Selective Physical Channel Transmission During Non-Active DRX Periods
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Solution Overview
Problem
Current wireless communication systems face challenges in optimizing power conservation during cell discontinuous transmission and reception, as dropping all physical channels or signals during non-active times can adversely affect data rates, latency, and synchronization.
Innovation Solution
Implementing selective transmission or skipping of physical channels or signals during non-active times based on conditions such as duration, periodicity, quality of service requirements, and signal quality, allowing for network energy savings while maintaining system performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If all physical channels or signals are dropped during non-active times for cell DRX, then network energy consumption is reduced, but data rates and latency deteriorate
Solution Approach 1:
The patent applies local quality by selectively dropping only certain physical channels and signals during non-active DRX periods while maintaining others. Specifically, control plane SI messages are dropped during non-active time, while user plane data transmissions continue. This selective approach allows the network to conserve energy by reducing unnecessary transmissions while maintaining data rates through continued user plane communication.
Solution Approach 2:
The patent segments physical channels into different categories: control plane channels (which are dropped during non-active time) and user plane channels (which continue transmitting). This segmentation allows differentiated handling of channel types, enabling energy savings from dropping control plane traffic while preserving data rate performance through continued user plane transmissions.
2Loss of energy
If all physical channels or signals are dropped during non-active times for cell DRX, then network energy consumption is reduced, but synchronization performance deteriorates
Solution Approach 1:
The patent applies local quality by selectively dropping only non-essential signals during non-active times while preserving synchronization-critical signals. Specifically, control plane SI messages are dropped, but synchronization signals and user plane data continue to transmit. This ensures that synchronization performance is maintained through continued transmission of essential signals while still achieving energy savings from reduced control plane activity.
3Reliability
If repetitions of physical uplink channel or signal are transmitted during non-active times, then reliability is improved, but network energy consumption increases
Solution Approach 1:
The patent applies local quality by allowing repetitions to be transmitted selectively based on their location relative to DRX active periods. repetitions that fall within active DRX periods are transmitted to ensure reliability, while repetitions during non-active periods are dropped to conserve energy. This selective repetition strategy maintains communication reliability for critical transmissions while reducing energy consumption by avoiding redundant transmissions during sleep periods.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive configuration information that indicates a non-active time for cell discontinuous reception and that indicates a quantity of repetitions for one of a physical uplink channel or signal. The UE may transmit one or more repetitions of the one of the physical uplink channel or signal in one or more transmission occasions outside of the non-active time. The UE may drop transmission of one or more repetitions of the one of the physical uplink channel or signal in one or more transmission occasions in the non-active time. Numerous other aspects are described.