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Multicasting communication serves as one critical operation to support many applications of Mobile Ad hoc networks (MANETs) that achieve group communication rather than pairs of individuals. Multicast routing protocols becomes increasingly important in MANETs because they effectively coordinate a set of nodes. Also, it provides efficient routing for multimedia applications such as video conferences,...
Mobile Ad Hoc Networks (MANETs) have been an important research topic for the last years, playing a crucial role within the fast growing sector of mobile communications. At the same time, video applications over mobile devices are becoming widely used by nowadays mobile clients, where the quality in the transmission of such contents will determine the success of these applications in the future. Therefore,...
Mobile Ad hoc Networks (MANETs) always bring challenges to the designers in terms of its security deployment due to its dynamic and infrastructure less nature. In the past few years different researchers have proposed different solutions for providing security to MANETs. In most of the cases however, the solution is targeting a particular attack or multiple attacks but fails to find the root cause...
Without any pre-existing fixed network infrastructure with rapid configuration of wireless connections on-the-fly, network topology in MANETs keep on changing rapidly. Thus achieving data transmissions between wireless nodes in MANETs with improved QoS parameters become a challenging issue. To achieve this one has to concentrate on the routing protocol they choose. In our paper we proposed an algorithm...
In the few last years, there is an increasing need of QoS guarantees for multimedia and real time applications in mobile ad hoc networks. While several QoS routing protocols were proposed, adaptive routing has not be enough exploited. This paper introduces a new multipath quality of service (QoS) routing protocol for mobile ad-hoc networks (MANETs) called QoSBeeManet. Based on the autonomic bee communication...
Several routing protocols for mobile ad hoc networks work efficiently only in bidirectional networks. Unidirectional links may exist in a real network due to variation in transmission power of different nodes, noise or other signal propagation phenomena, and heterogeneity in transmission hardware of nodes in the network. We introduce a sub-layer called Modified AODV (ad-hoc on demand distance vector)...
Securing a Wireless Ad Hoc Network is one of the major concerns for the researchers. Due to wide-ranging characteristics of the ad-hoc networks, it is always at a risk to internal as well as external attacks. Many solutions have been proposed and currently being improved in this area. Most of these solutions involve encryption, secure routing, quality of service etc. Each of them is designed to operate...
Mobile tactical MANETs are interconnected via a quasi-static backbone network (QSN) that is relatively stationary and has substantial radio bandwidth capability. Because of high mobility and terrain sensitivity, the bandwidth available to mobile nodes within the MANET may vary significantly over time. During the periods where the bandwidth available is reduced, MANET nodes may be unable to handle...
In this paper, we extends bandwidth balancing technique in wired networks to operate in mobile ad hoc networks (MANETs). In bandwidth balancing in Distributed-Queue-Dual-Bus (DQDB), different nodes occupy the same channel, and information about the bandwidth is transferred between nodes in the unused bandwidth. Similarly, in wireless networks, the capacity on a channel is shared by several sources...
Protocol with QoS guarantee in unidirectional MANET is very important. Many of the classical routing protocols are put forward on the basis of two-way communication. While there exits unidirectional link because of differences in transmission power in each terminals as well as environmental factors such as topography and so on. This paper studies and applies the shortest path method based on graph...
Wireless networks will carry various multimedia applications such as voice, video and data in the future. In order to provide service quality for delay sensitive applications such as voice and video, it is necessary that mobile ad hoc networks (MANETs) support quality of service (QoS) routing in terms of bandwidth and delay. Content-based communication is a competent candidate for such dynamic networks...
The mobile ad hoc networks are self-organizing and does not require fixed infrastructure. In such networks, portable computing devices exchange information with each other requiring service discovery protocol. The proposed model automatically discovers quality-based services by organizing two integrated directory-based structure: backbone-based and cluster-based. This structure optimizes the flooding...
Mobile Ad-hoc Network is an infrastructure less and decentralized network which need a robust dynamic routing protocol. Many routing protocols have been proposed to accommodate the needs of communications for MANET. In this paper, we have compared the performance of traditional proactive DSDV routing protocol along with on-demand reactive routing protocols for MANET: AODV. From analysis, the On-demand...
Multimedia applications invariably require guaranteed Quality of Service (QoS) and resource reservation. These requirements have raised numerous challenging technical issues for routing in MANETS. We have proposed a hybrid Differentiated Services Architecture (HDSA) to provide QoS provisioning in dynamic topology based MANET. Our proposed HDSA introduces routing metrics such as available bandwidth...
TCP, the facto standard used in today's Internet, has been found to perform poorly in Mobile Ad Hoc Networks (MANETs). This is exacerbated by contention with increasing UDP-based high priority multimedia traffic and the class differentiation introduced in current QoS protocols, which results into TCP starvation and increased spurious timeouts. In this paper, we propose a cross-layer TCP enhancement...
In mobile ad hoc networks, the unstable transport layer and inhibited amount of traffic being carried out by the network is owing to the high packet loss rates and frequent topological changes. It is essential that least available bandwidth and end-to-end latency along with congestion around a link are integrated in a QoS-based routing metric for MANETs. In this paper we develop a QoS-based, robust...
Mobile ad hoc networks (MANETs) are collection of mobile nodes communicate in a multi-hop manner without relaying on any infrastructure or central administration. Multimedia and group-oriented applications over MANETs gain high popularity, which makes providing quality of services (QoS) a key requirement. This work proposed a new efficient approach which aims to find paths between the source and all...
The prediction of performance in Manet (mobile ad-hoc network) used to improve the technology development. The proposed analysis used how to design a network according to the applications of mobile adhoc network experiments with different workloads. This paper shows the variations of any parameter must affect the performance of mobile adhoc network. The average end-to-end delay, throughput and average...
In this paper, we address the problem of collaborative video caching in mobile ad-hoc networks. We consider network portraying static video server with wired interface to gateway node that is equipped with wireless interfaces, other nodes are requiring access to the video streams that is stored at video server. In order to reduce the average access latency as well as enhance the video accessibility,...
Mobile Ad Hoc Networks (MANET) has become one of the most growing areas of research. However, dynamism of MANET poses a number of issues in designing routing protocols for providing effective communication among mobile nodes. One important issue is mobility of nodes.Other inherent shortcomings are dynamic changes in topology due to mobility of intermediate nodes, link failure, and absence of routing...
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