期刊名称：International Journal of Computer Science and Information Technologies
电子版ISSN：0975-9646
出版年度：2015
卷号：6
期号：2
页码：1841-1847
出版社：TechScience Publications
摘要：The scalability of Internet is leading several problems in delivering the packets from the sender to the receiver. To address these problems, advanced methodologies are to be devised for routing. Increasing the performance of the router/switching nodes and effective utilization of the network resource can also reduces the problem and increases the network performance. In this paper, a three stage communication network model with homogeneous batch arrivals and dynamic bandwidth is developed and analyzed. The data packets after getting transmitted from the first node are forwarded to the second buffer connected to the second node and the packets leaving the second node are forwarded to the third node. Dynamic Bandwidth Allocation (DBA) is the strategy that the transmission rate at each node is adjusted depending upon the content of the buffer at every packet transmission. It is assumed that the arrival of packets follow compound Poisson processes and the transmission completions at each node follow Poisson processes. This model is more accurately fit into the realistic situation of the communication network having a predecessor and successor nodes for the middle node. Using the difference – differential equations, the joint probability generating function of the number of packets in each buffer is derived. The performance measures like, the probability of emptiness of the three buffers, the mean content in each buffer, mean delays in buffers, throughput etc. are derived explicitly under steady state conditions.
关键词：Three stage communication networks; Dynamic;bandwidth allocation; Batch arrivals; Steady state and;Performance analysis
