Method for an intersystem connection handover

DC
  • US 7,215,962 B2
  • Filed: 03/06/2001
  • Issued: 05/08/2007
  • Est. Priority Date: 03/06/2000
  • Status: Expired due to Term
First Claim
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1. A method for controlling an intersystem handover from a first radio access technology using a first transmission method to a second radio access technology using a second transmission method, comprising:

  • comparing a threshold value to a first transmission quality of a first signal to a first base transceiver station of the first radio access technology with respect to at least one first transmission characteristic, determined by a subscriber station; and

    only after the first transmission quality drops below the threshold value, determining, by the subscriber station throughout a predetermined time interval, a second transmission quality of a second signal to a second base transceiver station of the second radio access technology with respect to at least one second transmission characteristic.

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