Title :
Throughput formulation and WLAN optimization in mixed data rates for IEEE 802.11 DCF mode
Author :
Ergen, Mustafa ; Varaiya, Pravin
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., California Univ., Berkeley, CA, USA
fDate :
29 Nov.-3 Dec. 2004
Abstract :
An analytical formula is derived for the throughput of IEEE 802.11 WLAN in which stations may have different data rates or SNR. The throughput is significantly reduced from the presence of even one station with low data rate. This reduction is a consequence of the DCF mode which guarantees equal packet transmission probability to all stations. The throughput can be increased if stations with low data rates transmit shorter packets. The analysis is based on a semi-Markov model and the theoretical predictions are verified by simulation.
Keywords :
Markov processes; optimisation; probability; wireless LAN; IEEE 802.11 DCF mode; WLAN optimization; distributed coordination function; mixed data rate; packet transmission probability; semiMarkov model; Analytical models; Data communication; Media Access Protocol; Multiaccess communication; Physical layer; Predictive models; Probability; Quantization; Throughput; Wireless LAN;
Conference_Titel :
Global Telecommunications Conference Workshops, 2004. GlobeCom Workshops 2004. IEEE
Print_ISBN :
0-7803-8798-8
DOI :
10.1109/GLOCOMW.2004.1417585
