5G Tutorial: Identifiers in 5G
In this chapter we shall have a look at different identifiers in 5G. These identifiers will help us to identify the UE and the type of…
5G Tutorial: 5g Terminology
1. eNB and gNB. eNB: 1. eNB is the LTE access network. 2. eNB should atleast need to be 3GPP Release 15 or above to connect to a 5G network 3.…
S1 based inter eNB handover
In the previous chapter we saw X2 based inter eNB HO. In this chapter we shall learn S1 based HO. Scenarios where we need S1 HO. 1. If X2…
X2 based Handover
As we discussed in previous chapter, handover is based on 3 steps as below: 1. HO Preparation 2. HO Execution 3. HO Completion 1. HO…
LTE Handover Events, Measurement Reports
In this chapter we shall learn about 1. RSRP and RSRQ 2. Handover events 3. Introduction to handover. RSRP: Reference Signal Receive Power. It…
SIP Request and Response Headers
Types of SIP Request INVITE : We will send INVITE request to invite a user to a call. ACK : Acknowledgment (ACK) message is sent in response…
SIP Registration and Invite Call flow
In this chapter we shall see SIP Registration and SIP Invite call flow. SIP REGISTRATION Call flow: User1 SIP Server | | | REGISTER M1 |…
VoLTE IMS KPI
KPI stands for Key Performance Indicators. Based on KPI values we can access the performance of a network. KPI’s are based on…
VoLTE INVITE Call flow
In this chapter we shall look at VoLTE IMS Invite Call Flow. Below image shows in brief of INVITE request if both UE are in same IMS Network…
VoLTE IMS registration call flow
Basic Registration call flow is as shown in image below: Below image shows the sequence of steps followed for Registration process: First step…