Performance Evaluation On Type V System Model For Double-Star Network Under Quasi-Saturation Conditions

In recent years, with the rapidly development of computer communication entering the big data era, the transmission requirement of high speed and large data leads to more and more high requirement of the network performance. Because the characteristics of the star network are expansible and suitable for the connection of optical fiber, it has been widely used. There are lots of reports about the star network structure, Contention-Collision Cancellation (Contention-Collision Cancellation, referred to as C-CC) is an innovative access control mode. According to the generation of data unit, request sending and the service mode, C-CC access control mode can be divided into six system models. Single network about the mathematical modeling of C-CC access mode have been finished, because of the complexity of the Multi-Star LAN’s system model, the study would be more difficult than the former, so much work remains to be completed.The C-CC type V system model in which customers arriving and requesting for service are all stochastic was discussed in this paper. Define the condition of quasi-saturation should be met:l) the number of customers in the system at the time points observed should be greater than 1; 2) there will be generated new customers in every period. We derive the customer’s detention time in system, and then discuss the effect of customer arrival rate and message length on customer’s detention time through the numerical computation, Which was provides an important basis for the theoretical research and practical application of constructed double-star network.