COMMUNICATION SYSTEM AND METHOD

摘要

A communication system that includes mobile user equipment and a communication network is provided. The communication network includes a first base station communicating with the user equipment according to a first defined radio frame format with a first sequence of radio frames each having the same length and each being allocated a respective first System Frame Number (SFN) to sequentially number the radio frames of the first sequence. A second base station is provided to communicate with the user equipment according to a second defined radio frame format including a second sequence of radio frames each having the same length and each being allocated a respective second SFN such that the radio frames of the second sequence are sequentially numbered. A radio signal includes first information indicative of a difference between the first and second SFNs at a particular time and second information usable with the first information.

主权项

1. A communication method of a User Equipment (UE) in a communication system, the method comprising:
receiving a handover command from a source base station, the handover command comprising a System Frame Number (SFN) offset for indicating a difference between the SFN of the source base station and a target base station, and a Reference Frame Identification (RFI) for determining which radio frame of the source base station and the target base station the SFN offset applies; synchronizing with the target base station based on the SFN offset and the RFI; and initiating random access with the target base station.