Patent ID: 6421370
Filing Date: 2002-07-16
Classification: H04W

Abstract:
A spread spectrum communication system having a plurality of mobile stations and a plurality of mobile stations and that share the same frequency and operate independently,wherein each of the base stations may be identified as a local base station or a non-local base station relative to each respective mobile station, and wherein each base station includes: means for always transmitting a pilot signal (base station reference signal) at a constant power level, and wherein each of the mobile stations has: quality measuring means for measuring base station reference signals received from the local base station and an adjacent base station identified as one of the non-local base stations relative to the relevant mobile station; and transmission power controlling means for controlling the power level of a signal transmitted from the relevant mobile station corresponding to the measured results in such a manner that when the relevant mobile station is approaching the adjacent base station, said transmission power controlling means decreases the power level of the transmission signal.