Proxy Mobile IP Gateway Direct Routing Optimization
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Solution Overview
Problem
In Proxy Mobile IP networks, traffic between communication nodes connected to the same media access gateway often transits through a local mobility anchor, leading to unnecessary bandwidth wastage due to sub-optimal routing paths.
Innovation Solution
Implementing a method and nodes that allow gateways to directly communicate and route data packets between each other by exchanging addressing information, eliminating the need for traffic to transit through the anchor by using direct routes between media access gateways.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If traffic between communication nodes transits through the local mobility anchor, then routing is simplified and managed centrally, but bandwidth is wasted and transmission efficiency decreases
Solution Approach 1:
The patent segments the routing function into two parts: control plane functions remain centralized at the anchor for management, while data plane forwarding is distributed directly between gateways. This segmentation allows simplified anchor management without forcing all traffic through the anchor, resolving the contradiction between centralized routing management and bandwidth efficiency.
Solution Approach 2:
The patent introduces a gateway address exchange mechanism where the anchor mediates the distribution of gateway addresses to enable direct routing. The anchor acts as an intermediary that provides the necessary addressing information without becoming a mandatory transit point for all traffic, thus reducing bandwidth waste while maintaining simplified management.
2Loss of energy
If direct routing between gateways is implemented, then bandwidth efficiency improves and costs reduce, but routing complexity increases and requires additional address exchange mechanisms
Solution Approach 1:
The patent implements preliminary action by having gateways exchange address information in advance through the anchor before direct communication is needed. This pre-establishment of addressing information simplifies the actual direct routing process, as gateways already have the necessary addresses to route packets directly without complex real-time routing decisions.
Solution Approach 2:
The patent enables gateways to self-configure for direct routing by receiving address information from the anchor and autonomously establishing direct communication paths. This self-service approach reduces the need for complex centralized routing control, allowing bandwidth-efficient direct routing with minimal additional complexity.
3Reliability
If all traffic routes through the anchor, then network control and security are simplified, but transmission latency increases and efficiency decreases
Solution Approach 1:
The patent segments network functions into control plane (anchored at the mobility anchor for reliability) and data plane (routed directly between gateways to reduce latency). This segmentation allows network control and security to remain simplified through the anchor while enabling low-latency direct transmission for actual data traffic.
Solution Approach 2:
The anchor serves as an intermediary that provides addressing information and maintains control plane functions without being a mandatory transit point for data traffic. This intermediary role allows the anchor to maintain network control and security while enabling direct gateway-to-gateway routing that minimizes transmission latency.
Data Source
AI summary
A method and nodes are provided for localizing traffic between communication nodes receiving service from a same network. A local mobility anchor informs media access gateways providing access to two communication nodes of each other's addresses. Traffic exchanged between the two communication nodes connected to the same network via these media access gateways are routed directly between the gateways, bypassing the local mobility anchor.