RAT Search Optimization via SIM Subscription Filtering
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Solution Overview
Problem
Electronic devices supporting multiple communication networks often engage in unnecessary frequency scanning and registration processes, especially when they detect a 5G base station, leading to increased time and power consumption, as well as unnecessary authentication and network load.
Innovation Solution
The electronic device identifies the list of subscribed wireless communication network services stored in the SIM UICC and controls the antenna module to connect only to the subscribed networks, avoiding unnecessary searches and registrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electronic device performs frequency scanning for all supported RATs, then the device can detect available networks, but unnecessary time and power are consumed scanning networks to which the user does not subscribe
Solution Approach 1:
The system performs preliminary action by reading the subscribed RAT list from the SIM card before executing the frequency scanning process. This allows the device to pre-filter which networks are relevant to the user, avoiding unnecessary scanning of networks to which the user does not subscribe, thereby reducing power consumption while maintaining reliable network detection for subscribed services.
Solution Approach 2:
Instead of performing complete frequency scanning for all supported RATs, the system applies partial action by scanning only for RATs that the user has subscribed to, as indicated in the SIM card. This selective scanning approach reduces unnecessary energy expenditure on detecting networks that will not be used, while still ensuring comprehensive detection of all relevant networks.
2Reliability
If the electronic device attempts registration for all detected networks, then the device ensures connectivity to available networks, but unnecessary authentication processes increase time consumption and network load
Solution Approach 1:
The system performs preliminary action by reading the subscribed RAT list from the SIM card before attempting network registration. This allows the device to pre-identify which detected networks are relevant to the user, filtering out networks to which the user does not subscribe. Consequently, the device only initiates authentication and registration processes for subscribed networks, reducing time consumption and network load while ensuring reliable connectivity to appropriate networks.
3Speed
If the electronic device scans for 5G networks, then the device can access high-speed communication, but unnecessary 5G registration attempts occur when the user does not subscribe to 5G service
Solution Approach 1:
The system performs preliminary action by reading the subscribed RAT list from the SIM card before initiating 5G network scanning and registration. This allows the device to determine in advance whether the user has subscribed to 5G services. If 5G is not in the subscribed list, the device skips 5G frequency scanning and registration attempts entirely, avoiding unnecessary time consumption and authentication processes, while still maintaining the capability to access high-speed communication when 5G subscription is present.
Data Source
AI summary
According to various embodiments, an electronic device may include: at least one antenna module including at least one antenna; a universal integrated circuit card (UICC) configured to store at least one piece of subscriber identity information; and at least one processor electrically connected to the UICC, wherein the at least one processor may be configured to: receive a request to initialize a subscriber identity module (SIM) stored in the UICC; identify whether the UICC includes information about a list of a wireless communication network service to which a user subscribes; and in response to identifying that the UICC including the information about the list of the wireless communication network service to which the user subscribes, control the electronic device to perform wireless communication network connection through the at least one antenna module based on the information about the list of the wireless communication network service to which the user subscribes being included in the UICC.