Zonal Vehicle Network Architecture for Real-Time Data Transmission
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Solution Overview
Problem
The increasing data transmission volume in vehicles due to advanced functionalities like automated driving and entertainment poses challenges for efficient data transmission, particularly in preventing delays and ensuring real-time communication across zones in vehicle networks.
Innovation Solution
A communication system that employs a dual-network architecture, combining a wired first network for zone interconnection with wireless second networks within each zone, allowing for high-reliable and real-time data transmission, and enabling zone control nodes to act as access points and backup points for neighboring zones, thus enhancing data transmission efficiency and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless communication is used throughout the entire vehicle network, then ease of installation and flexibility are improved, but data transmission reliability and real-time performance deteriorate
Solution Approach 1:
The vehicle network is segmented into multiple zones (driver zone, passenger zone, trunk zone, etc.), each with its own access point. This segmentation allows different communication modes to be applied in different zones, combining wired backbone for reliability and wireless access for flexibility.
Solution Approach 2:
Access points serve as intermediaries between the wired backbone network and wireless devices. The access points are connected via wired connections to ensure reliable data transmission, while providing wireless access to devices in each zone, thus mediating between reliability and flexibility requirements.
2Reliability
If wired connections are used for all communication, then data transmission reliability is improved, but device complexity and installation difficulty increase
Solution Approach 1:
The network is divided into backbone segments (wired) and access segments (wireless). The wired backbone connects access points with high reliability, while wireless connections are used only for device access in each zone, reducing overall system complexity.
Solution Approach 2:
Different communication qualities are applied locally: wired connections with high reliability are used for the backbone infrastructure, while wireless connections with easier installation are used for device access in each zone, optimizing the overall system.
3Device complexity
If a single network is used for all zones, then network simplicity is maintained, but data transmission efficiency and real-time performance deteriorate due to traffic congestion
Solution Approach 1:
The network is segmented into multiple zone-specific networks, each handling local traffic independently. This prevents traffic congestion that would occur in a single network, as each zone's traffic is localized and can be managed independently.
Solution Approach 2:
The network architecture transitions from a flat single-network structure to a hierarchical multi-dimensional structure with backbone networks and zone-specific access networks, enabling parallel traffic handling across different dimensions.
4Adaptability or versatility
If wireless communication is used in all zones, then ease of device integration is improved, but data transmission delays increase
Solution Approach 1:
The network is segmented so that time-sensitive backbone traffic travels over wired connections while less time-critical device access traffic uses wireless connections, reducing overall transmission delays.
Solution Approach 2:
Different transmission qualities are applied locally: wired connections with low delay are used for backbone infrastructure, while wireless connections with easier device integration are used for device access, optimizing both speed and ease of integration.
Data Source
AI summary
The present technology relates to a communication device, a communication method, and a vehicle that allow an improvement in data transmission efficiency in the vehicle.The communication device includes a first communication unit configured to perform communication over a first network that interconnects a plurality of zones in a vehicle, and a second communication unit configured to perform wireless communication over a second network formed in a first zone that is one of the plurality of zones. The present technology is applicable to, for example, a communication system provided in a vehicle.