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IOSR Journal of Computer Engineering (IOSR-JCE)
e-ISSN: 2278-0661,p-ISSN: 2278-8727, Volume 17, Issue 5, Ver. IV (Sep. – Oct. 2015), PP 42-47
www.iosrjournals.org
DOI: 10.9790/0661-17544247 www.iosrjournals.org 42 | Page
Maximizing Wireless Sensor Networks Life Time through Sink
Mobility
Prof.Geeta Patil
Department of Computer Science & Engg,BKIT, Bhalki-585328
Abstract: The main objective of this paper is to optimise wireless sensor network life time by moving the sink
to a finite number of locations. If any node is having energy less than minimum, that node is not considered in
communication path then alternate path is created by routing algorithm AODV. Information gathered by mobile
sink can reduce the energy consumption of sensor nodes by reducing multihop communication, automatically
network lifetime is improved.
Key words: Sensor, mobility, AODV, Routing, Energy, Optimization, Dimension., Protocol.
I. Introduction
A.What is Wireless Sensor Network?
Wireless sensor node (simply sensor node) consists of sensing, computing, communication, actuation,
and power components. These components are integrated on a single or multiple boards, and packaged in a few
cubic inches.WSN usually consists of tens to thousands of such nodes that communicate through wireless
channels for information sharing and cooperative processing.The basic philosophy behind WSNs is that, while
the capability of each individual sensor node is limited .
B. What is the Problem existing in the current application?
Existing energy-conserving routing. The protocols aim at balancing the energy consumption instead of
minimizing the absolute consumed power. The mobile sink approach, by further involving mobility, increases
the dimension of such optimization problems.
C. What is the solution?
So to solve above mentioned problem , a framework has built is to optimising wireless sensor network
life time by moving the sink to a finite number of locations. If any node is having energy less than minimum,
that node is not considered in communication path then alternate path is created by routing algorithm AODV.
Information gathered by mobile sink can reduce the energy consumption of sensor nodes by reducing multi hop
communication, automatically network lifetime is improved. Initially it is developed to solve the problem
involving a single sink, then we generalized this to approximate the original problem involving multiple sinks.
II. Design & Implementation
A).Design steps:
Sensor node wants to send data packet to sink node by moving sinks to the finite set of location
Algorithm: Node has information or Data packet
Step 1: First select a sensor nodes and make them as active by initializing active =1.
Step 2: Set up a Sink Node and initialize to 0.
Step3: Find Route from source node to sink node using AODV routing, protocol, a Hello packets are exchanged
between them by sending RREQ to the Sink Node. If the path has found, then sink node sends RREQ in the
same path.
Step 4: The Sensor Nodes senses the data.
Step 5: Sink nodes gather the information from neighbouring sensor nodes .
Step 6: If any Sensor node is having Energy less than minimum value (Threshold) then Calculate the battery life
and drop that node, by passing Sensor node, again find route.
Step 7: If the Sensor nodes having energy larger than minimum value(Threshold) forward the data packet and
calculate the battery life.
Step 8:Sink node will stay in the current position and gather the information till specified pausetime.After
completion of the specified pause time sink node moves to the new location in the network.
Step 9:Repeat step 1,still simulation time is over.
Step 10.End of the algorithm.
Maximizing Wireless Sensor Networks Life Time Through Sink Mobility
DOI: 10.9790/0661-17544247 www.iosrjournals.org 43 | Page
B. Methodology
Functioning of the proposed sensor networks is given by.
Application Layer.
All the sensor nodes which are active are start sending or generating data, Sink node is equated to 0 ,to
send data from current source node to destination node. The sensor will check if route exist to the destination or
not , if route exists it will start sending a data if not there it will generate route request message .
Physical Layer Energy Model
Energy is a phenomenon of physical layer and energy loss due to transmission and reception is much
higher than that of idle time energy loss. Therefore in this project we assume that one unit energy is lost for
every packet reception and three units of energy at the transmission time i.e.,when packet arrives from MAC
layer node energy is given by.
Energy=Energy-loss
Energy Optimization through Mobility
The condition for mobility is that a sink move in such a point randomly in the network where at least
one sensor is present and no other sink is present. A pause time is the time period for which a node waits in its
current position before moving again.
