Multi-Controller CHIP Networking for Cloud-Free Smart Home Control
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Solution Overview
Problem
Existing smart home devices face compatibility issues due to the lack of standardized communication protocols, leading to difficulties in controlling and monitoring IoT devices across multiple controllers without relying on a shared account or cloud, which limits the usability and convenience of smart home systems.
Innovation Solution
A method and apparatus for configuring multiple controllers in a wireless LAN system, allowing an accessory STA to connect to and be controlled by multiple CHIP networks using secure channels based on public keys and operational credentials, enabling independent controllers to manage IoT devices within a smart home environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple controllers are enabled in CHIP networks, then compatibility and usability of smart home systems are improved, but device complexity increases
Solution Approach 1:
The patent segments the control authority by allowing each controller to independently manage its own CHIP network and accessories. Each controller operates as an independent entity with its own security credentials, avoiding the need for a centralized cloud account. This segmentation enables multiple controllers to coexist without creating a single complex centralized system.
Solution Approach 2:
The patent implements universality by enabling accessory devices to join multiple CHIP networks simultaneously. Accessories are equipped with multi-network joining capabilities that allow them to be controlled by different controllers independently. The standardized CHIP protocol provides universal compatibility across controllers without requiring controller-specific custom implementations.
2Ease of operation
If independent controllers operate without shared account or cloud, then ease of operation is improved, but reliability of control may worsen
Solution Approach 1:
The patent introduces operational credentials as an intermediary mechanism that enables reliable communication between independent controllers and accessories. Each controller possesses unique operational credentials that serve as a trust intermediary, allowing accessories to authenticate and communicate with specific controllers without requiring cloud accounts. This credential-based intermediary maintains reliability while preserving operational independence.
3Adaptability or versatility
If accessory STA connects to multiple CHIP networks, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamic network joining where accessory devices can flexibly connect to and disconnect from different CHIP networks based on operational needs. The accessory maintains the ability to dynamically switch between multiple networks without requiring complex configuration, as each network connection is established through standardized CHIP onboarding procedures that can be independently executed.
Data Source
AI summary
Proposed are a method and an apparatus in which a plurality of CHIP controllers control an accessory STA in a wireless LAN system in a smart home environment. Particularly, the accessory STA performs a connection procedure for a first CHIP network to which a first controller belongs. The accessory STA receives a set configuration request message from the first controller. The accessory STA transmits a set configuration response message to the first controller. The accessory STA performs a connection procedure for a second CHIP network to which a second controller belongs.