IoT Connectivity Flashcards
lower than 1 GHz, 868 MHz in EU called ISM (Industrial, Scientific, and Medicine) band, USA 915 MHz, several techs hat use this band are Sigfox, LoRaWAN, and Weightless
LPWAN
LORAWAN
- based off lora protocol from semtech
- Spread spectrum technology
- high spreading factors provide the largest range but at the cost of lower data rates
- A synchronous
- 3 classes - class c is for continuous power and class A is batter powered
Sigfox
named for company that owns it, used in narrowband.
consists of three protocols, works on 2.4
Weightless-W - tv whitepsace
Weightless -N - narrowband protocol
Weightless P - based on tech donated by m2COMM
Weightless
can mesh, suitable for short and mid-range.
Zigbee
systems transmit the signal in a small amount of spectrum, usually less than 1 kHz, and are particularly suitable for small amounts of data.
UNB – Ultra-narrow Band
the technique in which the signal is transmitted on a bandwidth that is much
Spread spectrum
Massive Machine Type Communications to support huge number of devices in future
mMTC
URLLC
for mission critical use cases where quality of service and low latency are essential
Enhanced Mobile Broadband with higher data rates
eMBB
- essentially the 2nd gen of LTE chips built for IoT applications
- higher throughput and lower battery life than NB-IOT but the chip set is likely to cost more
LTE-M
- designed to lower the power consumption of devices and increase system capacity, spectrum efficiency, and rage.
- Synchronous
- because synchronous has worse battery life thank asynchronous protocols like Lora but lower latency and hight data through put
Narrow Band IoT
- Iot Optimized GSM network, deployed with software upgrade
- deployed via an existing 2G, 3G and 4G network
Extended Coverage
