Method for determining training sequence and related equipment

A technology of training sequence and determination method, applied in the field of optical communication, can solve the problems of insufficient optical devices to meet the bandwidth requirements of high-speed PON, affecting OLT performance, inter-symbol crosstalk, etc., to eliminate ISI, improve performance, and compensate for channel impairments.

Pending Publication Date: 2021-12-21
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology allows computers on different parts (hardware) to communicate more efficiently without causing interference from other devices' signals. When this happens, it sends specific sequences that are used during communication between them. These sequences help improve signal quality while reducing errors caused by noise sources like radio waves transmitted through wireless networks.

Problems solved by technology

This patented technical problem addressed in this patents relates to improving the transmission speed for Passive Opthalmunications systems (PONs), particularly when increasing their data rates beyond 250 Gigabits per second (GHz). These limitations can cause ISI that degrade signal quality or even damage equipment over time due to electrical signals generated during Inter symbolinterferences caused by these higher speeds.

Method used

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  • Method for determining training sequence and related equipment
  • Method for determining training sequence and related equipment
  • Method for determining training sequence and related equipment

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Embodiment Construction

[0048] The present application provides a method for determining a training sequence and related equipment. The ONU determines the training sequence according to the instructions of the OLT, and sends the training sequence to the OLT. The OLT determines the working parameters of the equalizer according to the training sequence. Through the equalizer, the channel damage can be compensated, and ISI can be effectively eliminated, which improves the performance of the OLT.

[0049] Current broadband access technologies are mainly divided into copper wire access technologies (such as various DSL technologies) and optical access technologies. An access network implemented by an optical access technology is called an optical access network (OAN).

[0050] Passive optical network (PON) is an implementation technology of optical access network. PON is an optical access technology for point-to-multipoint transmission. The system architecture of PON is introduced below.

[0051] figur...

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Abstract

The invention provides a method for determining a training sequence and related equipment. The method provided by the embodiment of the invention comprises the following steps: the ONU receives a first message sent by the OLT; and then, the ONU determines a target training sequence according to the first message, and the target training sequence is used for determining working parameters of an equalizer in the OLT. Further, the ONU generates a first data frame including the target training sequence. In the application, the OLT can perform training according to the received target training sequence to determine the working parameters of the equalizer in the OLT, thereby compensating channel damage through the equalizer, effectively eliminating ISI, and improving the performance of the OLT.

Description

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Claims

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Application Information

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Owner HUAWEI TECH CO LTD
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