Distributed semi-physical simulation system based on NS3

Abstract

The invention discloses a distributed semi-physical simulation system based on NS3, which is applied to the field of network simulation and aims to solve the problem that distributed simulation and node communication with a real network cannot be realized by the existing NS3 simulation. According to the invention, simulation nodes are dispersed in a distributed host to operate, and when communication between the simulation nodes is on one host, normal processing is carried out according to a used network protocol; when communication between the simulation nodes needs to be carried out on different hosts, a distributed coordinator is used for carrying out, and it is guaranteed that a network protocol can work normally; when communication occurs on the simulation nodes and the physical nodes, data needing to be sent are directly sent to a network card of the physical host through a semi-physical interface installed on the simulation nodes; therefore, the communication is carried out on the simulation nodes and the physical nodes through a real network card of the physical host and the physical nodes.

Description

technical field [0001] The invention belongs to the field of network simulation, in particular to a distributed semi-physical simulation technology. Background technique [0002] NS3 (NetworkSimulatorVersion-3) is a network simulator that combines the characteristics of many excellent simulators. NS3 is free and open source, and has unique characteristics in terms of completeness and scalability. NS3 is rich in functions, integrates dozens of modules, and has good support for various network communication models and network protocols. It also provides developers with rich interfaces and base classes. Developers can develop independent modules according to research needs. , has good scalability. At present, the open source community of NS3 is also one of the more active communities. Use NS3 to simulate the network protocol of a small network. NS3 generally uses serial simulation, which is usually no problem for simple network topologies. For large-scale network simulation, ...

AI Technical Summary

Problems solved by technology

Use NS3 to simulate the network protocol of a small network. NS3 generally uses serial simulation, which is usually no problem for simple network topologies. For large-scale network simulation, the official mpi interface is provided for distributed simulation. , for the need to communicate with nodes in the real network, the official provides a semi-physical interface to meet such scenarios, but if you want to perform distributed simulation and communicate with nodes in the real network at the same time, NS3 itself does not provide such a interface, and at the same time, it is impossible to directly combine mpi and half-physical interface

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