Achieving receiver-side cross-technology communication with cross-decoding

Wenchao Jiang, Song Min Kim, Zhijun Li, Tian He

Research output: Chapter in Book/Report/Conference proceedingConference contribution

60 Scopus citations


Cross-technology Communication (CTC) is a key technique to explore the full capacity of heterogeneous wireless. The latest CTC designs explore the PHY-layer to reach the standards' maximum rate, but leaving a critical gap to practicality - existing PHY-layer CTCs are commonly transmitter-side techniques requiring a high-end transmitter (with a high degree of freedom in signal manipulation) to emulate the receiver signal closely. This inherently limits the reverse direction (low-end to high-end) communication. We present XBee, a unique receiver-side CTC thatfi lls in the gap and makes a critical step towards achieving CTC bidirectionality. XBee is demonstrated as a ZigBee to BLE communication, where the key innovation lies in the unique mechanism of cross-technology decoding, or cross-decoding in short, which interprets a ZigBee frame only by carefully observing the bit patterns obtained at the BLE receiver. Technically, XBee counterintuitively explores the sampling offset to overcome the intrinsic challenge due to BLE's narrower bandwidth (1MHz) than ZigBee (2MHz). Extensive implementation and evaluation on USRP and commodity devices reaches 250 kbps under 85% reliability, a 15,000x improvement over state-ofthe- art ZigBee to BLE communication, and comparable with the latest PHY-layer CTCs to achieve CTC bidirectionality.

Original languageEnglish (US)
Title of host publicationMobiCom 2018 - Proceedings of the 24th Annual International Conference on Mobile Computing and Networking
PublisherAssociation for Computing Machinery
Number of pages14
ISBN (Electronic)9781450359030
StatePublished - Oct 15 2018
Event24th Annual International Conference on Mobile Computing and Networking, MobiCom 2018 - New Delhi, India
Duration: Oct 29 2018Nov 2 2018

Publication series

NameProceedings of the Annual International Conference on Mobile Computing and Networking, MOBICOM


Other24th Annual International Conference on Mobile Computing and Networking, MobiCom 2018
CityNew Delhi

Bibliographical note

Publisher Copyright:
© 2018 Association for Computing Machinery.


  • Bluetooth Low Energy
  • Cross-technology Communication
  • Internet of Things
  • ZigBee


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