Terminal Wake-Up Signaling for Energy-Saving Network Nodes
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Solution Overview
Problem
Existing communication systems lack a solution to wake up network side devices from an energy saving state to a non-energy saving state, leading to prolonged energy saving states that affect communication performance.
Innovation Solution
A terminal sends a wake-up signal (WUS) to a network side device based on configuration information, enabling the device to switch from an energy saving state to a non-energy saving state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the network side device switches to energy saving state and sends only sparse SSB, then energy consumption is reduced, but communication performance deteriorates due to inability to wake up the device
Solution Approach 1:
The patent introduces a terminal device as an intermediary to send wake-up signals to the network side device. The terminal acts as a mediator that triggers the network side device to transition from energy saving state to active state, solving the problem of how to wake up the device without requiring continuous monitoring by the network side device itself.
Solution Approach 2:
The network side device is configured with pre-defined wake-up signal parameters and configuration information that enable it to autonomously recognize and respond to wake-up signals. When a wake-up signal is detected, the device automatically transitions from energy saving state to active state and performs necessary communications, serving itself without requiring external control or continuous power consumption for monitoring.
2Loss of energy
If the network side device stays in energy saving state for long time, then energy consumption is reduced, but communication responsiveness worsens
Solution Approach 1:
The network side device pre-configures wake-up signal parameters, including time-frequency positions and signal characteristics, before entering energy saving state. This preliminary preparation enables the device to quickly recognize and respond to wake-up signals without requiring extensive processing or configuration when woken up, thereby reducing wake-up time delay while maintaining energy savings.
3Device complexity
If the network side device sends only special SSB in energy saving state, then device complexity is reduced, but system functionality worsens due to lack of complete system information
Solution Approach 1:
The patent segments the system information transmission into two parts: essential synchronization information transmitted via sparse SSB during energy saving state, and complete system information transmitted after wake-up. This segmentation allows the device to maintain low complexity during energy saving while ensuring complete system information is available when needed for full system operation.
Data Source
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AI summary
This application discloses a transmission method and apparatus, a terminal, and a network side device, and pertains to the field of communication technologies. The transmission method in embodiments of this application includes: A terminal receives first information, where the first information is used to determine first WUS configuration information; and the terminal sends a WUS to a first network side device based on the first information.