Relay Node Activation Message Integration for In-Vehicle Networks
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Solution Overview
Problem
Existing in-vehicle network systems face challenges in efficiently addressing the challenges of existing in-vehicle network systems, particularly in reducing the communication amount of messages related to the control of activation states, which leads to increased processing load and power consumption due to unnecessary node activations.
Innovation Solution
Implementing a system with multiple relay nodes and end nodes, where relay nodes integrate activation messages from multiple end nodes during a buffering period and transfer integrated activation messages to different communication ports, reducing redundant message transmission and processing load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If relay nodes forward activation messages from multiple end nodes individually, then all end nodes can be activated, but the communication amount of messages increases significantly
Solution Approach 1:
The patent merges multiple activation messages received from different end nodes into a single integrated activation message. The relay node collects activation requests from multiple end nodes, combines them, and forwards one consolidated message to the target end node, thereby reducing the total number of messages transmitted across the network while ensuring all necessary activations are communicated.
Solution Approach 2:
The relay node performs preliminary processing of activation messages by buffering and integrating them before forwarding. Instead of immediately forwarding each received activation message, the relay node temporarily stores them, combines multiple messages into one, and then transmits the integrated message, reducing communication overhead in advance.
2Measurement precision
If individual activation messages are transmitted to each end node, then precise activation control is achieved, but processing load increases
Solution Approach 1:
The patent combines multiple individual activation messages into a single integrated message that contains activation information for multiple end nodes. This merging process reduces the number of separate processing operations required at each relay node and end node, thereby decreasing the overall processing load while maintaining precise activation control through the integrated message format.
3Reliability
If multiple activation messages are transmitted, then all necessary nodes are activated, but power consumption increases due to unnecessary activations
Solution Approach 1:
The patent integrates multiple activation requests into a single message that specifies exactly which nodes need to be activated. By consolidating activation requests and including precise node identification information in the integrated message, the system avoids unnecessary node activations and the associated power consumption that would occur with individual message transmissions to all nodes.
Data Source
AI summary
An in-vehicle network system, a relay node, or an activation message transfer method causes an end node to transition from a sleep state to a wake-up state when an activation condition is satisfied and transmit an activation message including activation request information indicating an activation cluster, causes the end node to transition from the sleep state to the wake-up state when receiving the activation message, generates integration activation request information and an integration activation message, and transfers the integration activation message.