| 摘要 |
PROBLEM TO BE SOLVED: To grasp an area having large variations (quality deterioration) in communication quality in a wireless system without oppressing the traffic.SOLUTION: The acquired information on wireless quality is stored in storage means, positional information on a device is acquired, the wireless quality feature amount is calculated from the information on wireless quality, and the deterioration of communication quality is determined from variations in communication quality in an area shown in the positional information, using a discrimination function for discriminating the wireless quality feature amount and the deterioration of area quality. When it is determined that variations in communication quality are large and the communication quality is deteriorated, information on quality deterioration is transmitted to servers as the measured report. |
