Performance Degradation of IEEE 802.11 MANET due to Heavy Increase and Heavy Decrease in Contention Window
نویسندگان
چکیده
منابع مشابه
Analysis of Unsaturation Performance of IEEE 802.11 DCF with and without Slow Contention Window Decrease
Most of analytical models proposed so far for the IEEE 802.11 distributed coordination function (DCF) focus on saturation performance. In this paper, we develop an analytic model for unsaturation performance evaluation of the IEEE 802.11 DCF with and without slow contention window decrease (SCWD). The model explicitly takes into account the carrier sensing mechanism and an additional backoff in...
متن کاملA Game Theory based Contention Window Adjustment for IEEE 802.11 under Heavy Load
The 802.11 families are considered as the most applicable standards for Wireless Local Area Networks (WLANs) where nodes make access to the wireless media using random access techniques. In such networks, each node adjusts its contention window to the minimum size irrespective to the number of competing nodes. So in the case of large number of nodes, the network performance is reduced because o...
متن کاملaccumulation of heavy metals (cu, zn, cd and pb) in sediment and selected organisms in lukut river, negrisembilan, malaysia, and toxocological studies of heavy metals (cu, zn, cd and pb) on penaeus monodon (fabricius, 1798) juveniles
چکیده ندارد.
15 صفحه اولOptimizing the IEEE 802.11b Performance using Slow Congestion Window Decrease
We investigate a new process for the decrease of the IEEE 802.11b Contention Window (CW) called CW decrease, introduced by Ni et al. We give some mathematical analysis of the model that explains the experimental results previously obtained. The analysis allows us to refine the MAC optimization and reach the optimal asymptotical saturation throughput when the number of stations increases. We als...
متن کاملEffect of Contention Window on the Performance of IEEE 802.11 WLANs
In the IEEE 802.11, an exponential backoff has been adopted, which means whenever a collision occurs, the contention window (CW) of the station is doubled until it reaches the maximum value. The purpose of increasing CW is to reduce the collision probability by distributing the traffic into a larger time space. In this paper, we use a fixed contention window (FCW) scheme and then evaluate the p...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Journal of Computer Applications
سال: 2011
ISSN: 0975-8887
DOI: 10.5120/2437-3280