Multimode Terminal System Priority List for Network Selection
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Solution Overview
Problem
Current multimode wireless communication terminals lack efficient techniques for network selection across multiple radio access technologies, particularly in multi-system domains, and require optimized methods for selecting the most preferred network based on user and operator preferences.
Innovation Solution
A method and system for provisioning a multimode wireless communications terminal with a system priority list (SPL) that identifies various wireless network types and allows selective network selection based on manually specified, automatically specified, or power-on mode priorities, utilizing an overlay function and overlay parameters to perform system and network selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multimode terminal performs network selection across multiple radio access technologies, then network selection capability is improved, but system complexity increases
Solution Approach 1:
The patent introduces a System Priority List (SPL) as an intermediary data structure that mediates between multiple radio access technologies and the terminal's network selection process. The SPL contains pre-configured priority information for different system types (GSM, WCDMA, CDMA2000, LTE) and networks, allowing the terminal to automatically select networks without complex real-time decision-making logic. This intermediary list simplifies the network selection process while maintaining multi-system capability.
2Ease of operation
If automatic network selection is implemented, then ease of operation is improved, but control flexibility deteriorates
Solution Approach 1:
The patent implements dynamic network selection by allowing the terminal to switch between automatic and manual selection modes based on user needs. The System Priority List is configured dynamically with different priority schemes that can be adjusted according to user preferences, network conditions, and service requirements. This dynamic approach maintains ease of automatic operation while preserving user control flexibility when needed.
3Measurement precision
If system priority list includes multiple network types, then network selection precision is improved, but information processing complexity increases
Solution Approach 1:
The patent segments the network selection process by organizing the System Priority List into distinct sections for different radio access technologies (GSM, WCDMA, CDMA2000, LTE) and network types (home, visited, roaming). Each segment contains specific priority information for that technology type, allowing the terminal to process only relevant segments based on current capabilities and conditions. This segmentation improves selection precision while reducing overall processing complexity by avoiding the need to evaluate all networks simultaneously.
Data Source
AI summary
A method includes provisioning a multi-mode wireless communications terminal with at least one system priority list (SPL) having information that identifies a plurality of wireless network system types and, for each identified wireless network system type, at least one wireless network of that type. The method selects from the SPL a wireless network for service selectively based on one of a manually specified priority, a priority specified automatically and a priority that is specified for use automatically only during a power-on mode of operation.