A new hybrid traffic generation model for Tactical Internet reliability test

Abstract

Tactical Internet (TI) is the communication infrastructure of tactical level maneuver warfare forces; its reliability directly affects the military combat. Therefore, in the TI reliability test, how to generate the appropriate network traffic and get the most accurate evaluation results should be an important part of the TI reliability test research.This paper analyzes the characteristics of applications and traffic in TI, and proposes a new hybrid traffic model which can reflect TI mission profile, to generate traffic for TI reliability test. Firstly, we research the current popular traffic generation technologies of network reliability test area, and point out their advantages and disadvantages. Secondly, according to the research result of traffic generation technologies, we propose a method for application traffic generation and combine it with background traffic generation method. Then the completed hybrid traffic model which includes application traffic generation method and background traffic method is proposed. Based on this traffic model, application traffic and background traffic are generated for TI reliability test and can get the most accurate reliability evaluation result. Finally, all the theories and models are verified by a case study. In the same case, we get the reliability test results by using hybrid traffic generation method and reliability simulation results by using OPNET, according to comparing both results, the ranges of reliability curves are same and the effectiveness of the method is proven. The profile of network reliability testThe purpose of task profile researching is supposing to 978-1-4799-6703-2/15/$31.00©2015 IEEE find a method of generating suitable traffic to carry out the network reliability test.About the task profile of network, the reliability profile usually includes work stress and environment stress [9]. For network reliability test, the work stress is performed on network traffic [15], in other words, the network traffic can reflect the users' behavior. Thus, in order to implement TI reliability test, we have to establish the reliability test profile from TI, and then break down the profile to network traffic, establish the traffic model, the last step is generating the property network traffic for network reliability test.The definition of "profile" is: a description of event, state, process function and the environment, so this kind of description is a timing description [1]. Hence, the task profile's definition in reliability area should be: A timing description of all necessary events and states that the products have to experience for completing the specify tasks. The task profile usually includes: the working status of products, maintenance program, working time and order of products, the environment time and order for products, the failure definition of the tasks. Now the current profile modeling methods of reliability test are focus on temperature, pressure and voltage of system components. But for some complex systems, it is very difficult to establish the p...

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