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5G NR QoS Principles SMF requests PCF to give the SM policy for the PDU session. After that SMF will get the SM Policy Decision from PCF.…

5G QoS Parameters 1. 5QI This value is used as a reference to 5G QoS characteristics defined in clause TS 23 501 5.7.4 table. This value will…

5G NR QoS Profile A QoS flow may be either GBR or non-GBR depending on QoS profile. The QoS profile for a QoS flow is sent to RAN with below…

5G QoS is based on QoS Flows. Each QoS flow is identified by QoS Flow Identifier (QFI) with in a PDU session. There are 3 different types of…

There are 4 different types of cells in 5G NR: 1. PCell 2. PSCell 3. SCell 4. SpCell 1. PCell: -> Primary Cell -> It will come under…

Connection Management is used to establish and release the signalling connection between UE and AMF. CM mainly deals with establishing and…

Registration Management is used to register or deregister UE to the network and create a user context in the network. We know that UE needs to…

In this chapter we shall understand what is ARQ and HARQ. ARQ: ARQ stands for Automatic Repeat Request. It is used in Data Link Layer. It is…

A single Central Unit can be connected to multiple Distributed Units. CU-CP will have RRC, PDCP CU-UP will have SDAP, PDCP Distributed Units…

Above image shows overall architecture from 3GPP TS 38.300 specification. Xn interface exists between 2 base stations. Xn-U stands for Xn User…