UE Power State Transitions for Reliable Wireless Energy Saving
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Solution Overview
Problem
Existing wireless communication systems lack efficient mechanisms for UEs to transition between multiple power states to optimize power consumption and resource utilization based on network conditions.
Innovation Solution
A UE transitions between multiple power states based on conditions such as initiating a retransmission timer, transmitting negative acknowledgment messages, operating in activation periods, receiving downlink messages, or timer expiration, with each state associated with specific configurations and component carriers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the UE operates in a single fixed power state, then the device complexity is reduced, but the power consumption cannot be optimized based on network conditions
Solution Approach 1:
The patent implements dynamic power state transitions where the UE can switch between multiple power states (first power state and second power state) based on real-time network conditions and communication requirements. The UE transitions from a first power state to a second power state when specific conditions are met, such as receiving downlink messages, transmitting acknowledgments, or timer expirations, thereby optimizing power consumption dynamically rather than operating in a fixed state
Solution Approach 2:
The patent changes the power state parameter of the UE based on communication conditions. The network entity signals different power states through control messages, and the UE adjusts its operational parameters (such as monitoring intervals, reception sensitivity, and transmission timing) according to the activated power state, enabling efficient power management through parameter adaptation
2Use of energy by moving object
If the UE transitions frequently between power states to optimize power consumption, then power savings are achieved, but the communication reliability may be affected due to transition overhead
Solution Approach 1:
The patent employs feedback mechanisms where the UE monitors communication conditions (such as successful message reception, acknowledgment transmission, and timer status) and uses this feedback to determine when to transition between power states. The network entity also provides feedback through control messages that indicate when the UE should transition, ensuring that power state changes are triggered only when necessary and do not compromise communication reliability
Solution Approach 2:
The patent implements preliminary actions by having the UE prepare for power state transitions in advance. The UE monitors for conditions that will trigger transitions (such as receiving downlink messages or timing out) and proactively transitions to appropriate power states before communication issues arise, ensuring smooth transitions that maintain reliability while saving power
3Productivity
If the UE uses multiple power states with different configurations, then resource utilization is improved, but the ease of operation is reduced due to complex transition conditions
Solution Approach 1:
The patent implements self-service by enabling the UE to autonomously manage power state transitions based on its own operational conditions. The UE monitors its own state (such as whether it needs to receive downlink messages, transmit acknowledgments, or has active timers) and automatically transitions between power states without requiring manual intervention or complex user-side configuration, thereby maintaining ease of operation while improving resource utilization
Solution Approach 2:
The patent makes the power state mechanism universal by designing a single framework that handles multiple scenarios (downlink message reception, uplink transmission, timer management) through unified power state transitions. The same power state transition mechanism serves multiple communication needs, simplifying the overall system design and maintaining ease of operation while achieving improved resource utilization across different operational contexts
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. In some wireless communications systems, a user equipment (UE) may receive a control message indicating multiple power states, where each power state of the multiple power states may be associated with a configuration of the UE. Additionally, the UE may transition from a first power state of the multiple power states to a second power state of the multiple power states based on a condition being satisfied. In such cases, a first configuration of the UE associated with the first power state may be different than a second configuration of the UE associated with the second power state.