Improvement of assurance including security for wireless sensor networks using dispersed data transmission

AbstractAssurance networks are one of the essential technologies of New-generation Networks. Assurance is defined as the capability of guaranteeing functional and non-functional system properties such as dependability, security, timeliness and adaptability to heterogeneous and changing requirements. Assurance is essential for sustainable networks and this research focused specifically on providing assurance for WSNs. Node capture attacks are one prospective kind of attack on WSNs. To reduce negative effect of node capture attacks, we have previously proposed secure decentralized data transfer. In this proposed method, it was assumed that multiple paths were in place. In this paper as well, we again propose using the multipath routing method. To make multiple paths fit our previously proposed method, we have modified ATR (Augmented Tree Based Routing). We have conducted simulation experiments using our proposed method in a network simulator. The results show that our previously proposed method is effective in both cases in which the network size is small or large. In addition, we conducted other simulation experiments to measure several aspects of the assurance of our method. We measured in terms of varying parameters such as node densities, distance between the source and the destination nodes, and so on. Additionally, our method is more assured than the single path-based method

On-demand Multipath Routing Protocols for Mobile Ad-Hoc Networks: A Comparative Survey

A Mobile Ad Hoc Network (MANET) is an infrastructure-less, self-organized and multi-hop network with a rapidly changing topology causing the wireless links to be broken at any time. Routing in such a network is challenging due to the mobility of its nodes and the challenge becomes more difficult when the network size increases. Due to the limited capacity of a multi-hop path and the high dynamics of wireless links, the single-path routing approach is unable to provide efficient high data rate transmission in MANETs. The multipath routing is the routing technique of using multiple alternative paths through a network. Furthermore, whenever a link failure is detected on a primary route, the source node can select the optimal route among multiple available routes. Therefore, the multipath routing approach is broadly utilized as one of the possible solutions to overcome the single-path limitation. Most of the multipath routing protocols are based on Ad Hoc On-Demand Distance Vector (AODV). The objective of this paper is to provide a survey and compare sets of multipath routing protocols for mobile ad-hoc networks. This survey will motivate the design of new multipath routing protocols, which overcome the weaknesses identified in this paper

Prenos podataka, bezbednost i energetska efikasnost internet stvari (Internet of things) rešenja zasnovanih na tehnologiji bežičnih senzorskih mreža

Glavni doprinos ove doktorske teze jeste model procene potrošnje energije bežičnih senzorskih mreža za zadati skup protokola topologije i kriptografskih algoritama male računske i implementacione zahtevnosti. Predložena metoda procene potrošnje energije analizira se u simulacionom scenariju za nekoliko protokola i kriptografskih algoritama. Matematički model se testira u simulacionom okruženju gde se bežične senzorske mreže primenjuju kao tehnologija za komunikaciju na otvorenom području između senzorskih čvorova i uređaja zasnovanih na tehnologiji internet stvari. Rezultati simulacije potvrđuju formulu predloženu za procenu snage. Model predložen u ovoj tezi može se koristiti za odabir odgovarajućeg protokola topologije i kriptografskog algoritma. Na osnovu definisanog modela i rezultata simulacije predstavljena je sortirana lista kombinacija protokola topologije i algoritma šifrovanja. Najbolji rezultati u smislu potrošnje energije dobijaju se korišćenjem protokola A3 topologije i kriptografskog protokola KATAN64