5G Positioning Signal Timing for High-Frequency Uplink Accuracy
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Solution Overview
Problem
Current 5G mobile communication systems face challenges in efficiently transmitting and receiving positioning signals, particularly in high-frequency bands, which affects the accuracy and reliability of location-based services and network performance.
Innovation Solution
A method and device for user equipment (UE) that determines resource configuration information for sounding reference signals (SRS) and uplink signals, optimizing their transmission timing based on specific thresholds and conditions to ensure accurate positioning signal measurement and reporting, including prioritizing positioning reference signal (PRS) resources and selecting downlink beams for improved signal quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If positioning signals are transmitted in high-frequency bands, then transmission rates and capacity are improved, but path loss increases and transmission distance decreases
Solution Approach 1:
The patent changes the transmission parameters by introducing different subcarrier spacings (120 kHz for positioning signals vs. 60 kHz for data signals) and adjusted timing advance values. These parameter modifications allow positioning signals to maintain better synchronization and accuracy in high-frequency bands despite increased path loss, resolving the contradiction between high transmission rates and positioning reliability.
2Productivity
If multiple signals (SRS and uplink data) are transmitted simultaneously, then resource utilization is improved, but signal collision and interference increase
Solution Approach 1:
The patent applies preliminary action by having the UE calculate and report its timing advance value based on positioning signal measurements before actual uplink transmission. The base station then uses this pre-calculated timing advance to adjust the transmission timing of SRS and uplink data signals, preventing collisions before they occur and maintaining signal quality while allowing simultaneous transmission.
3Measurement precision
If timing advance is adjusted for positioning accuracy, then positioning precision is improved, but uplink synchronization with data signals deteriorates
Solution Approach 1:
The patent segments the timing advance adjustment into two independent components: one for positioning signals and one for data signals. The UE calculates a first timing advance specifically for positioning based on PRS measurements, while the base station determines a second timing advance for data transmission. This segmentation allows each signal type to have optimized timing without interfering with the other, maintaining both positioning precision and uplink synchronization stability.
Data Source
AI summary
The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. A method for transmitting, receiving and measuring of positioning signal is provided. The method includes determining resource configuration information of a sounding reference signal (SRS) and configuration information of a first uplink signal, and transmitting SRS and the first uplink signal according to the determined the resource configuration information of SRS and the configuration information of the first uplink signal.