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:
Sep. 07, 1999
Filed:
Mar. 29, 1996
Kumar Balachandran, Cary, NC (US);
Yi-Pin Eric Wang, Raleigh, NC (US);
Larry William Massingill, Selma, NC (US);
Ericsson Inc., Research Triangle Park, NC (US);
Abstract
A method and associated apparatus for deriving a random reference value from a paging signal transmitted between a network station and a user terminal of a radiotelephonic communication system, such as a satellite-cellular communication system. When communication is to be initiated, a paging signal is transmitted by a network station to a user terminal. When the user terminal detects the paging signal, a random reference value is derived from a portion of the paging signal, and response signal, responsive to the random reference value is generated and transmitted to the network station. When the network station receives the response signal, it compares it to an expected response value to authenticate the user terminal.