Traditional underwater acoustic sensor networks(UASNs)monitoring architecture based hardware lacks flexibility and controllability to meet the needs of diverse underwater monitoring tasks.An underwater software-defined monitoring network architecture based on edge computing and a multi-level collaborative underwater monitoring mechanism are proposed.The architecture deploys centralized cloud processing tasks to the edge through a master-slave controller,and provides hierarchical control of the network.The mechanism firstly conducts large-scale ocean monitoring through low-orbit remote sensing satellites,followed by small-scale monitoring,with data uploaded to the surface for analysis after in-situ processing and edge processing,and finally joint underwater monitoring.Simulation results show that the proposed monitoring architecture and monitoring mechanism can reduce the abnormal data processing time cost and network overhead,perform well in terms of end-to-end delay,network energy consumption and packet delivery rate in different scenarios,and improve the flexibility of the monitoring architecture.
维普
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