Research on Improvement of LEACH Protocol with Heterogeneous Nodes

2013 ◽  
Vol 765-767 ◽  
pp. 1675-1679
Author(s):  
Li Cui Zhang ◽  
Dan Wang ◽  
Xiao Fei Xu
Keyword(s):  
Energy Efficiency ◽  
Wireless Sensor Networks ◽  
Load Balance ◽  
Optimal Number ◽  
Wireless Sensor ◽  
Communication Mode ◽  
Cluster Heads ◽  
Leach Protocol ◽  
Heterogeneous Nodes ◽  
Cluster Probability

It is necessary to consider the energy efficiency of nodes and load balance in wireless sensor networks. This paper combines with the network of the actual heterogeneous nodes, the improved algorithm of LEACH is proposed, which is called LEACH-HA. The optimal number of cluster heads is derived with improved in the network which increases energy of nodes become cluster probability. A hybrid communication mode that cluster heads alternate between single hop and multi-hop mode is proposed. After analysis LEACH-HA improves the energy efficiency among nodes and expands the coverage of network.

scholarly journals An Optimal Cluter Head Parameter in Leach Protocol of Wireless Sensor Networks

2020 ◽  
Vol 18 (4.2) ◽  
pp. 8
Author(s):  
Tat-Bao-Thien Nguyen
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Energy Saving ◽  
Efficient Solution ◽  
Optimal Number ◽  
Optimal Performance ◽  
Wireless Sensor ◽  
Cluster Heads ◽  
Leach Protocol ◽  
Head Parameter

In wireless sensor networks, LEACH is often used as an energy saving protocol and extends the network life. However, there are many parameters that affect the performance of the LEACH protocol, one of which is the number of cluster heads. This paper proposes a simple and efficient solution to determine the optimal number of cluster heads in the LEACH protocol. For the proposed solution, the system can achieve the optimal performance between the longest lifetime in the constraint as the largest amount of data transmitted in the network.   

scholarly journals Energy-Efficient MAC Protocol for Wireless Sensor Networks - A Review

2012 ◽  
pp. 107-111
Author(s):  
Smriti Joshi ◽  
Anant Kr. Jayswal
Keyword(s):  
Energy Efficiency ◽  
Wireless Sensor Networks ◽  
Wireless Sensor Network ◽  
Sensor Networks ◽  
Sensor Network ◽  
Load Balance ◽  
Mac Protocol ◽  
Average Energy ◽  
Wireless Sensor ◽  
Wsn Lifetime

Energy efficiency is the kernel issue in the designing of wireless sensor network(WSN) MAC protocols. Energy efficiency is a major consideration while designing wireless sensor network nodes. Most sensor network applications require energy autonomy for the complete lifetime of the node, which may span up to several years. These energy constraints require that the system be built such that Wireless sensor networks use battery-operated computing and sensing devices. A network of these devices will collaborate for a common application such as environmental monitoring. Each component consumes minimum possible power, ensure the average successful transmission rate, decrease the data packet average waiting time, and reduce the average energy consumption. Influencing by the design principles of traditional layered protocol stack, current MAC protocol designing for wireless sensor networks (WSN) seldom takes load balance into consideration, which greatly restricts WSN lifetime. As a novel Forwarding Election-based MAC protocol, is presented to prolong WSN lifetime by means of improving energy efficiency and enhancing load balance.

Energy Efficient Multi-Hop Wireless Sensor Networks with CMIMO-SM Scheme

2014 ◽  
Vol 666 ◽  
pp. 322-326
Author(s):  
Yu Yang Peng ◽  
Jae Ho Choi
Keyword(s):  
Energy Efficiency ◽  
Wireless Sensor Networks ◽  
Energy Consumption ◽  
Sensor Networks ◽  
Energy Efficient ◽  
Optimal Number ◽  
Sensor Nodes ◽  
Wireless Sensor ◽  
Improve Energy Efficiency ◽  
Output System

Energy efficiency is one of the important hot issues in wireless sensor networks. In this paper, a multi-hop scheme based on a cooperative multi-input multi-outputspatial modulation technique is proposed in order to improve energy efficiency in WSN. In this scheme, the sensor nodes are grouped into clusters in order to achieve a multi-input multi-output system; and a simple forwarding transmission scenario is considered so that the intermediate clusters only forward packets originated from the source cluster down to the sink cluster. In order to verify the performance of the proposed system, the bit energy consumption formula is derived and the optimal number of hopsis determined. By qualitative experiments, the obtained results show that the proposed scheme can deliver the data over multiple hops consuming optimal energy consumption per bit.

