ENHANCING TCP RETRANSMISSION IN WIRELESS NETWORKS TO EASE NETWORK DELAY

Transmission Control Protocol (TCP) is the transport layer protocol that manages the majority of internet traffic; therefore, transmission control protocol efficiency is critical, since it affects internet performance. TCP's end-to-end turnout, on the other hand, degrades noticeably as used in cellular networks, since random packet errors and packet rearrangement are considered congestion. Retransmission timeouts for packets lost in transmission are unavoidable in wireless networks due to large bit error rates and fluctuating levels of congestion. The transmission control protocol misinterprets this failure as congestion and triggers congestion control by causing fast retransmission and quick recovery, resulting in network resource under-utilization. The solution to the problem that occurs when the TCP/IP protocol suite is used to provide Internet access via mobile terminals over evolving 802.11 wireless transmission control protocol links is presented in this paper. Using detailed simulations, the issue of repeated disconnections causing serial timeouts is studied and analysed, taking into account the intense movement towards wireless Intermittent connectivity by mobile terminals. Following a thorough examination of wireless communication failure recovery mechanisms and the discovery of relevant issues, a new scheme with changes at the link and transport layers is proposed.