Location enhancement to IEEE 802.11 DCF

T. Nadeem, Lushen Ji, A. Agrawala, J. Agre
Proceedings IEEE 24th Annual Joint Conference of the IEEE Computer and Communications Societies.  
In this paper, we propose an enhancement to the existing IEEE 802.11 DCF MAC function to improve channel spatial reuse efficiency, and thus improve data throughput. Our modification, named the Location Enhanced DCF (LED) for IEEE 802.11, incorporates location information in the RTS-CTS-Data-ACK handshakes of the IEEE 802.11 DCF so that other stations sharing the channel are able to make better interference predictions and blocking assessments. Physical layer receiver capture effect is also used
more » ... effect is also used in LED to encourage more concurrent transmissions, after the result of the improved channel estimation. In this paper we analytically study the potential performance enhancement of the LED over the original IEEE 802.11 DCF. The results are also verified using the ns-2 simulator, which show that up to 35% of DCF blocking decisions are unnecessary and our LED method can achieve up to 22% more throughput than the original DCF.
doi:10.1109/infcom.2005.1497931 dblp:conf/infocom/NadeemJAA05 fatcat:t6jdojlm4re6lkxgh7rkwiokte