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Method of increasing the number of call options in a mobile telephone system

  • US 4,669,107 A
  • Filed: 04/16/1986
  • Issued: 05/26/1987
  • Est. Priority Date: 10/31/1984
  • Status: Expired due to Term
First Claim
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1. A method of increasing the number of call options in a mobile telephone system having a given number of radio channels and a base station (B5) within a heavily loaded first area (A5) comprising a part of the total coverage area of the telephone system, a given number of radio channels and a base station (B2) within at least one second area (A2) with low traffic intensity contiguous to, and partially overlapping the first area, and a mobile telephone exchange (MTX) connected to the base stations and to a public telephone network via direct lines, said method comprising:

  • monitoring in the mobile telephone exchange (MTX) the signal strength of subscriber signals on the radio channels from the base stations (B5 and B2) within the areas (A5 and (A2); and

    switching a call from a channel in the first area (A5) to an unoccupied channel in the second area (A2) under the control of the mobile telephone exchange (MTX) when the signal strength of a given subscriber signal in said unoccupied channel exceeds a given value (So) and irrespective of the subscriber signal strength at the base station (B5) in the first area (A5).

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