Vehicle Ethernet Network Management for Rapid IP Setup
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Solution Overview
Problem
Conventional vehicle internal communication networks face challenges with prolonged IP setup times using DHCP, especially when transitioning between dynamic and static address allocations, leading to increased startup times and reduced network flexibility.
Innovation Solution
A method and system for managing a vehicle Ethernet communication network that includes power-on, normal, sleep indication, wait bus sleep, and power-off modes, utilizing a DHCP server for efficient address allocation and network initialization, allowing for quick startup and flexible operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If dynamic address allocation using DHCP is used, then network flexibility is increased, but IP setup time is excessively long (about 10 seconds)
Solution Approach 1:
The system performs preliminary actions by pre-establishing communication channels and preparing address allocation resources before actual network connection is needed. The DHCP server is pre-configured and ready to allocate addresses immediately when devices join the network, eliminating the 10-second delay by having all necessary resources prepared in advance.
Solution Approach 2:
The patent implements a dynamic address allocation system that can adaptively adjust between different allocation modes based on network conditions. The system dynamically manages the DHCP server's address pool and can switch between rapid allocation and traditional DHCP processes depending on the specific network scenario, maintaining flexibility while reducing setup time.
2Loss of time
If static address allocation is used, then startup time is decreased, but network flexibility is deteriorated and address management becomes complex
Solution Approach 1:
The system implements self-service by enabling devices to automatically obtain IP addresses through the DHCP server without manual configuration. Each device on the network can independently request and receive address allocation, eliminating the need for users to manually manage static addresses while maintaining rapid startup performance.
Solution Approach 2:
The DHCP server is designed with multi-functionality, serving both rapid address allocation for startup scenarios and dynamic address management for flexible network configurations. This single system handles multiple functions including address assignment, lease management, and network configuration, replacing the need for separate static and dynamic management systems.
3Reliability
If multiple cameras are connected to Ethernet network with static address allocation, then network stability is improved, but user convenience is reduced due to complex address search and replacement
Solution Approach 1:
Each camera and network device automatically performs self-service by requesting IP addresses from the DHCP server upon connection. The system autonomously manages address allocation, conflict detection, and resolution without requiring user intervention for address search or replacement, thereby maintaining network stability while significantly improving user convenience.
Solution Approach 2:
The DHCP server implements feedback mechanisms to monitor network status, detect address conflicts, and dynamically adjust address allocation. When a camera is added or removed from the network, the system receives feedback and automatically recalibrates the address pool, ensuring network stability while eliminating manual address management tasks for users.
Data Source
AI summary
A system and method for managing a vehicle Ethernet communication network are disclosed. More specifically, each unit in a vehicle Ethernet communication network is configured to initially enter a power-on (PowerOn) mode when is applied to each unit of the vehicle to initialize operational programs. Once powered on, each unit enters a normal mode in which a node for each unit participates in a network to request the network. Subsequently, each unit enters a sleep indication (SleepInd) mode where other nodes are not requested even though the network has already been requested by the other nodes. A communication mode is then terminated at each unit and each unit enters a wait bus sleep (WaitBusSleep) mode in which all nodes connected to the network are no longer in communication and are waiting to switch to sleep mode. Finally, each unit is powered off to prevent communication between units in the network.