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Journals and Conferences
In this paper, we give an overview and classification of optical burst switching schemes and present burst reservation concepts. The performance of various basic reservation mechanisms proposed in literature is compared. Furthermore, a new analysis is introduced that allows to calculate the loss probabilities of a two-class system based on the reservation… (More)
In the design of next generation IP networks a major problem is the mismatch between extremely high optical transmission rates and relatively slower electronic processing. OBS applies separate realizations of the network data plane and control plane in the optical and electrical domain, respectively. Classification and proper assembly of small IP packets to… (More)
In this paper, we give an overview and classification of optical burst switching schemes and burst reservation concepts. We compare the performance of different burst reservation mechanisms for an OBS node that does not distinguish different classes. The one that performed best and allows service differentiation, called Just-Enough-Time, is then evaluated… (More)
The nite mass method, a new Lagrangian method for the numerical simulation of gas ows, is presented and analyzed. In contrast to the nite volume and the nite element method, the nite mass method is founded on a discretization of mass, not of space. Mass is subdivided into small mass packets of nite extension each of which is equipped with nitely many… (More)
In this paper different variations of the so-called “Tune-and-Select” (TAS) switching node for Optical Burst Switching (OBS) are investigated. Both signal degradation and burst losses limit the effective throughput of such optical burst switching nodes. These limitations are analysed for different nodes with four input/output fibres at different bit rates.… (More)
This paper presents and evaluates the new Weighted Integrated Routing scheme to solve the problem of dynamic routing and traffic grooming in meshed SDH/SONET-WDM multilayer networks. Its performance is compared to non-integrated schemes using a cost model.
The method of emulation is an attractive approach in order to evaluate the performance of communication networks. Compared to simulation, it is especially beneficial when real-world components, e.g., applications or protocols should be included. In this paper, we present the new emulation environment IKREmuLib, which allows for a seamless integration of… (More)
The project TransiNet focuses on new approaches and system concepts for IP over optical and radio networks. The goals and activities of the five participating research institutes are described. In addition, their technical approaches and first results are presented.
The purpose of this short scientific mission was to initiate a joint UST and UPC research work focusing on QoS management in OBS networks. Particularly, a framework for QoS management architecture have been discussed and proposed during the stay in Stuttgart. The main stress was put on definition of Classes of Quality (CoQ) for OBS networks and performance… (More)