WLAN Transceiver Power Management via IFS Periodic Control
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Solution Overview
Problem
Wireless Local Area Network (WLAN) devices consume unnecessary power during InterFrame Space (IFS) periods due to ongoing data reception, which is not utilized for data transmission, leading to inefficient power management.
Innovation Solution
A method and device that disable the transceiver module for a first period based on IFS after data transmission, followed by enabling it to receive subsequent data, and further suspend the baseband module for an additional period to reduce power consumption during idle times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the transceiver module remains enabled during IFS periods to receive data, then data reception capability is maintained, but power consumption increases unnecessarily
Solution Approach 1:
The transceiver module is enabled and disabled periodically based on the IFS timing structure. After each data transmission, the module is disabled for the duration of the IFS period, and re-enabled only when needed for the next transmission or reception, creating a periodic on-off pattern that eliminates idle power consumption
Solution Approach 2:
The controller module determines in advance whether data transmission is scheduled during the IFS period. If no transmission is scheduled, the transceiver module is proactively disabled before the IFS period begins, preventing unnecessary power consumption while ensuring readiness when needed
2Use of energy by moving object
If the transceiver module is disabled during IFS periods to save power, then power efficiency improves, but data reception may be missed
Solution Approach 1:
The controller module continuously monitors the transmission buffer and scheduling information to determine whether data will be transmitted during the IFS period. This feedback mechanism ensures the transceiver module is disabled only when safe to do so, maintaining data reception reliability while improving power efficiency
Solution Approach 2:
The operational state of the transceiver module is dynamically adjusted based on real-time transmission scheduling. The module transitions between enabled and disabled states according to the actual data traffic pattern and IFS timing, optimizing power consumption without compromising reception reliability
Data Source
AI summary
A method and device of receiving WLAN data. The device comprises a transceiver module and a controller module. The transceiver module transmits first data and receives second data. The controller module is coupled to the transceiver module, and disables the transceiver module for a first period based on interframe space (IFS), upon completion of data transmission in the transceiver module.