Multi-Antenna Positioning Reference Signals for Low-Latency Accuracy
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing positioning technologies in NR Rel-16 systems are limited to using one antenna port for transmitting or receiving positioning-purpose reference signals, leading to increased positioning time latency and reduced accuracy, which is inadequate for scenarios requiring sub-meter accuracy and sub-100 ms latency.
Innovation Solution
Simultaneously transmitting and receiving positioning-purpose reference signals through multiple antenna ports to enable simultaneous communication with multiple network devices, utilizing configuration parameter information and beam direction indications to optimize signal transmission and reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If one antenna port is used for transmitting positioning-purpose reference signals, then device complexity is reduced, but positioning time latency increases and accuracy decreases
Solution Approach 1:
The patent segments the positioning measurement process by dividing it into multiple parallel measurement streams, each corresponding to a different antenna port. The UE simultaneously measures positioning reference signals from multiple network devices through different antenna ports, thereby reducing the total positioning time latency while maintaining manageable device complexity through structured resource allocation.
2Device complexity
If one antenna port is used for transmitting positioning-purpose reference signals, then device complexity is reduced, but positioning accuracy decreases
Solution Approach 1:
The patent merges measurements from multiple antenna ports and multiple network devices to achieve higher positioning accuracy. By combining the positioning reference signal measurements from N antenna ports simultaneously, the system achieves sub-meter accuracy that exceeds what would be possible with a single antenna port, while managing complexity through standardized measurement procedures.
3Measurement precision
If multiple antenna ports are used for simultaneous transmission, then positioning accuracy improves, but device complexity increases
Solution Approach 1:
The patent implements dynamic resource allocation for multiple antenna ports, where the network can flexibly configure and activate different antenna ports based on positioning requirements. The system dynamically adjusts the number of antenna ports (N) and their resource allocations, allowing high positioning accuracy when needed while reducing complexity when fewer resources are required, thus adapting to varying operational conditions.
4Loss of time
If multiple antenna ports are used for simultaneous transmission, then positioning time latency reduces, but device complexity increases
Solution Approach 1:
The patent employs preliminary configuration of antenna port resources through network signaling, where the network pre-configures the UE with information about available antenna ports and their resource allocations before positioning measurements begin. This preliminary setup reduces the complexity of managing multiple antenna ports during actual positioning operations, as the resource allocation framework is already established, enabling fast simultaneous measurements with reduced time latency.
Data Source
AI summary
A method for transmitting positioning-purpose reference signals comprises: simultaneously transmitting, by means of N antenna ports, positioning-purpose reference signals among one or more network devices.