Barrachina Muñoz, SergioBellalta, BorisKnightly, Edward2021-05-102021-05-102020Barrachina-Muñoz S, Bellalta B, Knightly E. Wi-fi all-channel analyzer. In: MobiCom '20: The 26th Annual International Conference on Mobile Computing and Networking; 2020 Sep 15; London, UK. New York: ACM; 2020. p. 72-9. DOI: 10.1145/3411276.3412190http://hdl.handle.net/10230/47370Comunicació presentada al MobiCom '20: The 26th Annual International Conference on Mobile Computing and Networking, celebrat el 15 de setembre de 2020 a Londres, Regne Unit.In this paper, we present WACA, the first system to simultaneously measure the energy in all 24 Wi-Fi channels that allow channel bonding at 5 GHz with microsecond scale granularity. With WACA, we perform a first-of-its-kind measurement campaign in areas including urban hotspots, residential neighborhoods, universities, and a sold-out stadium with 98,000 fans and 12,000 simultaneous Wi-Fi connections. The gathered dataset is a unique asset to find insights otherwise not possible in the context of multi-channel technologies like Wi-Fi. To show its potential, we compare the performance of contiguous and non-contiguous channel bonding using a trace-driven framework. We show that while non-contiguous outperforms contiguous channel bonding's throughput, occasionally bigger by a factor of 5, their average throughputs are similar.application/pdfeng© 2020 Association for Computing Machineryinfo:eu-repo/semantics/conferenceObjecthttp://dx.doi.org/10.1145/3411276.3412190Channel bondingMeasurement campaignSpectrum occupancyIEEE 802.11axCamp Nou stadiuminfo:eu-repo/semantics/openAccess