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Locating lossy nodes in wireless sensor networks (WSNs) is difficult due to the large amount of sensor nodes, and their limited resources. The state-of-the-art work frames lossy node localization in WSNs as an optimal sequential testing problem guided by end-to-end data. It combines both active and passive measurements to minimize testing cost and number of iterations. However, this hybrid approach...
The distributed virtual forces deployment algorithm provides a very good area coverage and guarantees network connectivity for a sufficient number of sensor nodes. It relies on local information between neighboring sensor nodes. However, its main drawback is node oscillations and hence a high amount of sensor node energy wasted. The grid based strategy divides the monitored area into virtual cells...
Duty cycling is an effective method for prolonging network lifetime in WSNs. In recent studies, dynamic duty cycle schemes are adopted with the use of asynchronous MAC protocols. The opportunistic routing employing forwarder set is applicable for duty-cycled WSNs. Moreover, remaining energy of nodes could be taken into account as a restriction when adjusting duty cycles. In this work, in order to...
The Mobile Ad-hoc Network is a collection of self-configuring mobile node without any infrastructure. It is a multi-hop process because of the limited transmission range of energy constrained mobile nodes and thus each device in network topology acts as a router. Routing protocols are necessary to find paths to reach other node. MANET (Mobile Ad-hoc Network) is a self organizing and self configuring...
Content Centric Networking, which has simple data delivery procedures without using IP addresses, can improve content dissemination in wired networks and wireless Mobile Ad Hoc Networks (MANETs). However, the performance of CCN can be constrained in MANETs due to broadcast storming during content dissemination. Moreover, multiple content providers existing in MANET increase content announcement overhead...
Various Ideas on leader election process has evolved and most of them rely on techniques such as extrema finding or centrality finding methods. These methods are very reliable and highly efficient in a static network, but when discussion reaches ad-hoc networks robustness is questioned and current system doesn't answer to this dilemma. So taking in to account this highly dynamic nature of mobile ad-hoc...
The Optimized Link State Routing (OLSR) protocol has received considerable attention as a viable routing solution for mobile ad hoc networks. However, OLSR suffers from high routing and computational overhead, resulting in significant energy consumption and is quite detrimental to the lifetime and service duration of mobile ad hoc networks. In this work, we provide a detailed analysis of the OLSR...
Topology control in MANETs assigns power level to each node while preserving certain global properties such as connectivity and energy efficiency. Selfishness of nodes affects different tasks in such networks. Due to limited energy resources, nodes may reduce their power level selfishly. Also, nodes can be selfish in packet forwarding and they may avoid relay packets. Topology control and packet forwarding...
In order to understand the role of critical nodes in mobile ad hoc networks (MANETs), dynamic topologies are modelled as time-varying graphs and network topologies within a certain time window are aggregated as a weighted static graph. Critical node behaviour has been previously studied by evaluating how end-to-end throughput is impacted by the removal of high centrality nodes. However, different...
Required resource for nodes in an ad hoc network with specific parameters (e.g. node-count and topology) is one of the most important problems for the manufacturer. In this paper, in the first phase, we showed that according to the proposed game model for the node behaviour, the network converge to a steady state and in the second phase, the process of a node in forwarding the received packets is...
Disjoint Wireless Sensor Networks (WSNs) can be reconnected by placing additional relay nodes in the damaged areas. However, in some cases there may not be enough relays to reconnect all the partitions with the sink node. In such a case, some of the relays can exploit their motion capabilities and temporarily act as a mobile data collector (MDC) between partitions providing intermittent connectivity...
This paper presents a new approach to detect node failures to support fault tolerant application on mobile sensor networks in an optimized way. Our approach takes advantage of localization algorithm message exchanges to implement a failure detector algorithm, optimizing sent messages, reducing energy consumption and contributing to avoid the nodes scalability problem. We analyze a network performance...
Multipoint relaying is a key concept adopted in the optimized link state routing protocol (OLSR). It realizes efficient flooding of topology control (TC) messages. It simultaneously supports generating small topology information which is enough to find the shortest path for any pair of nodes. In this paper, we propose a method to find more efficient multipoint relay (MPR) set, in terms of reducing...
As Mobile Ad hoc Networks (MANETs) are attracting attention for their potential use in several fields such as collaborative computing and multimedia communications, there is an increasing need to minimize the overhead introduced by routing protocols in the network. In this paper, we analyze the performance of a MANET by simulations, in terms of RREQ, RREP and RERR, considering Random Waypoint Mobility...
We introduce a fault tolerant bio-inspired topolog-ical control mechanism (TCM-Y) for the evolutionary decision making process of autonomous mobile nodes that adaptively adjust their spatial configuration in MANETs. TCM-Y is based on differential evolution and maintains a user-defined minimum connectivity for each node with its near neighbors. TCM-Y, therefore, provides a topology control mechanism...
In wireless ad hoc networks, nodes may act selfishly to preserve their limited energy resources. This behavior can cause the network performance to drop. Therefore, cooperation between peers is necessary to keep ad hoc networks operational. Beside the need to actively encourage cooperation, passive encouragement is also needed to overcome the effect of factors that may limit cooperation. These factors...
In this paper, we propose an Artificial Bee Colony (ABC) algorithm, a swarm-based artificial intelligence algorithm, for computing a connected dominating set (CDS) in ad hoc wireless networks, which include mobile ad hoc networks (MANETS). ABC Algorithm is an optimization algorithm based on the intelligent behavior of honey bee swarm. Wireless ad hoc networks appear in a wide variety of applications,...
Mobile Ad hoc Networks (MANETs) are used for many strategic commercial and military applications where it is not feasible to use a centralized controller or manually deploy assets. They have proved useful for many practical applications, such as search and rescue, clearing mine fields, and transportation systems. We introduce a differential evolution based topological control mechanism for the decision...
Due to its obvious importance, fault detection and localization is a well-studied problem in communication networks, as attested by the many techniques designed to address this problem. The inherent variability, limited component reliability, and constrained resources of MANETs (Mobile Ad hoc Networks) make the problem not just more important, but also critical. Practical development and deployment...
Node faults may be frequent in a mobile ad hoc network (MANET). Most work related to fault detection and localization for MANETS essentially use changes in topology to identify faults. Most of this work does not distinguish between node movement that results in a functioning node moving out of range of all other nodes versus a node that crashes as the result of a radio transmitter malfunctioning or...
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