Vehicle Network Wake-Up Table for Fast Node Activation
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Solution Overview
Problem
Current vehicle network technologies face challenges in efficiently waking up communication nodes without a procedure for information exchange between Powered Devices (PD) and Power Sourcing Equipment (PSE), leading to delayed wake-up times and increased power consumption.
Innovation Solution
A method and apparatus that utilize a wake-up table to generate and transmit a wake-up signal, including an identifier for the wake-up reason, to wake up communication nodes directly, eliminating the need for PD-PSE information exchange, and allowing for immediate power supply based on pre-configured settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the PD-PSE information exchange procedure is performed during wake-up, then the communication node can be properly activated with correct power supply, but the wake-up time is delayed
Solution Approach 1:
The patent pre-configures wake-up tables in advance that map wake-up reasons to target communication nodes and their power requirements. When a wake-up event occurs, the system directly queries the pre-configured table instead of performing real-time information exchange, thereby achieving fast wake-up while ensuring correct power supply configuration
Solution Approach 2:
The patent dynamically determines whether to perform the full PD-PSE information exchange procedure based on the wake-up reason. For certain predefined wake-up reasons, the system skips the information exchange and directly activates the target node with pre-configured power settings, while for other reasons it performs the complete procedure
2Reliability
If the PD-PSE information exchange procedure is performed during wake-up, then the communication node can be properly activated, but power consumption increases due to unnecessary controller unit activation
Solution Approach 1:
The wake-up tables are pre-configured with all necessary information about target communication nodes and their power requirements. This allows the system to directly activate nodes based on pre-stored configurations without performing the energy-intensive PD-PSE information exchange procedure, thereby reducing power consumption while ensuring proper activation
Solution Approach 2:
The system uses pre-configured wake-up tables that contain self-contained information about target nodes and their power requirements. This eliminates the need for interactive information exchange between PD and PSE, allowing the system to self-determine the appropriate activation parameters without additional communication overhead
Data Source
AI summary
An operation method of a communication node in a vehicle network may include detecting a wake-up event; generating a wake-up signal including an identifier indicating a wake-up reason corresponding to the wake-up event based on a wake-up table, the wake-up table configured for storing the wake-up reason corresponding to the wake-up event, a target communication node configured to be woken up by the wake-up reason, and an operation power configured to be supplied to the target communication node; and transmitting the wake-up signal.