×

Coexisting GSM and CDMA wireless telecommunications networks

  • US 5,978,679 A
  • Filed: 02/23/1996
  • Issued: 11/02/1999
  • Est. Priority Date: 02/23/1996
  • Status: Expired due to Term
First Claim
Patent Images

1. A method of switching a subscriber unit in a wireless telecommunications system from a code division multiple access radio frequency signal interface to Global System for Mobile communication time division multiple access radio frequency signal interface during a telephone call, comprising the steps of:

  • determining that the subscriber unit is in a predetermined condition while in code division multiple access mode, said predetermined condition occurring when a strength of a pilot channel from a pilot beacon exceeds a strength of a pilot channel in an active set by an amount 0.5 dB greater than a value T-- COMP;

    transmitting data to and from the subscriber unit in accordance with Global System for Mobile communications over-the-air interface;

    determining a strength for a set of pilot channels received by the subscriber unit; and

    generating a pilot strength measurement report indicating said signal strength for each pilot channel received.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×