Elisa Oyj

Elisa Matkapuhelinpalvelut Oy

Juha Nykopp

Olli Knuuttila

Veli-Matti Kiviranta

A location of a subscriber can be observed by means of a mobile network in a completely anonymous way, without a subscriber identifier or a temporary subscriber identifier. At first, a method extracts from a first time slot of a radio channel a message which includes information about a second time slot of a radio channel. The first time slot of a radio channel discloses the current cell of the subscriber and the second time slot of a radio channel discloses a new cell of the subscriber. A location of the subscriber is determined on the basis of the current and the new cell. This location is approximately situated in a geographical intersection area of the current and the new cell. Different kinds of statistics can be deduced from the observations concerning activities of subscribers.

Handover-based method for anonymous observation of a moving subscriber

Observing a moving subscriber on the basis of handover commands

The invention relates to collecting of traffic data with the aid of a mobile station network. Such areas are determined in the mobile station network, wherein the terminal equipment communicates with the network with the aid of one or more predetermined messages. Based on the message between the network and terminal equipment and relating to a first area a first time by the clock is stored, and based on the message between the network and the same terminal equipment and relating to a second area a second time by the clock is stored. The times by the clock are used in order to obtain traffic data by calculating, for example, the time spent on moving from one area to another. By determining the distance between areas along the road it is possible also to determine the speed of the vehicle. Information may also be collected to form a statistic distribution.

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Tampere, Finland

Juha Nykopp