Patent ID: 7231186

Claim:
A mobile station comprising: a degradation detecting section for detecting a degraded communication quality of the mobile station; an electric field measurement section for measuring an intensity of an electric field of the mobile station; a display section for representing an electric field level selected from among a plurality of electric field levels; a control section for, in response to detection of no degraded communication quality by said degradation detecting section, allowing said display section to represent said electric field level corresponding to said measured intensity of said electric field, and in response to detection of degraded communication quality by said degradation detecting section, allowing said display section to represent said electric field level corresponding to a fixed electric field level regardless of said detected intensity of said electric field; and a movement detector for detecting a movement of said mobile station, wherein said degradation detecting section and said electric field level measurement section are adapted for periodically detecting a degradation of a communication quality and measuring said intensity of said electric field, respectively, at respective time intervals, said degradation detecting section being adapted for detecting degraded communication quality at a longer time interval upon detection of a stationary state of said mobile station by said movement detector.