In past few years, a wide variety of mobile computing devices has emerged, including portables, palmtops, and personal digital assistants. Providing adequate network connectivity for these devices will require a new generation of wireless LAN technology. This paper studies media access protocols for a single channel wireless LAN being developed at Xerox Corporation's Palo Alto Research Center. The paper starts with the MACA media access protocol first proposed by Karn and later refined by Biba which uses an RTS-CTS-DATA packet exchange and binary exponential back-off. Using packet-level simulations, the paper examines various performance and design issues in such protocols.
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