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EP 1 938 518 A1

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(43) Date of publication: 02.07.2008 Bulletin 2008/27 (21) Application number: 06783736.9 (22) Date of filing: 24.08.2006

(51) International Patent Classification (IPC):  H04L 12/46(2006.01) (86) International application number: PCT/KR2006/003349 (87) International publication number: WO 2007/024115 (01.03.2007 Gazette 2007/09)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (30) Priority: 26.08.2005 KR 20050078824 23.08.2006 KR 20060080075 (71) Applicant: Electronics and Telecommunications Research Institute Daejeon 305-350 (KR)

(72) Inventors: CHEON, Kyung-Yul Daejeon 305-350 (KR) RO, Kwang-Hyun Daejeon 305-350 (KR) SHIN, Jae-Wook Daejeon 305-350 (KR) KWON, Hye-Yeon Daejeon 305-350 (KR) SHIN, Hyung-Cheol Daejeon 305-350 (KR) JUNG, Kwang-Ryul Daejeon 305-350 (KR) HWANG, You-Sun Daejeon 305-350 (KR) PARK, Ae-Soon Daejeon 305-350 (KR) (74) Representative: Betten & Resch  Patentanwälte Theatinerstrasse 8 80333 München 80333 München (DE)