V2X Service Forwarding via Base Station Uu Interface
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Solution Overview
Problem
Current technologies face challenges in effectively forwarding Vehicle to Everything (V2X) services through the Uu interface, particularly for On Board Units (OBU) and eNB, due to limitations in signal quality and network resource utilization.
Innovation Solution
The method involves a base station eNB receiving V2X service identification or index from an OBU through the Uu interface, determining the appropriate forwarding mode, and selecting the Uu interface for service forwarding when the PC5 interface's signal quality drops below a threshold or is overloaded, ensuring reliable V2X service transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the PC5 interface is used for V2X service transmission, then direct device-to-device communication is achieved, but signal quality deteriorates when obstacles or distance increase
Solution Approach 1:
The patent introduces the base station as an intermediary node between V2X service senders and receivers. When the PC5 interface signal quality deteriorates, the base station receives V2X services via the Uu interface, processes them, and forwards them to target devices, thereby mediating the communication to overcome direct transmission limitations
Solution Approach 2:
The patent enables the base station to perform multiple functions: it acts as both a traditional cellular network node and a V2X service forwarding node. The base station can handle both Uu interface communications and PC5 interface V2X services, providing universal communication capabilities across different interfaces
2Speed
If the PC5 interface is used for V2X communication, then low latency is achieved, but network resource utilization decreases when the interface is overloaded
Solution Approach 1:
The patent implements dynamic interface selection where the system can switch between PC5 and Uu interfaces based on real-time conditions. When PC5 becomes overloaded, the system dynamically transitions to using the base station's Uu interface for forwarding, maintaining adaptability to changing network conditions
Solution Approach 2:
The base station serves as a mediator that relieves overload on the PC5 interface by accepting V2X services through the Uu interface and forwarding them to destinations, thereby distributing network load and improving overall resource utilization
3Area of stationary object
If the base station forwards V2X services through the Uu interface, then service coverage is extended, but network resource consumption increases
Solution Approach 1:
The patent applies local quality by having the base station forward V2X services only in specific scenarios where PC5 interface is unsuitable, rather than universally. This selective forwarding approach extends coverage where needed while minimizing unnecessary network resource consumption
Data Source
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AI summary
A vehicle network VX2 service forwarding method and apparatus, the method comprising: a base station eNB receives information carrying a V2X service identification or a V2X service identification index sent by a vehicle on-board unit OBU by means of a Uu interface; on the basis of the V2X service OBU or the V2X service identification index, the eNB determines that the V2X service needs to be forwarded, and determines the forwarding method used for forwarding the V2X service; according to said forwarding method and by means of the Uu interface, the eNB forwards the V2X service data sent by the OBU.