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:
Jul. 22, 2014
Filed:
Nov. 07, 2005
Ramin Rezaiifar, San Diego, CA (US);
Roy F. Quick, Jr., San Diego, CA (US);
Paul Williamson, San Diego, CA (US);
Jun Wang, San Diego, CA (US);
Edward G. Tiedemann, Jr., San Diego, CA (US);
Ramin Rezaiifar, San Diego, CA (US);
Roy F. Quick, Jr., San Diego, CA (US);
Paul Williamson, San Diego, CA (US);
Jun Wang, San Diego, CA (US);
Edward G. Tiedemann, Jr., San Diego, CA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
Method and apparatus for encrypting transmission traffic at separate protocol layers L1, L2, and L3 so that separate encryption elements can be assigned to separate types of transmission traffic, which allows the implementation of different levels of encryption according to service requirements. Encryption elements use variable value inputs, called crypto-syncs, along with semi-permanent encryption keys to protect from replay attacks from rogue mobile stations. Since crypto-sync values vary, a method for synchronizing crypto-syncs at the mobile station and base station is also presented.