United States Patent 7,904,723
Shin , et al. March 8, 2011
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Method and apparatus for enhancing security of wireless communications
Abstract
The present invention is related to a method and apparatus for enhancing security of communications. The apparatus comprises a security processing unit, a data processing unit, a cross-layer watermarking unit, and optionally a smart antenna processor. The security processing unit generates a token/key to be used in watermarking and sends a node security policy to other components. The data processing unit generates user data. The cross-layer watermarking unit includes at least one of Layer-2/3, Layer-1 and Layer-0. Each layer performs a different scheme or degree of watermarking. The cross-layer watermarking unit embeds the token/key into the user data transmission on at least one of the layers selectively in accordance with a security policy.
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Inventors: Shin; Sung-Hyuk (Northvale, NJ), Reznik; Alexander (Titusville, NJ), Zhang; Guodong (Farmingdale, NY), Chitrapu; Prabhakar R. (Blue Bell, PA)
Assignee: InterDigital Technology Corporation (Wilmington, DE)
Appl. No.: 11/192,918
Filed: July 29, 2005
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Related U.S. Patent Documents
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Application Number Filing Date Patent Number Issue Date
60643221 Jan., 2005
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Current U.S. Class: 713/176 ; 375/240; 380/28; 382/100
Current International Class: H04L 9/32 (20060101)
Field of Search: 713/176
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