NR Positioning Reference Signal Resource Allocation
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Solution Overview
Problem
Current 5G New Radio (NR) technologies face challenges in efficiently transmitting multiple positioning reference signals, particularly in terms of resource allocation and interference avoidance, which affects the accuracy and reliability of positioning services.
Innovation Solution
The method involves a user equipment (UE) receiving positioning reference signal parameters from a base station, determining resource elements within a transmission bandwidth, and decoding symbols to optimize the transmission of positioning reference signals across multiple symbol periods, using different antenna ports and transmission patterns to minimize interference and enhance signal density.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple positioning reference signals are transmitted using conventional methods, then the positioning service coverage is provided, but resource allocation efficiency is low and interference occurs between signals
Solution Approach 1:
The patent applies dynamics by making the reference signal transmission configurable and adaptable. The network can dynamically select different transmission patterns (FDM, TDM, CDM) and adjust parameters like comb offset and resource element allocation based on traffic conditions and interference levels, allowing the system to optimize positioning signal transmission in real-time while minimizing interference with data channels.
Solution Approach 2:
The patent segments the reference signal transmission into distinct resource elements and symbol periods. By dividing the transmission bandwidth into specific resource elements and allocating reference signals to particular symbol periods within slots, the system creates structured segments that can be independently configured to avoid interference while maintaining comprehensive positioning coverage.
2Measurement precision
If reference signals are transmitted in all symbol periods, then signal density is high, but resource allocation becomes inefficient
Solution Approach 1:
The patent applies local quality by configuring reference signal transmission selectively in specific symbol periods rather than uniformly across all periods. The network can designate certain symbol periods (e.g., first and last symbols of a slot) for reference signal transmission while leaving intermediate symbols for data transmission, thereby concentrating positioning resources where most beneficial while optimizing overall resource utilization.
Solution Approach 2:
The patent implements partial action by transmitting reference signals only in selected symbol periods rather than continuously. This partial transmission approach provides sufficient positioning accuracy for most scenarios while significantly improving resource allocation efficiency, allowing the system to achieve adequate positioning performance with fewer reference signal transmissions.
3Measurement precision
If positioning reference signals use dedicated resources, then positioning accuracy is maintained, but system capacity is reduced
Solution Approach 1:
The patent achieves universality by designing a resource allocation framework where the same time-frequency resources can serve dual purposes: positioning reference signals in designated symbol periods and data transmission in other periods. This multi-functional resource usage allows the system to maintain positioning accuracy while simultaneously supporting data traffic, thereby preserving system capacity.
Solution Approach 2:
The patent resolves the resource conflict by introducing the time dimension through selective symbol period allocation. By distributing reference signals across different symbol periods within slots rather than requiring dedicated continuous resources, the system creates a temporal dimension for resource sharing, enabling both positioning and data transmission to coexist efficiently in the same frequency-bandwidth.
Data Source
AI summary
In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a UE. The apparatus may be a UE. The apparatus may be a UE. The UE receives one or more positioning reference signal parameters from a base station. The UE determines resource elements in a transmission bandwidth carrying multiple positioning reference signals based on the positioning reference signal parameters. The UE decodes symbols in the resource elements.