Distributed Mobility Management Anchor Agents for Multicast Optimization
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Solution Overview
Problem
Conventional centralized mobility management schemes in networks experience data processing overload and stability issues due to reliance on a single anchor node for maintaining IP session continuity when mobile nodes move, leading to disconnections and inefficient bandwidth usage.
Innovation Solution
A distributed mobility management system that employs a mobility management anchor agent and information server to support mobile nodes' mobility, manage IP multicast, and optimize multicast data delivery by dynamically selecting agents and networks, thereby reducing unnecessary packet duplication and ensuring real-time multimedia transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a centralized mobility management scheme is used with a single anchor node, then IP session continuity is maintained when mobile nodes move, but data processing overload and stability issues occur due to reliance on a single anchor node
Solution Approach 1:
The patent divides the centralized anchor node into multiple distributed anchor agents (ANA, ANB, etc.). Each anchor agent independently manages mobility for mobile nodes in its service area. This segmentation distributes the data processing load across multiple nodes while maintaining IP session continuity through the distributed architecture.
2Reliability
If a centralized mobility management scheme is used with a single anchor node, then IP session continuity is maintained when mobile nodes move, but stability issues occur due to single point of failure
Solution Approach 1:
The system segments the single anchor node function into multiple anchor agents that can independently operate. This eliminates the single point of failure, as mobile nodes can be served by any available anchor agent, thereby improving system stability while maintaining IP session continuity.
Solution Approach 2:
The patent changes the architectural parameter from centralized to distributed, transforming the system from a single-point architecture to a multi-node architecture. This parameter change fundamentally improves stability by providing redundancy and fault tolerance while maintaining the core function of IP session continuity.
3Adaptability or versatility
If mobile nodes move from one network to another, then network access is achieved, but disconnections occur and bandwidth usage becomes inefficient without proper mobility management
Solution Approach 1:
The anchor agents act as intermediaries between mobile nodes and the network. When mobile nodes move, the anchor agents manage the handoff process and maintain active connections through IP tunneling, preventing disconnections and optimizing bandwidth usage by keeping data flows active rather than tearing down and reestablishing connections.
4Adaptability or versatility
If IP multicast is supported in mobility management, then real-time multimedia services are enabled, but unnecessary packet duplication occurs without proper multicast management
Solution Approach 1:
The anchor agents serve as intermediaries for IP multicast traffic. They receive multicast data once and distribute it to multiple mobile nodes through IP tunneling, preventing unnecessary packet duplication. This intermediary function enables real-time multimedia services while optimizing bandwidth usage by eliminating redundant transmissions.
Data Source
AI summary
The present invention relates to a mobility management system and method for distributed mobility management network providing initial connection and handoff processes of mobile nodes to support IP multicast, and a method of selecting agents and networks to receive multicast data by anchor agents in the distributed mobility management network, comprising: a mobile node receiving network access services by conducting wireless communications in the distributed mobility management network through the wireless transmitter-receiver as a device consists of a wireless transmitter-receiver, an antenna and a control unit; a mobility management anchor agent supporting the mobility of the above mobile node, and taking the role of anchor each time the mobile node moves; a mobility management information server receiving information on agent or network transmitting multicast channel and data currently received from the above mobility management anchor agent, and then registering and updating the information.