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Mobile assisted handover using CDMA

  • US 7,212,820 B2
  • Filed: 02/02/1995
  • Issued: 05/01/2007
  • Est. Priority Date: 04/17/1992
  • Status: Expired due to Fees
First Claim
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1. A method of mobile-assisted handover in a wireless network comprising:

  • communicating with a mobile station from a first base station;

    receiving, at a network controller, one or more data messages sent from said mobile station to said first base station that indicate relative signal strengths of at least a second base station operating on a same frequency as said first base station;

    determining, by said network controller, to handover said mobile station from said first base station to said second base station based on said signal strengths; and

    handing over said mobile station from said first base station to said second base station based on said determination by said network controller;

    wherein said mobile station communicates with said first base station using a first CDMA spreading code before and during handover, and wherein said mobile station communicates with said second base station using a second CDMA spreading code during and after handover; and

    sending a control message from said first base station to said mobile station that identifies said second CDMA spreading code to support handover of said mobile station.

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