Data Delivery Efficient Spreading Factor Allocation in Dense LoRaWAN Deployments

摘要

We consider a scenario in which a LoRaWAN with a large number of devices is located in a limited area. At the same time, the signal attenuation level will allow the use of transmission rates maximum or close to the maximum modulation rate of LoRa. For such a dense deployments, a simplified model is proposed that reflects the main features of LoRa technology, the problems of maximizing the probability of delivery are formulated and solved. Based on the solution of the optimization problem, spreading factor allocation method LoRa modulation parameters is proposed. The effectiveness of the method is verified using simulation in the NS3 environment.