دانلود رایگان مقاله انگلیسی الگوریتم خوشه بندی برای طول عمر شبکه بهبود یافته شبکه های حسگر بی سیم موبایل - IEEE 2017

Abstract

In this paper, we propose LEACH-CCH as a clustering algorithm aimed at improving wireless sensor network lifetime in the case of mobile sensor nodes. LEACH-CCH is a modification of the LEACH algorithm, which was developed for stationary networks. An analysis of energy consumption for the LEACH algorithm is presented to identify which data transmissions are most energy expensive for a node throughout its lifetime. LEACH-CCH reduces the energy expended during the costliest data transmission. By predicting the future positions of sensor nodes and restructuring clusters accordingly, an improvement is seen in overall network lifetime when compared with LEACH.

IV. CONCLUSION AND FUTURE WORK

It has been demonstrated that LEACH-CCH achieves improved network lifetime over LEACH in both cases of stationary and mobile sensor nodes. LEACH-CCH achieves this improvement by restructuring sensor node clusters before the beginning of the steady-state phase. By reselecting cluster-heads based on which node is closest on average to the center of the cluster, the distances non-cluster-head nodes must transmit their data are improved. Future work will consider forming clusters based on predicting future node movement to minimize cluster decay throughout the steady-state phase of the round. Future work will also observe the scenario in which cluster decay becomes more of an issue when radio transmission capability is limited, in which case a node can travel out of range of its clusterhead resulting in a loss of data.