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Research of energy-efficient hybrid communication algorithm in wireless sensor networks
Abstract
An energy-efficient hybrid communication algorithm (EEHCA) based on the classic low energy adaptive clustering algorithm (LEACH) was proposed. The cluster heads were selected in terms of residual energy of nodes and distance between cluster heads by base station. And sensor nodes communicate with cluster heads alternately with single hop mode and multi-hop mode. The probability of single hop mode was p and The probability of multi-hop mode was 1?p. The hybrid communication mode obtained a more uniform distribution of cluster heads and balanced load of sensor nodes. The results of simulation show that the algorithm effectively balances the energy consumption of nodes. And the algorithm has been proposed is clearly better than LEACH in prolonging the lifetime of WSN.
... Improving the battery capacity to extend the terminal working time is an efficient method, but the related research shows that the battery capacity cannot be improved greatly in near future. In the past three decades, the capacity of the battery unit volume only increase less than four times, while the gap between the capacity of the battery and the microprocessor's energy consumption is increasing 20%~30% every year [7]. If there is no certain method is adopted to reduce the sensor's energy consumption, the battery will become an important bottleneck of IOT in transmission line, so how to efficient using the battery's energy is an important question. ...
This paper presents a three layered network construction of Internet of Things (IOT) communication method for high-voltage transmission line which involves the wireless self-organized sensor network (WSN), optical fiber composite overhead ground wire (OPGW), general packet radio service (GPRS) and the Beidou (COMPASS) navigation satellite system (CNSS). The function of each layer of network, application deployment and management of energy consumption are studied. The method can meet the needs of interconnection between the monitoring center and terminals, reduce the terminals’ GPRS and CNSS configuration and OPGW optical access points, and ensure the on-line monitoring data transmission real-time and reliable under the situation of remote region, extreme weather and other environmental conditions.
An energy-balanced unequal clustering algorithm is proposed to solve the "hotspot" problem caused by long ribbon topology of mine roadway, in which the cluster heads close to the sink which has heavy burden leading to failure. A new threshold formula is constructed to elect the candidate cluster heads. Candidate cluster heads determine the cluster heads by certain campaign radius. After a reasonable partition, the clusters closer to the sink node have fewer nodes than those farther away from the sink node to balance the energy consumption; the hybrid communication mode within the cluster is adopted for the load balancing; for the data-forwarding between the cluster heads, the lowest energy consumption mechanism is proposed to select the next hop. Simulation results show that this protocol can balance energy consumption effectively to extend the network life cycle.
In view of cluster-router protocols in wireless sensor network (WSN), we elaborate on classification and analysis of currently typical cluster-router protocols. The advantages and disadvantages of each protocol are examined from cluster load balance, data fusion, cluster-head generation velocity, cluster generation velocity, cluster maintaining cost, algorithm robustness, algorithm extendibility, and algorithm energy-saving property. The hot topics and tendency of the research are drawn at last.
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