URSP Rule-Based PDU Session Establishment in 5G Devices
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Solution Overview
Problem
In 5G communication systems, the establishment of Protocol Data Unit (PDU) sessions is hindered due to the lack of direct provision of route selection descriptors from User Equipment (UE) to applications, leading to reduced availability of corresponding sessions.
Innovation Solution
An electronic device obtains a User Equipment Route Selection Policy (URSP) rule including traffic and route selection descriptors, identifies corresponding time and place information, and provides notifications to applications, enabling the establishment of PDU sessions based on matching criteria from the route selection descriptors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If PDU sessions are established without checking time and place conditions, then network connection availability is improved, but network resource waste and inappropriate connections increase
Solution Approach 1:
The system performs preliminary actions by obtaining URSP rules and extracting time information and place information before establishing PDU sessions. The electronic device proactively determines whether current time and location match the conditions specified in route selection descriptors, and only establishes sessions when conditions are met, thereby avoiding wasted network resources while ensuring connections are available when needed.
2Device complexity
If route selection descriptors are not provided to applications, then system complexity is reduced, but application ability to establish appropriate sessions deteriorates
Solution Approach 1:
The electronic device acts as an intermediary between the network and applications. It obtains URSP rules from the network, extracts time information and place information from route selection descriptors, and uses this information to determine whether to establish PDU sessions for applications. This intermediary approach allows the system to maintain simplicity while enabling applications to establish appropriate sessions based on time and location conditions.
3Speed
If PDU sessions are established without time and place verification, then connection speed is improved, but connection appropriateness and reliability deteriorate
Solution Approach 1:
The system performs preliminary verification of time and place conditions before initiating PDU session establishment. By obtaining URSP rules and checking whether current conditions match route selection descriptors in advance, the system ensures connection appropriateness while maintaining efficient session establishment when conditions are met.
Data Source
AI summary
According to various embodiments, an electronic device obtains a user equipment route selection policy (URSP) rule including at least one traffic descriptor and at least one route selection descriptor; identifies that a time identified by the electronic device and/or a place identified by the electronic device corresponds to first time information and/or first place information, included in a first route selection descriptor among the at least one route selection descriptor; provides a notification to a first application identified by a first traffic descriptor among the at least one traffic descriptor corresponding to the first route selection descriptor; and performs, based on identification of a network connection request from the first application that received the notification, at least one operation for establishing a protocol data unit (PDU) session based on the first route selection descriptor corresponding to the first application.