Wireless Provisioning State Shift to Prevent DPP-WPS Conflicts

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Solution Overview

Problem

Existing communication devices face challenges in establishing wireless connections due to the premature termination of Wi-Fi Protected Setup (WPS) processes, leading to failures in Device Provisioning Protocol (DPP) connections, and subsequent inability to establish connections using alternative schemes.

Innovation Solution

A communication device is configured to execute processes according to both DPP and alternative wireless connection schemes, shifting its state after sending an authentication response to prevent parallel execution of conflicting processes, thereby reducing the likelihood of connection failures.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the WPS process is stopped after receiving a code exchange request to prioritize DPP scheme execution, then the reliability of DPP connection establishment is improved, but if the DPP scheme fails, the ability to establish connection using alternative schemes is lost

Engineering Contradiction:

Improvereliability of DPP connection establishmentVSAvoidability to switch to alternative connection schemes

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent implements dynamic state transitions for the WPS process based on DPP authentication progress. The WPS process is stopped only after authentication response transmission succeeds, but can be restarted if DPP connection establishment fails. This dynamic control resolves the contradiction by adapting the WPS process state to the actual authentication progress and connection status, ensuring both DPP reliability and fallback capability.

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If the WPS process continues to run in parallel with DPP scheme execution, then the ability to establish alternative connections is maintained, but connection failures increase due to conflicting processes

Engineering Contradiction:

Improveability to establish alternative connectionsVSAvoidconnection establishment success rate

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent applies preliminary action by stopping the WPS process in advance after successful authentication response transmission, before DPP connection establishment is fully completed. This prevents potential conflicts between parallel WPS and DPP processes while maintaining connection reliability. The timing of stopping WPS is carefully chosen to ensure authentication progress is secured before eliminating the alternative path.

Inventive Principle:

Principle #10Preliminary action

3Productivity

If the WPS process is stopped early to focus on DPP authentication, then processing efficiency is improved, but the risk of complete connection failure increases if DPP establishment fails

Engineering Contradiction:

Improveprocessing efficiency of authenticationVSAvoidoverall connection establishment reliability

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent implements beforehand cushioning by maintaining the option to restart the WPS process if DPP connection establishment fails. This creates a safety net that cushions against complete connection failure. The system stops WPS early to improve efficiency during successful DPP authentication, but the ability to restart WPS provides a backup mechanism that prevents total connection failure.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Data Source

PatentUS12490099B2Communication device and non-transitory computer-readable recording medium storing computer-readable instructions for communication device

Publication Date: 2025.12.02 BROTHER KOGYO KK

AI summary

A communication device may execute a first process according to a Device Provisioning Protocol (DPP) scheme, execute a second process according to a first wireless connection scheme different from the DPP scheme; and shift a state of the communication device. The first process may include, under a situation where the state of the communication is a first state, receiving an authentication request from a first external device, sending an authentication response to the first external device, and establishing a first wireless connection with a second external device. A communication device may be configured to shift the state of the communication device from the first state to a second state after the authentication response has been sent to the first external device and before the first wireless connection is established with the second external device.