RF Device Pairing via RF4CE Standardized Message Exchange
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Solution Overview
Problem
Existing radio frequency (RF) device pairing methods do not meet the RF4CE specification requirements, relying on private messages for confirmation, which hinders standardization and security, especially for devices without a pairing button.
Innovation Solution
The method involves using RF4CE specification-compliant pairing request and response messages to confirm pairing results, including a discovery request, response, first and second pairing requests, and responses, with button information matching to ensure secure pairing without private messages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If private messages are used to confirm pairing results, then pairing can be completed between RF devices, but the pairing process does not meet RF4CE specification requirements and standardization is hindered
Solution Approach 1:
The patent changes the message type parameter from private messages to standardized RF4CE pairing confirmation messages. The controlled device sends a pairing confirmation message containing a challenge value, and the remote controller responds with a verification message, transforming the confirmation mechanism to comply with RF4CE specifications while maintaining pairing reliability
2Ease of manufacture
If a pairing button is not disposed on the controlled device, then device design is simplified, but pairing result confirmation becomes complex requiring private messages
Solution Approach 1:
The controlled device performs self-confirmation of pairing by automatically sending a pairing confirmation message containing a challenge value to the remote controller. This eliminates the need for a physical pairing button on the controlled device while maintaining a simplified and standardized pairing process through automated message exchange
3Adaptability or versatility
If standardized pairing messages are used, then specification compliance is achieved, but additional message types and processing logic are required
Solution Approach 1:
The pairing confirmation process is segmented into distinct standardized message types: a pairing confirmation message containing a challenge value sent from the controlled device, and a verification message sent from the remote controller. This segmentation structures the complexity into manageable, standardized components that comply with RF4CE specifications
Data Source
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AI summary
A method for radio frequency device pairing includes: after a pairing instruction is received, sending a discovery request message to a second radio frequency device; receiving a discovery response message returned by the second radio frequency device; sending a first pairing request message to the second radio frequency device; receiving a first pairing response message returned by the second radio frequency device; after a button instruction entered by the user according to interface information displayed by the second radio frequency device is received, sending, to the second radio frequency device, a second pairing request message which contains button information corresponding to the button instruction; receiving a second pairing response message which is returned by the second radio frequency device and contains a confirmation result indicating that the button information and the interface information are successfully matched; exchanging keys with the target second radio frequency device, thereby completing pairing.