Dedicated DNN Routing for Priority Traffic in 5G QoS Flows
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Solution Overview
Problem
In advanced wireless networks like 5G SA, prioritizing data traffic for high-priority users can lead to unnecessary overuse of network resources and increased power consumption due to indiscriminate routing of both high-priority and non-high-priority data through high-QoS flows or sessions.
Innovation Solution
Implementing separate QoS flows or DNNs for high-priority and non-high-priority data traffic within the same PDU session, with distinct QoS parameters, to ensure high-priority traffic is only routed through dedicated high-QoS flows and non-high-priority traffic uses default, less resource-intensive flows or sessions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high-priority user data traffic is routed through dedicated high-QoS flows or sessions, then service quality for priority users is improved, but network resource consumption and power usage increase unnecessarily for non-priority traffic
Solution Approach 1:
The patent segments data traffic into high-priority and non-high-priority categories, routing them through different QoS flows within the same PDU session. High-priority traffic uses dedicated high-QoS flows while non-priority traffic uses default flows, preventing unnecessary resource consumption for non-priority data while maintaining service quality for priority users.
Solution Approach 2:
The patent applies different QoS characteristics to different portions of data traffic based on priority levels. Instead of applying high-QoS parameters uniformly to all traffic from priority users, the system applies high-QoS parameters only to high-priority data packets locally, while non-priority packets use standard QoS parameters, optimizing resource usage.
2Productivity
If separate QoS flows are implemented for high-priority and non-high-priority traffic, then network resource efficiency is improved, but system complexity increases
Solution Approach 1:
The patent merges multiple QoS flows (high-priority and non-high-priority) within a single PDU session. This allows the system to maintain separate QoS treatments for different traffic types while using a unified session framework, reducing the complexity that would arise from implementing completely separate sessions for each traffic type.
Solution Approach 2:
The PDU session is designed to serve multiple functions by accommodating both high-priority and non-high-priority QoS flows simultaneously. This multi-functional approach allows a single session to handle diverse traffic types with different QoS requirements, reducing overall system complexity compared to requiring separate sessions for each function.
Data Source
AI summary
Technology that includes receiving, at a user equipment (UE), a first data packet to be communicated between the UE and a wireless network, and determining, based on one or more parameters associated with the first data packet and one or more configured rules, that the first data packet is associated with a first level of priority different from a second level of priority. In response, a determination is made to use—among (i) a first data network name (DNN) and (ii) a second DNN—the first DNN and an associated network slice to route the first data packet. The first DNN and a corresponding QoS flow is defined by a first set of quality-of-service (QoS) parameters different from a second set of QoS parameters associated with the second DNN. A first data communication session is established with the first DNN, and the first data packet is routed over the session.