Patent ID: 8886133

Claim:
A power adjustment method for use in a network station power adjustment apparatus, the network station power adjustment apparatus being used in a network system, the network system comprising a base station and a first mobile station, the network station power adjustment apparatus connecting with the base station, the base station connecting with the first mobile station, and the power adjustment method comprising the following steps: (a) enabling the network station power adjustment apparatus to decide a synchronization time transformation function according to a connection status between the base station and the first mobile station; (b) enabling the network station power adjustment apparatus to transform at least one signal-to-noise ratio between the base station and the first mobile station into at least one first synchronization time via the synchronization time transformation function based on a frequency error of the first mobile station while the base station transmits signals at a base station down-link synchronization channel transmitting power, wherein the at least one signal-to-noise ratio is greater than a signal-to-noise ratio threshold; (c) enabling the network station power adjustment apparatus to determine that the at least one first synchronization time is greater than a synchronization time threshold; and (d) enabling the network station power adjustment apparatus to transmit a first power adjustment message to the base station based on the result of step (c) so that the base station decreases the base station down-link synchronization channel transmitting power according to the first power adjustment message.