Mobile Terminal Handoff via Address Binding
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Solution Overview
Problem
Existing solutions for mobility support in packet-switched data communications networks are inadequate in ensuring seamless communications sessions during transit, as they require base stations to actively participate and depend on their capabilities, leading to increased complexity and cost.
Innovation Solution
A mobile terminal apparatus with multiple interfaces that can obtain connections using either its home-address or care-of-address, and a method to instruct and set up bindings between these addresses, allowing for seamless handoffs without relying on base station capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If base stations actively participate in fast handoff procedures, then handoff speed is improved, but device complexity and processing burden increase
Solution Approach 1:
The mobile terminal autonomously performs handoff by detecting signal strength from multiple base stations, selecting the optimal target base station, and executing the handoff procedure without requiring active participation or complex processing from the base stations. The base stations merely provide broadcast signals which the mobile terminal uses to make handoff decisions independently.
2Speed
If fast handoff procedures depend on base station capabilities, then handoff performance is improved, but adaptability decreases
Solution Approach 1:
The handoff procedure is designed to be universally applicable across different base station vendors and network configurations. The mobile terminal implements a standardized handoff mechanism that works with any base station that broadcasts standard signals, eliminating the need for vendor-specific capabilities or proprietary protocols.
3Reliability
If multiple interfaces are used for network connection, then reliability is improved, but device complexity increases
Solution Approach 1:
The mobile terminal dynamically monitors signal conditions from multiple base stations and automatically switches between them based on real-time measurements. The system maintains multiple potential connection paths but actively uses only the optimal one at any given time, providing reliability through redundancy while managing complexity through dynamic adaptation.
Data Source
AI summary
A mobile terminal apparatus includes a plurality of interfaces, each interface being capable of, when an associated access mechanism thereof is in an active state, obtaining a connection to a network using one of a home-address and a care-of-address. The home-address is assigned to the interface in advance, and the care-of-address is assigned to the interface while the interface is in a domain where the home-address is not available. An instructing section instructs a setup of a binding of a home-address of a first interface of the plurality of interfaces and one of a home-address and a care-of-address of a second interface. A setup section sets up the binding.