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Minimum transmission power configuration in real-time sensor networks with overlapping channels
Xiaodong Wang, Xiaorui Wang, Guoliang Xing, Yanjun Yao
Article No.: 10
Multi-channel communications can effectively reduce channel competition and interference in a wireless sensor network and thus achieve increased throughput and improved end-to-end delay guarantees with reduced power consumption. However, existing...
Energy-efficient data redistribution in sensor networks
Bin Tang, Neeraj Jaggi, Haijie Wu, Rohini Kurkal
Article No.: 11
We address the energy-efficient data redistribution problem in data-intensive sensor networks (DISNs). In a DISN, a large volume of data gets generated, which is first stored in the network and is later collected for further analysis when the next...
Behavior-oriented data resource management in medical sensing systems
Hyduke Noshadi, Foad Dabiri, Saro Meguerdichian, Miodrag Potkonjak, Majid Sarrafzadeh
Article No.: 12
Wearable sensing systems have recently enabled a variety of medical monitoring and diagnostic applications in wireless health. The need for multiple sensors and constant monitoring leads these systems to be power hungry and expensive with short...
Modeling and stability analysis of hybrid multiple access in the IEEE 802.15.4 protocol
Pangun Park, Carlo Fischione, Karl Henrik Johansson
Article No.: 13
To offer flexible quality of service to several classes of applications, the medium access control (MAC) protocol of IEEE 802.15.4 wireless sensor networks (WSNs) combines the advantages of a random access with contention with a time division...
Optimizing sensor network reprogramming via in situ reconfigurable components
Amir Taherkordi, Frederic Loiret, Romain Rouvoy, Frank Eliassen
Article No.: 14
Wireless reprogramming of sensor nodes is a critical requirement in long-lived wireless sensor networks (WSNs) addressing several concerns, such as fixing bugs, upgrading the operating system and applications, and adapting applications behavior...
Surface-level path loss modeling for sensor networks in flat and irregular terrain
Poh Kit Chong, Daeyoung Kim
Article No.: 15
Many wireless sensor network applications require sensor nodes to be deployed on the ground or other surfaces. However, there has been little effort to characterize the large- and small-scale path loss for surface-level radio communications. We...
Object tracking in the presence of occlusions using multiple cameras: A sensor network approach
Ali O. Ercan, Abbas El Gamal, Leonidas J. Guibas
Article No.: 16
This article describes a sensor network approach to tracking a single object in the presence of static and moving occluders using a network of cameras. To conserve communication bandwidth and energy, we combine a task-driven approach with camera...
Volcano monitoring is of great interest to public safety and scientific explorations. However, traditional volcanic instrumentation such as broadband seismometers are expensive, power hungry, bulky, and difficult to install. Wireless sensor...
The body area network (BAN) is a key enabling technology in e-healthcare. An important security issue is to establish initial trust relationships among the BAN devices before they are actually deployed and generate necessary shared secret keys to...
Packet-level attestation (PLA): A framework for in-network sensor data reliability
Abu Raihan M. Kamal, Chris Bleakley, Simon Dobson
Article No.: 19
Wireless sensor networks (WSN) show enormous potential for collection and analysis of physical data in real-time. Many papers have proposed methods for improving the network reliability of WSNs. However, real WSN deployments show that sensor...
This study presents several extensions to our previous work on the PipeProbe system, a mobile sensor system for identifying the spatial topology of hidden water pipelines (i.e., non-moldable pipes such as copper and PVC) behind walls or under...
A low-bandwidth camera sensor platform with applications in smart camera networks
Phoebus Chen, Kirak Hong, Nikhil Naikal, S. Shankar Sastry, Doug Tygar, Posu Yan, Allen Y. Yang, Lung-Chung Chang, Leon Lin, Simon Wang, Edgar Lobatón, Songhwai Oh, Parvez Ahammad
Article No.: 21
Smart camera networks have recently emerged as a new class of sensor network infrastructure that is capable of supporting high-power in-network signal processing and enabling a wide range of applications. In this article, we provide an exposition...
Providing field coverage is a key task in many sensor network applications. With unevenly distributed static sensors, quality coverage with acceptable network lifetime is often difficult to achieve. Fortunately, recent advances on embedded and...
Energy-efficient localization: GPS duty cycling with radio ranging
Raja Jurdak, Peter Corke, Alban Cotillon, Dhinesh Dharman, Chris Crossman, Guillaume Salagnac
Article No.: 23
GPS is a commonly used and convenient technology for determining absolute position in outdoor environments, but its high power consumption leads to rapid battery depletion in mobile devices. An obvious solution is to duty cycle the GPS module,...
Robust localization against outliers in wireless sensor networks
Qingjun Xiao, Kai Bu, Zhijun Wang, Bin Xiao
Article No.: 24
In wireless sensor networks, a critical system service is the localization service that determines the locations of geographically distributed sensor nodes. The raw data used by this service are the distance measurements between neighboring nodes...
SenseCode: Network coding for reliable sensor networks
Lorenzo Keller, Emre Atsan, Katerina Argyraki, Christina Fragouli
Article No.: 25
Designing a communication protocol for sensor networks often involves obtaining the right trade-off between energy efficiency and end-to-end packet error rate. In this article, we show that network coding provides a means to elegantly balance...
Beyond triangle inequality: Sifting noisy and outlier distance measurements for localization
Zheng Yang, Lirong Jian, Chenshu Wu, Yunhao Liu
Article No.: 26
Knowing accurate positions of nodes in wireless ad hoc and sensor networks is essential for a wide range of pervasive and mobile applications. However, errors are inevitable in distance measurements and we observe that a small number of outliers...
Tones for real: Managing multipath in underwater acoustic wakeup
Affan A. Syed, John Heidemann, Wei Ye
Article No.: 27
The principles of sensor networks—low-power, wireless, in-situ sensing with many inexpensive sensors—are only recently penetrating into underwater research. Acoustic communication is best suited for underwater communication, with much...