Mojtaba Ghanei Tayyebloo - Faculty of Electronic, Computer & IT - Department of IT-Islamic Azad University-Qazvin Branch- Qazvin, Iran
Mehdi Dehghan TakhtFooladi - Faculty of Electronic, Computer & IT - Department of IT- Amirkabir University of Technology- Tehran, Iran

The important goal of wireless sensor networks is data gathering and use sensed data in various applications such as monitoring, medical purposes, military and etc. hence it is very important how to use mobile sink for data gathering. On other side it is very Efficient to create virtual infrastructure on main network to organized and managed network and followed by increase performance in such applications. In this paper, based on controlled mobility of sink and also variable and adaptive speed of sink according to buffer of cluster heads on clustered network, we proposed a motion method of sink into the network and gather sensed data from cluster heads. simulation results show reduced delay of data gathering comparison to previous approaches and better energy efficiency.

Mobile Sink, Virtual infrastructure, Adaptive Speed