5G PDU Session Switching to Higher-Priority Network Routes
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Solution Overview
Problem
Existing 5G network technologies fail to inform user equipment devices of higher priority network routes becoming available, preventing applications from switching to these routes when the device moves to new locations, thus compromising quality of service.
Innovation Solution
Configuring user equipment devices to detect and inform applications of higher priority network routes becoming available, allowing them to switch from current routes to these higher priority routes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the network maintains existing protocol data unit sessions on current routes, then session stability is preserved, but quality of service deteriorates when higher priority routes become available
Solution Approach 1:
The patent implements dynamic route selection by enabling user equipment to detect available network routes and dynamically switch protocol data unit sessions between routes based on priority and quality of service conditions. The system transitions from static route assignment to dynamic route optimization, allowing sessions to adaptively move to higher priority routes when conditions change.
Solution Approach 2:
The patent establishes a feedback mechanism where the network provides information about available routes to user equipment, and user equipment monitors route conditions and provides feedback for session management decisions. This feedback loop enables the system to respond to changing network conditions and optimize quality of service while maintaining session stability.
2Productivity
If user equipment continuously monitors for higher priority routes, then quality of service improves, but device complexity increases
Solution Approach 1:
The patent enables user equipment to autonomously perform route detection and session management without requiring complex centralized control. The device independently monitors available routes, evaluates their priority and suitability, and makes switching decisions based on pre-configured policies, reducing the need for complex network-side coordination.
Solution Approach 2:
The patent simplifies monitoring complexity by changing the monitoring parameters from continuous full-route scanning to event-driven detection based on specific triggers such as location changes or network condition changes. This parameter adjustment reduces computational overhead while maintaining quality of service improvements.
3Productivity
If protocol data unit sessions are switched to higher priority routes, then quality of service improves, but session stability may deteriorate due to frequent switching
Solution Approach 1:
The patent implements preliminary actions by pre-configuring route selection policies and criteria before sessions need to be switched. User equipment is provided with advance information about available routes and their characteristics, allowing it to make informed switching decisions only when necessary, rather than频繁 switching based on transient conditions.
Solution Approach 2:
The patent provides a cushioning mechanism by maintaining session state information and route availability data in advance, allowing smooth transitions when switching is required. The system prepares switching configurations beforehand and implements gradual transitions to minimize disruption to session stability while capturing quality of service improvements.
Data Source
AI summary
In one example, a method includes detecting that a user equipment device has moved to a location in a telecommunications network in which a first network route is available, where the first network route has a higher priority than a second network route with which an application executing on the user equipment device has established a current protocol data unit session, determining that the application should switch the current protocol data unit session to the first network route, and supporting the application in switching the current protocol data unit session from the second network route to the first network route.