Encoded video streams present numerous problems in bandwidth allocation, multi-plexing and admission control as a result of their Variable Bit Rate(VBR) characteristics. In particular, since video signals show a large range of variability, peak rate allocation results in very low bandwidth utilization. However, other allocation schemes tend to cause cell loss, delay and delay jitter which make ...

Several new protocols such as RBUDP, UserLevel UDP, Tsunami, and SABUL, have been proposed as alternatives to TCP for high speed data transfer. The purpose of this paper is to analyze the effects of SABUL congestion control algorithm and its parameters on SABUL bandwidth utilization by using extensive simulations. The simulation results show that SABUL congestion control parameters have a direc...

In our days, efficient management of the available network resources becomes a critical issue, both from a functional point of view (so that users can be provided with the bandwidth they need), and an economical point of view (so that carriers can satisfactorily and efficiently serve as many customers as possible and at the same time increase their revenue). In this paper we consider a bandwidt...

Voice over Internet protocol (VoIP) is one of the most important applications for the IEEE 802.11 wireless local area networks (WLANs). For network planners who are deploying VoIP over WLANs, one of the important issues is the VoIP capacity. VoIP bandwidth consumption over a WAN is one of the most important factors to consider when building a VoIP infrastructure. Failure to account for VoIP ban...

the ability to discover services in mobile ad hoc network (manet) is a major prerequisite. cluster basedcross layer intelligent service discovery for manet (cbisd) is cluster based architecture, caching ofsemantic details of services and intelligent forwarding using network layer mechanisms. the cluster basedarchitecture using semantic knowledge provides scalability and accuracy. also, the mini...

In WiMAX networks managing the uplink access is an important issue as it deals not only with the available bandwidth but also with the QoS requirements of different traffic classes. This paper proposes a new scheme for bandwidth allocation in WiMAX systems, named WiMAX Dual Cognitive Radio Scheme (WDCRS). The proposed scheme uses cognitive radio in order to attain high bandwidth utilization and...

The use of ABR service on Internet backbones has been recently proposed as a means to improve statistical multiplexing and to recover the bandwidth left over by VBR traac. While this approach permits far better utilization of ATM resources than it is possible otherwise with the CBR service, full link utilization is seldom achieved. In this paper we address the reasons why the ABR ow control can...

This paper addresses the use of two latency hiding techniques, prefetching and weak consistency, for large-scale shared memory multiprocessors with compiler-controlled cache coherence management and the interaction of latency hiding techniques and network bandwidth. The performance eeect of latency hiding is evaluated and compared varying the network channel bandwidth. The interaction of reads,...