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Passive Wi-Fi: Bringing Low Power to Wi-Fi Transmissions

Bryce Kellogg, Vamsi Talla, Shyamnath Gollakota, Joshua R. Smith
2016 Symposium on Networked Systems Design and Implementation  
Passive Wi-Fi transmissions can be decoded on any Wi-Fi device including routers, mobile phones and tablets.  ...  This translates to 10000x lower power than existing Wi-Fi chipsets and 1000x lower power than Bluetooth LTE and ZigBee.  ...  Using an IoT Wi-Fi chipset from Gainspan or TI, brings the total power consumption of the system to 680 mW.  ... 
dblp:conf/nsdi/KelloggTGS16 fatcat:4hsqjj3yvbbz5ois4bxxtzxo4q

PASSIVE WI-FI

Bryce Kellogg, Vamsi Talla, Joshua R. Smith, Shyamnath Gollakot
2017 GetMobile Mobile Computing and Communications  
Passive Wi-Fi transmissions can be decoded on any Wi-Fi device including routers, mobile phones and tablets.  ...  This translates to 10000x lower power than existing Wi-Fi chipsets and 1000x lower power than Bluetooth LTE and ZigBee.  ...  Using an IoT Wi-Fi chipset from Gainspan or TI, brings the total power consumption of the system to 680 mW.  ... 
doi:10.1145/3036699.3036711 fatcat:eju2x6vj4zakdhmxj2pnnbnzbu

Passive Classification of Wi-Fi Enabled Devices

Alessandro Enrico Cesare Redondi, Davide Sanvito, Matteo Cesana
2016 Proceedings of the 19th ACM International Conference on Modeling, Analysis and Simulation of Wireless and Mobile Systems - MSWiM '16  
We propose a method for classifying Wi-Fi enabled mobile handheld devices (smartphones) and non-handheld devices (laptops) in a completely passive way, that is resorting neither to traffic probes on network  ...  The proposed methodology finds application in many scenarios related to Wi-Fi network management/optimization and Wi-Fi based services.  ...  Such frames are transmitted in-the-clear by any Wi-Fi enabled device to requests information from in-range access points, can be captured with almost any low-cost commercially available Wi-Fi interface  ... 
doi:10.1145/2988287.2989161 dblp:conf/mswim/RedondiSC16 fatcat:5527bwkky5gj7b6fz2d6vjtetu

Wi-fi backscatter

Bryce Kellogg, Aaron Parks, Shyamnath Gollakota, Joshua R. Smith, David Wetherall
2014 Proceedings of the 2014 ACM conference on SIGCOMM - SIGCOMM '14  
Specifically, we show that it is possible to reuse existing Wi-Fi infrastructure to provide Internet connectivity to RF-powered devices.  ...  To show Wi-Fi Backscatter's feasibility, we build a hardware prototype and demonstrate the first communication link between an RF-powered device and commodity Wi-Fi devices.  ...  We would like to thank Ben Ransford, Vincent Liu, Rajalakshmi Nandakumar, Donny Huang, our shepherd Kyle Jamieson, and the anonymous SIGCOMM reviewers for their helpful comments.  ... 
doi:10.1145/2619239.2626319 dblp:conf/sigcomm/KelloggPGSW14 fatcat:46mlem3mujaznidop6ukwqh6zq

Wi-fi backscatter

Bryce Kellogg, Aaron Parks, Shyamnath Gollakota, Joshua R. Smith, David Wetherall
2014 Computer communication review  
Specifically, we show that it is possible to reuse existing Wi-Fi infrastructure to provide Internet connectivity to RF-powered devices.  ...  To show Wi-Fi Backscatter's feasibility, we build a hardware prototype and demonstrate the first communication link between an RF-powered device and commodity Wi-Fi devices.  ...  We would like to thank Ben Ransford, Vincent Liu, Rajalakshmi Nandakumar, Donny Huang, our shepherd Kyle Jamieson, and the anonymous SIGCOMM reviewers for their helpful comments.  ... 
doi:10.1145/2740070.2626319 fatcat:uiiezhkz6zfjvl4dt7xzd7jm5a

Wi-Fi could be much more

Weiping Sun, Okhwan Lee, Yeonchul Shin, Seongwon Kim, Changmok Yang, Hyoil Kim, Sunghyun Choi
2014 IEEE Communications Magazine  
Wi-Fi has become an essential wireless technology in our daily lives, although the original intention of its introduction was to replace the Ethernet cable.  ...  By stitching these advanced features together, we also envision a promising future that Wi-Fi technology will bring us in terms of the spectrum heterogeneity, seamless service provisioning, and possible  ...  The SC PHY is suitable for low-power mobile devices by virtue of its low power consumption.  ... 
doi:10.1109/mcom.2014.6957139 fatcat:xca65xwlpfdh5lg2jvj2rspwvi

Detecting Soil Moisture Levels Using Battery-Free Wi-Fi Tag [article]

Wenli Jiao, Ju Wang, Yelu He, Xiangdong Xi, Xiaojiang Chen
2022 arXiv   pre-print
Existing soil sensing methods failed to achieve both high accuracy and low cost.  ...  Based on this principle, we design a battery-free passive tag which can respond to different soil-moisture.  ...  Passive Wi-Fi Tag Design In this section, we detail the design of our passive Wi-Fi tag for soil moisture sensing.  ... 
arXiv:2202.03275v1 fatcat:2s32try4njc6hd4qv7u6eearca

