5G Stand-Alone Non-Public Network System Information Block Segmentation
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Solution Overview
Problem
5G non-public networks face challenges in supporting stand-alone operations, UE onboarding, and providing IMS voice and emergency services, particularly due to high signaling overhead and the complexity of managing multiple service providers, as well as the lack of clear signaling changes required for emergency services.
Innovation Solution
A method involving the transmission and reception of system information blocks that include Group IDs for network selection, allowing UEs to access non-public networks using credentials from external credential holders and enabling onboarding, while also supporting emergency services by broadcasting Group IDs and indicating network support for IMS emergency calls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple service providers are supported in stand-alone non-public networks, then network versatility and service coverage are improved, but signaling overhead and system complexity increase
Solution Approach 1:
The patent segments the service provider information into separate system information blocks (SIBs), with each SIB containing information for a specific service provider. This allows the network to broadcast multiple service provider configurations without creating a single overly complex information structure, thereby supporting network versatility while managing system complexity through modular organization
Solution Approach 2:
The patent introduces a new dimension for organizing service provider information by creating separate SIBs for each service provider rather than consolidating all information in a single SIB. This dimensional separation allows the system to handle multiple service providers independently, improving versatility while keeping each individual SIB manageable in size and complexity
2Measurement precision
If detailed service provider information is broadcast in system information blocks, then network selection accuracy is improved, but signaling overhead increases
Solution Approach 1:
The patent divides service provider information into separate system information blocks, where each SIB contains information for a specific service provider. This segmentation allows the network to broadcast only the necessary information for each provider independently, improving network selection accuracy while reducing overall signaling overhead compared to broadcasting all information in a single large SIB
Solution Approach 2:
The patent implements partial broadcasting by creating separate SIBs that contain only the specific service provider information needed for each provider, rather than broadcasting complete information for all providers in every SIB. This partial action approach maintains network selection accuracy for each provider while reducing the total quantity of signaling overhead
Data Source
AI summary
The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. A method performed by a user equipment (UE) in a wireless communication system is provided. The method includes receiving, from a base station, first system information including information on at least one stand-alone non-public network (SNPN), receiving, from the base station, second system information including information on a first list of at least one group identifier for network selection (GIN) to support an access using credentials from a credentials holder or to enable a UE onboarding and information on a second list of associations between the at least one GIN and the at least one SNPN in the first system information, selecting an SNPN based on the first system information and the second system information; and performing, with the base station, a radio resource control (RRC) establishment for the selected SNPN.