Policy-Based Network Selection for QoS and Spectrum Constraints
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Solution Overview
Problem
Existing systems fail to efficiently manage network selection for users in non-public networks (NPNs) like music festivals, where radio spectrum capacity is limited, and users with varying subscriptions face challenges in ensuring high-quality service experiences across different networks.
Innovation Solution
Implementing policy-based network selection methods, including UE route selection policies (URSP) and network exposure functions, to determine optimal network transitions based on Quality-of-service (QoS) requirements, subscriptions, and application-specific policies, enabling secure and efficient network switching between standalone non-public networks (SNPN) and public land mobile networks (PLMN).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If users connect to a standalone non-public network (SNPN) for media applications, then network access control and service quality can be improved, but radio spectrum capacity is limited and cannot accommodate all users
Solution Approach 1:
The system segments users into different network groups based on application types and QoS requirements. Media applications are routed through SNPN for high quality, while other applications use PLMN, dividing the user base to match network capabilities
Solution Approach 2:
The system dynamically selects network pathways based on real-time conditions. The UE route selection policy enables dynamic routing decisions that adapt to network status, user subscriptions, and application requirements, allowing flexible switching between SNPN and PLMN
2Quantity of substance
If users connect to public land mobile networks (PLMN) for applications, then radio spectrum capacity is sufficient, but quality of service (QoS) cannot be guaranteed and additional costs are incurred
Solution Approach 1:
The policy node acts as an intermediary that evaluates QoS requirements and subscription status before routing traffic. It mediates between the UE and networks, ensuring that only qualified traffic receives SNPN resources while preventing unauthorized access
Solution Approach 2:
The system changes routing parameters based on QoS requirements and subscription status. The URSP policy includes parameters that dynamically adjust network selection based on application QoS needs, user subscriptions, and network conditions
3Reliability
If the system implements policy-based network selection with multiple networks, then QoS can be optimized and costs reduced, but system complexity increases
Solution Approach 1:
The UE autonomously executes network selection based on pre-configured URSP policies received from the policy node. The automatic application of routing rules without manual intervention simplifies operation despite the underlying system complexity
Solution Approach 2:
The policy node pre-calculates and distributes URSP routing policies to UEs before traffic generation. This preliminary configuration enables UEs to make immediate routing decisions without real-time complex calculations, reducing operational complexity
Data Source
AI summary
Apparatuses and methods for policy based selection of a network. In one embodiment, a method implemented in a user equipment (UE) includes obtaining a transfer policy from a policy node of a first network, the transfer policy being associated with a network selection for an application; and determining whether the application is to be transferred from using the first network to using a second network based at least in part on the obtained transfer policy, the first network being one of a standalone non-public network, SNPN, and a public land mobile network, PLMN and the second network being another one of the SNPN and the PLMN and the transfer policy being based at least in part on at least one of: (i) Quality-of-service, QoS, information associated with the application and (ii) whether the UE has a subscription to the second network.