Radio Terminal Dual Storage for Network Selection
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Solution Overview
Problem
Conventional radio communication terminals face issues where user-added network information, such as public wireless LAN details, is deleted when the communication provider rewrites the Preferred Roaming List (PRL), necessitating users to re-add this information.
Innovation Solution
A radio communication terminal with separate storage units for provider-provided and user-registered network information, allowing users to manage and rewrite their own network connections independently, while ensuring that user-registered network information remains intact even if provider-provided information is rewritten.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the communication provider rewrites the PRL to update provider-provided network information, then the provider-provided network connection information is updated, but the user-added network information is deleted
Solution Approach 1:
The storage unit is divided into a first storage area for provider-provided network information and a second storage area for user-added network information. This segmentation allows independent management of each type of information, enabling the provider to rewrite provider information without affecting user information.
2Device complexity
If user-added network information is stored in the same storage unit as provider-provided network information, then storage management is simplified, but user information is vulnerable to being overwritten by provider updates
Solution Approach 1:
The storage unit is segmented into distinct first and second storage areas. The first storage area holds provider-provided PRL information while the second storage area holds user-added network information. This segmentation protects user information from being overwritten during provider updates while maintaining organized storage management.
3Adaptability or versatility
If all network information is stored in a single rewritable storage unit, then flexibility in updating network information is improved, but user control over their own network information is lost
Solution Approach 1:
The storage unit is divided into a first storage area controlled by the provider for provider-provided network information and a second storage area controlled by the user for user-added network information. This segmentation enables both flexible updating of provider information and user control over their own network information.
Solution Approach 2:
Users can independently add, delete, and modify their own network information in the second storage area without requiring provider intervention. This self-service capability gives users control over their network connections while the provider maintains control over provider-provided information in the first storage area.
Data Source
AI summary
A radio communication terminal 100 includes: a first storage unit 1171 configured to store a PRL list L1 used for connection to a communication provider-provided WLAN provided by a communication provider, a content of the first storage unit 1171 being rewritable by the communication provider; and a second storage unit 1172 configured to store a user registration list L2 used for connection to a user-registered WLAN registered by a user of the radio communication terminal, the second storage unit 1172 being rewritable by the user. The radio communication terminal 100 selects any one of the communication provider-provided WLAN and the user-registered WLAN, based on the PRL list L1 and the user registration list L2.