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Integrated service leading method for WDM optical network

An integrated service and wavelength division multiplexing technology, applied in the direction of wavelength division multiplexing system, data exchange network, digital transmission system, etc., can solve the problems that the business grooming algorithm cannot be put into practical application, and cannot be used for dynamic business analysis.

Inactive Publication Date: 2008-01-09
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

The other most important thing is that in this method of dealing with a single problem separately, it is necessary to predict the arrival status of the entire network business and optimize the configuration for all business volumes, that is, static business analysis, which cannot be applied to the requirements of dynamic business analysis. Therefore, the current business grooming algorithm in the existing WDM mesh network cannot really be put into practical application

Method used

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  • Integrated service leading method for WDM optical network
  • Integrated service leading method for WDM optical network
  • Integrated service leading method for WDM optical network

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Embodiment Construction

[0083] The integrated service grooming algorithm can be used to deal with dynamic service arrival requests in wavelength division multiplexing WDM mesh network. We take a simple network (Figure 3) as an example to illustrate the specific implementation method of the algorithm. For simplicity, we assume that all nodes in the network do not have wavelength converters. Each network node is equipped with an optical cross-connector OXC, and each optical cross-connector OXC contains two optical transceivers, that is, two optical transmitters and two optical receivers (the italic numbers on the side of the virtual topology layer represent The number of optical transceivers currently not being used in this node), each link is composed of a pair of unidirectional optical fibers with opposite directions, and the number of available wavelengths in each optical fiber is set to 2. Figure 4 shows the initial state of the network corresponding to the grooming graph model. Since no light pat...

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Abstract

The invention provides a synthesis persuasion business method WDM OTN. Wherein, building a persuasion chart model combined with virtual topological design, rout and wavelength allocation problem, calculating on the chart to find out proper persuasion path. For business request, using built optical link for persuasion. This invention uses dynamic regulation link weight to regulate dynamically whole network link weight at any moment to balance load, and saves optical transceiver resources to reduce cost.

Description

technical field [0001] The invention belongs to the field of business grooming in communication systems, and in particular relates to the technology of dynamic business grooming in WDM mesh optical network. technical background [0002] With the explosive growth of network traffic and the emergence of high-performance WDM optical network equipment (such as optical cross-connector OXC, optical add-drop multiplexer OADM, see Figure 2), wavelength division multiplexing technology has become the backbone network of the next generation. Core technologies. [0003] Because each wavelength in the WDM network can provide up to gigabit (such as OC-48, OC-192, OC-768) transmission capacity. However, in practical applications, the communication rate of many services is often lower than the passable rate on one wavelength, such as OC-1, OC-3, OC-12 (51.84Mb / s, 155.52Mb / s, 622.08Mb / s). Obviously, providing a dedicated wavelength for each low-speed service has low resource utilization ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/24H04J14/02
Inventor 虞红芳温海波曹劲
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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