Using commodity hardware platform to develop and evaluate CSMA protocols

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Using commodity hardware platform to develop and evaluate CSMA protocols

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International Conference on Mobile Computing and Networking archive
Proceedings of the third ACM international workshop on Wireless network testbeds, experimental evaluation and characterization table of contents

San Francisco, California, USA

SESSION: Testbed driven design and evaluation table of contents

Pages 73-80

Year of Publication: 2008

ISBN:978-1-60558-187-3

Authors

Mei-Hsuan Lu	Carnegie Mellon University, Pittsburgh, PA, USA
Peter Steenkiste	Carnegie Mellon University, Pittsburgh, PA, USA
Tsuhan Chen	Carnegie Mellon University, Pittsburgh, PA, USA

Sponsors

SIGMOBILE: ACM Special Interest Group on Mobility of Systems, Users, Data and Computing
ACM: Association for Computing Machinery

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ACM New York, NY, USA

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ABSTRACT

Developing and evaluating wireless protocols is challenging because it requires flexible network interface hardware, which is not readily available. In this paper, we present FlexMAC, a wireless protocol development and evaluation platform based on commodity hardware. FlexMAC targets CSMA wireless protocols and allows customization of functions such as backoff, retransmission, and packet timing. We describe our implementation of FlexMAC and quantify FlexMAC's precision for 802.11b compared with commercial hardware implementations. The results show that FlexMAC's performance is very close to that of hardware implementations. We also present two case studies that illustrate FlexMAC's flexibility: the use of opportunistic relaying to boost throughput and an investigation of temporal and throughput fairness. We found that FlexMAC is a useful tool for conducting 802.11-style protocol research.

REFERENCES

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