C). The implementation depicts wireless sensor network that consists .
-Sink without mobility.
-Sink with mobility.
-Multiple sinks with mobility.
A snapshot of the simulation scenario is shown in Figures. Every sensor in the network is assigned a
defined transmission power . we assume that one unit energy is lost for every packet reception and three units
of energy at the transmission time i.e.,when packet arrives from MAC layer energy is given by.
Energy=Energy-loss.
III. Interpretation Of Results
A .Sink without Mobility
Sink in the middle and sensor nodes are across it
Maximizing Wireless Sensor Networks Life Time Through Sink Mobility
DOI: 10.9790/0661-17544247 www.iosrjournals.org 44 | Page
Radio links established
B .Sink with Mobility
Initial network structure
Sink node at Position 1.
Sink node at position 2
Maximizing Wireless Sensor Networks Life Time Through Sink Mobility
DOI: 10.9790/0661-17544247 www.iosrjournals.org 45 | Page
C . Multiple Sinks with Mobility
Initial Network Structure
Sink nodes at position1
Sinks nodes at position2
Maximizing Wireless Sensor Networks Life Time Through Sink Mobility
DOI: 10.9790/0661-17544247 www.iosrjournals.org 46 | Page
Final Result of Simulation
D.GRAPHS
0
2
4
6
8
10
12
60 70 80 90 100 110 120
ThroughPutinMBPS
Nodes
SINGLE_SINK_STABLE
SINGLE_SINK_MOBILE
MULTI_SINK_MOBILE
Figure 5.4: Nodes v/s Throughput
0
20
40
60
80
100
120
60 70 80 90 100 110 120
PacketDeliveryRatio
Nodes
SINGLE_SINK_STABLE
SINGLE_SINK_MOBILE
MULTI_SINK_MOBILE
Figure 5.5: Nodes v/s Packet Delivery Ratio
Maximizing Wireless Sensor Networks Life Time Through Sink Mobility
DOI: 10.9790/0661-17544247 www.iosrjournals.org 47 | Page
0
10
20
30
40
50
60
70
80
90
100
60 70 80 90 100 110 120
LifeTimeinSec
Node
MULTI_SINK_MOBILE
SINGLE_SINK_MOBILE
SINGLE_SINK_STABLE
Figure 5.6: Nodes v/s Network Life Tim
IV. Applications
 Area monitoring
 Environmental monitoring
-Air pollution monitoring
-Forest fires detection
-Greenhouse monitoring
-Landslide detection
 Industrial monitoring
 Agriculture etc.
V. Conclusion And Future Enhancements
This paper explains that how the energy conservation can be reduced by moving the sinks in a planned
way therefore subsequently distributing the power consumption across the networks. Initially problem is solved
by involving a single sink, then generalized this to approximate the original problem involving multiple sinks.
Finally, the results demonstrate that network lifetime can be significantly improved using this technique and
also results in better packet delivery ratio and low bit error rate.
Further it can be used for node maintenance protocol (battery replacing or recharging for sensor
nodes).The protocol can be extensible to any sensor architecture. This design work considered static sensor
nodes but same can be extended for dynamic (moving) nodes as well.
References
[1]. Suyoung Yoon; Dutta, R.; Sichitiu, M.L.; North Carolina State Univ., Raleigh –“Power Aware Routing Algorithms for Wireless
Sensor Networks”, Wireless and Mobile Communications, 2007. ICWMC '07. Third International Conference , ISBN: 0-7695-
2796-5.
[2]. Archan Misra, Suman Banerjee-MRPC: Maximizing Network Lifetime for Reliable Routing inWireless Environments, IBM
T.J. Watson Research Center 30 Saw Mill River Road Hawthorne, NY 10532, USA
[3]. Katja Schwieger, Amrit Kumart XGeIrh ard Fettweis- On the Impact of the Physical Layer on Energy Consumption in Sensor
Networks, *Vodafone Chair Mobile Communications Systems Dresden University of Technology, Mommsenstr. 18, D-
01062 Dresden, Germany. Indian Institute of Technology (IIT), Guwahati, 690799, India
[4]. Li-Hsing Yen, Ming-Zhou Cai, Yang-Min Cheng, and Ping-Yuan Yang- Minimizing Energy Expense for Chain-Based
Data Gathering in Wireless Sensor Networks , Department of Computer Science and Information Engineering
ChungHua'University,Taiwan300, R.O.C.[Conference name]
[5]. Chen Avin and Gunes Ercal-Bounds on the Mixing Time and Partial Cover of Ad-Hoc and Sensor Networks, Computer Science
Department University of California, Los Angeles Los Angeles, CA 90095-1596, USA.
