Terminal and Core Network RQoS Control with Slice Management
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Solution Overview
Problem
In the 5G mobile communication system, there is a lack of clear definitions for controlling Reflective Quality of Service (RQoS) in a terminal apparatus-initiated manner, authentication and authorization functions by the data network, and management processes for network slices, particularly in connecting to multiple slices.
Innovation Solution
A terminal apparatus and core network device exchange information to initiate and manage RQoS, with the terminal apparatus requesting and confirming RQoS changes and receiving validation and timer information, enabling RQoS application to specific QoS flows and congestion management across network slices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If RQoS control mechanisms are defined only in network-initiated manner, then network control capability is improved, but terminal apparatus initiation capability deteriorates
Solution Approach 1:
The patent implements dynamic RQoS control by enabling both network-initiated and terminal apparatus-initiated modes. The system can switch between control initiation sources based on operational needs, with the terminal capable of requesting RQoS changes and the network capable of enforcing them, creating a flexible bidirectional control mechanism rather than a fixed unidirectional approach
Solution Approach 2:
The RQoS control mechanism is designed to serve multiple functions: it can operate in network-initiated mode for centralized control, in terminal-initiated mode for user-driven quality adjustments, and support both validation and non-validation scenarios. This multi-functional design resolves the contradiction by making the system adaptable to different operational requirements
2Adaptability or versatility
If authentication and authorization functions are summarized without detailed definitions, then implementation flexibility is improved, but implementation clarity deteriorates
Solution Approach 1:
The authentication and authorization function is segmented into distinct operational components: authentication request transmission, authentication result reception, authorization enforcement, and detailed message exchange procedures. Each component is clearly defined with specific message formats and processing steps, providing both flexibility in implementation and clarity in execution
Solution Approach 2:
The patent performs preliminary definition of authentication and authorization mechanisms by establishing clear message formats, processing procedures, and functional requirements before implementation. This preliminary structuring provides implementation templates that maintain flexibility while ensuring clarity, as implementers can follow the predefined frameworks without ambiguity
3Adaptability or versatility
If terminal apparatus connects to multiple network slices, then network service diversity is improved, but management process complexity deteriorates
Solution Approach 1:
The patent segments the management of multiple network slices by establishing independent management processes for each slice connection. The terminal apparatus handles each network slice connection separately with dedicated configuration and control procedures, avoiding the need for complex integrated management while supporting diverse network services across multiple slices
Solution Approach 2:
The patent uses copying of standardized connection management procedures for each network slice. Rather than creating unique complex management logic for each slice, the system copies and adapts a standard connection management template to each slice context, reducing overall management complexity while maintaining service diversity
Data Source
AI summary
A terminal apparatus or a device in a core network exchanges capability information for each function in a registration procedure or a packet data unit (PDU) session establishment procedure. In user data communication, additional information is added into an uplink packet to implement the terminal apparatus-initiated reflective quality of service (RQoS) control, and additional information is added into a downlink packet to implement network device-initiated RQoS control. A dedicated control message and information for the authentication and/or authorization function by a data network (DN) are defined to implement the authentication and/or authorization function by the DN. Furthermore, the terminal apparatus and the device in the core network have a timer or a control process for each network slice to implement the management process such as congestion management for each network slice.