5G Data Offloading Rules for On-Demand UPF Activation
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Solution Overview
Problem
In existing 5G mobile communication systems, the user plane function (UPF) resources are underutilized due to idle offloading systems when users do not immediately engage in data exchange with dedicated networks after going online, leading to resource waste.
Innovation Solution
A method for constructing a data offloading system that involves determining a target service offloading rule based on a data network access identifier (DNAI), constructing a service detection rule, and triggering the establishment of a UPF resource-based offloading system only when a user's access packet meets a preset condition, thereby optimizing resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the offloading system is established immediately when a user goes online, then the user can access dedicated network services without delay, but UPF resources are wasted due to idle offloading systems
Solution Approach 1:
The system performs preliminary configuration by establishing the offloading system in advance based on subscription plans and service requirements, but keeps it in a low-power or idle state until actually needed. This allows the system to be ready for immediate service delivery while consuming minimal resources during idle periods.
Solution Approach 2:
The offloading system dynamically adjusts its state based on actual service demand. The system transitions from an idle state to an active state only when a user actually accesses dedicated network services, and can transition back to idle state when services are no longer needed. This dynamic adaptation resolves the contradiction between readiness and resource efficiency.
2Ease of manufacture
If the offloading system is established for all users who go online, then resource allocation is simplified, but resource waste increases due to idle systems
Solution Approach 1:
Instead of uniformly establishing offloading systems for all users, the system applies different configurations based on local conditions - specifically, whether a user actually needs dedicated network services. The PCF analyzes user profiles, service subscriptions, and access patterns to determine which users require offloading capabilities, applying resources only where needed rather than universally.
Solution Approach 2:
The system changes the state parameter of the offloading system from a static 'always-on' configuration to a dynamic 'on-demand' configuration. By monitoring service access events and user behavior parameters, the system adjusts the activation state of UPF resources, transitioning them between active and idle states based on actual service requirements rather than maintaining constant allocation.
3Loss of energy
If the offloading system waits for actual service access to be established, then resource utilization improves, but service delivery delay increases
Solution Approach 1:
The system performs preliminary准备工作 by pre-configuring offloading policies and maintaining ready-state UPF resources for users with confirmed service subscriptions. While the full offloading system isn't activated until needed, the foundational configuration and resource reservation happen in advance, enabling rapid activation when service access is actually requested without full setup delays.
Data Source
AI summary
The present application provides a construction method for a data offloading system. The method may include: acquiring a candidate service offloading rule sent by a PCF, and determining, according to a DNAI, a target service offloading rule from the candidate service offloading rule; constructing a service detection rule according to the target service offloading rule; determining a target central UPF according to the target service offloading rule, generating an establishment request according to the service detection rule, and sending the establishment request to the target central UPF, wherein the target central UPF is configured to identify a UE access packet according to the service detection rule, and in response to a detection result of the UE access packet satisfying a preset condition, cache the UE access packet and send an offloading instruction to the SMF; and constructing a UPF resource-based data offloading system according to the offloading instruction.