Dynamic Measurement Time Windows for 5G Positioning Accuracy
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently determining the position of user equipment (UE) due to limitations in measurement time-domain windows for positioning, which affect the accuracy and efficiency of positioning reference signals (PRS) in 5G networks.
Innovation Solution
A method where a target user equipment receives a control message from a network entity identifying a set of measurement time windows to perform signal measurements and transmits a measurement report, allowing for dynamic selection and optimization of measurement times to enhance positioning accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If fixed measurement time windows are used for positioning, then the positioning process is simple to implement, but the positioning accuracy and efficiency are limited
Solution Approach 1:
The patent applies dynamics by transitioning from fixed measurement time windows to dynamic measurement time windows that are selected based on current channel conditions and positioning requirements. The network entity determines appropriate measurement time windows in real-time and configures them to the UE through RRC signaling, allowing the system to adapt to changing environmental conditions and optimize positioning accuracy accordingly.
Solution Approach 2:
The patent implements parameter changes by modifying the measurement time window parameters (such as window duration, timing, and frequency) based on channel conditions and positioning accuracy requirements. The network entity can adjust these parameters dynamically to optimize the balance between positioning accuracy and system resource utilization, rather than using static fixed windows.
2Measurement precision
If measurement time windows are extended to improve positioning accuracy, then measurement precision improves, but time consumption and latency increase
Solution Approach 1:
The patent applies partial action by selecting measurement time windows that are sufficient to achieve the required positioning accuracy without extending them unnecessarily. The network entity determines the appropriate window duration and timing based on the specific positioning requirements and channel conditions, using only the necessary measurement time rather than continuously extended windows, thus reducing latency while maintaining accuracy.
Solution Approach 2:
The patent implements preliminary action by pre-configuring multiple measurement time window options with different durations and characteristics before actual positioning measurements are needed. When positioning is required, the network entity can quickly select from these pre-prepared windows based on current conditions, avoiding the need to extend measurement windows in real-time and reducing overall measurement time and latency.
3Productivity
If dynamic measurement time windows are implemented, then positioning efficiency and accuracy improve, but system complexity and signaling overhead increase
Solution Approach 1:
The patent applies self-service by enabling the network entity to autonomously determine and select appropriate measurement time windows based on channel conditions and positioning requirements without requiring complex external coordination. The network entity manages the measurement time window configuration independently, selecting from pre-configured options and updating UE configurations through standard RRC signaling, thus improving positioning efficiency while keeping system management relatively simple.
4Measurement precision
If frequent measurement time window updates are performed, then positioning accuracy is maintained, but signaling overhead and energy consumption increase
Solution Approach 1:
The patent implements periodic action by updating measurement time window configurations at appropriate intervals rather than continuously or too frequently. The network entity monitors channel conditions and positioning requirements, updating UE measurement time window configurations only when necessary to maintain positioning accuracy, thus reducing unnecessary signaling overhead and energy consumption while keeping positioning performance adequate.
Data Source
AI summary
In an aspect, a target user equipment performs positioning. For example, the target user equipment receives a control message from a network entity. The control message identifies a set of measurement time windows in which to perform measurements of one or more signals. The target user equipment performs the measurements of the one or more signals within the set of measurement time windows and transmits a measurement report to the network entity. The measurement report comprises the measurements of the one or more signals performed within the set of measurement time windows.