Access Point Power Saving Schedule for Wireless Networks
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Solution Overview
Problem
Existing wireless communication systems face challenges in managing power consumption efficiently in access points (APs), particularly in supporting delay-sensitive applications that require low latency and high throughput.
Innovation Solution
The implementation of a power saving schedule in the basic service set (BSS) by access points, which includes designated unavailable periods for frame exchange, allowing the AP to transition to a power saving mode and reducing energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the access point operates continuously to support delay-sensitive applications, then the service availability and response time are improved, but the energy consumption increases
Solution Approach 1:
The access point implements periodic operation by alternating between active periods (for serving STAs) and power saving periods (for energy conservation). The power saving schedule defines specific time windows when the AP is unavailable, creating a periodic pattern that balances service availability with energy consumption reduction.
2Use of energy by moving object
If the access point enters power saving mode frequently, then the energy consumption is reduced, but the latency for frame exchange increases
Solution Approach 1:
The access point performs preliminary actions by establishing the power saving schedule in advance and notifying all STAs before the schedule takes effect. This allows STAs to buffer outgoing frames and transmit them at appropriate times, preventing latency issues when the AP enters power saving mode.
3Reliability
If the access point maintains constant availability for frame exchange, then the communication reliability is improved, but the battery life of battery-powered APs deteriorates
Solution Approach 1:
The access point dynamically adjusts its operational state by transitioning between active and power saving modes according to the scheduled timeline. This dynamic behavior allows the AP to maintain communication reliability during active periods while extending battery life through periodic power saving states.
4Use of energy by moving object
If the access point implements power saving schedule with multiple unavailable periods, then the energy consumption is reduced, but the complexity of schedule management increases
Solution Approach 1:
The power saving schedule is segmented into distinct active periods and power saving periods, with each period clearly defined in the schedule information. This segmentation simplifies management by providing a structured, predictable pattern that STAs can easily track and respond to.
Data Source
AI summary
An access point (AP) in a wireless network, comprising a memory and a processor coupled to the memory, the processor configured to: establish a power saving schedule in a basic service set (BSS), wherein the power saving schedule includes one or more unavailable periods during which the AP is not available for frame exchange; transmit, to one or more stations STAs, a first frame that includes power saving schedule information; exchange, with the one or more STAs, one or more frames during a period that does not belong to the power saving schedule; and transition to a power saving mode during the one or more unavailable periods based on the power saving schedule.