Broker Node Heterogeneous Network Communication
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Solution Overview
Problem
Existing communication systems between moving vehicles and roadside units are limited by incompatibilities among different sub-networks, preventing communication across sub-networks with distinct naming, addressing, and radio technologies.
Innovation Solution
The implementation of a method allowing open communication between sub-networks with different routable network addressing schemes, utilizing broker nodes to relay packets across sub-networks by selecting appropriate nodes based on application identifiers and maintaining a broker table for efficient routing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If different sub-networks use distinct naming, addressing, and radio technologies, then each sub-network can be optimized for specific applications, but communication between sub-networks is prevented
Solution Approach 1:
The patent introduces a gateway node as an intermediary between heterogeneous sub-networks. The gateway node translates messages between different addressing schemes (e.g., geographic coordinates to LPG addresses), enabling communication between sub-networks that would otherwise be incompatible. This mediator approach resolves the contradiction by allowing each sub-network to maintain its optimized characteristics while establishing reliable inter-sub-network communication through the gateway's translation capabilities.
2Reliability
If a gateway node translates messages between different addressing schemes, then communication between sub-networks is enabled, but the complexity of the gateway node increases
Solution Approach 1:
The gateway node is designed with multi-functionality to handle various addressing schemes (geographic-based, LPG-based, peer-group-based) and message types (safety messages, traffic updates). By consolidating multiple translation capabilities and communication protocols within a single node type, the patent reduces overall system complexity compared to having specialized translation nodes for each protocol pair. The universal gateway can adapt to different sub-network configurations without requiring separate dedicated infrastructure for each translation task.
3Adaptability or versatility
If broker nodes are used to relay packets across sub-networks, then open communication is achieved, but the number of broker nodes and routing overhead increases
Solution Approach 1:
The patent combines the gateway node functionality with broker node capabilities. Instead of having separate gateway nodes for translation and broker nodes for packet relay, the system merges these functions into unified nodes that can both translate addressing schemes and relay packets across sub-networks. This consolidation reduces the total number of nodes required in the infrastructure while maintaining open communication capabilities between heterogeneous sub-networks.
Data Source
AI summary
An open communication method between at least two sub-networks using a broker node. Each of the sub-networks has a different routable network addressing scheme. The method comprises receiving a packet for a specific application, the packet includes an application identifier, determining if the packet is to be relayed to another of the at least two sub-network based upon the application identifier, determining if a node receiving the packet is a broker node, relaying the packet to a broker node if not a broker node and forwarding, by the broker node, the packet to at least one node in another of the at least two sub-network. The node generating the packet is configured to communicate using a first of the at least two sub-networks. A broker node is configured for communicating using at least two of the at least two sub-network via a corresponding routable network addressing schemes for each of the sub-networks.