Predictive Wireless Measurements for Reliable Cell Handover
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Solution Overview
Problem
In high-frequency wireless communication systems, frequent handovers lead to handover failures due to early, late, or incorrect cell changes, resulting in low reliability and high latency, which cannot meet the data performance requirements for high data rates.
Innovation Solution
A wireless device receives a measurement configuration from a network, derives predictive measurement results based on a configured time, and transmits these results to optimize handover processes, allowing the network to prepare for target cells and reduce data interruptions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If frequent handovers are performed in high-frequency wireless communication systems, then cell coverage is extended, but handover failures increase due to early, late, or incorrect cell changes
Solution Approach 1:
The patent applies preliminary action by predicting future measurement results before actual handover is needed. The wireless device derives predictive measurement results based on prediction time, allowing the network to prepare target cells in advance and perform early data forwarding, thereby reducing handover failures while maintaining extended cell coverage
Solution Approach 2:
The patent implements feedback by transmitting predictive measurement results back to the network. This feedback mechanism enables the network to adjust handover decisions based on predicted future conditions rather than relying solely on current measurements, improving handover reliability without compromising coverage area
2Productivity
If frequent handovers are performed in high-frequency wireless communication systems, then spectrum utilization is improved, but latency increases due to handover failures
Solution Approach 1:
The patent reduces handover latency by performing preliminary actions - deriving predictive measurement results before handover is actually needed. This allows the network to prepare target cells and forward data early, eliminating the time loss associated with failed handovers while maintaining high spectrum utilization through frequent cell changes
3Measurement precision
If measurement reporting is performed in real-time, then handover accuracy is improved, but data interruptions increase
Solution Approach 1:
The patent resolves this contradiction by performing measurement derivation in advance based on prediction time. Instead of waiting for real-time measurements that cause data interruptions, the system pre-calculates future measurement results, achieving high handover accuracy without interrupting data transmission
Solution Approach 2:
The patent skips the traditional real-time measurement and reporting cycle by directly deriving predictive measurement results. This rushing through of the measurement process eliminates the time delay and data interruption associated with real-time reporting while maintaining the accuracy needed for successful handovers
Data Source
AI summary
A method and apparatus for measurement prediction in a wireless communication system is provided. A wireless device receives, from a network, a measurement configuration including (i) a measurement object, (ii) a reporting condition, and (iii) information on a prediction time. A wireless device derives at least one predictive measurement result for the measurement object based on the prediction time. A wireless device transmits at least one predictive measurement result based on determining the at least one predictive measurement result satisfying the reporting condition.