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:
Jun. 12, 2001
Filed:
Dec. 21, 1998
System and methods for controlling access to digital wireless network in a dual mode wireless system
Eugene A. Oliva, Lake Hiawatha, NJ (US);
Bell Atlantic Mobile, Bedminister, NJ (US);
Abstract
A dual-mode wireless communication system, having a AMPS-based wireless system and a CDMA-based wireless communication system is configured for transmitting digital wireless telephone signals by selectively transmitting a sync channel into a selected propagation region at a power level that is undetectable by digital telephones located within the selected propagation region. The transmission of the sync channel signal at the undetectable power level causes the dual-mode digital telephone to search for the alternative AMPS-based analog system, limiting access by the dual-mode digital telephones. Hence, the dual-mode wireless communication system can limit access to the digital communication system, for example, to prevent the occurrence of hard handoff with an adjacent analog system, or to reduce usage in a congested sector.