International Journal of Advanced Innovative Technology in Engineering (IJAITE)

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A Review on Improving the Performance of Tcp For Wireless Networks

GAURAV M. RONGHE, DR. A. P. THAKARE

Abstract :

TCP continues to be an important transport-layer communication protocol that is typically tuned to perform well in traditional wired networks, where bit error rate (BER) is low and congestion is the primary cause of packet loss. Mobile devices face temporary and unannounced loss of network connectivity when they move. They are likely to have rare resources, and they react to frequent changes in the environment. Motion causes varying, increased delays and packet losses, while the network learns how to deliver packets to the new location of the host. TCP incorrectly interprets these delays and losses as signs of network congestion and to block its transmission rate, causing degraded end-to-end performance. This paper provides an in-depth survey of various TCP enhancements which are specifically targeted for last-hop wireless environments. The objective is to review the performance issues of TCP variations, when employed in last-hop wire-less networks, and to provide a categorized analysis of different existing solutions comparatively.

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