The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 06, 1989
Filed:
Aug. 16, 1987
Joseph F Focarile, Gladstone, NJ (US);
David B Kunkee, Holmdel, NJ (US);
Robert T Saizan, Howell, NJ (US);
Shyamal Sengupta, Howell, NJ (US);
American Telephone and Telegraph Company, Murray Hill, NJ (US);
AT&T Information Systems, Incorporated, Murray Hill, NJ (US);
Abstract
A pager arranged for operation in a cellular radio system provides economy to subscribers and technological flexibility to a system operator. Paging service is available in any geographical area covered by the advanced mobile phone service system. Subscribers are thereby able to travel at will while continuing to receive page signals in the cellular system. A special set of geographically dispersed channels in the advanced mobile phone service system are dedicated nation-wide to signaling and call control functions. These channels are used by the pager to properly configure itself to receive a page signal. The pager scans these channels, tunes to the channel with the best received signal strength and synchronizes with a received data stream on this or a second best channel. The pager then awaits receipt of the page signal. The pager also automatically rescans the special channels periodically to insure that it is always tuned to the channel with the best received signal strength. Paging service to subscribers in a cellular radio system is provided by the pager when the full service of a cellular telephone is not desired. Alternatively, the pager is assigned the same number as an associated cellular telephone for providing a backup for telephone calls intended for the associated cellular telephone which is not 'ON' because the subscriber is temporarily unavailable to answer the incoming call.