Performance Comparison of Data-Link Control Protocol for Wireless Asynchronous Transfer Mode Network
Ganiyu A. Aderounmu, Emmanuel Rotimi Adagunodo, A. D. Akinde · International Journal of Computers and Applications · 2002
Asynchronous Transfer Mode (ATM) is a networking technology developed to meet the needs of various kinds of traffic—voice, data, video, and so on. ATM, which typically runs on fiberoptic cables, does not include error-control facilities on its payload, while the characteristics of wireless transmission make such an inclusion in wireless ATM (WATM) necessary. Thus, this article seeks to develop a suitable data-link control (DLC) protocol for WATM. The purpose is to provide a capability to dynamically support ATM-based communication in a fluctuating transmission environment by using smaller packet size (16-byte payload), selective repeat retransmission, and forward error-control, with the ability to correct up to three errors. To measure the channel throughput of the proposed DLC approach, a model was developed consisting of the following components: source, fragmentation unit, encoder, modulator, channel, demodulator, and decoder. The WATM packet header was assumed to be errorless as well as employing phase shift keying modulation. The proposed protocol has been validated using a simulation program developed based on the model above. Experimental performance results based on the simulation are presented.