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Iyer, Venkatraman
Alternative names
Publications (6 of 6) Show all publications
Hamza, A., Keppitiyagama, C., De Zoysa, K., Iyer, V., Hewage, K. & Voigt, T. (2015). A Quadcopter Controller to Maintain Radio Link Quality. In: The First Workshop on Micro Aerial Vehicle Networks, Systems, and Applications for Civilian Use: . Paper presented at DroNet '15 (pp. 21-26).
Open this publication in new window or tab >>A Quadcopter Controller to Maintain Radio Link Quality
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2015 (English)In: The First Workshop on Micro Aerial Vehicle Networks, Systems, and Applications for Civilian Use, 2015, p. 21-26Conference paper, Published paper (Refereed)
National Category
Computer Engineering
Research subject
Computer Science with specialization in Computer Communication
Identifiers
urn:nbn:se:uu:diva-266424 (URN)10.1145/2750675.2750678 (DOI)978-1-4503-3501-0 (ISBN)
Conference
DroNet '15
Available from: 2015-11-09 Created: 2015-11-09 Last updated: 2018-01-10
Iyer, V., Hermans, F. & Voigt, T. (2015). Detecting and avoiding multiple sources of interference in the 2.4 GHz spectrum. In: Wireless Sensor Networks: . Paper presented at EWSN 2015, February 9–11, Porto, Portugal (pp. 35-51). Springer
Open this publication in new window or tab >>Detecting and avoiding multiple sources of interference in the 2.4 GHz spectrum
2015 (English)In: Wireless Sensor Networks, Springer, 2015, p. 35-51Conference paper, Published paper (Refereed)
Place, publisher, year, edition, pages
Springer, 2015
Series
Lecture Notes in Computer Science, ISSN 0302-9743 ; 8965
National Category
Computer Engineering
Identifiers
urn:nbn:se:uu:diva-260975 (URN)10.1007/978-3-319-15582-1_3 (DOI)000357677300003 ()978-3-319-15581-4 (ISBN)
Conference
EWSN 2015, February 9–11, Porto, Portugal
Available from: 2015-08-28 Created: 2015-08-27 Last updated: 2018-01-11Bibliographically approved
Hewage, K., Duquennoy, S., Iyer, V. & Voigt, T. (2015). Enabling TCP in mobile cyber-physical systems. In: Proc. 12th International Conference on Mobile Ad Hoc and Sensor Systems: . Paper presented at MASS 2015, October 19–22, Dallas, TX (pp. 289-297). IEEE Computer Society
Open this publication in new window or tab >>Enabling TCP in mobile cyber-physical systems
2015 (English)In: Proc. 12th International Conference on Mobile Ad Hoc and Sensor Systems, IEEE Computer Society, 2015, p. 289-297Conference paper, Published paper (Refereed)
Abstract [en]

Cyber-physical systems consist of several wirelessly connected components such as sensors that monitor physical phenomena, computational entities that make decisions based on sensed information and actuators that interact with physical processes. Connecting cyber-physical systems to the Internet using IP protocols increases interoperability by avoiding the need for protocol translation gateways. Unfortunately, in this context TCP has been disregarded since it is known to perform poorly in wireless scenarios as it treats packet loss as an indicator for network congestion rather than poor link quality. In this paper, we use the Low-power Wireless Bus (LWB) as a link layer for TCP/IP, taking advantage of its reliability and its routing-free communication. We design a system that integrates LWB with a low-power IP stack and includes TCP-aware schedulers for LWB. We evaluate our system with experiments on real hardware using uIP, a popular embedded Internet protocol stack. Our results demonstrate high TCP throughput in mobile and static scenarios and, furthermore, show that mobility does not decrease TCP performance.

Place, publisher, year, edition, pages
IEEE Computer Society, 2015
National Category
Communication Systems
Research subject
Computer Science with specialization in Computer Communication
Identifiers
urn:nbn:se:uu:diva-266412 (URN)10.1109/MASS.2015.38 (DOI)000380548300033 ()9781467391016 (ISBN)
External cooperation:
Conference
MASS 2015, October 19–22, Dallas, TX
Available from: 2015-10-22 Created: 2015-11-09 Last updated: 2016-09-15Bibliographically approved
Tennakoon, E., Madusanka, C., De Zoysa, K., Keppitiyagama, C., Iyer, V., Hewage, K. & Voigt, T. (2015). Sensor-based Breakage Detection for Electric Fences. In: Sensors Applications Symposium (SAS): . Paper presented at Sensors Applications Symposium (SAS), Zadar, Croatia, Apr 13-15, 2015 (pp. 137-140). IEEE
Open this publication in new window or tab >>Sensor-based Breakage Detection for Electric Fences
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2015 (English)In: Sensors Applications Symposium (SAS), IEEE, 2015, p. 137-140Conference paper, Published paper (Refereed)
Abstract [en]

The human-elephant conflict is one of the most severe natural problems in Sri Lanka. There are rich farmlands near the elephant habitats and elephants raid these farms in search of food. This has been the main cause for nearly 70 human deaths and over 200 elephant deaths that have been recorded each year in the recent past. To manage the problem, the government has initiated projects that secure the national wildlife parks with electric fences. However, maintaining the electric fence is a challenge, because of its large perimeter and the lack of available manpower. A particular concern is that of locating faults in electric fences since these typically span a few hundred miles. Currently, park rangers are required to travel on foot to locate the faults, which could take days to complete. In this paper, we propose a novel system architecture that considerably shortens the maintenance time for electric fences, at minimal and hence affordable cost. Our architecture benefits the park rangers of the national wildlife sanctuaries to detect and repair the breakages.

