Link-level measurements from an 802.11b mesh network
Proceedings of the 2004 conference on Applications, technologies, architectures, and protocols for computer communications
A framework for wireless LAN monitoring and its applications
Proceedings of the 3rd ACM workshop on Wireless security
Strategies for sound internet measurement
Proceedings of the 4th ACM SIGCOMM conference on Internet measurement
ExOR: opportunistic multi-hop routing for wireless networks
Proceedings of the 2005 conference on Applications, technologies, architectures, and protocols for computer communications
Measurement-based characterization of 802.11 in a hotspot setting
Proceedings of the 2005 ACM SIGCOMM workshop on Experimental approaches to wireless network design and analysis
Jigsaw: solving the puzzle of enterprise 802.11 analysis
Proceedings of the 2006 conference on Applications, technologies, architectures, and protocols for computer communications
Analyzing the MAC-level behavior of wireless networks in the wild
Proceedings of the 2006 conference on Applications, technologies, architectures, and protocols for computer communications
Automating cross-layer diagnosis of enterprise wireless networks
Proceedings of the 2007 conference on Applications, technologies, architectures, and protocols for computer communications
Stationary Distributions for the Random Waypoint Mobility Model
IEEE Transactions on Mobile Computing
A quantitative evaluation of the MeshTest wireless testbed
Proceedings of the 4th International Conference on Testbeds and research infrastructures for the development of networks & communities
Active capture of wireless traces: overcome the lack in protocol analysis
Proceedings of the third ACM international workshop on Wireless network testbeds, experimental evaluation and characterization
WiOPT'09 Proceedings of the 7th international conference on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks
Addressing scalability in a laboratory-based multihop wireless testbed
Mobile Networks and Applications
A Socratic method for validation of measurement-based networking research
Computer Communications
Proceedings of the 8th ACM Symposium on Performance evaluation of wireless ad hoc, sensor, and ubiquitous networks
WiFox: scaling WiFi performance for large audience environments
Proceedings of the 8th international conference on Emerging networking experiments and technologies
SloMo: downclockingWiFi communication
nsdi'13 Proceedings of the 10th USENIX conference on Networked Systems Design and Implementation
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Packet traces from 802.11 wireless networks are incomplete both fundamentally, because antennas do not pick up every transmission, and practically, because the hardware and software of collection may be under provisioned. One strategy toward improving the completeness of a trace of wireless network traffic is to deploy several monitors; these are likely to capture (and miss) different packets. Merging these traces into a single, coherent view requires inferring access point (AP) and client behavior; these inferences introduce errors. In this paper, we present methods to evaluate the fidelity of merged and independent wireless network traces. We show that wireless traces contain sufficient information to measure their completeness and clock accuracy. Specifically, packet sequence numbers indicate when packets have been dropped, and AP beacon intervals help determine the accuracy of packet timestamps. We also show that trace completeness and clock accuracy can vary based on load. We apply these metrics to evaluate fidelity in two ways: (1) to visualize the completeness of different 802.11 traces, which we show with several traces available on CRAWDAD and (2) to estimate the uncertainty in the time measurements made by the individual monitors.