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Adaptive load balancing energy consumption optimization method and system in spectrum flexible optical network

A technology of adaptive load and optimization method, applied in the field of optical communication, which can solve the problems of not taking into account the load usage of optical fiber links, not considering the problem of network load and energy consumption, and unable to guarantee the minimum energy consumption of the connection request working path.

Active Publication Date: 2017-12-01
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the network load and energy consumption are not considered during the establishment of the connection request, it cannot be guaranteed that the working path selected by the connection request has the least energy consumption, nor does it take into account the load usage of the optical fiber link in the working path established by the connection request

Method used

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  • Adaptive load balancing energy consumption optimization method and system in spectrum flexible optical network
  • Adaptive load balancing energy consumption optimization method and system in spectrum flexible optical network
  • Adaptive load balancing energy consumption optimization method and system in spectrum flexible optical network

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Experimental program
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Effect test

Embodiment 1

[0064] Such as figure 1 As shown, the adaptive load balancing energy consumption optimization method in the spectrum flexible optical network of this embodiment includes:

[0065] For each connection request in a group of connection request sets, K shortest path algorithms are used to calculate K candidate paths from the source node to the destination node for the connection request;

[0066] Calculate the energy consumption of the connection request using each candidate path for transmission, and prioritize the energy consumption corresponding to each candidate path from low to high. The lower the energy consumption, the higher the priority;

[0067] According to the priorities of the K candidate paths, select a candidate path with a high priority to allocate spectrum resources, specifically including: searching for bandwidth resources required to meet the connection request according to the spectrum gap required by the connection request, and allocating the connection reques...

Embodiment 2

[0079] Such as figure 2 As shown, the adaptive load balancing energy consumption optimization method in the spectrum flexible optical network of this embodiment includes: on the basis of Embodiment 1, before calculating the K candidate paths for each connection request, first perform a load balancing adjustment step, so The load balancing adjustment steps described above include: traversing each fiber link in the spectrum flexible optical network topology, and dynamically adjusting the transmission distance increase of the fiber link when the spectrum resource occupancy rate of the fiber link is higher than the set threshold It is β times larger than the original one, where β>1, and the transmission distance of each fiber link after adaptive load balancing is expressed by the following formula:

[0080]

[0081] In the formula, Indicated in the fiber link (v i , v j ) the optical fiber link transmission distance after mid-distance adaptive load balancing; Indicates t...

Embodiment 3

[0086] Such as image 3 As shown, the adaptive load balancing energy consumption optimization system in the spectrum flexible optical network of this embodiment can run the method described in the above-mentioned embodiment 1, and the system includes:

[0087] The candidate path calculation module is used to calculate K candidate paths from the source node to the destination node for the connection request by using K shortest path algorithms for each connection request in a group of connection request sets;

[0088] Divide the bandwidth requirement of the connection request CR(s,d,FS) into multiple line-rate spectrum channels for transmission, where s and d represent the source node and destination node of the connection request respectively, and FS represents the Bandwidth requirements are divided into a group of multiple line rates, exist expressed as B r 1 Line rate, |R| indicates the total number of line rates;

[0089] The number calculation module of optical regene...

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Abstract

The invention relates to an adaptive load balancing energy consumption optimization method and system in a spectrum flexible optical network, which is designed in order to effectively improve the spectrum resource efficiency of the optical network and reduce the energy consumption of the optical network. Different linear rate and modulation format combinations are adopted for each connection request so as to bear bandwidth requirements of the connection request, and the weight of each optical fiber link is dynamically adjusted according to a distance-adaptive load balance adjustment method so as to enable the connection request to select a lightly-loaded optical fiber link to act as a transmission path. According to the invention, some short-distance optical fiber links are avoided from being selected by excessive connection requests to result in congestion, thereby improving the resource efficiency of the spectrum flexible optical network, and realizing high energy consumption efficiency.

Description

technical field [0001] The invention belongs to the technical field of optical communication, and in particular relates to an adaptive load balancing energy consumption optimization method and system in a spectrum flexible optical network. Background technique [0002] In recent years, with the development of application services such as mobile Internet, big data, cloud computing, and data centers, the energy consumption of the network has risen sharply, making it difficult to meet the network's demand for business service quality, which will easily lead to a decrease in network resource efficiency and energy consumption efficiency, making the network Operations are extremely challenging. Traditional network energy-saving methods and mechanisms will be greatly threatened. In particular, in the traditional energy-saving solution, the ports of the optical-layer energy-consuming components that transmit service traffic are not properly reduced or increased according to the cha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/803H04Q11/00
CPCH04L47/125H04Q11/0062H04Q2011/0086
Inventor 陈伯文张捷高明义沈纲祥
Owner SUZHOU UNIV
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