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:
May. 20, 2014
Filed:
Dec. 01, 2010
Vitaly Drapkin, San Diego, CA (US);
Adrian Edward Escott, Reading, GB;
Rekha S. Iyer, San Diego, CA (US);
Thomas Klingenbrunn, San Diego, CA (US);
Kuo-chun Lee, San Diego, CA (US);
Shyamal Ramachandran, San Diego, CA (US);
Vitaly Drapkin, San Diego, CA (US);
Adrian Edward Escott, Reading, GB;
Rekha S. Iyer, San Diego, CA (US);
Thomas Klingenbrunn, San Diego, CA (US);
Kuo-Chun Lee, San Diego, CA (US);
Shyamal Ramachandran, San Diego, CA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
Techniques for deriving message counts based at least in part on a locally stored message count and at least a portion of a message count received from a remote network node are disclosed. The message counts can relate to downlink (DL) non-access stratum (NAS) counts. In one aspect, a device can receive a number of least significant bits of the DL NAS count in a handover message. The device can derive a DL NAS count by utilizing a remaining portion of most significant bits of a locally stored DL NAS count, and can determine whether to increment or decrement the most significant bits based at least in part on a parameter to handle cases where the least significant bits of the locally stored DL NAS count have wrapped due to overflow and/or underflow.