Research On The Key Technologies Of Service Addressing And Routing In Service-Centric Network

With the continuous expansion of the network terminal system's business scale and the mass emergence of new services,it is more and more difficult for current network architectures to load the existing large-scale data transmission business models.In addition,the traditional static service delivery way has disadvantages of coarse grain and strictly hierarchical protocol stack,which was failed to provide customized services to meet the mass and differentiated service requirements.Driven by this background,it already become an inevitable trend to design service-centric network architectures possessing the characteristics of dynamic,redundant and heterogeneous which must be service-oriented and application-oriented for the development of future network,as well as to provide best,ubiquitous and flexible network services for applications and human society.A reconfigurable network service-centric model called Re-SCNet was proposed based on the national 973 project “Research on the Architecture of the Reconfigurable Fundamental Information Communication Network”.this paper studies the key technologies of service addressing and routing in service-centric network inspired by the idea of reconfigurable network's function decomposition and combination.In summary,this paper's main research results are the following:1.Based on Re-SCNet model,aiming at how to derivate service chain through combine atomic capacities dynamicly in a single network node to meet service requirements,a dynamic programming algorithm was put forward.This paper models this problem as a mixed integer geometric programming problem,then design a dynamic programming algorithm to gain an optimal construction strategy then customize an optimal service chain.Simulation results show that Re-SCNet model can balance nodes' load effectively compared with traditional network,DP algorithm can achieve a trade-off between the optimal solution and time-consuming.2.Aiming at the analysis between service identifier(SID)and the location of service instance,a new service addressing mechanism based on locality-aware DHT is proposed,and construct a locality-aware hierarchical mapping system called LAHM-Chord based on the markoff decision algorithm to complete service addressing.Simulation results demonstrate that LAHM-Chord mapping system has a better performance to provide more fast mapping resolution serviceis,besides the average mapping resolution latency and average one-hop latency are respectively reduced by 7.83% and 12.46%.3.After the completion of service addressing,aiming at how to build an optimal service path with multiple-objective constraints(OSPP-MoC)between certain network nodes in the Re-SCNet model,this paper proposes a service routing matrix algorithm(SeMR)to solve OSPP-MoC problem in service routing.Simulation results demonstrate that SeMR has a better performance in network resource usage(Mbps),end-to-end connection delay,connection drop rate,link resource consumption and other aspects.4.Aiming at the validation requirements of the Re-SCNet model,this paper relying on the Re-SCNet service addressing and routing innovation platform redesigns this platform's control plane and data plane.To support a variety of services coexist and run different routing protocols,we utilize the open programmable hardware platform NetFPGA-10 G,routing control platform Quagga and virtualization technology OpenVZ as the core to complete the design of control plane and data plane,respectively.Simulation results demonstrate that Re-SCNet model has a better performance in service path customization,anti-interference and the transmission bandwidth increased by 19% on average.