Service Flow Priority Identifier for QoS Control
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Solution Overview
Problem
Current QoS technologies, such as those based on the 3GPP model, struggle to provide end-to-end differentiated service processing for various subscriber levels and service types in mobile communication networks, leading to issues like disordered packet loss and inefficient radio resource utilization.
Innovation Solution
A method and base station implementation using a one-dimensional scalar Service Flow Priority Identifier (FPI) to indicate and manage service flow priorities, enabling end-to-end control of quality of service by prioritizing downlink data packets based on their service flow and bearer weights.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a QoS model based on bearer-level classification is used, then network simplicity is maintained, but service flow priority differentiation cannot be implemented
Solution Approach 1:
The patent segments the QoS control mechanism by introducing a service flow priority identifier (FPI) that operates independently at the service flow level, while the underlying bearer structure remains unchanged. This allows priority differentiation without overhauling the entire network architecture.
Solution Approach 2:
The FPI acts as an intermediary element that carries priority information through the network without requiring complex processing at each node. The base station uses this simple identifier to implement priority-based scheduling, avoiding the need for complex end-to-end QoS management.
2Speed
If all packets in a bearer are treated equally, then processing simplicity is maintained, but high-priority services cannot be forwarded preferentially
Solution Approach 1:
The patent applies local quality by treating different service flows within the same bearer differently based on their FPI values. The base station performs local priority-based scheduling decisions for each service flow without requiring complex end-to-end QoS management.
Solution Approach 2:
The patent changes the scheduling parameter from uniform treatment to FPI-based weighted scheduling. The base station uses the FPI to dynamically adjust scheduling weights, enabling high-priority services to be forwarded preferentially while maintaining simple processing logic.
3Reliability
If end-to-end differentiated processing is not implemented, then network simplicity is preserved, but differentiated service experiences cannot be provided
Solution Approach 1:
The patent extracts the priority differentiation function from the complex end-to-end QoS management and concentrates it at the base station level. The FPI carries priority information through the network, and the base station performs the actual differentiated scheduling, simplifying the overall system.
Solution Approach 2:
The service flow itself carries its priority information through the FPI embedded in the data packets. Each service flow is self-identified by its FPI, allowing the base station to automatically perform differentiated scheduling without complex external control mechanisms.
Data Source
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AI summary
A method, a device, and a system for controlling quality of service are provided. The method includes: obtaining, by a policy and charging enforcement function PCEF entity, a service flow priority identifier FPI of a downlink data packet, where the FPI is used to indicate a priority of a service flow to which the downlink data packet belongs; carrying, by the PCEF, the FPI in the downlink data packet; and sending, by the PCEF, the downlink data packet to a base station, so that the base station sends the downlink data packet to a user equipment UE according to the FPI. By adopting the method, the device, and the system according to the embodiments of the present invention, end-to-end differentiated processing of a service flow can be implemented, differentiated experiences can be provided for different levels of subscribers and different types of services, and utilization efficiency of radio resources can be effectively improved.