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Method for allocating idle channels of a cellular mobile telephone system for use in a microcellular system

  • US 5,710,973 A
  • Filed: 12/01/1995
  • Issued: 01/20/1998
  • Est. Priority Date: 10/21/1991
  • Status: Expired due to Term
First Claim
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1. A method by which a microcellular system (MCS) sharing voice channels in a frequency band allocated to a cellular mobile telephone system (CMTS) selects channels therefrom for allocation to said MCS, said MCS operating in the same area as a local cell of said CMTS to which said CMTS has allocated particular ones of said CMTS voice channels, wherein said MCS performs the steps of:

  • (a) repetitively scanning said CMTS voice channels for a scanning time period substantially longer than the duration of any single voice communication with a receiver in said MCS, said scanning including CMTS voice channels not allocated to said local cell, to determine a maximum reception level for each of said CMTS voice channels during said scanning time period;

    (b) generating and storing a list of idle voice channels based solely upon information obtained as a result of said scanning, wherein said maximum reception level of each CMTS voice channel on said list is below a predetermined threshold value;

    (c) allocating at least one channel from said list to said MCS for use as a MCS control channel; and

    (d) allocating channels from said list to said MCS for use as voice channels by said MCS.

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