Variable-Length Wake-Up Frame for Wireless Terminal Power Management
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Solution Overview
Problem
Existing wireless communication terminals face challenges in efficiently managing power consumption, particularly in high-density environments, where frequent wake-ups to receive wireless signals lead to increased energy usage and reduced battery life.
Innovation Solution
The implementation of a wireless communication terminal using a wake-up radio with a variable length Wake-Up frame, which allows for targeted wake-ups based on group identifiers and bitmap configurations, enabling more efficient power management by minimizing unnecessary wake-ups.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wireless communication terminals frequently wake up to receive wireless signals, then communication reliability is improved, but power consumption increases and battery life decreases
Solution Approach 1:
The patent segments the wake-up frame into multiple parts: a first wake-up frame containing a first group identifier for a first group of terminals, and a second wake-up frame containing a second group identifier for a second group of terminals. This segmentation allows different terminal groups to be woken up at different times, reducing the frequency of wake-ups for individual terminals while maintaining overall communication reliability.
Solution Approach 2:
The patent implements dynamic group management where terminals can be dynamically assigned to different groups (first group or second group) based on communication needs. The base station dynamically selects which group to wake up in each wake-up cycle, allowing flexible adaptation to changing communication patterns and reducing unnecessary wake-ups.
2Loss of time
If wireless communication terminals wake up frequently to check for signals, then response time to incoming communications is improved, but battery life is reduced
Solution Approach 1:
The patent divides terminals into multiple groups with different wake-up schedules. Each terminal only needs to wake up periodically to check for its group's wake-up frame, rather than constantly monitoring. This segmentation reduces the average wake-up frequency while ensuring that terminals respond promptly when their group is scheduled to receive communications.
Solution Approach 2:
The patent implements periodic wake-up schedules where different terminal groups wake up at different periodic intervals. This allows terminals to remain in low-power states for longer periods between wake-ups, extending battery life while maintaining acceptable response times through the structured periodic monitoring.
3Productivity
If all wireless communication terminals wake up simultaneously, then communication efficiency is improved, but power consumption increases due to synchronized wake-up cycles
Solution Approach 1:
The patent segments the terminal population into multiple groups that wake up at different times. This prevents simultaneous wake-ups of all terminals, distributing the energy consumption load across different time periods. Each group maintains communication efficiency within its wake-up window while avoiding the energy waste of all terminals waking simultaneously.
Solution Approach 2:
The patent uses dynamic group scheduling where the base station can flexibly assign terminals to different groups and adjust wake-up schedules based on communication patterns. This dynamic approach optimizes energy efficiency by avoiding synchronized wake-ups while maintaining communication efficiency through adaptive scheduling.
Data Source
AI summary
A wireless communication terminal for wireless communicating includes a first wireless transceiver transmitting and receiving a signal through a first waveform, a second wireless receiver receiving a signal through a second waveform different from the first waveform, and a processor. The processor may be configured to start receiving a variable length Wake-Up frame through the second wireless receiver, from a base wireless communication terminal of a basic service set (BSS) to which the wireless communication terminal belongs, determine whether or not a Frame Body field of the Wake-Up frame includes an identifier of the wireless communication terminal, when an ID field of the Wake-Up frame indicates an identifier of a group including the wireless communication terminal, and wake up the first wireless transceiver based on the Wake-Up frame, when the Frame Body field of the Wake-Up frame includes the identifier of the wireless communication terminal.