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…
4G LTE: LTE RLC: RLC UM Mode
RLC UM mode is used to deliver/receive the messages from DL/UL DTCH, MCCH and MTCH. Here segmentation and reassembly of RLC SDUs will be…
4G LTE: LTE RLC: RLC TM Mode
The operation of RLC TM Mode is very simple and easy to understand. TM stands for Transparent Mode Functions performed by RLC TM mode: 1.…
4g LTE: LTE MAC CE: Timing Advance Command
What is the need of timing Advance command? UE will not be in stationary position. It will be moving far away or moving near with respect to…
4g LTE: How to calculate peak data rate in LTE?
Some may say that peak data rate for LTE is 300mbps. How did they arrive at this number? In this chapter we shall make it clear. WKT: 1 frame…
4g LTE: LTE MAC: RACH Contention based and Non-Contention based procedure.
1. Understanding contention based random access procedure. If 2 UE choose the same preamble sequence and send this sequence to eNB at the same…
4g LTE: LTE MAC: Random Access Procedure and RACH
Introduction: RACH stands for Random Access CHannel. UE will perform power on procedure for DL synchronization. UE will perform RACH procedure…