To support downlink traffic, LoRaWAN employs two receive windows, RX1 and RX2, whereas a number of channels are assigned to each of those windows. The protocol uses a fixed Spreading Factor (SF) – a LoRa PHY modulation parameter – in RX2, while the SF of the uplink is employed in RX...
Spreading factor allocation schemesLoRaWAN is one of the most suitable communication protocols for the IoT applications that require low power over long-range communication. However, the LoRa network suffers from scalability, low data rate, and other performance issues that significantly affect the ...
Collisions in LoRaWAN networks are strongly related with spreading factor (SF) assignment of nodes which indeed effects network performance. In this work, a simulation environment to evaluate the performance of SF assignment schemes is implemented. Furthermore, a novel smart SF assignment strategy ...
Long Range (LoRa) technology is receiving increasing attention in recent years for addressing the challenges of providing wireless connections to a large number of end devices in the field of Internet of Things (IoT). This is due to its long transmission range, low power consumption, and large...
This phenomenon can result in collisions, idle slots, and inefficient energy use, hence limiting the LoRaWAN network scalability. To alleviate the aforementioned problems, this work proposes a dynamic Multi-Frame Multi-Spreading Factor (MFMSF) scheduling algorithm with slotted synchronization approach. ...
Pisani, "Explora: Extending the performance of lora by suitable spreading factor allocations," in 2017 IEEE 13th International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob), Oct 2017, pp. 1-8.Cuomo, F.; Campo, M.; Caponi, A.; Bianchi, G.; Rossini, G...
Smart Spreading Factor Assignment for LoRaWANsdoi:10.1109/iscc47284.2019.8969608Tugrul YataganSema OktugIEEEInternational Symposium on Computers and Communications
Traditional LoRaWAN solutions based on single-hop access face important drawbacks related to the presence of blind spots. This paper aims to tackle blind spots and performance issues by using a relaying approach. Many researchers investigating multi-hop solutions consider a fixed spreading fac...
An average increase of 5.5 dB was observed on the received signal strength due to a higher spreading factor. This translated into a range extension of approximately 500 m in practice. Outcome of this study provides an insight of LoRa's propagation in metropolitan environments, and facilitates the...
Spreading Factors (SF) plays a significant role in enabling multiple long-range receptions of packets with every packet assigned a different spreading factor. Therefore, a change in SF is necessary for improving the data rate for transmission where the link is better and allow LoRa networks to ...