Roadside Network Unit Gateway for IEEE 802.11p LTE-V2X Interoperability
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Solution Overview
Problem
The coexistence of IEEE 802.11p and LTE-V2X communication technologies in the same frequency range leads to performance degradation due to interference, affecting the efficiency and reliability of vehicle-to-everything (V2X) communication systems.
Innovation Solution
A roadside network unit and method that enables data conversion and transmission between IEEE 802.11p and LTE-V2X networks, allowing for the sharing of traffic safety and efficiency messages across both systems, thereby improving message penetration and reducing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If IEEE 802.11p and LTE-V2X communication technologies operate in the same frequency range, then both technologies can be deployed for V2X communication, but interference occurs leading to performance degradation
Solution Approach 1:
The patent introduces a gateway device as an intermediary between IEEE 802.11p and LTE-V2X networks. This gateway performs protocol conversion and message translation, allowing the two different communication technologies to coexist and share information without direct interference. The gateway acts as a mediator that converts messages from one protocol to another, enabling compatibility while maintaining reliable communication within each network domain.
2Area of stationary object
If multiple network units transmit data simultaneously in the same frequency range, then communication coverage is improved, but interference and collisions increase
Solution Approach 1:
The patent segments the V2X communication system into separate network domains - IEEE 802.11p networks and LTE-V2X networks - that operate independently in the same frequency range. Each network unit transmits within its own protocol domain, avoiding direct interference. The gateway device further segments message routing by directing messages to appropriate network units based on their destination and network type, thereby maintaining coverage while reducing harmful interference.
Data Source
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AI summary
A first roadside network unit (UE1) is proposed. A first transceiver (TA1; TC1) for a first wireless communication network is configured to receive data (DA; DC) on a first channel of the first wireless communication network from a second roadside network unit. A processor (P1) is configured to provide the received data (DA; DC) to a second transceiver (TC1; TA1) for sending to a third roadside network unit. The second transceiver (TC1; TA1) for a second wireless communication network is configured to send the data (DA; DC) provided by the processor (P1) on a second channel of the second communication network to the third roadside network unit.