Pdu set marking in QOS flows in a wireless communication network

EP4620177A1Pending Publication Date: 2025-09-24LENOVO (SINGAPORE) PTE LTD
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Patent Information

Application Number
EP2024726341
Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-06-23
Filing Date
2024-05-02
Publication Date
2025-09-24

AI Technical Summary

Technical Problem

The complexity at the Radio Access Network (RAN) increases when both packets marked with PDU-set information and unmarked packets are sent via a QoS flow, as the RAN needs to accommodate scheduling resources for PDUs of a PDU-set according to the PDU set delay budget and non-marked PDU-set packets based on legacy PDB, where the PDU set delay budget is higher than the legacy PDB.

Method used

Enforcing a policy that a QoS Flow enabled with PDU Set marking must have all PDUs in the downlink direction marked with PDU Set information upon ingestion into the 5GS over the UPF via the N6 interface, ensuring that only packets marked with PDU Set information are sent within this flow.

Benefits of technology

This policy simplifies the RAN's resource allocation by ensuring all packets in a QoS Flow enabled with PDU Set marking contain PDU Set information, reducing complexity and maintaining a good complexity-performance trade-off.

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Abstract

A User Plane Function (UPF) receives a Protocol Data Unit (PDU) in a downlink direction, the received PDU subject to PDU-set processing according to configuration information received from a Session Management Function (SMF), and the configuration information includes a protocol description. The UPF determines whether the received PDU does not match all components of the configuration information, or the received PDU does match the protocol description of the configuration information, and the received PDU is not part of a PDU-set. The UPF creates a header for the received PDU, the header including PDU-set information if either the received PDU does not match all of the components of the configuration information, or the received PDU does match the protocol description of the configuration information, and the received PDU is not part of the PDU-set. The UPF routes the received PDU and the header to a radio access network.
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