Mobility Access Gateway Emulating MIPv4 for IPv6 Networks
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Solution Overview
Problem
The transition from 3G to 4G wireless networks poses a challenge due to the different implementations and security requirements of client-controlled mobility management protocols (CMIPv4) and network-controlled mobility management protocols (PMIPv6), making it impractical for 3G mobile nodes to support PMIPv6 without significant modifications or replacements.
Innovation Solution
Implementing a gateway that emulates mobile IP version 4 (MIPv4) over an Internet Protocol version 6 (IPv6) network, using a mobility access gateway (MAG) to terminate MIPv4 protocol access and communicate with a PMIPv6-based core network, allowing for the co-location of both protocols and maintaining security through authentication, authorization, and accounting (AAA) extensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If 3G mobile nodes are modified to support PMIPv6 protocol, then network compatibility with 4G core network is improved, but device complexity and modification cost increase significantly
Solution Approach 1:
The patent introduces a Mobility Access Gateway (MAG) as an intermediary device that sits between the 3G mobile node and the 4G core network. The MAG translates CMIPv4 protocol messages from the 3G node into PMIPv6 protocol messages for the 4G core network, and vice versa. This intermediary approach allows protocol translation without requiring modifications to the existing 3G mobile nodes, thereby maintaining their simplicity while achieving compatibility with the 4G network infrastructure.
2Adaptability or versatility
If protocol translation gateway is implemented, then support for both CMIPv4 and PMIPv6 is improved, but network device complexity increases
Solution Approach 1:
The Mobility Access Gateway (MAG) is designed as a universal device that can handle multiple protocol types (CMIPv4 and PMIPv6) simultaneously. It provides multi-functional capabilities including: terminating CMIPv4 registrations from 3G nodes, translating CMIPv4 messages to PMIPv6 messages, anchoring PMIPv6 sessions in the 4G core network, and supporting both IPv4 and IPv6 address families. This multi-functional design consolidates protocol translation capabilities into a single gateway device rather than requiring separate translation components.
3Reliability
If seamless mobility management is provided across protocol boundaries, then user experience is improved, but authentication and security management complexity increases
Solution Approach 1:
The Mobility Access Gateway (MAG) acts as a security intermediary that handles authentication and authorization between 3G mobile nodes and the 4G core network. It implements AAA (Authentication, Authorization, and Accounting) extensions that work with both CMIPv4 and PMIPv6 protocols. The MAG validates mobile nodes using 3G authentication mechanisms and translates these into 4G network security contexts, ensuring seamless security management across protocol boundaries without requiring dual authentication systems.
Data Source
AI summary
A system and method are disclosed for providing mobility management among mobile nodes in a communication network. Emulation can be provided to allow a mobile node that uses mobile IP (MIP) to access and use a communication network that is based on proxy mobile IP (PMIP). A gateway can be used to terminate the MIP based protocol access from the mobile node and communicate with the PMIP based core network. Emulation can be provided on a gateway to provide communication from a internet protocol version 4 (IPv4) mobile node and a core network running internet protocol version 6 (IPv6). This allows the network operator to provide access to the deployed base of MIP or IPv4 mobile nodes.