an introduction table of context sensor network previewrouting in sensor networksmobility in sensor...
TRANSCRIPT
WIRELESS SENSOR NETWORKS An Introduction
Table Of Context
Sensor Network Preview
Routing in Sensor Networks
Mobility in Sensor Networks
•Structure and characteristics of nodes and data flow.
•Protocols and Algorithms
•Different types of mobility
SENSOR NETWORKS PREVIEW
Sensor Networks Preview
A wireless sensor network (WSN) is a wireless network consisting of spatially distributed autonomous devices using sensors to cooperatively monitor physical or environmental conditions, such as temperature, sound, vibration, pressure, motion or pollutants, at different locations
•Definition•Application•Design Factors
Sensor Nodes
They are used in commercial and industrial applications to monitor data that would be difficult or expensive to monitor using wired sensors.
ApplicationMilitary
Environment
Health Care
Home
Design Factors
Make a statement with great looking graphics. PowerPoint makes it easy to produce visuals that used to require multiple applications to accomplish. Easily apply soft shadows, reflections, glows, bevels, 3D and more!
Fault Tolerant
Scalability
Production Cost
Tech Constraint
Topology Stability
Power Consumption
ROUTING IN SENSOR NETWORKS
Routing in Sensor Networks
•Characteristics•Routings
• Having no specific address, we can not use Internet Protocol.
•Special data flow model
•Redundant data
•Lack of power, energy, memory and processing, needs management.
Data Centric
Network Flow Model
Location Based
Hierarchical
Routing Protocols
An Example
B
A
S E
F
H
C
G
I
Represents a node that has received data for D from S
D
Continued.
B
A
S E
F
H
C
G
I
Represents transmission
Broadcast transmission
D
Continued.
B
A
S E
F
H
C
G
I
Represents links on Reverse Path
D
Continued.
B
A
S E
F
H
DC
G
I
• Node C receives from G and H, but does not forward it again, because node C has already forwarded once
Continued.
B
A
S E
F
H
DC
G
I
Represents links on path
MOBILITY IN SENSOR NETOWRKS
Controlled Mobility
Mobile Object
HW or SW Mobility
Semi Fault Mobility
Mobility Categories
Controlled Mobility• Replacement
• Adaptive Sampling
• Network Repairing
• Power Gain
Mobile Object
• Central Node Mobility
• Event Mobility
• Base Node Mobility
• Full Node Mobility
Hardware Software Mobility
• Code Infection:
Using a virtual machine with high level instructions.
• Software Agent:
An agent spreads in network and executes its
duties on
every single node.
Semi Fault Mobility
• Obstacle Movement
• Node Failure
Both made graph disconnected.
SARA MAHDAVI HEZAVEIAMIRHOSEIN SHANTIA
[NAY07] ،ع.نايبي، "تحمل پذيری حرکت در شبکه های بی سيم"، رساله دکترا1386دانشگاه صنعتی شريف،
[AKY02] L. F. AKYILDIZ W. SU, Y. SANKARASUBRAMANIAM, E. CAYIRCI., “WIRELESS SENSOR NETWORKS: A SURVEY”, COMPUTER
NETWORKS, VOL. 38, PP. 393-422, MARCH 2002.
[MIN01] R. MIN, ET AL., “LOW POWER WIRELESS SENSOR NETWORKS", IN PROCEEDINGS OF INTERNATIONAL CONFERENCE
ON VLSI DESIGN, BANGALORE, INDIA, JANUARY 2001.
[PAT06] A. PATOOGHI, M. FAZELI, “A SURVEY ON ROUTING ALGORITHMS IN WIRELESS SENSOR NETWORKS,” TECHNICAL
REPORT, DEPENDABLE SYSTEMS LABORATORY, SHARIF UNIVERSITY OF TECHNOLOGY, 2006.
[RAB00] J.M. RABAEY, ET AL., “PICORADIO SUPPORTS AD HOC
ULTRA LOW POWER WIRELESS NETWORKING," IEEE COMPUTER, VOL. 33, PP. 42-48, JULY 2000.
[TIL02] S. TILAK ET AL., “A TAXONOMY OF WIRELESS MICROSENSOR NETWORK MODELS,” IN ACM MOBILE COMPUTING
AND COMMUNICATIONS REVIEW (MC2R), JUNE 2002.[WIK]WWW.WIKIPEDIA.COM
[IEEE]WWW.COMPUTER.ORG