Place, publisher, year, edition, pages
IEEE: , 2015
National Category
Computer Engineering
Research subject
Computer Science with specialization in Computer Communication
Identifiers
urn:nbn:se:uu:diva-266421 (URN)10.1109/SAS.2015.7133589 (DOI)000380510800026 ()9781479961177 (ISBN)
Conference
Sensors Applications Symposium (SAS), Zadar, Croatia, Apr 13-15, 2015
Available from: 2015-11-09 Created: 2015-11-09 Last updated: 2018-01-10Bibliographically approved
Elvitigala, C., Tennakoon, E., Hamza, A., Lokuge, Y., De Zoysa, K., Keppitiyagama, C., . . . Voigt, T. (2015). Towards a sensor system to tame the human elephant conflict. In: Sensors Applications Symposium (SAS): . Paper presented at Sensors Applications Symposium (SAS), Zadar, Croatia, Apr 13-15, 2015 (pp. 169-172). IEEE
Open this publication in new window or tab >>Towards a sensor system to tame the human elephant conflict
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2015 (English)In: Sensors Applications Symposium (SAS), IEEE, 2015, p. 169-172Conference paper, Published paper (Refereed)
Abstract [en]

The human elephant conflict in Sri Lanka has been a cause of major concern over the past decade. Frequent clashes between wild elephants and villagers have resulted in severe damage to property, as well as loss of lives for both humans and elephants. Competition for space is the primary reason for conflict between humans and elephants. Elephants that escape from the wildlife national parks venture into villages creating destruction in their wake. To prevent such mishaps, a proper system is required to contain and monitor elephants in national parks. In this paper, we describe different approaches to detect elephants and possible ways of monitoring the national wildlife parks. We also elaborate on the advantages and limitations of each approach, and determine what sort of system is needed to tame the human elephant conflict.

Place, publisher, year, edition, pages
IEEE: , 2015
National Category
Computer Engineering
Research subject
Computer Science with specialization in Computer Communication
Identifiers
urn:nbn:se:uu:diva-266422 (URN)10.1109/SAS.2015.7133595 (DOI)000380510800032 ()9781479961177 (ISBN)
Conference
Sensors Applications Symposium (SAS), Zadar, Croatia, Apr 13-15, 2015
Available from: 2015-11-09 Created: 2015-11-09 Last updated: 2018-01-10Bibliographically approved
Al Nahas, B., Duquennoy, S., Iyer, V. & Voigt, T. (2014). Low-Power Listening Goes Multi-Channel. In: 2014 IEEE INTERNATIONAL CONFERENCE ON DISTRIBUTED COMPUTING IN SENSOR SYSTEMS (IEEE DCOSS 2014): . Paper presented at 9th IEEE International Conference on Distributed Computing in Sensor Systems (DCOSS), MAY 26-28, 2014, Marina Del Rey, CA (pp. 2-9).
Open this publication in new window or tab >>Low-Power Listening Goes Multi-Channel
2014 (English)In: 2014 IEEE INTERNATIONAL CONFERENCE ON DISTRIBUTED COMPUTING IN SENSOR SYSTEMS (IEEE DCOSS 2014), 2014, p. 2-9Conference paper, Published paper (Refereed)
Abstract [en]

Exploiting multiple radio channels for communicationhas been long known as a practical way to mitigateinterference in wireless settings. In Wireless Sensor Networks,however, multichannel solutions have not reached their fullpotential: the MAC layers included in TinyOS or the ContikiOS for example are mostly single-channel. The literature offersa number of interesting solutions, but experimental results wereoften too few to build confidence. We propose a practical extensionof low-power listening, MiCMAC, that performs channel hopping,operates in a distributed way, and is independent of upper layersof the protocol stack. The above properties make it easy todeploy in a variety of scenarios, without any extra configuration/scheduling/channelselection hassle. We implement our solutionin Contiki and evaluate it in a 97-node testbed while runninga complete, out-of-the-box low-power IPv6 communication stack(UDP/RPL/6LoWPAN). Our experimental results demonstrateincreased resilience to emulated WiFi interference (e.g., data yieldkept above 90% when ContikiMAC drops in the 40% range). In noiseless environments, MiCMAC keeps the overhead low incomparison to ContikiMAC, achieving performance as high as 99% data yield along with sub-percent duty cycle and sub-secondlatency for a 1-minute inter-packet interval data collection.

Series
IEEE International Conference on Distributed Computing in Sensor Systems
Keywords
Wireless Sensor Networks
National Category
Computer Sciences
Research subject
Computer Science with specialization in Computer Communication; Computer Science with specialization in Embedded Systems; Computer Science with specialization in Real Time Systems
Identifiers
urn:nbn:se:uu:diva-237685 (URN)10.1109/DCOSS.2014.33 (DOI)000361020100002 ()
Conference
9th IEEE International Conference on Distributed Computing in Sensor Systems (DCOSS), MAY 26-28, 2014, Marina Del Rey, CA
Available from: 2014-12-03 Created: 2014-12-03 Last updated: 2018-01-11Bibliographically approved
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