Personalized Neighboring Cell List Distribution for Mobile Terminals
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Solution Overview
Problem
Current mobile telecommunications networks cannot effectively manage and communicate lists of neighboring cells to mobile terminals, particularly restricted access cells, leading to unnecessary measurements and access attempts by unauthorized terminals.
Innovation Solution
A centralized management system using a server with a database to store user-specific restricted access cell identifiers and detection zones, allowing only authorized terminals to connect to these cells by dynamically updating their CELL-INFO-LIST with relevant cell identifiers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the network broadcasts or sends the list of neighboring cells to all mobile terminals using standard messages (SIB 11, SIB 12, or Measurement Control), then all terminals receive the same cell identifiers, but unauthorized terminals perform unnecessary measurements and access attempts on restricted access cells
Solution Approach 1:
The patent applies local quality by personalizing the neighboring cell list for each mobile terminal based on its subscription data and location. Instead of providing a universal list, the network dynamically generates terminal-specific lists that include only relevant restricted access cells for which the terminal has authorization. This ensures that each terminal receives customized information tailored to its specific access rights and geographical context.
Solution Approach 2:
The patent implements preliminary action by pre-configuring the network with subscription data that links mobile terminals to their authorized restricted access cells. Before broadcasting or sending neighboring cell lists, the network pre-processes this information to identify which restricted access cells should be included for each terminal. This preliminary configuration prevents unauthorized terminals from receiving and attempting to access cells they are not permitted to use.
2Loss of information
If the network includes all restricted access cell identifiers in the broadcast or sent lists, then complete information is provided to all terminals, but the list size exceeds the terminal's storage capacity of 32 identifiers
Solution Approach 1:
The patent applies the extraction principle by selectively removing irrelevant restricted access cell identifiers from the neighboring cell list provided to each terminal. Instead of including all restricted access cells in the network, the system extracts only those cells that are both geographically relevant to the terminal's current location and authorized for the terminal's subscription. This extraction process ensures the list remains within the 32-identifier limit while maintaining completeness of authorized access information.
Solution Approach 2:
The patent implements segmentation by dividing the comprehensive restricted access cell information into terminal-specific segments. Each mobile terminal receives a customized subset of the total restricted access cells, segmented according to its authorization level and location. This segmentation allows the network to manage large numbers of restricted access cells without overwhelming any single terminal's storage capacity.
3Adaptability or versatility
If the network uses standardized messaging protocols to communicate neighboring cell lists, then compatibility across all terminals is maintained, but personalized access control for restricted cells cannot be implemented
Solution Approach 1:
The patent applies dynamics by making the neighboring cell list dynamic and adaptable rather than static and universal. The network dynamically generates and updates the list of restricted access cells for each terminal based on real-time factors such as the terminal's current location, subscription status, and authorized access rights. This dynamic approach allows standardized messaging protocols to carry personalized information, maintaining compatibility while enabling customized access control.
Solution Approach 2:
The patent implements parameter changes by modifying the content parameters of the neighboring cell list message based on the specific terminal receiving it. While the message structure and protocol remain standardized, the actual cell identifiers included in the list change according to the terminal's authorization parameters. This allows the same standardized messaging mechanism to deliver both universal and terminal-specific information.
Data Source
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AI summary
According to the invention, an access point to a restricted-access cell in a cellular network detects at least one cell of the cellular network in the vicinity of which it is located. It further transmits to a cellular network server, an identifier (RAC1) of the restricted-access cell, an identifier of the detected cell(s) and an identifier of at least one user (U1) authorised to access the restricted-access cell. Upon the reception, the server stores this information in a database (26) and can then transmit to a mobile terminal (10) of said user (U1), the identifier (RAC1) of the restricted-access cell that he is authorised to access. This transmission can be carried out when the server detects that the mobile terminal (10) is in the vicinity of the restricted-access cell and/or periodically and/or upon a modification of the information stored in the server database (26).