Mobile-IPv6 Encapsulation Using Routing Extension Headers
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Solution Overview
Problem
Encapsulated IPv6 packets in mobile-IPv6 networks have significant overhead due to the additional tunnel header, which becomes problematic when transmitting small payloads, such as voice or real-time media, leading to reduced network bandwidth efficiency.
Innovation Solution
Implementing an optimized mobile-IPv6 encapsulation scheme that uses IPv6 routing extension headers for both reverse tunneling and tunneling, reducing overhead by modifying and removing these headers to minimize packet size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If encapsulated IPv6 packets use standard tunnel headers, then mobile-IPv6 routing functionality is achieved, but packet overhead increases significantly
Solution Approach 1:
The patent extracts and removes the redundant 40-byte IPv6 header from encapsulated packets, keeping only the essential routing information. This is achieved by using a simplified encapsulation format that retains only the necessary tunnel header components, thereby reducing overhead while preserving mobile-IPv6 routing functionality.
Solution Approach 2:
The patent changes the parameter of header size by transitioning from the standard 40-byte IPv6 header to a reduced header format. This parameter change optimizes the packet structure by eliminating unnecessary fields while maintaining the core routing capabilities required for mobile-IPv6 operation.
2Measurement precision
If small payload packets are transmitted to improve voice and real-time media fidelity, then transmission quality increases, but overhead ratio increases
Solution Approach 1:
The patent removes the redundant 40-byte IPv6 header from small payload packets, which significantly reduces the overhead ratio. This extraction of unnecessary header information allows small packets used for voice and real-time media to maintain high fidelity while improving bandwidth efficiency.
3Loss of information
If 40-byte IPv6 headers are used, then complete addressing information is provided, but header size increases
Solution Approach 1:
The patent extracts only the essential addressing information needed for mobile-IPv6 routing, removing redundant fields from the standard 40-byte IPv6 header. This creates a streamlined header that maintains complete functional addressing information while reducing the header size to minimize overhead.
Data Source
AI summary
Systems and methods are provided for an optimized mobile-IPv6 encapsulation. A mobile node sends packets to a correspondent node by encapsulating a packet using an IPv6 routing extension header, and reverse tunneling the packet to a home agent. The home agent modifies the packet and forwards it to the correspondent node. When the correspondent node sends packets to the mobile node's home address, the home agent intercepts the packet, encapsulates the packet with an IPv6 routing extension header, and tunnels the packet to the mobile node. Consequently, because packets are tunneled using IPv6 routing extension headers, the amount of overhead in each encapsulated packet is reduced, thus increasing the available bandwidth in a network.