Presentation Information
[BPO-1-13]Link Configuration Considering Different Spreading Factor in LoRa
〇Shu Ogasa1, Kazuhiko Kinoshita1, Alberto Ramonet1 (1. Tokushima University)
Keywords:
LoRa,Spreading Factor
There is a growing number of examples where IoT is used to streamline remote notifications and remote control, such as water infrastructure monitoring models and easy-to-install long-range wireless devices. In these examples, LoRa (Long Range)—a type of Low Power Wide Area (LPWA) technology—is used. A key feature of LoRa is that by changing the spreading factor (SF) value, the communication range and transmission speed can be adjusted in a trade-off relationship. However, communication is not possible unless the SF values used by the transmitting and receiving nodes are identical. Therefore, the transmitting node must transmit at the SF at which the receiving node is listening. Since listening at a high SF reduces transmission capacity, it is desirable to set the listening SF as low as possible while still ensuring communication with surrounding nodes.
We therefore propose a method that reduces the number of links used and lowers the listening SF by utilizing paths that pass through other nodes.
We created a simulator model and compared the standby SF before and after applying the proposed method. The results show that the average standby SF across all nodes decreased and the SF of the links used also decreased; therefore, the proposed method is considered successful.
We therefore propose a method that reduces the number of links used and lowers the listening SF by utilizing paths that pass through other nodes.
We created a simulator model and compared the standby SF before and after applying the proposed method. The results show that the average standby SF across all nodes decreased and the SF of the links used also decreased; therefore, the proposed method is considered successful.