N012energy Management in a Wireless Sensor Network based on Cluster Head Selection

DOI : 10.17577/IJERTCONV3IS27075

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N012energy Management in a Wireless Sensor Network based on Cluster Head Selection

Kumari Pooja Rai

L Manasa

Upasana D

Mrs. Geetha S





Abstract: – Due to the necessity of saving energy cost in low powered devices, extending the lifetime of a sensor node powered by battery in homogeneous wireless sensor networks (WSNs) is area of interest. Sensor network consists of multiple sensor nodes, each of which is tiny, lightweight and operated by rechargeable or non rechargeable batteries depend on the type of applications. Once a sensor node collects information from the environment, it transmits the information to the base station (BS) of the network. The longer transmission in a WSN is the most energy consuming activity, diverts in shorter the network lifetime as expected. If the network is unable to operate due to quick drain of battery power, the system collapsed and the network needs to be reconfigured by either recharging/replacing batteries or replacing the sensor nodes. Such a condition demands for designing an energy efficient clustering technique which reduces the number of communications to converge the desired lifetime of a WSN. We aim at bringing this forward in our project in order to save energy cost in low powered batteries thereby extending their lifetime.

Keywords : Wireless sensor networks ,Cluster head.


Sensor networks are special category of ad hoc wireless network that are used to provide a wireless communication infrastructure among the sensor deployed in a specific application domain.[1] Sensor nodes are tiny devices that have capability of sensing physical parameters processing the data gathered, and communication to the monitering system.Characterstics that make sensor network a distinct category of ad hoc wireless network are the following:

  • Mobility of Nodes:

    Mobility of nodes is not a mandatory requirement.

  • Size of the Network:

    The number of nodes in a sensor network can be much larger than that in a typical ad hoc wireless network.

  • Density of Deployment:

    The density of nodes in a sensor network varies with the domain of application for eg: military application require high availability of the network, making redundancy a high priority.

  • Power Constraint:

    The power constraint in sensor network are much more stringent than those in ad hoc wireless network.




    Figure: 1.1 : Introduction

    When the node is moving along with the central coordinator cluster point and it will also validate the authentication of the each node. Fig: 1.1 illustrates the above mechanism. Then the selected CH node sensor will transfer the energy for the required moving enabled agitate objects. This is because the sensor nodes are expected to operate in harsh environmental or geographical conditions, with minimum or no human supervision and maintenance. The different applications are listed below:

    • Military and national security

    • Environment monitoring

    • Medical application


      It reduces control overhead as this scheme does not require flooding.It saves the energy consumption through various techniques.The algorithm proposed in this paper provides a stronger coverage through maintaining a global knowledge at the base station, which in turn ensures that all nodes are

      reachable through connected cluster heads.[1]In this paper aims at bringing a routing protocol called OEERP (Optimized Energy Efficient Routing Protocol), which aims at improving the lifetime of the WSN because of its uniform battery drain of the nodes and no node depends on beacon based transmissions for long time to reach the access point.[2].In this paper, an Application-aware Threshold-based Centralized Energy Efficient Clustering (ATCEEC) protocol assumes that each wireless node is capable of sensing two types of environment dynamics; temperature and humidity.[4]Simulation results show that this yields maximum network lifetime and stability period as compared to the selected protocols.


        The prime consent here is to optimize distance and energy in a Wireless Sensor Network where the mobility of the nodes during transmission of data leads to energy loss. In order to counteract with this problem we use various protocols to reduce the energy consumption and increase the lifetime of sensor nodes powered by a battery in homogeneous network. An inefficient use of the available energy leads to poor performance and short lifetime of the network. To end this, energy in these sensors is a scarce resource and must be managed in an efficient manner.


        To find a solution for the problem statement mentioned above we propose the following three modules: Clustering Mechanism, Comparison Mechanism, Transmission Mechanism.

        Clustering Mechanism

        Understanding existing clustering algorithms and finding the problems stated are addressed as Grouping of similar objects or sensors in our context,Distance or proximity,Logical organization scalability,Types of clustering,Dynamic:changing network parameter ,Single hop and multi hop, Homogenous. To record and observe the energy levels and distance between sensors and to formulate a mathematical relationship between energy and distance. Problem statement with respect to clustering says that a set of nodes, identify set of CHs that cover the entire network

        One node-one cluster

  • Node-cluster head as a single hop

  • CH-CH : multi hop using routing protocol

    Figure:3.1.1:Sensor information forwarding without clustering ina single hop and multi hop network.

    Transmission Mechanism

    To transmit data amongst sensors in a cluster and to transmit data between the cluster head of a particular cluster and the BS. The transmission of data between the cluster heads are Monitored and the above mentioned mechanism is done using an optimal energy efficient routing protocol. The following are the some of the protocols available.

  • Location Based Routing :

  1. Geographical adaptive fidelity(GAF)Network divided into zones ,Only one node is awake in each zone then the rest are in sleep mode.

