The highlight of NB-IoT evolution

1. Mobile IoT Network:Current
Status and Future Evolution
Sivasothy SHANMUGALINGAM
(sothy.e98@gmail.com)

2. IoT Network
Courtesy: https://www.cablelabs.com/tco-docsis-network-xhaul-vs-fiber-backhaul

3. Cellular Network
1. Massive IoT (mMTC)
2. Mission critical IoT (ultra reliable and low latency) (uRLLC)
3. Extreme Mobile Broadband (xMBB)

4. Massive IoT
➔ Low power
➔ Coverage
➔ Low cost devices
➔ Massive number of devices connected
.

5. Low Power WAN IoT Network
◆ Mobile Operators
● EC-GSM-IoT
.

6. NB-IoT
Development history:
Release 13 (in 2016)
Technical details:
◆ Range 15km
◆ Licensed (180 kHz)
◆ Operate in standalone, in-band, guard-band
◆ 10 year lifetime ( 200 byte data delivery per day).
◆ 50 K devices per cell
◆ Uplink latency budget (10s)

7. NB-IoT: Key Features
➔ Based on LTE, but optimised.
◆ Optimised control and data plane
● Data over control plane
➔ Extended Discontinuous Reception (eDRX) and Power Saving
Mode (PSM)
➔ IP and Non-IP data delivery

8. eDRX and PSM
Device in Active, Idle and sleeping
.
Courtesy: http://www.sharetechnote.com/html/Handbook_LTE_eDRX.html

9. eDRX and PSM
Device in Active, Idle and sleeping
.
Courtesy:https://www.electronic.nu/2016/09/18/lte-advanced-pro-the-mobile-future-of-the-internet-of-things/

10. eDRX and PSM
Device in Active, Idle and sleeping
PSM power offs radio modules and avoid re-attach
procedure(save energy)
In PSM, network can not contact devices.
Trade off: Latency vs power saving.
Applications with eDRX: object tracking, smart grid
Application with PSM: device originated traffic (smart
metering)

11. Data Transport in NB-IoT
Support IP and Non-IP Data Delivery
Support of data delivery over control and data plane
.

12. Data Transport
Courtesy:https://www.netmanias.com/en/post/blog/11154/iot-kt-lte-m-nb-iot/kt-shaping-iost-strategies-focusing-on-nb-iot

13. Data Transport in NB-IoT
➔ Non-IP data delivery (NO IP PDN Type)
◆ (control plane optimisation)Service Capability Exposure
Function (SCEF)
◆ PGW (SGi)
● User plane optimisation (big burst of data )
● Control plane optimisation (NAS/SGi)
➔ IP Data delivery (IP PDN Type)
◆ User plane optimization
◆ Control plane optimization

14. SCEF in NB-IoT
Defined in Release 13 (TS 29.122)
APIs officially released in Rel 15 (june 2018)
Goal: hiding complexity of the network by abstracting APIs.

15. SCEF in NB-IoT
Courtesy:http://definitionnetworks.com/products/3gpp-scef-primer/

16. NB-IoT Evolution
https://www.qualcomm.com/news/onq/2017/06/15/lte-iot-
starting-connect-massive-iot-today-thanks-emtc-and-nb-iot
Courtesy:https://www.qualcomm.com/media/documents/files/leading-the-lte-iot-evolution-to-connect-the-massive-internet-of-things.pdf

17. 4. Final Thoughts
➔ Technology competition
NB-IoT network compete with
LoRAWAN/LTE-M in some use cases
➔ Deployment
Early adopters
➔ What’s next?
Alignment with 5G NR