PFD (Packet Flow Description) in 5G Network
PFD (Packet Flow Description) is responsible to define the characteristics of a certain application traffic flow in the 5G mobile network.
It includes information such as source/destination IP addresses, port numbers, and protocol types.
Various components in the 5G mobile core network, such as the Session Management Function (SMF) and the Policy Control Function (PCF), uses PFD to apply the appropriate policies and QoS treatments to the traffic flows.
The SMF retrieves the PFD information from the Policy Control Function (PCF), or from the Application Function (AF) through the Network Exposure Function (NEF) . So that the SMF can use these PFD information to configure the appropriate QoS policies and traffic handling rules in the UPF.
When a PCC rule is provided for an Application Identifier corresponding to the PFD(s), the SMF shall provide the corresponding PFD(s) to the UPF.
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What is 5G CUPS in 5G Network ?
In this post we will learn what is 5G CUPS. CUPS refers to "control plane and user plane separation". 5G CUPS means that the 5G network is separated into "control plane" and "user plane". In order to understand CUPS, first we should know that in order for the UE to be able to exchange user…
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5G Core Network Architecture
In this post, we will learn 5G Network Architecture. The control plane in 5G network includes the AMF, the SMF, the AUSF, the UDM, and the PCF. While the user plane includes the UPF. The control plane is not including those network functions only, there are another network functions in the control plane, that will be discussed later. In…
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QoS ‘Quality of Service’ in GPRS
QoS refers to 'Quality of Service'. After 'PDP context activation' procedure completes, a 'PDP context' shall exist on the MS, the SGSN, and the GGSN. In addition, the GGSN assigns a QoS for this 'PDP context'. This QoS describes the priority that the nodes shall give to traffic belonging to this 'PDP context'. The subscription…
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