Rekha S Iyer

US Patent:

20110261961, Oct 27, 2011

Filed:

Apr 21, 2011

Appl. No.:

13/091783

Inventors:

Dinesh Dharmaraju - San Diego CA, US
Adrian Edward Escott - Reading, GB
Swaminathan Sureshchandran - San Diego CA, US
Vanitha Aravadmudhan Kumar - San Diego CA, US
Masato Kitazoe - Tokyo, JP
Rekha S. Iyer - San Diego CA, US

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

H04W 12/04
H04L 9/14

US Classification:

380277

Abstract:

A method and apparatus are provided for reducing latency and/or delays in performing a security activation exchange between a communication device and a network entity. The communication device may pre-compute a plurality of possible keys using a base key and a plurality of possible inputs in anticipation of receiving an indicator from the network entity that identifies a selected input to be used in generating a corresponding selected key. An indicator is then received from the network entity, where the indicator identifies the selected input from among the plurality of possible inputs. The communication device then selects a first key among the pre-computed plurality of possible keys as the selected key upon receipt of the indicator, wherein the first key is selected because it was pre-computed using the selected input. Because the first key is pre-computed, delays in responding to the network entity are reduced.

US Patent:

20120140731, Jun 7, 2012

Filed:

Dec 1, 2010

Appl. No.:

12/958234

Inventors:

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

Assignee:

QUALCOMM INCORPORATED - San Diego CA

International Classification:

H04W 36/00

US Classification:

370331

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.

US Patent:

8577379, Nov 5, 2013

Filed:

Jan 6, 2004

Appl. No.:

10/752607

Inventors:

Guangming Shi - San Diego CA, US
Andrew Torchalski - Longmont CO, US
Rekha Iyer - San Diego CA, US
Venkat Tangirala - San Diego CA, US
Ting Mui Li - San Diego CA, US

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

H04W 40/00

US Classification:

455445, 4554353, 4554321, 455418, 455417, 455410, 4554141, 4555521, 455565, 4551861, 4555501, 4555751, 4554041, 4554144, 455521, 455512

Abstract:

Systems and techniques are disclosed relating to communications. The systems and techniques include receiving an origination request for a call, determining whether the call is allowed on each of a plurality of wireless networks as a function of the origination request, and originating the call over a network selected from a plurality of networks. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.