MQTT Communication Apparatus for Vehicle Onboard Data Confirmation
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Solution Overview
Problem
Existing communication systems using the MQTT protocol cannot confirm whether information transmitted to an onboard vehicle apparatus has been successfully received by the apparatus.
Innovation Solution
A communication apparatus mounted on a vehicle that uses the MQTT protocol to receive first information from an external apparatus, transmit it to the onboard apparatus, and then receive confirmation (second information) from the onboard apparatus, subsequently notifying the external apparatus that the information has been received.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If MQTT protocol is used for communication between external apparatus and onboard apparatus, then communication efficiency is improved, but ability to confirm information reception is worsened
Solution Approach 1:
The patent implements a feedback mechanism where the communication apparatus receives acknowledgment information from the onboard apparatus confirming successful reception of data. This feedback loop allows the external apparatus to verify that information was successfully transmitted while maintaining MQTT protocol efficiency, thus resolving the contradiction between communication efficiency and reception confirmation capability.
2Device complexity
If simple MQTT communication is implemented, then device complexity is reduced, but reliability of data transmission confirmation is worsened
Solution Approach 1:
The patent employs preliminary action by having the onboard apparatus prepare and send acknowledgment information immediately upon successful data reception. This preliminary confirmation mechanism ensures reliable transmission verification without adding complex communication protocols, maintaining system simplicity while improving transmission reliability.
Data Source
AI summary
An object is to confirm that information transmitted to an onboard apparatus mounted on a vehicle has been transmitted to the onboard apparatus. A communication apparatus is mounted on a vehicle and performs specific communication according to an MQTT protocol. A controller of the communication apparatus receives first information transmitted to an onboard apparatus mounted on the vehicle from an external apparatus, which is a transmission source of the first information, by the specific communication, and transmits the received first information to the onboard apparatus. The controller of the communication apparatus receives second information showing that the onboard apparatus has completed reception of the first information, from the onboard apparatus. Then, when receiving the second information, the controller of the communication apparatus transmits third information notifying that the onboard apparatus has completed reception of the first information, to the external apparatus by the specific communication.