Wireless ad hoc network performance evaluation method and device

Abstract

The invention discloses a wireless ad hoc network performance evaluation method and device. The method comprises the following steps: generating service excitation data and radio frequency environment excitation data according to a simulation scene; parallel multi-channel electric wave transmission simulation channels are constructed, and communication links and a network topology structure between nodes of the wireless ad hoc network to be tested are simulated; the radio frequency environment excitation data is driven by time, channel simulation parameters in the radio wave transmission simulation channel are updated in real time, and the dynamic characteristics of the wireless ad hoc network to be tested are simulated; and under the driving of time, the service excitation data loads specified services to corresponding nodes in the wireless ad hoc network to be tested in real time, generates standard IP flow and UDP flow, injects the standard IP flow and UDP flow into radio wave transmission simulation channels among the nodes of the wireless ad hoc network to be tested, and transmits the IP flow and the UDP flow through the radio wave transmission simulation channels. And recording statistical data generated in the transmission process, evaluating the performance of the to-be-tested self-organizing network, and outputting a performance evaluation result. The dynamic performance of the network can be tested and evaluated.

Description

technical field [0001] The invention belongs to the technical field of network testing, and in particular relates to a wireless self-organizing network performance evaluation method and device. Background technique [0002] The performance evaluation of wireless ad hoc networks is an important means to improve the transmission performance and routing algorithms of ad hoc networks. Due to the complexity of wireless channels and routing protocols in wireless ad hoc networks, the main method of current wireless ad hoc network performance evaluation is to use channel Combination of simulator and RF switching matrix, controllable attenuator, etc. Simulate typical channel propagation characteristics through a channel simulator, test the point-to-point wireless transmission performance of an ad hoc network, control the topology change of an ad hoc network by simulating a radio frequency matrix and a controllable attenuator, and construct and evaluate the routing protocol performanc...

AI Technical Summary

Problems solved by technology

[0003] The current solution evaluates link performance and networking performance separately. The radio frequency switch matrix simulates network link on-off through radio frequency switches, which cannot truly reflect the impact of dynamic network topology on transmission links under complex conditions.

At the same time, the impact of transmission link changes on the network topology is simply modeled as link on-off and controllable attenuation. The controllable attenuator can only simulate the size of the received signal, and cannot simulate the communication failure caused by the internal communication conflict of the wireless ad hoc network. , cannot truly reflect the actual channel conditions of wireless ad hoc networks, nor can it truly reflect the dynamic relationship between network topology and link propagation. The current evaluation methods cannot accurately evaluate the dynamic performance of ad hoc networks

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