Method for allocating idle channels of a cellular mobile telephone system for use in a microcellular system
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United States of America Patent
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Jan 20, 1998
Grant Date -
N/A
app pub date -
Dec 1, 1995
filing date -
Oct 21, 1991
priority date (Note) -
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status (Latency Note)
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Abstract
In a microcellular system operated in the same frequency band as a cellular system, an interference-free channel is automatically searched and allocated. The microcellular system which shares the frequency band with the cellular system comprises a control unit, a base station and a multi-channel selecting receiver. The multi-channel selecting receiver monitors a use status of cellular channels of the band by repetitively scanning voice channels for a scanning time period substantially longer than the duration of any single voice communication to detect idling channels and allocates them to its own system. Whenever a communication request is issued, the base station detect a channel not used by its own system from the idling channels and allocates it for communication.
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