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AFDX is a new generation network system of airborne devices. It is superior to use the simulation technology of network to research the real-time and deterministic performance in the AFDX system. For realizing the simulation of AFDX system, the simulation model of AFDX system should be built at first. Therefore, modeling has become the core issue about the simulation of AFDX system. After briefly...
The AFDX (Avionics Full DupleX Switched Ethernet) network simulation is an effective tool for AFDX network technology and performance research. Based on the established AFDX end system, switch and virtual link simulation models, the AFDX network simulation system is implemented on NS2 (Network Simulation 2) network simulation platform. The key algorithm of each simulation model is designed in detail...
Based on the previous work carried out on experimental validation of theory on fundamental bounds in communication network by J Y Le Boudec and Patrick Thiran in the context of networked control systems, steps are taken to define an algorithm enabling to automatically associate a time constraint requirement with a priority level and a weighted value. More advanced optimization algorithms are also...
This paper analyzes the factors that affect the synchronization performance in peer-to-peer precision time protocol (PTP). We first study the influence of frequency drift in the absence of jitter and compare the gravity of the master drift with that of the slave drift. Then, we study the influence of jitter under the assumption of constant frequencies and the effect of averaging. The analytic formulas...
Video-streaming can now be offered on third-generation (3G) mobile networks. Most research efforts have focused on video download. This paper presents a detailed study of challenges faced for successfully deploying applications requiring life video upload. Both subjective and objective qualities as well as the effects of mobility are analyzed on real 3G networks. Consequently, video profiles are identified...
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