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For large scale multi-domain elastic optical networks, we propose a combination of distributed and centralized control architecture (DC-CA) based on stateful hierarchical PCE. Experiment results are presented from DC-CA testbed and automated provisioning and recovery time of multi-fault are reported.
We propose an AWGR and SOA based scalable optical packet switch architecture with modular structure and highly distributed control scheme for data center networks. Numerical results show this architecture can achieve high throughput with low blocking probability and latency.
Considering numerous of credible problems takes place in the distributed, loosely coupled, flexible and dynamic Web service environment because many factors, such as service provider, service user and service quality and so on, is uncertain, which all these problems exited lead the normal running of system to face serious threats. Therefore, this article, through processing the user feedback information...
We propose a scalable framework for triple M routing in dynamic optical networks and first experimentally demonstrates a DREAM-based optical transport network with 1000 control plane nodes and multi-terabit per second ODUk electrical cross-connects.
Different routing schemes for multi-layer and multidomain optical networks are analyzed, and a novel routing architecture is described in the paper. Cooperation models between dual routing engine in large-scale multi-layer and multidomain optical networks are researched, and an optimal model is proposed and simulated. Then the scalability of dual routing engine architecture is validated on DRE testbed.
Architecture of DREAMSCAPE is introduced into optical networks combined with ASON/GMPLS, and a selection scheme is proposed for group engine (GE) and unit engine (UE). Then the cooperation relationship of modules in GE and the verification platform are described.
Proposed in this paper is a dual routing engine-based routing architecture for multi-domain multi-layer networks. An interpreter-based modeling of the group engine is discussed and a preliminary routing strategy is designed with consideration of scalability and flexibility.
Recently, extensive research and application on contrast enhancement of radiographs based on multi-scale decomposition of the images have validated its higher performance than regular techniques. However, to some extent, conventional multi-scale methods suffered from the introduction of visible artifacts. In this work, we present an algorithm for nonlinear chest radiograph contrast enhancement algorithm...
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