Patent ID: 8644818

Claim:
A method comprising: obtaining roaming history data of wireless user devices in a wireless cellular communication network with respect to base transceiver stations each configured to serve a corresponding coverage area at a fixed known location and with respect to radio access point devices each configured to serve a corresponding relatively smaller coverage area in the wireless cellular communication network and which radio access point devices are readily movable from one location to another location, the roaming history data comprising: location update information comprising local area code information associated with location areas of the wireless user devices relative to the base transceiver stations in the network; and measurement record information comprising indications of frequencies of signals received by the user devices; and analyzing the local area code information in the location update information and frequency information in the measurement record information of the roaming history data to determine a time between updates of the location update information and the measurement record information; and determining that a radio access point device is operating at a location other than its expected location when the determined time indicates that the updates of the location update information and the measurement record information would not be possible unless the radio access point is operating at the location other than its expected location.