Show Menu

LORaWan: Long Range Network Cheat Sheet by

long     network     low     power     range     lorawn     lora

Introd­uction LoRaWan

LoRaWAN™ is a Low Power Wide Area Network (LPWAN) specif­ication intended for wireless battery operated Things in regional, national or global network. LoRaWAN target key requir­ements of internet of things such as secure bi-dir­ect­ional commun­ica­tion, mobility and locali­zation services. This standard will provide seamless intero­per­ability among smart Things without the need of complex local instal­lations and gives back the freedom to the user, developer, businesses enabling the roll out of Internet of Things.

Commun­ication between end-de­vices & gateways

Commun­ication between end-de­vices and gateways is spread out on different frequency channels and data rates. The selection of the data rate is a trade-off between commun­ication range and message duration.

Due to the spread spectrum techno­logy, commun­ica­tions with different data rates do not interfere with each other and create a set of "­vir­tua­l" channels increasing the capacity of the gateway. LoRaWAN data rates range from 0.3 kbps to 50 kbps.

To maximize both battery life of the end-de­vices and overall network capacity, the LoRaWAN network server is managing the data rate and RF output for each end-device indivi­dually by means of an adaptive data rate (ADR) scheme.
 

Network

Different classes of end-point devices

LoRaWAN has several different classes of end-point devices to address the different needs reflected in the wide range of applic­ations:

Bi-directional end-de­vices (Class A): End-de­vices of Class A allow for bi-dir­ect­ional commun­ica­tions whereby each end-de­vice's uplink transm­ission is followed by two short downlink receive windows. The transm­ission slot scheduled by the end-device is based on its own commun­ication needs with a small variation based on a random time basis (ALOHA­-type of protocol). This Class A operation is the lowest power end-device system for applic­ations that only require downlink commun­ication from the server shortly after the end-device has sent an uplink transm­ission. Downlink commun­ica­tions from the server at any other time will have to wait until the next scheduled uplink.
Bi-directional end-de­vices with scheduled receive slots (Class B): In addition to the Class A random receive windows, Class B devices open extra receive windows at scheduled times. In order for the End-device to open its receive window at the scheduled time it receives a time synchr­onized Beacon from the gateway. This allows the server to know when the end-device is listening.
Bi-directional end-de­vices with maximal receive slots (Class C): End-de­vices of Class C have nearly contin­uously open receive windows, only closed when transm­itting. Class C

Download the LORaWan: Long Range Network Cheat Sheet

1 Page
//media.cheatography.com/storage/thumb/davidpol_lorawan-long-range-network.750.jpg

PDF (recommended)

Alternative Downloads

Share This Cheat Sheet!

 

Comments

No comments yet. Add yours below!

Add a Comment

Your Comment

Please enter your name.

    Please enter your email address

      Please enter your Comment.

          Related Cheat Sheets

          Classic Cocktails Cheat Sheet
          Network lesson Cheat Sheet

          More Cheat Sheets by Davidpol