Search results for "Mobile ad hoc network"

showing 10 items of 29 documents

TCP Performance in Mobile Ad hoc Networks

2013

International audience; In this paper, we present a survey of TCP (Transmission Control Protocol) protocol for better performance in the MANET (Mobile Ad Hoc Network). After a short presentation of the main features of TCP, we give the most important problems from which TCP suffer in MANET. We present after that some approaches proposed in the literature in order to improve its performance. Our paper contains also a performance evaluation of TCP NewReno and TCP Vegas transport protocols under AODV and DSR routing protocols. The simulations are conducted under varying conditions of number of TCP connections, number of nodes and mobility.

CUBIC TCPTCP accelerationComputer scienceTCP tuning050801 communication & media studies02 engineering and technologyTCP Friendly Rate ControlTCP Westwood[INFO.INFO-NI]Computer Science [cs]/Networking and Internet Architecture [cs.NI]0508 media and communications0202 electrical engineering electronic engineering information engineeringZeta-TCPMobile Ad hoc NetworksProblems of TCP in MANETTCP Protocolbusiness.industry05 social sciencesComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKSImproving of TCP in MANET020206 networking & telecommunicationsINGENIERIA TELEMATICATCP VegasTCP global synchronizationPerformance evaluationTCP NewRenoCompound TCPbusinessComputer network
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A novel faster failure detection strategy for link connectivity using Hello messaging in mobile ad hoc networks

2019

Faster failure detection is one of the main steps responsible for efficient link connectivity in mobile ad hoc networks (MANETs). Under a random behaviour of network nodes and link/node failure, th...

Computer Networks and CommunicationsComputer sciencebusiness.industryStochastic processNode (networking)020206 networking & telecommunications02 engineering and technologyLink (geometry)Mobile ad hoc networkHardware and Architecture0202 electrical engineering electronic engineering information engineeringbusinessSoftwareComputer networkInternational Journal of Ad Hoc and Ubiquitous Computing
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Data offloading and task allocation for cloudlet-assisted ad hoc mobile clouds

2016

Nowadays, although the data processing capabilities of the modern mobile devices are developed in a fast speed, the resources are still limited in terms of processing capacity and battery lifetime. Some applications, in particular the computationally intensive ones, such as multimedia and gaming, often require more computational resources than a mobile device can afford. One way to address such a problem is that the mobile device can offload those tasks to the centralized cloud with data centers, the nearby cloudlet or ad hoc mobile cloud. In this paper, we propose a data offloading and task allocation scheme for a cloudlet-assisted ad hoc mobile cloud in which the master device (MD) who ha…

Computer Networks and CommunicationsComputer sciencemobile cloud computingDistributed computingMobile computingCloud computing02 engineering and technologyad hoc mobile cloudoffloading0202 electrical engineering electronic engineering information engineeringStackelberg competitionCloudletElectrical and Electronic Engineering020203 distributed computingbusiness.industrycloud computing020206 networking & telecommunicationsEnergy consumptionMobile ad hoc networkstackelberg gameMobile cloud computingTask (computing)businessMobile deviceInformation SystemsComputer networkcloudlet
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Continuous energy-efficient monitoring model for mobile ad hoc networks

2021

The monitoring of mobile ad hoc networks is an observation task that consists of analysing the operational status of these networks while evaluating their functionalities. In order to allow the whole network and applications to work properly, the monitoring task has become of considerable importance. It must be carried out in real-time by performing measurements, logs, configurations, etc. However, achieving continuous energy-efficient monitoring in mobile wireless networks is very challenging considering the environment features as well as the unpredictable behavior of the participating nodes. This paper outlines the challenges of continuous energy-efficient monitoring over mobile ad hoc n…

Computer scienceWireless networkDistributed computingContinuous monitoringTask analysisEnergy consumptionMobile ad hoc networkMarkov decision processEfficient energy useTask (project management)2021 International Wireless Communications and Mobile Computing (IWCMC)
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Mobile Encounter Network - the missing data link

2008

In this paper, we discuss about the applicability of a short-range wireless communication scheme called Mobile Encounter Network (MEN). Encounters between devices communicating while moving allows ad-hoc -type data transfer to be performed. A background for the emerging of such networks is given. The essential properties of the MEN data transfer are specified. Based on this, the role of MEN as a data transfer medium is discussed. The conclusion is that such networking technique may provide additional value compared to the traditional wireless communication.

