Experimental Evaluation of IEEE 802.15.4z UWB Ranging Performance under Interference

Abstract

The rise of precise wireless localization for industrial and consumer use is continuing to challenge a significant amount of research. Recently the new ultra-wideband standard IEEE 802.15.4z was released to increase both the robustness and security of the underlying message exchanges. Due to the lack of accessible transceivers, most of the current research on this is of theoretical nature though. This work provides the first experimental evaluation of the ranging performance in realistic environments and also assesses the robustness to different sources of interference. To evaluate the individual aspects, a set of three different experiments are conducted. One experiment with realistic movement and two additional with targeted interference. It could be shown that the cryptographic additions of the new standard can provide sufficient information to improve the reliability of the ranging results under multi-user interference significantly.

Smartphones with UWB: Evaluating the Accuracy and Reliability of UWB Ranging

“…Since this technology directly interferes with the real world by sending pulse-based signals, any obstructions, the positioning of the devices, and other wireless devices can influence the accuracy of distance measurements. This has been demonstrated by our study and previous work [37].…”

“…In 2020, after the release of IEEE 802.15.4z with LRP and the STS to secure HRP measurements, studies have started to compare LRP and HRP in terms of energy consumption [36]. Works in 2022 also evaluate the accuracy of the DW3000 chipsets from Qorvo in development kits, like the DWM3000EVB [30,37,38]. The DW3000 has also been compared to LRP devices [30].…”

“…d) DW3000 in motion: Tiemann et al [37] performed an experimental evaluation of the DW3000 while walking through a storage hall with many obstructions. Overall, the measurement errors are less than 50 cm throughout the whole measurement series.…”

FlexTDOA: Robust and Scalable Time-Difference of Arrival Localization Using Ultra-Wideband Devices

“…Modern radios, such as the one we are using, can directly measure the relative clock skew by analyzing the carrier frequency of the received packet. Research shows [32] that DS-TWR and SS-TWR attain almost the same precision with clock skew estimation.…”

Advances in Indoor Positioning and Indoor Navigation

“…Regarding UWB, the standard IEEE 802.15.4z was recently released to increase both the robustness and the security of the underlying message exchanges. Most of the work is theoretical, but Tiemann et al [ 5 ] show an empirical evaluation of the ranging performance in realistic environments and also assess the robustness to different sources of interference.…”