Design And Simulated Implementation Of Dynamic Multi-Granularity Traffic Grooming Based On Traffic Partition In IP Over WDM Optical Networks

IP data, voice and new business growth, put forward to the Internet to huge bandwidth needs.Although wavelength with (WDM) technology can meet network capacity, distance, light transmission quality most requirements, But the resources utilization rate is low, operation and maintenance cost is higher. Therefore, in order to achieve higher resource utilization and lower cost for network infrastructure, it is necessary to efficiently multiplex a set of low-rate traffic streams into high-capacity lightpaths, and this related techonoly is called traffic grooming. At the same time, as the number of wavelengths in each fiber increasing, the number of ports and the cost of ordinary OXC increases rapidly. How to plan as a whole network, Will different rate, different types of low speed packed into high speed data flow business, as a whole transmission, The minimum consumption in light of the cross connection equipment port number next meet user requirements, realize effective grooming.In view of the above questions,_this thesis considers efficiently integrating the traditional traffic grooming technology with the WS technology to dynamically provide high-speed channels or end-to-end connections for sub-wavelength level, wavelength level and waveband level demands. This integrated technology is also called multi-granularity traffic grooming. This thesis designs a multi-granularity traffic grooming mechanisms, in which the first mechanism is called multi-Granularity traffic grooming in Heterogeneous waveband switching optical networks (MGH). Based on MGH mechanism, this thesis designs four heuristic algorithms including MGH-WIAG, MGH-BIAG, MGH-IGAG, and IMGH-IGAG.In order to check the feasibility and the validity of the designed heuristic algorithms, a simulation environment is developed with VC++6.0. Simulation results show that MG-IGAG algorithm not only performs effective traffic grooming and waveband switching together in multi-granularity optical networks but also solves the traffic-diversity problems very well, especially for port savings, compared to previous WS algorithms and multi-granularity grooming algorithms followed by integrated grooming policy (IGP).