Handoff and source congestion avoidance spread-spectrum system and method

  • US 7,187,706 B2
  • Filed: 10/02/2001
  • Issued: 03/06/2007
  • Est. Priority Date: 01/12/2001
  • Status: Active Grant
First Claim
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1. An improvement method to a frequency division duplex (FDD) distributed-network, spread-spectrum system comprising the steps of:

  • transmitting, using radio waves, from a first base station (BS), located in, and part of, the FDD distributed network, a first BS-packet signal at a first frequency;

    receiving at a remote station (RS) the first BS-packet signal, thereby obtaining a first RS-received signal;

    transmitting, using radio waves, from a second base station a second BS-packet signal at a second frequency, with the second frequency different from the first frequency;

    receiving at said remote station the second BS-packet signal at the second frequency, thereby obtaining a second RS-received signal;

    monitoring at said remote station a first signal metric of the first RS-received signal, and a second signal metric of the second RS-received signal; and

    determining at said remote station that the first signal metric of the first RS-received signal falls below a threshold, and that the second signal metric of the second RS-received signal is above the threshold, and that the second base station has available capacity, thereby determining to change base stations.

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