Positioning Reference Signal Priority Adaptation During Uplink Collisions
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Solution Overview
Problem
Current positioning technologies face challenges in accurately determining the location of devices in indoor environments, particularly when uplink signals collide with other transmissions, leading to dropped SRS transmissions and compromised Quality of Service (QoS) for UEs requiring low-latency communication.
Innovation Solution
A dynamic adaptation scheme for positioning reference signal (PRS) priority levels is introduced, allowing devices to receive indications for changing priority levels based on collision events or predefined conditions, ensuring timely PRS transmission even when overlapping with other channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If periodic positioning SRS transmissions are configured to track UE positions, then positioning accuracy is improved, but transmission collisions with PUSCH/PUCCH occur causing SRS to be dropped
Solution Approach 1:
The patent introduces dynamic priority adaptation for positioning reference signals, allowing the priority level to be adjusted based on collision scenarios. When a collision is detected between positioning SRS and other uplink transmissions, the system dynamically changes the priority level to ensure positioning transmissions are maintained, thus resolving the contradiction between positioning accuracy and transmission reliability.
2Measurement precision
If positioning reference signal priority is increased to prevent dropping, then positioning accuracy is improved, but impact on uplink communication performance increases
Solution Approach 1:
The patent changes the priority level parameter of positioning reference signals dynamically based on collision detection. Instead of maintaining a permanently high priority that would always impact uplink communication, the system adjusts the priority parameter only when collisions occur, thus improving positioning accuracy while minimizing the impact on overall uplink communication performance.
3Device complexity
If static priority configuration is used for PRS transmission, then device complexity is reduced, but adaptability to different scenarios is limited
Solution Approach 1:
The patent transitions from static to dynamic priority configuration for positioning reference signals. The system monitors collision events in real-time and adapts the priority level accordingly, enabling the configuration to respond to different scenarios (collisions vs. no collisions) while maintaining relatively simple device complexity through standardized adaptation rules.
Data Source
AI summary
Example embodiments of the present disclosure relate to devices, methods, apparatuses and computer readable storage media for priority adaptation of a positioning reference signal (PRS). In example embodiments, a first device receives, from a second device, an indication associated with a change of a priority level for transmitting a positioning reference signal. Based on the received indication, the first device changes the priority level for transmitting the positioning reference signal.