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Dynamic channel selection in a cellular communication system

  • US 6,138,024 A
  • Filed: 10/23/1997
  • Issued: 10/24/2000
  • Est. Priority Date: 10/23/1997
  • Status: Expired due to Term
First Claim
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1. In a first cellular communication system having a set of allocated communication channels for transmitting and receiving communication signals in a geographic area and in which a second cellular communication system has a set of assigned channels for transmitting and receiving in the same geographic area, some of said assigned channels being the same as said allocated communication channels, a method of selecting an available allocated communication channel for use in transmitting and receiving communication signals in said first cellular communication system, comprising the steps of:

  • in said first cellular communication system periodically sensing and measuring received signal strength indication data on each then available allocated communication channel;

    storing said sensed and measured data for each allocated communication channel;

    periodically determining from said stored sensed and measured data the estimated expected probability of non-interference for each allocated communication channel relative to others of said allocated communication channels;

    selecting for use by said first cellular communication system an available allocated communication channel from said set of allocated communication channels based on the estimated expected probability of non-interference;

    determining the occurrence of channel assignment changes in said second cellular communication system;

    in response to said determination, suspending said selecting step, deleting said stored received signal strength indication data for all allocated communication channels, and, thereafter, reactivating said sensing, storing, determining and selecting steps.

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