Ntt Docomo, Inc.

Kazuya Sasaki

Tomohiro Nakagawa

Takuya Doumen

Masatoshi Kimoto

Shoichi Horiguchi

Tadashi Okamine

Kazuma Nozawa

Kazuki Kinjou

An object of the present invention is to appropriately correct data based on position data acquired by positioning. A data correction deviceincludes an information storage unitthat stores position information including position data acquired by positioning and positioning information relating to the positioning, a filter generation unitthat generates a filter on the basis of the positioning information included in the position information stored by the information storage unit, and a data correction unitthat applies the filter generated by the filter generation uniton the basis of the positioning information included in the position information to data based on the position data included in the position information to thereby correct the data.

Data correction device

A traffic amount estimation system is a traffic amount estimation system that estimates a traffic amount of people in a predetermined time frame in an area that is an estimation target set in advance, the traffic amount estimation system including: a population information acquiring unit configured to acquire population information representing a population at a predetermined timing in the area that is the estimation target; a movement state information acquiring unit configured to acquire movement state information representing a movement state of each of a plurality of people in the area that is the estimation target; and an estimation unit configured to group the movement state information in accordance with moving directions represented by the movement state information and estimate the traffic amount on the basis of the grouped movement state information and the population information.

Traffic amount estimation system

To provide an information distribution management device configured to analyze distribution in consideration of the number of unique users. An advertisement management deviceincludes a heat map generation unitconfigured to generate a heat map indicating the necessity of advertisement distribution to a designated target layer for each of a plurality of units of digital signageand for each time slot, a reach curve generation unitconfigured to function as a viewing estimation unit that estimates the viewing frequency of unique users of the target layer for the digital signageto which the heat map is applied, and an evaluation unitconfigured to evaluate the heat map on the basis of the number of viewers who are unique users of the target layer (equivalent to viewing frequency) and the total number of viewers who are all users to whom the heat map is applied (viewing frequency).

Information distribution management device

An environment estimation deviceincludes: an information storage unitconfigured to store base station information in which a serving timing at which a mobile terminalis served in a radio communication range of a base stationand environment information indicating an environment of the base stationare correlated; an information acquiring unitconfigured to acquire position information including position data of the mobile terminalacquired by positioning and a positioning timing; and an estimation unitconfigured to estimate, based on the positioning timing included in the position information of the mobile terminalacquired by the information acquiring unitand the base station information stored in the information storage unit, an environment of the mobile terminalat a position indicated by the position data included in the position information.

Environment estimation device

A check-in determination apparatusconfigured to determine check-in indicating that a terminalhas entered a geofence which is a prescribed geographic area includes: a related geofence information storage unitconfigured to store related geofence information in which a related geofence which is another geofence is correlated with each geofence on the basis of a distance to the geofence; a check-in determination unitconfigured to determine check-in of the terminalsequentially with respect to each of the geofences. When it is determined that the terminalhas checked into one geofence, the check-in determination unitexcludes the related geofence correlated with the one geofence in the related geofence information stored by the related geofence information storage unitfrom determination targets in subsequent determination.

Check-in determining device

An object is to provide a population distribution aggregation calculation device which can calculate a population distribution of high accuracy. A population distribution aggregation calculation device includes a narrow-area mesh group management unitconfigured to generate wide-area mesh data by acquiring the number of user terminals positioned in each predefined wide-area mesh using approximate positional information of a user terminal, and to generate narrow-area mesh data by acquiring the number of user terminals positioned in each of a plurality of narrow-area meshes obtained by dividing a wide-area mesh by a predetermined geographic resolution for each predetermined positional information acquisition pattern using detailed positional information stored in the positioning data accumulation unit, a reliability evaluation unitconfigured to calculate reliability of narrow-area mesh data for each positional information acquisition pattern on the basis of wide-area mesh data and narrow-area mesh data, and a population distribution estimation unitconfigured to estimate the number of terminals in a narrow-area mesh on the basis of the narrow-area mesh data and the wide-area mesh data according to the reliability.

Method for aggregation and calculation of a population distribution of devices over a predetermined geographic area

A check-in determination apparatusincludes: a determination history information storage unitconfigured to store determination history information for each terminal, in which position identifying information capable of identifying a position of the terminalwhen check-in of the terminalwith respect to the geofence was determined is correlated with geofence identifying information capable of identifying the geofence; a related geofence information storage unitconfigured to store related geofence information that correlates another geofence with each geofence; a position identifying information acquisition unitconfigured to acquire position identifying information of the terminal; and a check-in determination unitconfigured to determine check-in of the terminalwith respect to the geofence determined on the basis of the acquired position identifying information of the terminal, the stored determination history information, and the stored related geofence information.

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Chiyoda-ku, Japan

Kazuya Sasaki