PDU Set Capability Signaling for Differentiated 5G QoS Handling
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Solution Overview
Problem
Existing 5G systems face challenges in efficiently handling PDU sets for XR and media services, leading to resource wastage due to dropped packets, as they lack effective PDU set integrated packet handling and differentiated QoS handling.
Innovation Solution
Implementing PDU set handling capability indication mechanisms, including PDU set identification and GTP-U header marking at UPF and RAN nodes, to manage PDU sets based on their importance, ensuring efficient resource allocation and differentiated QoS handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If PDU set integrated packet handling is implemented, then resource allocation efficiency is improved, but device complexity increases
Solution Approach 1:
The patent segments PDU sets into groups of packets with identical importance requirements, allowing differentiated handling strategies for each segment. This enables the system to apply PDU set integrated packet handling only where beneficial, reducing overall complexity while maintaining efficiency improvements for critical traffic types.
Solution Approach 2:
The patent introduces dynamic configuration mechanisms where the network can activate or deactivate PDU set handling based on current network conditions and traffic characteristics. This dynamic approach allows the system to adapt to changing conditions, maintaining high efficiency when needed while avoiding complexity during less critical periods.
2Reliability
If differentiated QoS handling is implemented, then service quality is improved, but device complexity increases
Solution Approach 1:
The patent applies local quality by treating different PDU sets with different QoS parameters based on their individual importance requirements. Each PDU set can have customized handling characteristics (priority, resource allocation, error handling) tailored to its specific needs, improving service quality for critical applications without uniformly increasing complexity across the entire network.
Solution Approach 2:
The patent implements differentiated QoS handling selectively for PDU sets that require it, rather than applying complex differentiation uniformly to all traffic. This partial action approach maintains high service quality for critical PDU sets while using simpler handling for less important traffic, thereby limiting the complexity increase to only where necessary.
3Reliability
If PDU sets are handled integrally, then packet loss impact is reduced, but radio resources are wasted
Solution Approach 1:
The patent extracts individual packets from PDU sets and applies selective dropping based on their importance levels. By separating the handling of individual packets from the integral PDU set treatment, the system can discard unimportant packets that would otherwise waste radio resources, while maintaining integral handling for critical PDU sets where packet loss would severely impact service quality.
Data Source
AI summary
Method and apparatus for PDU set handling capability indication are disclosed. In one embodiment, session management function (SMF) comprises a processor and a transceiver coupled to the processor, wherein the processor is configured to determine PDU set handling capability of a RAN node; and transmit, via the transceiver, to UPF, an indication of activating or deactivating PDU set handling for PDU session or QoS flow (s) according to the PDU set handling capability of the RAN node to which the UPF is connected.