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Network acquisition mechanism for mobile RF data

  • US 5,548,818 A
  • Filed: 08/25/1992
  • Issued: 08/20/1996
  • Est. Priority Date: 08/25/1992
  • Status: Expired due to Fees
First Claim
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1. A system for RF communication network acquisition for RF communication between one or more mobile units and a plurality of base stations of a network having a plurality of RF broadcast regions distributed over a geographic area comprising:

  • means for issuing an RF beacon of selected frequency,beacon messages and data content from the base stations;

    means at base stations for adjusting periodic rate of issuance of the RF beacon according to data traffic at the base stations;

    means on the mobile units for scanning a list of frequencies;

    means on the mobile units for discerning if an RF beacon at a frequency from the list has been received; and

    means on the mobile units for discerning if a beacon is of sufficient quality to carry on RF communication with the network;

    wherein the means for discerning if the beacon is of sufficient quality includes timing means for determining if a threshold level of a number of beacon messages is received over a given time period;

    means for continuing scanning the list of frequencies if the timer means determines the threshold level of number of beacon messages was not received within the given time period.

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