Delay-tolerant networkingKey distribution in wireless sensor networksAdaptive quality of service multi-hop routingWireless ad hoc networkWireless networkComputer sciencebusiness.industryDistributed computingMobile computingWireless WANMobile ad hoc networkbusinessComputer networkProceedings of the 12th international conference on Entertainment and media in the ubiquitous era
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A Novel Energy Model for MANETs based on Graphs with Activation Windows

2005

Energy usage optimization is still an important issue and a critical design factor for mobile ad hoc networks (MANETs). Only recently a few proposals appeared that consider energy-aware optimizations for routing protocols. In this paper we describe an analytical model for MANETs which is based on graphs with activation windows. The activation windows allow to model the on-off status of the network devices. Moreover, we propose an algorithm with pseudo-polynomial complexity, called STP algorithm (STPA), that based on the current position and state of the nodes determines the shortest time path between the source node and the destination node.

Dynamic Source RoutingComputer sciencebusiness.industryWireless ad hoc networkNode (networking)Distributed computingWireless Routing ProtocolMobile ad hoc networkLink-state routing protocolOptimized Link State Routing ProtocolComputer Science::Networking and Internet ArchitectureDestination-Sequenced Distance Vector routingbusinessComputer network13th Euromicro Conference on Parallel, Distributed and Network-Based Processing
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Evaluating the Performance of Real Time Videoconferencing in Ad Hoc Networks Through Emulation

2008

The validation of new video protocols and applications for mobile ad hoc networks in a real environment is an important task. In this work we present Castadiva, a test-bed architecture that allows validating software solutions for ad hoc networks using low-cost, off-the-shelf devices and open source software. We use this tool to test a videocall using the OLSR protocol in different scenarios, varying the number of hops between the caller and the receiver. The results obtained in this paper show that, for an ad hoc network with a large number of hops, the quality of videocalls suffers a significant degradation even in the absence of mobility.

EmulationAd hoc testingVehicular ad hoc networkAdaptive quality of service multi-hop routingWireless ad hoc networkbusiness.industryComputer scienceDistributed computingComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKSMobile ad hoc networkAd hoc wireless distribution serviceOptimized Link State Routing ProtocolbusinessComputer network2008 22nd Workshop on Principles of Advanced and Distributed Simulation
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A New Approach for the Reliability of Vehicular Ad Hoc Networks

2018

Vehicular ad hoc networks (VANET), a subset of Mobile Ad hoc Networks (MANETs), is a wireless communication technology applied to transportation, referring to a set of smart vehicles used on the road. These vehicles provide communication services among one another (V2V) or with Road Side Infrastructure (V2I). The main benefits of VANET are enhancing road safety, reducing energy use and emissions, and giving information services. Reliability is one of the most critical issues related to VANET since the information transmitted is distributed in an open access environment. We focused in this paper, on the reliability of VANET as a function of reliable hardware and their functionality taking in…

Fault tree analysisVehicular ad hoc networkWireless ad hoc networkComputer sciencebusiness.industryProbabilistic logicWirelessReliability block diagramMobile ad hoc networkbusinessReliability (statistics)Reliability engineeringSSRN Electronic Journal
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Towards a layer-less network architecture — A case from Wireless Sensor Networks

2011

Ad hoc and Wireless Sensor Networks (WSNs) form a challenging domain for existing network protocols and paradigms to fit into. The traditional models conceived for wired networking and adapted for wireless and mobile environments provide an inefficient and ungraceful outcome when exercised against highly dynamic and highly mobile nature of ad hoc wireless sensor networks. Efforts are being made to tweak existing (and sometimes create from scratch) principles and models that can provide a concrete framework for such newer paradigms. The momentum of the traditional layered architecture carried over from the wired networks to infrastructure based wireless networks pushes the same approaches as…

Key distribution in wireless sensor networksVehicular ad hoc networkWireless ad hoc networkComputer sciencebusiness.industryWireless networkDistributed computingMobile wireless sensor networkMobile ad hoc networkAd hoc wireless distribution servicebusinessWireless sensor networkComputer network2011 2nd International Conference on Wireless Communication, Vehicular Technology, Information Theory and Aerospace & Electronic Systems Technology (Wireless VITAE)
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Testing the H.264 error-resilience on wireless ad-hoc networks

2004

The purpose of this paper is to provide a framework to tune and evaluate the performance of the H.264 codec in 802.11b wireless ad-hoc networks. The codec's error-resilience features are measured under stress conditions typical to these networks, and the most critical parameters are presented. We present solutions concerning the random packet loss problem and show how to quickly recover from packet loss bursts.

Mobile radioComputer sciencebusiness.industryWireless ad hoc networkComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKSBandwidth (signal processing)Data_CODINGANDINFORMATIONTHEORYMobile ad hoc networkPacket lossCodecWirelessbusinessResilience (network)Computer networkProceedings EC-VIP-MC 2003. 4th EURASIP Conference focused on Video/Image Processing and Multimedia Communications (IEEE Cat. No.03EX667)
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