Peer-to-peer network based on underwater sound and radio mixed channel

Abstract

The invention relates to implementation method of a peer-to-peer network based on an underwater sound and radio mixed channel, which comprises a plurality of water surface nodes and a plurality of underwater nodes. Each node in the network has the same capacity in information transmission. The peer-to-peer network adopts a centralized management and related control information issue mechanism, and selects any water surface node as a central node to manage and monitor the whole network. When a system is initialized or a topological structure is changed, the central node calculates a local routing table of each node according to real-time connection conditions of the network system, and then the routing tables are sent to the corresponding nodes from the close to the distant. After each node receives a frame of data in a communication process, a forwarding path of the frame of data is judged according to address information and the local routing tables in a frame header so as to achieve peer-to-peer communication of any two nodes in the network. Management monitoring of the central node comprises variation of the network topological structure, issuing of the route forwarding tables to each nodes, underwater node connection management and operating conditions of each network node.

Description

technical field [0001] The invention relates to underwater acoustic communication and wireless network communication technology, in particular to a peer-to-peer network based on underwater acoustic and radio mixed channels. Background technique [0002] In shallow sea communication, acoustic signal propagation is more obviously affected by the sea surface of the seabed, and its propagation attenuation is much greater than that in deep sea, so the working distance of shallow sea acoustic communication is limited. Because the carrier frequency selected by high-speed underwater acoustic communication is generally high, its operating distance is roughly between a few kilometers to more than ten kilometers; low-speed underwater acoustic communication uses a lower carrier frequency or a more reliable modulation method. The working distance can generally reach tens of kilometers. [0003] Drawing on the relevant technologies of land communication networks and combining the particu...

AI Technical Summary

Problems solved by technology

In actual ocean monitoring, underwater warning or detection and other application places, a large amount of data needs to be transmitted between the arranged underwater network nodes, and some surface nodes such as surface ships also need to exchange data with underwater nodes. The structure of the network is inefficient, and sometimes it cannot even meet the requirements of transmitting large amounts of data

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