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Refocusing in 802.11 Wireless Measurement [chapter]

Udayan Deshpande, Chris McDonald, David Kotz
Lecture Notes in Computer Science  
In this paper we show that refocusing is a necessary and promising new technique for wireless measurement.  ...  The edge of the Internet is increasingly wireless. To understand the Internet, one must understand the edge, and yet the measurement of wireless networks poses many new challenges.  ...  Points of view in this document are those of the authors and do not necessarily represent the official position of the U.S. Department of Homeland Security or the Science and Technology Directorate.  ... 
doi:10.1007/978-3-540-79232-1_15 dblp:conf/pam/DeshpandeMK08 fatcat:ciq7kkeamve3bnfcv5oaanfmuy

Map: a scalable monitoring system for dependable 802.11 wireless networks

Yong Sheng, Guanling Chen, Hongda Yin, Keren Tan, U. Deshpande, B. Vance, D. Kotz, A. Campbell, C. Mcdonald, T. Henderson, J. Wright
2008 IEEE wireless communications  
In this article we describe the Measure, Analyze, Protect (MAP) system for monitoring and analyzing wireless traffic on or near a campusscale wireless network.  ...  We assume that in any large-scale 802.11 infrastructure (e.g., the Dartmouth campus), the wireless traffic is concentrated in geographically distributed buildings or groups of buildings.  ... 
doi:10.1109/mwc.2008.4653127 fatcat:yhp3gxyxgvcjdpwz3m6x2e3h6m

From MAP to DIST: The Evolution of a Large-Scale WLAN Monitoring System

Keren Tan, Chris McDonald, Bennet Vance, Chrisil Arackaparambil, Sergey Bratus, David Kotz
2014 IEEE Transactions on Mobile Computing  
The edge of the Internet is increasingly becoming wireless. Therefore, monitoring the wireless edge is important to understanding the security and performance aspects of the Internet experience.  ...  In this paper, we describe our approach, designs, and solutions for addressing the technical challenges that have resulted from efficiency, scalability, security, and management perspectives.  ...  MAP includes several advanced features for WLAN measurement: AM feature extraction, AM channel sampling and refocusing, and multisource trace merging.  ... 
doi:10.1109/tmc.2012.237 fatcat:as64hjhvxfgy3muzl7lv37wtou

Laser Based Energy Distribution Architecture for Decoupling Energy and Sensing Planes in WSN

Naveed Anwar Bhatti, Affan A. Syed, Muhammad Hamad Alizai
2015 International Journal of Distributed Sensor Networks  
We propose decoupling energy and sensing planes in WSN.  ...  This decoupling represents a paradigm shift as it can alleviate the fundamental problem of energy depletion in WSN and can (in theory) offer a sensor network with infinite lifetime.  ...  Figure 12 (b) shows the measured transition taking 680 ms (i.e., max. refocusing time), implying that it takes 3.78 ms for a single degree of movement.  ... 
doi:10.1155/2015/526858 fatcat:5ssulkxwyjdf3gmg5ikhtgl4ti

Sensors with lasers: Building a WSN power grid

Naveed Anwar Bhatti, Affan A. Syed, Muhammad Hamad Alizai
2014 IPSN-14 Proceedings of the 13th International Symposium on Information Processing in Sensor Networks  
We present here a first practical energy distribution architecture that allows us to decouple energy supply from sensing activities in WSN.  ...  We evaluate our system to show that, for an additional cost of $29 per mote, LAMP can support perpetual mesh functionality for up to 40 sensors or 120 nodes in clustered operation.  ...  We would like to thank and acknowledge Ali Khayam and Adnan Iqbal, who were involved in earlier insightful discussions on decoupling energy and sensing planes in WSN.  ... 
doi:10.1109/ipsn.2014.6846758 fatcat:fd4xuffyjjdqrpanpjx67icqjy

Why Time Reversal for Future 5G Wireless? [Perspectives]

Yan Chen, Beibei Wang, Yi Han, Hung-Quoc Lai, Zoltan Safar, K.J. Ray Liu
2016 IEEE Signal Processing Magazine  
We are also grateful to Min Wu, SPM's current editor-in-chief, for her support.  ...  We thank all authors who submitted proposals and all reviewers whose recommendations significantly helped in improving the selected articles.  ...  measurements in a typical indoor environment, we compare the energy efficiency of a TR system with that of a direct transmission system without TR.  ... 
doi:10.1109/msp.2015.2506347 fatcat:53gj3aa5yzgjphkvyj6maalio4

Design and Experiments with a Robot-Driven Underwater Holographic Microscope for Low-Cost In Situ Particle Measurements [article]

Kevin Mallery, Dario Canelon, Jiarong Hong, Nikolaos Papanikolopoulos
2019 arXiv   pre-print
A miniature underwater digital in-line holographic microscope (DIHM) performs high resolution imaging of microparticles (e.g., algae cells, plastic debris, sediments) while movement allows measurement  ...  Microscopic analysis of micro particles in situ in diverse water environments is necessary for monitoring water quality and localizing contamination sources.  ...  Charging and data transfer are performed using an Qi inductive charging pad and 802.11 wireless connection.  ... 
arXiv:1911.10231v1 fatcat:agy26ieterbfxmeo7xvkxctnky

