Point-Multipoint Communication Scheduling in Industrial Internet: A Quick Survey

The industrial Internet represents a significant innovation merging Internet technologies, big data, artificial intelligence, and advanced manufacturing, which is characterized by high technological and commercial value. Industrial communication systems need to satisfy precision manufacturing, including the expansive connections and tight requirements such as real time, determinism, and reliability. Hence, an efficient communication scheduling mechanism is essential. In contrast to conventional separate point-to-point (P2P) scheduling, point-to-multipoint multicasting and multipoint-to-point data aggregation are proven to be more effective in alleviating network congestion, enhancing throughput, and improving efficiency in the context of the ubiquitous point-to-multipoint communication in the industrial Internet. This paper focuses on communication in intra-datacenter and inter-datacenter subject to industrial quality of service (QoS) demands. Initially, we introduce a mathematic model for network and point-to-multipoint communication requests. Subsequently, we provide a comprehensive analysis of multicast route selection and traffic rate allocation algorithms that are deadline-aware and delay-aware. Additionally, we discuss the benefits of in-network data aggregation, including insights into aggregation pathways and aggregator placement algorithms, which are valuable for reference in data transfer scheduling in the industrial Internet.