a review on wireless sensor network

7/29/2019 A Review on Wireless Sensor Network

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A SURVEY ON WIRELESS SENSOR

NETWORK


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People have a tendency to overestimate

technology in the short term, and

underestimate it in the long term.-- Bill Gates


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NETWORK

In Information Technology-

A network is a series of points or nodes

interconnected by communication paths.

Networks can interconnect with other

networks and contain subnetworks.


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WIRELESS NETWORK

Any type of computer network that is not

connected by cables of any kind.

Method by which Homes,

Telecommunications Networks and

Enterprise (business) installations avoid the

costly process of introducing cables into a

building, or as a connection between various

equipment locations.


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SENSOR NETWORK

A sensor network is a group of specialized transducers(A transducer is an electronic device that converts

energy from one form to another. E.g., Antenna) with a

communications infrastructure intended to monitor and

record conditions at diverse locations.

A sensor network consists of multiple detection

stations called sensor nodes, each of which is small,lightweight and portable. Every sensor node is

equipped with a transducer, microcomputer,

transceiver and power source.


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WIRELESS SENSOR NETWORK

A wireless sensor network (WSN) consists of

spatially distributed autonomous sensors to

cooperatively monitor physical or environmental

conditions, such as temperature, sound, vibration,pressure sound, motion or pollutants.

Wireless sensor networks combine processing,

sensing and communications into tiny embedded

devices.


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MULTI HOP WSN ARCHITECTURE


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HOW IT WORKS


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Integration of WSN with IP based Network

Wireless sensor networks are based on collaborative efforts of

many small wireless sensor nodes, which are collectively able to

form networks through which sensor information can be gathered.

Such networks usually cannot operate in complete isolation, but

must be connected to an external network through which

monitoring and controlling entities can reach the sensor networks.

As TCP/IP, the Internet protocol suite has become the de facto

standard for large scale network, it is quite reasonable to connectwireless sensor networks with TCP/IP network to provide

meaningful services for large number of Internet users.


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SENSOR NETWORKS: EVOLUTION, OPPORTUNITIES AND

CHALLENGES


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The paper presents the:

History of research in sensor networks including the

Distributed Sensor Networks (DSN) and the Sensor

Information Technology (SensIT) programs. Technology trends that impact the development of

sensor networks.

Technical challenges in sensor network development

like new applications include network discovery, controland routing, collaborative signal and information

processing, tasking and querying, and security.


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CONCLUSION

Though the benefits of the sensor network and theirapplications are more limited to the large military

network, the development of new technologies like

MEMS technology, reliable wireless

communication, and low-cost manufacturing haveresulted in small, inexpensive, and powerful

sensors with embedded processing and wireless

networking capability.

Wireless sensor networks can be used in many

new applications, ranging from environmental

monitoring to industrial sensing, as well as


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A SURVEY OF WIRELESS SENSOR NETWORK TECHNOLOGY

I. Khemapech, I. Duncan and A. Miller, School of Computer

Science, University of St Andrews, North Haugh, St

Andrews, Sensors Peterborough NH (2005).


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INTRODUCTION

In This paper the authors provides a survey of

wireless sensor networks technology. Several

research works including sensor network

applications, components, reliable transportprotocols, and congestion control schemes are

summarized and compared in different sections.


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CONCLUSION

Sensor networks are challenging in having to be

small, powerful but with less energy consumption,

as well as accommodating different application

requirements.

Further, the transport protocol plays a major role in

providing end-to-end communication with

congestion control.


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LIMITATIONS

TCP does not seem able to provide reliable data

transport in sensor networks.

A reliable transport protocol with congestion controlcapability for sensor networks is required to be

generic, lightweight, and not dependent upon

existing lower layer protocols.


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A SURVEY OF NETWORK MANAGEMENT ARCHITECTURE

IN WIRELESS SENSOR NETWORK

Mengjie Yu, Hala Mokhtar, Madjid Merabti, School of

Computing and Mathematical Science, Liverpool John

Moores University, 2006.


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INTRODUCTION

This paper is divided in the following Sections:

Present some specific features of WSNs.

Summaries several design issues and

requirements for management architecture. Overview of some features related to future

research approaches.


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CONCLUSION

Wireless sensor network has represented its robust

usage in the future distributed computing

environment.

The unique features of WSNs make the design and

implementation of such management architecture

different from the traditional networks.


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LIMITATION

There is still no particular generic network

management architecture emerged, which can

provide network management independent of

application-specific.


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INTEGRATION OF WSN SERVICES INTO OTHER HOME AND

INDUSTRIAL NETWORKS USING DEVICE PROFILE FOR WEB

SERVICES

Ayman Sleman, Automation and Process Control

Engineering, University of Wuppertal, Wuppertal, Germany

Reinhard Moeller, Automation and Process Control

Engineering University of Wuppertal, Wuppertal, Germany

Authorized licensed use limited to: Guangdong Univ of Tech.

Downloaded on February 9, 2009 from IEEE Xplore.


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INTRODUCTION

Wireless sensor networks (WSN) are becoming more and moreimportant for home and industrial applications, and the need toaccess these networks from other existing networks iscontinuously increasing.

The benefit of WSN will be largest, if the exchange of data

between WSN and other networks is bidirectional and happens insuitable time.

The use of web services, WSDL and SOAP allows developers ofdistributed industrial and home applications to connect deviceswritten in different programming languages and from different

manufacturers with each others. The paper describes how DPWS can be used to provide a secure

model to access a wireless sensor network from other IP-basednetworks.


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CONCLUSION

The paper presented has discussed about the need

and method to integrate wireless sensor networks

into existing IP-based networks. For this the

6LoWPAN is used to connect the wireless sensornetwork with the internet and other IP-based

networks. The DPWS Profile was chosen because

it is suitable for embedded devices in home and

industrial automation.


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OBJECTIVE

Finally, after reviewing the research papers, I observed that there

is a lot of research has been done in the last 3 decades and lotsof research work has been performed and proposed in differentsections/areas of WSN (Wireless Sensor Network), but still thereare some areas where more focus and research work is requiredsuch as:

Data association, when multiple targets are present in a small region.

Congestion Occurrence in Sensor networks, due to unreliable datatransfer.

Requirement of a reliable transport protocol with congestion control

capability.

Design a network management architecture to support WSNs.

Implementation of sensor network in existing IP-based networks withlower cost.


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THANK YOU

a review on wireless sensor network

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