[6]. Erdal Cayrrci, Tolga Caplii, &lem Emiroglu - Power Aware Many to Many Routing in Wireless Sensor and Actuator
Networks, Sensors, Actuators and Networking Laboratory Istanbul TechnicaI University
[7]. W. Liang, J. Luo, and X. Xu, “Prolonging Network Lifetime via a Controlled Mobile Sink in Wireless Sensor Networks,” in IEEE
Global Telecommunications Conference (GLOBECOM 2010). IEEE, Dec.2010.
[8]. Z. Wang, S. Basagni, E. Melachrinoudis, and C. Petrioli, “Exploiting Sink Mobility for Maximizing Sensor Networks Lifetime,” in
Proceedings of the 38th Annual Hawaii International Conference on System Sciences (HICSS 2005).[6] Vinay Kumar Singh and
Vidushi Sharma, “Elitist Genetic Algorithm based Energy Efficient Routing Scheme for Wireless Sensor Networks”, International
Journal of Advanced Smart Sensor Network Systems, Vol. 2, No. 2, pp. 15-21, 2012.
[9]. Snehal Sarangi and Biju Thankchan, “Particle Swarm Optimization based A Novel Routing Algorithm for Wireless Sensor
Network”, International Journal of Research in Engineering, Information Technology and Social Sciences, Vol. 2, No. 11, 2012 .
[10]. Amol P. Bhondekar, Renu Vig, Madan Lal Singla, C. Ghanshyam and Pawan Kanpur, “Genetic Algorithm Based Node Placement
Methodology for Wireless Sensor Networks”, Proceedings of the International MultiConference of Engineers and Computer
Scientists, Vol. 1, 2009.

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F017544247

  • 1. IOSR Journal of Computer Engineering (IOSR-JCE) e-ISSN: 2278-0661,p-ISSN: 2278-8727, Volume 17, Issue 5, Ver. IV (Sep. – Oct. 2015), PP 42-47 www.iosrjournals.org DOI: 10.9790/0661-17544247 www.iosrjournals.org 42 | Page Maximizing Wireless Sensor Networks Life Time through Sink Mobility Prof.Geeta Patil Department of Computer Science & Engg,BKIT, Bhalki-585328 Abstract: The main objective of this paper is to optimise wireless sensor network life time by moving the sink to a finite number of locations. If any node is having energy less than minimum, that node is not considered in communication path then alternate path is created by routing algorithm AODV. Information gathered by mobile sink can reduce the energy consumption of sensor nodes by reducing multihop communication, automatically network lifetime is improved. Key words: Sensor, mobility, AODV, Routing, Energy, Optimization, Dimension., Protocol. I. Introduction A.What is Wireless Sensor Network? Wireless sensor node (simply sensor node) consists of sensing, computing, communication, actuation, and power components. These components are integrated on a single or multiple boards, and packaged in a few cubic inches.WSN usually consists of tens to thousands of such nodes that communicate through wireless channels for information sharing and cooperative processing.The basic philosophy behind WSNs is that, while the capability of each individual sensor node is limited . B. What is the Problem existing in the current application? Existing energy-conserving routing. The protocols aim at balancing the energy consumption instead of minimizing the absolute consumed power. The mobile sink approach, by further involving mobility, increases the dimension of such optimization problems. C. What is the solution? So to solve above mentioned problem , a framework has built is to optimising wireless sensor network life time by moving the sink to a finite number of locations. If any node is having energy less than minimum, that node is not considered in communication path then alternate path is created by routing algorithm AODV. Information gathered by mobile sink can reduce the energy consumption of sensor nodes by reducing multi hop communication, automatically network lifetime is improved. Initially it is developed to solve the problem involving a single sink, then we generalized this to approximate the original problem involving multiple sinks. II. Design & Implementation A).Design steps: Sensor node wants to send data packet to sink node by moving sinks to the finite set of location Algorithm: Node has information or Data packet Step 1: First select a sensor nodes and make them as active by initializing active =1. Step 2: Set up a Sink Node and initialize to 0. Step3: Find Route from source node to sink node using AODV routing, protocol, a Hello packets are exchanged between them by sending RREQ to the Sink Node. If the path has found, then sink node sends RREQ in the same path. Step 4: The Sensor Nodes senses the data. Step 5: Sink nodes gather the information from neighbouring sensor nodes . Step 6: If any Sensor node is having Energy less than minimum value (Threshold) then Calculate the battery life and drop that node, by passing Sensor node, again find route. Step 7: If the Sensor nodes having energy larger than minimum value(Threshold) forward the data packet and calculate the battery life. Step 8:Sink node will stay in the current position and gather the information till specified pausetime.After completion of the specified pause time sink node moves to the new location in the network. Step 9:Repeat step 1,still simulation time is over. Step 10.End of the algorithm.
