Cell DTX DRX Configuration Timing for Signaling Overhead Reduction
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Solution Overview
Problem
Current wireless communication systems face challenges in conserving network energy, particularly in radio access networks, where cell discontinuous transmission (DTX) and discontinuous reception (DRX) modes are used to reduce power consumption. However, these modes require explicit deactivation messages, increasing signaling overhead.
Innovation Solution
A method where a user equipment (UE) receives a configuration indicating the timing of a cell DTX or DRX, allowing it to autonomously deactivate adherence to these modes without receiving a deactivation downlink control information (DCI) from the network entity. The configuration can specify activation or deactivation times, quantities of slots or symbols, or timer settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If cell DTX or DRX modes are used to reduce power consumption, then energy efficiency is improved, but signaling overhead increases due to explicit deactivation messages
Solution Approach 1:
The patent extracts the deactivation signaling function from the traditional explicit DCI message and relocates it to the configuration parameters themselves. The time-domain behavior parameters (such as repetition factor, duration, or periodicity) inherently define both activation and deactivation timing, eliminating the need for separate deactivation signaling.
Solution Approach 2:
The configuration parameters self-service the deactivation function by encoding temporal behavior that automatically defines when the cell DTX/DRX should be deactivated. The UE autonomously determines deactivation timing based on the configured parameters without requiring additional network signaling.
2Reliability
If explicit deactivation DCI messages are transmitted, then reliable control is maintained, but signaling resources are consumed
Solution Approach 1:
The configuration parameters serve multiple functions: they define both activation and deactivation behavior, specify time-domain patterns, and control resource allocation. This multi-functionality eliminates the need for separate deactivation DCI messages while maintaining reliable control through the same robust configuration signaling path.
3Productivity
If deactivation timing is precisely controlled, then network resource allocation is optimized, but configuration complexity increases
Solution Approach 1:
The patent uses parameter changes in time-domain behavior configurations (such as repetition factor, duration, or periodicity values) to precisely control deactivation timing. By modifying these existing parameters, the network can optimize resource allocation without introducing complex new configuration structures or mechanisms.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a configuration that indicates a timing of a cell discontinuous transmission (DTX) or discontinuous reception (DRX) of a network entity. The UE may receive an activation downlink control information (DCI) for the cell DTX or DRX. The UE may apply the configuration based at least in part on receiving the activation DCI. Numerous other aspects are described.