Mobility Router Tunneling to Bypass Home Network Redundancy
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Solution Overview
Problem
In mobile IP technologies, route redundancy issues arise when a mobile node moves from its home network to a visited network, leading to inefficient data packet forwarding and increased network complexity.
Innovation Solution
A routing method and apparatus that establish a tunnel between a mobility router in the visited network and a proxy routing entity, bypassing the need for data packets to be forwarded through the home network, thereby reducing route redundancy and optimizing routing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all data packets are forwarded through the home network when a mobile node moves to a visited network, then session continuity is maintained, but route redundancy increases and network efficiency decreases
Solution Approach 1:
The patent introduces a proxy routing entity as an intermediary between the visited network and the home network. This entity maintains binding relationships with communication peer ends and enables direct routing of data packets through the visited network, eliminating the need for all packets to traverse the home network while preserving session continuity.
Solution Approach 2:
The patent segments the routing path into two types: packets requiring home network forwarding (for session establishment and control) and packets that can be directly routed through the visited network via the proxy routing entity. This segmentation reduces unnecessary traffic through the home network while maintaining essential connectivity.
2Reliability
If a tunnel is established between the home mobility router and the current mobility router to forward data, then session continuity is maintained, but the routing path becomes longer and less efficient
Solution Approach 1:
The proxy routing entity acts as a mediator that enables direct routing of data packets through the visited network. By establishing binding relationships between the mobile node's IP address and the communication peer end's IP address at the proxy routing entity, data packets can be forwarded directly without traversing the home network tunnel, thus improving transmission speed while maintaining session continuity.
3Reliability
If the mobile node reserves the IP address allocated by the home network, then session continuity is maintained, but the need for home network forwarding increases route redundancy
Solution Approach 1:
The proxy routing entity serves as an intermediary that leverages the reserved IP address binding to enable direct routing. When the mobile node reserves its home network IP address, the proxy routing entity maintains the binding relationship between this IP address and the communication peer end, allowing direct packet forwarding through the visited network without requiring home network involvement, thus improving network efficiency while preserving session continuity.
Data Source
AI summary
Embodiments of the present invention provide a routing method and a routing apparatus. The routing method includes: receiving a first data packet sent by a first mobile node to a first communication peer end, where the first mobility router is a mobility router in a visited network of the first mobile node, and the first data packet includes an address of the first communication peer end; acquiring an address of a proxy routing entity based on the address of the first communication peer end, where the proxy routing entity is located in a communication path between the first mobility router and the first communication peer end; establishing a first tunnel to the proxy routing entity based on the address of the proxy routing entity; and transmitting, by using the first tunnel, a data packet sent by the first communication peer end to the first mobile node.