| 摘要 |
Communication quality measured between a base station and a mobile station in a radiotelephone system is associated with positional information at a point where such measurement is made. A radio communication link is established between a mobile station, i.e., a data gathering apparatus 10, and a base station 11, and data is transferred therebetween at a predetermined transmission rate to determine the maximum transmission rate. If the transmission is done correctly, the positional information is determined at that point. The positional information is obtained by use of a GPS receiver 18, which receives signals sent from satellites 16 orbiting around the earth. The resulting positional information is associated with the transmission rate and stored in a memory 20, or displayed on a display unit 22.
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