Non-Uniform DRX Cycles for Mixed-Periodicity Traffic
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Solution Overview
Problem
Existing wireless communication systems struggle to concurrently support multiple types of traffic with non-uniform communication periodicities using a single DRX cycle, leading to inefficiencies in power consumption and communication reliability.
Innovation Solution
Implementing multiple DRX cycles with non-uniform periodicities to concurrently support different types of traffic, allowing a user equipment (UE) to determine a set of start times based on both long and short DRX cycles, thereby improving communication reliability and power conservation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single DRX cycle is used to support multiple traffic types, then device complexity is reduced, but communication reliability deteriorates because non-uniform periodicities cannot be accommodated
Solution Approach 1:
The patent divides a single DRX cycle into multiple sub-cycles with different periodicities (first DRX cycle and second DRX cycle). Each sub-cycle is dedicated to specific traffic types with uniform periodicity requirements, allowing the system to maintain multiple periodicities simultaneously while using a unified DRX framework, thus resolving the contradiction between simplicity and reliability
2Reliability
If multiple DRX cycles with non-uniform periodicities are implemented, then communication reliability improves for diverse traffic types, but device complexity increases
Solution Approach 1:
The patent creates a universal DRX cycle structure that can accommodate multiple traffic types with different periodicities through nested sub-cycles. The first and second DRX cycles serve as parent cycles containing multiple child cycles with uniform periodicities, allowing a single DRX mechanism to handle diverse traffic requirements without requiring separate DRX systems for each traffic type
3Device complexity
If a single DRX cycle is used, then power consumption management is simplified, but power efficiency deteriorates due to inability to optimize for different traffic periodicities
Solution Approach 1:
The patent implements dynamic power management by allowing the UE to transition between different DRX cycle configurations based on traffic requirements. The system can dynamically select which sub-cycles to activate and adjust monitoring frequencies, enabling optimized power consumption for different traffic patterns while maintaining a unified power management framework that avoids excessive complexity
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. In some wireless communications systems, a user equipment (UE) may support discontinuous reception (DRX) operation. The UE may receive, from a network entity, configuration signaling indicating multiple DRX cycles (e.g., multiple long DRX cycles, multiple short DRX cycles, or both). For example, different DRX cycles may correspond to receiving different types of traffic according to different periodicities. In some examples, a type of traffic may correspond to a specific DRX cycle (e.g., long DRX cycle) or a pair of specific DRX cycles (e.g., short and long DRX cycles). The UE may calculate start times for an on duration timer for the DRX operation based on multiple DRX cycles. The UE may start the on duration timer at the start times and may monitor a control channel while the on duration timer is running.