User Equipment Network Selection Policy Integration
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Solution Overview
Problem
Current network selection procedures in wireless communications lack efficient integration of network selection and service provider selection policies, leading to conflicts and inefficiencies in 3GPP WLAN selection and ANDSF-based mechanisms.
Innovation Solution
A method implemented by user equipment (UE) to obtain network selection and service provider selection policies, generating lists of candidate wireless networks and service providers, and selecting a network to connect to based on these policies, while utilizing a signaling loss timer to optimize the selection process and resolve conflicts between 3GPP WLAN selection and ANDSF policies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If 3GPP WLAN selection mechanism is used, then network selection capability is provided, but conflict with ANDSF policies occurs and selection efficiency deteriorates
Solution Approach 1:
The system pre-generates a list of candidate wireless networks based on network selection policy before the actual network selection process. This preliminary action separates the candidate generation from the final selection, allowing the UE to efficiently evaluate only pre-filtered candidates against service provider selection policy, thereby resolving conflicts between 3GPP WLAN selection and ANDSF policies while improving selection efficiency
Solution Approach 2:
The network selection process is divided into two independent stages: (1) generating candidate wireless networks based on network selection policy, and (2) selecting final network based on service provider selection policy. This segmentation allows each stage to operate independently without conflict, enabling both 3GPP WLAN selection and ANDSF mechanisms to function effectively in their respective domains
2Productivity
If network selection and service provider selection are integrated, then selection efficiency is improved, but policy conflict resolution complexity increases
Solution Approach 1:
The integrated selection process is segmented into two distinct phases with clear boundaries: candidate network generation phase (using network selection policy) and final network selection phase (using service provider selection policy). This segmentation simplifies conflict resolution by ensuring that each policy operates in its designated phase without interference, maintaining low complexity while achieving high efficiency
Solution Approach 2:
The system performs preliminary filtering of wireless networks based on network selection policy before applying service provider selection policy. This preliminary action reduces the search space and eliminates potential conflicts early in the process, as only pre-approved candidate networks are considered for final selection, thereby maintaining simplicity while improving efficiency
Data Source
AI summary
Embodiments are provided for supporting network selection for wireless networks and network service providers/operators. The embodiments include procedures that integrate wireless network and service provider/operator selection policies and methods. In an embodiment, the UE obtains a network selection policy from a network, and hence generates a list of candidate wireless networks according to the network selection policy. The UE then selects from the list a wireless network to connect to according to a service provider selection policy. Such procedures improve Access Network Discovery and Selection Function (ANDSF) based wireless local area network (WLAN) selection with service provider selection capability. The procedures also collaborate ANDSF based policy and existing I-WLAN selection, and resolve conflicts between 3GPP WLAN selection and ANDSF policy for WLAN selection.