Improvement on LEACH Protocol of Wireless Sensor Network
ABSTRACT This paper studies LEACH protocol, and puts forward energy-LEACH and multihop-LEACH protocols. Energy-LEACH protocol improves the choice method of the cluster head, makes some nodes which have more residual energy as cluster heads in next round. Multihop-LEACH protocol improves communication mode from single hop to multi-hop between cluster head and sink. Simulation results show that energy-LEACH and multihop-LEACH protocols have better performance than LEACH protocols.
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ABSTRACT: Due to the advances in wireless communications and electronics technology, Wireless Sensor Networks (WSNs) are used in many applications such as civil and military application. A WSN is composed on many nodes each of which is basically equipped with a sensing device to collect data from the environment, a processing unit to do some operations on data, a transceiver to send and receive collected, and an energy sourceto provide the required energy to operate (usually a battery). In most applications sensor nodes are randomly deployed in the field. Therefore, battery replacement or charging is considered not practical. As a result, routing protocols must be energy-efficient to prolong the network lifetime. Researchers have been working to develop routing techniques that enhances the WSN lifetime among which is the hierarchical routing. In this paper, we present a recent survey of hierarchical routing protocols which are based on LEACH protocol. Specifically, we will show the network life time and energy consumption for each protocol. Furthermore, a comparison of these protocols in terms of advantages (improvements over LEACH), disadvantages, assumptions, and the Cluster Head selection criteria are provided.Journal of Communications and Engineering & Technology Publishing. 03/2013; 8(3):192.
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ABSTRACT: Long distance communication overhead is one main reason of quick exhaustion of battery power in wireless sensor network (WSNs). Such type of scenarios can decrease the performance of network or even sometimes make the network useless. Energy efficient protocols are required to enhance network lifetime as well as network performance in WSNs. Several protocols have been proposed to reduce communication overhead in WSNs using energy efficient techniques. This paper proposes improved energy efficient clustering protocol called MultihopFarZoneLeachProtocol (MFZLP) which uses multihop technique in Far Zone (FZ) LEACH to enhance further efficiency as well as lifetime of network. The experimental simulations show that MFZLP outperforms other existing approaches in terms of energy consumption and prolong network lifetime.OURNAL OF COMPUTATIONAL INTELLIGENCE AND ELECTRONIC SYSTEMS. 06/2013; volume 2(1):45-49.
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ABSTRACT: Due to the big and essential role played by the cluster head in hierarchical protocols of wireless sensor network, it consumes an amount of energy more than the member nodes of the cluster. Therefore, the hierarchical protocols usually suffer from a packet loss due to frequent cluster head failure during the data transmission. This decreases the communication reliability in wireless sensor network applications. Errors caused by data loss inevitably affect the data analysis and subsequent decision making. This paper introduces, the Low-Loss Low-Energy Adaptive Clustering Hierarchy Centralized Protocol (LLEACH-C); LLEACH-C provides a cluster head recovery mechanism, which recovers the cluster head's death during the protocol round operation. This is a missing mechanism in LEACH-C protocol, the protocol that is one of the most popular in hierarchical protocols. The simulation results showed that, LLEACH-C succeeds in decreasing the data packet loss by on average 43% over LEACH-C, and in increasing the lifetime of the network by on average 69.3% more than VLEACH, the protocol that also proposes a mechanism for cluster head death recovery. Furthermore the behavior of the LLEACH-C, in both of the End to End delay and Throughput, are analyzed and compared to VLEACH.IJCSI International Journal of Computer Science Issues. 09/2013; 10(5):97-106.