Distributed Mobility Agents for Wireless Terminal Management
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Solution Overview
Problem
Conventional terminal mobility management in mobile communication networks is inefficient due to centralized routing, single-point failures, and traffic centralization, which lead to inefficiencies and increased risk of errors.
Innovation Solution
A method and apparatus that manage terminal mobility based on movement speed by using either a Base Station (BS) or a home server to control data transmission/reception through allocated addresses, reducing the need for frequent binding updates and spreading risks, thereby reducing network congestion and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If centralized mobility management is used with a single mobility agent at the core network, then mobility management is simplified and centralized control is achieved, but the system becomes vulnerable to single-point failures and experiences traffic centralization causing core network congestion
Solution Approach 1:
The patent segments the centralized mobility management function into distributed mobility agents deployed at access networks. Instead of a single central agent, multiple mobility agents are distributed across different access networks, each managing local terminal mobility independently. This segmentation eliminates the single-point failure vulnerability while maintaining mobility management capabilities through distributed architecture.
2Device complexity
If centralized mobility management is used with a single mobility agent at the core network, then mobility management is simplified and centralized control is achieved, but traffic centralization causes core network congestion and reduces routing efficiency
Solution Approach 1:
The patent segments the centralized mobility management function into distributed mobility agents deployed at access networks. Instead of a single central agent, multiple mobility agents are distributed across different access networks, each managing local terminal mobility independently. This segmentation eliminates the single-point failure vulnerability while maintaining mobility management capabilities through distributed architecture.
Solution Approach 2:
The patent introduces a new dimension to mobility management by deploying mobility agents at the access network level rather than only at the core network. This dimensional shift from centralized core-level management to distributed access-level management enables more efficient local routing decisions and reduces core network traffic burden.
3Measurement precision
If frequent binding updates are performed to track terminal position changes, then mobility management accuracy is improved, but terminal power consumption and network overhead increase
Solution Approach 1:
The patent changes the parameter of binding update frequency by introducing a threshold-based mechanism. Instead of performing binding updates at every cell transition, the system updates bindings only when the terminal's movement exceeds a predefined threshold or when specific triggering events occur. This parameter change reduces the frequency of binding updates while maintaining adequate mobility management accuracy, thereby lowering terminal power consumption and network overhead.
Data Source
AI summary
An apparatus performs a method for managing mobility of a terminal by a Base Station (BS) in a wireless communication system. The method includes receiving information on whether a time for which a terminal had been located at a cell managed by a first BS before the terminal has moved to a cell managed by the BS is equal to or longer than a predetermined threshold. The method also includes controlling data transmission/reception of the terminal by using one of an address allocated to the terminal by the BS or an address allocated to the terminal by a home server according to whether the time for which the terminal had been located at the cell managed by the first BS is equal to or longer than the predetermined threshold.