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Challenges of authentication in decentralized mobile networks arise from frequently changing topologies and unreliable contention-based transmissions. We propose a new protocol to speed up authentications, reduce communication costs, and support opportunistic routing under fast-changing topologies. Key pairs are predistributed across the network. Nodes that predistributed the same pair can instantly...
This work describes a clean-slate inter-domain routing protocol designed to meet the needs of the future mobile Internet. In particular, we describe the edge-aware inter-domain routing (EIR) protocol which provides new abstractions of aggregated-nodes (aNodes) and virtual-links (vLinks) for expressing network topologies and edge network properties necessary to address next-generation mobility related...
We propose the use of a graph-theoretic metric called Algebraic Connectivity (ALGC) computed on the egocentric network of an edge to quantify the extent of shared neighborhood between the end vertices of the edge/link in mobile sensor networks (MSNs). The chances for the egocentric network of an edge to stay connected increases with increase in the number of triangles involving the end vertices of...
Nowadays, collaborative applications play an increasing role in mobile communications in order to enable cooperation among mobile and/or stationary participants – often using the peer-to-peer (P2P) group communication paradigm. The probability of communication failures increases in mobile environments. As a consequence, frequent leaving and joining of partners can be observed resulting in unstable...
High speed trains are becoming a popular means of transportation all over the world, such that it is necessary to develop and deploy an infrastructure to provide broadband to passengers on the train. However, there are several challenges to high speed communication systems including the fact that channel conditions change drastically hindering channel estimation accuracy and overall system performance,...
MANET networks (Mobile Ad hoc Networks) are a sub class of mobile and wireless networks. In this type of network, all the nodes are mobile and no fixed infrastructures are considered existing. Among the challenges of the MANET, the stability and the durability of the selected paths in the network. In a previous work, we proposed a solution to this challenge by taking into account the mobility of nodes...
This paper presents a new protocol to self assign node IDs in an Underwater Acoustic Network (UAN). The proposed solution, termed DIVE for Distributed Id assignment and topology discoVEry, is fully distributed and self-adaptive. While assigning the node IDs, additional information is shared to discover the other nodes in the network, the type of these nodes (static or mobile), and the number of hops...
It has been recognized that effective communications and the ability to share various media are keys to a successful operation in public safety and military applications. LTE (Long Term Evolution) is becoming the most widely deployed broadband communication technology making it the technology of choice for public safety to replace TETRA and similar networks. However, LTE is a cellular network by design...
In this paper, a new simulation tool is described which is used to present a decentralized approach on Mobile Ad Hoc Networks. The simulation is developed in Matlab using a decentralizing algorithm. The paper includes a distributed algorithm for adaptive movement of nodes in a MANET (Mobile Ad hoc Network) to maintain the overall topology of the network. The proposed algorithm assumes the presence...
Energy consumption in wireless sensor network is of paramount importance, which is demonstrated by large number of algorithms, techniques and protocols that have been developed to save energy and to extend lifetime. In WSN for mission critical application two performance metrics are: reliability and energy efficiency. In literature CDS based technique is used to achieve reliability. CDs allow communication...
Information Centric Networking (ICN) is a networking framework for content distribution. The communication is based on a request/response model where the attention is centered on the content. The user sends interest messages naming the content it desires and the network chooses the best node from which delivers the content. This way for retrieving contents naturally fits a context where users continuously...
Localization in Wireless Sensor Networks (WSNs) is a major task, since network composed of a large quantity of energy-limited nodes. Most of the WSN constrains are required a localized mechanism. To achieve a greater quality of service a new localized mechanism is proposed in this work, based on neighbor connectivity information. The simulation results show that the proposed work significantly out...
Localization in Wireless Sensor Networks (WSNs) is a major task, since network composed of a large quantity of energy-limited nodes. Most of the WSN constrains are required a localized mechanism. To achieve a greater quality of service a new localized mechanism is proposed in this work, based on neighbor connectivity information. The simulation results show that the proposed work significantly out...
The massive escalation in the number of applications and the technology used in the development of Wireless Sensor Networks (WSN) over the last decade has compelled the designers to adopt a holistic approach while designing WSN applications. This implies that a designer should develop a protocol stack which would be flexible enough to be used by a group of applications if not all on account of differing...
Event detection is a major issue for applications of wireless sensor networks. In order to detect an event, a sensor network has to identify which application-specific incident has occurred based on the raw data gathered by individual sensor nodes. Sensor networks are a sensing, computing and communication infrastructure that are able to observe and respond to phenomena in the natural environment...
In this paper, we evaluate the performance of WSNs for single and multi mobile events using Two Ray Ground radio model and AODV protocol. We consider good put and routing efficiency metrics to evalute the performance of WSN. The simulation results have shown that for single mobile event, the good put is better than multi mobile events when the number of sensor nodes is higher. In case of boids model,...
A mobile ad hoc network consists of only mobile nodes without the access points and the center server. In the mobile ad hoc network environment, a set of nodes in the network and the network topology are frequently changing due to the node appearance, the node disappearance, and the node movement so that it is not easy for users in the network to obtain the services provided in the network. Therefore,...
Mobile ad-hoc networks (MANETs) are autonomous distributed networks, where mobile nodes communicate with each other using wireless links. Since the communication is done by wireless links, it is difficult to grasp how the packets flow between communication nodes. It becomes even more difficult when the number of nodes is increased. In our previous work, we proposed a visualization system for MANET...
In this paper, we present a novel satellite network simulation platform (SNSP) based on OMNeT++ and MiXiM for researchers to develop better protocols for satellite networks. In this platform, multi-formatted satellite orbit data are permitted as input, and inter-satellite links (ISL) are created according to satellites position and specified connection rules. Correspondingly, the satellite network...
We present a new distributed protocol for setting up and maintaining a backbone for multi-hop mobile networks. Our solution, termed M-Backs, is effective in producing backbones with limited size, while being robust and reliable in the face of node mobility. We compare our protocol with previous solutions for mobile backbone set up and maintenance. M-Backs outperforms previous protocols, providing...
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