Drone SRS Relay for Wireless Location Tracking
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Solution Overview
Problem
Current wireless communication systems face challenges in accurately tracking the location of user equipment, especially in scenarios where traditional methods are hindered by weak signal strength or non-line-of-sight conditions, such as outdoor or indoor environments, and require improved accuracy and reliability for next-generation communication standards like 5G.
Innovation Solution
The method involves using a drone equipped with communication capabilities to receive and transmit sounding reference signals (SRS) from user equipment, allowing it to measure and report location information back to a base station, which can then use this data to determine the user equipment's location with enhanced precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional location tracking methods are used in wireless communication systems, then the system can operate with existing infrastructure, but location tracking accuracy deteriorates in challenging environments such as outdoor or indoor scenarios with weak signal strength or non-line-of-sight conditions
Solution Approach 1:
The patent introduces a drone as an intermediary device between the base station and user equipment. The drone flies to secure line-of-sight communication paths, acting as a mediator that establishes reliable communication channels in environments where direct base station-UE connections are weak or non-existent. This intermediary approach enables accurate location tracking by creating new signal paths through three-dimensional space rather than relying solely on traditional ground-based infrastructure.
2Measurement precision
If a drone is introduced to enhance location tracking accuracy by securing line-of-sight communication, then measurement precision improves, but device complexity increases
Solution Approach 1:
The drone is designed with multi-functionality, serving both as a communication relay for maintaining connectivity and as a location measurement device for tracking user equipment positions. By integrating these multiple functions into a single platform, the patent avoids the need for separate dedicated systems, thereby managing complexity while achieving enhanced location tracking capabilities.
Solution Approach 2:
The system implements feedback mechanisms where the drone reports measured location information back to the base station, which then uses this information to update location tracking data. This feedback loop enables continuous refinement of location accuracy while allowing the system to adapt to changing environmental conditions, managing complexity through intelligent control rather than hardware proliferation.
3Measurement precision
If the drone performs location tracking using SRS signals, then location measurement capability is enhanced, but the requirement for precise timing information increases system complexity
Solution Approach 1:
The system performs preliminary synchronization actions before location measurement begins. The base station and drone establish timing alignment and synchronization protocols in advance, preparing the timing infrastructure needed for accurate SRS-based location measurements. This preliminary setup reduces the complexity of real-time timing requirements by establishing reference frames and timing relationships beforehand.
Data Source
AI summary
A method for a drone to measure a location of a user equipment in a wireless communication system can be provided according to one embodiment of the present specification. In this case, the method can include the steps of performing an initial access procedure with a base station, receiving SRS configuration information of the user equipment from the base station, receiving an SRS from the user equipment based on the SRS configuration information of the user equipment, and transmitting location measurement information, which is measured based on the received SRS, to the base station.