Saeid S Sharifian

US Patent:

6813498, Nov 2, 2004

Filed:

Oct 27, 2000

Appl. No.:

09/698577

Inventors:

Visweswararao Durga - Wheaton IL
Saeid Sharifian - Aurora IL

Assignee:

Lucent Technologies Inc. - Murray Hill NJ

International Classification:

H04Q 720

US Classification:

4554561, 4554562, 4554563, 4554564, 4554565, 4554566, 455457, 3405681, 3405721, 340 721, 340 722, 34235707, 34235709

Abstract:

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.