Fair Adaptive Data Rate Allocation and Power Control in LoRaWAN

In this paper, we present results of a study of the data rate fairness among nodes within a LoRaWAN cell. Since LoRa/LoRaWAN supports various data rates, we firstly derive the fairest ratios of deploying each data rate within a cell for a fair collision probability. LoRa/LoRaWan, like other frequency modulation based radio interfaces, exhibits the capture effect in which only the stronger signal of colliding signals will be extracted. This leads to unfairness, where far nodes or nodes experiencing higher attenuation are less likely to see their packets received correctly. Therefore, we secondly develop a transmission power control algorithm to balance the received signal powers from all nodes regardless of their distances from the gateway for a fair data extraction. Simulations show that our approach achieves higher fairness in data rate than the state-of-art in almost all network configurations.

[1]  Raj Jain,et al.  A Quantitative Measure Of Fairness And Discrimination For Resource Allocation In Shared Computer Systems , 1998, ArXiv.

[2]  Davide Magrin,et al.  Performance evaluation of LoRa networks in a smart city scenario , 2017, 2017 IEEE International Conference on Communications (ICC).

[3]  Axel Sikora,et al.  Free space range measurements with Semtech Lora™ technology , 2014, 2014 2nd International Symposium on Wireless Systems within the Conferences on Intelligent Data Acquisition and Advanced Computing Systems.

[4]  Susana Sargento,et al.  Long range communications in urban and rural environments , 2017, 2017 IEEE Symposium on Computers and Communications (ISCC).

[5]  Utz Roedig,et al.  Do LoRa Low-Power Wide-Area Networks Scale? , 2016, MSWiM.

[6]  Dirk Pesch,et al.  LSCHC: Layered Static Context Header Compression for LPWANs , 2017, CHANTS@MOBICOM.

[7]  Orestis Georgiou,et al.  Low Power Wide Area Network Analysis: Can LoRa Scale? , 2016, IEEE Wireless Communications Letters.

[8]  Mahesh Sooriyabandara,et al.  Low Power Wide Area Networks: An Overview , 2016, IEEE Communications Surveys & Tutorials.

[9]  Konstantin Mikhaylov,et al.  Performance of a low-power wide-area network based on LoRa technology: Doppler robustness, scalability, and coverage , 2017, Int. J. Distributed Sens. Networks.

[10]  Utz Roedig,et al.  LoRa Transmission Parameter Selection , 2017, 2017 13th International Conference on Distributed Computing in Sensor Systems (DCOSS).

[11]  A. Subramanian,et al.  Joint rate and power control algorithms for wireless networks , 2005, IEEE Transactions on Signal Processing.

[12]  Konstantin Mikhaylov,et al.  On LoRaWAN scalability: Empirical evaluation of susceptibility to inter-network interference , 2017, 2017 European Conference on Networks and Communications (EuCNC).

[13]  Sofie Pollin,et al.  Power and spreading factor control in low power wide area networks , 2017, 2017 IEEE International Conference on Communications (ICC).

[14]  Dirk Pesch,et al.  A Fair Adaptive Data Rate Algorithm for LoRaWAN , 2018, EWSN.

[15]  Ilenia Tinnirello,et al.  Impact of Spreading Factor Imperfect Orthogonality in LoRa Communications , 2017, TIWDC.

[16]  Axel Sikora,et al.  IPv6 over LoRaWAN™ , 2016, 2016 3rd International Symposium on Wireless Systems within the Conferences on Intelligent Data Acquisition and Advanced Computing Systems (IDAACS-SWS).

[17]  Francesca Cuomo,et al.  EXPLoRa: Extending the performance of LoRa by suitable spreading factor allocations , 2017, 2017 IEEE 13th International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob).

[18]  Claire Goursaud,et al.  Dedicated networks for IoT : PHY / MAC state of the art and challenges , 2015, IOT 2015.

[19]  Roy D. Yates,et al.  A Framework for Uplink Power Control in Cellular Radio Systems , 1995, IEEE J. Sel. Areas Commun..

[20]  Dmitry Bankov,et al.  Mathematical model of LoRaWAN channel access , 2017, 2017 IEEE 18th International Symposium on A World of Wireless, Mobile and Multimedia Networks (WoWMoM).

[21]  Thomas Watteyne,et al.  Understanding the Limits of LoRaWAN , 2016, IEEE Communications Magazine.