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Method for self-adaptive weight grooming of dynamic service flow in optical network

An adaptive weight, optical network technology, used in data exchange networks, digital transmission systems, electrical components, etc., can solve problems such as being unable to adapt to the load and resource consumption status, not considering scarce resource information, and inability to distinguish congestion levels. , to achieve a good load balancing effect, improve resource utilization, and save resources.

Inactive Publication Date: 2014-04-16
XIDIAN UNIV +1
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  • Claims
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Problems solved by technology

The disadvantage of this method is that it cannot distinguish the degree of congestion of different available existing optical paths when designing link weights, the load balancing effect is not good, and the new optical path cannot adapt to the overall network load and resource consumption status. Nor does it take into account scarce resource information

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  • Method for self-adaptive weight grooming of dynamic service flow in optical network
  • Method for self-adaptive weight grooming of dynamic service flow in optical network
  • Method for self-adaptive weight grooming of dynamic service flow in optical network

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Embodiment Construction

[0043] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0044] Reference attached figure 1 The specific implementation method of the present invention is as follows:

[0045] Step 1. Input network topology information. The present invention can be applied to various WDM mesh network topologies. In order to illustrate the performance of the present invention in actual networks, the topology used in simulation is as attached figure 2 The typical telecommunication backbone network topology shown.

[0046] Enter the initial resource configuration information, including the number of optical transceivers of each node, the number of wavelengths of each physical link, and the bandwidth of each wavelength.

[0047] Step 2. Initialize the event list:

[0048] Fill in the event data structure with the information of services that are dynamically arrived in the optical network, and set the type of event corresponding to the event dat...

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Abstract

The invention discloses a method for self-adaptive weight grooming of a dynamic service flow in an optical network. Through the reasonable arrangement of the optical path weight, the problem that the resource use rate is low due to the fact that a newly-established optical path is insufficiently considered in an existing method is solved. The method for self-adaptive weight grooming of the dynamic service flow in the optical network mainly comprises the steps that firstly, network topological information and initial resource allocation information are input and an event list is initialized according to information of dynamically-arrived services; then events in the event list are processed in sequence; if the events are arrival events, the optical path weight is updated, shortest paths are selected for the services corresponding to the arrival events, and network resources and the event list are updated; if the events are departure events, the network resources and the event list are updated; event processing operation is repeated until the whole event list is completely processed. According to the method for self-adaptive weight grooming of the dynamic service flow in the optical network, the grooming paths can be selected for the services in a self-adaptive mode and load balance and efficient resource utilization are achieved.

Description

Technical field [0001] The invention belongs to the technical field of wired communication, and further relates to a method for grooming dynamic service flows in a wavelength division multiplexing (WDM) optical network. The invention can be applied to the routing module of the optical transmission and switching equipment with multi-wavelength transmission interface to perform routing and resource allocation for service requests. Background technique [0002] Wavelengths in WDM optical networks can be transmitted at relatively high rates, such as OC-48, OC-192, OC-768 (corresponding rates are 2.5Gb / s, 10Gb / s, 40Gb / s), but In practical applications, the communication rate of a single service is often much lower than the highest transmission rate of a wavelength, such as OC-1, OC-3, OC-12 (corresponding rates are 51.84Mb / s, 155.52Mb / s, 622.08Mb / s). Obviously, it is not realistic to provide a dedicated wavelength for each service, and the resource utilization rate is low. In orde...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/803H04J14/02
Inventor 黄江江周志强徐展琦王晓亚李杰
Owner XIDIAN UNIV
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