Internet protocol (IP) over wavelength division multiplexing (WDM) network energy-aware routing method based on multipriority business

Abstract

The invention relates to an internet protocol (IP) over wavelength division multiplexing (WDM) network energy-aware routing method based on multipriority business. The IP over WDM network energy-aware routing method is used for achieving energy saving of an optical network under different QoS constraint conditions of dynamic business. According to the method, the business is divided into different grades. For low-priority business, a Dijkstra algorithm is improved to achieve energy saving by combining an optical bypass and a business volume guidance technology and enabling energy consumption to serve as link weight; and for high-priority business, routing is performed with an optimal path forecasting function serving as a routing standard, a flow partition mechanism and a link weight dynamic adjustment mechanism are integrated while network energy consumption is reduced so as to guarantee the requirements of the business for time delay, packet loss rate and blocking rate. Compared with the prior art, different routing methods can be designed according to priority level of the business, energy-saving efficiency of the network is improved on the premises that a certain service quality is guaranteed, and energy saving of the multipriority business in the IP over WDM network is achieved comprehensively.

Description

technical field [0001] The invention relates to the field of network technology, in particular to an IP over WDM network energy-aware routing method based on multi-priority services. Background technique [0002] In recent years, optical networks have developed rapidly driven by high-speed, large-bandwidth communication requirements. With the expansion of network scale and continuous updating of network equipment, its energy consumption increases sharply. However, excessive resource supply and redundant design in the network lead to low equipment efficiency and serious energy waste, which limits the further improvement of network system performance. IEEE GLOBECOM 2009, OFC / NFOEC 2010, ONDM 2011, EU Green Optical Network Project Group and other international academic conferences and regional organizations specifically listed this topic. "Green Optical Network" has become a new hotspot in optical communication network research. [0003] In the current optical network, the IP...

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Problems solved by technology

[0010] The above optical network energy-saving solutions are all based on the optimization goal of minimum network energy consumption, and are proposed for a single service flow without distinguishing services

In fact, due to the diversification of IP bearer business types, it is difficult for a single energy-saving solution to meet the QoS requirements of different services

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