Hybrid Cell Access Control via PLMN Identity Matching
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication networks, especially those using shared public land mobile network (PLMN) identities, there is a challenge with hybrid cells that are misidentified by user equipment (UE) as open cells, leading to unsuccessful connection attempts and network overload due to UEs lacking valid subscriptions for the associated closed subscriber group (CSG) subscriptions.
Innovation Solution
The solution involves identifying hybrid cells with shared PLMN identities and selectively performing access procedures based on whether the PLMN identity matches stored subscription information, allowing UEs to perform CSG cell access only when the identity is recognized, thereby reducing unnecessary connection attempts and improving network efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If hybrid cells with shared PLMN identities are configured as open cells, then network accessibility is improved, but network overload occurs due to unauthorized UEs attempting connection
Solution Approach 1:
The patent applies local quality by differentiating cell access behavior based on specific conditions: UEs check whether their stored PLMN identities match the hybrid cell's PLMN identity before attempting access. This creates localized access control rules rather than uniform open or closed cell behavior, allowing authorized UEs to connect while blocking unauthorized ones.
Solution Approach 2:
The patent implements preliminary action by requiring UEs to perform a preliminary check of PLMN identity matching before attempting to access hybrid cells. This pre-access verification prevents unauthorized connection attempts from reaching the network, thereby avoiding overload while maintaining accessibility for authorized devices.
2Adaptability or versatility
If UEs attempt connection to all hybrid cells, then network coverage is maximized, but unsuccessful connection attempts increase
Solution Approach 1:
The patent applies local quality by making connection attempts conditional on PLMN identity matching between the UE and hybrid cell. Instead of uniform connection behavior across all cells, UEs selectively attempt connections only to hybrid cells with matching PLMN identities, improving success rates while maintaining coverage for authorized devices.
3Productivity
If hybrid cells use shared PLMN identities, then resource utilization is improved, but authentication complexity increases
Solution Approach 1:
The patent applies self-service by enabling UEs to autonomously perform PLMN identity matching checks against their stored subscription information before attempting hybrid cell access. This self-performed authentication simplifies the overall system complexity by distributing the authentication logic to UEs rather than requiring complex centralized verification for each connection attempt.
Data Source
AI summary
Certain aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may receive a network identifier of a cell; determine that the cell is a first type of cell; and perform an access procedure to attempt to connect to the cell, wherein a first type of access procedure associated with the first type of cell or a second type of access procedure associated with a second type of cell is performed based at least in part on whether the network identifier indicates a particular type of access procedure. Numerous other aspects are provided.