5G NR RRC: RRC connection re-establishment procedure
UE will initiate this request to re-establish RRC COnncetion. A UE in RRC_CONNECTED with AS security has been activated with SRB2 and at-least…
5G NR RRC: RRC connection establishment procedure
This procedure is used to establish an RRC connection to the network. After this procedure SRB1 will be established. This procedure is also…
5G NR RRC Procedure: Paging
In this chapter we shall learn about RRC paging procedure. RRC paging function is used to trigger RRC Request and RRC Connection Resumption.…
5G NR RRC: 5G SRB
SRB are used to transmission of RRC and NAS messages. There are 4 different types of SRB defied in TS 38.331. 1. SRB0. 2. SRB1. 3. SRB2. 4.…
5G NR RRC: RRC Timer, Counters, Constants
RRC Timers Below are the timers available in 5G NR RRC: T300, T301, T302, T304, T311, T319, T320, T321, T325, T380, T390, T3xx Timer: T300 …
5G NR RRC: A brief discussion on RRC Inactive state
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,…
5G NR RRC: RRC Introduction and RRC States
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…
5G NR SDAP Introduction
SDAP is a new layer in 5G NR. SDAP stands for Service Data Adaption Protocol. SDAP is a user plane protocol in 5G NR. The main functions of…
5G NR Reflective QoS
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…
5G NR QoS flow mapping
> WKT QFI is used to identify QoS flow. > QoS flow is the finest granularity of QoS differentiated services in a PDU session. >…