QoS Management in Wireless Systems via Flow Bearer Mapping
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Solution Overview
Problem
The existing LTE system's QoS management method based on end-to-end bearers cannot satisfy the independent evolution requirements of QoS frameworks for both the core network and radio access network, and it lacks flexibility in managing diverse QoS requirements for various wireless communication services.
Innovation Solution
The proposed method and system allow for independent evolution of QoS frameworks in the core network and radio access network by enabling different mapping relationships between service flows and bearers, enabling flexible QoS management through separate QoS control methods based on distinct resource usage in each network, with the core network and radio access network implementing independent control over service flow and bearer transmission manners.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If multiple service data flows are mapped to one EPS bearer, then signaling overhead is reduced, but QoS differentiation capability is lost
Solution Approach 1:
The patent segments the QoS control function into two independent parts: core network QoS control (end-to-end bearer level) and radio access network QoS control (service flow level). This segmentation allows each part to operate at its own granularity - the core network manages broader bearer-level QoS with less signaling, while the radio access network provides fine-grained service flow differentiation, thus resolving the contradiction between reduced signaling overhead and maintained QoS differentiation capability.
2Device complexity
If a unified QoS framework is used across core network and radio access network, then system simplicity is maintained, but independent evolution and flexibility are limited
Solution Approach 1:
The patent implements a dynamic QoS control mechanism where the radio access network can independently adjust service flow QoS parameters based on real-time radio resource conditions, while the core network maintains its end-to-end bearer QoS framework. This dynamic separation allows each network segment to evolve independently and adapt to changing requirements without requiring changes to the entire system, thus resolving the contradiction between system simplicity and independent evolution capability.
3Ease of operation
If bearer-level QoS control is used, then implementation simplicity is maintained, but service flow granularity is insufficient
Solution Approach 1:
The patent introduces a service flow mapping mechanism as an intermediary layer between the bearer-level QoS control in the core network and the fine-grained service flow requirements. This intermediary allows service flows to be mapped to bearers while maintaining the ability to differentiate QoS at the service flow level through radio access network control, thus resolving the contradiction between implementation simplicity and QoS control granularity.
Data Source
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AI summary
The present invention discloses a method and an apparatus for managing quality of service in a wireless communications system. A radio access network device receives service data through n bearers between a core network device and the radio access network device, where the service data includes a plurality of service flows mapped to the n bearers, and n is an integer greater than or equal to 1. The radio access network device performs flow demapping of the received service data according to a QoS rule, to obtain the plurality of service flows. The radio access network device maps, according to the QoS rule, at least some of the plurality of service flows obtained through the flow demapping to t bearers between the radio access network device and a user equipment for transmission, where t is an integer greater than or equal to 1.