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Low energy adaptive clustering hierarchy (LEACH) is widely discussed, in the literature, for energy efficient data centric wireless sensor networks. Due to its seminal nature it has emerged as a benchmark for performance comparison. For uniform energy consumption of sensor nodes, it suggests rotation of the clusterhead role after a fixed duration, with probabilistic selection of sensor nodes as clusterheads...
The lifetime of a wireless sensor network is constrained by the limited energy and processing capabilities of its nodes. The network lifetime can be maximized when the energy of different nodes of the network depletes uniformly during the sensing, processing and forwarding the data to the sink. Since, the energy required per bit for communication is around two orders of magnitude higher than computation,...
Clustering is a widely discussed as an important architecture for data centric wireless sensor networks. Low energy adaptive clustering hierarchy (LEACH), proposed in past, is used as benchmark scheme by many proposals and its performance is widely studied in the literature, over last few years. The probabilistic and randomized clusterhead selection strategy results in variable number of clusterheads...
Due to non-uniform network architectures and different kinds of performance requirements in different applications, a universal method of performance evaluation for wireless sensor network is still lacking at present. The new performance evaluation criteria system for wireless sensor network are defined in this paper, such as residual energy, network lifetime and coverage degree. And a synthetic multi-criteria...
In wireless sensor networks, it is an important task to periodically collect data from an area of interest for time-sensitive applications. The sensed data must be gathered and transmitted to a base station for further processing to meet the end-user queries. Since the network consists of low-cost nodes with limited battery power, it is a challenging task to design an efficient routing scheme that...
In order to prolong the network lifetime, energy-aware protocols should be designed to adapt the characteristic of wireless sensor networks. Clustering is a kind of key routing technique used to reduce energy consumption. In this paper, a new clustering algorithm MNLC (Maximum Network Lifetime Clustering Algorithm) for energy heterogeneous sensor networks is proposed. The algorithm uses distributed,...
The overlapping layers (OL) scheme proposed in our previous work provides a solution to balance the load of cluster heads at different layers in the PMRC-based wireless sensor networks. However, in the OL scheme, the layer boundary and the overlap range are static through the network lifetime. The network lifetime is still limited by some nodes which have only one candidate cluster head. To overcome...
Given the criticality of energy awareness in wireless networks, it has become essential to devise an improved definition of the network lifetime at the system design stage. The new definition must capture the life profile of the network while accounting for its functionality and specific design parameters. This paper presents the notion of network durability, which captures the spatiotemporal life/death...
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