Data transmission method, device and system used in optical access network

An optical interface and network-side technology, applied in the network field, can solve problems such as long distance, slow data interaction speed, inability to switch between business transmission and standby OLT, etc., and achieve the effects of improving efficiency, convenient use, and reliable data communication

Active Publication Date: 2010-02-17
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The existing technology realizes business recovery after a fault occurs through the control of the network management system. The speed of data interaction is slow, and the service transmission cannot be quickly switched to the backup OLT after the main OLT fails; and there is a physical distance between the OLT and the network management system. Far, the interactive data may need to cross multiple switching devices. If one of the switching devices fails, the communication between the OLT and the network management system will be interrupted. As a result, when the primary OLT fails, the network management system cannot obtain the fault information of the primary OLT in time. Unable to implement the active / standby OLT switchover function

Method used

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  • Data transmission method, device and system used in optical access network
  • Data transmission method, device and system used in optical access network
  • Data transmission method, device and system used in optical access network

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Embodiment Construction

[0027] An embodiment of the present invention provides an optical access system, including:

[0028] The active OLT and the standby OLT, the active OLT transmits configuration data through the ANCP (Access Node Control Protocol) protocol, so that the active OLT transmits the configuration information on it and / or on the equipment communicating with it to the standby OLT, To perform data synchronization between the active and standby OLTs. The configuration information may specifically include: at least one of configuration information of the active OLT itself and configuration information of an ONU communicating with the active OLT.

[0029] The active OLT and standby OLT may include:

[0030] The user-side interface is an optical interface for establishing a communication connection with the optical network unit on the user side;

[0031] The network-side interface is an optical interface and / or an electrical interface for establishing a communication connection with the ne...

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PUM

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Abstract

The invention relates to a data transmission method, a device and a system used in an optical access network. The method comprises the following steps that: when detecting that optical line terminal equipment breaks down, the optical line terminal equipment acquires information required for master-slave switching; and the acquired information is packaged into an access node control protocol message and is sent to a destination optical line terminal of master-slave switching directly or through an access node control protocol server so as to protect data transmission. The embodiment of the invention realizes quick and reliable data communication between a master optical line terminal (OLT) and a slave optical line terminal (OLT) and quickly realizes switching between the master optical line terminal (OLT) and the slave optical line terminal (OLT) when the master optical line terminal (OLT) and the slave optical line terminal (OLT) are required to be switched.

Description

technical field [0001] The invention relates to the field of network technology, in particular to a data transmission method, device and system in an optical access network. Background technique [0002] PON (passive optical network) technology is a point-to-multipoint optical access technology. Such as figure 1 As shown, the PON network is composed of an OLT (optical line terminal, optical line terminal), an optical splitter, an ONU (optical network unit, optical network unit) and optical fibers connecting these devices. As a central office device, the OLT is connected to an optical splitter through a backbone fiber, and the optical splitter connects each ONU through a separate branch fiber. In the downstream direction, the optical splitter realizes the optical splitting function, and sends the downlink optical signal of the OLT to all ONUs through the branch fiber; The fiber is sent to the OLT. [0003] In order to support long-distance data transmission between OLT an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q11/00H04B10/08
Inventor 牛乐宏郑若滨
Owner HUAWEI TECH CO LTD
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