Connected DRX State Management for UE Power and Mobility
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Solution Overview
Problem
Current LTE technologies face challenges in efficiently managing power consumption and mobility performance due to infrequent search and measurement of neighboring cells, leading to potential connectivity issues and increased power usage.
Innovation Solution
Implementing a method for user equipment (UE) to dynamically adjust the frequency of search and measurement based on signal quality and specific events, utilizing three states: normal, light panic, and panic modes, to optimize power consumption and mobility performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE performs frequent search and measurement of neighboring cells, then mobility performance and connectivity are improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic adjustment of measurement frequency based on UE state. The network configures different measurement periodicities for different states (light panic state with longer periodicity, panic state with shorter periodicity), allowing the system to adapt measurement activity to current connectivity conditions and power constraints, thus resolving the contradiction between frequent measurement and power consumption
Solution Approach 2:
The patent changes the measurement periodicity parameter based on UE state. When in light panic state, a first (longer) periodicity is used; when in panic state, a second (shorter) periodicity is used. This parameter adjustment allows the system to balance measurement accuracy with power consumption according to current connectivity requirements
2Use of energy by moving object
If the UE enters DRX state to save power, then power consumption is reduced, but search and measurement of neighboring cells becomes less frequent
Solution Approach 1:
The network performs preliminary configuration of multiple measurement periodicities and defines state transition criteria in advance. When connectivity degradation is detected, the network can quickly switch the UE to panic state with appropriate measurement periodicity, ensuring mobility performance is maintained without requiring the UE to continuously perform measurements at maximum frequency
Solution Approach 2:
The patent uses periodic measurements with state-dependent periodicity. In DRX state, measurements are performed periodically at configured intervals. The periodicity is adjusted based on state (light panic or panic), allowing the system to maintain mobility performance when needed while enabling power-saving periodic operation during normal conditions
Data Source
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AI summary
Certain aspects of the present disclosure relate to methods and apparatus for wireless communication, and more particularly, to methods and apparatus that utilize one or more user equipment (UE) panic states under connected discontinuous reception (C-DRX) mode in long term evolution (LTE).