公开(公告)号：US10727939B2

公开(公告)日：2020-07-28

申请号：US16552703

申请日：2019-08-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jinrong Yin ,  Dianbo Zhao ,  Sulin Yang

IPC: H04B10/272 ,  H04B10/079 ,  H04B10/40 ,  H04J14/02 ,  H04L29/12

Abstract: 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 an OLT and at least one ONU, and the method includes: receiving, by the OLT, a first message that is sent by a first ONU in the at least one ONU through a first upstream channel; determining a first round trip time (RTT) of the first ONU based on a receiving moment of the first message; determining a time window based on the first RTT; sending first indication information to the first ONU through a downstream channel, where the first indication information includes the time window; receiving a second message that is sent by the first ONU through a second upstream channel within the time window; and determining a second RTT of the first ONU based on a receiving moment of the second message.

公开(公告)号：US10756841B2

公开(公告)日：2020-08-25

申请号：US16418886

申请日：2019-05-21

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huafeng Lin ,  Jinrong Yin ,  Dianbo Zhao ,  Xifeng Wan ,  Shiwei Nie ,  Gang Zheng ,  Zhijing Luo ,  Xiaofei Zeng ,  Jun Luo

IPC: H04J14/02

Abstract: The present disclosure relates to passive optical network (PON) systems, optical line terminals (OTLs), and optical network units (ONUs). One example PON system includes an OLT and at least two ONUs. The OLT and the ONUs exchange data on one downstream channel and two upstream channels. The OLT sends downstream data to each ONU on the downstream channel, where the downstream data includes an upstream bandwidth grant used to control each ONU to send upstream data. Each ONU receives the downstream data on the downstream channel, and sends the upstream data on a first upstream channel or a second upstream channel based on the upstream bandwidth grant included in the downstream data. The OLT receives, on the first upstream channel and the second upstream channel, the upstream data sent by each ONU, where a registration function is disabled on the first upstream channel, and enabled on the second upstream channel.

公开(公告)号：US11374674B2

公开(公告)日：2022-06-28

申请号：US16988066

申请日：2020-08-07

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huafeng Lin ,  Jinrong Yin ,  Dianbo Zhao ,  Xifeng Wan ,  Shiwei Nie ,  Gang Zheng ,  Zhijing Luo ,  Xiaofei Zeng ,  Jun Luo

IPC: H04J14/02

Abstract: The present disclosure relates to passive optical network (PON) systems, an optical line terminal (OLT), and an optical network unit (ONU). One example PON system includes an OLT and at least two ONUs, and the OLT and the ONUs exchange data on one downstream channel and two upstream channels. The OLT sends downstream data to each ONU on the downstream channel, where the downstream data includes an upstream bandwidth grant which is used to control the ONU to send upstream data. Each ONU receives the downstream data on the downstream channel, and sends the upstream data on a first upstream channel or a second upstream channel based on the upstream bandwidth grant included in the downstream data. The OLT receives, on the first upstream channel and the second upstream channel, the upstream data sent by each ONU.

公开(公告)号：US20180077475A1

公开(公告)日：2018-03-15

申请号：US15818108

申请日：2017-11-20

Applicant: Huawei Technologies Co., Ltd.

Inventor： Fei Ye ,  Dianbo Zhao ,  Guikai Peng ,  Huafeng Lin ,  Ning Cheng ,  Xiaofeng Zhang ,  Dajiang Tang ,  Zhenping Wang

IPC: H04Q11/00

CPC classification number: H04Q11/0067 ,  H04B10/272 ,  H04J14/00 ,  H04Q11/0003 ,  H04Q11/0005 ,  H04Q2011/0049 ,  H04Q2011/0088 ,  H04Q2213/13168

Abstract: A framing method and apparatus in a passive optical network (PON) and a system, where the method includes generating a first transmission convergence (TC) frame and a second TC frame separately, wherein a sum of frame lengths of the first and the second TC frame is 125 microseconds (μs), performing bit mapping on the second TC frame to generate a third TC frame, where the bit mapping refers to identifying each bit of the second TC frame using N bits, and sending the first and the second TC frame to an optical network unit (ONU). A line rate corresponding to the second TC frame is lower than 2.488 giga bits per second (Gbps) such that a rate of a receiver on a receiving side is decreased and a bandwidth of the receiver is narrowed, thereby decreasing an optical link loss and increasing an optical power budget.

公开(公告)号：US10667025B2

公开(公告)日：2020-05-26

申请号：US15818108

申请日：2017-11-20

Applicant: Huawei Technologies Co., Ltd.

Inventor： Fei Ye ,  Dianbo Zhao ,  Guikai Peng ,  Huafeng Lin ,  Ning Cheng ,  Xiaofeng Zhang ,  Dajiang Tang ,  Zhenping Wang

IPC: H04Q11/00 ,  H04J14/00 ,  H04B10/272

Abstract: A framing method and apparatus in a passive optical network (PON) and a system, where the method includes generating a first transmission convergence (TC) frame and a second TC frame separately, wherein a sum of frame lengths of the first and the second TC frame is 125 microseconds (μs), performing bit mapping on the second TC frame to generate a third TC frame, where the bit mapping refers to identifying each bit of the second TC frame using N bits, and sending the first and the second TC frame to an optical network unit (ONU). A line rate corresponding to the second TC frame is lower than 2.488 giga bits per second (Gbps) such that a rate of a receiver on a receiving side is decreased and a bandwidth of the receiver is narrowed, thereby decreasing an optical link loss and increasing an optical power budget.

公开(公告)号：US20190386743A1

公开(公告)日：2019-12-19

申请号：US16552703

申请日：2019-08-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jinrong Yin ,  Dianbo Zhao ,  Sulin Yang

IPC: H04B10/079 ,  H04J14/02 ,  H04B10/40

Abstract: 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 an OLT and at least one ONU, and the method includes: receiving, by the OLT, a first message that is sent by a first ONU in the at least one ONU through a first upstream channel; determining a first round trip time (RTT) of the first ONU based on a receiving moment of the first message; determining a time window based on the first RTT; sending first indication information to the first ONU through a downstream channel, where the first indication information includes the time window; receiving a second message that is sent by the first ONU through a second upstream channel within the time window; and determining a second RTT of the first ONU based on a receiving moment of the second message.