Abstract
Many random access protocols have been proposed for ad-hoc networks and they are based on collision avoidance principles and are designed for low data rates (≤ 2Mbps). A key element in the design of high speed MAC protocols is the ability to send feedback from the destination to the source about the state of current transmission. We present an analysis to show that when hardware constraints like transceiver turn-around times are involved, multiplexing the feedback using a different frequency channel is a better design choice. We validate this analysis by comparing the performance of three current ad-hoc MAC protocols as the data rates are increased using a power law model for the variation of the turn-around time. We show that at high data rates, the busy tone protocols will be much more efficient than the collision avoidance protocols. Further, the results show that unless the turnaround times scale in proportion to data rate the performance of CSMA/CA protocols will be worse than slotted-ALOHA
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© 2000 Springer-Verlag Berlin Heidelberg
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Gummalla, A.C.V., Limb, J.O. (2000). Effect of Turn-Around Times on the Performance of High Speed Ad-hoc MAC Protocols. In: Pujolle, G., Perros, H., Fdida, S., Körner, U., Stavrakakis, I. (eds) Networking 2000 Broadband Communications, High Performance Networking, and Performance of Communication Networks. NETWORKING 2000. Lecture Notes in Computer Science, vol 1815. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-45551-5_43
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DOI: https://doi.org/10.1007/3-540-45551-5_43
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