Search results for "WIRELESS SENSOR NETWORKS"

showing 10 items of 159 documents

SDN@home: A Method for Controlling Future Wireless Home Networks

2016

Recent advances in wireless networking technologies are leading toward the proliferation of novel home network applications. However, the landscape of emerging scenarios is fragmented due to their varying technological requirements and the heterogeneity of current wireless technologies. We argue that the development of flexible software-defined wireless architectures, including such efforts as the wireless MAC processor, coupled with SDN concepts, will enable the support of both emerging and future home applications. In this article, we first identify problems with managing current home networks composed of separate network segments governed by different technologies. Second, we point out t…

Computer Networks and CommunicationsWireless ad hoc networkComputer science02 engineering and technology03 medical and health sciences0302 clinical medicineHome automation0202 electrical engineering electronic engineering information engineeringWirelessElectrical and Electronic EngineeringNetwork architectureResidential gatewaySettore ING-INF/03 - TelecomunicazioniWireless networkbusiness.industryComputer Science Applications1707 Computer Vision and Pattern Recognition020206 networking & telecommunicationsWireless WANService providerNetworking hardwareComputer Science ApplicationsWireless site surveyKey distribution in wireless sensor networksComputer Networks and CommunicationSoftware-defined networkingbusinessTelecommunicationsHeterogeneous networkMunicipal wireless network030215 immunologyComputer network
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Hydrogeologinen WSN-ympäristömonitorointi : tapaustutkimus Kaitforsin patoalueen pohjavesien korkeusseurannan pilottijärjestelmästä

2017

Tämän pro gradu -tutkielman tavoitteena on selvittää Kaitforsin patoalueelle toteutetun pohjavesien monitorointiin Kokkolan yliopistokeskus Chydeniuksessa kehitetyn pilottijärjestelmän näkökulmasta, millaisin menetelmin vedenkorkeuksien ja veden laadun monitorointia voidaan IoT:n ja langattomien sensoriverkkojen asettamista lähtökohdista automatisoidusti suorittaa. Tämän lisäksi tutkimuksen tavoitteena on selvittää automatisoidun ympäristömonitoroinnin nykytilaa ja siihen kytkeytyviä kehityssuuntauksia. Tutkimuksessa perehdytään myös Kaitforsin patoalueelle asennetun pilottijärjestelmän IEEE 802.15.4 -standardiin perustuvaan langattoman sensoriverkon toimintaan ja siihen kytkeytyneiden sens…

pohjavesiwater levelsensoriverkotTapaustutkimuslangaton tekniikkavedenkorkeusympäristövalvontahydrogeologygroundwaterhydrogeologiawireless technologywireless sensor networksympäristömonitorointienvironmental monitoring
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Robust Data Gathering for Wireless Sensor Networks

2006

2005 13th IEEE International Conference on Networks jointly held with the 2005 7th IEEE Malaysia International Conference on Communications, Proceedings Volume 1, 2005, Article number 1635527, Pages 469-474 2005 13th IEEE International Conference on Networks jointly held with the 2005 7th IEEE Malaysia International Conference on Communications; Kuala Lumpur; Malaysia; 16 November 2005 through 18 November 2005; Category number05EX1235; Code 69262 Robust data gathering for wireless sensor networks (Conference Paper) Ortolani, M. , Gatani, L. , Lo Re, G. Dipartimento di Ingegneria Informatica, Università degli Studi di Palermo, Viale delle Scienze Parco d'Orleans, 90128 Palermo, Italy View re…

Settore ING-INF/05 - Sistemi Di Elaborazione Delle InformazioniDynamic Source RoutingStatic routingWi-Fi arrayNetwork packetVisual sensor networkWireless networkComputer scienceWireless ad hoc networkbusiness.industryRetransmissionRetransmissionDistributed computingWireless Routing ProtocolWireless WANGeographic routingKey distribution in wireless sensor networksLink-state routing protocolMobile wireless sensor networkRouting algorithmData gatheringbusinessWireless sensor networkWireless sensor networkComputer network2005 13th IEEE International Conference on Networks Jointly held with the 2005 IEEE 7th Malaysia International Conf on Communic
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MAC Protocols for WuR Enabled WSNs : Design and Performance Evaluation

2017

Master's thesis Information- and communication technology IKT591 - University of Agder 2017 Increasing energy efficiency is a challenging task for protocol design in wireless sensor networks (WSNs) as well as in Internet of things (IoT). Traditionally, duty-cycled (DC) protocols have been widely adopted for data transmissions in WSNs for energy conservation by reducing idle listening and overhearing. Recently, wake-up radio (WuR) has merged as a promising technique to replace DC protocols thanks to its superior performance in both network lifetime and transmission latency. This thesis work focuses on the design and performance evaluation of WuR-enabled MAC protocols considering various traf…

Internet of thingsIKT591ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKSCollision avoidanceWake-up radioEnergy hole problemVDP::Teknologi: 500::Informasjons- og kommunikasjonsteknologi: 550Wireless sensor networks
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Gatherer: an environmental monitoring application based on IPv6 using wireless sensor networks

2013

In this paper, we present an environmental monitoring application based on IPv6 using wireless sensor networks. We show the guidelines to connect this network to internet using the 6LowPAN standard with a real prototype in the evolution of the Internet of Things. We assign a unique IPv6 address to the different nodes motes of the network. Gatherer is based on TinyOS using IPv6 and UDP protocols and allows the data gathering of temperature and relative humidity from the different motes, requesting specific data from individual motes when required, increasing the accuracy of the measures. We compare the performance of our IPv6-based proposed application against others and show the benefits of…

