Inter-DRX Assistance for UE Power Saving in Wireless Systems
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Solution Overview
Problem
Existing DRX mechanisms in wireless communication systems are not flexible enough to adapt to different service requirements across multiple Bandwidth Parts (BWP) or Component Carriers (CC), leading to inefficient power consumption and energy waste.
Innovation Solution
The proposed solution involves inter-DRX assistance, which allows for multiple DRX configurations per Media Access Control (MAC) entity, enabling dynamic wake-up or go-to-sleep signals across different BWPs or CCs. This is achieved through an indication mechanism that coordinates DRX cycles across multiple component carriers and bandwidth parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single DRX configuration is used for all BWPs or CCs, then the device complexity is reduced, but the power saving efficiency deteriorates due to inability to adapt to different service requirements
Solution Approach 1:
The patent divides the DRX configuration into separate entities for each BWP or CC, allowing independent configuration of DRX parameters for different bandwidth parts or component carriers. This segmentation enables tailored DRX settings for each service type without requiring a single complex unified configuration, thus improving adaptability while managing complexity through modular structure
Solution Approach 2:
The patent introduces dynamic DRX configuration where the network can switch between different DRX configurations based on current service requirements and traffic conditions. The UE can dynamically select or be directed to use different DRX settings for different BWPs or CCs, enabling flexible adaptation to changing network conditions and service needs without being locked into a single static configuration
2Loss of energy
If multiple DRX configurations are implemented per MAC entity, then the power saving efficiency is improved through customized DRX cycles for each BWP or CC, but the device complexity increases
Solution Approach 1:
The patent applies different DRX configurations to different BWPs or CCs based on their specific service requirements and traffic characteristics. Each BWP or CC can have customized DRX parameters (such as on-duration, sleep duration, wake-up intervals) optimized for its local needs, allowing the system to reduce power consumption in specific areas without compromising overall performance, thus improving power saving efficiency through localized optimization
Solution Approach 2:
The patent incorporates feedback mechanisms where the network monitors UE behavior and traffic patterns to dynamically adjust DRX configurations. The network can receive feedback about which DRX configurations are most effective for different services and use this information to optimize future configurations, reducing power consumption while managing complexity through intelligent control based on observed performance data
3Loss of energy
If DRX configurations are customized for each BWP or CC, then the power saving efficiency is improved, but the ease of operation deteriorates due to increased configuration management overhead
Solution Approach 1:
The patent designs a universal DRX configuration framework that can handle multiple BWPs and CCs through a standardized approach. The network device can use a single unified procedure to configure DRX parameters for different services, and the UE can systematically manage multiple configurations using consistent rules and protocols, thus maintaining ease of operation while achieving customized power saving for each BWP or CC
Data Source
AI summary
An inter-DRX Assistance method for operating a user equipment (UE) and network device, of a wireless communication system in a Discontinuous Reception (DRX) mode, the wireless communication system including a plurality of user equipments (UE), and the UE communicating with one or more further user equipments (UEs) by receiving, by the user equipments (UE), at least one Discontinuous Reception (DRX) configuration from one of a plurality of a Discontinuous Reception (DRX) configuration sources, whereby that plurality of Discontinuous Reception (DRX) configurations is configured for the same Media Access Control (MAC) entity in order to reduce the power consumption of the user equipment.