System and method for protecting passive optical network

A technology of passive optical network and protection system, applied in the field of passive optical network protection system, can solve the problems of unseen method and device report, long distance of OLT, etc., to improve robustness and reliability, shorten recovery time, The effect of avoiding interference

Inactive Publication Date: 2007-09-19
李华
View PDF0 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in actual operation, this method has great disadvantages: usually, the physical locations of the ONUs connected to the OLT are mostly scattered, and the distance from the OLT is also relatively long
However, so far, there have been no reports of related methods and devices

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • System and method for protecting passive optical network
  • System and method for protecting passive optical network
  • System and method for protecting passive optical network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The specific implementation manners of the present invention will be described in detail below with reference to the accompanying drawings.

[0023] The present invention relates to a passive optical network system, in particular to a method and device for automatic protection of passive optical network terminal equipment (that is, optical network unit) for normal light failure.

[0024] Fig. 1 shows a topology diagram of a PON network related to the present invention. It can be seen from the figure that an OLT can be connected to multiple ONUs through an optical splitter. The downlink data transmission method from OLT to ONU is time division multiplexing and physical layer broadcast, that is, each downlink frame will be sent to the PON ports of all ONUs. The uplink data transmission method from ONU to OLT is TDMA.

[0025] Fig. 2 shows a block diagram of the passive optical network protection system of the present invention. As shown in Figure 2, the passive optical...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The present invention discloses an optical passive network protecting system and method. The system comprises a luminescence detection unit, which is used to detect the optical transmitter radiation power of the terminal device in the optical passive network; A protection control unit, which is used to judge weather the terminal device goes wrong according to the detecting result of the luminescence detection unit in a reservation time after the terminal device starts or ends sending uplink data, and direct the luminescence control unit to close the optical transmitter of the terminal device once the terminal device goes wrong; A luminescence control unit which is used to close the optical transmitter of the terminal device and isolate the terminal device with the optical passive network. The time that the optical passive network takes to recover from the constant luminescence classified fault can be greatly shortened via the invention, thus the robustness and reliability can be improved.

Description

technical field [0001] The present invention relates to the communication field, and more specifically relates to a passive optical network protection system and method. Background technique [0002] Passive Optical Network (PON) technology is an emerging broadband optical access network technology. PON is a one-to-many structure in physical topology, and a one-to-one structure in logic. The downlink data transmission is in broadcast mode, and all PON terminal devices, that is, Optical Network Unit (ONU for short) can receive all downlink data frames on their physical PON ports. The uplink is Time Division Multiple Access (TDMA for short), and each ONU only transmits in the uplink authorized time slot allocated by the PON central office equipment, that is, the optical line terminal (Optical Line Terminal, OLT for short). upstream data. [0003] Due to the adoption of the uplink TDMA access technology, the PON network faces a serious security problem. If an ONU keeps send...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/00H04B10/08H04B10/079
CPCH04B10/0791H04B10/032H04B10/2581
Inventor 于金辉谢云鹏胡晨
Owner 李华
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap