EOB Indication for UE Energy State Transition
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently transitioning user equipment (UE) to a low energy state during discontinuous communication active times, particularly when processing complex data like video traffic, due to difficulties in predicting the end of data frames and setting appropriate DRX inactivity timers.
Innovation Solution
The system employs an end of burst (EOB) indication to detect the end of a communicated data frame, allowing the UE to quickly transition from an active state to a low energy state during the next phase of discontinuous communication. This is achieved through methods such as bandwidth part (BWP) switching, refraining from decoding UL grants, or switching search space set groups (SSSGs).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the UE uses DRX inactivity timer to transition to quiescent state, then power consumption is reduced, but the transition time is extended and power savings are minimal
Solution Approach 1:
The network entity sends an early indication to the UE before the actual end of data transmission occurs. This allows the UE to prepare for and initiate the transition to quiescent state in advance, rather than waiting for the DRX inactivity timer to expire after transmission completes. The early indication enables the UE to start transitioning immediately, significantly reducing the time spent in active state and maximizing power savings.
2Use of energy by moving object
If the base station sends DRX MAC CE to transition UE to quiescent state, then power consumption is reduced, but the base station lacks accurate timing information for complex data frames
Solution Approach 1:
An early indication mechanism serves as an intermediary between the network entity and the UE. This indication provides the UE with advance notice of upcoming transmission end, enabling the UE to autonomously determine the optimal transition time without requiring the base station to have perfect knowledge of variable-length complex data frame boundaries. The intermediary indication bridges the information gap, allowing power savings without sacrificing timing accuracy.
3Adaptability or versatility
If the UE processes complex data like video traffic, then communication capability is enhanced, but power consumption increases and transition to low energy state becomes difficult
Solution Approach 1:
The early indication mechanism allows the UE to prepare for transition to quiescent state before complex data processing actually completes. By receiving advance notice, the UE can initiate power-down sequences, stop processing intermediate data, and transition to low energy state more quickly, thereby reducing the cumulative power consumption associated with processing complex data streams like video traffic.
Data Source
AI summary
This disclosure provides systems, methods, and devices that support end of burst (EOB) mediated energy transitioning. In a first aspect, a method of wireless communication includes detecting an EOB indication. The EOB indication indicates an end of a communicated data frame. The method further includes, in response to detecting the EOB indication, transitioning from an active state at a user equipment (UE) to a low energy state at the UE during a next phase of discontinuous communication.