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...

Ad hoc networks are gaining increasing popularity in recent years because of their ease of deployment. No wired base station or infrastructure is supported, and each host communicates one another via packet radios. In ad hoc networks, routing protocols are challenged with establishing and maintaining multihop routes in the face of mobility, bandwidth limitation and power constraints. In this pa...

Ad hoc networks are characterized by multi-hop wireless connectivity, frequently changing network topology and the need for efficient dynamic routing protocols plays an important role. We compare the performance of two prominent on-demand routing protocols for mobile ad hoc networks: Dynamic Source Routing (DSR), Ad Hoc Ondemand distance Vector Routing (AODV). A detailed simulation model with M...

Ad hoc networks are characterized by multihop wireless connectivity, frequently changing network topology and the need for efficient dynamic routing protocols plays an important role. We compare the performance of two prominent on-demand routing protocols for mobile ad hoc networks: Dynamic Source Routing (DSR), Ad Hoc On-demand distance Vector Routing (AODV). A detailed simulation model with M...

A temporary collection of wireless mobile nodes in decentralized manner is known as Mobile Ad hoc Network (MANET). In a hostile environment of MANET, security is the primary concern to achieve protected communication between mobile nodes. A number of nontrivial challenges to security designs mandate the demand of building multi-fence security solutions that achieve both extended protection and ...

In this paper we propose a method to enhance the life time as well as improve the performance of the mobile ad hoc networks (MANET). Since MANET consists of devices that run on batteries, having limited amount of energy and due to the self-configuring and dynamic change of topology, all operations are performed by the node itself. More ever if any new technology and advancement are introduced i...

Routing protocols for Mobile Ad Hoc Networks (MANETs) have been extensively studied for more than fifteen years. Position-based routing protocols route packets towards the destination using greedy forwarding (i.e., an intermediate node forwards packets to a neighbor that is closer to the destination than itself). Different position-based protocols use different strategies to pick the neighbor t...

Mobile Ad-Hoc Networks (MANETs) are wireless networks consisting of a collection of untethered nodes with no fixed infrastructure. An important design criterion for routing protocols in ad hoc networks is power consumption reduction. We describe an energy-efficient mechanism that can be used by a generic MANET routing protocol to prevent nodes from a sharp drop of battery power. We apply the me...

An ad hoc network is a collection of wireless mobile hosts forming a temporary network without the aid of any established infrastructure or centralized administration. Because of the limited range of each host's wireless transmission, to communicate with hosts outside its transmission range, a host needs to enlist the aid of its nearby hosts in forwarding packets to the destination. A routing p...

As wireless networks are widely deployed and become prevalent, TCP performance over mobile ad hoc networks attracts more attention. The earlier studies on TCP in wireless networks have shown that it performs poorly in ad hoc networks. They tackled the problem by modifying TCP itself or MAC protocols. In this paper, we present a novel routing protocol that enhances the end-to-end TCP performance...