Extending the Coverage of IEEE 802.15.4z HRP UWB Ranging

Currently, the Ultra-Wide Band (UWB) technology commercialized in smartphones and smart keys is a High Rate Pulse repetition frequency (HRP) UWB of the IEEE 802.15.4z standard, which aims to accurately determine the distance between UWB devices located within tens of meters using Two Way Ranging (TWR). However, in order for UWB ranging technology to be spread to various location-based services or positioning services, it must be able to measure the distance between UWB devices that are hundreds of meters apart. Fortunately, UWB technology can freely change physical layer parameters as long as it complies with the UWB local regulation worldwide. Therefore, in this study, we analyzed the method of configuring packet structure, length, and transmission power from the link budget perspective to enable longer UWB ranging of hundreds of meters within UWB local regulations. As a result of the analysis, we theoretically confirmed that UWB ranging is possible even at hundreds of meters by selecting the optimal physical layer parameters. In addition, the experimental results using the Qorvo DW3000 module were confirmed to be consistent with the results analyzed in this study. The results of this study can be used as a basic data for the introduction of wide-area UWB technology and services in the future.