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Wireless modem

DC CAFC
  • US 5,592,491 A
  • Filed: 12/02/1994
  • Issued: 01/07/1997
  • Est. Priority Date: 10/26/1992
  • Status: Expired due to Term
First Claim
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1. A two-way communication network comprising:

  • a network hub switching center;

    subscriber units dispersed at various locations within a predetermined geographic area, said subscriber units including switching means for selecting a communication path within said network,local base station repeater cell communicating with identified individual subscriber units within a local base station geographic area associated with said local base station repeater cell, said local base station repeater cell further comprising,base station data processing and communication unit for transmitting to a set of said subscriber units contained within said local base station geographic area associated with said local base station repeater cell and receiving from a subset of said set of local subscriber units multiplexed synchronously related digital data messages of variable lengths for point-to-point communication between said local base station repeater cell and said subset of said local subscriber units,reception for receiving and processing data messages from said set of local subscriber units comprising a local remote receiver disposed within one of a plurality of cell subdivision sites partitioned from said local base station geographic area associated with said local base station repeater cell, said plurality of cell subdivision sites dispersed over said local base station geographic area, said local remote receiver being adapted to receive low power digital messages transmitted from said local subscriber units within range of said local remote receiver,said set of local subscriber units including low power mobile units located within said local base station geographic area, each of said local subscriber units adapted to communicate with said local base station repeater cell by way of digital data signals of variable lengths synchronously related to a base station broadcast signal and timed for multiplexed message transmission, anda modem communicatively coupled to said local subscriber units and said local base station repeater cell for transferring said multiplexed synchronously related digital data messages of variable lengths between said set of local subscriber units and said local base station repeater cell if said local subscriber units are unable to directly communicate with said local base station repeater cell.

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