发明授权
EP1547279B1 MOBILE COMMUNICATIONS SYSTEM AND METHOD FOR PROVIDING MOBILE UNIT HANDOVER IN WIRELESS COMMUNICATION SYSTEMS THAT EMPLOY BEAMFORMING ANTENNAS 有权
移动通信系统和方法,用于提供无线通信系统的移动单元范围内的成就,波束赋形天线使用

MOBILE COMMUNICATIONS SYSTEM AND METHOD FOR PROVIDING MOBILE UNIT HANDOVER IN WIRELESS COMMUNICATION SYSTEMS THAT EMPLOY BEAMFORMING ANTENNAS
摘要:
A method for handover a mobile unit (UE) from a first base station (BS1) to a second base station (BS2) in a wireless communication systems employing smart antenna technology. Following trigger events of a handover, the mobile station generates a physical signal sounding pulse transmitted by an isotropic antenna. The sounding pulse may consist of a common sequence of symbols or a specific sequence of symbols that uniquely identifies the mobile station. A series of sounding pulses can be sent according to a power ramping procedure until a base station has focused a communications beam toward the mobile. Receiving base stations provide feedback information upon detection of the sounding pulse allowing the mobile unit (UE) and/or base station (BS1-BS4) to form communication beams toward each other. A mapping protocol may also be utilized by the communication system.
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