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Wavelength allocation method and system

A wavelength allocation and wavelength technology, applied in the field of communications, can solve problems such as high overhead, and achieve the effect of reducing the number of user switching and tuning overhead.

Active Publication Date: 2018-01-26
BEIJING GUODIANTONG NETWORK TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a wavelength allocation method and system that overcomes the above problems or at least partially solves the above problems, overcomes the problem of high overhead caused by frequent switching of wavelengths in the prior art, and improves load balancing performance

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  • Wavelength allocation method and system
  • Wavelength allocation method and system

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Embodiment Construction

[0039] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0040] see figure 1 , providing a wavelength allocation method according to an embodiment of the present invention, including: S1, dividing the user traffic request behavior cycle into a plurality of switching cycles; S2, in each switching cycle, the optical line terminal OLT according to each optical network unit ONU All ONUs are grouped to form a plurality of ONU communities; S3 is to allocate corresponding available wavelengths to each ONU community, wherein, in each switching cycle, the available wavelengths allocated to each ONU community are fixed. Change.

[0041] In the TWDM-PON (based on time division wavelength division multiplexing) system, wavelength allocati...

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Abstract

The invention provides a wavelength allocation method and system. The method comprises the following steps of S1.dividing a user traffic request behavior period into a plurality of switching periods;S2.grouping all ONUs within each switching period to form a plurality of ONU communities by an optical line terminal (OLT) according to the traffic request bandwidth of each optical network unit (ONU); and S3.allocating the corresponding available wavelength to each ONU community. According to the method and the system, each user traffic request behavior period is divided into the switching periods according to the allocation condition of the request traffic bandwidth, and all ONUs are grouped within each switching period to form the ONU communities, wherein the ONU communities in each switching period and the wavelength allocated to each group of ONUs are changeless, so that the switching times of a user can be minimized and the tuning expenditure can be reduced.

Description

technical field [0001] The present invention relates to the technical field of communications, and more specifically, to a method and system for allocating wavelengths in an optical network. Background technique [0002] In the TWDM-PON (based on time division wavelength division multiplexing) system, wavelength allocation is often involved, that is, the optical line terminal OLT (optical line terminal) node needs to allocate working wavelengths and time slot. [0003] The traditional method is that the OLT obtains the traffic bandwidth requests of all ONUs through the polling mechanism, uses a fixed grouping mechanism to group all the OLTs, and assigns corresponding wavelengths and time slots to each grouped ONU community. The ONU will then be notified of the wavelength and time slot assigned to each ONU. After each ONU receives the bandwidth allocation command, it tunes to the corresponding wavelength for data transmission. Among them, the fixed grouping mechanism means...

Claims

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Application Information

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IPC IPC(8): H04J14/02H04Q11/00H04L12/803
Inventor 邓伟郭昆亚罗桓桓周桂平侯悦于波涛刘晓宁杜瑜郭一珺郝建军
Owner BEIJING GUODIANTONG NETWORK TECH CO LTD
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