Literature Database Entry

gawlowicz2020ctc


Piotr Gawłowicz, Anatolij Zubow, Suzan Bayhan and Adam Wolisz, "Punched Cards over the Air: Cross-Technology Communication Between LTE-U/LAA and WiFi," Proceedings of 21th IEEE International Symposium on a World of Wireless, Mobile and Multimedia Networks (WoWMoM 2020), Virtual Conference, September 2020.

Abstract

Despite exhibiting very high theoretical data rates, in practice, the performance of LTE-U/LAA and WiFi networks is severely limited under cross-technology coexistence scenarios in the unlicensed 5 GHz band. As a remedy, recent research shows the need for collaboration and coordination among co-located networks. However, enabling such collaboration requires an information exchange that is hard to realize due to completely incompatible network protocol stacks. We propose OfdmFi, the first cross-technology communication scheme that enables direct bidirectional over-the-air communication between LTE-U/LAA and WiFi with minimal overhead to their legacy transmissions. Requiring neither hardware nor firmware changes in commodity technologies, OfdmFi leverages the standard-compliant possibility of generating message-bearing power patterns, similar to punched cards from the early days of computers, in the time-frequency resource grid of an OFDM transmitter which can be cross-observed and decoded by a heterogeneous OFDM receiver. As a proof-of-concept, we have designed and implemented a prototype using commodity devices and SDR platforms. Our comprehensive evaluation reveals that OfdmFi achieves robust bidirectional CTC between both systems with a data rate of up to 84 kbps, which is more than 125x faster than state-of-the-art.

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Piotr Gawłowicz
Anatolij Zubow
Suzan Bayhan
Adam Wolisz

BibTeX reference

@inproceedings{gawlowicz2020ctc,
    author = {Gawłowicz, Piotr and Zubow, Anatolij and Bayhan, Suzan and Wolisz, Adam},
    title = {{Punched Cards over the Air: Cross-Technology Communication Between LTE-U/LAA and WiFi}},
    publisher = {IEEE},
    address = {Virtual Conference},
    booktitle = {21th IEEE International Symposium on a World of Wireless, Mobile and Multimedia Networks (WoWMoM 2020)},
    month = {9},
    year = {2020},
   }
   
   

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