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Method and system for providing a handoff from a CDMA cellular telephone system

  • US 6,240,292 B1
  • Filed: 11/23/1999
  • Issued: 05/29/2001
  • Est. Priority Date: 12/29/1994
  • Status: Expired due to Term
First Claim
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1. A method of conducting a handoff of a mobile station from a first cellular communication system to a second cellular communication system, the first cellular communication system utilizing a code division multiple access (CDMA) communication in accord with a first technique, the second cellular communication system utilizing an alternative communication technique, the method comprising the steps of:

  • conducting a communication session for the mobile station through one of a plurality of base stations of the first cellular communication system in accord with the first communication technique;

    receiving in the mobile station, a CDMA pilot signal compatible with the first communication technique from a CDMA transmitter associated with one of a plurality of base stations of the second cellular communication system; and

    directing handoff of the mobile station from the base station of the first cellular communication system to a base station of the second cellular communication system utilizing the alternative communication technique, as a function of the CDMA pilot signal received by the mobile station.

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