ETRI-Knowledge Sharing Plaform

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성과물

특허 검색
구분 출원국
출원년도 ~ 키워드

상세정보

등록 무선 휴대 인터넷 시스템에서의 트래픽 암호화 키 관리 방법

무선 휴대 인터넷 시스템에서의 트래픽 암호화 키 관리 방법
이미지 확대
발명자
조석헌, 윤철식
출원번호
11921894 (2006.06.09)
공개번호
20090235075 (2009.09.17)
등록번호
8160254 (2012.04.17)
출원국
미국
초록
The present invention relates to a method for managing a group traffic encryption key (GTEK) in a wireless portable Internet system. In the method, for higher security of a group traffic service such as a multicast service, a broadcast service, and a multicast-broadcast service (MBS), a base station periodically generates and distributes a GTEK to a subscriber station served with the group traffic service. A lifetime of a group key encryption key (GKEK) used for encrypting a GTEK is set greater than that of the GTEK. That is, the GKEK is updated once while the GTEK is updated several times. According to the present invention, security for the group traffic service is increased while reducing radio resource consumption.