DRX Parameter Configuration for 5G Terminal Power Management
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Solution Overview
Problem
The existing DRX mechanism in 5G NR systems lacks an efficient method for terminals to detect wake-up messages within each DRX cycle, leading to suboptimal power management and resource utilization, especially in scenarios with varying data transmission patterns.
Innovation Solution
A DRX parameter configuration method that involves a wake-up parameter associated with a wake-up message, allowing terminals to detect the message within each DRX cycle and transition to a continuous active period, and subsequently enter either a first or second DRX cycle based on the wake-up parameter, with the first cycle having a longer duration than the second.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the terminal uses a fixed DRX cycle to monitor PDCCH continuously, then the response speed to data transmission is fast, but the power consumption increases significantly
Solution Approach 1:
The patent applies dynamics by enabling the terminal to switch between different DRX cycle durations (first DRX cycle with longer duration and second DRX cycle with shorter duration) based on the number of wake-up messages received. This dynamic adjustment allows the system to adapt the monitoring frequency to actual data transmission needs, resolving the contradiction between fast response and low power consumption.
Solution Approach 2:
The patent changes the DRX cycle parameter dynamically based on the count of wake-up messages. When fewer wake-up messages are received, the terminal enters the first DRX cycle with longer duration to save power. When more wake-up messages are received, the terminal switches to the second DRX cycle with shorter duration to improve response speed. This parameter change strategy directly addresses the technical contradiction.
2Duration of action of stationary object
If the terminal enters a long sleep period to save power, then battery life increases, but the ability to respond to data transmission needs deteriorates
Solution Approach 1:
The system dynamically adjusts the DRX cycle duration based on real-time wake-up message counts. The terminal can switch between a first DRX cycle (longer sleep period) and a second DRX cycle (shorter sleep period), allowing it to extend sleep duration for power saving while maintaining the ability to respond quickly when data transmission is detected.
Solution Approach 2:
The terminal uses feedback from wake-up message counts to determine which DRX cycle to enter. By continuously monitoring the number of wake-up messages and using this feedback to switch between different DRX cycle durations, the system achieves both extended sleep periods for power saving and quick response capability when needed.
3Reliability
If the terminal monitors PDCCH in every DRX cycle, then data transmission reliability is high, but power consumption increases
Solution Approach 1:
The patent changes the DRX cycle parameter based on the number of wake-up messages received. When fewer wake-up messages are detected, the terminal enters the first DRX cycle with longer duration, reducing monitoring frequency and power consumption while maintaining acceptable reliability. When more wake-up messages are detected, the terminal switches to the second DRX cycle with shorter duration, increasing monitoring frequency to improve reliability.
Solution Approach 2:
The system applies local quality by differentiating the DRX cycle behavior based on local conditions (wake-up message count). Instead of a uniform monitoring strategy, the terminal adjusts its monitoring intensity locally according to the specific situation, entering longer sleep cycles when reliability requirements are lower and shorter cycles when reliability is critical.
Data Source
AI summary
A discontinuous reception (DRX) parameter configuration method includes: receiving a wake-up parameter associated with a wake-up message configured by a base station for a terminal, wherein the wake-up message is configured to instruct the terminal to detect whether the wake-up message is received within each DRX cycle; in response to that the wake-up message is detected within a current DRX cycle, entering a continuous active period at an end of the current DRX cycle; and when the continuous active period ends, entering a target DRX cycle according to the wake-up parameter, wherein the target DRX cycle is a first DRX cycle or a second DRX cycle, and a duration of the first DRX cycle is longer than a duration of the second DRX cycle.