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In this paper, we investigate the routing problem for dynamic traffic demands providing differentiated types of service across the network. Two classes of traffic are considered: QoS traffic and best-effort traffic. We propose a comprehensive offline/online routing solution that enables service providers to satisfy the demands of customer traffic flows while respecting the traffic priority. As a first...
The multi protocol label switching architecture (MPLS) adds a connection oriented layer on top of IP networks. In MPLS enabled networks, label switched paths (LSPs) are established and released using a variety of signaling protocols and data packets are forwarded over LSPs using the label swapping paradigm. Load sharing has been identified as an attractive mechanism to perform traffic engineering...
The following topics are dealt with: sensor network; next-generation wireless LAN; wireless multicast; data routing and encoding strategies; energy-efficient networking; multihop and mesh network; MAC enhancements; multimedia traffic and wireless scheduling; higher-layer protocol; QoS and performance of next-generation cellular network; link models and optimization; 802.11 enhancements; testbed and...
This article focuses on the control plan of IP over WDM networks. Analytical and measurement studies have shown that self-similar traffic can have detrimental impact on network performance in terms of queuing delay and packet loss ratio. Nevertheless, the ubiquity of scale-invariant burstiness observed across diverse network contexts can be exploited to make more efficient resource-control decisions...
With the current growth rate that networks are witnessing, it is essential to have routing protocols that can adjust to scale with this growth. OSPF (open shortest path first), the most widely used interior gateway protocol, needs to be adaptive enough to accommodate rapid changes to the complex nature of the Internet and other ISP networks. We present extensions to OSPF and OSPF-TE (OSPF with traffic...
In this paper we study the optimality of an index policy for a bandwidth allocation problem, where a single server is allocated among N queues in a slotted system based on the queue backlog information. Due to the physical nature of the system this information is delayed, in that when the allocation decision is made, the server only has the backlog information from an earlier time. This results in...
Creation of multiservice CATV networks is regarded as an integration of different services within the limits of a network. The integration, in its turn, results in necessity of using new approaches to networks calculation in order to provide the required quality for each service. Presented in this paper is a method for the calculation of a multiservice CATV network of minimal cost, taking into account...
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