Dedicated QoS Flow Routing for Priority Traffic in 5G Sessions
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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.
Innovation Solution
Implementing multiple QoS flows within a single PDU session or routing through separate DNNs to segregate high-priority and non-high-priority traffic, using distinct QoS parameters and network slices to manage resources efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all data traffic from priority users is routed through high-QoS flows, then service quality for priority users is improved, but network resource usage and power consumption increase unnecessarily
Solution Approach 1:
The patent segments data traffic into high-priority and non-high-priority categories within the same PDU session, routing only high-priority packets through dedicated QoS flows with high network resources, while non-high-priority packets use default QoS flows with lower resources. This segmentation resolves the contradiction by ensuring service quality for priority traffic while avoiding unnecessary resource consumption for non-priority traffic.
Solution Approach 2:
The patent applies local quality by assigning different QoS characteristics to different packets based on their priority level. High-priority packets receive enhanced QoS treatment (higher bandwidth, lower latency) only when needed, while non-high-priority packets use standard QoS. This localized quality adjustment maintains service quality where required while reducing overall energy consumption.
2Reliability
If dedicated QoS flows with high network resources are established for priority users, then data transmission reliability is improved, but network resource efficiency deteriorates
Solution Approach 1:
The patent implements dynamic QoS flow selection based on packet priority. Instead of establishing dedicated high-resource QoS flows for all traffic from priority users, the system dynamically selects appropriate QoS flows for each packet based on its priority level. High-priority packets dynamically access dedicated QoS flows when needed, while non-high-priority packets use shared default flows, thereby maintaining transmission reliability for critical data while improving overall network resource efficiency.
Solution Approach 2:
The patent applies partial action by providing high-QoS treatment only to the extent necessary—specifically, only to high-priority packets that require enhanced service quality. Non-high-priority packets receive standard QoS treatment. This partial application of high-QoS resources maintains data transmission reliability for critical traffic while avoiding excessive resource allocation that would harm network efficiency.
3Measurement precision
If multiple QoS flows are implemented within a single PDU session, then traffic management precision is improved, but system complexity increases
Solution Approach 1:
The patent segments traffic management into multiple QoS flows within a single PDU session, creating distinct channels for high-priority and non-high-priority traffic. Each QoS flow has specific filter criteria and parameters tailored to its traffic type. This segmentation improves traffic management precision by enabling fine-grained control over different packet types while maintaining a unified PDU session structure that limits overall system complexity.
Data Source
AI summary
Technology that includes receiving a first data packet associated with a data communication session established between a user equipment (UE) and a wireless network, and determining that the first data packet is associated with a first level of priority different from a second level of priority. In response, a first quality-of service (QoS) flow is selected, the first QoS flow defined by a first set of QoS parameters associated with a first set of network resources. The first QoS flow is different from a second QoS flow defined by a second set of QoS parameters associated with a second set of network resources. Each of the first QoS flow and the second QoS flow pertain to the same data communication session. The first data packet can be routed over the first QoS flow supported by the first set of network resources within the data communication session.