Single-shot Carrier Phase Positioning Method with Wrapping Effect Solution in 5G New Radio Cellular Networks

As the demand for positioning accuracy reaches the centimeter level, Carrier Phase Positioning (CPP) technology has received widespread attention in 5G New Radio (NR) positioning scenarios due to its high ranging accuracy. In this paper, we presents a new single-shot CPP method suitable for 5G NR cellular networks. By performing a search in the coordinate neighborhood space of the Time Difference of Arrival (TDOA) positioning results, the proposed method bypasses the need for resolving the integer ambiguity required for CPP. It also includes a wrapping effect detection and elimination for the carrier phase measurements. The proposed method finally get the positioning result by calculating cost function which considers both TDOA and CPP results. Numerical simulations demonstrate superior performance compared to other positioning solutions.