RF-SIFTER : Sifting Signals at Layer-0.5 to Mitigate Wideband Cross-Technology Interference for IoT

Research output: Chapters, Conference Papers, Creative and Literary WorksRGC 32 - Refereed conference paper (with host publication)peer-review

1 Scopus Citations
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Author(s)

  • Xiong Wang
  • Bizhao Shi
  • Zhe Ou
  • Guojie Luo
  • Linghe Kong
  • Daqing Zhang
  • Chenren Xu

Related Research Unit(s)

Detail(s)

Original languageEnglish
Title of host publicationProceedings of the 29th Annual International Conference on Mobile Computing and Networking, ACM MobiCom 2023
Place of PublicationNew York
PublisherAssociation for Computing Machinery (ACM)
Pages165-178
ISBN (print)9781450399906
Publication statusPublished - 2023

Publication series

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

Conference

Title29th Annual International Conference on Mobile Computing and Networking, MobiCom 2023
PlaceSpain
CityMadrid
Period2 - 6 October 2023

Abstract

IoT uplink performance is crucial for a wide variety of IoT applications such as health sensing and industrial control, which demand reliable delivery of sensor data to the cloud. However, due to the limited transmission power budget imposed on many power-constrained IoT devices, IoT uplinks are highly susceptible to cross-Technology interference (CTI) caused by coexisting networks. Previous approaches to mitigating CTI have relied on MAC/PHY designs. They suffer from poor performance and limited generality in the presence of wideband CTI sources such as Wi-Fi and RF jammer, which transmit aggressively on large spectrum chunks using diverse radio technologies.
This paper introduces RF-SIFTER, a general and highly-effective system that protects low-power IoT uplinks against intensive wideband CTI. RF-SIFTER enables technology-Agnostic blind beamforming to sift signals based on bandwidth, allowing IoT signals to pass through while rejecting interference wider than the IoT band. RF-SIFTER is designed as a Layer-0.5 that is transparent to IoT MAC/PHY, ensuring general applicability and practical deployability across a wide range of coexistence scenarios. RF-SIFTER is implemented on an FPGA-based software radio platform. Extensive experiments show that RF-SIFTER can improve the SINR of IoT uplink signals by up to 29 dB and increase packet delivery ratio by 2× to 5× for ZigBee, BLE, and RFID in the presence of wideband CTI caused by 802.11ac networks and RF jamming.
© 2023 ACM.

Research Area(s)

  • beamforming, cross-Technology interference, IoT, jamming, low-power wireless networks

Citation Format(s)

RF-SIFTER: Sifting Signals at Layer-0.5 to Mitigate Wideband Cross-Technology Interference for IoT. / Wang, Xiong; Huang, Jun; Shi, Bizhao et al.
Proceedings of the 29th Annual International Conference on Mobile Computing and Networking, ACM MobiCom 2023. New York: Association for Computing Machinery (ACM), 2023. p. 165-178 (Proceedings of the Annual International Conference on Mobile Computing and Networking, MOBICOM).

Research output: Chapters, Conference Papers, Creative and Literary WorksRGC 32 - Refereed conference paper (with host publication)peer-review