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Reliable Image Transmission Over Lora Networks
In the past few years, thanks to the widespread accessibility of broadband network connectivity and advanced sensing technology, the Internet of Things (IoT) has become a source of diverse smart services. For instance, sensors not only offer environmental monitoring but also serve to alert the public to swiftly unfolding real-time events. The data collected from these sensors plays a crucial role in enhancing the overall quality of life for the public. As one of the wireless communication technologies that provide IoT services, LoRa has garnered considerable attention. However, in practical IoT services, there is a demand for diverse multimedia data, including images, in addition to small-sized sensor data. While LoRa is optimized for transmitting various small-scale sensor data, it has limitations when it comes to transmitting large-volume multimedia data. In this paper, we present a reliable method for transmitting image data in the LoRa network. In this scheme, the source image data is initially resized to decrease the volume of transmitted data and reduce transmission time. Additionally, the application of a retransmission scheme helps guarantee reliable data transmission. We successfully tested a new scheme in a simple LoRa network.