Foreign Agent for Access Technology Agnostic Mobile Networks
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Solution Overview
Problem
Existing network communication systems struggle to enable seamless communication between mobile client devices and home networks across different access technologies, such as CDMA and WiMAX, without disrupting existing network sessions.
Innovation Solution
A system comprising mobile nodes, access gateways, and a foreign agent that provides foreign agent services, allowing mobile nodes to register and communicate across various access technologies, with the foreign agent relaying messages between home and foreign networks using multiple access gateways.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a mobile node switches between different access technologies (CDMA, WiMAX), then communication flexibility and adaptability are improved, but network session continuity and reliability deteriorate due to lack of seamless handoff support
Solution Approach 1:
The patent introduces a foreign agent as an intermediary component that mediates between mobile nodes using different access technologies and the home network. The foreign agent receives registration requests from mobile nodes, maintains binding information, and enables seamless communication handoff between different access technologies (CDMA, WiMAX) without disrupting existing network sessions, thus resolving the contradiction between adaptability and reliability
2Adaptability or versatility
If foreign agent services are implemented across multiple access technologies, then network communication versatility is improved, but system complexity increases due to multi-technology protocol handling
Solution Approach 1:
The foreign agent is designed as a universal component that handles multiple access technologies (CDMA, WiMAX, and future technologies) through a single unified architecture. It performs multiple functions including registration management, binding information maintenance, and communication relay across different access technologies, eliminating the need for separate handling mechanisms for each technology and thereby reducing overall system complexity while maintaining versatility
3Reliability
If mobile nodes register with foreign agent for each access technology, then communication reliability is improved, but registration overhead and time consumption increase
Solution Approach 1:
The patent implements preliminary registration action where mobile nodes register with the foreign agent in advance before actual communication occurs. The foreign agent stores binding information and establishes preliminary connections, so that when mobile nodes switch between access technologies, the registration and connection setup has already been completed, eliminating the need for repeated registration processes and reducing time consumption while maintaining communication reliability
Data Source
AI summary
A system and a method for enabling network communications between mobile client devices and home networks without regard to the access technology employed by the mobile client device. A system is provided that includes a plurality of mobile nodes configured to communicate over a network using different access technologies. Some of the mobile nodes, for example, may communicate using CDMA. Others may communicate using WiMAX. Still others may use other access technologies. The system also includes a foreign agent. The foreign agent is configured to provide foreign agent services to mobile nodes using different access technologies.