Abstract
This paper discusses the Channel Acquisition Slot Protocol (CASP), a new protocol for the Media Access Control (MAC) of wireless networks. The CASP is intended to provide a more efficient use of communication channels; this is achieved by mechanisms for eliminating contentions among network stations and by an implicit handling of acknowledge messages. To avoid collisions of messages, the protocol divides the time into short slots, each of which is assigned to a single station, and any station must wait its own slot to start its transmission. However once a transmission is started the slot can be extended and no other station can make use of the channel. The use of an implicit acknowledge mechanism removes the necessity of an acknowledge message exchange for every transmission. In various simulated scenarios the CASP shows a 25% better throughput efficiency compared with the one of the IEEE802.11 protocol.
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