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…
IMS Architecture
In the previous chapter we had an introduction to VoLTE architecture. In this chapter we shall see in detail about IMS Core Architecture. A…
VoLTE introduction and IMS VoLTE architecture
VoLTE Introduction 1. VoLTE stands for Voice Over LTE. 2. Until VoLTE was launched, all the calls made from LTE network used to go to Circuit…
4G LTE: LTE RLC: RLC parameters and timers
RLC Parameters in AM mode 1. POLL_SN: It will hold the value of SN of AMD for which poll bit is set. 2. PDU_WITHOUT_POLL Number of PDUs sent…
4G LTE: LTE RLC: ARQ Procedure
ARQ procedure is performed by RCL AM entity For ARQ procedure, we need to concentrate on 3 topics: 1. Retransmission 2. Polling 3. Status…
4G LTE: LTE RLC: RLC AM Mode
It will preform segmentation, reassembly, retransmission of RLC SDU. RLC Headers are added and removed. It will guarantees delivery of RLC…