Patent ID: 6496493
Filing Date: 2002-12-17
Classification: H04W

Abstract:
Handoff trial method by a mobile station comprising the steps of: a first step of measuring and storing a pilot power strength (pilot_A) of a base station on service; a second step of measuring and storing a pilot power strength (pilot_B) of a neighboring base station; a third step of comparing the sum of the pilot_A and pilot threshold_1 set to the mobile station to try handoff with the pilot_B; a forth step of, if the pilot_B is larger than the sum of the pilot_A and pilot threshold_1 as a result of the comparing, storing associated pilot offsets out of the pilot_B at a predetermined times and counting the stored times; a fifth step of identifying whether the counting times reaches at a predetermined times to detect a pilot signal suited for handoff condition; a sixth step of, if the counting times reaches at the predetermined times as a result of the identifying, identifying whether the stored pilot offsets are all the same; and a seventh step of, if the pilot offsets are all the same as a result of the identifying, sending a signal measurement message having the stored pilot offsets and associated pilot power strengths to the service base station and requesting handoff therefrom.