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Ad Hoc NetworksorWireless LAN
Types of Wireless Networks
Infrastructure based (Cellular Network).
Infrastructure less Network (Ad hoc
network)
What is Ad Hoc Network ?
Characteristics of an Ad-hoc network
Collection of mobile nodes forming a temporary network
Network topology changes frequently and
unpredictably
No centralized administration or standard
support services
Host is also function as router
Route Discovery
A route between two nodes is found by sending an Route Request
Route Request builds a source route on every path through the network
First Route Request to arrive is accepted; target responds on that path and tells initiator what the source route is
Source route is used on subsequent data traffic
Creating wireless Ad Hoc network in window xp
To create a new ad hoc network open Control Panel then Network Connections, or right click on the wireless icon in the system tray (by the clock).
Click open network connection.
Click on the Wireless Network tab then the add button.
A new window will appear.  Give your network a name, and check the two boxes near the bottom.
Connecting the Ad Hoc NEtwork
Open Network Connections (via Control Panel or the wireless icon) and select View Wireless Networks.  The following window will appear.
You should see the ad hoc network as a computer-to-computer network.  You may have to refresh the list.
Click on Change advanced settings.  On the new window, click on the Wireless Networks tab, then advanced.
Checking connectivity
Set your tcp/ip i.e. 192.168.0.12
Set other nodes tcp/ip
The two tcp/ip should be different.
Open “run” from start button.
Type “ping” (ping 192.188.0.3) and the other nodes tcp/ip.
If it provides reply, you are connected to the node and can share your data with other node.