Positioning Reference Signal Bandwidth Configuration in 5G Networks
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Solution Overview
Problem
Next-generation wireless networks require flexible configuration of radio resources for positioning reference signals to support high requirements and various use cases, particularly in 5G NR systems, where existing methods lack the flexibility to efficiently manage positioning reference signals across different scenarios.
Innovation Solution
The method involves configuring the transmission bandwidth of positioning reference signals per cell and per UE, using preconfigured tables to map RSTD indexes, allowing for flexible transmission patterns and interference control through dynamic signaling and multiple bandwidth parts, enabling efficient positioning in diverse scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If positioning reference signals are transmitted using fixed bandwidth configuration, then system complexity is reduced, but adaptability to different usage scenarios deteriorates
Solution Approach 1:
The patent implements dynamic bandwidth configuration for positioning reference signals by introducing configurable bandwidth parts (BWPs) that can be adjusted based on different usage scenarios. The base station can dynamically switch between different BWP configurations to adapt to varying positioning requirements, thereby achieving adaptability without permanently increasing system complexity.
Solution Approach 2:
The patent changes the bandwidth parameter of positioning reference signals by defining multiple bandwidth parts with different bandwidth values. The system can select and switch between these predefined bandwidth configurations based on the specific usage scenario, enabling flexible adaptation while maintaining manageable complexity through parameterization.
2Adaptability or versatility
If multiple bandwidth parts are configured for positioning reference signals, then adaptability to different scenarios is improved, but device complexity increases
Solution Approach 1:
The patent segments the total bandwidth into multiple bandwidth parts (BWPs), each optimized for specific usage scenarios. This segmentation allows the system to activate only the necessary BWP configuration for each scenario, reducing the effective complexity while maintaining high adaptability. The bandwidth resource is divided into manageable segments that can be independently configured and activated.
3Measurement precision
If positioning reference signals are transmitted with high bandwidth, then positioning accuracy is improved, but interference between cells increases
Solution Approach 1:
The patent segments the frequency resources by assigning different bandwidth parts to different cells or cell groups for positioning reference signal transmission. This frequency division segmentation reduces inter-cell interference while maintaining high positioning accuracy within each cell's allocated bandwidth. The total bandwidth is divided into multiple non-overlapping or partially overlapping BWP segments.
Solution Approach 2:
The patent applies local quality by allowing different cells to use different bandwidth part configurations optimized for their specific interference environments and positioning requirements. Each cell can selectively activate BWPs that minimize interference with neighboring cells while maintaining adequate positioning accuracy for local conditions.
Data Source
AI summary
Provided are methods and devices for performing positioning in a next-generation wireless network. The method of a UE for performing positioning include identifying configuration information for a transmission bandwidth of a positioning reference signal (PRS) configured per cell and receiving the positioning reference signal corresponding to each cell based on the configuration information for the transmission bandwidth.