Mobile Terminal PLMN Connection Time Reduction
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Solution Overview
Problem
Users experience prolonged waiting times when connecting to a Public Land Mobile Network (PLMN) for the first time, as existing methods are inefficient in quickly identifying and establishing a network connection, significantly impacting communication experience.
Innovation Solution
A method and mobile communication terminal that detect the type of user identification card, determine the compatible PLMN based on network standards, add the PLMN's network identity to an Equivalent Public Land Mobile Network (EPLMN) list, and establish a connection with a matching PLMN from this list, thereby enhancing the chances of finding a stored network identity and reducing connection time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal performs a full network search to find a PLMN, then the network connection can be established, but the connection time becomes excessively long (10-20 minutes)
Solution Approach 1:
The terminal performs a full network search and stores the found PLMN identity in advance. When the SIM card is first inserted or the terminal restarts, it directly uses the pre-stored PLMN identity to quickly establish connection, avoiding repeated full network searches and reducing connection time from 10-20 minutes to a few seconds.
Solution Approach 2:
The terminal creates a copy of the PLMN identity information obtained during network search and stores it in memory. This copied information is then used for subsequent connection attempts, eliminating the need to perform complete network searches again and significantly reducing connection establishment time.
2Loss of time
If the terminal uses a simplified connection method with pre-stored PLMN identity, then the connection time is reduced, but the adaptability to different networks decreases
Solution Approach 1:
The terminal dynamically adjusts its network selection strategy: it first attempts to connect using the pre-stored PLMN identity for quick connection, and if this fails or is not available, it automatically performs a full network search to find available PLMNs. This dynamic approach ensures both fast connection when possible and broad network compatibility when needed.
Solution Approach 2:
The terminal performs a full network search in advance and stores the found PLMN identity for future use. This preliminary action ensures that when the SIM card is first inserted or the terminal restarts, it has pre-acquired network information to enable fast connection while maintaining the ability to adapt to different networks through the comprehensive initial search.
Data Source
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AI summary
Disclosed are a network access method and a mobile communication terminal, comprising: upon detecting the type of a subscriber identity module being inserted for the first time into a mobile communication terminal, public land mobile networks (PLMNs) of a network format supported by the mobile communication terminal are determined on the basis of the type of the subscriber identity module; network identities of the PLMNs of the network format supported by the mobile communication terminal as determined are added to an equivalent public land mobile network (EPLMN) list; and finally, when a PLMN matching either network identity in the EPLMN list is found, a communication connection between the mobile communication terminal and the matching PLMN is established. Implementation of embodiments of the present invention allows a reduction in the length of time that the mobile communication terminal takes to connect to the PLMN, thus greatly enhancing user communication experience.