Visweswararao Durga - Wheaton IL
Saeid Sharifian - Aurora IL
Lucent Technologies Inc. - Murray Hill NJ
4554561, 4554562, 4554563, 4554564, 4554565, 4554566, 455457, 3405681, 3405721, 340 721, 340 722, 34235707, 34235709
Apparatus, method and system embodiments are illustrated which provide for detection and recovery of missing wireless devices in communication systems. The preferred system embodiment includes a mobile switching center, an adjunct network entity, a base station, and a mobile unit, such as a cellular telephone or a wireless personal digital assistant. The adjunct network entity, such as an intelligent network server, has a detection and recovery application for determining, when a mobile unit is missing, a recovery identification and a recovery channel for the missing mobile unit. The mobile switching center then transmits a recovery page to the mobile unit via the base station, in which the recovery page includes information specifying the recovery identification and the recovery channel. The mobile unit, upon reception of a recovery page, enters a recovery mode and transmits a recovery signal on the recovery channel, with the recovery signal including the recovery identification. In the preferred embodiment, the recovery signal also includes global positioning system information.