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We present a data center service localization architecture based on virtual resource migration in software defined elastic optical network. The overall feasibility and efficiency of the proposed architecture are experimentally verified on our testbed.
Network processing platform based on the multi-core CPU becomes more and more prevailing in nowadays. Buffer allocation/deallocation operations consume a large number of CPU cycles in packet I/O process. The problem becomes even worse in the scenario of packet forwarding, as buffer allocation/deallocation operations are more frequent than the host-based network applications. We thus propose a novel...
We propose a multi-stratum resilience (MSR) architecture for services with resources integrated graph (RIG) strategy in software defined data center interconnection based on IP over elastic optical networks. The feasibility and efficiency are verified on OpenFlow-based control plane.
We demonstrate the disaster resilience of electric power applications for software defined disaster recovery center networking (SD-DRCN) based on elastic optical network. The overall feasibility and performances of the architecture are verified in our study.
Due to short working hours and high action speed, the permanent magnetic actuator of high voltage circuit breaker would generate eddy current in the dynamic and static iron core when it was working. The eddy current would weaken magnetic field of the permanent magnet, which had a great impact on the characteristics of actuator. The coupling method was used to analyze the transient magnetic field of...
Two testbeds based on GMPLS and OpenFlow are built respectively to validate their performance over large scale optical networks. Blocking probability, wavelength utilization and lightpath setup time are shown on the topology with 1000 nodes.
We demonstrate for the first time enhanced software defined networking (eSDN) over elastic grid (eGrid) optical networks for data center service migration, the performance of which are first verified on our testbed with real prototypes.
Communication principle course plays an important role in communication and electronics specialties. Because abstract concepts and mathematical derivation, the students believe it difficult to learn. According to rich experiences in teaching and counseling on communication principle and postgraduate entrance examination, this paper starts from basic features of communication principle combined with...
A novel frequency selective surface (FSS) with ultra-wideband (UWB) polarization selective response is proposed, in which a unit cell consists of two metallic plane of a novel asymmetry pattern. Simulation results prove that the FSS can realize selectivity of waves of a certain polarization with the bandwidth more than 36.5%, and for different incident angles the bandwidth can be broader. Moreover,...
In this paper, a novel miniaturized band-reject frequency selective surface (FSS) is proposed, in which a unit cell consists of one metallic plane of a novel interleaving pattern and a dielectric substrate. Simulation results show that dimension of the basic structure is only 0.081λ×0.081λ, and the miniaturized performance can be further improved by changing widths of strips, distances between adjacent...
Unlike the traditional two-dimensional periodic arrays, a novel cubic frequency selective surface is proposed. For each unit, metal strips of a novel pattern are placed on dielectric substrates, and together form the six faces of a FSS cube, which is put in the middle of dielectric cubes. Simulation is conducted to analyze the characteristic of the FSS, and results are compared with traditional single-layer...
In this paper, a novel double-layer frequency selective surface (FSS) is proposed. Each layer consists of two semi-circle fractal elements put into a circular structure on a dielectric substrate. Simulation by CST MICROWAVE STUDIO® is conducted to testify the characteristics of the FSS. The results show that the novel structure has three resonant frequencies in the frequency band 0-30GHz with relatively...
A novel bandstop Frequency Selective Surface (FSS) using octagonal fractal structures is presented in this paper. By bending the edges inside and outside, the cell perimeter of the FSS can be effectively elongated, and therefore miniaturize the resonant frequency. And because of the symmetry configuration, the proposed FSS has achieved excellent stability for different polarizations and incident angles...
The ability of automatic web service composition to create a new composite web service is one of the key enabling features for the future for the semantic web. There are some successful methods for automatic web service composition, but the lack of standard, open, and scalable test environment makes the comparison and evaluation of these composition methods impossible. In this paper we propose a light...
Service descriptions via Web Services Description Language (WSDL) are necessary but not sufficient to service selection based on service trust. we need a means to collect nonfunctional information about services and use that information to assign dynamic trust levels to the service providers and implementations. In this paper, we briefly discuss the problem of service selection, given some correlation...
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