发明名称 |
OPTICAL NETWORK TERMINAL, METHOD FOR TIME SYNCRONIZATION THEREOF, OPTICAL LINE TERMINAL, AND METHOD FOR MANAGING NETWORK THEREOF |
摘要 |
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.
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申请公布号 |
US2011129218(A1) |
申请公布日期 |
2011.06.02 |
申请号 |
US20100902273 |
申请日期 |
2010.10.12 |
申请人 |
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE |
发明人 |
KIM SUNG CHANG |
分类号 |
H04J14/00 |
主分类号 |
H04J14/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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