## 3 Key Technology of the A2S Integrated MIoT
### Resource Allocation
#### 3.1.3 Network Coordination  
Achieving network coordination in the A2S integrated MIoT with a multitude of airborne, surface, and underwater nodes, users, and vessels poses a complex and critical challenge [112; 113; 114]. Effective network coordination not only requires the consideration of multi-layered, multi-modal communication requirements, but also adaptation to dynamically changing maritime and atmospheric environments. The following are some solutions on how to achieve network coordination.  
* First, introducing intelligent sensing and decision-making systems is a crucial step in achieving network coordination. By deploying advanced sensing technologies, including radar, sonar, and cameras, among others, across various nodes and users, the system can acquire real-time environmental information. This information can be used to perceive network status, identify node positions, and capture vessel dynamics, providing real-time input for network coordination. Intelligent decision-making systems can then utilize this information to make informed decisions, optimizing network resource allocation, path planning, and communication parameter settings to meet the diverse needs of users and nodes.  
* Second, adopting adaptive communication technology is essential. Considering the involvement of multiple communication media in the A2S integrated MIoT, including wireless communication, acoustic communication, etc., communication technology needs to be adaptable to different environments and node types. Adaptive communication technology can dynamically adjust based on network status and requirements to ensure communication reliability and efficiency. For example, when an underwater node needs to communicate with an airborne node, the system can automatically choose the appropriate communication mode and frequency to maximize communication success.
* Third, establishing cross-layer communication protocols and standards is crucial for achieving network coordination. In the A2S integrated MIoT, communication spans multiple layers, including airborne, surface, and underwater. To achieve effective network coordination, consistent communication protocols and standards need to be developed to ensure seamless information interaction and collaboration between different layers. This helps improve system interoperability, reduce communication complexity, and make the network more scalable and flexible.
* Fourth, employing advanced data management and processing techniques is necessary. Due to the involvement of a large number of nodes and users, the network generates a vast amount of data. Effective data management and processing techniques can help the system efficiently collect, store, process, and analyze these data, providing more accurate information support for network coordination. This includes the use of big data technologies, artificial intelligence algorithms, etc., to unearth potential patterns and trends in the data, providing a more scientific basis for decision-making.
* Finally, simulation and testing are essential means to achieve network coordination. Implementing network coordination in a real environment may pose risks and cost issues. Therefore, before actual deployment, verifying network coordination strategies and algorithms through simulation and testing is crucial. This can help identify potential issues, adjust system parameters, and enhance the robustness and performance of the system.  
In conclusion, achieving network coordination in the A2S integrated MIoT requires comprehensive consideration of sensing, decision-making, communication technology, protocol standards, data management, and simulation testing, among other aspects. Only through the integrated application of these approaches can the system achieve efficient, reliable, and intelligent network coordination in a complex environment.