LADN Service Access Control via Subscription Verification
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Solution Overview
Problem
In a non-subscription model for local area data network (LADN) services in 5G communication systems, there is a challenge of unnecessary traffic and resource waste due to the transfer of LADN information to all terminals, even if only a few intend to use the service, leading to inefficient use of radio resources.
Innovation Solution
A method where LADN information is transferred only to terminals that explicitly request it, with the access and mobility management function (AMF) determining the subscription status and the session management function (SMF) managing packet transfer based on the terminal's location within the LADN service area, allowing or rejecting session creation and packet transfer accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If LADN information is transferred to all terminals in a non-subscription model, then any terminal can potentially access the service, but unnecessary signaling traffic and resource waste occur
Solution Approach 1:
The AMF performs preliminary subscription verification before transferring LADN information to terminals. By checking whether terminals have subscribed to LADN services in advance, the system prevents unnecessary information transfer to terminals that do not intend to use the service, thereby reducing signaling traffic while maintaining service accessibility for subscribed terminals
Solution Approach 2:
The patent extracts the subscription verification step from the general terminal registration process and applies it specifically to LADN service access control. This selective extraction allows the system to differentiate between terminals that should receive LADN information and those that should not, resolving the contradiction between broad accessibility and resource efficiency
2Reliability
If LADN information is transferred to all terminals, then service availability is maximized, but signaling traffic increases unnecessarily
Solution Approach 1:
The system implements feedback mechanisms where terminals indicate their LADN service subscription status to the AMF. The AMF uses this feedback information to determine whether to transfer LADN information, ensuring that service availability is maintained for subscribed terminals while avoiding unnecessary signaling traffic to non-subscribed terminals
3Adaptability or versatility
If packet transfer is allowed for all terminals requesting LADN service, then service accessibility is improved, but resource waste occurs for terminals outside service area
Solution Approach 1:
The patent applies local quality by implementing location-based service delivery. The AMF determines whether terminals are within the LADN service area before allowing packet transfer. This ensures that service accessibility is maintained for terminals both inside and outside the service area, while radio resources are efficiently utilized by only transferring packets to terminals actually located within the designated service area
Data Source
AI summary
The disclosure relates to a communication technique and system for converging a 5G communication system for supporting higher data rates beyond a 4G system with an IoT technology. The disclosure relates to a wireless communication system, and more particularly, to a method and an apparatus for providing a local area data network service based on a non-subscription model in a cellular wireless communication system (5G system).