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Given the fact that LEACH protocol didn't take the residual energy of nodes into account when choosing the cluster heads, which may result in the node with rather low energy to be chosen as a cluster head. Thus, it will cause the cluster created by this low-energy node to be dead at an early stage, which wastes the whole network's resource. Here in this paper, we introduced an energy factor when choosing...
Extended network lifetime and load balancing are important requirements for many WSN applications. There are many clustering routing schemes for homogeneous proactive and reactive WSNs but they suffer from the problem of uneven load distribution and back transmission. This paper presents an energy efficient load balanced clustering scheme with away cluster head (ACH) scheme and free association mechanism...
Wireless sensor networks consist of spatially distributed sensor nodes, which can sense the environment by collecting, processing and transmitting the data to sink node. A critical issue in wireless sensor networks since most sensors is equipped with non-rechargeable batteries. The lifetime of a sensor network can be extended by jointly applying different techniques of scheduling and routing schemes...
Wireless sensor networks(WSNs) are very important for monitoring underground mine safety. Aimed at the characteristics of structure of the tunnel in underground mine, the tunnel wireless sensor network (TWSN) is presented to monitor the tunnel. TWSN has the unbalanced communication load which leads to early invalidation of nodes close to the base station. The nonuniform clustering algorithm for TWSN...
In wireless sensor networks (WSNs) application we sometimes only require single moment local field information, but traditional periodical all-network information collecting mode consumes much network resources. In order to satisfy Quality of Service (QoS) demands of information collection in wireless sensor networks, prolong network lifetime and minimize control overheads while insuring connectivity,...
This paper analyses three existing methods of WSN data storage. Based on disadvantage of data-centric storage(DCS), the shortest path first of DCS(SPF-DCS) is present. Compared to DCS, the advantage of this method is that home node finds only one node as its own replica node. SPF-DCS can reduce communication between home node and other nodes, decrease the power consumption of node and prolong lifetime...
Sink mobility has become an increasingly important requirement of various sensor network applications. Handling such mobile sink conditions brings new challenges to large-scale sensor networking. This investigation proposed a hybrid-structure routing protocol (HSRP) that combines the benefits of grid-based and cluster-based structures. Grid-based structure is designed to solve the cluster head selection...
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