Packet Drop Rate and Round Trip Time Analysis of TCP Congestion Control Algorithm in a Cloud Based Collaborative Virtual Environment

Collaborative Virtual Environment (CVE) has become popular in the last few years. In CVE the state of the virtual objects is witnessing rapid change. When a user performs an action in CVE, the information of the action needs to be transmitted to other users to maintain consistency in the cooperative work. Currently, in the design of most CVE systems, TCP is used for its reliability. When packet loss and round trip time are high during data transmission, it affects the performance of the CVE systems. This result to inconsistent state of virtual world even with the later retransmission of the lost packets. This paper implements a cloud based architecture for improving consistency and scalability in CVE systems proposed by Gital et al. (2014). We analyze and compares the drop rate and RTT of different TCP variants with CVE architecture. Our simulation results show that Vegas, New Reno and Reno can be promising TCP variants in the cloud based CVE systems compared to other variants. The Vegas, New Reno and Reno can effectively be used as an alternative to other variants of the TCP in efficient applications of the CVE.