An ad hoc network is a collection of wireless mobile nodes dynamically forming a temporary network without the use of any preexisting network infrastructure or centralized administration. Routing protocols used in ad hoc networks must automatically adjust to environments that can vary between the extremes of high mobility with low bandwidth, and low mobility with high bandwidth. This thesis arg...

An important challenge in Wireless Sensor Networks used in industrial applications is its reliability with respect to guaranteed delivery while maintaining minimum overhead. Although the traditional ad hoc routing protocols are designed for obtaining the maximum throughput, they cannot guarantee reliability. For process control applications, every information conveyed by every sensor is importa...

MANETs may be an assortment of wireless mobile nodes forming a network while not victimization any existing infrastructure. Varied issues area unit principally thanks to the shortage of resources of those networks. The solutions for typical networks area unit sometimes not decent to supply economical adhoc operations. The wireless nature of communication and lack of security infrastructure rais...

Mobile ad-hoc networking works properly only if the participating nodes cooperate in routing and forwarding. However, it may be advantageous for individual nodes not to cooperate. We propose a protocol, called CONFIDANT, for making misbehavior unattractive; it is based on selective altruism and utilitarianism. It aims at detecting and isolating misbehaving nodes, thus making it unattractive to ...

Formal verification is one of the best methods for evaluating the systems. In this paper we used SMV model checker to evaluate the performance of DSR protocol in wireless networks. Since the modeling of whole DSR network in SMV is not possible, we used a Case Study example. In this example, node failure and link break conditions are investigated. By using SMV model checker, we have been able to...

A Mobile Ad-Hoc Network (MANET) is selfconfiguring network of mobile nodes connected by wireless links to form an arbitrary topology without the use of existing infrastructure. This paper does the comparative investigations on the performance of routing protocols Dynamic Source Routing (DSR), Ad-hoc On demand distance vector (AODV) and Destination-Sequenced Distance-Vector (DSDV) for wireless a...

The explosive growth in the use of real-time multimedia applications in mobile devices requires quality of service (QoS) support for effective communication. Network congestion is the main reason for packet loss, longer delay and jitter in streaming multimedia applications. Most of the present routing protocols are not designed to adapt congestion. In this paper, the original DSR protocol is mo...

The modern and innovative medical applications based on wireless network are being developed in the commercial sectors as well as in research. The emerging wireless networks are rapidly becoming a fundamental part of medical solutions due to increasing accessibility for healthcare professionals/patients reducing healthcare costs. Discovering the routes among hosts that are energy efficient with...

Wireless sensor networks (WSNs) are characterized by scarcity of resources and highly unreliable wireless channels, whereby minimizing energy-consumption is a key issue in design of communication protocols for the battery powered sensor nodes. The work in this paper addresses the problem of finding energy-efficient routes for delivery of packets through multihop communication with modification ...

The main method for evaluating the performance of MANETs is simulation. This paper is subjected to the Dynamic Source Routing protocol (DSR) and evaluated its performance in three different placement environments namely Random, Grid and Uniform. We investigated the QOS metrics namely Average jitter, Average end-to-end delay, Packet delivery ratio and Throughput by varying network size. From the...