RSU V2X Message Distribution via Control Node Location Data
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Solution Overview
Problem
In V2X communication systems, determining the appropriate geographical area and distribution path for transmitting V2X control messages to vehicles or pedestrians is challenging, as existing systems lack efficient methods to select the right sending nodes and communication schemes based on location-related information.
Innovation Solution
A Road Side Unit (RSU) apparatus and method that transmit location-related information to a control node, allowing it to determine a logical area and distribution path for V2X control messages by using a group identifier indicating road characteristics, enabling efficient message dissemination to vehicles or pedestrians.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If V2X control messages are transmitted to all vehicles in the network, then message delivery coverage is improved, but network bandwidth consumption increases and message delivery efficiency deteriorates
Solution Approach 1:
The patent applies local quality by transmitting V2X control messages selectively to vehicles in specific geographical areas affected by road conditions or accidents, rather than broadcasting to all vehicles in the network. The control node determines target vehicles based on their location relative to the incident area, ensuring messages are delivered only where needed. This resolves the contradiction by improving delivery efficiency (reducing unnecessary transmissions) while maintaining adequate coverage (delivering messages to all relevant vehicles in the affected area).
2Measurement precision
If location-related information is collected and processed to determine target vehicles, then message delivery precision is improved, but system complexity increases
Solution Approach 1:
The patent applies preliminary action by having vehicles report their location information to the control node in advance, before any V2X control messages need to be transmitted. The control node stores this location information and uses it immediately when a road condition change or accident is detected, eliminating the need for complex real-time location tracking and processing at the moment of message transmission. This resolves the contradiction by achieving precise message delivery (knowing which vehicles are in the affected area) while keeping system complexity manageable (using pre-collected data).
3Area of stationary object
If V2X control messages are transmitted through multiple base stations or RSUs, then message distribution coverage is improved, but control node processing complexity increases
Solution Approach 1:
The patent applies the intermediary principle by using base stations and RSUs as mediator nodes that receive V2X control messages from the control node and independently determine which vehicles in their coverage areas should receive the messages. Each base station/RSU uses its own knowledge of vehicle locations in its cell to filter and forward messages appropriately. This resolves the contradiction by expanding message distribution coverage (messages can reach vehicles through multiple distributed nodes) while reducing control node processing complexity (the control node only needs to transmit once to multiple intermediaries, not manage individual vehicle routing).
Data Source
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AI summary
A Road Side Unit (RSU) (120) transmits V2X report information to a control node (140) and transmits location-related information about the RSU (120) to the control node (140). The control node (140) determines, based on the received location-related information about the RSU (120), at least one of: one or more sending nodes; a transmission area; a distribution path; and a communication scheme, to distribute a V2X control message to a plurality of UEs. It is thus, for example, possible to contribute to achievement of a configuration in which, upon receiving V2X report information from an RSU, a server transmits a V2X control message based on the V2X report information to a plurality of vehicles or pedestrians.