UE Mobility State Determination via Local Variable Maintenance
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Solution Overview
Problem
Current methods for determining the mobility state of User Equipment (UE) in LTE networks are inadequate when UE enters a connected state for a short period, leading to frequent switching between network and UE-side mobility determination, which affects mobility robustness.
Innovation Solution
The UE maintains a mobility state evaluation variable when entering a connected state for a short period, determining its mobility state based on this variable, thereby avoiding frequent network-UE switching and allowing self-determination of mobility state, improving mobility robustness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the network side determines mobility state based on handover times when UE enters connected state, then mobility control is centralized, but frequent switching between network and UE side determination occurs when UE enters connected state for short period
Solution Approach 1:
The UE is enabled to autonomously determine its own mobility state by maintaining and using the mobility state evaluation variable locally, without requiring network side intervention or frequent switching between network and UE side determination. This self-service approach resolves the contradiction by allowing the UE to independently handle mobility determination even when entering connected state for short periods.
Solution Approach 2:
The mobility state evaluation variable is maintained and preserved from idle state into connected state, allowing the UE to continue using the same evaluation metric without resetting or switching determination methods. This preliminary preparation of the evaluation variable enables consistent mobility state determination across state transitions.
2Reliability
If mobility state determination is performed by network side based on handover statistics, then centralized control is achieved, but UE cannot independently determine mobility state during short connected state periods
Solution Approach 1:
The UE independently determines its mobility state by maintaining the mobility state evaluation variable locally, eliminating the need for network side intervention during short connected state periods. This self-service mechanism grants the UE autonomy in mobility determination while maintaining accuracy through the preserved evaluation variable.
3Device complexity
If the UE resets mobility state evaluation variable when entering connected state, then network side control is simplified, but mobility robustness deteriorates due to loss of historical mobility information
Solution Approach 1:
The mobility state evaluation variable is prepared and maintained in advance, preserving historical mobility information from idle state through the transition to connected state. This preliminary maintenance of the evaluation variable ensures that valuable mobility history is not lost, thereby maintaining mobility robustness without complicating the determination process.
Data Source
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AI summary
Disclosed are a UE movement state determination method, a user equipment (UE) and a computer storage medium. The method comprises: when a UE enters a connected state for a short time, keeping and maintaining a movement state evaluation variable, and determining a movement state thereof based on the movement state evaluation variable.