Routing protocol applicable to central type underwater acoustic multi-hop network

Abstract

The invention relates to a routing protocol applicable to a central type underwater acoustic multi-hop network. The protocol broadcasts a route broadcasting vector via a Sink node so that other nodes in the network establish and maintain the routes to the Sink node, and the routing protocol comprises the following steps: the Sink node periodically broadcasts a route vector message to the fixed nodes and the moving nodes, and the fixed nodes and the moving nodes receiving the route vector message update and maintain the multi-hop routes to the Sink node according to the route vector message; when one fixed node or one moving node transmits data, the multi-hop route stored on the node is directly utilized to transmit; and if the moving node transmitting data does not store the route to the Sink node, the moving node adopts an AODV (Ac hoc On-demand Distance Vector Routing) reconstruction policy to search the route to the Sink node, wherein the route vector message comprises the ID of the Sink node, the broadcasting ID of the Sink node and the route length of the Sink node, and the fixed node and the moving node are common nodes.

Description

technical field [0001] The invention belongs to the field of underwater acoustic networks, and in particular relates to a routing protocol suitable for multi-hop networks of central underwater acoustic networks. Background technique [0002] Hydroacoustic networks have broad application prospects in ocean surveying, resource exploration, disaster forecasting, and military affairs. Since the propagation loss of underwater acoustics increases with the distance, the underwater acoustic network generally adopts multi-node relay for transmission, so the choice of routing protocol is very important. [0003] The underwater acoustic network belongs to the wireless communication network, and the routing protocol of the traditional computer network is not suitable for the underwater acoustic network. Due to the propagation delay and narrow bandwidth of the underwater acoustic network, the routing protocol of the terrestrial wireless network cannot achieve better working performance ...

AI Technical Summary

Problems solved by technology

Since the data communication of the central multi-hop network is generally only carried out between the Sink node and the common node, if a priori routing protocol is used, a large amount of protocol overhead is used to establish the route between common nodes, which is obviously unnecessary; If an on-demand routing protocol is used, since ordinary nodes often communicate with sink nodes, frequent routing flood searches will be caused. At the same time, except for AUV and other fast-moving nodes, most of the ordinary nodes move very slowly. Or static data collection nodes, so on-demand routing protocols are not applicable

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