Network Device Wake-Up Signaling for Sleep-State Base Stations
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Solution Overview
Problem
Existing methods for reducing energy consumption in base stations by putting them in a sleep state do not efficiently manage the wake-up process, leading to suboptimal communication performance in heterogeneous networks.
Innovation Solution
A method and device for waking up network devices by transmitting wake-up signals with controlled power levels and signal quality indication, allowing selection of the best network device for communication, ensuring efficient energy management and communication effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the base station is put in a sleep state to reduce energy consumption, then energy consumption is reduced, but communication performance deteriorates when wake-up is needed
Solution Approach 1:
The system performs preliminary actions by having the terminal send wake-up signals to multiple network devices in advance before actual communication is needed. This allows network devices to be proactively woken up with sufficient notice, enabling them to transition from sleep state to active state in time, thus ensuring communication performance while maintaining energy savings during sleep periods.
Solution Approach 2:
The system dynamically adjusts the wake-up state of network devices based on actual communication needs. Network devices can switch between sleep state and active state dynamically, with the terminal controlling which devices are woken up and when. This dynamic state management optimizes the balance between energy consumption and communication performance.
2Reliability
If wake-up signals are transmitted to multiple network devices, then communication reliability is improved, but energy consumption increases
Solution Approach 1:
The system applies local quality by sending wake-up signals to different network devices with different transmit powers based on their individual characteristics and distances from the terminal. The terminal determines appropriate transmit powers for wake-up signals sent to different network devices, allowing each device to be woken up efficiently without unnecessarily consuming energy in other devices.
Solution Approach 2:
The system changes parameters by adjusting the transmit power of wake-up signals based on path loss and signal quality requirements. The terminal calculates appropriate transmit powers for wake-up signals sent to multiple network devices, ensuring each receives sufficient signal quality while minimizing total energy consumption across all wake-up operations.
3Measurement precision
If transmit power for wake-up signal is increased, then signal quality is improved, but energy consumption increases
Solution Approach 1:
The terminal determines the appropriate transmit power for wake-up signals by calculating path loss between the terminal and each network device. This parameter adjustment ensures that each wake-up signal is transmitted with just enough power to achieve the required signal quality at the receiving network device, avoiding excessive power consumption while maintaining adequate signal quality.
Data Source
AI summary
A device, computer readable medium and method for waking up a network device, involving user equipment, a first network device, and a second network device. The method includes determining and transmitting a wake-up signal from the user equipment based on transmit power, which is dynamically adjusted using communication protocol parameters such as initial transmit power, step increments, and maximum power thresholds. Wake-up signals are transmitted multiple times within a set period to ensure reliable reception. The first network device processes the wake-up signal, assesses signal quality, and interacts with the second network device to determine wake-up conditions based on agreed communication protocols and signal quality thresholds. The second network device manages wake-up coordination among multiple first network devices, identifying devices meeting quality conditions and transmitting wake-up indications and configuration details.