UE Mobility State Adjustment for Wireless Power Optimization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems fail to adjust the mobility state of user equipment (UE) in RRC connected mode based on background traffic, leading to unnecessary power consumption and high handover failure rates, as they do not differentiate between user interactive and non-user interactive applications, and cannot meet network monitor requirements.
Innovation Solution
A method that allows the UE to change its mobility state from handover to reselection mode when operating in background mode for extended periods, reducing power consumption and improving handover success rates by sending specific messages to the E-UTRAN cell to switch to a lower power consumption state, and vice versa when interactive applications are active.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE maintains handover mobility state in RRC connected mode, then the network monitor requirement is met and handover reliability is improved, but power consumption increases due to continuous monitoring
Solution Approach 1:
The patent dynamically changes the UE mobility state between handover and reselection modes based on application activity. When no user interactive application is detected, the UE transitions from handover mobility state to reselection mobility state, reducing monitoring frequency and power consumption. When user interactive application starts, the UE switches back to handover mobility state to meet network requirements.
Solution Approach 2:
The patent changes the mobility state parameter of the UE based on traffic conditions. By detecting whether user interactive applications are running, the system adjusts the mobility state parameter between 'handover' and 'reselection' modes, thereby controlling the monitoring frequency and power consumption levels.
2Use of energy by moving object
If the UE operates in reselection mobility state to reduce power consumption, then battery life is extended, but handover failure rate increases due to insufficient monitoring
Solution Approach 1:
The system dynamically switches between reselection and handover mobility states based on application activity detection. The UE monitors for user interactive applications and transitions mobility states accordingly, ensuring low power consumption during background operation while maintaining handover reliability when needed.
Solution Approach 2:
The patent implements feedback mechanisms where the UE detects application activity status and uses this information to determine mobility state transitions. The system continuously monitors application states and adjusts mobility behavior based on this feedback, balancing power consumption and handover reliability.
3Reliability
If the UE continuously monitors network conditions in handover mode, then network monitor requirements are met, but unnecessary power consumption occurs during background traffic
Solution Approach 1:
The patent changes the mobility state parameter based on traffic type detection. When background traffic is detected without user interactive applications, the UE switches to reselection mobility state with reduced monitoring. When user interactive applications are present, the UE maintains handover mobility state for full monitoring compliance.
Solution Approach 2:
The patent segments the operation modes based on application activity. The system divides time into periods of user interactive application execution and background traffic periods, applying different mobility states to each segment. This segmentation allows optimized power consumption during background periods while maintaining compliance during interactive periods.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
In a wireless communication system, a user equipment is configured to establish an RRC link with a cell when operating in a first mobility state or a second mobility state of an RRC connected mode. When all currently running application programs only cause background traffic or do not require short data latency, the user equipment is configured to maintain in or switch to the first mobility state having a lower monitoring frequency. When any of the currently running applications involves user interaction or requires short data latency, the user equipment is configured to maintain in or switch to the second mobility state having a higher monitoring frequency.