  • 2. Maximizing Wireless Sensor Networks Life Time Through Sink Mobility DOI: 10.9790/0661-17544247 www.iosrjournals.org 43 | Page B. Methodology Functioning of the proposed sensor networks is given by. Application Layer. All the sensor nodes which are active are start sending or generating data, Sink node is equated to 0 ,to send data from current source node to destination node. The sensor will check if route exist to the destination or not , if route exists it will start sending a data if not there it will generate route request message . Physical Layer Energy Model Energy is a phenomenon of physical layer and energy loss due to transmission and reception is much higher than that of idle time energy loss. Therefore in this project we assume that one unit energy is lost for every packet reception and three units of energy at the transmission time i.e.,when packet arrives from MAC layer node energy is given by. Energy=Energy-loss Energy Optimization through Mobility The condition for mobility is that a sink move in such a point randomly in the network where at least one sensor is present and no other sink is present. A pause time is the time period for which a node waits in its current position before moving again. C). The implementation depicts wireless sensor network that consists . -Sink without mobility. -Sink with mobility. -Multiple sinks with mobility. A snapshot of the simulation scenario is shown in Figures. Every sensor in the network is assigned a defined transmission power . we assume that one unit energy is lost for every packet reception and three units of energy at the transmission time i.e.,when packet arrives from MAC layer energy is given by. Energy=Energy-loss. III. Interpretation Of Results A .Sink without Mobility Sink in the middle and sensor nodes are across it
  • 3. Maximizing Wireless Sensor Networks Life Time Through Sink Mobility DOI: 10.9790/0661-17544247 www.iosrjournals.org 44 | Page Radio links established B .Sink with Mobility Initial network structure Sink node at Position 1. Sink node at position 2
  • 4. Maximizing Wireless Sensor Networks Life Time Through Sink Mobility DOI: 10.9790/0661-17544247 www.iosrjournals.org 45 | Page C . Multiple Sinks with Mobility Initial Network Structure Sink nodes at position1 Sinks nodes at position2
  • 5. Maximizing Wireless Sensor Networks Life Time Through Sink Mobility DOI: 10.9790/0661-17544247 www.iosrjournals.org 46 | Page Final Result of Simulation D.GRAPHS 0 2 4 6 8 10 12 60 70 80 90 100 110 120 ThroughPutinMBPS Nodes SINGLE_SINK_STABLE SINGLE_SINK_MOBILE MULTI_SINK_MOBILE Figure 5.4: Nodes v/s Throughput 0 20 40 60 80 100 120 60 70 80 90 100 110 120 PacketDeliveryRatio Nodes SINGLE_SINK_STABLE SINGLE_SINK_MOBILE MULTI_SINK_MOBILE Figure 5.5: Nodes v/s Packet Delivery Ratio
  • 6. Maximizing Wireless Sensor Networks Life Time Through Sink Mobility DOI: 10.9790/0661-17544247 www.iosrjournals.org 47 | Page 0 10 20 30 40 50 60 70 80 90 100 60 70 80 90 100 110 120 LifeTimeinSec Node MULTI_SINK_MOBILE SINGLE_SINK_MOBILE SINGLE_SINK_STABLE Figure 5.6: Nodes v/s Network Life Tim IV. Applications  Area monitoring  Environmental monitoring -Air pollution monitoring -Forest fires detection -Greenhouse monitoring -Landslide detection  Industrial monitoring  Agriculture etc. V. Conclusion And Future Enhancements This paper explains that how the