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Method for simulating WDM optical network

A network simulation and wavelength division multiplexing technology, applied in the field of analog systems, can solve problems such as difficult to support online monitoring, expensive optical instruments, etc., and achieve the effect of improving convenience and low cost

Inactive Publication Date: 2002-09-18
BEIJING UNIV OF POSTS & TELECOMM +1
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  • Abstract
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Problems solved by technology

On the other hand, online monitoring of optical signals has always been a problem, and optical instruments are expensive, and it is difficult to support online monitoring

Method used

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  • Method for simulating WDM optical network
  • Method for simulating WDM optical network
  • Method for simulating WDM optical network

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Embodiment Construction

[0033] The present invention is described in detail below in conjunction with accompanying drawing:

[0034] Optical network information structure model defined by the present invention

[0035] The information model structure is the foundation of the WDM optical network simulation method structure and the framework of the simulation system structure. It is directly related to the system's realizability, computing efficiency, upgradeability and capacity expansion.

[0036] In the wavelength division multiplexing (WDM) optical transmission network, due to the existence of devices such as isolators, the data flow flowing through each device in the network can be regarded as a one-way flow, that is, the data input and output of the device at each moment is one way. In this way, the device model in the WDM optical transport network can be described as figure 1 The structure shown, where MII (Model Information Interface) represents the model information interface. A represents ...

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Abstract

The invention discloses a method for simulating optical network of wave division multiplex (WDM) by computer. The computer executes following steps. The computer provides at least one main interface that includes a section for drawing layout of optical network, a toolbar section. The toolbar section provides selectable operations; system planning, performance simulation, simulaing algorithm of allocating route or wave length. Said function of system planning is that based on user's planning target, the system planning generates a topological graph of optical network on the said drawing section. The optical network on the drawing section is carried out a simulation by function of performance simulating. Based on physical toplogy and logical topology, the algorithm of allocating route or wavelength selects suitable route and allocates optimized wavelength and evaluates the algorithm for dynamic business.

Description

technical field [0001] The invention relates to a simulation system for simulating an optical network, in particular to a wavelength division multiplexing optical network simulation method. Background of the invention [0002] With the rapid increase of communication services, wavelength division multiplexing (WDM) optical transport network is playing an increasingly important role. At the same time, research on the performance of network components and network performance The research of nonlinear effects, wavelength allocation and routing algorithms, network planning and design and networking schemes, and the evolution of signals during transmission have all become the focus of research. However, there are limiting factors such as fixedness, high cost, inflexibility, and low efficiency in the hardware network platform. As a result, more and more studies on WDM optical transmission networks are based on simulations on software platforms. Software simulation plays an increa...

Claims

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Application Information

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IPC IPC(8): G06F9/455G06F17/00H04J14/02
Inventor 顾畹仪张杰程晓飞马恒
Owner BEIJING UNIV OF POSTS & TELECOMM
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