Communication Apparatus Priority-Based Wake-Up Frame Control
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Solution Overview
Problem
In wireless communication systems, especially those compliant with the IEEE 802.11ba standard, the efficient use of the communication band is hindered by the need to transmit wake-up frames to all WUR non-AP STAs each time data is received, leading to potential power wastage and bandwidth inefficiency.
Innovation Solution
A communication apparatus that selectively transmits WUR wake-up frames based on data priority, using a second communication unit with lower power consumption to determine when to transition the primary communication unit from a doze state to an awake state, thereby optimizing bandwidth use and power saving.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a WUR wake-up frame is transmitted each time data is received to ensure reliable data delivery, then data transmission reliability is improved, but communication band efficiency deteriorates
Solution Approach 1:
The patent changes the transmission parameter from 'transmit every time data is received' to 'transmit based on data priority and accumulated amount'. The WUR frame transmission is controlled by evaluating both the priority level of incoming data and the total amount of data accumulated in the buffer, transforming a frequency-based transmission approach into a condition-based approach that optimizes both reliability and bandwidth efficiency
2Loss of time
If a WUR wake-up frame is transmitted each time data is received to ensure timely data delivery, then data delivery timeliness is improved, but power consumption increases
Solution Approach 1:
The patent introduces a dual-parameter control mechanism that evaluates both data priority and accumulated data amount before triggering WUR frame transmission. This prevents unnecessary wake-up transmissions for low-priority or small-volume data, thereby reducing power consumption while maintaining timely delivery for high-priority data through conditional transmission rather than unconditional transmission
3Speed
If the primary communication unit operates continuously to maintain communication readiness, then communication responsiveness is improved, but power consumption increases
Solution Approach 1:
The patent implements a doze state mechanism where the primary communication unit (PCR) is put into a low-power state when no high-priority data is present. The system performs preliminary evaluation of data priority and amount, and only activates the PCR when necessary, rather than keeping it continuously active. This preliminary action approach maintains communication responsiveness for important data while significantly reducing power consumption during idle periods
Data Source
AI summary
If a communication apparatus transmits data to another communication apparatus and communication via a communication unit included in another communication apparatus is not performable, whether or not to transmit a frame for causing a transition to a state where the communication via the communication unit included in the other communication apparatus is performable is selected based on priority of the data.