Integrating the RTT estimation framework with other 5G positioning techniques like angle-of-arrival (AoA) and time-difference-of-arrival (TDoA) can lead to more robust and accurate localization solutions in 5G networks. By combining multiple positioning methods, the system can leverage the strengths of each technique to overcome individual limitations and enhance overall positioning performance.
Hybrid Positioning: Combining RTT estimation with AoA and TDoA allows for hybrid positioning approaches that leverage the complementary nature of these techniques. RTT provides accurate distance measurements, while AoA and TDoA offer angular information, enabling precise localization in both indoor and outdoor environments.
Diversity in Measurement: Integrating multiple positioning techniques increases the diversity of measurement sources, improving the system's resilience to multipath effects, interference, and environmental conditions. By fusing information from RTT, AoA, and TDoA, the system can achieve more reliable and accurate position estimates.
Enhanced Robustness: By cross-validating the position estimates obtained from different techniques, the system can enhance robustness against errors and outliers. In scenarios where one method may be affected by limitations such as NLOS conditions, the integration of multiple techniques can provide a more reliable localization solution.
Improved Accuracy: Combining RTT with AoA and TDoA enables the system to exploit the strengths of each technique to improve overall accuracy. By leveraging the spatial diversity offered by AoA, the temporal information from RTT, and the signal arrival time differences from TDoA, the system can achieve higher precision in determining the UE's location.
By integrating RTT estimation with AoA and TDoA within the 5G NR standards, operators and service providers can deploy more advanced and robust positioning solutions that meet the diverse requirements of emerging use cases such as autonomous vehicles, industrial IoT, and smart cities.