发明名称 |
MOBILE COMMUNICATION SYSTEM |
摘要 |
A mobile communication system using a cellular system in which each of one or more cells is provided with a base radio station, and mobile terminals communicate with the base radio stations. Base radio stations (21, 22 and 23) are connected to a central base station (100) by optical fibers. The central base station is connected to a mobile switching center (50). Each base radio stations is provided with an O/E converter (201) and E/O converter (207). The O/E converter converts a optical signal containing speech signals and a call connection control signal into RF signals. The E/O converter (207) converts RF signals, received from a mobile terminal (11) via an antenna (204), into optical signals and transmitting the optical signals to the central base station. The central base station comprises O/E converters (301- 303) for converting optical signals from each base radio station into RF signals; receivers (401- 403) for demodulating these RF signals; transmitters (406-408) for converting speech signals and a call connection control signal from the mobile switching center into RF signals; and E/O converters (304 - 306) for converting these RF signals into optical signals and transmitting the optical signals to a base radio station.
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申请公布号 |
CA2051496(C) |
申请公布日期 |
1996.05.07 |
申请号 |
CA19912051496 |
申请日期 |
1991.09.16 |
申请人 |
NEC CORPORATION |
发明人 |
EMURA, KATSUMI;SHIBUTANI, MAKOTO;NAMIKI, JUNJI;KANAI, TOSHIHITO |
分类号 |
H04B10/12;H04W88/08;(IPC1-7):H04B7/26 |
主分类号 |
H04B10/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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