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Call set-up and spectrum sharing in radio communication on systems with dynamic channel allocation

  • US 5,276,908 A
  • Filed: 10/25/1990
  • Issued: 01/04/1994
  • Est. Priority Date: 10/25/1990
  • Status: Expired due to Term
First Claim
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1. In a radio communication system operating within a specific radio spectrum and having a number of base stations, each communicating with a plurality of subscriber terminals over separate radio channels, a method of determining the availability of radio channels for use between said base station and said subscriber terminals, said base stations being located in geographical regions wherein varying portions of the radio spectrum in each of said geographical regions are reserved for fixed radio transmission services, the method comprising the steps of:

  • identifying the range of frequencies which is reserved for said fixed radio transmission services in a said base station'"'"'s geographical region;

    selecting, from a plurality of radio channels covering the radio spectrum, those radio channels that lie outside of the reserved range of frequencies for said base station'"'"'s geographical region; and

    registering, at the said base station associated with the geographical region, signalling and radio traffic channels that can be allocated from those channels that lie outside the reserved range of frequencies.

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