| 摘要 |
A method and apparatus for transitioning between control channels in a cellular telecommunications system by using adaptive hysterisis. In an embodiment of the invention, when a mobile station attempts to transition from an analog control channel (ACCH) to a digital control channel (DCCH) and subsequently returns to the ACCH, a threshold level of DCCH received signal strength (rssi) at the mobile station that triggers a transition attempt from an ACCH to a DCCH is incrementally increased. Incrementally increasing the threshold level DCCH rssi prevents unnecessary transitions back and forth between an ACCH and a DCCH when the rssi of the DCCH is close to a minimum level that triggers a camp on the DCCH after a synchronization, or when the mobile station cannot synchronize to or camp on the DCCH successfully.
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