Currently, cognitive radio solves the problem of spectral congestion by load sharing wireless traffic across different licensed spectrum bands. However, it is thought that a more powerful approach would be to load share the traffic across both fixed and wireless access networks. It is thought that such an approach will be able to prevent spectral congestion for the foreseeable future for a sign...

In this paper we study two major sources of packets delay in the GSM/GPRS wireless network, at Base Station and at GGSN node. Fisrt, for the former one, we present an analytical model to study the performance of channel sharing schemes to support both circuit switched voice and packet data services in a GSM/GPRS network. We study three channel sharing schemes: 1) fixed sharing in which cell cha...

Networks of workstations become more and more appropriate for parallel applications, as modern network technology enables high quality communication between powerful workstations. In this perspective, load balancing software must be extremely exible as the set of available nodes for a particular distributed memory application may change at run time. XENOOPS is an advanced environment for parall...

In a cluster system with dynamic load sharing support, a job submission or migration to a workstation is determined by the availability of CPU and memory resources of the workstation at the time [3]. In such a system, a small number of running jobs with unexpectedly large memory allocation requirements may significantly increase the queuing delay times of the rest of jobs with normal memory req...

This paper presents the design and evaluation of a decentralized load sharing algorithm for networks of workstations, RADIO. With respect to general distributed computing environments, networks of workstations have some peculiarities. First, the global computing power is most of the time much underutilized. Second, users of workstations need occasionally a peek of computing power. Third, workst...

The new Stream Control Transmission Protocol (SCTP) was originally standardised for the transport of signaling messages – originating from the Common Channel Signaling System No.7 (SS7) – over IP based networks. Nonetheless, SCTP is a general purpose IP-based reliable transport protocol which is connection oriented and offers message based data transfer. It supports multiple independent message...

This paper provides a novel hierarchical control for VSI-based microgrids. The advantage of the provided control scheme is to maintain the frequency and voltage stability and load sharing against large-signal disturbances. A hierarchical control, consisting of three levels, is described. A new control loop based on PI controller, is presented. The new control loop has a great impact on increasi...

A compute farm is a pool of clustered workstations to provide high per$ormance computing services for CPU-intensive, memory-intensive, and I/O active jobs in a batch mode. Existing load sharing schemes with memory considerations assume jobs’ memory demand sizes are known in advance or predictable based on users’ hints. This assumption can greatly simplify the designs and implementations of load...

This paper presents how and why to unify load sharing and fault tolerance facilities. A realization of a fault tolerant load sharing facility, GATOSTAR, is presented and discussed. It is based on the integration of two applications developed on top of Unix: GATOS and STAR. GATOS is a load sharing manager which automatically distributes parallel applications among heterogeneous hosts according t...

Nowadays, the Internet plays an important role in peoples' daily lives as well as their work, thus its resiliency is vital within its ecosystem. However, the uncoordinated patterns of inter-domain routing as well as the significant growth of the network and the traffic in Internet challenge the resiliency of Internet. Therefore, it is becoming urgent to find solutions to mitigate those issues. ...