wireless sensor network routing protocols.ppt
DESCRIPTION
valuable material for wsn's followersTRANSCRIPT
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Wireless Sensor Network Routing Protocols
Sandeep verma
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Outline Of My Seminar…….
Introduction of WSN. Design Challenges. Application of WSN. Different Types of Routing Protocols. Comparison (Spin,Leach,DD). Comprehensive survey . Objective . References.
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Introduction of WSN
Wireless Sensor networks are a particular type of adhoc network.
WSN formed by a large no of nodes. Nodes:”physical device monitoring a set of physical
variables” ,communicates via a redio channel. Nodes:Internally protocol stack controls communications. WSN can be considered as a particular type of MOBILE AD-HOC
NETWORK(MANET).
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Introduction of WSN(Cont’d)
Architecture of WSN….
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Design challenges
Energy conservation. Unstructured and/or time-varying network
topology. Low quality communications. Resource-constrained computation:
Protocols for ad-hoc networks must strive to provide the desired performance level
in spite of the few available resources.
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Application of WSN….
Ocean temperature monitoring for improved weather forecast .
Intrusion detection . Avalanche prediction . Emergency situation. Industrial application. Automotive.
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Routing Protocol In WSN
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Hierarchical Protocol
Cluster-based routing. Heigher energy nodes can be used to
process and send information and low energy nodes can be used to perform sending.
Low energy consumption with in a cluster by data aggregation and fusion to decrease the number of transmitted message.
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LEACH (low energy adaptive clustering hierarchy)
It is a self organizing adaptive clustering protocol.
Randomly select sensor nodes as cluster heads .
Uses randomization for distributing energy load among the sensors is the networks.
Set up phase & Steady Phase .
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LEACH(Cont’d)
Assumption made in the leach protocol.
a) Nodes transmit enough power to reach base station.
b) Each node has enough computational power.
c) Nodes located close to cach other have correlated data.
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LEACH (Diagram)
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Flat Routing
Each node plays the same role & sensors nodes collaborate together to perform the sensing task.
1) Spin.
2) Direct Diffusion. Use data centric routing ,the sink sends
request and waits for data from sensor nodes.
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SPIN (Sensor protocols for information via negotiation)
SPIN , A data centric routing protocol .
It assumes all nodes in the network are base station.
Nodes in close proximity have similar data.
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SPIN(Cont,d)
The key charactar of SPIN protocol.
All nodes can be assumed as base station and all information is broadcast to cach node in network.
User can query to any node an can get the information immediately.
Nodes in the network use use a high level name to describe their collected data call meta data.
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SPIN (Diagram)
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DD(Direct Diffusion)
Direct Diffusion is a Data Centric and application aware protocol .
Data is generated by sensor nodes is names bt attribute value.
It represents distributed wireless sensor network application .
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Direct Diffusion(Cont’d)
Elements of DD algorithms.
a) Data is named as attribute value pair. b) Sink sends interests are diseminated through out the wsn. c) Disemination sets up gradients . d) Data delivery.
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Direct Diffusion(Diagram)
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Rumor Routing
Rumor Routing is a kind of Direct Diffusion .
It is used for application where geographic route is not feasible .
It combines query flooding and event flooding in a random way .
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Rumor Routing(Cont’d)
Assumptions
a) This network is composed of densely
distributed nodes.
b) Only bi-directional links exits.
c) Only short distance transmission are
allowed
d) Fixed infrastructure.
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Heirarchical vs Flat Routing
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Comprehensive Study Of Routing protocol
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Objective of My Seminar
* Objective of this work is focused towards modifying one of the above routing protocols such that the modified protocol could minimize the energy for the entire system .
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References……
• Heizelman , W,; chandrakasan, A .; Balakrishnan , H.Energy efficient communication protocol.
• Lewis , F.L wireless sensor network.
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End of my Seminer…….
THANKING YOU