Mobile Device Dual Network Registration via Intermediary Server
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Solution Overview
Problem
Existing mobile communication devices face challenges in seamlessly communicating with multiple wireless networks, such as CDMA2000 1x and GSM, while maintaining user requirements for speed, economy, and efficiency, especially when transitioning between wide area cellular networks and wireless local area networks.
Innovation Solution
A mobile device equipped with dual transceivers for CDMA2000 1x and IEEE 802.11 networks, capable of registering a public identity with both networks using the same user credential, allowing simultaneous active registration and data exchange across both networks without re-registration when switching between them.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a mobile device registers with only one access network at a time, then the device complexity is reduced, but the ability to communicate seamlessly across multiple networks deteriorates
Solution Approach 1:
The patent segments the registration management function by introducing a separate Registration Server that handles registration requests independently of the data service server. This allows multiple simultaneous registrations without increasing the complexity of individual device operations, as each registration is handled as a separate, manageable unit by the Registration Server.
Solution Approach 2:
The Registration Server acts as an intermediary between the mobile device and the data service server. It receives registration requests from the device, validates credentials, and manages the registration state, thereby simplifying the device's burden while enabling multi-network communication capability.
2Reliability
If the device re-registers when switching between networks, then the registration accuracy is maintained, but the service continuity deteriorates
Solution Approach 1:
The system performs preliminary action by maintaining the first IP address registration in the Registration Server before the device switches to the second network. This allows the data service server to continue using the original IP address without interruption, eliminating the need for re-registration and maintaining service continuity.
Solution Approach 2:
The patent ensures continuity of useful action by allowing the data service server to continue delivering services through the first IP address while the device simultaneously registers with the second network. The Registration Server maintains both registrations active, preventing service interruption during network switching.
3Adaptability or versatility
If the device uses a single IP address for all networks, then the ease of operation is improved, but the network capacity and preferred access capability deteriorate
Solution Approach 1:
The Registration Server provides universal functionality by managing multiple IP address registrations simultaneously for the same device identifier. It can handle both the first IP address from the first network and the second IP address from the second network, allowing the system to adapt to different network conditions while maintaining a unified registration management approach.
Data Source
AI summary
The disclosure is directed to a mobile communication device that is capable of accessing different types of networks at the same time. The mobile device registers a public ID with a first IP address over a first access network and also registers the same public ID with a different IP address over a second access network. Additional registrations and IP addresses may occur as well. Of particular benefit is that the different registrations are active during at least some concurrent period of time. This allows a user of the mobile device to have improved continuity of service, select preferred access methods, and receive different data services simultaneously.