Transmission Control Protocol (TCP) is one of the popular transport-level protocols for distributed applications like FTP, http, telnet, email applications due to its rich set of desirable features, including a reliable, ordered, duplex byte stream, flow

Transmission Control Protocol (TCP) is one of the popular transport-level protocols for distributed applications like FTP, http, telnet, email applications due to its rich set of desirable features, including a reliable, ordered, duplex byte stream, flow control, and congestion control. The performance of TCP is affected due to various factors including the congestion window, maximum packet size; retry limit, recovery mechanism, backup mechanism and mobility. The mobility is the major factor to affect the performance of transport protocols in mobile wireless networks. Quantification of losses with varying amount of mobility in different variants of TCP is one of the performance parameter need to be considered while designing the networks. Unfortunately we could not find such information in the published literature. To quantify the effect of mobility for different variants of TCP, I have designed and implemented APN hybrid network, consisting of three segments wired, wireless and MANET particularly for remote areas. Our simulated testing of APN hybrid network is around the performance of TCP variants by using Random Waypoint Mobility model with varying mobile speeds, which shows the speed of walking person to vehicle in mountainous and deserted areas in order to analyze throughput, RTT fairness, In-order delivery of data, effect of mobility on Goodput, End-to-End delay and control overhead from mobility point of view.