Vehicle Message Forwarding by Validity Time and Range
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Solution Overview
Problem
Vehicle-to-infrastructure and vehicle-to-vehicle communication in intelligent transportation systems face delays and inefficiencies due to excessive information exchange, leading to increased overhead and reduced communication efficiency.
Innovation Solution
An electronic apparatus for vehicles and road side units that utilize processing circuitry to determine the effective time and range of messages, allowing vehicles to selectively forward messages based on these parameters, and for RSUs to generate and send messages with effective time and range information for vehicles to make forwarding decisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If vehicles broadcast all kinds of information to infrastructure and other vehicles, then information completeness is improved, but communication overhead increases and communication efficiency deteriorates
Solution Approach 1:
The patent segments information by introducing the concept of effective range and effective time for messages. Vehicles divide information transmission into targeted segments based on destination groups, sending messages only to vehicles within their effective range and time window, rather than broadcasting to all vehicles. This segmentation reduces redundant transmissions while maintaining information completeness for relevant recipients.
Solution Approach 2:
The patent applies local quality by making message transmission properties location-dependent and time-dependent. Each message carries effective range and effective time parameters that define its local validity. Vehicles adjust their transmission behavior based on their local position relative to the message source and the current time relative to the message's effective time window, optimizing communication efficiency for each local context.
2Loss of information
If vehicles forward all received messages, then information dissemination is improved, but message overhead increases and processing time increases
Solution Approach 1:
The patent applies preliminary action by pre-defining effective range and effective time parameters in messages before transmission. Vehicles perform preliminary filtering by comparing their position and current time against these pre-set parameters, determining whether to forward messages before actual transmission occurs. This preliminary assessment eliminates the need for complex real-time analysis and reduces processing time.
Solution Approach 2:
The patent implements partial action by having vehicles forward only those messages that are relevant to their destination group and current location, rather than forwarding all received messages. This selective forwarding reduces the total number of message transmissions while ensuring that all necessary information reaches its intended recipients within the effective time window.
3Loss of information
If vehicles exchange information with all surrounding vehicles and infrastructure, then information coverage is improved, but communication overhead increases
Solution Approach 1:
The patent segments the vehicle network into destination-based groups, where each vehicle identifies its target group for information exchange. Instead of communicating with all surrounding vehicles, vehicles segment their communication to only those within their destination group and effective range, reducing the quantity of communication interactions while maintaining comprehensive coverage for relevant vehicles.
Solution Approach 2:
The patent introduces dynamic parameters of effective range and effective time that change based on vehicle movement and message age. Vehicles dynamically adjust their communication behavior by evaluating whether they are currently within the effective range and time window of messages, allowing the system to adapt communication overhead to actual network conditions and vehicle distribution.
Data Source
AI summary
The present disclosure relates to an electronic device, a radio communication method, and a computer-readable storage medium. The electronic device of the present disclosure for use in a vehicle is configured to: receive a message, the message comprising a validity time of the message and a validity range of the message; and determine, on the basis of the validity time of the message and of the validity range of the message, whether to forward the message. The use of the electronic device, the radio communication method, and the computer-readable storage medium of the present disclosure optimizes an exchange process for vehicle-related information, thus reducing overhead and delays to the greatest extent, and thereby increasing communication efficiency.