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.