상세정보
등록 EPON에서의 효율적인 FEC 운용제어 방법
- 출원번호
- 11005115 (2004.12.04)
- 공개번호
- 20050149822 (2005.07.07)
- 등록번호
- 7600171 (2009.10.06)
- 출원국
- 미국
- 협약과제
- 03MT1100, 초고속 광가입자망 기술개발, 양재우
- 초록
- A method of controlling a Forward Error Correction (FEC) operation including: configuring a FEC frame to be transmitted between an OLT and an ONU comprising a FEC frame identifier indicating whether FEC should be performed, data, a first flag indicating that FEC should be performed, and a second flag indicating that the FEC frame is to be FEC encoded; initializing the OLT by disabling a FEC function; determining whether the ONU requires FEC to be performed based on a FEC frame identifier received from the ONU; IPG stretching the FEC frame when the ONU requires to FEC to be performed; and transmitting the FEC frame to the ONU after FEC encoding based on the second flag of an input frame to a PCS sublayer from an upper layer. The method controls an effective operation of a FEC of an ONU and an OLT without changing a Round Trip Time (RTT) according to optical link quality in an EPON. Accordingly, FEC is used only if necessary, thereby simplifying the managing of a link, and preventing an excessive 35% reduction of throughput caused by use of unnecessary FEC.
- KSP 제안 키워드
- Effective operation, Error Correction, Forward error correction(FEC), Link quality, Round trip time, Trip time, optical link