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001-es BibID:BIBFORM062506
Első szerző:Gál Zoltán (informatikus)
Cím:Information flow and complex event processing of the sensor network communication / Zoltán Gál, Hunor Sándor, Béla Genge
Megjegyzések:Research institutes and companies are focusing intensively on Complex Event Processing, Event Stream Processing, Information Flow Processing and Surprise Event Detection methods and algorithms. This phenomenon is intensified by the rapid evolution and spreading in practice of the Internet of Things services. A huge amount of data is created continuously by the physical and logical sensors embedded into various equipment and aimed to monitor the state of physical processes. Time critical query-response mechanisms of the QoS based systems are more and more penetrating in the low bandwidth wireless sensor environment, as well. The behavior of the wireless sensor network requires special evaluation of the state information sent to and processed by the sink node. The items of the status information flow are affected by the low energy and low bandwidth characteristics of sensor networks. Despite of uncertainty of the data transmission in wireless sensor networks the energy constraint permits rarely retransmission of data affected by error. To mitigate the aforementioned issues, cognitive infocommunication algorithms may prove to be an effective solutions. Consequently, this paper presents a method to detect special events and surprises in time processes of the sensor network communication. The proposed method is applied to ZigBee sensor network (based on IEEE 802.15.4 standard) in different congestion scenarios.
ISBN:978-1-4673-8128-4 978-1-4673-8129-1
Tárgyszavak:Műszaki tudományok Informatikai tudományok tanulmány, értekezés
Information Flow Processing
Complex Event Processing
Event Stream Processing
Surprise Event Detection
Internet of Things
Wireless Sensor Network
Quality of Service
Quality of Experience
Megjelenés:6th IEEE Conference on Cognitive Infocommunications CogInfoCom 2015 : Proceedings, October 19-21, 2015, Széchenyi István University Győr, Hungary. - p. 467-471. -
További szerzők:Sándor Hunor Genge Béla
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Intézményi repozitóriumban (DEA) tárolt változat


001-es BibID:BIBFORM062502
Első szerző:Sándor Hunor
Cím:Security assessment of modern data aggregation platforms in the Internet of Things / Hunor Sándor, Béla Genge, Zoltán Gál
Tárgyszavak:Műszaki tudományok Informatikai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Sensor Data Aggregation
Heterogeneous network
Threat Analysis
Attack Tree
Megjelenés:International Journal of Information Security Science. - 4 : 3 (2015), p. 92-103. -
További szerzők:Genge Béla Gál Zoltán (1966-) (informatikus)
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Intézményi repozitóriumban (DEA) tárolt változat


001-es BibID:BIBFORM056026
Első szerző:Sándor Hunor
Cím:Performance analysis of wireless sensor networks / Hunor Sándor, Piroska Haller, Zoltán Gál
Megjegyzések:This work focuses on the performance analysis of parallel bidirectional periodic peer-to-peer communication using IEEE 802.15.4 communication. The IEEE 802.15.4 communication standard forms the basis of popular communication protocols for wireless mesh networks such as the ZigBee specification, which received remarkable attention in recent years because of the growing popularity of the Internet of Things. The high rate bidirectional periodic data transfer is a commonly used traffic type in many applications on these networks, such as closed-loop networked control, sensor monitoring, and audio or video transmission. A distributed approach based on the packets received was used to monitor the performance indicators (jitter and packet loss rate) of the peer-to-peer communication in every communication node. As a performance analysis we carried out practical measurements in different cases: with and without ACK; different packet size and period; with and without parallel competitive traffic. Based on the practical results we proposed a parallel data transmission technique that increases the throughput of the sensor network.
Tárgyszavak:Műszaki tudományok Informatikai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
wireless network
Tárgyak Internete (IoT)
Megjelenés:Procedia Technology. - 19 (2015), p. 842-849. -
További szerzők:Haller Piroska Gál Zoltán (1966-) (informatikus)
Pályázati támogatás:TÁMOP-4.2.2.C-11/1/KONV-2012-0001
Tárgyak Internete és az IPv4/IPv6 rendszerekkel való integrációja
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Intézményi repozitóriumban (DEA) tárolt változat
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