XR QoS Flow Indication for 5G Parameter Selection
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Solution Overview
Problem
Current 5G NR systems lack clear guidelines for using Protocol Data Unit (PDU)-Set Delay Budget (PSDB) and PDU-Set Error Rate (PSER) as Quality of Service (QoS) parameters for XR services, leading to ambiguity in QoS requirements for Next Generation Radio Access Network (NG-RAN) nodes.
Innovation Solution
The core network node explicitly signals PSDB and PSER to NG-RAN nodes for XR services, overriding any existing PDB and PER configurations, ensuring clear QoS parameter usage for enhanced QoS management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If standardized 3GPP QoS parameters (PDB, PER) are used for XR services, then compatibility with existing 5G NR systems is maintained, but QoS management accuracy for XR-specific requirements deteriorates
Solution Approach 1:
The patent applies local quality by introducing XR-specific QoS parameters (PSDB, PSER) that are tailored to the specific requirements of XR services, while maintaining the use of standardized parameters (PDB, PER) for other services. This allows different parts of the QoS management system to use appropriate parameters for their specific needs, resolving the contradiction between compatibility and accuracy.
Solution Approach 2:
The patent changes the QoS parameters from standardized 3GPP parameters to XR-specific parameters (PSDB for PDU-Set Delay Budget and PSER for PDU-Set Error Rate) when handling XR services. This parameter transformation enables accurate QoS management for XR while maintaining backward compatibility through the indication mechanism.
2Measurement precision
If XR-specific QoS parameters (PSDB, PSER) are introduced, then QoS management accuracy for XR services is improved, but system complexity increases
Solution Approach 1:
The patent applies preliminary action by establishing an indication mechanism in advance that tells the network node whether to use standardized or XR-specific QoS parameters. This preparation work is done before actual QoS management, allowing the system to switch between parameter sets without adding complex real-time decision-making logic.
Solution Approach 2:
The patent introduces an indication signal as an intermediary that mediates between the standardized QoS parameter system and XR-specific requirements. This intermediary carries the necessary information to select the appropriate parameter set, avoiding the need for complex integration logic and keeping the system relatively simple.
3Reliability
If clear QoS parameter guidelines are provided for XR services, then QoS management is improved, but signaling overhead increases
Solution Approach 1:
The patent extracts the essential QoS parameter selection information into a separate indication signal. This extraction allows the core QoS management logic to remain simple while providing the necessary guidance for XR services, minimizing the additional signaling overhead by only transmitting the critical selection information.
Data Source
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AI summary
Systems and methods are disclosed for differentiating the use of different sets of Quality of Service (QoS) parameters for a QoS indicator in a wireless communication system. In one embodiment, a method comprises, at a first network node, sending, to a second network node, an indication that a first set of QoS parameters, rather than a second set of QoS parameters, is to be used for a particular QoS indicator. The method further comprises, at the second network node, receiving the indication and performing one or more actions in relation to the particular QoS indicator, in accordance with the first set of QoS parameters. In this manner, the QoS indicator can be used for different services (e.g., eXtended Reality (XR) and non-XR services) having different sets of QoS parameters.