Bandwidth Part Configuration Switching for Wireless Power Management
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Solution Overview
Problem
Conventional dual connectivity techniques in wireless communication systems are sub-optimal for managing bandwidth part (BWP) configurations, particularly in transitioning between activity states, leading to inefficient power usage and connection stability issues.
Innovation Solution
A method and apparatus for a user equipment (UE) to switch between BWP configurations based on activity state transitions, triggered by timer expiration or control signaling, allowing for adaptive configuration of BWP settings to optimize power consumption and connection stability by switching between different BWP configurations during dormancy and active states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conventional dual connectivity techniques are used for managing BWP configurations, then connection stability is maintained, but power consumption efficiency deteriorates
Solution Approach 1:
The patent implements dynamic BWP configuration switching based on activity states. The UE transitions between different BWP configurations (first BWP for active state, second BWP for dormant state) according to activity state changes, making the system adaptive rather than static. This dynamic adjustment allows the UE to use smaller bandwidth configurations during dormant periods, reducing power consumption while maintaining connection stability through proper state management.
Solution Approach 2:
The patent changes the BWP configuration parameters based on activity state transitions. When transitioning from active to dormant state, the UE switches to a second BWP configuration with different parameters (typically smaller bandwidth) to reduce power consumption. When transitioning back to active state, the UE switches to the first BWP configuration. This parameter change approach enables efficient power management while maintaining connection reliability through controlled transitions.
2Use of energy by moving object
If BWP configuration is switched dynamically based on activity state, then power consumption is optimized, but system complexity increases
Solution Approach 1:
The patent introduces dynamic BWP switching mechanisms that activate based on activity state transitions. The system dynamically adjusts BWP configurations without requiring complex continuous monitoring, instead triggering changes only at state transition points. This event-driven dynamic approach optimizes power consumption while limiting complexity growth by avoiding unnecessary continuous adjustments.
Solution Approach 2:
The UE autonomously manages its own BWP configuration transitions based on its activity state. The device self-determines when to switch between first and second BWP configurations based on its own activity state changes, without requiring complex network coordination for each transition. This self-service approach reduces overall system complexity by distributing the management burden to the UE while achieving power optimization goals.
3Use of energy by moving object
If UE transitions to dormant state with smaller BWP, then power savings are achieved, but connection responsiveness may deteriorate
Solution Approach 1:
The patent implements dynamic state transitions that allow the UE to quickly switch between active and dormant states based on traffic conditions. The BWP configuration changes are triggered by activity state transitions, enabling the system to adapt bandwidth usage to actual needs. During dormant state, the smaller second BWP provides power savings, while the ability to quickly transition back to the first BWP configuration ensures responsiveness when traffic resumes.
Solution Approach 2:
The patent prepares multiple BWP configurations in advance (first BWP for active state, second BWP for dormant state) so that transitions can occur quickly without real-time computation. The UE has pre-configured bandwidth settings ready for different activity states, allowing immediate switching when state transitions occur. This preliminary preparation ensures that power savings during dormant state do not compromise connection responsiveness, as the system can rapidly revert to the appropriate BWP configuration when needed.
Data Source
AI summary
Device and techniques for wireless communications are described. A user equipment (UE) may switch from a first bandwidth part (BWP) configuration to a second BWP configuration based on a trigger for transitioning from a first activity state to a second activity state with respect to a cell group. The trigger may be an expiration of a timer at the UE, or the UE may receive control signaling indicating the transition. The second BWP configuration may be based on a mode configured at the UE associated with the second activity state. The configured mode may indicate one or more measurements the UE is to perform while in the second activity state. In some examples, the BWP configuration may include configured BWPs based on the indicated measurements of the configured mode.