Electronic Device Handover via Conditional SA Mode Measurement
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Solution Overview
Problem
UEs operating in NSA mode face heating and increased power consumption issues, necessitating inter-RAT handovers even in high-temperature states or low battery conditions, which existing technologies struggle to manage effectively.
Innovation Solution
The electronic device selectively performs measurements and handovers based on a condition associated with the stand-alone (SA) mode, refraining from measurements that do not satisfy this condition, especially when dual connectivity (DC) is restricted.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE operates in NSA mode to enable inter-RAT handover, then the handover capability is improved, but power consumption and heat generation increase substantially
Solution Approach 1:
The patent changes the operational parameters by switching between SA and NSA modes based on environmental conditions (temperature and battery level). When temperature exceeds threshold or battery level is low, the UE transitions from NSA mode to SA mode, thereby reducing power consumption and heat generation while maintaining essential handover capabilities through conditional parameter adjustment
Solution Approach 2:
The patent implements dynamic mode selection where the UE adapts its operation mode (SA or NSA) based on real-time temperature and battery level conditions. This dynamic adjustment allows the system to optimize between handover capability and power consumption by selecting the appropriate mode according to current environmental constraints
2Measurement precision
If the UE performs measurements on all frequencies including NSA mode frequencies, then the measurement completeness is improved, but power consumption and heat generation increase
Solution Approach 1:
The patent modifies the measurement parameters by conditionally enabling or disabling measurement of specific frequencies based on temperature and battery level. When environmental conditions indicate high power consumption risk, the UE changes the measurement configuration to exclude NSA mode frequencies, thereby reducing measurement completeness but significantly lowering power consumption and heat generation
Solution Approach 2:
The patent applies partial action by performing measurements only on frequencies necessary for the current operational mode. Instead of measuring all available frequencies regardless of conditions, the UE selectively measures only SA mode frequencies when in SA mode or when environmental conditions restrict NSA mode operation, thereby reducing unnecessary power consumption while maintaining sufficient measurement capability
3Use of energy by moving object
If the UE restricts dual connectivity to limit power consumption, then the power efficiency is improved, but the handover flexibility is reduced
Solution Approach 1:
The patent changes the dual connectivity parameter based on environmental conditions. When temperature is high or battery level is low, the UE modifies the dual connectivity parameter to restrict NSA mode operation, thereby improving power efficiency. This parameter change is conditional and reversible, allowing the system to maintain handover flexibility when environmental conditions permit
Data Source
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AI summary
According to various embodiments, an electronic device comprises at least one processor for supporting a first radio access technology (RAT) and a second RAT, wherein the at least one processor may be configured to: receive a radio resource control (RRC) reconfiguration message including a measurement object (MO) from a network, on the basis of the first RAT; on the basis of identifying that dual connectivity (DC) of the first RAT and the second RAT is in a limited state, perform measurement on at least one first frequency satisfying a condition associated with a stand alone (SA) mode from among at least one frequency based on the second RAT identified on the basis of the MO; and avoid measurement on at least one second frequency that does not satisfy the condition from among the at least one frequency.