A New Game for Future Wi-Fi Spectrum Sharing

Tomas Cuzanauskas, Yoram Haddad
2017 Elektronika ir Elektrotechnika  
1 Abstract-This article offers a vision for moving on from the paradigm of "constrained politeness" that has long governed Wi-Fi access to a shared spectrum -as embodied by the CSMA/CA mechanism and restricted  ...  Most importantly, the new spectrum access would be still implicitly suitable for the Wi-Fi ethos of self-management and uncoordinated deployment.  ...  Wi-Fi uses adaptive modulation and coding scheme that makes its packet reception highly tolerant of noise and link gain fluctuations, allowing packets to be demodulated at low signal to noise ratios.  ... 
doi:10.5755/j01.eie.23.3.18339 fatcat:i6comgjwbfgd5nh2wtlb6kwk2a

Wi-Fi Direct Performance Evaluation for V2P Communications

Thales Teixeira de Almeida, José Geraldo Ribeiro Júnior, Miguel Elias M. Campista, Luís Henrique M. K. Costa
2020 Journal of Sensor and Actuator Networks  
As an outcome of this observation, we evaluate a new transmission method for Wi-Fi Direct based on beacon stuffing, which mitigates the long connection establishment issue.  ...  Nevertheless, given the complexity of real experimentation, it is difficult to assess the ability of Wi-Fi Direct to offer connectivity in the vehicular environment on a large scale, leading to the evaluation  ...  Acknowledgments: The authors would like to thank the municipality of Leopoldina-MG, Brazil, for allowing the real experiments to be carried out at the deactivated airport located in this city.  ... 
doi:10.3390/jsan9020028 fatcat:ubfegz3m6nf6pjlnxrxbtci52e

Design and Security Simulation of Wi-Fi Networks

Shaldon Leparan Suntu, Obadia Kyetuza Bishoge
2017 International Journal of Computer Networks And Applications  
Design and security of these networks for an organization need to be considered to ensure mobility is accomplished.  ...  Opportunistic key caching which is preferred by many vendors was used transit the session information from the posterior access point to the prior access point to minimize the hand-off latency to allow  ...  In day-to-day operation of an enterprise, Wi-Fi is deployed to guarantee mobility and broaden the Wi-Fi coverage cell.  ... 
doi:10.22247/ijcna/2017/49249 fatcat:dye2ccih3ne3xe7wa5loba5nvm

SSID Oracle Attack on Undisclosed Wi-Fi Preferred Network Lists

Ante Dagelić, Toni Perković, Bojan Vujatović, Mario Čagalj
2018 Wireless Communications and Mobile Computing  
User's location privacy concerns have been further raised by today's Wi-Fi technology omnipresence.  ...  Nowadays, however, more and more devices no longer transmit their PNL in clear, thus mitigating passive attacks.  ...  Furthermore, we also created a simulator to cover more complex attack scenarios with low Wi-Fi channel quality.  ... 
doi:10.1155/2018/5153265 fatcat:srmvgvn3dzfutcmo3oaitrg3ji

Detection of Misconfigured BYOD Devices in Wi-Fi Networks

Jaehyuk Choi
2020 Applied Sciences  
As Bring Your Own Device (BYOD) policy has become widely accepted in the enterprise, anyone with a mobile device that supports Wi-Fi tethering can provide an active wireless Internet connection to other  ...  Subsequently, an online detection scheme diagnoses the network condition and detects selfish tethering devices by passively exploiting the packet loss information of on-going transmissions.  ...  Introduction Bring Your Own Device (BYOD), which refers to a policy of permitting employees to bring their personal devices to the workplace and to use those devices by connecting them to the internal  ... 
doi:10.3390/app10207203 fatcat:iqfkgnxeebcrpehpyrkp6hk5vm

White space networking with wi-fi like connectivity

Paramvir Bahl, Ranveer Chandra, Thomas Moscibroda, Rohan Murty, Matt Welsh
2009 Proceedings of the ACM SIGCOMM 2009 conference on Data communication - SIGCOMM '09  
We present the design and implementation of WhiteFi, the first Wi-Fi like system constructed on top of UHF white spaces.  ...  WhiteFi incorporates a new adaptive spectrum assignment algorithm to handle spectrum variation and fragmentation, and proposes a low overhead protocol to handle temporal variation.  ...  We are also grateful to the anonymous SIGCOMM reviewers for their insightful comments.  ... 
doi:10.1145/1592568.1592573 dblp:conf/sigcomm/BahlCMMW09 fatcat:skg3eeur7vazrh5rk74nvaukza

White space networking with wi-fi like connectivity

Paramvir Bahl, Ranveer Chandra, Thomas Moscibroda, Rohan Murty, Matt Welsh
2009 Computer communication review  
We present the design and implementation of WhiteFi, the first Wi-Fi like system constructed on top of UHF white spaces.  ...  WhiteFi incorporates a new adaptive spectrum assignment algorithm to handle spectrum variation and fragmentation, and proposes a low overhead protocol to handle temporal variation.  ...  We are also grateful to the anonymous SIGCOMM reviewers for their insightful comments.  ... 
doi:10.1145/1594977.1592573 fatcat:sav4lhkynndvfejhwy5bury234

On Practical Aspects of Mobile Data Offloading to Wi-Fi Networks [article]

Adnan Aijaz, Nazir Uddin, Oliver Holland, A. Hamid Aghvami
2015 arXiv   pre-print
Though offloading to Wi-Fi networks has matured over the years, a number of challenges are still being faced by operators to its realization.  ...  This increase in data traffic demand has led to a need for solutions to enhance capacity provision, whereby traffic offloading to Wi-Fi is one means that can enhance realised capacity.  ...  Regulatory Constraints Regulatory aspects drive the adoption of Wi-Fi as an offloading solution especially on the transmission power restrictions.  ... 
arXiv:1508.01926v1 fatcat:gdjh7ferzfakdnpnvat3gquke4
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