scholarly journals An Improved Leach Algorithm Based on Wireless Sensor Networks

2019 ◽  
Vol 8 (2S8) ◽  
pp. 1623-1628
Keyword(s):  
Energy Efficiency ◽  
Wireless Sensor Networks ◽  
Base Station ◽  
Low Energy ◽  
Sensor Nodes ◽  
Wireless Sensor ◽  
Current Generation ◽  
Cluster Heads ◽  
Computation Algorithm ◽  
Stable Election Protocol

In our current generation, wireless sensor network is much in use and has become quintessential. With wide improvement of technology and the various ranges developed in communication and in other aspects, this document mainly focuses on the LEACH algorithm (Adaptive Low Energy Hierarchy) and the second most important methodology used is the SEP (stable election protocol). We have discovered improvements in energy efficiency by comparing our results with these two algorithms and the sensor mortality rate is reduced to a greater extent. This research proposes an improved computation algorithm method for the calculation of LEACH clustering, by considering the importance of the cluster heads and the sensor nodes present, T (n) is reorganisedrecommendinga procedure that focuses on reducing the energy consumption. The combined rate of information is found by allowing cluster heads to gather information before it is sent to base station. This improved computation algorithmwill be able to increase vital utilisation of networks and increase sensor life.

scholarly journals Clustering Algorithm of Wireless Sensor Networks Based on Residual Energy

2012 ◽  
Vol 6-7 ◽  
pp. 831-835
Author(s):  
Chang Lin Ma ◽  
Yuan Ruan
Keyword(s):  
Energy Efficiency ◽  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Clustering Algorithm ◽  
Residual Energy ◽  
Sensor Nodes ◽  
Wireless Sensor ◽  
Energy Factor ◽  
Leach Protocol ◽  
Limited Power

In order to improve the lifetime and throughput of wireless sensor networks under the limited power, an improved clustering algorithm is proposed in this paper on the basis of LEACH protocol. The energy factor is considered in this algorithm. The residual energy of all sensor nodes is referred to select cluster-heads of wireless sensor networks. The new clustering algorithm effectively improves the energy efficiency, throughput and lifetime of wireless sensor networks. The results are proved by simulations.

An Improvement Routing Protocol Based LEACH for Wireless Sensor Networks

2014 ◽  
Vol 614 ◽  
pp. 472-475 ◽  
Author(s):  
Jin Gang Cao
Keyword(s):  
Wireless Sensor Networks ◽  
Energy Consumption ◽  
Sensor Networks ◽  
Routing Protocol ◽  
Base Station ◽  
Optimal Number ◽  
Sensor Nodes ◽  
Wireless Sensor ◽  
Number Of Clusters ◽  
Cluster Heads

Due to limited energy, computing ability, and memory of Wireless sensor Networks(WSN), routing issue is one of the key factors for WSN. LEACH is the first clustering routing protocol, which can efficiently reduce the energy consumption and prolong the lifetime of WSN, but it also has some disadvantage. This paper proposed an improvement based LEACH, called LEACH-T. According to different number of clusters, LEACH-T uses variable time slot for different clusters in steady-state phase, and single-hop or multi-hop to transmit data between cluster heads and Base Station. Also it considered residual energy of sensor nodes and the optimal number of clusters during selection of the cluster heads. The simulation results show that LEACH-T has better performance than LEACH for prolonging the lifetime and reducing the energy consumption.

Improvement of Cluster-Head Selection Mechanism Based on LEACH Protocol in Wireless Sensor Networks

2014 ◽  
Vol 989-994 ◽  
pp. 4273-4276
Author(s):  
Shi Ping Fan ◽  
Xiao Di Zhang ◽  
Hai Li Wang
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Cluster Head ◽  
Premature Death ◽  
Residual Energy ◽  
Wireless Sensor ◽  
Cluster Head Selection ◽  
Selection Mechanism ◽  
Cluster Heads ◽  
Leach Protocol

In order to prolong the lifetime of wireless sensor networks, improvement of cluster-head selection mechanism based on LEACH protocol is proposed. To make the energy distribution more uniform, we consider the relationship of the density of nodes, residual energy of nodes and distance between nodes and Sink node. It eliminates the defect of energy consumption imbalance in the network caused by random position of cluster-heads and the problem of premature death of nodes caused by low energy nodes becoming cluster-heads. Simulation results show that compared with LEACH algorithm, the improved algorithm extend the network lifetime.

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