Performance Evaluation of Modified Phase Type Communication Network with Load Dependent Transmission

摘要

Recently much emphasis has been given for performance evaluation of communication networks with different transmission policies. Suresh Varma and Srinivasa Rao (2005) have developed a communication network with load dependent transmission applying tandem queuing model. However, in some places like internet communication, Broadband networks, satellite communication, computer communication etc., the transmission rate depends on the load of the connected buffer and some jobs (packets) are terminated immediately after the first transmitter, the remaining packets are to be transformed through the second transmitter i.e. the transmission of packets takes place in each of the several successive transmitters. At each transmitter the packet has an option either to leave the network or enter the subsequent buffer. This type of the transmission is called modified phase type transmission. In this paper we develop and analyze a communication network with load dependent having modified phase type transmission. The network is approximated with the Poisson processes through statistical multiplexing. The transient analysis of the network is carried out by studying the congestion in the buffer and delays in transmission. It is observed that load dependence has tremendous influence on congestion control.