WTRU Positioning Time Windows for Reduced Measurement Latency
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently performing positioning of wireless transmit and receive units (WTRUs) due to latency issues during measurement gaps, which hinder accurate location determination.
Innovation Solution
Implementing methods and apparatus for configuring measurement gaps to optimize positioning of WTRUs by requesting new positioning reference signal configurations and prioritizing measurement windows, allowing for reduced latency and improved location accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If measurement gaps are configured for WTRU positioning, then positioning accuracy is improved, but latency increases
Solution Approach 1:
The measurement gap configuration is made dynamic by allowing the WTRU to request reconfiguration based on current positioning needs. The system transitions from static pre-configured measurement gaps to dynamic on-demand measurement gap patterns, enabling the WTRU to adapt the measurement timing to actual positioning requirements and reduce unnecessary latency.
Solution Approach 2:
The WTRU is pre-configured with multiple measurement gap patterns that can be selectively activated. When positioning is needed, the WTRU can quickly switch to an appropriate pre-prepared pattern rather than waiting for network reconfiguration, reducing the time to start measurements while maintaining positioning accuracy.
2Productivity
If positioning reference signal configurations are optimized, then positioning efficiency is improved, but system complexity increases
Solution Approach 1:
The WTRU autonomously determines when positioning measurements are needed and independently requests measurement gap reconfiguration from the network. This self-service approach allows the WTRU to optimize positioning efficiency based on its own needs without requiring complex network-side control logic, thereby improving efficiency while limiting the increase in overall system complexity.
Solution Approach 2:
The positioning functionality is segmented into independent components: the WTRU handles autonomous decision-making for when positioning is needed, while the network handles the actual configuration changes. This segmentation allows each part to be optimized independently, improving overall positioning efficiency without proportionally increasing total system complexity.
Data Source
AI summary
The disclosure pertains to methods and apparatus for performing positioning of wireless transmit and/or receive units (WTRUs) in wireless communication systems. A WTRU may receive configuration information indicating a time window associated with positioning. The configuration information may indicate any of a duration and a periodicity of the time window. The WTRU may receive (1) first scheduling information indicating to transmit a first uplink transmission including a sounding reference signal (SRS) and (2) second scheduling information indicating to transmit a second uplink transmission including a positioning SRS (SRSp). The first uplink transmission may not include any SRSp. On condition that the second uplink transmission is scheduled for transmission during the time window, the WTRU may transmit the second uplink transmission during the time window and may transmit the first uplink transmission only when the first uplink transmission is scheduled for transmission outside of the time window.