The field of IoT communication systems is moving towards more efficient and reliable data transmission methods. Researchers are focusing on developing innovative solutions to address the challenges of long transmission distances, packet loss, and energy efficiency in IoT systems. One of the key areas of research is the improvement of link reliability in satellite-IoT systems, where blind coherent combining and backpressure-based scheduling are being explored. Additionally, the concept of Age of Information (AoI) is being studied to assess data freshness in IoT applications, with a focus on tree-based random access protocols and spatio-temporal information freshness. The use of backscatter communication technology is also being investigated, with a distributed system perspective being applied to analyze its potential. Noteworthy papers in this area include:

• B2LoRa, which proposes a blind coherent combining design to boost LoRa transmission performance in satellite-IoT systems, achieving high efficiency in real-world deployments.
• Spatio-Temporal Information Freshness for Remote Source Monitoring in IoT Systems, which presents a model of spatio-temporal information freshness, considering the conditional entropy of the system state in a remote monitoring scenario.