Gateway selection algorithm for LoRaWAN networks

The main objective of this internship is to propose a new gateway selection algorithm for downlink communication. For each downlink that has to be sent, the network server has to choose (1) the gateway that will forward the packet to the end device, and (2) the time at which to send it. There is a multitude of factors that the network server can take into account when choosing the gateway: the received signal strength indicator (RSSI) and the signal to noise ratio (SNR) of the received uplink packet, remaining duty cycle of the gateway, number of end-devices that have to be served by the gateway, downlink latency, etc. Having to choose between two different receive windows adds more complexity to the gateway selection algorithm and has a direct impact on the energy consumption of the end devices and on the gateway’s duty cycle.

Bibliography:

[1] M. Capuzzo, D. Magrin, A. Zanella, “Confirmed traffic in LoRaWAN: pitfalls and countermeasures”, Annual Mediterranean Ad Hoc Networking Workshop (Med-Hoc-Net), Capri, Italy, 2018.

[2] K. Mikhaylov, J. Petäjäjärvi, A. Pouttu, “Effect of downlink traffic on performance of LoRaWAN LPWA networks: empirical study”, IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), Bologna, Italy, 2018.

[3] ChirpStack, open-source LoRaWAN® Network Server stack, https://www.chirpstack.io last accessed April 24, 2020.

[4] V. Di Vincenzo, M. Heusse, B. Tourancheau, “Improving downlink scalabilityin LoRaWAN”, IEEE International Conference on Communications (ICC), Shanghai, China, 2019.

[5] S. Abboud, N. El Rachkidy, A. Guitton, H. Safa, “Gateway selection for downlink communication in LoRaWAN”, IEEE Wireless Communications and Networking Conference (WCNC), Morocco, 2019.