Terminal Device Dual Wakeup Indications for Missed Signals
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Solution Overview
Problem
Terminal devices fail to wake up when required, leading to data receiving and sending delays due to missed wakeup indications, which can be caused by channel quality deterioration, false detection, or insufficient time-frequency resources.
Innovation Solution
Implementing a dual wakeup indication mechanism, comprising a first and a second wakeup indication, to ensure terminal devices wake up as needed, even if the first indication is not detected, thereby reducing data delays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single wakeup indication mechanism is used, then the system complexity is low, but the reliability of terminal device wakeup is insufficient
Solution Approach 1:
The single wakeup indication is segmented into two independent wakeup indications (first wakeup indication and second wakeup indication). Each indication operates independently to wake up the terminal device, providing redundancy. If one indication is missed due to channel quality deterioration or false detection, the other indication can still successfully wake up the terminal, thereby improving wakeup reliability without requiring complex coordinated mechanisms.
Solution Approach 2:
The system employs a prior cushioning strategy by configuring two wakeup indications before the terminal device needs to wake up. This redundant preparation ensures that even if the first wakeup indication is not detected due to channel issues or false detection, the second wakeup indication serves as a pre-prepared backup to ensure the terminal wakes up reliably. This approach cushions against potential failures without adding complex real-time decision mechanisms.
2Loss of time
If a single wakeup indication is used, then the configuration is simple, but data receiving and sending delays occur when wakeup indication is missed
Solution Approach 1:
The wakeup indication function is segmented into two separate indications that can be transmitted at different times or through different channels. This segmentation ensures that if the first wakeup indication is missed (causing data delay), the second wakeup indication provides an alternative path to wake up the terminal device and resume data transmission, thereby reducing the loss of time without requiring a single complex high-reliability mechanism.
3Reliability
If the terminal device monitors only one wakeup indication, then the power consumption is lower, but the wakeup detection reliability is insufficient
Solution Approach 1:
The terminal device is configured with two wakeup indications as a prior cushioning measure. The terminal monitors both indications during its active periods, and if the first wakeup indication is not detected (due to channel quality deterioration or false detection), the second wakeup indication serves as a pre-prepared backup. This approach improves wakeup detection reliability while keeping the power consumption manageable, as the terminal only needs to monitor these indications during its scheduled active periods in the DRX cycle rather than continuously.
Data Source
AI summary
This application provides a terminal device wakeup method and apparatus, a network device, and a terminal device. The method includes: receiving, by a first terminal device, configuration information of a first wakeup indication from a network device, the first wakeup indication is used to indicate whether the first terminal device is to wake up; detecting, by the first terminal device, the first wakeup indication based on the configuration information; and waking up, by the first terminal device, in a case that the configuration information comprises first indication information and the first wakeup indication is not detected. By this method, a terminal device can be woken up when required, so as to reduce a case in which the terminal device needs to wake up but does not wake up, thereby reducing a possibility of a data transmission delay caused by the case.