Modeling and analysis of stochastic systems
Modeling and analysis of stochastic systems
Dynamic tuning of the IEEE 802.11 protocol to achieve a theoretical throughput limit
IEEE/ACM Transactions on Networking (TON)
Using the 802.11e EDCF to Achieve TCP Upload Fairness over WLAN Links
WIOPT '05 Proceedings of the Third International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks
Performance modelling and measurements of TCP transfer throughput in 802.11-based WLAN
Proceedings of the 9th ACM international symposium on Modeling analysis and simulation of wireless and mobile systems
A queueing model for HTTP traffic over IEEE 802.11 WLANs
Computer Networks: The International Journal of Computer and Telecommunications Networking
ICDCN'06 Proceedings of the 8th international conference on Distributed Computing and Networking
Performance analysis of the IEEE 802.11 distributed coordination function
IEEE Journal on Selected Areas in Communications
Characterizing the exit process of a non-saturated IEEE 802.11 wireless network
Proceedings of the tenth ACM international symposium on Mobile ad hoc networking and computing
Modeling finite buffer effects on TCP traffic over an IEEE 802.11 infrastructure WLAN
Computer Networks: The International Journal of Computer and Telecommunications Networking
COMSNETS'09 Proceedings of the First international conference on COMmunication Systems And NETworks
Wireless Networking
Analytical models for energy consumption in infrastructure WLAN STAs carrying TCP traffic
COMSNETS'10 Proceedings of the 2nd international conference on COMmunication systems and NETworks
Experimental validation of analytical performance models for IEEE 802.11 networks
COMSNETS'10 Proceedings of the 2nd international conference on COMmunication systems and NETworks
Tuning the EDCA parameters in WLANs with heterogeneous traffic: A flow-level analysis
Computer Networks: The International Journal of Computer and Telecommunications Networking
Proceedings of the 14th ACM international conference on Modeling, analysis and simulation of wireless and mobile systems
A simple critical-load-based CAC scheme for IEEE 802.11 DCF networks
IEEE/ACM Transactions on Networking (TON)
IEEE/ACM Transactions on Networking (TON)
| Hi-index | 0.00 |
We provide analytical models for capacity evaluation of an infrastructure IEEE 802.11 based network carrying TCP controlled file downloads or full-duplex packet telephone calls. In each case the analytical models utilize the attempt probabilities from a well known fixed-point based saturation analysis. For TCP controlled file downloads, following Bruno et al. (In Networking '04, LNCS 2042, pp.驴626---637), we model the number of wireless stations (STAs) with ACKs as a Markov renewal process embedded at packet success instants. In our work, analysis of the evolution between the embedded instants is done by using saturation analysis to provide state dependent attempt probabilities. We show that in spite of its simplicity, our model works well, by comparing various simulated quantities, such as collision probability, with values predicted from our model. Next we consider N constant bit rate VoIP calls terminating at N STAs. We model the number of STAs that have an up-link voice packet as a Markov renewal process embedded at so called channel slot boundaries. Analysis of the evolution over a channel slot is done using saturation analysis as before. We find that again the AP is the bottleneck, and the system can support (in the sense of a bound on the probability of delay exceeding a given value) a number of calls less than that at which the arrival rate into the AP exceeds the average service rate applied to the AP. Finally, we extend the analytical model for VoIP calls to determine the call capacity of an 802.11b WLAN in a situation where VoIP calls originate from two different types of coders. We consider N 1 calls originating from Type 1 codecs and N 2 calls originating from Type 2 codecs. For G711 and G729 voice coders, we show that the analytical model again provides accurate results in comparison with simulations.