Oblivious online routing (OOR) algorithms are suitable when applications only have local information available to make routing decisions. This paper presents two new OOR algorithms for Delaunay triangulations: the Ellipse Routing algorithm and the Arc Routing algorithm. Both of their names come from the shapes of their searching areas for the next-hop neighbor. This paper also evaluates and com...

In this paper, we present GeoCast, a geographical location aware overlay network framework designed for providing efficient group communication services. GeoCast can be seen as an extension to the CAN network in the term of topology management and routing protocol. Geocast design has three important properties that attractive to group communication applications. First, it uses geographical mapp...

Distance-hereditary graphs (sensu Howorka) are connected graphs in which all induced paths are isometric. Examples of such graphs are provided by complete multipartite graphs and ptolemaic graphs. Every finite distance-hereditary graph is obtained from K, by iterating the following two operations: adding pendant vertices and splitting vertices. Moreover, distance-hereditary graphs are character...

Mobile agents have the potential to offer benefits, as they are able either independently or cooperatively move throughout networks and collect/aggregate sensory data samples. They programmed autonomously visit stations through optimal paths, which established according application requirements. However, mobile agent routing protocols still suffer heavy computation/communication overheads, lack...

noise interference with employee’s speech communication is considered as one of the noise pollution effect in any workplace. these interferences can disrupt communication of necessary and vital data between individuals. and as a result can cause anything from a slight irritant to a serious safety hazard involving accident or even fatality. this study was focused on the analysis of the human err...

Now-a-days the requirements of wireless communication are to have high voice quality, high data rates, multimedia features, lightweight communication devices etc. But the wireless communication channel suffers from much impairment .One of them is fading which is due to the effect of multiple propagation paths, and the rapid movement of mobile communication devices. In a typical wireless communi...

This paper addresses the problem of constructing optimal virtual topologies for multicast communication in optical networks employing wavelength-division multiplexing (WDM). For concreteness, we use the average hop distance as the metric of optimality. WDM networks supporting multicast communication typically employ multicast-capable switches which permit a path entering a switch on an incoming...

Opto-electronic reconfigurable interconnection networks are limited by significant control latency when used in large multiprocessor systems. This latency is the time required to analyze the current traffic and reconfigure the network to establish the required paths. The goal of latency hiding is to minimize the effect of this control overhead. In this paper, we introduce a technique that perfo...