energy conservation can be reduced by moving the sinks in a planned way therefore subsequently distributing the power consumption across the networks. Initially problem is solved by involving a single sink, then generalized this to approximate the original problem involving multiple sinks. Finally, the results demonstrate that network lifetime can be significantly improved using this technique and also results in better packet delivery ratio and low bit error rate. Further it can be used for node maintenance protocol (battery replacing or recharging for sensor nodes).The protocol can be extensible to any sensor architecture. This design work considered static sensor nodes but same can be extended for dynamic (moving) nodes as well. References [1]. Suyoung Yoon; Dutta, R.; Sichitiu, M.L.; North Carolina State Univ., Raleigh –“Power Aware Routing Algorithms for Wireless Sensor Networks”, Wireless and Mobile Communications, 2007. ICWMC '07. Third International Conference , ISBN: 0-7695- 2796-5. [2]. Archan Misra, Suman Banerjee-MRPC: Maximizing Network Lifetime for Reliable Routing inWireless Environments, IBM T.J. Watson Research Center 30 Saw Mill River Road Hawthorne, NY 10532, USA [3]. Katja Schwieger, Amrit Kumart XGeIrh ard Fettweis- On the Impact of the Physical Layer on Energy Consumption in Sensor Networks, *Vodafone Chair Mobile Communications Systems Dresden University of Technology, Mommsenstr. 18, D- 01062 Dresden, Germany. Indian Institute of Technology (IIT), Guwahati, 690799, India [4]. Li-Hsing Yen, Ming-Zhou Cai, Yang-Min Cheng, and Ping-Yuan Yang- Minimizing Energy Expense for Chain-Based Data Gathering in Wireless Sensor Networks , Department of Computer Science and Information Engineering ChungHua'University,Taiwan300, R.O.C.[Conference name] [5]. Chen Avin and Gunes Ercal-Bounds on the Mixing Time and Partial Cover of Ad-Hoc and Sensor Networks, Computer Science Department University of California, Los Angeles Los Angeles, CA 90095-1596, USA. [6]. Erdal Cayrrci, Tolga Caplii, &lem Emiroglu - Power Aware Many to Many Routing in Wireless Sensor and Actuator Networks, Sensors, Actuators and Networking Laboratory Istanbul TechnicaI University [7]. W. Liang, J. Luo, and X. Xu, “Prolonging Network Lifetime via a Controlled Mobile Sink in Wireless Sensor Networks,” in IEEE Global Telecommunications Conference (GLOBECOM 2010). IEEE, Dec.2010. [8]. Z. Wang, S. Basagni, E. Melachrinoudis, and C. Petrioli, “Exploiting Sink Mobility for Maximizing Sensor Networks Lifetime,” in Proceedings of the 38th Annual Hawaii International Conference on System Sciences (HICSS 2005).[6] Vinay Kumar Singh and Vidushi Sharma, “Elitist Genetic Algorithm based Energy Efficient Routing Scheme for Wireless Sensor Networks”, International Journal of Advanced Smart Sensor Network Systems, Vol. 2, No. 2, pp. 15-21, 2012. [9]. Snehal Sarangi and Biju Thankchan, “Particle Swarm Optimization based A Novel Routing Algorithm for Wireless Sensor Network”, International Journal of Research in Engineering, Information Technology and Social Sciences, Vol. 2, No. 11, 2012 . [10]. Amol P. Bhondekar, Renu Vig, Madan Lal Singla, C. Ghanshyam and Pawan Kanpur, “Genetic Algorithm Based Node Placement Methodology for Wireless Sensor Networks”, Proceedings of the International MultiConference of Engineers and Computer Scientists, Vol. 1, 2009.