| 主权项 |
1. A computer-readable storage medium that is not a propagating signal, the computer-readable storage medium storing executable instructions that cause a processor to effectuate operations comprising:
detecting a plurality of communication devices in communication with one or more cellular towers of a network, the network including a home location register, wherein the plurality of the communication devices is located in a geographic region; determining a sample size that is less than a total number of the plurality of the communication devices; using a search based on a demographic criterion and the sample size to identify a sample set of the plurality of the communication devices, the sample set having the sample size; at selected time intervals, receiving information from the home location register, the information indicative of, for each of the communication devices of the sample set, a location of the respective communication device; correlating the location with a particular time of a plurality of times; determining a speed and a direction of each of the sample set of the plurality of the communication devices based on the information and the correlated plurality of times; deriving, from the speed and the direction of each of the sample set of the plurality of the communication devices, a traffic flow in the geographic region; determining, based on the derived traffic flow, a deviation from a predetermined traffic flow in the geographic region; and providing an alert message comprising an indication of the deviation. |
