Course Overview
Some References:
One Type of Wireless
Networks:
“Infrastructure-based”
Another Type of Wireless
Networks:
“Infrastructure-less”
Manet: Mobile Ad-hoc
Networking
Ad hoc Networks
Use of the Ad-Hoc
Technology for Military Communications
Ubiquitous Networking
Applications of Ad-Hoc
Networks
Wireless Mesh Community
Networks: Bridging the Broadband Divide
Why Broadband?
Density = Broadband
Broadband is Not Yet a
Reality
Broadband Access:
Wiring the Last Mile?
Community Mesh
Network
The natural evolution of broadband connectivity
Why MOBILE Ad-Hoc
Networks?
Challenges in Ad-Hoc
Networks
Ad-Hoc Networks vs.
Cellular Networks
Other Challenges of
Ad-Hoc Networks
Characteristics of Ad Hoc
Networks
“Mobile Ad Hoc Networking
is a multi-layer problem !”
Medium Access Control in
MANET
Network Layer in MANET
Main Issue – “Routing”
Ad hoc Routing Protocols
Ad-Hoc Networking: MANET
MANET Routing Protocols
Routing Protocols -
Design
Trade-Off
Leading MANET Contenders
AODV
Route Requests in AODV
Route Requests in AODV
Route Requests in AODV
Reverse Path Setup in
AODV
Reverse Path Setup in
AODV
Reverse Path Setup in
AODV
Route Reply in AODV
Route Reply in AODV
Forward Path Setup in
AODV
Data Delivery in AODV
Timeouts
Link Failure Reporting
Route Error
Link Failure Detection
Why Sequence Numbers in
AODV
Summary: AODV
Proactive Routing: OLSR
Protocol
OLSR Protocol (2)
MPR Computation
MPR Computation (2)
MPR Computation (3)
Routing Table
Multicast: Motivation
Motivation (cont.)
Multicast Protocol
Performance
Are Multicast Protocols
Right Choice?
Simulation Results:
Summary I
Simulation Results:
Summary II
Broadcast Protocols
Competitive
Many Challenges Yet to be
Addressed
Wireless Sensor
Networks
(aka Embedded Networked Sensors)
Embedded Networked
Sensing Potential
Sensor Applications
Sensor Applications (IEEE
Computer)
App#1: Seismic
Field Experiment
Research Challenges
App#2: Contaminant
Transport
ENS Research Implications
App#3: Ecosystem
Monitoring
Field Experiments
ENS Requirements for
Habitat/Ecophysiology Applications
Transportation and Urban
Monitoring
Slide 75
Enabling Technologies
Sensors
Some Networked Sensor
Node Developments
Sensor Node Energy
Roadmap
Comparison of Energy
Sources
Communication/Computation
Technology Projection
"“The network is the..."
New Design Themes
From Embedded Sensing to
Embedded Control
Sample Layered
Architecture