Fault diagnosis device of broadband access network

A fault diagnosis device and a technology for a broadband access network, which are applied to the selection device, selection device, data exchange network and other directions of a multiplexing system, can solve the problems of restricting the application and development of OTDR technology and high cost, and achieve low cost, high cost, and high cost. Compatible effect

Active Publication Date: 2016-12-07
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to its high cost, OTDR also restricts the application and development of OTDR technology.

Method used

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  • Fault diagnosis device of broadband access network
  • Fault diagnosis device of broadband access network
  • Fault diagnosis device of broadband access network

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Embodiment

[0044] figure 2 It is a structural diagram of the fault diagnosis device of the broadband access network of the present invention. like figure 2 As shown, the fault diagnosis device of the broadband access network of the present invention includes a data packet capture module 1, a protocol filtering module 2, an MPCP protocol fault diagnosis module 3, an OAM protocol fault diagnosis module 4 and a fault alarm module 5. Each module is described below:

[0045] ●Data packet capture module

[0046] The data packet capture module 1 is connected to the OLT in the broadband access network, and captures uplink and downlink data packets between the OLT and each ONU. like figure 2 As shown, the data packet capture module 1 is connected to an optical splitter under a PON port of the OLT to obtain uplink and downlink data packets. In this embodiment, the device for capturing data packets adopts a protocol analyzer. The protocol analyzer acts as an ONU in the downlink direction, a...

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Abstract

The invention discloses a fault diagnosis device of a broadband access network. A data message capturing device captures to obtain uplink and downlink data messages between an OLT (Optical Line Termination) and each ONU (Optical Network Unit). A protocol filtering module analyzes the uplink and downlink data messages, screens the data messages corresponding to an MPCP (Multi-Point Control Protocol) and an OAM (Operation Administration and Maintenance) protocol and sends the data messages to an MPCP protocol fault diagnosis module and an OAM protocol fault diagnosis module. The MPCP protocol fault diagnosis module subdivides to obtain subtypes of the MPCP protocol data message and detects through an ONU register finite state machine to obtain an MPCP protocol fault. The OAM protocol fault diagnosis module analyzes the OAM protocol data message to obtain an OAM protocol fault. A fault alarm module alarms the faults obtained through diagnosis. According to the device, through adoption of a protocol analysis method, the fault information is extracted from the MPCP protocol data message and the OAM protocol data message, thereby realizing fault diagnosis of the broadband access network.

Description

technical field [0001] The invention belongs to the technical field of broadband access networks, and more specifically relates to a fault diagnosis device for broadband access networks. Background technique [0002] The passive optical network (Passive Optical Network, PON) network access technology has been fully used in the field of broadband access network due to its advantages of multi-service, high bandwidth, low cost and strong scalability. figure 1 It is a structural example diagram of a tree-structured PON network. like figure 1 As shown, the PON network is a single-fiber bidirectional access network system, which consists of an OLT (Optical Line Termination, Optical Line Terminal) at the central office, an ODN (Optical Distribution Network, Optical Distribution Network) and an ONU (Optical Network Unit, Optical Network Unit) at the user side. Network unit) consists of three parts. Wherein, the signal sent by the OLT reaches a single ONU through the ODN is the do...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04Q11/00
CPCH04L41/06H04Q11/0067
Inventor 张崇富尹海明钟轶文邱昆
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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