A method and apparatus for detecting mobile phone in an Idle State are disclosed. A signal-generating unit generates a pseudo base station signal for transmission to a mobile phone in a detection area. A detecting unit detects a response signal that the mobile phone transmits in response to the pseudo...http://www.google.ca/patents/US6490455?utm_source=gb-gplus-sharePatent US6490455 - Apparatus and method for detecting a mobile phone in idle state
Apparatus and method for detecting a mobile phone in idle state