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| Wireless Sensor
Networks |
Dr. Wook Choi
Telecommunication Network R & D
Samsung Electronics
Seoul, South Korea
Email: to.choi@samsung.com
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| Abstract: |
The rapid advancement of Micro Electro Mechanical Systems (MEMS) and wireless
communications technologies based on short-range radio, have shered the
advent of highly sophisticated sensors. Such sensors are being equipped
with data processing, wireless communication, and sensing units such that
they are not only capable of cooperating autonomously with each other
to form a wireless network, but also invoking appropriate actions in other
devices for a specific situation. Wireless sensor networks (WSNs) will
play a key role in collecting essential information required for future
context-aware computing environments. WSNs are characterized by high node
density and highly limited resources such as communication bandwidth,
energy, storage, and computational capability. Such networks can be deployed
both indoors and outdoors, substituting for our sensory organs in inaccessible
or inhospitable areas, for a variety of applications like environment
or equipment monitoring, smart homes/spaces, intrusion detection, and
surveillance, and chemical/biological monitoring, and so on. All the sensors
collaborate to maximize the overall network performance while fulfilling
a given task. The sensor behavior may be updated by sending a new task
specification on-demand basis. Thus, WSNs are application (task)-specific
information gathering platforms where sensors are required to sense their
vicinity continuously, consuming highly limited resources such as energy
which may not often be relenishable. Therefore, an important issue in
sensor networks is to design energy-aware algorithms and protocols that
optimize energy consumption to maximize the network lifetime while meeting
the user specific requirements such as coverage and data reporting latency.
This implies that the designed algorithms and protocols must also be application-aware.
This tutorial is intended for anyone interested in wireless sensor networks
with a general background in computer networking. Especially, this is
for students who wish to pursue research in the field of sensor networks.
We will first present an overview of WSNs and provide the fundamental
technologies and research issues in this domain. Then, we will address
in details the importance of application-aware algorithm and protocol
design paradigm in terms of network longevity and discuss several
existing approaches. Finally, the tutorial will outline several directions
for further research in the area.
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| Tentative
Topics: |
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Introduction to Wireless Sensor Networks (WSNs) |
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- Role of WSNs in next generation network environment |
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- Fundamental technologies and issues |
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- WSN Applications |
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| 2. |
Application-aware algorithm and protocol design paradigm |
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- Why is application-awareness required? |
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- Existing appliction-specific sensor control schemes |
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- Limitations of the existing schemes |
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| 3. |
Research Directions |
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- How to make WSNs widely available? |
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- WSN research in industry |
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- Commercial WSN Solutions |
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Biography: |
Dr. Wook Choi is is a senior engineer at Telecommunication Networks R&D
Center in Samsung Electronics, Seoul, Korea. He received B.S. degree in
computer science from the University Of Inchon, Korea, in 1994. He worked
in Korea before pursuing M.S. and Ph.D. degrees in Computer Science and
Engineering in 2001 and 2005, respectively, from the University of Texas
at Arlington. He received Outstanding M.S. Thesis and Ph.D. Dissertation
Awards from UTA. His research interests include wireless mesh networks,
ad hoc and sensor networks, mobile and pervasive computing, multi-radio
access protocols.
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