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LTE had only 2 states i.e RRC_IDLE, RRC_CONNECTED. 5G NR has 3 states, the new state is RRC_INACTIVE state. When UE is in RRC_INACTIVE state, it will be in CM-CONNECTED state. UE can move in RNA (RAN-Based Notification Area) without notifying NG_RAN. So when there is …

In this chapter we shall have an introduction of 5G NR RRC Layer. RRC Layer is a control plane protocol stack. RRC layer is used for Access Layer Signalling AS. RRC is a L3 layer protocol.   Functions of RRC Layer -> AS and NAS related …

Reflective QoS is a new concept in 5G NR and is applicable for UpLink traffic of UE. This is applicable when SMF has not provided with QoS rules. This is achieved by UE deriving the QoS rules based on received DL traffic. It is possible to …

> WKT QFI is used to identify QoS flow. > QoS flow is the finest granularity of QoS differentiated services in a PDU session. > Multiple services can have the same QoS flow if they are having the same QoS service level. > QFI is unique …

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 have a one-to-one mapping to standard combination of 5G QoS characteristics as specified in Table 5.7.4-1. 2. ARP This …

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 QoS parameters: For both GBR and non-GBR, QoS profile shall include below parameters: – 5G QoS …

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 MCG. -> There might be many cells under MSG. -> PCell is used to initiate the initial access. …