A resource reconfiguration method based on service remaining time sorting in elastic switching network

A technology of residual time and switching network, applied in the direction of data switching network, digital transmission system, electrical components, etc., can solve the problems of frequent link sorting, non-continuous number of frequency slots, and high service blocking rate, so as to reduce service blocking rate, reduce the number of link reconfigurations, and reduce the effects of spectrum fragmentation

Inactive Publication Date: 2016-01-20
BEIJING UNIV OF POSTS & TELECOMM
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  • Description
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Problems solved by technology

[0005] The purpose of the present invention is to solve the frequency slot released by the FF algorithm service when transmitting a service whose required transmission time can be estimated by a computer in the spectrum fragmentation elastic optical network, and when the spectrum resources of each link are reconfigured The number cannot achieve the maximum possible continuity, the link sorting is frequent, and the business blocking rate is high

Method used

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  • A resource reconfiguration method based on service remaining time sorting in elastic switching network
  • A resource reconfiguration method based on service remaining time sorting in elastic switching network
  • A resource reconfiguration method based on service remaining time sorting in elastic switching network

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Embodiment 1

[0022] When sorting according to the size of the remaining time of the business, the business is arranged from the left end to the right end of the spectrum in the order of the remaining time from less to more, such as figure 2 shown.

[0023] After sorting, the frequency slot time occupied by the business can be reduced to 0 with the continuation of time.

[0024] Since the remaining time of services occupying the left side of the spectrum is less than the remaining time of services occupying the right side of the spectrum, resources are vacated on the left side of the spectrum earlier than on the right side. As the service duration ends sequentially, spectrum resources are vacated from left to right.

[0025] Since the services are arranged from the left end to the right end of the frequency spectrum in descending order of the remaining time, after the spectrum resource is vacated, it can form a continuous idle frequency spectrum with the idle spectrum of the original adjac...

Embodiment 2

[0030] When sorting according to the order of the remaining time of the business, the business is arranged from the left end to the right end of the spectrum in order of the remaining time from more to less, such as image 3 shown.

[0031] After sorting, the frequency slot time occupied by the business can be reduced to 0 with the continuation of time.

[0032] Since the remaining time of services occupying the left side of the spectrum is less than the remaining time of services occupying the left side of the spectrum, resources are vacated on the right side of the spectrum earlier than on the left side. As the service duration ends sequentially, spectrum resources are vacated sequentially from right to left.

[0033] Since the services are arranged from the left end to the right end of the spectrum according to the order of the remaining time from more to less, after the spectrum resource is vacated, it can form a continuous idle spectrum with the idle spectrum of the origi...

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Abstract

The invention discloses a resource reconstruction method based on service remaining time sequencing in an elastic exchange network, relating to the field of elastic exchange networks. According to the method, service transmission time is taken as a parameter for encapsulating into each frequency slot occupied by a service of which the needed transmission time can be estimated with a computer when the service is transmitted and resources are distributed to the service. When services of this type are transmitted in the network and spectral reconstruction of network resources is needed, the services are arranged from the left end to the right end of a frequency spectrum according to a service remaining time sequencing way, and released frequency slot resources can construct continuous frequency spectrum resources along with the continuation of time when the frequency slot occupation time of the services is reduced to zero along with the continuation of time, so that maximum continuation of idle frequency slots is realized, frequency spectrum fragments are reduced, the spectral reconstruction times are reduced, and the service blocking rate is reduced.

Description

technical field [0001] The invention belongs to the field of elastic switching networks, and relates to a method for reconfiguring resources based on remaining time sorting in elastic interactive networks. Background technique [0002] The concept of spectrum slicing elastic optical network: Allocate resources with a granularity better than one wavelength, that is, divide a wavelength into frequency slots with smaller intervals. The purpose of spectrum fragmentation elastic optical network is to provide 100Gb / s or higher services by introducing elastic granularity in the optical frequency domain. The spectrum resources on a given route are fragmented to allocate an appropriate size for the end-to-end optical path rather than fixed The size of the bandwidth. In the spectrum slicing elastic optical network, the optical path expands or shrinks according to the traffic and user demand. It is special in the segmentation and aggregation of spectrum resources, efficient allocation...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/911H04J14/02
Inventor 张民张娟黎亮张治国黄善国谢久雨
Owner BEIJING UNIV OF POSTS & TELECOMM
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