a data dissemination method for supporting mobile sinks in hierarchical routing protocol of wsn apan...
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A Data Dissemination Method A Data Dissemination Method for Supporting Mobile Sinksfor Supporting Mobile Sinks
in Hierarchical Routing Protocol of WSN in Hierarchical Routing Protocol of WSN
APAN 2008
Jieun Cho
4, August, 2008
ContentContent
Introduction
A Data Dissemination Method for Supporting Mobile Sinks in Hierarchical Routing Protocol of WSN
Performance Evaluation
Conclusion
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Introduction(1)Introduction(1)
Design principles:Power efficiencyData-centric nodesData aggregation is not always desirableAttribute-based addressing and location awareness
Energy-efficiency is primary concern.
Mobile sinks…Excessive Power Consumption
Increased Wireless Transmission Collisions
State Maintenance Overhead
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Introduction(2)Introduction(2)
Previous workDirected –diffusion
TTDD (Two Tier Data Dissemination)
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Goal, IdeaGoal, Idea
Goal Efficient data dissemination from multiple source to multiple mobile Sinks
Reducing the number of packets for efficient energy consumption
Supporting mobile nodes
Main ideaUsing a permanent grid structure
Cross-shaped trajectory
Use Cluster concept
Use hybrid routing
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Assumptions and Basic ModelAssumptions and Basic Model
Basic modelMultiple mobile sink nodes exist in the sensor network.
AssumptionsEach sensor node is assumed to be aware of its own geographic location
Sensor nodes remain stationary
Homogeneous sensor nodes are deployed in a wide sensor field.
One-hop communication is used for data transmission between proximate sensor nodes and multi-hop communication for distant sensors.
Each sensor node is aware of its available energy.
Our work Design -1/4Our work Design -1/4
Four 1-level grids are combined into a 2-level grid.
A 2-level grid is provided with an ID
2-level Grid structure
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0,0 1,0
0,11,12, 0, 1
2, 0, 32, 2, 3
2, 2, 1
Our work Design -2/4Our work Design -2/4
Data Announcement and Query Transfer
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Sink
Query Transfer
Source
Data Announcement
2-LevelCluster Header
1-LevelCluster Header
Our work Design -3/4Our work Design -3/4
Data Transmission
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Sink
Source
Our work Design -4/4Our work Design -4/4
Route Maintenance
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sink
1-Level CH
sink
2-Level CH
1-Level CH
(a) Sink node movement within 1-level cluster
(b) Sink node movement within 2-level cluster
Performance Evaluation -1/4Performance Evaluation -1/4
Communication Overhead Analysis
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Number of nodes
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TTDD Proposed Work
Performance Evaluation -2/4Performance Evaluation -2/4
Sensor field size2000m* 2000m
Number of sensor nodes200
Energy consumptionTo transmit : 0.66W
To receive : 0.395W
The numbers of source and sink nodes 1-8
Simulation time100seconds
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Performance Evaluation-3/4Performance Evaluation-3/4
The number of sources
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TTDD 1- Level Proposed Work(2- Level)
Performance Evaluation -4/4Performance Evaluation -4/4
The number of sinks
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TTDD 1- Level Proposed Work(2- Level)
ConclusionsConclusions
Good energy conserving a data dissemination method comparing with TTDD
Hierarchical Routing Protocol using a 2-level permanent grid structure.
Further workdata fusion and data transmission methods.
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