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In recent years, the wireless networks are becoming popular because of new wireless devices such as mobile PCs and Smart phones, which have low cost and high performance. As a result, a lot of test beds for MANETs have been proposed and implemented. In this work, we implement a MANET test bed and present two experimental models to evaluate its performance. As routing protocol, we use Optimized Link...
MANETs are temporary networks, that spend less time to be deployed and less resources to keep up and running. MANETs can be implemented in disaster recovery sites, university campuses, military campaigns and so on. MANET nodes cooperate in an autonomous way by forwarding packets to each-other. Considering mobility of the terminals, the routes change dynamically so routing algorithms are very important...
There has been a growing interest in designing relay deployment strategies for cooperative wireless networks. In this paper, we focus on multi-hop, cluster-based, linear networks. Several relay selection strategies are applied to achieve the cooperative diversity benefits. We derive the number of hops that minimizes the end-to-end outage probability. On the other hand, if the required overhead for...
In order to ensure a reliable and efficient end-to-end communication among the network nodes in a Mobile Ad Hoc Network (MANET), an appropriate routing protocol is needed. In this paper, we present an extensive simulation-based comparison of three well-known MANET routing protocols (AODV, DSDV and OLSR) evaluating their performance in three real-life scenarios. Considering various performance metrics...
Assurance network technologies are necessary to realize trustable terminal/infrastructure service applications. Heterogeneous requirements are independently generated for assurance networks. In real situations, nodes are not uniformly distributed in networks, and it is assumed that there are dense and sparse areas. This difference of node densities will be serious in the large scale networks. When...
MANETs are attracting attention for their potential use in several fields such as collaborative computing and multimedia communications. MANET nodes cooperate in an autonomous way by forwarding packets to each-other. Considering mobility of the terminals, routes change dynamically so routing algorithms are very important for operation of MANETs. These protocols and other algorithms are tested by simulations,...
Mobile Ad hoc Networks (MANETs) are attracting attention for their potential use in several fields such as collaborative computing and multimedia communications. MANET nodes cooperate in an autonomous way by forwarding packets to each-other. Considering mobility of the terminals, the routes change dynamically so routing algorithms are very important for operation of MANETs. In this paper, we analyse...
Mobile Ad-hoc Networks (MANETs) are increasingly becoming attractive for usage in time-critical applications and collaborative computing. In this paper, we investigate the performance of a MANET test bed for different scenarios in indoor and outdoor stairs environment considering throughput and packet loss metrics. We analyze the behavior of Optimized Link State Routing (OLSR) protocol. We design...
The absence of any fixed infrastructure and mobility of Mobile Ad-hoc Networks (MANETs) make them attractive for usage in time-critical applications and collaborative computing. Recently MANETs are also used in real-time communications such as audio phone calls. In this paper, we investigate the performance of an outdoor stairs MANET test bed for different scenarios considering throughput and packet...
As the services have increased many fold with variety of data types pumped into network, which included multimedia and fast changing conditions. The problem of congestion has also increased and posing the threat to Network performance and degradation of throughput due to change in topology and drawbacks in routing algorithms. In this paper, two a new routing protocol Advanced Optimized Link State...
In this paper, we deal with congestion control for multi-flow traffic in wireless mobile ad-hoc networks (MANET). For simulations, we used ns-3 open source network simulator considering Optimized Link State Routing (OLSR) routing protocol. We present the MANET performance considering random waypoint mobility model for different number of nodes and different area sizes, by sending multi-flow traffic...
A set of wireless mobile terminals, which cooperate by routing packets to each other create a Mobile Ad hoc Network (MANET). MANETs are attracting attention for their potential use in several fields such as collaborative computing and disaster recovery environments. Considering mobility of the terminals, the routes change dynamically and routing becomes a key process for operation of MANETs. Until...
Mobile ad hoc network (MANET) is a collection of mobile nodes that communicate with each other without any fixed infrastructure or a central network authority. From a security design perspective, MANETs have no clear line of defense; i.e. no built-in security. Thus, the wireless channel is accessible to both legitimate network users and malicious attackers. A blackhole attack is a severe attack that...
In this paper, we present the impact of mobility on our scheme called Location-based Routing with Adaptive Request Zone (LoRAReZ). In LoRAReZ, the size of expected zone and request zone are set adaptively based on the distance between the source node and destination node. We evaluate the impact of mobility on the performance of LoRAReZ in terms of packet delivery fraction, routing overhead, end-to-end...
Black hole attack is a well-known attack under which performance and efficiency of mobile ad hoc networks decreases dramatically by malicious nodes. This attack affects functionality of network by dropping data packets. Black hole attack operates based upon two different phases; first, advertising fake routes containing attacker node. Second, dropping received data packets. When it comes to route...
A mobile ad hoc network (MANET) consists of mobile wireless nodes. The communication between these mobile nodes is carried out without any centralized control. The ease of deployment and the infrastructure less nature of Mobile Ad hoc Networks (MANETs) make them highly desirable for the present day multi media communications. Traditional routing protocols may not suffice for real time communications...
Mobile ad-hoc networks (MANETs) are characterize by time-varying nature of the links and network topology. There are transmission impediments like fading, path loss, blockage and interference that add to the inclined behavior of wireless channels. In such an environment, the network must accommodate the changes, providing end-end packet delivery while at the same time incurring low control overhead...
To account for randomly distributed nodes in a wireless ad hoc network, the random access transport capacity is defined as the average maximum rate of successful end-to-end transmission over some distance. In this paper, we consider a random access transport capacity for a dual-hop relaying to find the end-to-end throughput of wireless ad hoc network, where each node relays using Amplify-and-Forward...
The infrastructureless nature of communication in Mobile Ad hoc NETworks (MANET) pose many challenges to the researchers in terms of improving the reliability within the constraints of limited resources. Most of the performance measures and evaluation on different protocols in various network conditions proved the trustworthiness of the routing schemes as well as their limitations. In the present...
It is clearly that mobile ad-hoc networks (MANET) gained the interest of research and market place lastly, and that is due to its wide variety of applications. However, nodes mobility implies rapid topology changes, where a channel aware routing protocol is becoming a necessity to cope with this problem. Many channel aware routing metrics are proposed in the literature, however these routing metrics...
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