Method and system for collecting traffic data
First Claim
1. Method for collecting traffic data with the aid of a mobile station network and terminal equipment in vehicles to be observed, the method comprising:
- defining areas in the mobile station network, wherein the terminal equipment communicates with the network using one or more predetermined messages,determining a first time by a first clock with a subscriber identity stored based on a message between the network and the terminal equipment and relating to a first area,determining a second time by a second clock with a subscriber identity stored based on a message between the network and the same terminal equipment and relating to a second area, andusing the first time and the second time to obtain traffic data about the vehicle moving the terminal equipment byselecting clock pairs based on the subscriber identity/subscriber identities, calculating differences of the selected time by the clock pairs,the calculated differences are collected to form a statistic distribution, anda characteristic magnitude is calculated for the statistic distribution.
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Abstract
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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Citations
28 Claims
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1. Method for collecting traffic data with the aid of a mobile station network and terminal equipment in vehicles to be observed, the method comprising:
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defining areas in the mobile station network, wherein the terminal equipment communicates with the network using one or more predetermined messages, determining a first time by a first clock with a subscriber identity stored based on a message between the network and the terminal equipment and relating to a first area, determining a second time by a second clock with a subscriber identity stored based on a message between the network and the same terminal equipment and relating to a second area, and using the first time and the second time to obtain traffic data about the vehicle moving the terminal equipment by selecting clock pairs based on the subscriber identity/subscriber identities, calculating differences of the selected time by the clock pairs, the calculated differences are collected to form a statistic distribution, and a characteristic magnitude is calculated for the statistic distribution. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. System for collecting traffic data with the aid of a mobile station network when conventional terminal equipment is located in vehicles to be observed, characterized in that the system includes
means for determination of such areas, wherein the terminal equipment communicates with the network with the aid of one or more predetermined messages, first storing means for storing a time by a clock with the subscriber identity based on a message between the terminal equipment and the network and relating to a first area, second storing means for storing a time by a clock with the subscriber identity based on a message between the network and the same terminal equipment and relating to a second area, means for selecting the times which relate to the same subscriber identity, calculating means for calculating a time difference between the selected times means to obtain the distance between the first area and the second area, means using said time difference and said distance for producing traffic data about a certain vehicle moving said terminal equipment, means for collecting the calculated time differences to form a statistic distribution, and calculating means for calculating a characteristic magnitude for the statistic distribution.
Specification