Patent ID: 7328019
Filing Date: 2008-02-05
Classification: H04W

Abstract:
1. A communication environment measurement method in a mobile station included in a communication system which respectively transmits pilot signals from a plurality of base stations to a mobile station and controls a hard handover by switching a channel for data transmission to said mobile station based on the communication environment between each base station and the mobile station, including steps of: measuring the communication environment between a source base station of said channel and said mobile station, and the communication environment between another base station and said mobile station for said handover control, and compensating relative deterioration of the measurement result of the communication environment on the source base station of said channel in comparison with the measurement result of the communication environment on said other base station, the relative deterioration being caused by the transmission of said channel, wherein said step of compensating includes: measuring total receive power of the signals received from the source base station of said channel; measuring power of the signal of said channel received from the source base station of said channel; measuring signal power of the pilot signal received from the source base station of said channel; correcting the total receive power by subtracting the power of the signal via said channel from said total receive power; calculating total noise power based on the total receive power after said correction, and measuring the communication environment between the source base station of said channel and said mobile station using said pilot power and said total noise power.