Dynamic QoS Enforcement via User Plane Function Relocation
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Solution Overview
Problem
Current communication systems do not effectively allow for dynamic modification of Quality of Service (QoS) parameters such as latency, jitter, and bit/packet error rate, failing to enforce new latency settings and not re-selecting user plane functions accordingly.
Innovation Solution
The system evaluates QoS parameters and initiates re-location or re-selection of user plane network functions when changes are detected, using control plane network functions like SMF, AMF, and PCF to ensure compliance with updated QoS requirements, enabling dynamic and secure QoS management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the prior art communication system maintains fixed user plane functions, then system stability is preserved, but the ability to adapt to modified latency parameters is lost
Solution Approach 1:
The patent implements dynamic re-selection of user plane functions based on modified QoS parameters. The system transitions from static UPF selection to dynamic re-selection triggered by QoS parameter changes, allowing the communication system to adapt to varying latency requirements while maintaining operational stability through controlled re-selection procedures
Solution Approach 2:
The patent establishes a feedback mechanism where the system monitors QoS parameter modifications and triggers re-selection of user plane functions accordingly. The control plane receives QoS parameter updates, evaluates the need for re-selection, and executes appropriate actions, creating a closed-loop system that adapts to changing service quality requirements
2Reliability
If the prior art system does not re-select user plane functions, then operational simplicity is maintained, but enforcement of new latency parameters fails
Solution Approach 1:
The patent implements preliminary evaluation of QoS parameter changes before executing re-selection of user plane functions. The control plane assesses whether modified parameters warrant re-selection, preparing and validating the re-selection process in advance to ensure reliable QoS parameter enforcement while avoiding unnecessary operational complexity
Solution Approach 2:
The patent directly addresses parameter changes by linking QoS parameter modifications to user plane function re-selection. When latency or other QoS parameters are modified, the system automatically triggers re-selection of appropriate user plane functions to enforce the new parameters, ensuring reliability through parameter-driven adaptive behavior
3Adaptability or versatility
If dynamic QoS parameter modification is enabled, then service flexibility is improved, but control and security mechanisms must be enhanced
Solution Approach 1:
The patent segments the QoS control functionality into distinct control plane network functions that handle specific aspects of QoS management. This segmentation allows dynamic QoS parameter modification while distributing control and security responsibilities across multiple specialized functions, reducing overall system complexity through functional decomposition
Solution Approach 2:
The patent introduces control plane network functions as intermediaries between QoS parameter requests and user plane function execution. These intermediary functions provide context awareness, security validation, and coordinated control, enabling flexible dynamic QoS modification while maintaining system security and reducing the complexity burden on individual components
Data Source
AI summary
On a control plane or on a user plane of a communication system, a parameter of service quality for a session between a user equipment and a data network is received (S2B01), the parameter is evaluated (S2B02) for a change of the parameter, and based on the evaluation (S2B03), the change of the parameter is reported (S2B04) to the control plane of the communication system. On the control plane, the parameter is received (S2A01). The parameter is evaluated (S2A02), and based on the evaluation (S2A03), re-location of a user plane network function is initiated and/or a new user plane network function is inserted (S2A04).