V2X Message Relay for Extended Coverage
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Solution Overview
Problem
Vehicular communication technologies, such as V2X, face limitations in coverage, particularly when vehicles are outside the range of communication base stations or roadside smart infrastructure, leading to potential risks in emergency situations.
Innovation Solution
A message set and messaging method utilizing a vehicle as a relay, employing direct connection technologies like PC5 or DSRC, where a source vehicle can send messages to nearby relay vehicles, which then forward them to base stations or smart units, including encryption and payment indicators to ensure proper charging and delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If direct link communication technology is used for V2X communication, then communication range is limited by the direct link communication range, but device complexity is reduced
Solution Approach 1:
The patent introduces relay vehicles as intermediary nodes to extend communication coverage. When a source vehicle cannot directly communicate with the base station, relay vehicles forward messages between the source vehicle and the base station, effectively expanding the communication area without requiring complex infrastructure changes.
Solution Approach 2:
The communication path is segmented into multiple hops through relay vehicles. Instead of requiring a direct single-link connection between source vehicle and base station, the communication is divided into multiple segments (source vehicle to relay vehicle, relay vehicle to base station), allowing extended coverage while maintaining relatively simple device complexity at each node.
2Area of stationary object
If relay vehicles are introduced to extend communication range, then communication coverage is improved, but message authentication and routing complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring relay information indicators and vehicle information indicators in message headers before transmission. This allows relay vehicles to quickly identify whether to forward messages and distinguish source vehicles without complex real-time authentication, simplifying the routing process while enabling extended coverage.
Solution Approach 2:
The patent implements feedback mechanisms where relay vehicles send acknowledgments and status information back to source vehicles and base stations. This feedback loop enables dynamic routing decisions and message delivery confirmation, allowing the system to manage extended coverage while maintaining controllable routing complexity through iterative optimization.
3Reliability
If encryption is applied to message content for security, then information security is improved, but processing time increases
Solution Approach 1:
The patent applies local quality by selectively encrypting only the message content while leaving the message header unencrypted or using simpler encryption. This allows critical routing information in the header to be processed quickly for fast forwarding decisions, while the message content is encrypted for security, achieving a balance between security and processing speed.
Data Source
AI summary
A message set for vehicular communication, including a message header and a message content, wherein the message set is set to be sent by a source vehicle, forwarded by one or more relay vehicles, and received by a terminal device, the message header including: a relay information indicator that indicates whether the message set should be forwarded by said relay vehicle receiving said message set; a vehicle information indicator indicating a unique identification data for the source vehicle; a payment information indicator that indicates an available payment information for the source vehicle; and a terminal type indicator indicating the type of terminal device for receiving the message set. The present disclosure also discloses a messaging method for delivering the message set.