Energy Efficient VoIP Communication Using WSN Clustering Approach Manish Tembhurkar Student IV Sem M.E.(Mobile Technology) Department of Computer Science & Engineering G.H.Raisoni College of Engineering Nagpur, India manish.tembhurkar@raisoni.net manish.tembhurkar@gmail.com Dr. Latesh Malik Head of the Department Department of Computer Science & Engineering G.H.Raisoni College of Engineering Nagpur, India latesh.malik@raisoni.net lgmalik@rediffmail.com Nekita Chavhan Associate Professor Department of Computer Science & Engineering G.H.Raisoni College of Engineering Nagpur, India nikita.chavan@raisoni.net niki.chavan@gmail.com Abstract— VoIP refers to communications services —voice and/or voice-messaging applications— that are transported via the Internet, rather than the public switched telephone network (PSTN). Rate of evolution of mobile services (such as data transfer service (GPRS, EDGE, 3G, and 4G LTE), audio & video player service, camera with higher resolution, GPS) is much higher than that of energy resources or energy conservation. The wide deployment of Voice-over-IP (VoIP) over IEEE 802.11 wireless LAN causes higher rate of energy consumption which is a major issue both in wireless sensor network as well as in mobile networks. Researchers have found out several solutions to overcome this issue such as Greencall Algorithm, algorithm through trace-driven simulations as well as experiments on commodity hardware/software [Energy-Efficient VoIP over Wireless LANs]. More efficient & effective solution is needed. Keywords—Voice over IP, Wireless Sensor Network, Energy Efficiency, Clustering Approach, Mobile Communication, Android I. INTRODUCTION Mobile services are evolving with much higher rate than that of energy resources or energy conservation which causes energy consumption as a major issue not only in wireless sensor network but in mobile networks. The common factor between these two networks is that they have limited resources in terms of energy and power. We cannot ignore this need and be stationary at one place for continuous power source for our devices. The issue of low battery life [1] in mobile devices such as mobile phones and laptops, cause a major concern in certain scenarios such as war, military applications, medical emergencies. In previous works, however, assume-stations were always awake during a call till in 2005, the Wi-Fi Alliance proposed a power saving mode extension which allows stations to retrieve packets from the Access Point (AP) in any mode, at any time. This helps to conserve energy by staying in sleep mode during VoIP call over WLAN (Wireless Local Area Network) (Greencall algorithm [2]: reduces considerable energy consumption using PSM (Power save mode)). But a totally new approach is needed. Nowadays mobile phones with evolutionary technologies (such as 3G, 4G LTE) are dominating the market of cellular communication systems [1], [3], [4]. Figure 1: Power consumption for different phone’s services normalized to the power consumption needed for downloading data using HSDPA. 0 20 40 60 80 100 120 Normalised Power Consumption (%) [Services] 978-1-4673-4463-0/13/$31.00 ©2013 IEEE The 8th International Conference on Computer Science & Education (ICCSE 2013) April 26-28, 2013. Colombo, Sri Lanka 234 SaB2.8