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network coding

A method of transmitting messages in an ad hoc network that allows for the recovery of lost data. Messages are broken up into chunks and coded with information about the other chunks. In the event one chunk is lost, the data in the other chunks can be used to reconstruct the lost data at the receiving end. See mobile ad hoc network.



mobile ad hoc network

A wireless network that transmits from computer to computer. Instead of using a central base station (access point) to which all computers must communicate, this peer-to-peer mode of operation can greatly extend the distance of the wireless network. To gain access to the Internet, one of the computers can be connected via wire or wireless to an ISP.

Routing from one node to another on such a "mesh" network typically uses an on-demand routing protocol, such as DSR or AODV, which generates routing information only when a station initiates a transmission. See DSR, AODV and 802.11.





A Wireless Mesh
When laptops are set up to transmit in "ad hoc" mode, they create a wireless mesh network.






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