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Channel allocation in radio telephone systems

  • US 6,456,825 B1
  • Filed: 12/23/1999
  • Issued: 09/24/2002
  • Est. Priority Date: 04/28/1998
  • Status: Expired due to Term
First Claim
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1. A radio telephone system comprising a plurality of mobile telephones, a plurality of base stations and positioning means operative to determine the position of mobile radios, the system having channel allocation means into which is loaded information regarding first and second conditions for determining channel allocation, the first condition being based on avoiding interference in areas served by the base stations and the second condition being based on avoiding interference in areas served by the positioning means, the channel allocation means being operative to determine if a channel is in use in an interfering zone by using the first condition and, if the first condition is not met, determining if the channel is in use in an interfering sub-zone by using the second condition.

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