A software-defined distributed underwater acoustic sensor network flow table storage and management method

Abstract

The invention discloses a method for storing and managing flow tables in a software-defined distributed underwater acoustic sensor network. Underwater acoustic distributed sensor network; software-defined underwater sensor data nodes manage network topology and assist gateway node networking and maintenance; transform the original SDN flow entry to obtain intra-domain flow entry; software-defined underwater acoustic gateway node generation The global flow table in the area, and the intra-area flow table that each software-defined underwater sensor data node needs to store is issued; the software-defined underwater acoustic gateway node updates its locally stored network topology and routing information. The invention can improve the automatic management and control ability of the network, make the original node compatibility of the distributed underwater acoustic sensor network stronger, the resource scale is easy to expand, and the networking flexibility is better.

Description

technical field [0001] The invention relates to the technical field of a distributed underwater acoustic sensor network, in particular to a method for storing and managing a flow table of a software-defined distributed underwater acoustic sensor network. Background technique [0002] Ocean communication has existed for more than half a century, but it was only in the 1990s that the progress began to accelerate. Although the underwater communication network has certain similarities with the communication network on land in some respects, there are still many independent characteristics, specifically including: large propagation delay, narrow frequency band, obvious multipath effect, environment The noise is large and the Doppler effect is obvious. [0003] In addition, the underwater communication network also has problems such as difficult node deployment and salvage, single node function, etc., which makes it impossible for the underwater communication network to provide d...

AI Technical Summary

Problems solved by technology

Although the underwater communication network has certain similarities with the communication network on land in some respects, there are still many independent characteristics, specifically including: large propagation delay, narrow frequency band range, obvious multipath effect, environmental Loud noise and obvious Doppler effect

[0003] In addition, the underwater communication network also has problems such as difficult node deployment and salvage, single node function, etc., which makes it impossible for the underwater communication network to provide differentiated services for diverse underwater applications. Under this system, the nodes in the underwater communication network need to be salvaged

[0004] The existing underwater acoustic communication network uses the classic three-layer structure model to organize the network and provide a unified protocol interface. However, with the increasingly high requirements for network communication quality and performance, some problems have also been exposed, mainly as follows: Poor node compatibility, limited automatic networking capabilities, cumbersome hot switching, etc.

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