发明名称 Mobile communication system and mobile communication terminal
摘要 A mobile communication system has a circuit network (28), a plurality of reception base stations (26) connected to said circuit network (28), and a transmission base station (32) connected to said circuit network, for sending a radio wave to respective areas covered by said mobile communication terminals (26). When communications are performed between two mobile communication terminals (30), information is sent upstream from one of the mobile communication terminals (30) in an area (A) via the closest reception base station (26) to the circuit network (28), and then sent downstream from the circuit network (28) via the transmission base station (32) on a radio wave to the other mobile communication terminal (30) in an area (C). Since the radio wave sent from the transmission base station (32) reaches all areas (A, B, C, D) covered by the respective reception base stations (26), each of the mobile communication terminals (30) is not required to send a radio wave for indicating its own location. As no upstream traffic is needed for sending such a radio wave, the traffic of the circuit network (28) is greatly reduced. <IMAGE>
申请公布号 EP1021054(A2) 申请公布日期 2000.07.19
申请号 EP20000300002 申请日期 2000.01.05
申请人 SONY COMPUTER ENTERTAINMENT INC. 发明人 KAWAI, EIJI;ITO, TAKESHI
分类号 H04W60/00;(IPC1-7):H04Q7/24 主分类号 H04W60/00
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