• KSII Transactions on Internet and Information Systems
    Monthly Online Journal (eISSN: 1976-7277)

Provisioning QoS for WiFi-enabled Portable Devices in Home Networks

Vol. 5, No. 4, April 28, 2011
10.3837/tiis.2011.04.006, Download Paper (Free):


Wi-Fi-enabled portable devices have recently been introduced into the consumer electronics market. These devices download or upload content, from or to a host machine, such as a personal computer, a laptop, a home gateway, or a media server. This paper investigates the fairness among multiple Wi-Fi-enabled portable devices in a home network when they are simultaneously communicated with the host machine. First, we present that, a simple IEEE 802.11-based home network suffers from unfairness, and the fairness is exaggerated by the wireless link errors. This unfairness is due to the asymmetric response of the TCP to data-packet loss and to acknowledgment-packet loss, and the wireless link errors that occur in the proximity of any node; the errors affect other wireless devices through the interaction at the interface queue of the home gateway. We propose a QoS-provisioning framework in order to achieve per-device fairness and service differentiation. For this purpose, we introduce the medium access price, which denotes an aggregate value of network-wide traffic load, per-device link usage, and per-device link error rate. We implemented the proposed framework in the ns-2 simulator, and carried out a simulation study to evaluate its performance with respect to fairness, service differentiation, loss and delay. The simulation results indicate that the proposed method enforces the per-device fairness, regardless of the number of devices present and regardless of the level of wireless link errors; furthermore it achieves high link utilization with only a small amount of frame losses.


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Cite this article

[IEEE Style]
E. Park, N. Kwak, S. K. Lee, J. Kim and H. Kim, "Provisioning QoS for WiFi-enabled Portable Devices in Home Networks," KSII Transactions on Internet and Information Systems, vol. 5, no. 4, pp. 720-740, 2011. DOI: 10.3837/tiis.2011.04.006.

[ACM Style]
Eun-Chan Park, Nojun Kwak, Suk Kyu Lee, Jong-Kook Kim, and Hwangnam Kim. 2011. Provisioning QoS for WiFi-enabled Portable Devices in Home Networks. KSII Transactions on Internet and Information Systems, 5, 4, (2011), 720-740. DOI: 10.3837/tiis.2011.04.006.

[BibTeX Style]
@article{tiis:19955, title="Provisioning QoS for WiFi-enabled Portable Devices in Home Networks", author="Eun-Chan Park and Nojun Kwak and Suk Kyu Lee and Jong-Kook Kim and Hwangnam Kim and ", journal="KSII Transactions on Internet and Information Systems", DOI={10.3837/tiis.2011.04.006}, volume={5}, number={4}, year="2011", month={April}, pages={720-740}}