LTE-M CE Mode A Vs CE Mode B | Difference between LTE-M CE Mode A and CE Mode B
This page compares LTE-M CE Mode A and CE Mode B and describes difference between LTE-M CE Mode A and CE Mode B.
Introduction:
LTE-M follows 3GPP specifications similar to LTE technology.
LTE-M stands for Long Term Evolution for Machine-Type Communications.
It is mainly developed to fulfill cellular IoT device objectives such as low device cost, deep coverage, longer battery life,
higher cell capacity and so on. There are different categories of LTE-M devices viz. Cat-0, Cat-M1 and Cat-M2 as per different
3GPP releases. LTE-M Cat-0, Cat-M1 and Cat-M2 follow 3GPP TS 36 series of rel.12, rel.13 and rel.14 respectively.
Let us understand messages exchanged between LTE-M device and base staion (i.e. eNB) during LTE-M RRC Resume Procedure.
LTE-M RRC Resume Procedure

The figure depicts LTE-M RRC Resume procedure. The messages exchanged between UE and eNB are categorized
into following four phases.
1. Synchronization phase (To acquire PSS, SS and PBCH)
2. Setup phase (Connection establishment phase)
3. Data transfer phase
4. Release phase
NB-IoT Related Stuff
LTE and LTE-M RELATED LINKS
This tutorial section on LTE basics covers following sub topics:
LTE tutorial
LTE-M tutorial
LTE features
LTE terminologies
Frame
TDD FDD
Channel types
PHY
stack
throughput
CA
cell search
network entry
Timers
PSS vs SSS
Security
LTE Bands
EARFCN
Hotspot
router
What is VoLTE
VoLTE originating call flow
VoLTE UE attach and registration procedure
Difference between LTE Advanced vs LTE Advanced Pro vs 5G Links
Article on LTE Advanced>> LTE-a vs LTE-a Pro>> 5G vs LTE Advanced Pro>>
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Difference between SC-FDMA and OFDM
Difference between SISO and MIMO
Difference between TDD and FDD
Difference between 802.11 standards viz.11-a,11-b,11-g and 11-n
OFDM vs OFDMA
CDMA vs GSM