Leveraging 802.11n frame aggregation to enhance QoS and power consumption in Wi-Fi networks |
| |
Authors: | Daniel Camps-Mur Manil Dev Gomony Xavier Pérez-Costa Sebastià Sallent-Ribes |
| |
Affiliation: | 1. NEC Network Laboratories, Kurfürsten-Anlage 36, Heidelberg, Germany;2. Electronic Systems Group of the Eindhoven University of Technology, Netherlands;3. Fundació i2cat, c/ Gran Capita 2-4,Universitat Politècnica de Catalunya, Spain;1. Depto. de Química, Universidade Estadual de Londrina, 86051-990 Londrina, PR, Brazil;2. Depto. Física, Universidade Estadual de Londrina, 86051-990 Londrina, PR, Brazil;1. Ghent University—iMinds, Gaston Crommenlaan 8, B-9050 Ghent, Belgium;2. IIT kharagpur, Kharagpur, India |
| |
Abstract: | The Wi-Fi technology, driven by its tremendous success, is expanding into a wide variety of devices and applications. However, many of these new devices, like handheld devices, pose new challenges in terms of QoS and energy efficiency. In order to address these challenges, in this paper we study how the novel MAC aggregation mechanisms developed in the 802.11n standard can be used to enhance the current 802.11 QoS and power saving protocols. Our contribution is twofold. First, we present a simulation study that illustrates the interactions between 802.11n and the current 802.11 QoS and power saving protocols. This study reveals that the 802.11n MAC aggregation mechanisms perform better when combined with the power save mode included in the original 802.11 standard than with the 802.11e U-APSD protocol. Second, we design CA-DFA, an algorithm that, using only information available at layer two, adapts the amount of 802.11n aggregation used by a Wi-Fi station according to the level of congestion in the network. A detailed performance evaluation demonstrates the benefits of CA-DFA in terms of QoS, energy efficiency and network capacity with respect to state of the art alternatives. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|