| 摘要 |
A portable phone (236) may operate inexpensively as a cordless phone when in a micro-cell generated by a micro-base station (202), or flexibly as a cellula r phone when it leaves the micro-cell and is served in a macro-cell generated by macro-base station (204) operating on the same frequency. When a mobile phon e (222), served by the macro-base station (2042), drives by, the signals from the micro-base station (202) (intended for the portable phone 236) drown out the signals from the macro-base station (204). This invention solves the problem by having the micro-base station (202) receive, delay, and retransmi t (on a 50 % duty cycle -- half the time receiving and half retransmitting) al l signals transmitted by macro-base station (204), in addition to transmitting its own signal. The delay appears to the mobile station (222) as a resolvabl e multi-path delay, and it continues to be able to receive the signal intended for it.
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