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성과물

특허 검색
구분 출원국
출원년도 ~ 키워드

상세정보

등록 광 네트워크 단말, 그의 시간 동기화 방법, 광 회선 단말 및 그의 네트워크 관리 방법

광 네트워크 단말, 그의 시간 동기화 방법, 광 회선 단말 및 그의 네트워크 관리 방법
이미지 확대
발명자
김성창, 김근용, 이동수, 이영석, 유학, 이문섭, 고재상, 김종덕
출원번호
12902273 (2010.10.12)
공개번호
20110129218 (2011.06.02)
등록번호
8542995 (2013.09.24)
출원국
미국
협약과제
초록
A method for synchronizing time by an optical network terminal (ONT) in a passive optical network system is provided. The method includes: receiving a ranging request message including a first current time of an optical line terminal (OLT); calculating a first compensation time when a transmission delay is compensated at a time that the ranging request message is received; transmitting a serial number response message to the OLT; calculating a second compensation time when the transmission delay is compensated at a time when the serial number response message is transmitted; receiving a ranging time message including a second current time when the serial number response message from the OLT is received; calculating an offset time from the first current time, the second current time, the first compensation time, and the second compensation time; and synchronizing a clock of the ONT and a clock of the OLT based on the offset time.
KSP 제안 키워드
Network system, Offset time, Optical Network Terminal(ONT), Optical line terminal(OLT), Optical network, Passive optical network, Serial number, transmission delay