Patent ID: 9408122
Filing Date: 2016-08-02
CPC Classification: H04W

Claim Text:
1. A method for handover in an LTE/LTE-A wireless communication system, the method comprising: receiving a handover command from a serving base station by a user equipment (UE), wherein the UE is served in a serving cell of the serving base station; performing downlink synchronization with a target base station, wherein the UE determines a first radio frame boundary of a target cell of the target base station; obtaining a system frame number (SFN) of the target cell by comparing the first radio frame boundary of the target cell and a second radio frame boundary of the serving cell and thereby deducing the SFN of the target cell from a time difference between the second radio frame boundary of the serving cell and the first radio frame boundary of the target cell before receiving additional SFN and timing information from the serving or the target base station; and performing a handover procedure with the target cell based on the deduced system frame number before reading SFN information in a broadcast channel broadcasted by the target base station.