Development of an Uplink Sensing Demonstrator for Perceptive Mobile Networks

Uplink sensing offers a cost-effective solution to real-time detection and tracking of moving objects in Perceptive Mobile Networks (PMN), which integrates sensing into mobile networks. Currently, there has been extensive research on passive human localization techniques based on millimeter-wave radar and Wi-Fi, whereas there are relatively few reports on passive human localization using mobile networks. This paper introduces the development of a real-time uplink sensing demonstrator for PMN, enabling sub-meter precision tracking in indoor environments. Motion-related parameters, such as Doppler frequency, angle-of-arrival (AoA), and dynamic propagation delay are estimated instantly within a sampling window of around 200 milliseconds. This prototype system achieves the median localization precision of 76 cm and the 80% localization precision of 107 cm in an office setting.