Discontinuous Reception Parameter Configuration for 5G XR Battery Efficiency
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Solution Overview
Problem
In extended reality (XR) services over 5G networks, excessive battery consumption and control channel usage occur due to frequent data transfers, necessitating improved discontinuous reception techniques to sustain XR services while reducing power consumption and control channel usage.
Innovation Solution
The method involves determining the starting point of active time and performing discontinuous reception (DRX) operations based on specific timer configurations and parameters, including the use of first and second DRX parameters to optimize DRX operations in 5G systems, thereby reducing power consumption and control channel usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If discontinuous reception is used to reduce battery consumption during XR services, then power efficiency is improved, but service continuity and data transfer reliability may deteriorate
Solution Approach 1:
The patent implements dynamic DRX configuration where the terminal and base station can adjust DRX parameters (such as onDurationTimer, drx-InactivityTimer, drx-RetransmissionTimer) based on current service requirements, traffic patterns, and channel conditions. This allows the system to switch between aggressive power-saving modes and responsive service modes dynamically, resolving the contradiction between battery consumption and service continuity.
Solution Approach 2:
The patent changes multiple DRX parameters simultaneously to optimize both power consumption and service reliability. By adjusting the combination of onDurationTimer, drx-InactivityTimer, drx-RetransmissionTimer, and other parameters, the system can fine-tune the balance between sleep duration and wake-up responsiveness, ensuring both battery efficiency and service continuity are maintained.
2Reliability
If frequent data transfers are performed to maintain XR service quality, then service quality is improved, but battery consumption increases
Solution Approach 1:
The patent implements periodic DRX cycles where the terminal alternates between active monitoring periods and sleep periods. During active periods, data transfers occur to maintain XR service quality; during sleep periods, the terminal conserves battery power. This periodic pattern ensures service quality is maintained during necessary intervals while reducing overall energy consumption.
Solution Approach 2:
The patent applies partial action by monitoring control channels only during specific DRX active periods rather than continuously, and by using partial wake-up mechanisms where the terminal activates only necessary processing functions during sleep periods. This reduces battery consumption while maintaining sufficient service quality through selective, partial monitoring and data transfer.
3Speed
If DRX parameters are configured to extend active time for better service responsiveness, then service responsiveness is improved, but battery consumption increases
Solution Approach 1:
The patent uses preliminary action by pre-configuring DRX parameters and pre-scheduling data transfers during active periods. The terminal prepares for potential data transfers in advance during wake-up periods, and the base station schedules transmissions to coincide with predicted active periods. This reduces the need for extended active monitoring while maintaining service responsiveness through advance preparation.
Data Source
AI summary
A method and apparatus for enhanced discontinuous reception is provided. Method for discontinuous reception includes receiving a downlink RRC message from the base station, determining a method for determining the first timer start subframe based on the first DRX parameter and starting the first timer based on the determination. The terminal uses the first method if the first DRX parameter is absent. The terminal uses the second method if the first DRX parameter is present.