| 摘要 |
PURPOSE:To predict beforehand the degradation of the line quality of the line of a specific number, to re-examine a wave transmitting and receiving level, etc., by a statistical technique by measuring the SN ratio of a radio wave from a moving station received at a base station, making it numerical and outputting this numerical value by an exchange by corresponding to a line number or a moving station number. CONSTITUTION:Transceivers 7 and 8 of the base station send data 17 and 19 to measure the SN ratio of the radio wave from the moving station to an SN ratio measuring device 11. A central processing unit 13 of the exchange controls the action of a channel switch 12, sends a data sending request command 19 to the SN ratio measuring device 11 and receives the analysis data of the SN ratio of the wave from the moving station returned. The central processing unit 13 makes the received analysis data 20 corresponding to the line number or the moving station number, edits them and sends them to a printer device 14 as printing data 21. Thus, the degradation of the line quality of the line of the specific number can be predicated beforehand, the radio wave transmitting and receiving level can be re-examined, etc., in the statistical technique. |
