Target Wake Time Control for Adaptive Wi‑Fi Latency and Power

Solution Overview

Problem

Existing wireless communication technologies face challenges in determining optimal target wake time (TWT) parameters for diverse services with varying traffic characteristics, leading to inefficiencies in power consumption and latency, as they fail to adapt in real-time to changing network and service states.

Innovation Solution

A method and device for dynamically adjusting TWT parameters based on traffic state and interval information, allowing for real-time adaptation without releasing existing agreements, thereby optimizing power consumption and reducing latency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If TWT parameters are determined according to QoS requirements of various services, then quality of service is improved, but device complexity increases

Engineering Contradiction:

Improvequality of serviceVSAvoidparameter determination complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent segments TWT parameter determination by creating separate TWT agreements for different access categories (AC0-AC3), where each AC has its own TWT parameters optimized for specific traffic types. This segmentation allows QoS requirements to be met for different services while managing complexity through structured categorization rather than monolithic parameter control.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent implements dynamic TWT parameter adjustment by allowing the electronic device to modify TWT parameters in real-time based on current traffic characteristics and network state. The device can change TWT interval, target wake time, and other parameters dynamically without releasing existing TWT agreements, enabling adaptation to varying QoS requirements while maintaining operational simplicity.

Inventive Principle:

Principle #15Dynamics

2Loss of time

If TWT parameters are adjusted in real-time to match traffic characteristics, then latency is reduced, but power consumption increases

Engineering Contradiction:

Improvetraffic latencyVSAvoidpower consumption

Core Design Contradiction:

Loss of timeVSUse of energy by moving object

Solution Approach 1:

The patent implements dynamic TWT parameter adjustment by allowing the electronic device to modify TWT parameters in real-time based on current traffic characteristics and network state. The device can change TWT interval, target wake time, and other parameters dynamically without releasing existing TWT agreements, enabling adaptation to varying QoS requirements while maintaining operational simplicity.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes physical parameters of TWT operation including TWT interval, target wake time, and service period duration based on traffic characteristics. By adjusting these parameters dynamically - such as reducing TWT interval for high-latency-sensitive traffic or extending it for power-critical scenarios - the system optimizes the trade-off between latency reduction and power consumption.

Inventive Principle:

Principle #35Parameter changes

3Adaptability or versatility

If separate TWT parameters are configured for each service, then adaptability is improved, but device complexity increases

Engineering Contradiction:

Improveservice-specific configurationVSAvoidparameter management complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent segments TWT parameter determination by creating separate TWT agreements for different access categories (AC0-AC3), where each AC has its own TWT parameters optimized for specific traffic types. This segmentation allows QoS requirements to be met for different services while managing complexity through structured categorization rather than monolithic parameter control.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent creates a universal TWT management framework that handles multiple services and access categories through a common protocol and negotiation mechanism. The same TWT agreement structure and modification procedures apply across all ACs, providing multi-functionality that reduces management complexity while maintaining service-specific adaptability.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS12513563B2Providing target wake time control for reducing traffic latency and/or power consumption

Publication Date: 2025.12.30 SAMSUNG ELECTRONICS CO LTD

AI summary

A target wake time (TWT) control method of an electronic device according to an embodiment includes: obtaining a TWT parameter comprising TWT interval information based on a target wake (TWT) agreement with an access point; obtaining the next target wake time (TWT) agreement with an access point; obtaining the next target wake time (TWT) based on the TWT interval information included in the TWT parameter and a traffic state received from the access point; and transmitting a TWT information frame comprising the next target wake time to the access point.