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Mobile communication system

  • US 4,955,082 A
  • Filed: 01/11/1989
  • Issued: 09/04/1990
  • Est. Priority Date: 01/14/1988
  • Status: Expired due to Fees
First Claim
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1. A mobile communication system of the TDMA type for use with a mobile station and a mobile station receiver, comprising:

  • a plurality of fixed signal transmitting and receiving signposts, each said signpost comprising at least one communicating zone, said zone of each said signpost overlapping a communicating zone of an adjacent signpost;

    a signal transmitted from said signposts comprising a frame, said frame including at least one controlling channel, a plurality of voice channels, and at least one positioning channel, said controlling channel and said voice channels comprising a predetermined frequency that is assigned to each said signpost; and

    means for setting said positioning channel such that said predetermined frequencies assigned to said signposts are switched every said frame, whereby, said mobile station receiver monitors each said positioning channel, detects a position of said mobile station based on each said positioning channel, and performs a zone switching operation between adjacent signposts based on the detected position of the mobile station.

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