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Discovering and maintaining routes between nodes are one of the biggest challenges in MANETs the ultimate goal of the MANET community is to provide a set of standardized protocols that can be both robust and scalable. This paper proposes routing protocols based on the {heading direction angle + Number of Hops, Number of Hops + heading direction angle, the best heading direction angle route}. The first...
Broadcasting is a basic data dissemination technique, which has a number of applications such as address resolution and route discovery. While data broadcasting has many advantages, it introduces some problems known as broadcast storm problems, which causing a lot of contention, redundant retransmission and collision. In this paper our objective is to reduce the number of retransmission as well as...
In mobile ad hoc net work, transmitting a packet from source to destination needs cooperation among nodes. Since there may be selfish nodes in the network and these selfish nodes are reluctant to relay packets for other nodes in order to protect resources of their own, the performance of the whole network will be influenced. We propose a cooperative incentive mechanism based on game theory. When determining...
This paper describes middleware that establishes a MANET environment with mobile devices and exchanges contents in the devices. The middleware also provides a sharing function as a common service among mobile devices.
High service availability is difficult to achieve in mobile ad hoc networks. The service distribution protocol for mobile ad hoc networks increases the mobile service availability by employing coupled replication and hibernation mechanisms. In this paper, different hibernation behaviors are studied against the general performance of this protocol, especially the replica allocation correctness.
In this paper, we present the implementation and analysis of our testbed considering the link quality window size (LQWS) parameter of optimized link state routing (OLSR) and better approach to mobile ad-hoc networking (B.A.T.M.A.N.) protocols. We investigate the effect of mobility in the throughput of a mobile ad-hoc network (MANET). The mobile nodes move toward the destination at a regular speed...
MANET brings evolution in wireless mobile ad hoc network but it has to face many difficulties due to the dynamic network topologies, lack of centralization, inadequate authentication mechanism, insecure routing and are vulnerable to different types of attacks. Different types of denial of service attacks occur in MANET which is one of the major problems. We used AODV routing because it offers quick...
In this paper we propose a distributed wiki engine for mobile ad hoc network (MANETs). This engine takes into account MANETs specificities, such as the terminals volatility and the mobility that are not well addressed in existing wiki systems. It also uses semantic information about the user and the data to offer intelligent data management.
Three data communication methods can be provided in a MANET: data broadcast, data query, and peer-to-peer messaging. The formation of heterogeneous distributed mobile databases within a MANET that allows people to submit queries or transactions is becoming a reality. Previously, the DD3M data communication protocol (distributed database with 3 communication modes) has been proposed for providing all...
Three data communication methods can be provided in a MANET: data broadcast, data query, and peer-to-peer messaging. The formation of heterogeneous distributed mobile databases within a MANET that allows people to submit queries is becoming a reality. The goal of this paper is to integrate distributed mobile databases in MANETs and proposes a new data communication protocol that supports all three...
A mobile ad hoc network (MANET) is a collection of mobile hosts forming a temporary network on the fly, without using any fixed infrastructure. Characteristics of MANETs are thus a lack of central coordination, the mobility of hosts and a dynamically varying network topology. A multi-hop wireless ad hoc network is considered, where all nodes share a common channel and code division multiple access...
Ad hoc networks are known by many specifications like multi-hop wireless connectivity, frequently changing network topology and the need for efficient dynamic routing protocols that plays an important role. This paper presents a performance comparison between two reactive routing protocols for mobile ad hoc networks: dynamic source routing (DSR), ad hoc on demand distance vector (AODV).Both protocols...
In wireless communication, Mobile Ad Hoc NETwork (MANET) is a set of mobile nodes that are dynamically and randomly located in such a manner that the wireless link among nodes are often changing due to MANET dynamic features. In this MANET environment, if a device wants to connect to Internet, it must establish a communication with an Internet Gateway. The network performance between mobile nodes...
A number of key issues arise in the implementation of scalable multicast protocols for wireless mobile ad hoc networks (MANETs), namely energy consumption and data delivery over unstable/mobile nodes. To improve scalability of these protocols, clustering has been proposed. Clustering allows reducing the number of mobile nodes participating in multicast routing algorithms, which in turn significantly...
Mobile adhoc network (MANET) has become an exciting and important technology in recent years because of the rapid proliferation of wireless devices. MANET's are highly vulnerable to attacks due to the open medium, dynamically changing network topology, cooperative algorithms, lack of centralized monitoring and management point, and lack of clear line defense. In this work we analyze the blackhole...
As laptop computers begin to dominate the marketplace, wireless adapters with varying bandwidth and range capabilities are being developed by hardware vendors. To provide multihop communication between these computers, ad hoc mobile networking is receiving increasing research interest. This paper deals with the analysis of the transmission range effects on On-Demand Multicast Routing Protocol (ODMRP)...
A flat mobile ad hoc network has an inherent scalability limitation in terms of achievable network capacity. It is seen that when the network size increases, per node throughput of an ad hoc network rapidly decreases. This is due to the fact that in large scale networks, flat structure of networks results in long hop paths which are prone to breaks. These long hop paths can be avoided by using virtual...
Recently, mobile ad-hoc networks (MANET) are continuing to attract the attention for their potential use in several fields. Most of the work has been done in simulation, because a simulator can give a quick and inexpensive understanding of protocols and algorithms. However, experimentation in the real world are very important to verify the simulation results and to revise the models implemented in...
The recent advances in wireless technologies and ubiquitous computing have driven an immense interest in mobile ad hoc networks (MANETs). However, the performance of MANETs is highly affected by the behaviour of its constituting nodes, which must cooperate in order to provide the basic networking functionality. So to remove the problem of misbehaving node affecting the behavior of MANET, We present...
A very large number of simulation models have been developed to study ad hoc network architectures and protocols. Evaluating and deploying all sorts of protocols and applications designed for wireless ad hoc networks in a real environment is an important and urgent task. In recognition of this need, and to further our research objectives in the area of wireless ad hoc networks, we have built the E...
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