Kyle Jamieson
Bret Hull
ABSTRACT
Carrier sense is a fundamental part of most wireless networking stacks in wireless local area- and sensor networks. As increasing numbers of users and more demanding applications push wireless networks to their capacity limits, the efficacy of the carrier sense mechanism becomes a key factor in determining wireless network capacity.We describe how carrier sense works, point out its limitations, and advocate an experimental approach to studying carrier sense. We describe our current testbed setup, and then present preliminary experimental results from both a 60-node sensor network deployment and a small-scale 802.11 deployment. Our preliminary results evaluate how well carrier sense works and expose its limitations.
- Chipcon Corporation. CC1000 Transceiver Datasheet. http://www.chipcon.com.Google Scholar
- Desilva, S., and Boppana, R. On the Impact of Noise Sensitivity on Performance in 802.11 Based Ad Hoc Networks. In Proc. of the IEEE International Conf. on Communication (Paris, France, June 2004).Google ScholarCross Ref
- Fuemmeler, J., Vaidya, N., and Veeravalli, V. Selecting Transmit Powers and Carrier Sense Thresholds for CSMA Protocols. Tech. rep., University of Illinois at Urbana-Champaign, October 2004.Google Scholar
- Karn, P. MACA---A New Channel Access Method for Packet Radio. In Proc. of the 9th ARRL Computer Networking Conf. (London, Ontario, 1990).Google Scholar
- Li, J., Blake, C., Couto, D. S. J. D., Lee, H. I., and Morris, R. Capacity of Ad Hoc Wireless Networks. In Proc. of the ACM MobiCom Conf. (Rome, Italy, July 2001), pp. 61--69. Google ScholarDigital Library
- Madwifi: Multiband Atheros Driver for WiFi. http://madwifi.sourceforge.net/.Google Scholar
- Polastre, J., Hill, J., and Culler, D. Versatile Low-Power Media Access for Wireless Sensor Networks. In Proc. of the ACM SenSys Conf. (Baltimore, MD, November 2004), pp. 95--107. Google ScholarDigital Library
- Wan, C.-Y., Eisenmen, S., and Campbell, A. CODA: Congestion Control in Sensor Networks. In Proc. of the ACM SenSys Conf. (Los Angeles, CA, November 2003), pp. 266--279. Google ScholarDigital Library
- Welsh, M. and Werner-Allen, G. Motelab sensor network testbed software. http://motelab.eecs.harvard.edu.Google Scholar
- Whitehouse, K., Woo, A., Jian, F., Polastre, J., and Culler, D. Exploiting The Capture Effect For Collision Detection and Recovery. In Proc. of the IEEE Em-NetS-II Workshop (May 2005). Google ScholarDigital Library
- Yang, X., and Vaidya, N. On Physical Carrier Sensing in Wireless Ad Hoc Networks. In Proc. of the IEEE INFOCOM Conf. (Miami, FL, March 2005).Google Scholar
- Zhu, J., Guo, X., Yang, L. L., and Conner, W. S. Leveraging Spatial Reuse in 802.11 Mesh Networks with Enhanced Physical Carrier Sensing. In Proc. of the IEEE Intl. Conf. on Communications (Paris, France, June 2004), vol. 7, pp. 4004--4011.Google Scholar
- Zhu, J., Guo, X., Yang, L. L., Conner, W. S., Roy, S., and Hazra, M. M. Adapting Physical Carrier Sensing to Maximize Spatial Reuse in 802.11 Mesh Networks. Wiley Journal of Wireless Communications and Mobile Computing 4, 8 (December 2004), 933--946. Google ScholarDigital Library
Index Terms
- Understanding the real-world performance of carrier sense
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In defense of wireless carrier sense
SIGCOMM '09: Proceedings of the ACM SIGCOMM 2009 conference on Data communicationCarrier sense is often used to regulate concurrency in wireless medium access control (MAC) protocols, balancing interference protection and spatial reuse. Carrier sense is known to be imperfect, and many improved techniques have been proposed. Is the ...
In defense of wireless carrier sense
SIGCOMM '09Carrier sense is often used to regulate concurrency in wireless medium access control (MAC) protocols, balancing interference protection and spatial reuse. Carrier sense is known to be imperfect, and many improved techniques have been proposed. Is the ...
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