Roadside Gateway Node Coordination for V2X Traffic
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current Vehicle-to-Everything (V2X) communication systems face challenges in efficiently managing data exchange between cell-supported and adhoc radio communications networks, leading to unnecessary traffic and interference, particularly in scenarios with varying numbers of gateway nodes.
Innovation Solution
A roadside gateway node is configured with processor, memory, and dual radio modules for cell-supported and adhoc networks, capable of discovering and interacting with other nodes to determine similarity values and adjust data transmission based on gateway node indications, thereby optimizing data exchange across both networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data is transmitted on both sidelink and adhoc channels independently, then data delivery coverage is improved, but unnecessary data replication and network traffic increase
Solution Approach 1:
The patent implements a feedback mechanism where gateway nodes exchange information about their data transmission status between sidelink and adhoc channels. When one gateway node detects that data has been transmitted on both channels, it sends an indication to other gateway nodes, which then refrain from duplicating the transmission, thereby reducing unnecessary network traffic while maintaining comprehensive data delivery coverage.
Solution Approach 2:
The patent merges the transmission decisions of multiple gateway nodes by coordinating their actions through exchanged indications. Instead of independent parallel transmissions that cause redundancy, the gateway nodes combine their transmission behaviors so that when one node transmits on both channels, other nodes adjust their transmissions accordingly, eliminating duplicate data copies in the network.
2Speed
If multiple gateway nodes transmit data independently on both channels, then data dissemination speed is improved, but interference between channels increases
Solution Approach 1:
Gateway nodes provide feedback to each other about their transmission status on sidelink and adhoc channels. This feedback mechanism allows nodes to coordinate their transmissions in time and space, preventing simultaneous transmissions that would cause interference while maintaining rapid data dissemination through coordinated parallel operations.
3Device complexity
If gateway nodes operate without coordination, then device complexity is reduced, but data exchange efficiency decreases
Solution Approach 1:
The patent introduces an intermediary indication message as a mediator between gateway nodes. This simple signaling mechanism enables coordination without requiring complex centralized control or sophisticated algorithms. The indication messages serve as a lightweight intermediary that carries transmission status information, allowing distributed gateway nodes to achieve coordinated operation with minimal added complexity.
Data Source
Figure 1
Figure 2a
Figure 2b
AI summary
According to a further aspect a method to operate a road-side network node in a cell-supported radio communications network and in an adhoc radio communications network is provided. The method comprises: discovering (1202) at least one further road-side network node in the vicinity of the road-side network node as a gateway node, wherein the at least one further road-side node has the capability to exchange data across the cell-supported radio communications network and the adhoc radio communications network; and exchanging (1204) data across the cell-supported radio communications network and the adhoc radio communications network in dependence on the discovered at least one further road-side network node.