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Božidar Radunović, Ranveer Chandra, Dinan Gunawardena
2012 Proceedings of the 8th international conference on Emerging networking experiments and technologies - CoNEXT '12  
One of the key distinctive requirements of white-space networks is the power asymmetry. Static nodes are allowed to transmit with 15dB-20dB higher power than mobile nodes.  ...  One of the key building blocks is an adaptive preamble support, an add-on to the PHY layer that allows high-power nodes to detect a low-power transmission even when the difference in transmit power is  ...  The database is not used to allocate spectrum to (low or high power) white-space nodes, but only to prevent them from interfering with the incumbents.  ... 
doi:10.1145/2413176.2413201 dblp:conf/conext/RadunovicCG12 fatcat:gaaubnelsjainkskvhucelddsu

Bridging link power asymmetry in mobile whitespace networks

Sanjib Sur, Xinyu Zhang
2015 2015 IEEE Conference on Computer Communications (INFOCOM)  
Our measurements reveal that the power asymmetry not only causes severe uplink blackouts but also poses significant coexistence problems, as high-power fixed nodes can easily starve the low-power mobile  ...  We explore the use of TV White Space (TVWS) wireless networks for providing robust and long range connectivity to vehicles.  ...  ACKNOWLEDGEMENT The work reported in this paper was supported in part by the NSF under Grant CNS-1318292, CNS-1343363, CNS-1350039 and CNS-1404613.  ... 
doi:10.1109/infocom.2015.7218492 dblp:conf/infocom/SurZ15 fatcat:jlct6p6w2vgoncqohmuquodqn4

ZigBee vs WiFi: Understanding issues and measuring performances of their coexistence

Zenghua Zhao, Xuanxuan Wu, Xin Zhang, Jing Zhao, Xiang-Yang Li
2014 2014 IEEE 33rd International Performance Computing and Communications Conference (IPCCC)  
Wireless coexistence is crucial with the explosive development of wireless technologies in recent years.  ...  The goal of our work is to gain more insights into the coexistence issues of 802.11n and 802.15.4 and thus to help protocol design and co-located network deployments  ...  It considers only WiFi nodes with high power or low power, how to avoid the starvation of low power WiFi nodes. [5] compares the 11g and 11n impact to Zigbee.  ... 
doi:10.1109/pccc.2014.7017082 dblp:conf/ipccc/ZhaoWZZL14 fatcat:vdknavg6qbc6jpspluggmj3poq

Skip-Correlation for Multi-Power Wireless Carrier Sensing

Romil Bhardwaj, Krishna Chintalapudi, Ramachandran Ramjee
2017 Symposium on Networked Systems Design and Implementation  
The primary contribution of this paper is a novel carrier sensing mechanism -skip correlation -that extends carrier sensing to accommodate multiple transmit power levels.  ...  However, carrier sensing in its current form is fundamentally unsuitable when devices transmit at different power levels, a scenario increasingly common given the diversity of Wi-Fi APs in the market and  ...  Acknowledgments We would like to thank our shepherd, Heather Zheng, and the anonymous reviewers of NSDI'17 for their comments towards improving the paper.  ... 
dblp:conf/nsdi/BhardwajCR17 fatcat:2lbakzzxgrehznkd3n7w3h5twa