WIRELESS AD_HOC NETWORK
(WANET)
A wireless ad hoc network (WANET) is a decentralized type of
wireless network. The network is ad hoc because it does not rely on a pre
existing infrastructure, such as routers in wired networks or
access points in managed (infrastructure) wireless networks.
An ad-hoc network is a local area network (LAN) that is built
spontaneously as devices connect. Instead of relying on a base station to
coordinate the flow of messages to each node in the network, the individual
network nodes forward packets to and from each other. In the Windows
operating system, ad-hoc is a communication mode (setting) that allows computers
to directly communicate with each other without a router.
"Ad
Hoc" is actually a Latin phrase that means "for this purpose."
It is often used to describe solutions that are developed on-the-fly for a
specific purpose. In computer networking, an ad hoc network refers to a network
connection established for a single session and does not require a router or a wireless base
station.
For example, if you need to transfer a
file to your friend's laptop, you might create an ad hoc network between your
computer and his laptop to transfer the file. This may be done using an
Ethernet crossover cable, or the computers' wireless cards to communicate with
each other. If you need to share files with more than one computer, you could
set up a mutli-hop ad hoc network, which can transfer data over multiple nodes.
Basically, an ad
hoc network is a temporary network connection created for a specific purpose
(such as transferring data from one computer to another). If the network is set
up for a longer period of time, it is just a plain old local area network (LAN).
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