TY - CONF T1 - Power Management and Rate Control Mechanism for Wi-Fi Infrastructure Networks T2 - The 6th International Workshop on Wireless Networks and Multimedia (WNM - 2015), Liverpool, UK Y1 - 2015 A1 - Christos Bouras A1 - Vaggelis Kapoulas A1 - Kostas Stamos A1 - Nikos Stathopoulos A1 - Nikolaos Tavoularis AB -

The advances in wireless networks have encouraged the use of mobile devices in everyday life. However, one of the main problems of these devices is the limited amount of energy they have available to use in order to function and the extended energy consumption of wireless adapters. A lot of research has been done to reduce the amount of energy spent on wireless communications. On the other hand, the extended use of wireless networks causes interference problems in communications, which affect the overall performance of each network. The purpose of this work is to provide a mechanism, which can reduce the power consumption on the station side and increase the mobile devices’ operation time, and in combination with a rate adaptation mechanism on the access point side, improve the overall performance of the network.

JF - The 6th International Workshop on Wireless Networks and Multimedia (WNM - 2015), Liverpool, UK ER - TY - JOUR T1 - A Signal Adaptation Mechanism for power optimization of wireless adapters JF - International Journal of Wireless Networks and Broadband Technologies, IGI Global Y1 - 2015 A1 - Christos Bouras A1 - Vaggelis Kapoulas A1 - Georgios Kioumourtzis A1 - Kostas Stamos A1 - Nikos Stathopoulos A1 - Nikolaos Tavoularis AB -

This manuscript introduces, implements and evaluates a feedback-based adaptation mechanism that adjusts the transmission power of a wireless card on commodity mobile devices. Main focus of this work is to minimize the power consumption by adjusting the transmission power of the wireless card, thus extending the battery life, while negative effects on connection quality are avoided. To achieve that, a mechanism that optimizes the power depending on the quality of the connection is presented, which measures the quality of the transmission and adjusts the transmission power, by utilizing an expanded array of metrics, for more accurate estimation. The mechanism has been implemented and tested on actual wireless adapters. In order to evaluate, fine-tune and improve the mechanism, a list of real environment experiments has been performed. The results indicate that power consumption can be significantly reduced for nodes that are either almost stationary or slowly moving, without any significant increase in packet loss.

VL - 4(3) ER -