Patent ID: 6259920
Filing Date: 2001-07-10
Classification: H04W

Abstract:
A mobile communication system including a plurality of base stations communicated with a plurality of wireless stations, and a switching center connected to a plurality of said base stations, 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 unit such that said wireless station is newly connected to said second base station while keeping the connection with said first base station by said wireless station;a unit such that said first and second base stations convert the transmission information from said wireless station into a packet and then transmits said packet to said switching center;a unit such that said switching center receives a first packet transmitted by said first base station and a second packet transmitted by said second base station;a unit such that said first packet and said second packet, which are received at asynchronous timing, corresponds to a step for temporarily storing said first and second packets received in the asynchronous timing into a buffer 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 unit such that when such a condition that the error rate of said second packet exceeds the error rate of said first packet becomes a normal condition, the connection between said wireless station and said first base station is cut out.