Method for measuring road traffic load based on analyzing cellular communications
First Claim
1. A method for correlating a vehicle with the road on which it travels based on cellular communication, the method comprising the steps of:
- gathering a sequence of cellular network events related to one or more mobile units, and a physical, geographically-defined, accurate location of each mobile unit determined by a physical geographically-defined, accurate location determination system when each cellular network event occurs, such cellular network events and physical, geographically-defined accurate locations being gathered during one or more drives and then stored as entries in a learnt database as a location reference; and
conducting analysis of a new sequence of cellular network events related to a particular mobile unit, the new sequence of cellular network activity events being gathered during a new drive and is independent of physical, geographically-defined location information, in conjunction with the learnt database to correlate the new sequence of cellular network events to a physical geographic location;
whereas the new sequence of cellular network events is extrinsically collected from the base stations or the controllers or main switching systems or communication links between them and whereas the new sequence of cellular network events is processed to overcome the problem of similar sequences for neighboring routes and whereas the step of conducting analysis is performed for areas in which at least two roads are covered, at least partially, by the same two or more cells.
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Abstract
Continuously extracting traffic load and speed on roads within the coverage area of a cellular network using only data that arrives to the cellular switch implanted in the following stages: (a) a learning phase, which can include vehicle(s) with a location device (i.e., a GPS system) traveling across the covered routes and collecting cellular data and location data in parallel, analyzing the accumulated data and processing the date to create a reference database; and (b) an operational stage in which communications on the cellular network are monitored continuously, and matched against the reference database in to locate their route and speed. The data analysis and data base structure are provided in a manner that enables in the operational stage fast and reliable initial identification of the vehicle'"'"'s route, based only on the cell ID of handovers; follow-up forward and backwards of the vehicle'"'"'s route; and real-time incident detection.
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Citations
26 Claims
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1. A method for correlating a vehicle with the road on which it travels based on cellular communication, the method comprising the steps of:
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gathering a sequence of cellular network events related to one or more mobile units, and a physical, geographically-defined, accurate location of each mobile unit determined by a physical geographically-defined, accurate location determination system when each cellular network event occurs, such cellular network events and physical, geographically-defined accurate locations being gathered during one or more drives and then stored as entries in a learnt database as a location reference; and conducting analysis of a new sequence of cellular network events related to a particular mobile unit, the new sequence of cellular network activity events being gathered during a new drive and is independent of physical, geographically-defined location information, in conjunction with the learnt database to correlate the new sequence of cellular network events to a physical geographic location; whereas the new sequence of cellular network events is extrinsically collected from the base stations or the controllers or main switching systems or communication links between them and whereas the new sequence of cellular network events is processed to overcome the problem of similar sequences for neighboring routes and whereas the step of conducting analysis is performed for areas in which at least two roads are covered, at least partially, by the same two or more cells. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A method for correlating a vehicle with the road on which it travels based on cellular communication, the method comprising the steps of:
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gathering a sequence of cellular network events related to one or more mobile units, and a physical, geographically-defined, accurate location of each mobile unit determined by a physical geographically-defined, accurate location determination system when each cellular network event occurs, such cellular network events and physical, geographically-defined accurate locations being gathered during one or more drives and then stored as entries in a learnt database as location reference; and conducting analysis of a new sequence of cellular network events related to a particular mobile unit, the new sequence of cellular network activity events being gathered during a new drive and is independent of the physical, geographically-defined location information, in conjunction with the learnt database to correlate the new sequence of cellular network events to a physical geographic location-; conducting analysis of a new sequence of cellular network events related to a particular mobile unit, the new sequence of cellular network activity events being gathered during a new drive and is independent of physical, geographically-defined location information, in conjunction with the learnt database to correlate the new sequence of cellular network events to a physical geographic location; whereas the new sequence of cellular network events is extrinsically collected from the base stations or the controllers or main switching systems or communication links between them and whereas the new sequence of cellular network events is processed to overcome the problem of similar sequences for neighboring routes; and wherein the step of conducting analysis further comprises;
matching chains from new drives to the learnt database by searching for a chain of J cells that has at least K (K<
=J) cells that appear in the same order, both in a chain from the new drive as well as in a chain from the learnt database, whereas J and K may vary for different route sections; andassigning the route of the chain from the learnt database to the new chain that was matched. - View Dependent Claims (25)
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26. A method for correlating a vehicle with the road it travels on based on cellular communication, the method comprising the steps of:
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collecting handover sequences statistics for a relevant area; collecting road traffic volume information for each route in the relevant area from external sources for roads that differ in traffic conditions; assigning handover sequences to routes according to volume comparison analysis; and conducting analysis of new handover sequences from new drives in the relevant area in conjunction with the previously collected handover and traffic volume information to identify a route at certain time points during cellular phone calls.
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Specification