Reseaech On Seamless Communication In Hererogeneous Multidimensional Optical Nerwork

With the development of optical transmission network for many years,various transmission technologies are constantly emerging.Although technology continues to improve,it is hard to keep up with the upgrading of infrastructure.So far,although there are more flexible form of network and more efficient transmission technology of air division multiplexing,but our backbone network is still based on the traditional WDM transmission network.It can be predicted that with the technology iteration and infrastructure update,the traditional transmission technology will gradually be replaced by the new transmission technology.But there will be a transition.In this transition process,the optical transmission network we actually use must be a heterogeneous network composed of a variety of network technology architectures.In today’s optical transmission network,we have developed multiple dimensional multiplexing technologies in time,frequency and space domains to cope with the huge transmission pressure.However,the heterogeneous and multi-dimensional network situation also causes rigid and complex problems to the utilization and management of optical network resources.Therefore,it is of great significance to study the seamless communication scheme of heterogeneous multidimensional optical network to solve the problems such as the complicated end-to-end communication scheduling and the incompatibility of traditional schemes under the heterogeneous network situation.In the network with different technical architecture,its resource forms and constraints are not the same.In order to get rid of the complex situation of resource scheduling caused by various network technologies in heterogeneous network,optical network virtualization technology has been widely studied.Network virtualization technology can effectively shield the complex physical implementation mechanism in some heterogeneous networks,which abstracts the resources in the physical network,further implements scheduling management on this basis,and improves the flexibility of the network.In this paper,the end-to-end seamless communication in heterogeneous multidimensional optical networks is studied by using optical network virtualization technology.With network virtualization key technology as the foundation for the study,studies the heterogeneous resource model and multi-dimensional optical network transmission characteristics of modeling problem,multi-dimensional heterogeneous network virtualization,mapping and heterogeneous multi-dimensional optical network routing and resource assignment problem,was proposed based on multidimensional optical network virtualization of heterogeneous end-to-end seamless communication solution,and hairdo heterogeneous multi-dimensional optical network resource allocation schemes and implements a support heterogeneous multidimensional network simulation platform of the system.Faced with the complex resource constraints of the network after the hybrid networking of WDM,EON and SDM-EON technologies,this paper designs a new communication scheme for the realization of end-to-end seamless communication.Firstly,a mathematic model of virtualization is established,and then the virtualization schemes of nodes and links are proposed respectively according to the mathematic model.This scheme not only can flexibly aggregate resources,but also can avoid some crosstalk problems caused by space division multiplexing by means of serial key groups.At the same time,the resource allocation problem in end-to-end communication in heterogeneous multidimensional optical network is also studied.Based on the virtualization scheme proposed in this paper,the problem of resource allocation in heterogeneous multidimensional optical network is transformed into the problem of resource allocation in virtual network,and a concurrent scheme is proposed to improve the performance of the current common RSA algorithm.Based on the security problem,activity problem and performance problem of concurrency,the characteristics of parallel network model are summarized,and a scheme through network plane is proposed.A virtual network structure that can be used for concurrency is realized,and a scheme of plane division of wavelength resources is designed.Finally,the simulation results show that the algorithm is scientific and effective.’The simulation results show that this algorithm can inherit the characteristics of its matching RS A algorithm,and improve the performance of the original algorithm by doubling the number of threads.In a multi-threaded environment,the algorithm can make full use of the computing resources of the computer,shorten the response time and improve the throughput of the system.Finally,a simulation platform supporting heterogeneous multidimensional optical network is designed and implemented.Compared with the current simulation platform,this simulation platform has several characteristics,including supporting isomerization network,supporting big data visualization,supporting high-precision map and supporting cross-platform.The platform has designed a new simulation platform architecture and uses cross-platform design ideas,supporting the current three mainstream operating systems.The simulation program and topology construction are separated by modularization design,which makes the platform have good portability.