Modeling and analysis of stochastic systems
Modeling and analysis of stochastic systems
Communication Networking: An Analytical Approach
Communication Networking: An Analytical Approach
New insights from a fixed-point analysis of single cell IEEE 802.11 WLANs
IEEE/ACM Transactions on Networking (TON)
Performance analysis of the IEEE 802.11 distributed coordination function
IEEE Journal on Selected Areas in Communications
COMSNETS'10 Proceedings of the 2nd international conference on COMmunication systems and NETworks
Proceedings of the 14th ACM international conference on Modeling, analysis and simulation of wireless and mobile systems
IEEE/ACM Transactions on Networking (TON)
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The network scenario is that of an infrastructure IEEE 802.11 WLAN with a single AP with which several stations (STAs) are associated. The AP has a finite size buffer for storing packets. In this scenario, we consider TCP-controlled upload and download file transfers between the STAs and a server on the wireline LAN (e.g., 100Mbps Ethernet) to which the AP is connected. In such a situation, it is well known that because of packet losses due to finite buffers at the AP, upload file transfers obtain larger throughputs than download transfers. We provide an analytical model for estimating the upload and download throughputs as a function of the buffer size at the AP. We provide models for the undelayed and delayed ACK cases for a TCP that performs loss recovery only by timeout, and also for TCP Reno. The models are validated in comparison with NS2 simulations.