申请人 |
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE;SAMSUNG ELECTRONICS CO., LTD.;KT CORPORATION;SK TELECOM CO., LTD.;KTFREETEL CO., LTD.;HANARO TELECOM, INC.;SOHN, KYUNG-YEOL;YU, CHANG-WAHN;PARK, YOUN-OK |
发明人 |
SOHN, KYUNG-YEOL;YU, CHANG-WAHN;PARK, YOUN-OK |