Deterministic Network Policy Control via PCF for PDU Session QoS
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Solution Overview
Problem
Existing communication networks face challenges in efficiently managing deterministic networks (DetNet) due to the lack of effective policy control and management of user plane sessions, leading to suboptimal resource allocation and quality of service.
Innovation Solution
Implementing a Policy Control Function (PCF) within the core network to manage and optimize policy information for PDU sessions in deterministic networks, ensuring efficient resource allocation and quality of service.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If centralized policy control is implemented to manage deterministic networks, then resource allocation efficiency and quality of service are improved, but network complexity and deployment difficulty increase
Solution Approach 1:
The patent introduces a Policy Control Function (PCF) as an intermediary component that mediates between network elements and deterministic network services. The PCF centralizes policy control, managing resource allocation and QoS parameters without requiring complex modifications to existing network elements, thus improving resource allocation efficiency while limiting the increase in overall network complexity.
2Reliability
If policy control functions are added to manage user plane sessions, then quality of service and resource allocation are optimized, but ease of operation and maintenance deteriorate
Solution Approach 1:
The Policy Control Function is designed as a universal, multi-functional component that can be deployed in various network configurations and scenarios. It provides standardized interfaces and procedures for managing deterministic networks, allowing the same core functionality to serve multiple purposes and reducing the operational burden through consolidation rather than proliferation of specialized components.
3Adaptability or versatility
If deterministic network support is integrated into existing network architecture, then adaptability and versatility are improved, but device complexity increases
Solution Approach 1:
The patent segments deterministic network support into distinct functional components, primarily the Policy Control Function, rather than integrating all deterministic networking capabilities into existing network elements. This segmentation allows deterministic network features to be added as a separate, manageable layer that interfaces with existing architecture, improving adaptability without proportionally increasing the complexity of individual network elements.
Data Source
AI summary
A PCF receives, from a SMF of a deterministic network (DetNet) node, a request message comprising one or more parameters, the one or more parameters comprising interface information indicating a status associated with an interface of the DetNet node. The PCF sends, to the SMF and in response to receiving the request message, policy information for a PDU session associated with the DetNet node.