feat: add 5G-QoS blog #135
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ianchen0119
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Jun 17, 2024
docs/blog/20240612/20240612.md
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| ### Control Plane | ||
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| Central to the control plane are the Access and Mobility Management Function (AMF) and the Authentication Server Function (AUSF). The AMF oversees device connectivity and mobility within the network, initiating UE registration and coordinating with the AUSF to authenticate devices via SIM card verification. This interaction ensures that all devices have valid subscriptions and are properly managed within the network. |
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The Control Plane indicates all of the network functions except for UPF.
This part of the description can not let readers understand how it works (e.g. handling the UE registration needs other NFs to get involved).
Moreover, You should focus on explaining How NFs achieve the QoS in the 5G system.
ianchen0119
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Jun 17, 2024
docs/blog/20240612/20240612.md
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| ## Establishment and Management of QoS Flows | ||
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| 5G networks enhance connectivity through precise Quality of Service (QoS) management facilitated by the Protocol Data Unit (PDU) Session Establishment process and QoS Flow control. These processes ensure optimal performance and flexibility tailored to specific network requirements. |
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What exactly is QoS Flow control in the description?
Is it defined in the 3GPP specifications?
ianchen0119
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Jun 17, 2024
docs/blog/20240612/20240612.md
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| #### Role of PDRs in Enforcing QoS Rules | ||
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| PDRs are critical for maintaining the integrity and efficiency of network traffic management. They act as filters that identify and sort incoming data packets based on predefined criteria set according to the QoS requirements. Each PDR is associated with a specific QoS flow and contains instructions on how the UPF should handle these packets. This process is crucial for ensuring that different data flows receive the appropriate level of service quality, particularly in terms of speed, reliability, and priority. |
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Please describe how UPF will match data flow, and also explain how UPF applies the QoS rule.
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Got it. I'll try to correct them according to the comments. I appreciate these feedbacks. |
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remember to add entry at the blog index |
andy89923
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Jun 18, 2024
docs/blog/20240612/20240612.md
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| >[!NOTE] | ||
| > Author: TingYuan Chou | ||
| > Date: 2024/06/12 |
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2024/06/19
align to the actual release date
docs/blog/20240612/20240612.md
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| ## Introduction | ||
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| Quality of Service refers to the performance characteristics of a network orservice experienced by its users. In the context of 5G, QoS encompasses arange of factors, including reliability, availability, latency throughput, andprioritization of traffic. These aspects play a vital role in delivering anoptimal user experience and catering to diverse application requirements. |
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| ### User Plane | ||
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| Focused on data handling, the User Plane Function (UPF) plays a crucial role in routing data, enforcing QoS, and managing Protocol Data Unit (PDU) flows. The UPF interfaces with the network through several points: |
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Protocol Data Unit (PDU) flows?
docs/blog/20240612/20240612.md
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| - **Service Differentiation**: QoS flows enable service differentiation, allowing network operators to offer various service levels at different pricing tiers. This flexibility benefits both providers and consumers by catering to diverse needs and budgets. | ||
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| ### QoS Flow IDs (QFI) |
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| #### Providing QoS Profiles to the RAN | ||
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| The Session Management Function (SMF) plays a pivotal role in the 5G architecture, particularly in managing and distributing Quality of Service (QoS) profiles. These profiles are essential for defining the service quality parameters that will be applied to the data flows within the network. The SMF has the capability to provide these QoS profiles directly to the Radio Access Network (RAN) or preconfigure them within the RAN. This flexibility allows the network to adapt dynamically to varying service requirements and to ensure optimal resource allocation and service quality. |
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How to provide the information to RAN? (Check spec and add comments)
ianchen0119
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Jun 25, 2024
docs/blog/20240612/20240612.md
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| - **Authentication and Registration:** Upon receiving the request, the AMF performs a secure authentication process to ensure only authorized users access the network. This includes verifying the identity of the user and their subscription. | ||
| - **Session Establishment:** After successful authentication, the AMF initiates a session establishment process with the SMF to ensure the session setup meets the QoS requirements stated by the UE. | ||
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| 3. **Policy Application via PCF** |
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