Wireless sensor networks introduction

1. By
Lokanath Reddy
Wireless Sensor Network
Security Issues

2. Table of Contents:
Introduction
Data aggregation
Security issues
Applications
Future scope
Conclusion

3. Introduction:
 Large number of sensor node devices spread over a large field.
 Wireless sensing + Data Networking.

4. Introduction:
 Low power devices
 Consists of- one or more sensors, a processor, memory, a power supply.
 Formed by hundreds or thousands of nodes.

5. Data aggregation:
 In wireless sensor network the numbers of sensors are
very large.
 the processing of data will need the battery
consumption gets increased
 The solution is the minimizing the data. Here the data
minimization will do by the data aggregation.
 The main goal of data aggregation algorithms is to
gather and aggregate data in an energy efficient
manner so that network lifetime is enhanced.

6. Data aggregation:

7. Security Issues:
 Limited Resources
– All security approaches require a certain amount
of resources for the implementation.
– Resources are very limited in a tiny wireless
sensor.
 Limited Memory
– Sensor is a small in size so that the storage
capacity of data is also small.
– In wireless sensor devices have the limited
memory.

8. Security Issues:
 Power consumption
– In sensor network sensing is the higher priority
task.
– This process always in execution so that there is
a need of high performance battery.
 Unreliable transfer
– Wireless sensor network uses the the
connectionless routing.
– The possibility of channel error rate may
increase.

9.  Process Management
– A military example is the use of sensors detect
enemy intrusion.
 Health care monitoring
– Body-area networks can collect information about
an individual's health, fitness.
 Environmental/Earth sensing
– Air pollution monitoring
– Water quality monitoring
ApplicationsApplications:

10. Future scope:
 Everything on Internet
 Everybody on Internet
 Technology to
– interconnect individual smart devices
– Enable access to information about the real world

11. Future scope:

12. Conclusion
 The sensor network uses the huge number of sensor
devices. Due to sensing device each node need to process
the data.
 When there is a processing then energy loss will happen.
To reduce the energy loss data aggregation can apply.

13. Thank You!