A routing spectrum allocation method and device based on dynamic elastic optical network

A spectrum allocation and dynamic flexibility technology, applied in multiplexing system selection devices, selection devices, electrical components, etc., can solve the problem of difficulty in meeting business bursts, real-time scene requirements, increased blocking rate, unfavorable spectrum Resource utilization and other issues, to achieve the effect of improving spectrum resource utilization efficiency, reducing blocking rate, reducing routing calculation and spectrum allocation time

Active Publication Date: 2022-06-03
FENGHUO COMM SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional route spectrum allocation is mostly based on static planning. Even dynamic planning is a way of separating routing and spectrum allocation algorithms, which is not conducive to improving the utilization of spectrum resources; The blocking rate will definitely increase, and the traditional routing spectrum allocation has been difficult to meet the needs of business bursts and real-time scenarios

Method used

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  • A routing spectrum allocation method and device based on dynamic elastic optical network
  • A routing spectrum allocation method and device based on dynamic elastic optical network
  • A routing spectrum allocation method and device based on dynamic elastic optical network

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Experimental program
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Effect test

Embodiment 1

[0053] In order to solve the technical problem that the traditional routing spectrum allocation in the elastic optical network is difficult to meet the needs of the service burst and real-time scenarios, reduce the blocking rate of the service, and improve the resource utilization rate, the embodiment of the present invention provides a dynamic elastic optical network-based routed spectrum allocation methods such as figure 1 It mainly includes the following steps:

[0054] Step 10: Calculate K alternate paths based on the service connection request, determine the modulation format of the current service on each alternate path, and calculate the number of frequency slots that the current service needs to occupy on each alternate path.

[0055] This step is mainly the selection of alternative paths and modulation formats. The specific process is as follows:

[0056] First, after receiving the service connection request (source node, sink node, access rate), calculate K alternat...

Embodiment 2

[0090] On the basis of the above Embodiment 1, the present invention further provides a specific implementation manner for the process of "selection of alternative paths and modulation formats" corresponding to step 10, such as Figure 4 It mainly includes the following steps:

[0091] Step 101: A service connection request (source node, sink node, access rate) is received.

[0092] Step 102: Determine whether it is a new ΔT period. If yes, go to step 103; if no, go to step 104 directly.

[0093] Step 103: The number of arriving service connection requests is cleared, and the number of blocked service connection requests is cleared.

[0094] Step 104: the number of service connection requests that arrive +1.

[0095] Step 105: Enable the KSP algorithm to calculate the K alternative paths of the current service.

[0096] Step 106: Determine whether the calculation of the K candidate paths is successful. If the calculation fails, go to step 107 ; if the calculation is succe...

Embodiment 3

[0102] On the basis of the above Embodiment 1, the present invention further provides a specific implementation manner for the service path and spectrum allocation process corresponding to steps 20 to 50, such as Figure 5 It mainly includes the following steps:

[0103] Step 201: Calculate the comprehensive state of each frequency slot on each candidate path.

[0104] Step 202 : According to the comprehensive state of each frequency slot, count the idle spectrum blocks on each alternative path, and express it by .

[0105] Step 203: Calculate the real-time service blocking rate according to the number of blocked service connection requests and the number of arrived service connection requests in the current network.

[0106] Step 204: Determine whether the real-time service blocking rate is greater than or equal to a preset threshold. If yes, continue to step 205; if not, jump to step 213.

[0107] Step 205: Take an alternative path to be processed, obtain each idle spectr...

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Abstract

The invention discloses a routing spectrum allocation method and device based on a dynamic elastic optical network, which calculates alternative paths based on service connection requests, determines the modulation format of the current service on each alternative path, and calculates the number of frequency slots to be occupied ; Calculate the free spectrum block on each alternative path according to the occupancy of each frequency slot on the alternative path; calculate the real-time blocking rate of the business, if the real-time blocking rate of the business is greater than or equal to the preset threshold, then select the business occupation in the alternative path Establish a service connection on the path with the smallest total number of frequency slots, and perform spectrum allocation on this path; if the real-time blocking rate of the service is less than the preset threshold, pre-allocate the spectrum for each alternative path, and select the path with the smallest number change ratio to establish the service connect. This solution can select an appropriate routing spectrum allocation strategy according to the real-time blocking rate of the business, reduce the blocking rate of the business, improve resource utilization, and meet the needs of business bursts and real-time scenarios.

Description

technical field [0001] The invention belongs to the technical field of optical fiber communication, and more particularly, relates to a method and device for routing spectrum allocation based on a dynamic elastic optical network. Background technique [0002] At present, the integration of network applications and the real economy has gradually deepened. With the rapid development of the Internet of Things and the rapid popularization of intelligent terminals, people have more and more needs for the network, and the network business volume is growing at an exponential rate. The communication-based network transmission system puts forward higher demands. Optical fiber communication has become one of the main solutions for network transmission due to its multiple advantages such as frequency bandwidth, large capacity, and strong anti-interference performance. All-Optical Networks (AON) has become an inevitable trend of future network development. . Due to its own limitations...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q11/00
CPCH04Q11/0067H04Q2011/0086
Inventor 张炳焱
Owner FENGHUO COMM SCI & TECH CO LTD
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