Wireless Access Point Power-Saving Adaptation for Reliable Traffic

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Solution Overview

Problem

Existing wireless access points (APs) face challenges in efficiently managing power consumption while maintaining performance, range, availability, and interoperability, particularly in dynamic power saving modes.

Innovation Solution

APs dynamically enable or disable power saving modes based on traffic characteristics and device capabilities, using a utility function to calculate power save gains versus overhead, and adapt listening modes to maintain communication quality and reliability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If an AP remains in active mode to maintain full reception capability, then communication performance and reliability are improved, but power consumption increases

Engineering Contradiction:

Improvecommunication reliabilityVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The AP dynamically switches between active mode and listening mode based on traffic characteristics and device capabilities. The system determines whether to enable power saving mode by evaluating traffic patterns, STA capabilities, and power save parameters, allowing the AP to adapt its operational state rather than remaining static in active mode

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system changes operational parameters including power save mode status, listen interval values, and traffic characteristic thresholds. By monitoring traffic characteristics and adjusting power save parameters, the system optimizes the balance between power consumption and communication reliability

Inventive Principle:

Principle #35Parameter changes

2Use of energy by moving object

If an AP enables dynamic power saving mode to reduce power consumption, then energy efficiency is improved, but communication performance and availability may deteriorate

Engineering Contradiction:

Improvepower consumptionVSAvoidcommunication availability

Core Design Contradiction:

Use of energy by moving objectVSReliability

Solution Approach 1:

The system continuously monitors traffic characteristics and STA capabilities, using this feedback to dynamically adjust power saving mode operations. The AP evaluates whether to enable or disable power saving mode based on real-time traffic patterns and device capabilities, ensuring communication requirements are met while optimizing power consumption

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system performs preliminary evaluation of traffic characteristics and device capabilities before enabling power saving mode. By assessing traffic patterns, STA power saving capabilities, and power save parameters in advance, the system ensures that power saving mode can be safely enabled without compromising communication availability

Inventive Principle:

Principle #10Preliminary action

3Use of energy by moving object

If an AP dynamically adapts power saving parameters based on traffic characteristics, then power efficiency is improved, but device complexity increases

Engineering Contradiction:

Improvepower consumptionVSAvoidcontrol complexity

Core Design Contradiction:

Use of energy by moving objectVSDevice complexity

Solution Approach 1:

The system automatically monitors traffic characteristics, evaluates STA capabilities, and adjusts power saving parameters without manual intervention. The AP self-determines whether to enable power saving mode and configures appropriate parameters based on observed traffic patterns and device capabilities, reducing the need for complex external control mechanisms

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS20250330905A1Dynamic power saving mode adaptations for wireless access points

Publication Date: 2025.10.23 QUALCOMM INC

AI summary

This disclosure provides methods, components, devices and systems for dynamic power saving mode adaptations for wireless access points (APs). Some aspects more specifically relate to dynamically enabling or disabling a power saving mode at an AP, adapting the dynamic power saving mode at the AP, or a combination thereof. In some examples, an AP may selectively enable or disable a power saving mode of the AP based on traffic characteristics associated with STAs communicating with the AP or one or more device characteristics associated with the STAs. The AP may then transmit an indication to the STAs of the power saving mode being enabled or disabled at the AP. In some other examples, the AP may monitor uplink transmissions from the STAs while in the power saving mode. The AP may then transmit an indication of a change in parameters of the power saving based on monitoring the uplink transmissions.