IPv6 addressComputer Networks and Communicationsbusiness.industryWireless networkComputer scienceComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKSIPv6Key distribution in wireless sensor networksHardware and ArchitectureComputerSystemsOrganization_SPECIAL-PURPOSEANDAPPLICATION-BASEDSYSTEMSThe Internetbusiness6LoWPANWireless sensor networkSoftwareComputer networkInternational Journal of Ad Hoc and Ubiquitous Computing
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Adaptive Collision Avoidance through Implicit Acknowledgments in WSNs

2008

The large number of nodes, typical of many sensor network deployments, and the well-known hidden terminal problem make collision avoidance an essential goal for the actual employment of WSN technology. Collision avoidance is traditionally dealt with at the MAC Layer and plenty of different solutions have been proposed, which however have encountered limited diffusion because of their incompatibility with commonly available devices.In this paper we propose an approach to collision avoidance which is designed to work over a standard MAC Layer, namely the IEEE 802.15.4 MAC, and is based on application-controlled delays of packet transmission times. The proposed scheme is simple, decentralized …

Hidden node problemComputer sciencebusiness.industryComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKSSynchronizationTree (data structure)ScalabilityMultiple Access with Collision Avoidance for WirelessWireless Sensor NetworksbusinessWireless sensor networkCollision avoidanceCarrier sense multiple access with collision avoidanceComputer network2008 IEEE Asia-Pacific Services Computing Conference
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MP2P Network in Collecting Data from Sensor Networks

2006

Wireless sensor networks provide numerous applications today. At the same time modern wireless short-range communication technologies combined with mobile users create environments for mobile peerto- peer networks. This paper discusses a concept of an application in which an MP2P network is used for collecting sensor network data. This model requires certain places with a high mobile user density in order to function. Simulation results indicate that the model can be used in environments where these requirements are met.

Vehicular ad hoc networkWi-Fi arrayWireless networkComputer sciencebusiness.industryWireless ad hoc networkDistributed computingMobile computingWireless WANMobile ad hoc networkBase transceiver stationAd hoc wireless distribution servicePublic land mobile networkKey distribution in wireless sensor networksIntelligent sensorIntelligent NetworkMobile wireless sensor networkWirelessRadio resource managementWired communicationbusinessWireless sensor networkHeterogeneous networkComputer network11th IEEE Symposium on Computers and Communications (ISCC'06)
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Adaptive Collision Avoidance through Implicit Acknowledgments in Wireless Sensor Networks

2008

Wireless Sensor Networks Collision Avoidance Implicit Acknowledgment
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Decentralized Lightweight Group Key Management for Dynamic Access Control in IoT Environments

2020

Rapid growth of Internet of Things (IoT) devices dealing with sensitive data has led to the emergence of new access control technologies in order to maintain this data safe from unauthorized use. In particular, a dynamic IoT environment, characterized by a high signaling overhead caused by subscribers' mobility, presents a significant concern to ensure secure data distribution to legitimate subscribers. Hence, for such dynamic environments, group key management (GKM) represents the fundamental mechanism for managing the dissemination of keys for access control and secure data distribution. However, existing access control schemes based on GKM and dedicated to IoT are mainly based on ce…

PROTOCOLSCRYPTOGRAPHYComputer Networks and CommunicationsComputer scienceGROUP COMMUNICATIONKey distributionCore networkRESEAU INFORMATIQUEAccess control02 engineering and technologySCALABILITYTECHNOLOGIE SANS FIL[SPI]Engineering Sciences [physics][INFO.INFO-NI]Computer Science [cs]/Networking and Internet Architecture [cs.NI]TELECOMMUNICATIONForward secrecy0202 electrical engineering electronic engineering information engineeringRekeyingINTERNET OF THINGSElectrical and Electronic EngineeringINTERNETSECURITEDYNAMIC ENVIRONMENTSECURITYIOTTRAITEMENT DES DONNEESbusiness.industryKey distribution center020206 networking & telecommunicationsWIRELESS SENSOR NETWORKSRESEAU DE TELECOMMUNICATIONSGROUP KEY MANAGEMENTINFORMATIQUECommunication in small groupsScalabilityARCHITECTURE CLIENT-SERVEURbusinessCOMPUTER ARCHITECTUREACCESS CONTROLComputer network
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Time synchronization enhancements in wireless networks with ultra wide band communications

2022

The emergence of low cost Ultra Wide Band (UWB) transceivers has enabled the implementation of Wireless Sensor Networks (WSN) based on this communication technology. These networks are composed of distributed autonomous low cost nodes (also known as motes) with their own processing unit, memory and communications. Usually these nodes are power-limited and due to the poor performance and quality of their clocks, time synchronization is in the order of milliseconds and in some specific scenarios till microseconds. The integration of commercial UWB transceivers in these nodes can improve the synchronization accuracy. In particular, we focus on WSN nodes based on off-the-shelf commercial produc…

IEEE 802.15.4Computer Networks and Communicationslinear regressionultra wide bandUNESCO::CIENCIAS TECNOLÓGICAStime synchronizationwireless sensor networksComputer Communications
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