Multimode heterogeneous DTN simulation verification system and method

Abstract

The invention discloses a multimode heterogeneous DTN simulation verification system and method. The distributed architecture of a control workstation and a simulation workstation is adopted, virtual DTN node attribute information and a simulation event queue are generated through a virtual DTN scene module according to a preset DTN scene, a master control module selects simulation DTN node modules on the simulation workstation to simulate virtual DTN nodes, the simulation DTN mode modules carry out module communication according to simulation events, simulation running data are generated according to simulation running conditions, and the virtual DTN scene module calculates a network performance index value according to the simulation running data of all the simulation DTN node modules in the whole simulation running process. The information interaction of the control workstation and the simulation workstation is completed through the master control module and a controlled module in the simulation running process. The performance of a simulated multimode heterogeneous DTN can be actually reflected, and simulation verification on the large-scale multimode heterogeneous DTN can be carried out.

Description

technical field [0001] The invention belongs to the technical field of computer network simulation, and more specifically relates to a multi-mode heterogeneous DTN network simulation verification system and method. Background technique [0002] Delay torrent networks (DTN) is a heterogeneous network with high mobility and intermittent communication connections. It consists of multiple DTN domains, each of which runs a different communication protocol. Through the "store-carry-forward" mechanism of the Bundle protocol, different networks are allowed to exchange information. The traditional test methods for evaluating the network performance of routing algorithms and communication protocols in DTN are basically divided into two categories: software simulation and live simulation experiment. [0003] Software simulation must simplify the modeling of the simulation prototype system to reduce computational complexity and software implementation, which will lead to a larger error...

AI Technical Summary

Problems solved by technology

The cost of live simulation experiments is relatively high and cannot be widely used

At present, the DTN live simulation experiment mainly uses the open source software DTN2, which has integrated the bundle protocol and the convergence layer protocol such as LTP / TCP / UDP, which can well support the transmission of data streams in the real physical environment, but does not support the mobile model and network conditions such as network bandwidth, packet loss, and delay, as well as multi-mode communication interfaces

At the same time, due to hardware dependence, the number of nodes in the actual measurement environment is limited, so the software can only be used as a component

[0005] From the above analysis, it can be seen that due to the limitations of the software itself or hardware dependence, the current simulation and simulation software for DTN networks have relatively single functions, which cannot well support DTN network scenarios and accurately evaluate the performance of algorithms and protocols in the network. , at the same time, there are limitations in the number of network nodes, which cannot meet the needs of large-scale multi-mode heterogeneous DTN networks

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