METHOD FOR COMMUNICATION IN PASSIVE OPTICAL NETWOR

专利名称：METHOD FOR COMMUNICATION IN

PASSIVE OPTICAL NETWORK SYSTEM,OPTICAL LINE TERMINAL AND OPTICALNETWORK UNIT

发明人：YIN, Jinrong,ZHAO, Dianbo,YANG, Sulin申请号：EP17898999.2申请日：20170228公开号：EP3576319A1公开日：20191204

专利附图：

摘要：This application discloses a communication method, an optical line terminal, and

an optical network unit in a passive optical network system. The PON system includes anOLT and at least one ONU, and the method includes: receiving, by the OLT, a firstmessage that is sent by a first ONU in the at least one ONU through a first upstreamchannel; determining a first round trip time RTT of the first ONU based on a receivingmoment of the first message; determining a time window based on the first RTT; sendingfirst indication information to the first ONU through a downstream channel, where thefirst indication information includes the time window; receiving a second message that issent by the first ONU through a second upstream channel within the time window; anddetermining a second RTT of the first ONU based on a receiving moment of the secondmessage. According to the communication method, the optical line terminal, and theoptical network unit in the passive optical network system in embodiments of thisapplication, a delay caused by windowing activation can be effectively reduced,implementation is easy, and costs are reduced.

申请人：Huawei Technologies Co., Ltd.

地址：Huawei Administration Building Bantian Longgang Shenzhen, Guangdong518129 CN

国籍：CN

代理机构：Gill Jennings & Every LLP

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