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Identification of critical nodes in wireless sensor network and provide methods to decrease their impacts on performance
dc.contributor | Careglio, Davide |
dc.contributor | Domingo Pascual, Jordi |
dc.contributor.author | Ojaghi Kahjogh, Behnam |
dc.date.accessioned | 2017-09-01T14:26:16Z |
dc.date.available | 2017-09-01T14:26:16Z |
dc.date.issued | 2017-07-17 |
dc.identifier.uri | http://hdl.handle.net/2117/107319 |
dc.description.abstract | The technological improvements in hardware and extensive standardization efforts in software development allow Wireless Sensor Networks (WSN) to be employed more widely and extend its application areas. The main challenge of the WSN studied in the literature is achieving the longest node lifetime given the limited battery capacities of the nodes. However, the lack of physical protection and inadequate security mechanisms make WSNs also vulnerable against different types of attacks and natural phenomena. In this thesis, we analyze the fact that not all the nodes have the same impact on the network performance in case of their incapacitation. Indeed, there are some critical nodes in the WSN, i.e. nodes that, once incapacitated, causes the most deterioration on the network performance. In this work, the focus is on two crucial network performance metrics, namely the lifetime and the latency and we investigate the effect that the elimination of the critical nodes has on these metrics by using Mixed Integer Programming (MIP) models. Furthermore, we introduce a novel method of adding spare node to compensate the destructive effects of failure of critical nodes on network performance. Numerical evaluations show the high impact these critical nodes have on lifetime and latency and prove how important is their identification for improving the network maintenance and for the adjustment of the service tolerance. Moreover, the addition of spare node could mitigate the effects of critical nodes failure significantly. |
dc.language.iso | eng |
dc.publisher | Universitat Politècnica de Catalunya |
dc.rights | S'autoritza la difusió de l'obra mitjançant la llicència Creative Commons o similar 'Reconeixement-NoComercial- SenseObraDerivada' |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject | Àrees temàtiques de la UPC::Enginyeria de la telecomunicació |
dc.subject.lcsh | Wireless sensor networks |
dc.subject.other | Wireless Sensor Networks |
dc.subject.other | Critical Node |
dc.subject.other | WSNs lifetime |
dc.subject.other | WSNs latency |
dc.subject.other | Spare node |
dc.subject.other | Optimization |
dc.title | Identification of critical nodes in wireless sensor network and provide methods to decrease their impacts on performance |
dc.type | Master thesis |
dc.subject.lemac | Xarxes de sensors |
dc.identifier.slug | ETSETB-230.127739 |
dc.rights.access | Open Access |
dc.date.updated | 2017-07-28T05:50:50Z |
dc.audience.educationlevel | Estudis de primer/segon cicle |
dc.audience.mediator | Escola Tècnica Superior d'Enginyeria de Telecomunicació de Barcelona |
dc.audience.degree | MÀSTER UNIVERSITARI EN ENGINYERIA DE TELECOMUNICACIÓ (Pla 2013) |