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Wireless sensor networks are often deployed in harsh environments, where the adversary is able to capture certain sensors. Once a sensor is compromised, the adversary can easily replicate it and deploy several replicas back into the network for further malicious activities. Although a number of protocols have been proposed to tackle such node replication attacks, few of these schemes are suitable...
Mobile sink brings new challenges to densely deployed and large wireless sensor networks (WSNs). When the sink moves, frequent location updates from the sink can generate excessive power consumption of sensors. In this paper, we propose IAR, an Intelligent Agent-based Routing protocol that provides efficient data delivery to mobile sink. Proposed algorithm reduces signal overhead and improve degraded...
This paper describes a cooperative MANET protocol dedicated to intelligent transportation systems and its new experiment results in mobile scenarios. The protocol is named CIVIC (Communication Inter Veacutehicule Intelligente et Coopeacuterative). It is an auto-configuration inter-vehicle communication protocol, which supports ad-hoc and infrastructure networks, contains reactive and proactive routing...
The present work focuses on emulation and validation of protocol stacks for MANETs (mobile ad-hoc networks) that must support multimedia applications in a tactical environment. We considered a network consisting of some tens of mobile nodes, with randomly variable speeds in the order of some tens of km/h. Nodes are deployed on a scenario of a few km2 and have a radio range of some hundreds of meters...
Most of the routing protocols for mobile disruption-tolerant networks (DTNs), are designed to route data from a single source to a single destination. Many real-world applications, however, need to transfer data to a group of recipients rather than individuals. Proposed architectures for multicast communication in mobile DTNs rely on a global knowledge of multicast group memberships that makes them...
The aim of this paper is to develop an efficient routing mechanism based on heading angle to establish connections. This can be done by prevent unessential links to be established between each pair of nodes that form the connection between the source and the destination. The unessential links represent the fragile links which could be broken easily according to the arbitrary movement of the nodes...
Delay-tolerant networks (DTN) have the capacity to interconnect devices in roomy regions unlike traditional networks. Based on common sense, the more similar the mobility pattern of nodes, the more stable their relative positions, which results in a connection between them with a longer duration In this paper, a novel routing scheme using the similarity degree of mobility pattern is proposed to optimize...
Mobile ad hoc networks are a type of mobile network that functions without any fixed infrastructure. Routing protocols are vital for the proper functioning of ad hoc networks. In the present routing protocols, data is transmitted after choosing shortest path without any consideration of any particular node's traffic which raises the problem of delay of transmission and unbalanced energy consumption...
In this paper, a DHT-based routing protocol which integrates at the network layer both traditional direct routing, i.e. MANET routing, and indirect key-based routing, i.e. P2P routing, has been proposed. The unique feature of such a proposal is the ability to build an overlay network in which both the logical and physical proximity agree, improving so the P2P performances. In addition, it outperforms...
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...
Mobile wireless networks frequently possess, at the same time, both dense and sparse regions of connectivity; for example, due to a heterogeneous node distribution or radio propagation environment. This paper is about modeling both the mobility and the formation of clusters in such networks, where nodes are concentrated in clusters of dense connectivity, interspersed with sparse connectivity. Uniformly...
IEEE 802.11 proposed a number of standards and each one had a specific goal. They can be configured in infrastructure mode or ad hoc mode. In the study of infrastructure mode, the focus was on 802.11 b/g co-existence along with other single mode operations to analyze the throughput and traffic drop through simulation. In the study of ad hoc mode, the focus was to analyze the behavior of ad hoc networks...
In this paper, we propose a protocol for identifying node-disjoint paths in an ad hoc network. The core of a protocol is a scheme that forwards copies of a route request at an intermediate node. We propose schemes that are slotted and utilize the cross-layer properties of an ad hoc network. There can be a trade-off between the overheads incurred during the route discovery and the probability of identifying...
Wireless mesh networks (WMNs) are a type of radio-based network systems which require minimal configuration and infrastructure. One of the factors that influence the performance of WMNs is the underlying routing protocol used. Here, we propose one such routing protocol, called M-OLSR, which is a variant of OLSR, a traditional link-state protocol developed to meet the requirements of mobile adhoc networks...
Multimedia data communication in mobile ad hoc networks involves link un-stability and link-failures. So the existing design of routing protocols failed to achieve a stable QOS. In this paper, we developed an ant colony-based routing protocol for multimedia communications in mobile ad hoc networks. The routing protocol first establishes multiple paths between the source and destination of a data session...
In this paper, we purpose a new routing protocol based on applications of hierarchical routing protocols, named as ldquoMulti-Level Cluster-based Hierarchical Protocolrdquo (MLCP) for large-scale mobile ad hoc networks. Our approach organizes nodes into different levels of clusters. MLCP maintains a hierarchical topology, where elected cluster-heads at lower level do not participate to next cluster-head...
The performance of routing protocols in mobile ad hoc network (MANET) always attracts many attentions. As many previous works have shown, routing performance is greatly dependent to the availability and stability of wireless links. Although there are some studies reported to evaluate the performance of routing protocols in MANET, little work is done for the system overall performance, which is generally...
This paper proposes a neighborhood route diffusion (NRD) mechanism in which certain selected entries from a node's routing table are selectively diffused to its neighbor nodes. When done efficiently, this selective route diffusion can create a temporary envelope of emergency route information to a destination around all nodes that are actively forwarding packets to that specific destination. When...
One of the most important challenges in mobile ad hoc networks is to use an efficient and dynamic routing protocol, as the nodes can move randomly, which requires the routing protocol to respond quickly to the network topology change. In this paper, a new hybrid routing protocol, based on a reactive AODV routing, is introduced. It follows the proactive approach for some special nodes in some interval...
The next generation mobile communication systems will be based on Infrastructure wireless LAN technologies like cellular and ad hoc networks. Such hybrid networks benefit the extension of infrastructure network coverage using Ad Hoc connectivity apart from offering the ad hoc nodes access to the resources of the Wired/Infrastructure networks. In most of the integration strategies Mobile IP is integrated...
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