Time-Reversal Wireless Paradigm for Green Internet of Things: An Overview

Yan Chen, Feng Han, Yu-Han Yang, Hang Ma, Yi Han, Chunxiao Jiang, Hung-Quoc Lai, David Claffey, Zoltan Safar, K. J. Ray Liu
2014 IEEE Internet of Things Journal  
In this paper, we present an overview of the timereversal (TR) wireless paradigm for green Internet of Things (IoT).  ...  devices in IoT.  ...  In the RF domain, experiments in [39] , [40] , and [46] demonstrated the spatial and temporal focusing properties of EM signal transmission with TR by taking measurements in RF communications.  ... 
doi:10.1109/jiot.2014.2308838 fatcat:4ka5u7jy4ja2zfarj5jzqh5csq

Economic Experiments and Neutrality in Internet Access

Shane Greenstein
2007 Innovation Policy and the Economy  
Subcommittee 802.11 was established in 1990.  ...  In general, many of these benefits cannot be measured.  ... 
doi:10.1086/ipe.8.25056199 fatcat:rsqfi4r4ejavfpimzjtm4osi34

A Comparative Survey of Optical Wireless Technologies: Architectures and Applications

Mostafa Zaman Chowdhury, Md. Tanvir Hossan, Amirul Islam, Yeong Min Jang
2018 IEEE Access  
It has attracted growing research interest worldwide in the last decade for indoor and outdoor applications. OWC offloads huge data traffic applications from RF networks.  ...  We survey the key technologies for understanding OWC and present state-of-the-art criteria in aspects, such as classification, spectrum use, architecture, and applications.  ...  Then, the light beam is collected and refocused by means of beam forming optics before being transmitted [37] . The typical optical source in FSO systems is an LD [52] .  ... 
doi:10.1109/access.2018.2792419 fatcat:wlvbsm5qzncjnjiaao3k55vysu

Next Generation Auto-Identification and Traceability Technologies for Industry 5.0: A Methodology and Practical Use Case for the Shipbuilding Industry

Paula Fraga-Lamas, Jose Varela-Barbeito, Tiago M. Fernandez-Carames
2021 IEEE Access  
For example, while Tables 2 and 3 include Wi-Fi 6, some authors have already anticipated the novel features of Wi-Fi 7 (IEEE 802.11 be) [63] or Wi-Fi sensing (IEEE 802.11 bf [64] ).  ...  For such a reason, the vast majority of the technologies in Tables 2 and 3 are wireless, but it should be noted that wireless technologies present other challenges that will be identified in the next  ... 
doi:10.1109/access.2021.3119775 fatcat:oain4hs3r5dldj6bz3pvydryaq

Imagine All the Plants: Evaluation of a Light-Field Camera for On-Site Crop Growth Monitoring

Robert Schima, Hannes Mollenhauer, Görres Grenzdörffer, Ines Merbach, Angela Lausch, Peter Dietrich, Jan Bumberger
2016 Remote Sensing  
Linked to this, the measurement of changes in the external structure and phytomorphology of plants is of particular interest.  ...  This strongly confirms and endorses the assumption that the light-field camera presented in this study has the potential to be a light-weight and easy to use measurement tool for on-site environmental  ...  See more in the LYTRO Desktop Fact Sheet Wireless 802.11 b/g/n, Wi-Fi Protected Access (WPA2) E-Waste RoHS certified (Restriction of Hazardous Substances Directive 2002/95/EC) Materials Lightweight  ... 
doi:10.3390/rs8100823 fatcat:q7yaohaapvfzlmhsefjb7cbbya

Behavior Rule Specification-Based Intrusion Detection for Safety Critical Medical Cyber Physical Systems

Robert Mitchell, Ing-Ray Chen
2015 IEEE Transactions on Dependable and Secure Computing  
We propose and analyze a behavior-rule specification-based technique for intrusion detection of medical devices embedded in a medical cyber physical system (MCPS) in which the patient's safety is of the  ...  Moreover, through a comparative analysis, we demonstrate that our behavior-rule specificationbased IDS technique outperforms two existing anomaly-based techniques for detecting abnormal patient behaviors in  ...  However, the VSM we consider in depth uses wireless communication.  ... 
doi:10.1109/tdsc.2014.2312327 fatcat:zxq4sedh25ff7ocwpp64d4tsmi

Survey of QoS Routing Protocols in Wireless Multimedia Sensor Networks

Shailendra Aswale, Vijay R. Ghorpade
2015 Journal of Computer Networks and Communications  
The emergence of Wireless Multimedia Sensor Networks (WMSNs) has stimulated the refocusing of research from conventional scalar Wireless Sensor Networks (WSNs) to WMSNs.  ...  Currently, because of their prevalence WMSNs are used in different applications.  ...  As defined in 802.11s, it uses RM-AODV for path selection [70] .  ... 
doi:10.1155/2015/824619 fatcat:5ojdsvgtxbf23l3le6xtlxcbgm

D5.3 - End User Validation

Christian Löw, Albert Rafetseder, Svenja Schröder, Aleksandar Antonić, Luca De Santis, Gerhard Duennebeil, Mario Drobics, Karl Kreiner, Kurt Edegger, Reinhard Herzog, Michael Jacoby, Adam Olszewski (+1 others)
2018 Zenodo  
The system utilizes fingerprints from various wireless network infrastructures including 3GPP-standard mobile network, 802.11 Wireless LAN and Bluetooth (BLE) beacons to determine physical position by  ...  This walk-through test predefines the route taken and defines measurement position on which the difference between the actual position and one offered by the application is evaluated. 11 In-building wireless  ...  Smart Mobility and Ecological Routing Use Case This subsection describes additional details for the SMER validation performed in Zagreb during campaign of collecting air quality measurements and user routing  ... 
doi:10.5281/zenodo.1571402 fatcat:c7ila5igmfgybmildxfygavnxe
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