IPv6 Packet Encapsulation for IPv4 Network Transit
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Solution Overview
Problem
Conventional utility networks face limitations in enabling seamless communication between IPv6 utility nodes and IPv4 networks, hindering efficient monitoring and control of commodities like electricity, water, and gas through automated meter reading systems.
Innovation Solution
The system encapsulates IPv6 packets in IPv4 packets for transmission through IPv4 networks, allowing IPv6 utility nodes to communicate with IPv6 nodes via IPv4 networks by using access points and back office systems that support both IPv4 and IPv6 protocols, enabling multi-homing and dynamic address allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If IPv6 packets are transmitted directly through IPv4 networks, then communication between IPv6 utility nodes is enabled, but protocol incompatibility prevents seamless transmission
Solution Approach 1:
The patent introduces an encapsulation mechanism where IPv6 packets are wrapped within IPv4 packets, using the IPv4 protocol as an intermediary carrier to traverse IPv4 networks. This allows IPv6 traffic to pass through IPv4 infrastructure without direct protocol interaction, resolving the incompatibility while maintaining transmission reliability through structured packet formatting and header management
2Ease of operation
If IPv6 utility nodes are connected via IPv4 networks, then network reachability is improved, but addressing complexity increases due to protocol translation requirements
Solution Approach 1:
The patent segments the network communication into distinct IPv6 and IPv4 domains, with clear boundaries at network edge devices. IPv6 nodes operate within their native protocol domain while IPv4 networks maintain their own domain, with encapsulation/decapsulation points serving as transition zones. This segmentation allows each domain to maintain simple, native addressing without requiring complex dual-stack implementations throughout the entire network
3Productivity
If encapsulation technique is used to transmit IPv6 packets through IPv4 networks, then communication efficiency is improved, but packet overhead increases
Solution Approach 1:
The patent utilizes IPv6's native support for extension headers and flexible address formats to optimize encapsulated packet structures. By leveraging IPv6's larger address space and more efficient header options, the encapsulation overhead is minimized compared to traditional approaches. The system dynamically adjusts packet parameters based on network conditions and traffic types to balance efficiency gains against overhead costs
Data Source
AI summary
One example embodiment provides a method and system where a node in an IPv6 utility network communicates with an IPv6 destination node through and IPv4 network. IPv6 utility nodes are reachable through at least one access point. IPv6 packets to be transmitted between an IPv6 access point and an IPv6 destination node through a IPv4 communications network are encapsulated in IPv4 packets for transmission through the IPv4 communications network. Packets received after transmission through the IPv4 communications network at the destination node are extracted to retrieve the IPv6 packet.