TY - GEN
T1 - RF-SIFTER
T2 - 29th Annual International Conference on Mobile Computing and Networking, MobiCom 2023
AU - Wang, Xiong
AU - Huang, Jun
AU - Shi, Bizhao
AU - Ou, Zhe
AU - Luo, Guojie
AU - Kong, Linghe
AU - Zhang, Daqing
AU - Xu, Chenren
N1 - Publisher Copyright:
© 2023 ACM.
PY - 2023/10/2
Y1 - 2023/10/2
N2 - 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.
AB - 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.
KW - IoT
KW - beamforming
KW - cross-Technology interference
KW - jamming
KW - low-power wireless networks
UR - https://www.scopus.com/pages/publications/85168665458
U2 - 10.1145/3570361.3592513
DO - 10.1145/3570361.3592513
M3 - Conference contribution
AN - SCOPUS:85168665458
T3 - Proceedings of the Annual International Conference on Mobile Computing and Networking, MOBICOM
SP - 165
EP - 178
BT - Proceedings of the 29th Annual International Conference on Mobile Computing and Networking, ACM MobiCom 2023
PB - Association for Computing Machinery
Y2 - 2 October 2023 through 6 October 2023
ER -