Mobile Ad Hoc Networks (MANET) are composed of autonomous mobile nodes that form dynamically without fixed infrastructure, allowing for multi-hop routing and self-directed communication. They are applicable in various fields such as military communications, disaster recovery, and home networking, but face challenges like packet collisions due to the shared transmission media. Solutions to these challenges include various media access control protocols and routing mechanisms, both proactive and reactive.

2. Ginoy Joy

3. Mobile Ad Hoc Networking (MANET)
Features of MANET
Applications of MANET
Challenges of MANET
Media Access Control
MACA Solutions
Routing in Ad hoc Networks

4. • Formed dynamically by an autonomous system of
mobile nodes
• No existing fixed infrastructure
• Mobile nodes are free to move randomly.
• May Operate as standalone fashion
• Each Node work as router.

5. Self Directed Terminal
Easy to Communicate
Multi Hop Routing
Malleability of link capacity
Symmetric Environment
Dynamic in nature
Autonomous and Intermittent

6. Tactical Networks
•Military communications
•automated battlefields
Emergency Services
•Search and rescue operations
•Diaster recovery
Education
•Virtual classrooms
•conference rooms.
Home and Entertainment
•Home/office wireless networking.
•Multiuser games
•Personal Area Network

8. Media Access Control
• Since MANETs, use broadcasting
and shared transmission media
Introduces a probability
of packet collisions and
media contention.
• Since collision detection is not
possible with half-duplex radio.
Brings news challenges
to conventional
CSMA/CD- based and
MAC based protocols.
• The top issues
Hidden terminal and
exposed terminal
problems.

9. Hidden terminal
Problem
Exposed Terminal
Problem

10. RTS
CTS

11. ROUTING PROTOCOLS
Ad-hoc Mobile Routing Protocols
Proactive
DSDV, WRP, CGSR,
STAR, OLSR
Hybrid
ZRP
Reactive
ABR, DSR, TORA,
AODV, CBRP,
RDMAR