Mobile Terminal Network Access via QR Code EHPLMN
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Mobile communication terminals experience prolonged network search times when a new user identification card is inserted or when roaming, affecting user communication experience due to the need to find a suitable Public Land Mobile Network (PLMN) identifier.
Innovation Solution
The implementation of an Equivalent Home Public Land Mobile Network (EHPLMN) list, where the mobile communication terminal receives and decodes a graphical two-dimensional barcode to prioritize network access to pre-stored PLMN identifiers, reducing search time and enhancing user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the mobile communication terminal performs a comprehensive network search to find the PLMN identifier, then the reliability of network access is improved, but the network access time increases significantly
Solution Approach 1:
The patent stores PLMN identifiers in advance in the equivalent home public land mobile network (EHPLMN) list before network access is needed. When network access is required, the terminal first checks the EHPLMN list for matching identifiers, avoiding the need for comprehensive network search. This preliminary storage and prioritized checking resolves the contradiction by enabling fast access (reducing time loss) while maintaining reliability through pre-validated network identifier storage.
2Adaptability or versatility
If the mobile communication terminal uses a traditional network search method, then all possible PLMN identifiers are checked ensuring complete coverage, but the user communication experience deteriorates due to long waiting time
Solution Approach 1:
The system pre-stores PLMN identifiers in the EHPLMN list based on user profiles, location information, and historical network access data. During network access, the terminal prioritizes checking these pre-stored identifiers before performing comprehensive searches. This approach maintains adaptability by ensuring complete PLMN coverage is still checked if needed, while dramatically improving ease of operation by reducing user-perceived waiting time through prioritized checking of likely matching networks.
Solution Approach 2:
The patent implements a two-tiered network identifier checking mechanism: first checking the local EHPLMN list (high priority, fast access), then performing comprehensive network search (low priority, complete coverage) only if needed. This local quality differentiation resolves the contradiction by providing fast access for likely matching networks while maintaining complete coverage capability for adaptability.
3Measurement precision
If the mobile communication terminal performs network search from scratch when a new user identification card is inserted, then accurate network matching is ensured, but the network search time extends to several minutes
Solution Approach 1:
When a new user identification card is inserted, the terminal retrieves pre-stored PLMN identifiers from the EHPLMN list associated with the user profile and SIM card information. The terminal then checks these pre-stored identifiers against available networks before performing comprehensive network search. This preliminary checking based on pre-stored data maintains measurement precision by ensuring accurate network matching while reducing network search time from minutes to seconds.
Solution Approach 2:
The patent creates a copy of relevant PLMN identifier information from the user's home network and historical access data, storing it in the EHPLMN list. This copied information serves as a preliminary filter during network access, maintaining matching accuracy by using verified network identifiers while dramatically reducing search time by avoiding redundant comprehensive network scans.
Data Source
AI summary
A network access method and a mobile communication terminal are provided. The mobile communication terminal determines the current location of the mobile communication terminal, receives a graphical two-dimensional barcode transmitted by another mobile communication terminal bound with the mobile communication terminal, decodes the graphic two-dimensional barcode to acquire an equivalent home public land mobile network (EHPLMN) list to which the graphic two-dimensional barcode points, and performs network access according to the EHPLMN list when the mobile communication terminal detects that the EHPLMN list contains a network identifier of a public land mobile network (PLMN) corresponding to the current location.