AI-Predicted Handover Timing for Wireless Network Mobility
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Solution Overview
Problem
Cellular handovers (HOs) often fail due to being performed too late, too early, or to a wrong cell, leading to inefficiencies in wireless networks.
Innovation Solution
A wireless transmit/receive unit (WTRU) receives network predicted radio measurements and timestamps, performs additional radio measurements, and sends evaluation information before a handover window, allowing for optimal handover execution based on configuration information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If handover is triggered based on traditional measurement reporting, then the handover decision is made using actual measured values, but the handover timing is often too late or too early causing failures
Solution Approach 1:
The network performs preliminary actions by predicting future radio measurements and timestamps before the actual handover event. The WTRU receives network predicted measurements with associated timestamps and uses these predictions to determine the optimal handover execution time, allowing the handover to be triggered at the precise moment rather than reacting after measurement reporting.
Solution Approach 2:
The WTRU sends evaluation information back to the network indicating whether the network predicted measurements match actual measurements. This feedback mechanism allows the network to refine its prediction algorithms and improve future handover timing accuracy based on the discrepancy between predicted and actual measurement values.
2Measurement precision
If the WTRU performs additional radio measurements based on timestamps, then the measurement precision is improved, but the device complexity increases
Solution Approach 1:
The network performs preliminary calculations of predicted measurements and timestamps based on historical data and network conditions. The WTRU then uses these pre-calculated values rather than performing complex real-time predictions, reducing the measurement processing complexity at the WTRU while maintaining high measurement precision.
3Reliability
If the WTRU sends evaluation information before the handover window, then the handover timing is optimized, but the loss of time increases
Solution Approach 1:
The WTRU sends evaluation information about network predicted measurements before the actual handover execution time. This preliminary evaluation allows the network to verify prediction accuracy in advance and adjust the handover timing accordingly, optimizing handover execution accuracy while minimizing the time loss by using the evaluation results to refine the handover decision.
Data Source
AI summary
Procedures, methods, architectures, apparatuses, systems, devices, and computer program products for handover procedures which use network predicted measurements. For example, a wireless transmit/receive unit (WTRU) may receive a handover command. The WTRU may receive a first set of measurements from a network. For example, the first set may be predicted measurements. The network may use artificial intelligence and/or machine learning models to generate the first set. The WTRU may obtain (e.g., measure and/or predict) a second set of measurements. The first and/or second set of measurements may be associated with a (e.g., same) first time interval and/or confidence level. Based on a comparison between the first set and second set, the WTRU may determine (i) to execute a handover, in a second time interval, and/or (ii) send feedback information. For example, the WTRU may determine an ideal time to actually execute the handover.