Abstract
The rapidly increasing importance of wireless communications together with the rapid growth of high speed networks, pose new challenges to transmission control protocol (TCP). To overcome them, a wide variety of TCP enhancements has been presented in the literature with different purposes and capabilities. Cross-layering represents a perspective design principle for adapting natively wired protocols to the wireless scenario and for improving their performance. In this paper, a novel cross-layer approach (Link Layer CLAMP –TCP [L2CLAMP-TCP]) designed for performance enhancement of TCP over a large variety of wireless networks is proposed. L2CLAMP-TCP avoids TCP Acknowledgement (ACK) packet transmission over the wireless channel, thereby saving time, which can be utilized by the nodes for data packet delivery. The TCP Acknowledgement is generated at the base station itself. The congestion measure is also calculated at the base station based on which the receiver advertised window is calculated. The protocol performance is compared with existing TCP New Reno and TCP New Reno with CLAMP.
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