Wi-Fi Beacon Wakeup Timing for Low-Power IoT Stations
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Solution Overview
Problem
In IoT systems, stations consume excessive power when transitioning to the awake state based on preconfigured wakeup periods, even if the access point does not send buffered packets, leading to inefficient power usage.
Innovation Solution
A station adjusts its wakeup period based on detection information, such as beacon packet reception times, to optimize power consumption by extending the actual wakeup period beyond the preconfigured period.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the station transitions to the awake state based on a preconfigured wakeup period, then the station can receive beacon packets from the access point, but the station consumes excessive power when the access point does not send buffered packets
Solution Approach 1:
The station dynamically adjusts its wakeup period based on detected beacon packet transmission patterns. Instead of using a fixed preconfigured wakeup period, the station monitors the actual beacon transmission intervals and adapts its wakeup schedule accordingly, transitioning from a static to a dynamic wakeup mechanism that responds to network conditions
Solution Approach 2:
The station implements a feedback mechanism by detecting the actual beacon packet transmission times from the access point and using this information to adjust future wakeup periods. The station measures the time interval between consecutive beacons and uses this feedback to optimize its wakeup schedule, creating a closed-loop control system that continuously improves energy efficiency
2Device complexity
If the station uses a preconfigured wakeup period, then the wakeup schedule is simple to implement, but the station cannot adapt to varying beacon transmission intervals
Solution Approach 1:
The wakeup schedule transitions from a static preconfigured period to a dynamic adaptive period. The station continuously monitors beacon transmission intervals and adjusts its wakeup period accordingly, allowing the system to adapt to varying network conditions while maintaining implementation feasibility through a systematic adaptation approach
Solution Approach 2:
The station changes the wakeup period parameter based on detected beacon transmission patterns. By monitoring the actual time intervals between beacons and adjusting the wakeup period parameter dynamically, the station adapts to varying network conditions without requiring complex reconfiguration, simply by modifying the timing parameter based on observed patterns
Data Source
AI summary
Embodiments of this application provide a Wi-Fi communication method and apparatus, and relate to the wireless communication field. A station may obtain detection information including a start time point at which an access point actually starts to send a beacon packet to the station for one time, obtain a low power consumption parameter based on the detection information and a first time interval, and receive the beacon packet from the access point based on the low power consumption parameter. The low power consumption parameter includes an actual wakeup period of the station and an actual receive window length within which the station receives the beacon packet, or the low power consumption parameter includes an actual wakeup period of the station, and the actual wakeup period of the station is greater than a preconfigured wakeup period of the station.