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:
Mar. 25, 2014
Filed:
Apr. 04, 2012
Yong-seok Park, Daejeon, KR;
Jong-mok Son, Daejeon, KR;
Jae-hwan Ahn, Daejeon, KR;
Dong-wook Lee, Daejeon, KR;
Yong-ick Chung, Daejeon, KR;
Jang-hong Yoon, Daejeon, KR;
Yong-Seok Park, Daejeon, KR;
Jong-Mok Son, Daejeon, KR;
Jae-Hwan Ahn, Daejeon, KR;
Dong-Wook Lee, Daejeon, KR;
Yong-Ick Chung, Daejeon, KR;
Jang-Hong Yoon, Daejeon, KR;
Electronics & Telecommunications Research Institute, Daejeon, KR;
Abstract
A WCDMA 3G voice communication protection method and a terminal using the method are provided. The method is performed by a terminal operating in conjunction with an S-USIM for voice communication protection. When a calling terminal connects a voice communication channel to a called terminal, secure voice communication is prepared for by collecting information about relevant voice communication. At the calling terminal, synchronous data is set by exchanging the voice communication information with the called terminal, and a secure synchronization procedure is performed based on the set synchronous data. At each of S-USIMs that operate in conjunction with the calling and called terminals, a session key for secure voice communication is generated based on the synchronous data. Secure communication is performed by encrypting and transmitting voice-coded data to be transmitted based on the session key, and decrypting and reproducing received voice-coded data based on the session key.