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Data Dissemination Protocols In Wireless Sensor Networks : Design, Modeling And Security

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Data Dissemination Protocols In Wireless Sensor Networks : Design, Modeling And Security

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dc.contributor.author De, Pradip en_US
dc.date.accessioned 2008-08-08T02:31:13Z
dc.date.available 2008-08-08T02:31:13Z
dc.date.issued 2008-08-08T02:31:13Z
dc.date.submitted May 2008 en_US
dc.identifier.other DISS-2060 en_US
dc.identifier.uri http://hdl.handle.net/10106/967
dc.description.abstract Wireless sensor and actuator networks have been one of the stepping stones towards realizing a pervasive computing infrastructure. However, in a post-deployment scenario, transferring critical updates and reconfigurations on a network-wide scale is a non-trivial proposition. Wireless techniques provide the only means of communication, and consequently, an in-depth study of the multihop broadcast based communication paradigm and the design of efficient and reliable data dissemination protocols for reprogramming a sensor network is of paramount importance. In this dissertation, we initially focus on the formal modeling and performance analysis of broadcast-based data dissemination protocols in wireless sensor networks. The data propagating in the network could be either small configuration information to be shared by all the nodes or a large code image required for reprogramming the network. In order to better understand the propagation behavior, we construct a mathematical model that allows us to compare different dissemination protocols in terms of their speed of propagation and extent of network reachability. Next, from a perspective of security, we investigate the potentially disastrous threat of node compromise originating from a single node infected with a piece of malware, propagating to other nodes and gradually compromising the entire sensor network. Focusing on the possible epidemic breakout of such a propagation, we model and analyze this spreading process and identify key factors determining potential outbreaks. More importantly, we compare the propagation process based on different sensor deployment strategies, for instance, uniform and group-based deployment, thereby getting valuable insights for designing secure networks. Subsequently, we delve onto a specific case of a malware spreading over existing data dissemination protocols in sensor networks. In order to better understand these protocols' vulnerability to piggybacked virus attacks, we construct a mathematical model for the malware infection, incorporating important parameters derived from the communication patterns of the protocol under test. We further enrich our study by observing the effects of a simultaneous recovery process on the infection propagation. The overall result is an approximate but flexible framework to characterize a broadcast protocol in terms of its vulnerability to malware propagation. Having focused on analyzing data dissemination techniques in static sensor networks, we observe that existing data dissemination protocols are inefficient in a mobile environment and require effective modifications to suit the uncertainties and demands of network mobility. Thus, we propose a novel wireless multihop data dissemination protocol, suitable to a mobile sensor network and evaluate it through extensive simulations as well as real testbed implementation on a network of SunSPOT devices. Our results indicate an improved performance of our protocol over existing reprogramming protocols, both in terms of completion time and total number of messages transmitted in the network. en_US
dc.description.sponsorship Das, Sajal en_US
dc.language.iso EN en_US
dc.publisher Computer Science & Engineering en_US
dc.title Data Dissemination Protocols In Wireless Sensor Networks : Design, Modeling And Security en_US
dc.type Ph.D. en_US
dc.contributor.committeeChair Das, Sajal en_US
dc.degree.department Computer Science & Engineering en_US
dc.degree.discipline Computer Science & Engineering en_US
dc.degree.grantor University of Texas at Arlington en_US
dc.degree.level doctoral en_US
dc.degree.name Ph.D. en_US
dc.identifier.externalLink https://www.uta.edu/ra/real/editprofile.php?onlyview=1&pid=177
dc.identifier.externalLinkDescription Link to Research Profiles

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