Relay Protocol Converter for Cross-RAT V2X Message Relay
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Solution Overview
Problem
In Vehicle to Everything (V2X) communications, there is a challenge in ensuring that important messages, such as Basic Safety Messages (BSMs), are received by devices with different Radio Access Technologies (RATs, e.g., 5G, LTE, DSRC) without intervention from a cellular network, as devices may not all support the same communication protocols, leading to interoperability issues.
Innovation Solution
The implementation of relay devices equipped with protocol converter circuitry that can analyze messages, identify the original RATs used for transmission, and retransmit them in compatible RATs supported by the receiving devices, ensuring message accessibility across different radio access technologies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If devices use different Radio Access Technologies (RATs) for communication, then each device can operate with its native protocol, but interoperability issues arise and messages cannot be received by devices with different RAT capabilities
Solution Approach 1:
The patent introduces a relay device as an intermediary between devices using different RATs. The relay device receives messages from one RAT, converts them to the appropriate RAT format, and forwards them to the destination device. This mediator approach resolves the incompatibility between different RATs while ensuring reliable message delivery across heterogeneous communication technologies.
Solution Approach 2:
The relay device changes the transmission parameters of messages by converting them between different RAT formats (e.g., from 5G NR to LTE or DSRC). This parameter transformation enables messages to be compatible with the receiving device's native protocol, thereby achieving cross-RAT communication without requiring all devices to support every RAT.
2Adaptability or versatility
If relay devices are introduced to enable cross-RAT communication, then message accessibility across different RATs is improved, but device complexity and system overhead increase
Solution Approach 1:
The relay device is designed with multi-functionality to handle multiple RATs (5G NR, LTE, DSRC) simultaneously. By consolidating the capability to convert between different RAT formats into a single universal device, the system avoids the need for every device to implement complex multi-RAT support, thereby reducing overall system complexity while maintaining cross-RAT accessibility.
3Ease of operation
If all devices supported every RAT protocol, then direct communication between any devices would be possible, but device complexity and resource requirements would increase significantly
Solution Approach 1:
The communication system is segmented into ordinary devices and specialized relay devices. Ordinary devices only need to support their native RAT, while the complexity of supporting multiple RATs is segregated to the relay devices. This segmentation allows direct communication between devices of the same RAT while enabling indirect communication across different RATs through the relay, thereby reducing the protocol support burden on individual devices.
Data Source
AI summary
A method configured to selectively retransmit a message includes analyzing a message received by a device to determine a set of radio access technologies (RATs) in which the message has been transmitted. If the device supports a device RAT that is different from set of RATS the message is updated to include the device RAT and the updated message is transmitted using the device RAT.