5G Paging Policy Differentiation via QoS Indicators
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Solution Overview
Problem
Current 5G networks lack a mechanism to provide Quality of Service (QoS) information to the Authentication Management Function (AMF) and Radio Access Network (RAN) for effective paging policy differentiation, which is essential for efficient UE paging.
Innovation Solution
The proposed solution involves delivering paging policy differentiation information between the User Plane Function (UPF)/Session Management Function (SMF) and AMF using new QoS modes, such as the QoS Flow Identifier (QFI), and providing this information to the RAN even in Radio Resource Control (RRC) inactive states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If 5G networks use the same paging policy as EPS without QoS information delivery, then device complexity is reduced, but paging efficiency and service differentiation are worsened
Solution Approach 1:
The patent introduces QoS information as an intermediary element that enables the AMF to perform paging policy differentiation. The QoS information acts as a mediator between the network's paging requests and the appropriate policy selection, allowing efficient service differentiation without requiring complex modifications to existing network functions. This resolves the contradiction by enabling improved paging efficiency through a relatively simple information delivery mechanism.
2Productivity
If QoS information is delivered to AMF for paging policy differentiation, then paging efficiency is improved, but information delivery complexity increases
Solution Approach 1:
The patent implements preliminary action by delivering QoS information to the AMF in advance of actual paging operations. This allows the AMF to have paging policy differentiation information readily available when paging is needed, eliminating the need for complex real-time information retrieval mechanisms. The QoS information is prepared and delivered beforehand through existing network interfaces, resolving the contradiction between improved paging efficiency and information delivery complexity.
3Adaptability or versatility
If paging policy differentiation is implemented without QoS information, then device complexity is reduced, but service differentiation capability is worsened
Solution Approach 1:
The patent applies parameter changes by utilizing QoS information parameters (such as QoS Flow Identifier - QFI) to enable paging policy differentiation. By changing the input parameters available to the AMF from basic paging requests to include QoS parameters, the system achieves enhanced service differentiation capability. This allows the network to differentiate between various services and users based on their QoS requirements without requiring fundamentally new network functions, thus resolving the contradiction between adaptability and complexity.
Data Source
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AI summary
According to one aspect of the present disclosure, a method of paging policy differentiation in a 5G telecommunications network is provided. A User Plane Function (UPF) receives downlink data for a target User Equipment (UE), and provides a data notification to a Session Management Function (SMF), the data notification comprising a Quality of Service (QoS) indicator, which the SMF uses to determine QoS Information (QoSI) that is sent to an Access Management Function (AMF). The AMF determines whether a paging policy selection should be performed by the AMF or by a Radio Access Node (RAN) that serves the target UE: if by the AMF, the AMF selects a paging policy based on the QoSI and sends a paging message to the RAN, which pages the UE; if by the RAN, the AMF provides paging policy information to the RAN, which selects a paging policy and pages the UE accordingly.