Patent ID: 9531821
Filing Date: 2016-12-27
CPC Classification: H04L,H04W

Claim Text:
1. A server that generates information indicating a distribution of positions of terminal devices, the server comprising: an acquisition unit configured to acquire from each of a plurality of first terminal devices, terminal information including measurement information used to calculate a distance from each of second terminal devices to each of the plurality of first terminal devices for each second terminal device present near the first terminal device and position information of the first terminal device; a specifying unit configured to specify a region in which the second terminal device is disposed at a distance according to the measurement information from the position of each of the first terminal devices; and a generation unit configured to generate the information indicating the distribution of the positions of the first and second terminal devices based on the region specified by the specifying unit, wherein the measurement information is a reception strength when the first terminal device receives a radio wave transmitted from the second terminal device, wherein the specifying unit specifies the region in which the second terminal device is disposed at a distance according to the reception strength, and wherein, when positions of two first terminal devices are less than a predetermined distance from each other and the reception strengths from the same second terminal device acquired from the two first terminal devices are different, the specifying unit uses a reception strength from the first terminal device reporting a higher value of the reception strengths as the reception strength from the same second terminal device, the predetermined distance being a distance at which terminal information transmitted from the two first terminal devices can be considered as terminal information transmitted from one of the two first terminal devices.