Wireless Communication DRX Configuration for Network Energy Efficiency
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Solution Overview
Problem
Current wireless communication systems focus primarily on energy saving for user equipment (UE), while studies on energy saving for the network side are relatively less developed.
Innovation Solution
A wireless communication method where a base station sends a network discontinuous communication configuration to a UE, which includes configurations for network discontinuous reception and transmission, allowing the UE to perform behaviors such as random access, data transmission, and cell reselection, with the configuration managed at various granularities including per cell, base station, MAC entity, UE, and UE group.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the network continuously monitors and communicates with the UE, then the communication reliability is improved, but the energy consumption of the network increases
Solution Approach 1:
The patent implements periodic Discontinuous Reception (DRX) cycles where the UE alternates between active reception periods and sleep periods. During sleep periods, the UE stops monitoring downlink control information, reducing network energy consumption while maintaining communication reliability through scheduled wake-ups for system information acquisition and paging monitoring.
Solution Approach 2:
The network performs preliminary actions by pre-configuring DRX parameters and sending advance notifications before the UE enters sleep mode. This allows the UE to prepare for wake-up scenarios, ensuring reliable communication when needed while maximizing energy savings during idle periods.
2Speed
If the UE continuously monitors downlink control information, then the response speed is improved, but the energy consumption of the UE increases
Solution Approach 1:
The UE employs periodic DRX cycles to monitor downlink control information only during active periods, then enters sleep mode during inactive periods. This periodic monitoring maintains adequate response speed for most scenarios while dramatically reducing UE energy consumption compared to continuous monitoring.
Solution Approach 2:
The UE autonomously manages its power consumption by self-scheduling wake-up and sleep periods based on configured DRX parameters. The UE independently decides when to activate its receiver and when to enter low-power mode, optimizing the balance between response speed and energy consumption without requiring continuous network intervention.
3Loss of energy
If the network uses detailed per-UE discontinuous communication configuration, then the energy saving effectiveness is improved, but the configuration complexity increases
Solution Approach 1:
The patent segments the discontinuous communication configuration into multiple independent DRX cycle configurations that can be applied at different levels (cell-level, UE-level, UE-group-level). Each segment can be independently configured and activated, allowing flexible energy saving optimization without overwhelming complexity. The segmentation enables selective application of DRX parameters to specific UEs or UE groups based on their communication needs.
Solution Approach 2:
The system implements local quality by allowing different DRX configurations for different UEs or UE groups based on their specific communication characteristics and energy saving requirements. Rather than applying a uniform configuration to all UEs, the network can tailor DRX parameters to local conditions, optimizing energy saving effectiveness for each group while managing configuration complexity through targeted rather than universal configuration.
Data Source
AI summary
A wireless communication method includes the following. A user equipment (UE) receives a network discontinuous communication configuration sent by a base station, where the network discontinuous communication configuration includes a network discontinuous communication configuration for a cell and/or a network discontinuous communication configuration for the base station.