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Towards Energy-Fairness in Asynchronous Duty-Cycling Sensor Networks
Zhenjiang Li, Mo Li, Yunhao Liu
Article No.: 38
In this article, we investigate the problem of controlling node sleep intervals so as to achieve the min-max energy fairness in asynchronous duty-cycling sensor networks. We propose a mathematical model to describe the energy efficiency of such...
Leveraging Human Mobility for Communication in Body Area Networks
Article No.: 39
When a person is walking the RF signal strength of an on-body communication link may exhibit significant fluctuation with peak-to-peak amplitudes beyond 20 dB. Instantaneous signal strength may be noisy, but the smoothed signal typically exhibits...
Wireless Sensor Networks (WSN) promise researchers a powerful instrument for observing sizable phenomena with fine granularity over long periods. Since the accuracy of data is important to the whole system's performance, detecting nodes with...
Convex Partitioning of Large-Scale Sensor Networks in Complex Fields: Algorithms and Applications
Guang Tan, Hongbo Jiang, Jun Liu, Anne-Marie Kermarrec
Article No.: 41
When a sensor network grows large, or when its topology becomes complex (e.g., containing many holes), network algorithms designed with a smaller or simpler setting in mind may be rendered rather inefficient. We propose to address this problem...
Occupancy Modeling and Prediction for Building Energy Management
Varick L. Erickson, Miguel Á. Carreira-Perpiñán, Alberto E. Cerpa
Article No.: 42
Heating, cooling and ventilation accounts for 35% energy usage in the United States. Currently, most modern buildings still condition rooms assuming maximum occupancy rather than actual usage. As a result, rooms are often over-conditioned...
A Cooperative MIMO Framework for Wireless Sensor Networks
Diep N. Nguyen, Marwan Krunz
Article No.: 43
We explore the use of cooperative multi-input multi-output (MIMO) communications to prolong the lifetime of a wireless sensor network (WSN). Single-antenna sensor nodes are clustered into virtual antenna arrays that can act as virtual MIMO (VMIMO)...
Wireless sensor networks for industrial process monitoring and control require highly reliable and timely data delivery. To match performance requirements, specialised schedule based medium access control (MAC) protocols are employed. In order to...
Dynamic Networked Coverage of Time-Varying Environments in the Presence of Fading Communication Channels
Alireza Ghaffarkhah, Yasamin Mostofi
Article No.: 45
In this article, we study the problem of dynamic coverage of a set of points of interest (POIs) in a time-varying environment. We consider the scenario where a physical quantity is constantly growing at certain rates at the POIs. A number of...
Temporal Adaptive Link Quality Prediction with Online Learning
Tao Liu, Alberto E. Cerpa
Article No.: 46
Link quality estimation is a fundamental component of the low-power wireless network protocols and is essential for routing protocols in Wireless Sensor Networks (WSNs). However, accurate link quality estimation remains a challenging task due to...
A problem is introduced in which a moving body (robot, human, animal, vehicle, and so on) travels among obstacles and binary detection beams that connect between obstacles or barriers. Each beam can be viewed as a virtual sensor that may have many...
Efficient Solutions Framework for Optimal Multitask Resource Assignments for Data Fusion in Wireless Sensor Networks
Srikanth Hariharan, Chatschik Bisdikian, Lance M. Kaplan, Tien Pham
Article No.: 48
Motivated by the need to judiciously allocate scarce sensing resources to attain the highest benefit for the applications that sensor networks serve, in this article we develop a flexible solutions methodology for maximizing the overall reward...
Defending against Frequency-Based Attacks on Distributed Data Storage in Wireless Networks
Hongbo Liu, Hui Wang, Yingying Chen, Dayong Jia
Article No.: 49
As wireless networks become more pervasive, the amount of the wireless data is rapidly increasing. One of the biggest challenges of wide adoption of distributed data storage is how to store these data securely. In this work, we study the...
Surface-Reflection-Based Communication and Localization in Underwater Sensor Networks
Lloyd Emokpae, Mohamed Younis
Article No.: 50
Most communication and localization algorithms in underwater environments have been constrained by dependencies on the Line Of Sight (LOS), which is hard to guarantee due to the inherent node mobility. This constraint hinders node discovery and ad...
In this article, we address a new unexplored problem: what are the optimal patterns to achieve connected coverage in wireless networks with directional antennas. As their name implies, directional antennas can focus their transmission energy in a...
Real-world, long-running wireless sensor networks (WSNs) require intense user intervention in the development, hardware testing, deployment, and maintenance stages. A majority of network design is network centric and focuses primarily on network...
Topology-Related Metrics and Applications for the Design and Operation of Wireless Sensor Networks
Heitor S. Ramos, Alejandro C. Frery, Azzedine Boukerche, Eduardo M. R. Oliveira, Antonio A. F. Loureiro
Article No.: 53
The use of topological features, more specifically, the importance of an element related to its structural position, is a subject widely studied in the literature. For instance, the theory of complex networks provides centrality measures that have...