  2. Conserve Energy By Turning Off Unnecessary Nodes by Increasing the network lifetime.

    Figure:3.1.2: Sensor information forwarding with clustering ina single hop and multi hop network.

    • Routing Protocol :

      The list of routing protocols are given below , 1.Multi Path Routing

      Increases fault tolerance Sophisticated case:have back

      up paths 2.Quary- Based Routing

      Query transmitted and the data is sent back

  3. Negotiation-Based Routing High level data description

    Elimination of redudant data transmission 4.Qos-Based Routing

    Balance between data quality and energy consumption

    • Energy Management Issues

Actuation energy is the highest priority one in the parameter of Strategy: ultra-low-power sentinel nodes , Wake-up or command movement of mobile nodes .The Communication energy is the next important issue is Strategy: energy aware data communication and an adapt the instantaneous performance to meet the timing and error rate constraints while minimising energy/bit. [7]As we landed with the emergece world, the mobile usage is important rather than others. But with the mobile networks the battery backup is a huge bottleneck. In this paper I am focusing the energy in wireless censor networks with the grouped customers based on the clustering algorithm. These notes are going to get energy level based on their group value. [5]For an example a

particular node is higher prior than other notes then it will be regained energy fast. It has been adapted by censor networks is going to work with the central coordinator when the node is moving along with the central coordinator cluster point and it will also validate the authentic ion of the each node.


The model developed will be simulated in Ns2. NS-2 is a discrete event simulator developed in C++.NS-2 is one of the most popular non-specific network simulators, and supports a wide range of protocols in all layers. It uses Tcl as configuration and script interface. NS-2 is the paradigm of reusability.[6] The below parameters are considered for the evaluation.




Network dimension

800m x 600m

Number of sensor nodes


Initial energy

1 Joule

Data packet size

500 byte

Broadcast packet size

25 byte

Data frames



1 Mbps

Energy transceiver electron

50 nJ/bit

Energy transmission in free-space

10 pJ/bit/m^2

Energy transmission in multi-path

0.0013 pJ/bit/m^4

Transmission range

150 m

Sensing range

70 m

Table 4.1 :Evaluation Parameters

It provides the most complete support of communication protocol models, among non-commercial packages. Regarding WSN, NS-2 includes ad-hoc and WSN specific protocols such as directed diffusion or SMAC. Also, several projects intend to provide WSN support to NS-2 such as SensorSim and NRL. Both are extensions of NS-2 to support WSN modeling. However, Sensors seems to be no longer available at SensorSim.NS-2 can comfortably model wired network topologies up to 1,000 nodes or above with some optimizations. A disadvantage of NS-2 is that it provides poor graphical support, via Nam. This application just reproduces a NS-2 trace.NS-2 has been an essential testing tool for network research and, so, one could expect that the new conventional protocols will be added to future releases.


In WSNs, there are many constraints which affect its uses in various applications. A long lifetime of the network is very important for good results. In our project we present a clustering routing protocol which could be used to optimise energy and also increase the lifetime of network. Although there are many routing protocols based on mode of functioning and type of target application. To name a few egories are location based, data-centric, hierarchical, mobility based, multipath and QoS based. We aim to build a network model based on power levels so as to save energy. The network model is being developed. The mathematical formula for choosing the cluster head is being worked on. The model developed will be simulated in Ns2.


  1. Jitender Grover, Shikha, Mohit Sharma, Location Based Protocols in Wireless Sensor Network, Department of Computer Science and Engineering, M.M. University, Sadopur, Ambala, India, July2014.

  2. Mariam Alnuaimi, Khaled Shuaib, Klaithem Alnuaimi and Mohammed Abed- Hafez, Clustering in WSN Based on Node Ranking, College of Information and Technology, UAEU, College of Engineering, Electrical Engineering Department, UAEU.

  3. K. Kishan Chand, P Vijaya Bharati and B. Seetha Ramanjaneyulu,Optimized Energy Efficient Routing Protocol for Life- Time Improvement in Wireless Sensor Networks, Bapatla Engineering College, Bapatla, India.

  4. N. Javaid, M. Aslam, K. Djouani, Z. A. Khan, T. A. Alghamdi, ATCEEC: A New Energy Efficient Routing Protocol for Wireless Sensor Networks, COMSATS Institute of Information Technology, Islamabad, Pakistan, 2014.

  5. Charles E. Perkins and Pravin Bhagwat,Highly Dynamic DistanceDestination-Sequenced-Vector Routing, Volume 24, Issue4 (October 1994) Pages: 234 – 244 Year of Publication: 1994ISSN: 0146-


[6]P. Jacquet, P. Muhlethaler, T. Clausen, A. Laouiti, A. Qayyum and L.Viennot, Optimized Link State Routing Protocol for Ad- hocNetworks, Multi Topic Conference, 2001. IEEE INMIC 2001, Technology for the 21st Century. Proceedings. IEEE International. Issue Date: 2001.

[7] Radhika D. Joshi and Priti P. rege, Distributed Energy Efficient Routing in Ad-hoc Networks, in 978-1-4244-3328-5/08 in IEEE

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