Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Wavelength allocation method of WDM-PON system

A technology of WDM-PON and wavelength allocation, which is applied in the field of wavelength allocation of WDM-PON systems, and can solve the problem that ONU does not know to use interaction

Inactive Publication Date: 2010-01-06
FENGHUO COMM SCI & TECH CO LTD
View PDF0 Cites 37 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to solve the problem that in the initial state of the WDM-PON system, the ONU does not know which wavelength to use to interact with the OLT before normal business communication

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
  • Wavelength allocation method of WDM-PON system
  • Wavelength allocation method of WDM-PON system
  • Wavelength allocation method of WDM-PON system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0029] figure 1 It is a schematic diagram of the WDM-PON system structure, such as figure 1 As shown, the WDM-PON system includes an optical line terminal (OLT). The OLT outputs the optical signal through the multiplexer / demultiplexer AWG at the OLT end. Output to multiple optical network units (ONUs). The OLT is provided with a wavelength management table for managing the wavelength used for business communication of each downlink ONU. The wavelength management table is used for wavelength division multiplexing communication between the OLT and the ONU. Wherein, the OLT includes an IEEE802.3ah OAM extension unit, a wavelength control unit, and several optical module units on this side, and the ONU includes an IEEE802.3ah OAM extension unit, a wavelength control unit, and an optical module unit on this side.

[0030] The present invention provides a WDM-PON system ...

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 invention discloses a wavelength allocation method of a WDM-PON system, which comprises the following steps: extending an OAM frame, adding wavelength management information and defining a special wavelength for sending control messages; carrying out the interaction of the control messages through wavelength management units in an OLT and an ONU and allocating upstream wavelengths and downstream wavelengths used for service allocation communication; and realizing data communication between the OLT and the ONU according to the successfully allocated upstream wavelengths and the downstream wavelengths used for the service communication. The method adds the wavelength management information into an Organization specific information TLV field by an INFO message in a discovery process of IEEE 802.3ah OAM, and other fields in the message are not modified, thus the method has clear and simple processing and flexible configuration. Hardware units in a system donot need to be modified, and processing is carried out completely depending on a software unit, thus the cost is lower. The speed and the accuracy of the data transmission of the system are greatly improved, and meanwhile, the complexity of the network operation and maintenance of the system is also reduced.

Description

technical field [0001] The invention relates to a WDM-PON system, in particular to a wavelength allocation method of the WDM-PON system. Background technique [0002] WDM-PON system has many technical advantages. First of all, the WDM-PON system can transparently transmit all business flows of various protocols; secondly, the WDM-PON system can upgrade the bandwidth without changing the physical equipment, so it can adapt to the bandwidth demand for a long time in the future and make the service life of the equipment longer. Long; Third, because the WDM-PON system allocates a wavelength for each ONU, different users do not share information, so there is no security problem that the signal can be received by all users in the WDM-PON system. [0003] The WDM-PON system can use injection locking, reflective semiconductor optical amplifier (RSOA) or tunable laser to realize the colorless design of the remote ONU optical module. Especially on the ONU side, the tunable laser mod...

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
IPC IPC(8): H04Q11/00H04J14/02
Inventor 朱丽丽张傲樊海东
Owner FENGHUO COMM SCI & TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com