Vehicle Relay Protocol Notification for Low-Load In-Car Communication
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Solution Overview
Problem
Existing vehicle-mounted devices with different communication protocols face challenges in establishing communication due to increased processing load and communication volume in the gateway processing unit, leading to inefficiencies and potential retransmissions.
Innovation Solution
A vehicle-mounted relay device that notifies devices of a common protocol before communication, allowing devices to switch protocols if necessary, thereby reducing the need for conversion processing and minimizing load and communication volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If protocol conversion is performed by the gateway processing unit for all communications between networks, then communication compatibility between different protocols is improved, but the processing load of the gateway processing unit increases
Solution Approach 1:
The patent divides the network into multiple domains, each with its own gateway processing unit. Protocol conversion is performed locally within each domain rather than centrally, segmenting the processing load across multiple units and preventing any single gateway from becoming a bottleneck.
Solution Approach 2:
The patent performs protocol conversion in advance at the source network before data transmission, rather than converting at the destination gateway. This preliminary action reduces the real-time processing load on gateway units during actual communication operations.
2Adaptability or versatility
If protocol conversion is performed by the gateway processing unit for all communications, then communication compatibility between different protocols is improved, but the communication volume between networks increases
Solution Approach 1:
The patent allows each network domain to maintain its own protocol characteristics and conversion requirements. Only necessary protocol conversions are performed at domain boundaries, avoiding unnecessary universal conversion of all communication data and reducing overall communication volume.
3Ease of operation
If communication is attempted between devices with different protocols without prior notification, then device autonomy is maintained, but communication failures and retransmissions occur
Solution Approach 1:
The patent performs preliminary protocol compatibility notification before actual communication begins. Devices are informed of the protocols to be used in advance, allowing them to prepare appropriate handling mechanisms and avoid communication failures during actual data transmission.
Solution Approach 2:
The patent implements a feedback mechanism where gateway processing units notify other devices about protocol usage. This feedback allows receiving devices to adjust their communication settings accordingly, ensuring reliable communication while maintaining device autonomy through informed decision-making.
Data Source
AI summary
The vehicle-mounted relay device in a vehicle-mounted communication system provided with a plurality of vehicle-mounted devices, the vehicle-mounted relay device includes: a relay unit configured to relay communication data between the plurality of vehicle-mounted devices; and a processing unit configured to, before communication is started between the vehicle-mounted devices, notify the vehicle-mounted devices of a common protocol that is a common communication protocol to be used.