Designing energy efficient access points with Wi-Fi Direct

• Published in: Computer networks (Amsterdam, Netherlands : 1999) Vol. 55; no. 13; pp. 2838 - 2855
• Main Authors: Camps-Mur, Daniel, Pérez-Costa, Xavier, Sallent-Ribes, Sebastià
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier B.V 15-09-2011; Elsevier; Elsevier Sequoia S.A
• Subjects: Adaptive algorithms; Algorithms; AP power saving; Applied sciences; Business and industry local networks; Computer networks; Computer simulation; Energy efficiency; Exact sciences and technology; Miscellaneous; Mobile communication systems; Networks; Networks and services in france and abroad; Operation, maintenance, reliability; QoS; Studies; Systems, networks and services of telecommunications; Telecommunications; Telecommunications and information theory; Teleprocessing networks. Isdn; Tradeoffs; Wi-Fi Direct; Wireless access points; Wireless communication; QoS; AP power saving; Wi-Fi Direct; Performance evaluation; Wireless LAN; Wireless telecommunication; Algorithm; Energy savings; Simulation; Electric power consumption; Portable equipment; Minimum energy; Service quality
• ISSN: 1389-1286; 1872-7069
• DOI: 10.1016/j.comnet.2011.06.012

Wi-Fi Direct is a new technology defined by the Wi-Fi Alliance in order to enable efficient device-to-device communication. Portable devices are a main target of this technology and hence, power saving is a key objective. In this paper we analyze the power saving protocols defined in Wi-Fi Direct and design two algorithms to efficiently use them: Adaptive Single Presence Period (ASPP) and Adaptive Multiple Presence Periods (AMPP). Operating only with layer two information, our proposed algorithms allow Wi-Fi Direct mobile devices to address the trade-off between performance and energy consumption in a configurable manner when offering access to an external network. The two algorithms presented, ASPP and AMPP, are evaluated by OPNET simulations.