Collision Detection for Carrier Sense Multiple Access in Wireless Networks
Conference: PIMRC 2005 - 16th Annual IEEE International Symposium on Personal Indoor and Mobile Radio Communications
09/11/2005 - 09/14/2005 at Berlin, Germany
Proceedings: PIMRC 2005
Pages: 5Language: englishTyp: PDF
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Authors:
Chan, Douglas S.; Berger, Toby (School of Electrical & Computer Engineering, Cornell University, Ithaca, NY 14853, USA)
Abstract:
Due to constraints inherent in RF systems, it is commonly agreed that collision detection is not feasible for CSMAbased wireless networks. However, by applying ideas from the busy-tone solution for hidden terminals and engineering together existing solutions for RF communications, we devise a simple method to reliably detect collisions for the wireless channel. We investigate the throughput gain delivered by CSMA/CD and its cross-layer designed version for multipacket-reception capable physical layers. We show that collision detection can help the system operate closer to its channel capacity. Our novel performance-improving protocols can be applied as beneficial extensions to the IEEE 802.11 wireless LAN standards.