Patent ID: 7840231

Claim:
A method for adjusting a forward transmission power control threshold in a mobile communication system including a base station and one or more terminals in a sector, comprising the steps of: a. pre-setting at the base station an entering overload control threshold for a total forward transmission power in the sector, a lower bound (Ptx_lower) and an upper bound (Ptx_upper) of a forward transmission power control threshold, and adjustment ranges of said lower bound and said upper bound; said adjustment ranges of said lower bound and said upper bound defining a width within which the lower bound and the upper bound of said forward transmission power control threshold are permitted to fluctuate; b. obtaining a current total forward transmission power of the sector; c. judging whether the current total forward transmission power exceeds said entering overload control threshold, if yes, turning to step d; otherwise, turning to step f with no adjustment; d. judging whether the current total forward transmission power exceeds the adjustment ranges of said lower bound and said upper bound, if not, reducing the forward transmission power control threshold corresponding to all terminals in the sector; if yes, turning to step f directly; and f. completing the adjustment of the forward transmission power control threshold; wherein in step a, the pre-setting the adjustment ranges of the lower bound and the upper bound of the forward transmission power control threshold in the sector comprises a step of pre-setting an adjustment step length parameter (Δ) and a step of pre-setting a permitted adjustment times (m); product of said adjustment step length parameter (A) and said permitted adjustment times (m) makes the adjustment range of said lower bound as (Ptx_lower_mΔ, Ptx_lower), and the adjustment range of said upper bound as (Ptx_upper-mΔ, Ptx_upper).