Configurable PRS Resource Pattern for NR Positioning
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Solution Overview
Problem
The existing PRS resource patterns in the LTE system are not applicable in the NR system, necessitating a method for configuring a PRS resource pattern that supports configurable positioning reference signal resource allocation in the NR system.
Innovation Solution
A network device configures resource configuration information for a positioning reference signal with parameter items having multiple optional values, allowing for flexible resource allocation and improved utilization, including frequency density, frequency offset, number of symbols, and symbol position, among others, to support various resource patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the LTE system uses a fixed PRS resource pattern, then the measurement precision is ensured through strong autocorrelation and orthogonality, but the adaptability to NR system requirements is insufficient
Solution Approach 1:
The patent applies dynamics by transforming the fixed PRS resource pattern into a configurable one. The network device can dynamically select from multiple resource pattern options (different comb structures, frequency densities, time domain configurations) and adjust them according to NR system requirements, terminal capabilities, and deployment scenarios, enabling the system to adapt while maintaining measurement precision through appropriate pattern selection
Solution Approach 2:
The patent implements parameter changes by introducing configurable parameters such as frequency density (comb structure), time domain resource allocation, bandwidth configuration, and periodicity. These parameters can be adjusted to optimize PRS performance for different NR scenarios while preserving the essential autocorrelation and orthogonality properties needed for precise measurement
2Adaptability or versatility
If the NR system supports configurable PRS resource allocation, then the flexibility and resource utilization are improved, but the system complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the PRS configuration into multiple independent parameter components (frequency domain comb structure, time domain resource allocation, bandwidth settings, periodicity configurations). Each component can be independently configured and optimized, reducing the overall complexity by breaking down the configuration task into manageable segments rather than requiring simultaneous optimization of all parameters
Solution Approach 2:
The patent implements universality by designing a configurable PRS resource pattern framework that can serve multiple NR scenarios and deployment types through a unified configuration mechanism. The same configuration apparatus and parameter set can adapt to different bandwidths, subcarrier spacings, and deployment scenarios, reducing the need for separate configuration systems for each scenario
Data Source
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AI summary
This disclosure discloses a method for configuring a positioning reference signal, a network device, and a terminal. The method includes: transmitting resource configuration information of a positioning reference signal; and transmitting the positioning reference signal based on a resource pattern indicated by the resource configuration information, where the resource configuration information includes at least one parameter item, a value of the parameter item is one of at least two optional values corresponding to the parameter item, and the resource pattern is related to the value of the parameter item.