Network Selection in Non-Public Networks Using Preconfigured Lists
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Solution Overview
Problem
Current 5G communication systems face challenges in efficiently selecting and utilizing non-public networks (NPNs) for providing services, particularly in IoT environments, where network resource consumption needs to be minimized while ensuring reliable and low-latency connectivity.
Innovation Solution
A method and apparatus for a user equipment (UE) and base station to identify and select suitable network groups within a non-public network by exchanging preconfigured lists of network identifiers, allowing for efficient initial access and resource management in 5G wireless communication systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a UE performs network selection by reading system information from multiple base stations, then network selection capability is improved, but radio resource consumption increases
Solution Approach 1:
The patent applies preliminary action by having the UE read and store system information from base stations in advance during initial access. The UE stores the S-NSSAI and PLMN ID information in its memory before making network selection decisions, so that when network selection is needed, the UE can quickly compare pre-stored information without needing to read system information from multiple base stations in real-time, thereby reducing radio resource consumption while maintaining network selection capability.
2Measurement precision
If a UE reads system information from multiple base stations for network selection, then network selection accuracy is improved, but processing time increases
Solution Approach 1:
The patent applies preliminary action by having the UE read and store system information from base stations in advance. The UE stores the S-NSSAI and PLMN ID information in its memory before making network selection decisions, so that when network selection is needed, the UE can quickly compare pre-stored information without needing to read system information from multiple base stations in real-time, thereby reducing processing time while maintaining network selection accuracy.
Solution Approach 2:
The patent applies copying by having the UE create a copy of the system information (S-NSSAI and PLMN ID) in its local memory. Instead of repeatedly reading from multiple base stations during network selection, the UE uses the copied information stored in memory to compare and select networks, significantly reducing the time required for network selection while maintaining accuracy.
3Adaptability or versatility
If a UE compares S-NSSAI and PLMN ID from multiple base stations, then network selection capability is improved, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the network selection process into distinct steps: first reading system information and extracting S-NSSAI and PLMN ID, then storing this information in memory, and finally comparing the stored information to make selection decisions. This segmentation simplifies the overall process by separating the complex tasks of information gathering, storage, and comparison into manageable stages, reducing the complexity burden on the UE.
Solution Approach 2:
The patent applies copying by having the UE create a local copy of the system information (S-NSSAI and PLMN ID) in its memory. This copying approach simplifies the UE's processing complexity by allowing it to compare network options using pre-stored data rather than continuously reading and processing information from multiple base stations, thereby reducing the computational burden while maintaining network selection capability.
Data Source
AI summary
A method and apparatus for discovering and selecting a network that provides connectivity for transmitting user subscription data is provided. A user equipment (UE) in a wireless communication system includes a transceiver and at least one processor configured to identify preconfigured first information comprising a first list, the first list comprising at least one identifier (ID) of at least one network group providing an initial access to a non-public network (NPN), receive, from at least one base station via the transceiver, second information comprising at least one second list, the at least one second list comprising at least one ID of at least one network group which is supported by the at least one base station and provides an initial access to the NPN, and select a network to be initially accessed from a network group corresponding to at least one ID included in the first list and the at least one second list, based on the first information and the second information.