Relay-assisted wireless energy harvesting for multihop clustered IoT network  

作　　者：B.Pavani K.Venkata Subbareddy L.Nirmala Devi 

机构地区：[1]the Department of Electronics and Communication Engineering,University College of Engineering,Osmania University,Hyderabad 500007,India

出　　处：《Intelligent and Converged Networks》2023年第3期206-224,共19页智能与融合网络（英文）

摘　　要：In large-scale networks such as the Internet of Things(IoT),devices seek multihop communication for longdistance communications,which considerably impacts their power exhaustion.Hence,this study proposes an energy harvesting-enabled,relay-based communication in multihop clustered IoT networks in a bid to conserve the battery power in multihop IoT networks.Initially,this study proposes an efficient,hierarchical clustering mechanism in which entire IoT devices are clustered into two types:the closest cluster(CC)and remote clusters(RCs).Additionally,Euclidean distance is employed for the CC and fuzzy c-means for the RCs.Next,for cluster head(CH)selection,this study models a fitness function based on two metrics,namely residual energy and distance(device-to-device distance and device-to-sink distance).After CH selection,the entire clustered network is partitioned into several layers,after which a relay selection mechanism is applied.For every CH of the upper layer,we assign a few lower-layer CHs to function as relays.The relay selection mechanism is applied only for the devices in the RCs,while for devices in the CC,the CH functions as a relay.Finally,several simulation experiments are conducted to validate the proposed method’s performance.The results show the method’s superiority in terms of energy efficiency and optimal number of relays in comparison with the state-of-the-art methods.

关 键 词：Internet of Things(IoT) energy management CLUSTERING cluster head selection relay selection 

分 类 号：TP39[自动化与计算机技术—计算机应用技术]