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Wireless Sensor NetworkEE400 Term Project

Prepared by,Khaled Al-Omar 211805Fahad Al-Jabarti 241980

References

[1] Yingshu Li, My T.Thai, Weili Wu, “Wireless Sensor Networks and Applications”, 2008. 

[2] Kazem S., Daniel M., Taieb Z., “Wireless Sensor Networks: Technology, Protocols and Applications”, 2007. 

[3] Carlos Pomalaza-Ráez , “ Wireless Sensor Networks”, University of Oulu, Finland, 2004. 

[4] Mikio Takaziwa, “Survey: Wireless Sensor Network (WS)”, Senior Capstone Seminar, 2008.[5] Katia Obraczka, “Toturial: WSN”, University of California, May 2006

 [6] Matthias Handy, “Routing in Wireless Sensor Network”, University of Rostock

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Motivation

Monitor some phenomena in a far away location ?

Monitor some event in a highly dangerous location ?

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Wireless Sensor Network (WSN)

Solution

Source [3]

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Outline1 Sensor Nodes

- Components

2 Communication Architecture

- Layered or Clustered

3 Physical Layer

- Different Wireless Technologies

4 MAC Layer

- SMAC and TMAC

5 Network Layer

- Hierarchical Vs. Location-Based

6 Applications

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Sensor Node

Sensor nodes components:

1) Sensing Unit

2) CPU

3) Transceiver

4) Battery

Low-Power & Low-Cost

Source [3]

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Communication Architectures

There are two types of communications architectures depending on application:

Layered Clustered

Source [5]

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Physical Layer• Use available Wireless Protocols:

• Radio Frequency : ISM Band 433MHz to 2.4GHz• Modulation : Phase-Shift Keying

• BPSK or MPSK

• Data Rate : 0.25 Mbps to 54 Mbps

Source [2]

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Data Link LayerMedium Access Control (MAC) Protocols:

- Sensor-MAC (SMAC):

- periodic listen & sleep

- collision avoidance

- Timeout-MAC (TMAC):

- enhance the energy savings in SMAC

Source [1]

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Network Layer

Two Types of Routing Algorithms:

1) Hirarchical Routing Protocols:Low-Energy Adaptive Clustering Hierarchy (LEACH)

 2) Location-Based Routing Protocols:Geographical Adaptive Fidelity (GAF)

Source [2]

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Applications

Many Fields

Healthcare Applications Military Purposes Environmental Monitoring

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Big Picture of WSN

Thank you

Source [4]