A mobile infostation network stipulates all transmissions to occur when nodes are in proximity. In this paper, the effect of transmit range on the capacity of four transmission strategies is studied. We show that a stipulated transmit range improves the capacity relative to the reference strategy with an unconstrained transmit range. This indicates an optimal trade-off exists between spatial tr...

This work presents a middleware architecture for distributed applications communicating solely over a mobile multihop ad-hoc network. The design of the platform is based on the marketplace pattern where communication among negotiating components of an application concentrates on bounded geographical areas, called marketplaces. The marketplace pattern allows to develop resource saving and selfor...

This paper investigates the connectivity of wireless multihop networks with uniformly randomly distributed nodes. We analyze the required transmission range that creates, for a given node density, an almost surely k–connected topology. Besides scenarios in which each node has the same range, we discuss inhomogeneous range assignments. Our results are of practical value for the task of setting p...

This paper describes a simulation based performance analysis of DSR on the basis of comparison between 802.11 and CSMA protocols. Dynamic Source Routing protocol (DSR) provides simple and efficient routing for multihop ad-hoc network of mobile nodes. It utilises a specially designed framework which builds on the Global Mobile Information System Simulator (GloMoSim). Some optimizations of DSR ha...

This paper concerns the connectivity of multihop Bluetooth (BT) network. The connectivity properties of the BT network depend mainly in the device discovery procedure. By using a single frequency train instead of double trains in alternate inquiry (inquiry scan) periods, simulation results show that nodes can discover most of their neighbors in shorter time and hence the BT is connected with hi...

Two-ray ground reflection model has been widely used as the propagation model to investigate the performance of an ad hoc network. But two-ray model is too simple to represent a real world network. A more realistic model namely shadowing propagation model has been used in this investigation. Under shadowing propagation model, a mobile node may receive a packet at a signal level that is below a ...

Wireless mesh networks are a recent architecture for multihop wireless networks. Also, standards for realizing mesh networks are being actively developed, especially in the IEEE working groups. In contrast with mobile ad hoc networks, mesh networks consist of static nodes communicating with each other over wireless links. The static nodes are essentially wireless routers. Such networks can be u...