[54] CELLULAR COMMUNICATIONS SYSTEM UTILIZING PAGING AREAS
[75] Inventors: Alain Boudreau, Le Gardeur; Andre Beauregard, Bois Briand, both of Canada
[73] Assignee: Telefonaktiebolaget L M Ericsson, Stockholm, Sweden
[21] Appl. No.: 882,607
[22] Filed: May 12,1992
[51] Int. CI.* H04M 11/00; H04Q 7/00;
G08B 5/22
[52] U.S. a 379/87; 379/59;
455/33.1; 340/825.44
[58] Field of Search 340/825.03, 825.44,
340/825.47; 379/56, 57, 58, 59, 60; 455/33.1,
33.2
[56] References Cited
U.S. PATENT DOCUMENTS
4,775,999 10/1988 Williams 379/59
4,814,763 3/1989 Nelson et al 340/825.44
4,843,622 6/1989 Yotsutani et al 379/59
5,111,197 5/1992 Ichikawa 340/825.44
5,153,902 10/1992 Buhl et al 379/57
5,175,758 12/1992 Levanto et al 379/57
5,247,698 9/1993 Sawyer etal 455/33.1
5,278,890 1/1994 Beeson, Jr. et al 379/57
5,282,240 1/1994 Buhl et al 379/59
A system for paging mobile stations within a cellular telecommunication system wherein paging areas, which are composed of a plurality of location areas, are created to provide a means for locating a mobile station when the mobile station has not responded to a location area page and without requiring a service area page. The system sends a page request to the location area where the desired mobile station last registered. If a response is not received, the system sends a page request to the paging area which includes a plurality of location areas where the mobile station is likely to be found. If a page response is still not received from the desired mobile station, then a page request will be sent to all of the location areas within the service area.
4 Claims, 3 Drawing Sheets
