—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)
— In resource marking theory, users adapt their rates according to their utility functions and congestion signals from the network. Using a special type of utility functions, this will lead to a proportionally fair rate allocation among the users. In this paper, we examine the ability of two proposed resource marking implementations to yield a… (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)
— In this article we present a new class of traffic shapers that make up the shaping decision whether to delay or pass a packet by comparing a measured distribution specifying the arrival stream to a given reference distribution. Rather than simply comparing average values this shaper emits data streams with property 'better than reference distribution' by… (More)
In this paper we present a new mobility model for mobile network simulations and evaluate user distributions in a real topology using different parameters.
The Internet traffic consists of an increasing amount of soft real-time flows, which can tolerate very small delay variation and losses. Allowing probabilistic Quality of Service (QoS) violation for these flows can greatly help to improve resource utilization. However, this improvement depends on the statistical properties of competing independent flows and… (More)