ADU-Based QoS Flow Management in Core Network
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Solution Overview
Problem
Current wireless communication networks, particularly 3GPP systems, rely on protocol data unit (PDU)-based quality of service (QoS) frameworks, which may not efficiently handle application data units (ADUs) or ADUs and PDUs in QoS frameworks.
Innovation Solution
The implementation of a core network entity that establishes sessions with ADU detection rules and handling rules, determining ADU awareness for quality of service (QoS) flows, and supporting ADU-based QoS policies and rules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If PDU-based QoS framework is used, then network compatibility and standardization are maintained, but application-level QoS differentiation and efficiency are insufficient
Solution Approach 1:
The patent segments the QoS framework into two distinct layers: PDU-level QoS handling (maintaining existing network operations) and ADU-level QoS handling (enabling application-specific differentiation). This segmentation allows the system to maintain compatibility with existing PDU-based frameworks while introducing ADU-based differentiation through separate detection rules, handling rules, and QoS parameters specific to application data units.
Solution Approach 2:
The patent introduces a new dimension to the QoS framework by adding ADU-level QoS parameters (such as ADU error rate, ADU delay budget, maximum ADU size) alongside the traditional PDU-level parameters. This dimensional expansion enables application-level QoS differentiation without disrupting the existing PDU-based QoS structure, allowing simultaneous operation of both QoS mechanisms.
2Productivity
If ADU-based QoS framework is implemented, then application data unit management is improved, but detection and handling complexity increases
Solution Approach 1:
The patent implements preliminary action by establishing ADU detection rules and handling rules during session setup before actual ADU traffic flows. The core network entity pre-configures parameters such as maximum ADU size, ADU error rate thresholds, and ADU delay budgets, and prepares detection mechanisms in advance. This preliminary configuration enables efficient real-time ADU detection and management without adding significant complexity during active data transmission.
3Measurement precision
If session establishment with ADU detection rules is performed, then ADU awareness for QoS flows is determined, but signaling overhead and negotiation complexity increase
Solution Approach 1:
The patent implements multi-functionality by designing the session establishment procedure to simultaneously achieve multiple objectives: traditional PDU-based QoS configuration, ADU detection rule establishment, handling rule configuration, and ADU awareness determination. The session management messages are extended to carry multiple types of QoS parameters and rules in a unified signaling structure, reducing the need for separate dedicated signaling procedures for each function.
Data Source
AI summary
Aspects relate to core network entities that: establish a session including at least one of: application data unit (ADU) detection rules, or ADU handling rules related to a detection of ADUs in a user plane, and determine, for one or more quality of service (QOS) flows, whether ADU awareness applies based on an application of the ADU detection rules, or the ADU handling rules; and transmit a request to create a session that supports ADU-based QoS flows, negotiate at least one of: ADU-based QoS policies, or ADU QoS rules applicable to the session, and receive an acknowledgment of creation of the session in response to completing the negotiating. A radio access network entity conveys, during a session, one or more ADUs to a user equipment via a user plane in compliance with ADU-based QoS policies associated with at least one ADU aware QoS flow.