Energy efficient VoIP communication using WSN clustering approach

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.