eNodeB V2X Interface for Low-Latency Message Forwarding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current cellular networks, particularly those using 3GPP LTE, are not scalable to efficiently meet the latency and vehicle support constraints of Vehicle-to-Everything (V2X) communications, which are essential for intelligent transportation systems, due to limitations in existing ProSe architecture and protocols.
Innovation Solution
The enhancement of the ProSe architecture to support V2X services by introducing a V2X interface between the eNodeB/RSU and the ProSe/V2X function, allowing for direct transmission of V2X messages with reduced latency and power loss, and enabling multicast or broadcast functionality within cells, thereby optimizing V2X communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If V2X messages are transmitted through traditional cellular network infrastructure, then network coverage is maintained, but latency exceeds 100 milliseconds and power loss increases
Solution Approach 1:
The patent introduces a V2X function as an intermediary component that sits between the eNodeB and UEs. This V2X function receives V2X messages from the eNodeB and directly forwards them to target UEs, creating a dedicated transmission path that bypasses traditional cellular routing procedures and reduces latency while maintaining network coverage.
Solution Approach 2:
The patent segments the V2X communication path from the traditional cellular data path by creating a separate V2X interface and V2X function. This segmentation allows V2X messages to be handled through a specialized, optimized path independent of general cellular traffic, enabling sub-100ms delivery without interfering with regular network operations.
2Reliability
If V2X messages are broadcast to all UEs in a cell, then delivery coverage is maximized, but power loss increases
Solution Approach 1:
The patent implements local quality by enabling the V2X function to selectively forward messages to specific UEs or specific groups of UEs based on the message content and destination requirements. Instead of uniform broadcasting to all UEs, the system applies differentiated transmission strategies - sending only to relevant recipients - thereby maintaining reliable delivery while minimizing unnecessary power consumption.
Solution Approach 2:
The patent applies partial action by transmitting V2X messages only to the necessary subset of UEs rather than all UEs in the cell. The V2X function filters and forwards messages selectively based on destination addresses or group identifiers, performing exactly the amount of transmission needed without excessive broadcasting, thus reducing power loss while maintaining delivery reliability.
3Productivity
If existing ProSe architecture is used for V2X communication, then implementation is simpler, but scalability and efficiency constraints are not met
Solution Approach 1:
The patent enhances the existing ProSe architecture by making the eNodeB multi-functional - it serves both as a traditional cellular base station and as a V2X message source. The V2X function integrated within or connected to the eNodeB handles both conventional cellular traffic and specialized V2X messaging, allowing the system to meet efficiency constraints while building upon existing infrastructure rather than requiring completely separate systems.
4Loss of time
If V2X messages are forwarded through the core network, then routing control is improved, but latency increases beyond acceptable limits
Solution Approach 1:
The patent extracts the V2X message forwarding function from the core network path and places it at the edge network level within the eNodeB/V2X function architecture. By taking out the time-critical V2X message routing from the centralized core network and handling it locally at the eNodeB, the system achieves sub-100ms latency while maintaining routing control through the V2X function's intelligent forwarding decisions.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Technology for eNodeB operable to perform vehicle-to-anything (V2X) communication within a wireless communication network is disclosed. The eNodeB can Process a data packet containing vehicle-to-anything (V2X) identification information that is received from a user equipment (UE). The eNodeB can identify the data packet as a V2X message according to the V2X identification information. The eNodeB can determine the V2X messages are to be forwarded to a V2X function. The eNodeB can process the V2X message for transmission directly to the V2X function via a V2X interface.