LoRa WAN

LoRaWAN

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LoRa is a patented (EP2763321 from 2013 and US7791415 from 2008) wireless data communication technology developed by Cycleo (Grenoble, France) and acquired by Semtech in 2012.[1] LoRa uses license-free sub-gigahertz radio frequency bands like 169 MHz, 433 MHz, 868 MHz (Europe) and 915 MHz (North America). LoRa enables very-long-range transmissions (more than 10 km in rural areas) with low power consumption.[2] The technology is presented in two parts: LoRa, the PHY layer and LoRaWAN, the upper layers.

LoRa PHY[edit]

The LoRa physical layer protocol is closed and proprietary, therefore there is no official documentation. However several people have analyzed it and documented their findings[3].

LoRaWAN[edit]

LoRaWAN is a media access control layer protocol for managing communication between LPWAN gateways and end-node devices, maintained by the LoRa Alliance. Version 1.0 of the LoRaWAN specification was released in June 2015.[4]

LoRaWAN defines the communication protocol and system architecture for the network, while the LoRa physical layer enables the long-range communication link. LoRaWAN is also responsible managing the communication frequencies, data rate, and power for all devices.[5] Devices in the network are asynchronous and transmit when they have data available to send. Data transmitted by an end-node device is received by multiple gateways, which forward the data packets to a centralized network server.[6] The network server filters duplicate packets, performs security checks, and manages the network. Data is then forwarded to application servers.[7] The technology shows high reliability for the moderate load, however, it has some performance issues related to sending acknowledgements.[8]

Platforms based on LoRaWAN[edit]

Platforms based on LoRaWAN include:

  • Globalsat, both a public LoRaWAN and private LoRa Nodes solution provider for WW, include Europe, US, Asia region and Japan market.[9]
  • ThingsConnected, a free platform provided by the UK Digital Catapult[10]
  • iFrogLab, public LoRaWAN and LoRa provider for North America and Taiwan.[11]
  • IoT-X, platform from Stream Technologies for public and private networks.[12]
  • ResIOT.io, platform for private, public networks and IoT projects.[13]
  • OpenChirp, open management layer on top of LoRaWAN, developed at Carnegie Mellon University, for data context, storage, visualization, and access control.[14] The primary objective is to simplify the experience of adding and operating new devices in the network, as well as improving performance for communities that share bandwidth and locality.[15][16]
  • The Things Network, a free and open-source LoRaWAN network provider developed and supported by a worldwide community.[17]
  • Everynet, provides a platform and gateways for Lora use in the Americas, Europe, China.
  • Actility offers ThingPark Wireless, a network management platform for public LoRaWAN deployments and ThingPark Enterprise, for dedicated and private networks.[18]
  • Senet, public LoRaWAN provider in North America.[19]
  • LORIOT.io, global public LoRaWAN operator and platform for private and public networks.[20]
  • The LPWAN ecosystem comprises analytics vendors, such as Semtech Corporation (U.S.), LORIOT (Switzerland), NWave Technologies (U.K.), SIGFOX (France), WAVIoT (Texas, U.S.), Actility (France), Ingenu (San Diego, U.S.), Link Labs (Maryland, U.S.), Weightless SIG, and Senet, Inc. (Portsmouth, U.K.), ResIOT and UNIDATA [21](Italy) and various others such as service providers and enterprises. Other stakeholders of the Low Power Wide Area Network market include telecom operators such as Vodafone (U.K.) and Orange (France), among others who integrate these smart devices and sell them to end users to cater to their unique business requirements.

References[edit]

  1. ^ "LoRa, LoRaWAN and LORIOT.io". LORIOT. Retrieved 2017-05-05. 
  2. ^ Ramon Sanchez-Iborra; Jesus Sanchez-Gomez; Juan Ballesta-Viñas; Maria-Dolores Cano; Antonio F. Skarmeta (2018). "Performance Evaluation of LoRa Considering Scenario Conditions". Sensors. 
  3. ^ Matthew Knight; Balint Seeber (2016). "Deconding LoRa: Realizing a Modern LPWAN with SDR". 
  4. ^ Version 1.0 of the LoRaWAN specification released.
  5. ^ "LoRaWAN For Developers". www.lora-alliance.org. Retrieved 2017-06-22. 
  6. ^ "A Comprehensive Look At LPWAN For IoT Engineers & Decision Makers". www.link-labs.com. Retrieved 2017-06-22. 
  7. ^ LoRa Alliance (2015). "LoRaWAN: What is it?" (PDF). 
  8. ^ Bankov, D.; Khorov, E.; Lyakhov, A. (November 2016). "On the Limits of LoRaWAN Channel Access". 2016 International Conference on Engineering and Telecommunication (EnT): 10–14. doi:10.1109/ent.2016.011. 
  9. ^ www.globalsat.com.tw. "IoT/M2M". www.globalsat.com.tw. 
  10. ^ "Things Connected". Retrieved 2017-07-19. 
  11. ^ "iFROG LAB". iFROG LAB. 
  12. ^ Technologies, Stream. "Stream Technologies - Low Power Wide Area Networks - LoRa". www.stream-technologies.com. Retrieved 2017-05-17. 
  13. ^ "ResIOT.io". Retrieved 2017-08-24. 
  14. ^ "OpenChirp". OpenChirp. 2017. 
  15. ^ Dongare, A.; Hesling, C.; Bhatia, K.; Balanuta, A.; Pereira, R. L.; Iannucci, B.; Rowe, A. (March 2017). "OpenChirp: A Low-Power Wide-Area Networking architecture". 2017 IEEE International Conference on Pervasive Computing and Communications Workshops (PerCom Workshops): 569–574. doi:10.1109/percomw.2017.7917625. 
  16. ^ Gund, Devin (2017). "LPWAN Policy Research". 
  17. ^ Network, The Things. "The Things Network". The Things Network. Retrieved 2017-05-24. 
  18. ^ "ThingPark Wireless | Thingpark". www.thingpark.com. Retrieved 2016-02-01. 
  19. ^ "Senet - Internet of Things Network for IoT Devices". www.senetco.com. 
  20. ^ "LORIOT.io". Retrieved 2017-07-24. 
  21. ^ "The LoRaWAN network of Unidata for the Internet of Things-". 

Further reading[edit]

  • Lee, Chang-Jae, Ki-Seon Ryu, and Beum-Joon Kim. "Periodic ranging in a wireless access system for mobile station in sleep mode." U.S. Patent No. 7,194,288. 20 March 2007.
  • Quigley, Thomas J., and Ted Rabenko. "Latency reduction in a communications system." U.S. Patent No. 7,930,000. 19 April 2011.
  • Bankov, D.; Khorov, E.; Lyakhov, A. "On the Limits of LoRaWAN Channel Access". 2016 International Conference on Engineering and Telecommunication (EnT): 10–14.