A Cooperative Multi-Hop Clustering Protocol for Energy Saving of Mobile Devices
P. Narasimhaiah, S. Vasundra · International journal of advanced research in computer science and electronics engineering · 2012
Wireless local area network (WLAN), or IEEE 802.11, has become a most popular because of its sufficient bandwidth and well-constructed infrastructures. But, a serious problem of WLAN is its considerable energy consumption. Mobile devices are driven by limited battery power, so it is essential to reduce the power consumption due to WLAN interface without degrading its performance. This can be achieved by using the co-existence of WLAN and Bluetooth in a single mobile platform to solve the power consumption problem in WLAN based communication systems. This work is based on Multi-Hop Clustering proposed to increase the life time of network. This protocol selects the cluster head considering three factors, maximum energy, the number of neighbouring nodes, and distance to the access point. In this paper, a cluster is a Bluetooth Personal Area Network (PAN), which consists of one cluster head and several regular nodes .The cluster head acts as gateway between the PAN and the WLAN and enabling the regular nodes to access the WLAN. This paper presents a Cooperative Multi-Hop Clustering Protocol , which dynamically reforms clusters according to the each nodes bandwidth requirement, energy use, and application type. This protocol does not require the modifications of existing wireless infrastructures. This protocol simulated for large network more than 200 nodes. But results demonstrate that, this approach is effective in reducing the power consumption of the WLAN.