WHERE DISCOVERIES BEGIN
National Science Foundation
Simulation Tools for Underwater
Acoustic Network Analysis
Sumit Roy
Dept. of Electrical Eng.
Fundamentals of Networking Lab
U. Washington, Seattle
roy@ee.washington.edu
www.ee.washington.edu/research/funlab
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WHERE DISCOVERIES BEGIN
National Science Foundation
Focus of Project / Need and Industrial
Relevance (1 slide)
 Underwater Environment is challenging
- too many variables/unknowns
- temporal and spatial variations!
 Performance of UW deployments+protocols
untested (currently)!
 need for good software
analysis tools
pre-deployment to
mitigate risk!
Innovation through Partnerships
2
WHERE DISCOVERIES BEGIN
National Science Foundation
Project Purpose and Goals (1 slide)
• UW is a leader in UW channel modeling
and simulation tools
 Bell Hop: ray-tracing based accurate
channel models
 ns-3: network simulation engine for
analysis of protocol stack [funded by
NSF over 8 year period]
Innovation through Partnerships
3
WHERE DISCOVERIES BEGIN
National Science Foundation
Existing ns-3 UAN Simulation Library
 Supports AUV mobility models
 Includes PER and interference models
– Channel delivers prop. model data to PHY
– PHY uses PER and interference modules to
compute SINR and RX success
 Current MAC models
– ALOHA with Random Backoff MAC
– Reservation Channel MAC protocol
Net Device
MAC
PHY
PER
SINR
Channel
Propagation
Model
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WHERE DISCOVERIES BEGIN
National Science Foundation
Primary Project Objectives (1 slide)
NS3 UAN Future Work
• Integrate new link packet error rate (PER) models
[collaborate with UConn]
– OFDM
• Identify network topologies (industry defined)
• Develop AUV mobility models (industry defined)
• Implement new MAC protocols (industry
recommendations)
– APCAP [1]
– Slotted FAMA [2]
Innovation through Partnerships
5
WHERE DISCOVERIES BEGIN
National Science Foundation
Approach & Methods (1 or 2 slides MAX)
• Customize ns-3 solutions
to partner needs
MAC
MAC
- develop new modules
within ns-3
Pkt,
PHY
Mode,
PHY
SINR
- conduct full suite
Pkt, Mode,
simulations
ChannelRx Pwr,
PDP
- tech transfer and Src
Rx
Mobility,
Power,
Dest
PDP
support
Mobility Prop. Model
Innovation through Partnerships
6
WHERE DISCOVERIES BEGIN
National Science Foundation
Outcomes/Deliverables (1 slide)
• Work with partners pre-deployment to
provide initial predictive assessments
• Integrate partner data (channel
measurements, node mobility
characteristics) into customized
solutions
• Provide recommendations for
experiments, staging deployments
Innovation through Partnerships
7
WHERE DISCOVERIES BEGIN
National Science Foundation
Expected Impacts (1 slide)
 Mitigate risk !
 Essential component of continual
planning and refinement!
Innovation through Partnerships
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