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Specification and analysis of the DCF and PCF protocols in the 802.11 standard using systems of communicating machines

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3 Author(s)
Youssef, M. ; Dept. of Comput. Sci., Maryland Univ., College Park, MD, USA ; Vasan, A. ; Miller, R.E.

We propose and analyze formal models for coordination functions of the 802.11 MAC layer using systems of communicating machines. We model the basic DCF (CSMA/CA) protocol, the DCF (distributed coordination function) protocol with RTS/CTS (MACA), and the PCF (point coordination function) protocol. Analyses show the following safety results: the CSMA/CA protocol is free from deadlocks and non-executable transitions; the MACA has a potential livelock, but is free from deadlocks and non-executable transitions; the PCF protocol is free from deadlocks and non-executable transitions. We also show that liveness is guaranteed in the PCF protocol.

Published in:

Network Protocols, 2002. Proceedings. 10th IEEE International Conference on

Date of Conference:

12-15 Nov. 2002