Conditional Handover Postponement for Ultra-Low Latency Services
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Solution Overview
Problem
Existing electronic devices performing handovers do not consider the state of the UE and neighboring cells, leading to potential delays or early handovers that can affect ultra-low latency services and communication quality.
Innovation Solution
An electronic device configured to receive RRC reconfiguration messages, determine conditions for postponing or performing handovers based on specific criteria, such as ultra-low latency services or voice calls, to optimize handover timing and prevent communication deterioration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the UE performs handover immediately when the handover execution condition is satisfied, then the handover response time is reduced, but the service latency increases due to not considering the current state of the UE and neighboring cell
Solution Approach 1:
The UE performs preliminary assessments of service latency requirements and neighboring cell conditions before executing handover. When the execution condition is satisfied, the UE first checks whether early handover is beneficial by evaluating service latency requirements and neighboring cell states, then decides whether to perform handover immediately or wait for additional conditions. This preliminary action prevents premature handover while maintaining fast response capability.
2Reliability
If the UE delays handover to consider UE state and neighboring cell conditions, then service quality is improved, but handover response time increases
Solution Approach 1:
The handover execution strategy is made dynamic by continuously monitoring service latency requirements and neighboring cell conditions. The UE adapts its handover timing based on real-time assessments: when early handover is determined to be beneficial, the UE executes handover immediately; when conditions suggest waiting, the UE delays handover. This dynamic approach optimizes the trade-off between response time and service quality based on current system state.
3Reliability
If the UE performs handover early when traffic size is large and bandwidth is large, then communication quality is maintained, but handover may be performed unnecessarily when conditions are not met
Solution Approach 1:
The UE performs preliminary assessments of service latency requirements and neighboring cell conditions before executing handover. When the execution condition is satisfied, the UE first checks whether early handover is beneficial by evaluating service latency requirements and neighboring cell states, then decides whether to perform handover immediately or wait for additional conditions. This preliminary action prevents premature handover while maintaining fast response capability.
Solution Approach 2:
The handover decision mechanism incorporates feedback loops where the UE continuously monitors service latency requirements, traffic size, and neighboring cell conditions. Based on this feedback, the UE dynamically adjusts handover timing and determines whether early handover is beneficial. This feedback-driven approach ensures handover is performed only when truly necessary while maintaining communication quality.
Data Source
AI summary
An electronic device is provided. The electronic device includes at least one processor, wherein the at least one processor is configured to receive an RRC reconfiguration message including information related to a conditional handover from a serving cell, determine whether to perform the conditional handover, based on the information related to the conditional handover included in the RRC reconfiguration message, determine whether at least one condition for postponing a time point at which the conditional handover is performed is satisfied, based on the determination to perform the conditional handover, and postpone the time point at which the conditional handover is performed, based on satisfaction of at least some of the at least one condition. Other various embodiments are possible.