the other cells to stop the other cells from monitoring the RAP.