Tijdens de meetup van maart 2018 gingen we dieper in op het onderwerp LTE-M

5. KPN LoRa Advanced Workshop4

6. KPN LTE cat M
Advanced Workshop
Presentation
Niels Stamhuis
Prototyping Internet of Things
Academy

7. Outline KPN Advanced Workshop
∙ Overview of KPN LTE Cat-M
Definitions & 3GPP
∙ KPN LTE cat M Essentials:
LTE, LTE Cat-M and IoT
∙ KPN LTE Cat-M Implementation:
Features
∙ Send you first data
Devices & Code
KPN LTE cat M Advanced Workshop6

8. 2G / 3G network setup
7

9. LTE network setup
8

10. LTE connection - Bearer
9

11. 3GPP definitions
Release 13:
-Cat - NB1
-Cat - M1 (eMTC)
10
Release 14

12. Category by 3gpp
11

13. 3GPP definitions
12
3GPP releases 10, 11 and 12 - MTC (Machine Type Communications)
- Cat-M1 low performance LTE device - not particularly optimized for MTC
- Cat-NB iot is the first device targeted towards MTC
- Cat-0 devices are designed for low cost and low power consumption
3GPP release 13 - eMTC (enhanced MTC) / LTE-M / Category M or Cat-M1
- additional cost reduction
- lower bandwidths in the uplink and downlink
- lower data rates
- reduced transmit power.
Cat-M1 devices
- low cost
- enhanced coverage
- extended device battery life.

14. LTE Connectivity
13

15. LTE Cat-M enables IoT by offering Internet connectivity
with a 1Mb/s data rate and power saving sleep functions
KPN LTE cat M Advanced Workshop14
Range
Power
Efficiency
€
Future: ~€10 per hardware
module
Medium
Speed
(1 Mbit/sec)
Low Cost
Low Energy
consumption
LTE
Coverage

16. LTE cat M is a simplified version of LTE, offering low
power connectivity over an extended range
KPN LTE cat M Advanced Workshop15
• Based on existing LTE cellular coverage
• cat M Protocol has less overhead compared
traditional LTE
• Devices can join the network very fast
• LTE module can be put to sleep by network

17. How does it work?
16

18. Outline KPN Advanced Workshop
∙ Overview of KPN LTE Cat-M
Definitions & 3GPP
∙ KPN LTE Cat-M Essentials:
LTE, LTE cat M and IoT
∙ KPN LTE Cat-M Implementation:
Features
∙ Send you first data
Devices & Code
KPN LTE cat M Advanced Workshop17

19. Features
SMS functionality
(Currently active)
18
Roaming
Enhanced coverage
(repeater, power)
VoLTE (voice over LTE)
Protocol Compatible
TCP/IP - IPv4 / IPv6
FTP - UDP - TCP - HTTP - MQTT
SSL -TLS & Update over Air
Power Save Mode (by network)
eDRX - power saving

20. Power Management
- Extended discontinuous reception (eDRX)
- Module listens for queued data
19

21. Power Management
- Extended discontinuous reception (eDRX)
- Idle DRX & connected DRX
20

22. Power Management
- Power Saving Mode (PSM)
- wake on timer T3412 (Extended TAU Timer) or local interrupt
- Current consumption tipping point = 1 message / day
21

23. Cell handover handling
- PSM T3412 setting - Extended Tracking Area Update (TAU) Timer
- Paging during IDLE mode
- Reconnect if cell ID is not matching
- eDRX for moving devices
- Combining Accelerometer & PSM
22

24. Security
- Hardware security: Sim card identification
- Network security: High quality LTE standard
- Application security: SSL/TLS supported on device side
23

25. IoT Connectivity - What to do?
“It always depends: what’s your use case, and why?”
24

26. IoT Connectivity - What to do?
25

27. Wrap up LTE Cat-M
1. Low power, low costs eMTC
2. LTE stability and latency
3. Long list of features to be added (voice, roaming, power)
4. Many tunable parameters for
a. coverage
b. power management
c. scale
26

28. Outline KPN Advanced Workshop
∙ Overview of KPN LTE Cat-M
Definitions & 3GPP
∙ KPN LTE Cat-M Essentials:
LTE, LTE Cat-M and IoT
∙ KPN LTE Cat-M Implementation:
Features
∙ Send you first data
Devices & Code
KPN LTE cat M Advanced Workshop27

29. Software
Defined
Radio
Elements of an IoT Device
KPN LTE cat M Advanced Workshop28
Schematic Device
Antenna
Radio control
Sensor/
Actuator
Battery/
Power
supply
Central
Processing
Unit
ATMega 1284
STM32L151
TPH-grove
sensor
LiPo battery
Solar Panel
Arduino based
Custom PCB
Raspberry Pi

30. 29

31. Get started with sending LTE-M Data
30

32. Get Started!
- AT Command list
31