Patent ID: 6263204
Filing Date: 2001-07-17
Classification: H04W

Abstract:
A switching center connected to a plurality of base stations, a plurality of said base stations communicated with a plurality of wireless stations, said switching center comprising:a initiating unit which initiates a handover process operation in order that while any of said wireless stations is connected to a first base station, said any wireless station should be newly connected to a second base station irrelevant to said first base station;a receiver unit which receives a first packet, which is converted information from said wireless station into by said first base station, transmitted by said first base station and a second packet, which is converted information from said wireless station into by said second base station, transmitted by said second base station;a buffer unit which temporarily stores said first packet and said second packet, which are received at asynchronous timing, so as to be synchronized with each other;a calculating unit which calculates error rates of said first and second packets synchronized with each other;a selecting unit which selects such an packet whose error rate is lower than that of the other packet; anda cutting out unit which cuts out the connection between said wireless station and said first base station when such a condition that the error rate of said second packet exceeds the error rate of said first packet becomes a normal condition.