公开(公告)号：US10855397B2

公开(公告)日：2020-12-01

申请号：US16250708

申请日：2019-01-17

Applicant: Huawei Technologies Co., Ltd.

Inventor： Bo Gao ,  Shiwei Nie ,  Lei Jing ,  Zhenping Wang

IPC: H04L1/00 ,  H04B10/516 ,  H04B10/27 ,  H04L7/00 ,  H04J14/02

Abstract: A downstream data frame transmitting method includes: generating, by an optical line terminal (OLT), a downstream data frame, where the downstream data frame includes a frame header and a payload, the frame header includes a physical synchronization sequence (Psync) field, and the Psync field is used to identify the downstream data frame, where when a value of the Psync field is a first value, the Psync field is further used to indicate that payload data is protected by forward error correction (FEC); or when a value of the Psync field is a second value, the Psync field is further used to indicate that payload data is not protected by FEC; and sending, by the OLT, the downstream data frame. Embodiments of the present invention can reduce a bit error rate of a FEC indication status and improve reliability of the FEC indication status.

公开(公告)号：US20200295870A1

公开(公告)日：2020-09-17

申请号：US16889053

申请日：2020-06-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Lei Jing ,  Bo Gao ,  Shiwei Nie ,  Dekun Liu

IPC: H04L1/00 ,  H03M13/03 ,  H04Q11/00

Abstract: A data encoding method and apparatus and a data decoding method and apparatus in a passive optical network (PON) system include collecting N data blocks at a physical coding sublayer and generating valid data by combining the N data blocks, generating a payload, where the payload includes the valid data, performing FEC encoding on the payload to generate a check part, and generating a codeword structure. The synchronization header may be located at the head or the tail of the codeword structure.

公开(公告)号：US20190207680A1

公开(公告)日：2019-07-04

申请号：US16298677

申请日：2019-03-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zhenping Wang ,  Bo Gao ,  Shiwei Nie ,  Lei Jing ,  Xuming Wu

IPC: H04B10/27 ,  H04J14/08 ,  H04L29/12

CPC classification number: H04B10/27 ,  H04J14/08 ,  H04L29/06 ,  H04L61/6022

Abstract: Embodiments of the present invention disclose an EPON communication method, an ONU, and an OLT. The method includes: generating, by an ONU, a first control frame, where the first control frame includes a first data field, and the first data field includes a bandwidth requirement of the at least one LLID; and sending, by the ONU, the first control frame to an OLT. In addition, the OLT generates a second control frame, where the second control frame includes a second data field, and the second data field includes grant information of the at least one LLID; and the OLT sends the second control frame to the ONU. In the embodiments of the present invention, the first control frame may carry bandwidth requirements of a plurality of LLIDs, so that one first control frame can be used to report bandwidth requirements of a plurality of LLIDs.