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Optimizing Relocatable Code for Efficient Software Update in Networked Embedded Systems
Wei Dong, Chun Chen, Jiajun Bu, Wen Liu
Article No.: 22
Recent advances in Microelectronic Mechanical Systems (MEMS) and wireless communication technologies have fostered the rapid development of networked embedded systems like wireless sensor networks. System software for these self-organizing systems...
Long-term sensor network deployments demand careful power management. While managing power requires understanding the amount of energy harvestable from the local environment, current solar prediction methods rely only on recent local history,...
ECPC: Toward Preserving Downtime Data Persistence in Disruptive Wireless Sensor Networks
Wen-Zhan Song, Mingsen Xu, Debraj De, Deukhyoun Heo, Jong-Hoon Kim, Byeong-Sam Kim
Article No.: 24
Sensor networks have particularly important applications in challenging environments. However, those challenging environments also pose significant challenges to network sustainability and reliability. In such environments, the network often...
Bringing Modern Unit Testing Techniques to Sensornets
Konrad Iwanicki, Przemyslaw Horban, Piotr Glazar, Karol Strzelecki
Article No.: 25
Unit testing, an important facet of software quality assurance, is underappreciated by wireless sensor network (sensornet) developers. This is likely because our tools lag behind the rest of the computing field. As a remedy, we present a new...
In-situ Soil Moisture Sensing: Measurement Scheduling and Estimation Using Sparse Sampling
Xiaopei Wu, Qingsi Wang, Mingyan Liu
Article No.: 26
We consider the problem of monitoring soil moisture evolution using a wireless network of in-situ underground sensors. To reduce cost and prolong lifetime, it is highly desirable to rely on fewer measurements and estimate with higher accuracy the...
Error Saturation Nonlinearities for Robust Incremental LMS over Wireless Sensor Networks
Trilochan Panigrahi, Ganapati Panda, Bernard Mulgrew
Article No.: 27
The data collected by sensor nodes over a geographical region is contaminated with Gaussian and impulsive noise. The conventional gradient-based distributed adaptive estimation algorithms exhibit good performance in the presence of Gaussian noise...
The location and context switching, especially the indoor/outdoor switching, provides essential and primitive information for upper-layer mobile applications. In this article, we present IODetector: a lightweight sensing service that runs on the...
Mixing in Random Digraphs with Application to the Forward-Secure Key Evolution in Wireless Sensor Networks
Marek Klonowski, Mirosław Kutyłowski, Michał Ren, Katarzyna Rybarczyk
Article No.: 29
A key distribution scheme for wireless sensor networks based on a system of dynamic, pairwise keys is considered. In the scheme, each pair of communicating nodes shares pairwise symmetric keys and changes them at every transmission using a set of...
A Sensor System for High-Fidelity Temperature Distribution Forecasting in Data Centers
Jinzhu Chen, Rui Tan, Yu Wang, Guoliang Xing, Xiaorui Wang, Xiaodong Wang, Bill Punch, Dirk Colbry
Article No.: 30
Data centers have become a critical computing infrastructure in the era of cloud computing. Temperature monitoring and forecasting are essential for preventing server shutdowns because of overheating and improving a data center’s energy...
Resilient Round Robin: A Lightweight Deterministic MAC Primitive
Vahid Salmani, Pai H. Chou
Article No.: 31
We consider the goal of adaptively controlling access to medium in wireless sensor networks with minimal footprint and complexity. Lightweight protocols are desirable in general and inevitable in some real-world applications such as infant...
A Framework for Dynamic Composition of Communication Services
Carolina Fortuna, Mihael Mohorcic
Article No.: 32
We propose a framework for dynamic composition of communication services that is well suited for facilitating research and prototyping on real experimental infrastructures of remotely configurable embedded devices. By using the concept of...
Troubleshooting unresponsive sensor nodes is a significant challenge in remote sensor network deployments. While prior work often targets low-end sensor networks, this article introduces a novel diagnostic tool, called the telediagnostic...
A Distributed Reconfiguration Approach for Quality-of-Service Provisioning in Dynamic Heterogeneous Wireless Sensor Networks
Marcel Steine, Marc Geilen, Twan Basten
Article No.: 34
Wireless Sensor Networks (WSNs) are commonly deployed in dynamic environments where events, such as moving sensor nodes and changing external interference, impact the performance, or Quality of Service (QoS), of the network. QoS is expressed by...
Error/Erasure-Resilient and Complexity-Constrained Zero-Delay Distributed Coding for Large-Scale Sensor Networks
Kumar Viswanatha, Sharadh Ramaswamy, Ankur Saxena, Kenneth Rose
Article No.: 35
There has been considerable interest in distributed source coding (DSC) in recent years, primarily due to its potential contributions to low-power sensor networks. However, two major obstacles pose an existential threat to practical deployment of...
Optimal Radius for Connectivity in Duty-Cycled Wireless Sensor Networks
Amitabha Bagchi, Sainyam Galhotra, Tarun Mangla, Cristina M. Pinotti
Article No.: 36
We investigate the condition on transmission radius needed to achieve connectivity in duty-cycled wireless sensor networks (briefly, DC-WSNs). First, we settle a conjecture of Das et al.  and prove that the connectivity condition on random...
Wireless Fingerprints Inside a Wireless Sensor Network
D. A. Knox, T. Kunz
Article No.: 37
We discriminate between different SiLabs IEEE 802.15.4 2.4GHz RF sources using the Ettus Labs USRP1 Software-Defined Radio. The wireless fingerprinting method implemented on the USRP1 device exploits differences in the phase attributes of...
Not Every Bit Counts: Data-Centric Resource Allocation for Correlated Data Gathering in Machine-to-Machine Wireless Networks
Hung-Yun Hsieh, Chih-Hua Chang, Wei-Chih Liao
Article No.: 38
Many applications involving machine-to-machine (M2M) communications are characterized by the large amount of data to transport. To support these M2M applications, we argue in this article that instead of focusing on serving individual machines...
DualMOP-RPL: Supporting Multiple Modes of Downward Routing in a Single RPL Network
Jeonggil Ko, Jongsoo Jeong, Jongjun Park, Jong Arm Jun, Omprakash Gnawali, Jeongyeup Paek
Article No.: 39
RPL is an IPv6 routing protocol for low-power and lossy networks (LLNs) designed to meet the requirements of a wide range of LLN applications including smart grid AMIs, home and building automation, industrial and environmental monitoring, health...