Vehicle Relay Frame Acquisition for New Network Node Integration
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Solution Overview
Problem
Existing technologies fail to efficiently acquire network information when a new function unit is added to a vehicle's in-vehicle network, leading to potential communication delays and increased processing loads.
Innovation Solution
A relay device installed in the vehicle detects and relays frames between function units to acquire network configuration information of a lower order than the application layer, allowing easy acquisition of function unit information without additional frame transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a new function unit is added to the in-vehicle network, then network functionality and versatility are improved, but communication delays and processing loads increase due to inefficient network information acquisition
Solution Approach 1:
The relay device acquires network configuration information (such as VLAN IDs, IP addresses, subnet masks) in advance when a new function unit is detected and connected to the network. This preliminary acquisition of information allows the relay device to be prepared for efficient communication routing before actual data transmission begins, preventing communication delays that would occur if information were acquired reactively after connection establishment.
Solution Approach 2:
The relay device serves as an intermediary between the new function unit and the existing network infrastructure. It actively intercepts and processes communication frames to extract network configuration information, then uses this information to intelligently relay and manage communications. This intermediary role enables the relay device to optimize information flow and reduce communication delays by making informed routing decisions based on acquired network topology data.
2Ease of manufacture
If traditional methods are used to acquire network information, then simplicity of implementation is maintained, but processing loads increase due to additional frame transmission and information gathering
Solution Approach 1:
The relay device merges the network information acquisition function with its existing frame relaying function. Instead of implementing a separate information gathering mechanism, the relay device extracts network configuration information (VLAN IDs, IP addresses, subnet masks) from the same communication frames it is already processing for relaying. This consolidation eliminates redundant processing steps and reduces overall processing loads while maintaining implementation simplicity.
Solution Approach 2:
The relay device performs self-service by automatically acquiring network configuration information from the communication frames it intercepts during normal operation. Rather than requiring external configuration or additional dedicated information exchange protocols, the relay device extracts necessary network topology data from existing traffic, thereby reducing processing loads associated with separate information gathering operations.
3Stability of the object's composition
If network information is acquired after function unit addition, then system stability is maintained, but information acquisition efficiency decreases requiring additional communication overhead
Solution Approach 1:
The relay device performs preliminary acquisition of network configuration information immediately when a new function unit is detected and during the initial connection establishment phase. By obtaining network topology data (VLAN IDs, IP addresses, subnet masks) in advance rather than waiting for subsequent communication needs, the system maintains stability through gradual integration while simultaneously improving information acquisition efficiency and eliminating the need for additional communication overhead later.
Data Source
AI summary
An information of a network to which a new function unit has been added is easily acquired. A relay device installed in a vehicle includes: a detection unit configured to detect a new function unit being a function unit that is newly added to a network including an existing function unit being one or a plurality of function units; a relay unit configured to relay a frame between the function units; and an acquisition unit configured to acquire, from the frame, relayed by the relay unit, between the new function unit detected by the detection unit and the existing function unit, function unit information that includes information regarding a network configuration of a layer of a lower order than an application layer, the function unit information being of at least one of the new function unit and the existing function unit.