DEVICE AND METHOD FOR MEASURING COMMUNICATION QUALITY OF MOBILE COMMUNICATION SYSTEM

PROBLEM TO BE SOLVED: To accurately measure a load and quality. SOLUTION: This communication quality measuring device for CDMA mobile communication system comprises a power measuring part 220 which measures the received power of a specified sector of a base station 100 and adjusts signal band and level, an A/D converter 231 which samples the measured received power and converts the received power into a digital signal, a controlling part 232 which finds the ratio of the received power to background noise power according to the converted digital signal, calculates a probability density function or a cumulative distribution function with respect to the ratio, extracts the number of traffic loads to decide communication quality by comparing the probability density function or the cumulative distribution function with a probability density function or a cumulative distribution function with respect to the ratio of received power-to-background noise power calculated theoretically by a set variable, and a keypad 233 for setting a variable.