Wireless Technology is an alternative to Wired Technology, which is commonly used, for connecting devices in wireless mode. The characteristics of Ad hoc networks are: Collection of mobile nodes forming a temporary network, Network topology changes frequently and unpredictably, No centralized administration or standard support services and the Host is also function as router.

1. Ad hoc wireless Network
Prepared by:
Mr. Malik Zaib Alam

2. If we want to share information stored
on our devices with other people
nearby, and everyone’s device has a
wireless network adapter, a simple
method of sharing is to set up an ad
hoc wireless network.

3. Why we use Ad hoc Networks?
If we do not have a wireless Access
Point/Wireless Router and we want to
create a wireless Network in a small
area. This network is often referred to
as ad-hoc network.
An ad hoc wireless network is by
definition a temporary Network.

4. In spite of the fact that members
must be within 30 feet of each other,
this type of network presents a lot of
possibilities. For example, you might
consider establishing an ad hoc
network at a meeting of mobile
computer users so that you can share
information with other attendees on
their own screens rather than an
overhead projector.

5. Client to Client

7. Applications of Ad Hoc
 Earliest uses: military
 law enforcement
 emergency search-and-rescue
teams
 business / commercial
 conventions
 data acquisition

8. Some Ad Hoc Protocols
 DARPA (1970s military packet radio)
used with SURAN (SURvivable
Adaptive Network; an early ad hoc
networking testbed)
 CGSR (hierarchical)
 TORA (time-based; uses link
reversal)
 DSR
 AODV

9. How to build
ad hoc network?