Wireless Trigger Frames With Default Commands for Station Synchronization

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Solution Overview

Problem

Conventional wireless communication technologies face issues with frame missing due to interference in beacon frames, leading to unsynchronized stations and increased power consumption from waiting for traffic indication or next target wake time information.

Innovation Solution

Inserting self-defined user information into trigger frames, including default state commands like timestamp, buffer state report, or next target wake time, to enable stations to execute actions without waiting for subsequent frames.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If stations wait to receive beacon frames for time synchronization, then time synchronization accuracy is improved, but in complex environments beacon frames may be lost leading to frame loss and increased power consumption

Engineering Contradiction:

Improvetime synchronization accuracyVSAvoidframe loss risk

Core Design Contradiction:

Measurement precisionVSReliability

Solution Approach 1:

The patent embeds time synchronization information (timestamp) and default state commands directly into the trigger frame before transmission. Stations can perform time synchronization and execute default actions without waiting for separate beacon frames, eliminating the risk of beacon loss while maintaining synchronization accuracy.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent combines multiple functions (time synchronization, default state notification, and trigger information) into a single trigger frame. This merging eliminates the need for separate beacon frames, ensuring that synchronization information is always delivered with the trigger without being subject to beacon frame loss.

Inventive Principle:

Principle #5Merging (Combining)

2Measurement precision

If stations wait for subsequent information frames to execute actions, then action accuracy is improved, but transmission time delay increases and power consumption increases

Engineering Contradiction:

Improveaction execution accuracyVSAvoidtransmission time delay

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The patent embeds default state commands directly into the trigger frame, allowing stations to execute actions immediately upon receiving the trigger frame without waiting for subsequent information frames. This preliminary inclusion of action commands eliminates unnecessary waiting time and reduces power consumption while maintaining action execution accuracy.

Inventive Principle:

Principle #10Preliminary action

3Loss of information

If stations remain awake to receive all information frames, then information completeness is improved, but power consumption increases

Engineering Contradiction:

Improveinformation completenessVSAvoidstation power consumption

Core Design Contradiction:

Loss of informationVSUse of energy by moving object

Solution Approach 1:

The patent merges time synchronization information, default state commands, and trigger information into a single trigger frame. Stations can extract all necessary information from this consolidated frame and enter sleep mode immediately, ensuring information completeness while minimizing power consumption by avoiding prolonged wake periods.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The trigger frame preliminarily contains all necessary information (synchronization timestamp and default state commands) that stations would otherwise need to wait for in subsequent beacon or information frames. This allows stations to complete all necessary operations and enter sleep mode without risking information loss.

Inventive Principle:

Principle #10Preliminary action

4Adaptability or versatility

If beacon frames are used for time synchronization, then synchronization capability is improved, but in complex environments transmission reliability deteriorates

Engineering Contradiction:

Improvesynchronization capabilityVSAvoidbeacon frame reception reliability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent merges the time synchronization function with the trigger frame transmission. The timestamp is embedded directly in the trigger frame that is already being transmitted to initiate uplink transmissions, ensuring synchronization information is delivered reliably with the trigger without depending on separate beacon frame transmission that may be lost in complex environments.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS12628070B2Extension methods and wireless communication system

Publication Date: 2026.05.12 REALTEK SEMICON CORP

AI summary

The present disclosure provides an extension method, applied in a wireless communication system, the wireless communication system comprises a wireless access point and a plurality of stations, to which the wireless access point is connected, wherein the following steps are performed by the wireless communication system:the wireless access point generating a trigger frame according to a self-defined user information;the wireless access point broadcasting the trigger frame to the plurality of stations through a wireless channel;the plurality of stations receiving the trigger frame and then sending an information frame to the wireless access point;wherein, the self-defined user information comprises a default state command, by which existing in the self-defined user information, there would be not necessary to wait for subsequent information frames for time saving and energy conserving.