公开(公告)号：US20220103260A1

公开(公告)日：2022-03-31

申请号：US17488918

申请日：2021-09-29

Applicant: Nokia Solutions and Networks Oy

Inventor： Chenhui YE ,  Dongxu ZHANG ,  Dan GENG ,  Werner VAN HOOF

IPC: H04B10/27 ,  H04Q11/00

Abstract: Embodiments of the present disclosure relate to devices, methods, apparatuses and computer readable storage media of ONU activation for OLT Equalizer training. The method includes determining, at OLT, configuration information indicating a bandwidth allocation dedicated for an ONU and a first target preamble sequence associated with the bandwidth allocation, the first target preamble sequence to be used by the ONU for a transmission from the ONU to the OLT on a first wavelength; transmitting the configuration information to the ONU; and receiving the transmission from the ONU from the ONU on the first wavelength, the transmission is performed by the ONU based on the first target preamble sequence.

公开(公告)号：US20240414459A1

公开(公告)日：2024-12-12

申请号：US18735540

申请日：2024-06-06

Applicant: Nokia Solutions and Networks Oy

Inventor： Dan GENG ,  Hai Jun LU ,  Werner VAN HOOF

IPC: H04Q11/00

Abstract: Embodiments of the present disclosure relate to an optical line terminal (OLT), an optical network unit (ONU), communication methods, communication apparatuses, and computer-readable media. In an exemplary method, the OLT determines an optical communication capability of the OLT which includes at least one of the following: at least two upstream wavelength options supported by the OLT, a passive optical network (PON) mode associated with the OLT, and an upstream modulation format used by the OLT. In the method, the OLT further transmits, to the ONU, at least one indicator indicating the optical communication capability. In this way, the OLT can negotiate the optical communication capability with the ONU, thus avoiding data transmission failures or performance degradation caused by device incompatibility.

公开(公告)号：US20210320743A1

公开(公告)日：2021-10-14

申请号：US17226666

申请日：2021-04-09

Applicant: Nokia Solutions and Networks Oy

Inventor： Dan GENG ,  Werner VAN HOOF ,  Lina GUO ,  Lifei SUN

IPC: H04J14/02 ,  H04Q11/00

Abstract: A method for channel management in an optical network unit includes receiving a disable channel action message sent by an optical line terminal, wherein the disable channel action message is used to instruct disabling a first channel of the optical network unit; transferring the state machine of the optical network unit on the first channel from the association substate of the operation state to the pending substate according to the disable channel action message; and turning off the transmitter and/or the receiver on the first channel after a specified time is reached, transferring the state machine from the pending substate of the operation state to the disabling channel status, and starting a timer.