Insensitivity in processor-sharing networks
Performance Evaluation
The Mathematics of Internet Congestion Control (Systems and Control: Foundations and Applications)
The Mathematics of Internet Congestion Control (Systems and Control: Foundations and Applications)
On the performance characteristics of WLANs: revisited
SIGMETRICS '05 Proceedings of the 2005 ACM SIGMETRICS international conference on Measurement and modeling of computer systems
A survey on discriminatory processor sharing
Queueing Systems: Theory and Applications
New insights from a fixed-point analysis of single cell IEEE 802.11 WLANs
IEEE/ACM Transactions on Networking (TON)
Aggregation with fragment retransmission for very high-speed WLANs
IEEE/ACM Transactions on Networking (TON)
A connection level model for IEEE 802.11 cells
Proceedings of the 5th International Latin American Networking Conference
Performance analysis under finite load and improvements for multirate 802.11
Computer Communications
Flow-level performance and capacity of wireless networks with user mobility
Queueing Systems: Theory and Applications
Fast track article: Backlogged queue based MAC frame aggregation
Pervasive and Mobile Computing
IEEE 802.11n MAC frame aggregation mechanisms for next-generation high-throughput WLANs
IEEE Wireless Communications
IEEE Transactions on Wireless Communications
Opportunistic beamforming using dumb antennas
IEEE Transactions on Information Theory
Performance analysis of the IEEE 802.11 distributed coordination function
IEEE Journal on Selected Areas in Communications
| Hi-index | 0.00 |
Recent developments on the IEEE 802.11 family of standards promise significant increases in speed by incorporating multiple enhancements at the physical layer. These high modulation speeds apply to the data portion of the transmitted frames, while headers must remain at lower speeds; this has motivated the use of frame aggregation to increase data payloads in the newer standards. However, this simple method may still utterly fail to deliver the promised speeds, due to a series of cross-layer effects involving the transport and multiple access layers: the downward equalization of throughputs imposed by TCP under physical rate diversity, the excessive impact of the TCP ACK stream, or the unreasonable fraction of access opportunities taken by uplink flows when competing with the more numerous downlink connections. A first contribution of this paper is to demonstrate these impediments and isolate their causes through a series of experiments with the ns3 packet simulator, on the 802.11n and 802.11ac protocol versions. Our analysis leads us to propose a desirable resource allocation for situations of rate-diverse competition, and an architecture for control at the access-point to achieve it. Our implementation is compatible with the standard, involving a combination of known techniques: packet aggregation, multiple queues with TCP-ACK isolation, and control of the MAC contention window. The main contribution here is to provide a practical, comprehensive solution that imposes the desired efficiency and fairness model addressing all the previously indicated limitations. We demonstrate analytically and through extensive simulation that our method is able to provide significant enhancements in performance under a variety of traffic conditions.