Automatic Data Link Switching for Mobile Terminals
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Solution Overview
Problem
In the context of mobile communication, particularly with Enhanced High Rate Packet Data (eHRPD) networks, the inability to acquire an Access Point Name (APN) required for data link establishment leads to unavailability of data services, as eHRPD and High Rate Packet Data (HRPD) networks differ in data link establishment manners, with eHRPD necessitating an APN for connection while HRPD does not.
Innovation Solution
An automatic data link switching method for terminals, where the Application Processor (AP) retrieves the required APN for the eHRPD network and, upon failure, initiates a switch to the HRPD network, allowing the MODEM to establish a data link without needing an APN, thereby ensuring continuous data service.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal attempts to establish a data link in the eHRPD network, then the data transmission speed and network performance are improved, but the data link cannot be established when APN is unavailable
Solution Approach 1:
The patent implements dynamic network switching capability where the terminal can automatically transition between eHRPD and HRPD networks based on APN availability. The system dynamically adjusts the data link establishment process by detecting APN retrieval failure and switching to an alternative network mode, thereby maintaining service continuity and improving reliability across different network conditions.
2Productivity
If the terminal uses eHRPD network for data connection, then the data transmission performance is improved, but the system complexity increases due to APN retrieval and network switching requirements
Solution Approach 1:
The patent implements a self-service mechanism where the terminal automatically detects APN retrieval failure and triggers network switching without requiring external intervention. The system autonomously manages the complexity of network switching by embedding the detection and switching logic within the terminal's data link establishment process, thereby maintaining high data transmission speed while handling complexity internally.
3Adaptability or versatility
If the terminal switches from eHRPD to HRPD network when APN is unavailable, then the data service availability is maintained, but the network connection stability may be affected
Solution Approach 1:
The patent implements a fallback mechanism that cushions against service interruption by pre-establishing the capability to switch to HRPD network when eHRPD APN retrieval fails. This prior cushioning ensures that service availability is maintained by having a ready alternative network path, thereby protecting against complete service disruption while managing connection stability through controlled switching.
Data Source
AI summary
A terminal and an automatic data link switching method for a terminal are provided. The method includes that: an AP retrieves an APN required by establishment of a data link of a connection of a first network after receiving from a MODEM a notice of establishing the connection of the first network, and when an APN retrieval result is null, sends to the MODEM a notice of switching to a connection of a second network; and the MODEM switches to the second network after receiving from the AP the notice of switching to the connection of the second network, and sends a notice to the AP. By the method and terminal, when there is no APN required by the connection of the first network and a data service cannot be normally used, the terminal can be automatically switched to the second network for establishment of the data link.