PRS Time Domain Processing for Multi-Device Positioning
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Solution Overview
Problem
Existing positioning technologies face challenges in accurately receiving and processing Downlink Positioning Reference Signals (DL PRS) due to variations in PRS configuration and terminal processing capabilities.
Innovation Solution
A positioning signal processing method that involves receiving PRS configuration information, determining PRS time domain information, and accurately receiving PRSs based on this information, while also considering the terminal's processing capabilities to optimize PRS reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the terminal receives and processes multiple PRS resource sets with different configurations from multiple access network devices, then the positioning accuracy is improved, but the processing complexity and power consumption increase
Solution Approach 1:
The patent segments the PRS processing task by dividing multiple PRS resource sets into individual groups corresponding to different access network devices. Each PRS resource set is processed independently using dedicated time domain information (periodicity P and symbol length K), allowing the terminal to handle multiple configurations systematically without overwhelming processing complexity.
Solution Approach 2:
The patent applies preliminary action by pre-determining time domain information for each PRS resource set before actual reception. The terminal calculates periodicity P and symbol length K in advance based on configuration parameters, so that when multiple PRS signals need to be received, the processing framework is already established, reducing real-time processing complexity.
2Measurement precision
If the terminal processes PRS with longer symbol length K to improve measurement accuracy, then the positioning precision is improved, but the processing time increases
Solution Approach 1:
The patent employs parameter changes by dynamically adjusting the symbol length K based on the specific PRS configuration and terminal capability. The terminal receives configuration information indicating different K values for different PRS resource sets and adapts its processing accordingly, allowing optimal balance between measurement accuracy and processing time for each signal.
Solution Approach 2:
The patent applies dynamics by making the PRS processing parameters adaptive rather than fixed. The terminal determines time domain information dynamically for each PRS resource set based on received configuration, enabling flexible adjustment of symbol length K to match both signal characteristics and terminal processing capabilities, thus optimizing the accuracy-time tradeoff.
3Reliability
If the terminal receives PRS configuration information from multiple access network devices to enhance positioning reliability, then the positioning reliability is improved, but the device complexity and power consumption increase
Solution Approach 1:
The patent applies universality by designing a unified processing framework that handles multiple PRS resource sets from multiple access network devices using the same methodology. The terminal uses consistent procedures for determining time domain information (periodicity P and symbol length K) regardless of which access network device sends the signal, enabling reliable multi-device processing without proportionally increasing complexity.
Data Source
AI summary
A positioning signal processing method includes receiving positioning reference signal (PRS) configuration information from a positioning device. A PRS is received as a PRS resource set. Each PRS resource set includes one or more PRSs. One access network device corresponds to one or more PRS resource sets. The positioning signal processing method further includes determining PRS time domain information based on the PRS configuration information. The time domain information includes a periodicity (P) of the PRS and a symbol length of the PRS in the P. The positioning signal processing method further includes receiving a plurality of PRSs based on the PRS time domain information.