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Organization
Introduction to Mobile Ad hoc networks (MANET).
Routing in MANET.
Advantages and Disadvantages.
Future Aspects.
Introduction to Manet

Location for the routers is fixed.
The mobile nodes can only communicate over a one-hop wireless page link to the base-station, multi-hop wireless links are not possible.
Cellular networks consist of a wired backbone which connects the base-stations.
Infrastructure dependent.
High setup costs.
Large setup time.
Reliable.



MANET stands for Mobile Ad-hoc Networking.
Links between the nodes can change during time, new nodes can join the network, and other nodes can leave it.
MANET has no permanent infrastructure at all. All mobile nodes act as mobile routers.
Mobile hosts.
Multi-hop routes between nodes.
Does not use large infrastructure.

Hybrid Networks
In hybrid networks the concepts of cellular networks and mobile ad-hoc networks are mixed.
On one side we have a cellular network, on the other side there are mobile nodes with routing facilities.
The idea is to gain more efficiency out of the existing infrastructure, to cover wider areas with less fixed antennas and base-stations and to reduce power consumption.


Characteristics of MANETs
Dynamic topology
links formed and broken with mobility.



Possibly uni-directional links.
Constrained resources.
battery power.
wireless transmitter range.