RS-P-S Configuration Aligning Position Signals with DTX ON Periods
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Solution Overview
Problem
The irregular and nonuniform positioning reference signal (PRS) transmission behavior due to cell discontinuous transmission (DTX) operations limits easy scheduling of network operations during DTX ON duration.
Innovation Solution
A reference signal for positioning or sensing (RS-P-S) configuration is implemented with a periodicity that matches or overlaps with the periodicity of discontinuous communication (DCX) ON periods, including a DCX ON offset for each RS-P-S occasion to align with DCX ON periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If cell discontinuous transmission (DTX) operations are implemented to save energy, then energy consumption is reduced, but positioning reference signal transmission becomes irregular and nonuniform
Solution Approach 1:
The system dynamically adapts PRS transmission behavior to match the dynamic DTX ON periods. The RS-P-S configuration is made flexible to align with varying DTX cycles, allowing the transmission schedule to change based on the active periods rather than following a fixed pattern. This resolves the contradiction by making the system adaptive rather than static.
Solution Approach 2:
The invention changes the timing parameters of PRS transmission to match DTX ON periods. By adjusting the periodicity and offset parameters of RS-P-S occasions to align with the DTX active periods, the system maintains uniform behavior during transmission windows while preserving energy during off periods. This parameter alignment resolves the contradiction between energy saving and transmission uniformity.
2Measurement precision
If PRS transmission is aligned with DTX ON periods to ensure uniform behavior, then position estimation accuracy is improved, but scheduling complexity increases
Solution Approach 1:
The system employs periodic PRS transmission occasions that are synchronized with the periodic DTX ON periods. By establishing a regular pattern where PRS transmissions occur at fixed intervals within the active periods, the system achieves uniform behavior that improves measurement accuracy. The periodic nature simplifies the scheduling logic compared to ad-hoc arrangements.
Solution Approach 2:
The RS-P-S configuration is pre-established with specific periodicity and offset parameters that align with DTX cycles before transmission begins. This preliminary configuration eliminates the need for complex real-time scheduling decisions, as the transmission timing is predetermined based on the known DTX pattern. This reduces scheduling complexity while maintaining accuracy.
3Stability of the object's composition
If RS-P-S occasions are configured with periodicity matching DTX ON periods, then uniform behavior across DRX/DTX cycles is achieved, but flexibility in scheduling other network operations is reduced
Solution Approach 1:
The transmission timeline is segmented into distinct DTX ON and OFF periods, with RS-P-S occasions confined to the ON periods. This segmentation creates clear boundaries that ensure uniform behavior during active transmission windows while leaving the OFF periods available for other operations. The segmented structure provides both consistency during transmission and flexibility for other uses.
Solution Approach 2:
The PRS transmission function is extracted and isolated to specific time windows (DTX ON periods) rather than being distributed throughout the entire cycle. This extraction concentrates the positioning function in dedicated slots, ensuring uniform behavior where it occurs while freeing up other time periods for diverse network operations. This separation maintains uniformity without overly constraining overall scheduling flexibility.
Data Source
AI summary
In an aspect, a first wireless node, obtains a reference signal for positioning or sensing (RS-P-S) configuration that configures RS-P-S occasions, wherein the RS-P-S occasions comprises RS-P occasions associated with a position estimation session or radio frequency for sensing (RF-S) occasions associated with an RF-S procedure. The first wireless node further obtains a discontinuous communication (DCX) configuration associated with the first wireless node or a second wireless node. In an aspect, a periodicity associated with the RS-P-S occasions matches or overlaps with a periodicity of DCX ON periods associated with the DCX configuration, and the RS-P-S configuration comprises a DCX ON offset associated with a respective RS-P-S occasion per matching or overlapping DCX ON period. The first wireless node performs operation(s) associated with a configured RS-P-S occasion of the RS-P-S occasions in accordance with the RS-P-S configuration.