Distributed simulation system and method supporting large-scale complicated delay tolerant network (DTN)

Abstract

The invention relates to a distributed simulation system and simulation method supporting large-scale and complex DTN networks. Existing DTN network emulation tools can only run on a single machine, with limited computing power, small emulation ability, and small scale of emulation nodes that can be supported. The present invention builds a main controller and several emulators in the same local area network; divides the DTN network into grids, and assigns jurisdiction areas to each emulator; the main controller processes simulation events by advancing the simulation clock, Manages simulation and state synchronization for individual simulators. The present invention distributes the huge calculation requirements during DTN network simulation to different simulators, and the simulation speed is significantly improved; the basic network topology structure of one main controller and multiple simulators is adopted, and the scalability is strong; there are few requirements for the DTN network simulation scheme , the present invention can be used to realize distributed simulation only if the simulation scheme supports the linear division of the simulation network, and has strong versatility.

Description

technical field [0001] The invention belongs to the technical field of computer network simulation, and in particular relates to a distributed simulation system and simulation method supporting a large-scale complex DTN network. Background technique [0002] DTN network, instant delay tolerant network (Delay Tolerant NetWorks). In some specific network environments (such as military Ad hoc networks, sensor networks), it often occurs that the network is disconnected due to the continuous movement of nodes, resulting in the inability to ensure the end-to-end path of the message during transmission. This type of network is called It is called a delay tolerant network. [0003] At present, simulation plays an important role in the design and analysis of routing protocols in DTN networks. In the verification process of DTN network routing protocols, due to cost considerations, it is impossible to build a set of DTN networks with a certain scale in the real world, so most of th...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a distributed simulation system and simulation method that can improve the simulation speed, scalability and versatility better support large-scale complex DTN network, in order to solve the simulation capability problem of the DTN network simulation system, especially It solves the performance problem of large-scale and complex DTN network simulation with large-scale simulation nodes and complex message distribution routing protocols

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