Inactivity Timer Handling Using Power Saving Signals in NR Terminals
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Solution Overview
Problem
Existing communication technologies face challenges in optimizing power saving performance during inactivity timer timeouts in terminals, particularly in New Radio (NR) systems, as they often result in inefficient power consumption due to unnecessary monitoring and processing.
Innovation Solution
Implementing an inactivity timer timeout processing method that determines whether to terminate the inactivity timer ahead of time based on power saving signals, such as Wake Up Signaling (WUS) or Going to Sleep (GTS) signals, allowing terminals to fall back to a default bandwidth part (BWP) or deactivate secondary cells (Scells) to conserve power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal continues monitoring PDCCH subframes during the inactivity timer timeout period, then the terminal can detect any incoming data transmissions, but the terminal consumes excessive power without necessary monitoring
Solution Approach 1:
The terminal performs preliminary actions by checking for power saving signals before the inactivity timer expires. This allows the terminal to proactively determine whether continuous PDCCH monitoring is necessary, avoiding unnecessary power consumption while ensuring data detection capability when needed.
Solution Approach 2:
The terminal autonomously monitors for power saving signals and self-determines whether to continue or terminate PDCCH monitoring based on the detected signal state. This self-service mechanism enables the terminal to adapt its power consumption behavior without requiring external control instructions.
2Use of energy by moving object
If the terminal terminates the inactivity timer ahead of time based on power saving signals, then the terminal can enter sleep state to save power, but the terminal may miss detecting data transmissions if the timer is terminated too early
Solution Approach 1:
The terminal uses power saving signals as feedback mechanisms to determine whether to terminate the inactivity timer. The presence or absence of these signals provides feedback about whether continuous monitoring is needed, allowing the terminal to make informed decisions about timer termination while maintaining reliable data detection.
Solution Approach 2:
The terminal performs preliminary checks for power saving signals before terminating the inactivity timer. This preliminary action ensures that the terminal only terminates the timer when it is safe to do so, preventing missed data transmissions while achieving power savings.
3Speed
If the terminal maintains active bandwidth parts and secondary cells during inactivity, then the terminal can quickly resume data transmission, but the terminal cannot achieve optimal power saving
Solution Approach 1:
The terminal dynamically adjusts its bandwidth part activation and secondary cell status based on the inactivity timer state and power saving signal detection. This dynamic behavior allows the terminal to switch between active and sleep states appropriately, optimizing both power consumption and transmission resumption speed.
Solution Approach 2:
The terminal employs periodic checking of power saving signals during the inactivity period, allowing it to periodically transition between active and power-saving states. This periodic action enables the terminal to maintain the capability to quickly resume transmission when needed while achieving significant power savings during idle periods.
Data Source
AI summary
An inactivity timer timeout processing method is provided in the present disclosure, the method is applied to a terminal, the terminal is provided with an inactivity timer which is running, and the method includes: acquiring a power saving signal; and performing an inactivity timer timeout processing according to the power saving signal.