Throughput Analysis of the IEEE 802.11 Power Save Mode in Single Hop Ad hoc Networks
نویسندگان
چکیده
In the IEEE 802.11 Power Save Mode (PSM) specified for Independent Basic Service Set (IBSS), time is divided into beacon intervals. At the beginning of each beacon interval, each station in the power save mode periodically wakes up for a duration called announcement traffic indication message (ATIM) window. The stations that have successfully transmitted ATIM frame within the ATIM window will compete to transmit data frame in the rest of the beacon interval. The transmission of an ATIM frame depends on the CSMA/CA mechanism specified in the IEEE 802.11 DCF. The probability of a successful transmission of an ATIM frame has a great impact on the performance of IBSS in power save mode. This paper presents an analytical model to calculate the throughput using the success probability of an ATIM frame transmission in ATIM window of fixed size. The simulation results validate the accuracy of this analytical analysis.
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