WLAN Selection Policy Using URSP Rule Mapping and Priority Evaluation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless transmit/receive units (WTRUs) face challenges in efficiently managing wireless local area network (WLAN) selection and reselection based on dynamic priority rules and location validity conditions, leading to suboptimal network connectivity and resource utilization.
Innovation Solution
A method for a WTRU to receive and apply WLAN selection policy (WLANSP) rules and user equipment route selection policy (URSP) rules, determining route selection descriptors (RSDs) for traffic associated with applications, and performing evaluation procedures to establish or release PDU sessions in appropriate WLAN access networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If WTRU evaluates multiple WLANSP rules with priority ordering, then network connectivity is improved, but device complexity increases due to multiple evaluation procedures
Solution Approach 1:
The patent segments the WLAN selection process into distinct evaluation procedures corresponding to different priority levels. Each priority level has its own evaluation procedure that checks specific rules, allowing the system to break down the complex multi-rule evaluation into manageable sequential steps that are easier to implement and manage.
Solution Approach 2:
The patent implements preliminary action by establishing priority ordering of WLANSP rules before evaluation begins. The system pre-configures the evaluation sequence and validity conditions, so that when multiple rules apply, the highest priority rule is automatically evaluated first without requiring complex real-time decision logic during operation.
2Adaptability or versatility
If WTRU applies location and time validity conditions to WLANSP rules, then adaptability is improved, but measurement precision requirements increase
Solution Approach 1:
The patent applies local quality by implementing location-specific and time-specific validity conditions for different WLANSP rules. Each rule can have customized validity parameters tailored to its specific context, allowing the system to adapt WLAN selection to local conditions without requiring uniform high-precision measurements across all scenarios.
3Productivity
If WTRU establishes and releases PDU sessions based on WLANSP rule evaluation, then resource utilization is improved, but loss of time occurs during session management
Solution Approach 1:
The patent implements periodic action through the structured sequence of evaluation procedures that are triggered at specific points in the WLAN selection process. Rather than continuously managing PDU sessions, the system performs evaluation and session management actions periodically at defined stages, reducing overhead while maintaining effective resource utilization.
Data Source
AI summary
A method performed by a wireless transmit/receive unit (WTRU) may comprise: receiving configuration information, one or more WLANSP rules, and one or more URSP rules; determining a first RSD of a URSP rule for traffic associated with a first application, wherein the configuration information indicates that the first RSD is associated with a first WLANSP rule ID; performing a first WLANSP rule evaluation procedure; determining that the first WLAN rule ID is associated with a first PDU session determining a second RSD of a URSP rule for traffic associated with a second application, wherein the configuration information indicates that the second RSD is associated with a second WLANSP rule ID; and performing a second WLANSP rule evaluation procedure.