Ulrich Killat

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Conventional routing management approaches, which are based on given and often " worst case " traffic matrices, are not sufficient anymore to deal with the increasing growth of the number of endpoints and diverse applications in IP networks. Traffic variations are becoming a more and more important issue, especially when making long-term network planning(More)
—Network Virtualization is claimed to be a key component of the Future Internet, providing the dynamic support of different networks with different paradigms and mechanisms in the same physical infrastructure. A major challenge in the dynamic provision of virtual networks is the efficient embedding of virtual resources into physical ones. Since this problem(More)
This paper deals with the statistical characterization of a stochastic process which is a product of a Rice process and a lognormal process. Thereby, we consider the more general case where the two Gaussian noise processes describing the Rice process are correlated. The resulting process will be named as extended Suzuki process, which can be used as(More)
— The first Peer-to-Peer (P2P) networks were based mainly on the altruistic behaviour of the peers. Although newer implementations incorporate some kind of incentive mechanism to award sharing peers, no P2P network assures any quality of service. This paper is meant as a first step towards the development of P2P networks with quality of service. We propose(More)