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Method and device for realizing load balancing in time wavelength division multiplexing passive optical network system

A technology of passive optical network and time-wavelength division multiplexing, which is applied in the direction of transmission system, digital transmission system, data exchange network, etc., can solve the problem of high bandwidth, wavelength channel overload or insufficient resource utilization, bandwidth resource utilization Low-level problems, to achieve high bandwidth utilization, uniform use of system resources, and improve work efficiency

Active Publication Date: 2016-05-25
FENGHUO COMM SCI & TECH CO LTD
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Problems solved by technology

Since the TWDM-PON system uses the stacking of wavelength channels, the above-mentioned disadvantages of wavelength channel overload or insufficient resource usage are magnified by N times by the use of N wavelength channels
In view of this, it is difficult for TWDM-PON system to fully use its inherent high bandwidth to provide services, and the utilization rate of bandwidth resources is low

Method used

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  • Method and device for realizing load balancing in time wavelength division multiplexing passive optical network system
  • Method and device for realizing load balancing in time wavelength division multiplexing passive optical network system
  • Method and device for realizing load balancing in time wavelength division multiplexing passive optical network system

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Embodiment Construction

[0048] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0049] see figure 1 As shown, the TWDM passive optical network system in the embodiment of the present invention includes an OLT and several ONUs (ONU1 to ONUm) communicating with it, and several OLTCTs (OLTCT1 to OLTCTn) are arranged in the OLT, and each OLTCT It is configured with a DBA (DynamicBandwidthAssignment, dynamic bandwidth assignment) module and corresponding wavelength channels. The DBA modules of all wavelength channels in the present invention do not reserve any bandwidth resources, and all bandwidth resources are allocated after the ONU goes online and is authenticated by the TWDM-PON system. On this basis, see figure 2 As shown, the method for realizing load balancing in the TWDM passive optical network system in the embodiment of the present invention includes the following steps:

[0050] S1: After the ONU starts up, ran...

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Abstract

The invention discloses a method and a device for realizing load balancing in a time wavelength division multiplexing passive optical network system, and relates to the field of TWDM-PON. The flow of the method is as follows: DBA modules of all wavelength channels reserve no bandwidth resource, and only calculate the residual bandwidths of all wavelength channels only when ONU is started and online; and the wavelength channel having the most residual bandwidth resources and conforming to ONU business service agreement is selected, and a bandwidth is configured to the ONU on the wavelength channel and is authorized for use. The method and the device disclosed by the invention can be used for fully utilizing the bandwidth resources while guaranteeing the ONU service, so that the utilization rate of the bandwidth resources in a TWDM-PON system can be not only improved significantly, the working efficiency is relatively high, and the operation cost is relatively low.

Description

technical field [0001] The invention relates to the field of TWDM-PON (Time Wavelength Division Multiplexing Passive Optical Network), in particular to a method and device for realizing load balancing in a Time Wavelength Division Multiplexing Passive Optical Network system. Background technique [0002] PON (Passive Optical Network, Passive Optical Network) technology is a broadband optical access technology based on optical fiber. The PON system includes OLT (Optical Line Terminal, Optical Line Terminal) and ONU (Optical Network Unit, Optical Network Unit). OLT passes ODN (Optical Distribution Network, Optical Distribution Network ) to communicate with the ONU. Because of the PON system has many advantages such as high bandwidth, high efficiency, large coverage, and rich user interfaces, most operators have achieved broadband access network services, comprehensive transformation and extensive layout of the PON system, and have won a large number of users. experience. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/801H04L12/803
CPCH04L47/125H04L47/16
Inventor 刘静霞
Owner FENGHUO COMM SCI & TECH CO LTD
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