Where It Works
WTCP does not replace the TCP on the hosts, but is placed on a proxy in between two communicating hosts.
In wireless systems, WTCP is placed on a base station or intermediate gateway between a source host and a mobile (wireless) host. The base station is a wireless transmitter and receiver for the mobile host, and acts as a gateway to the internet for the host.
The following is a highly simplified example of what happens when the mobile host and source host have a TCP connection with each other. When the mobile host uses its TCP to send a segment, the WTCP at the base station receives it and sends it on through the network, where it eventually reaches the awaiting host. The awaiting host might send an acknowledgment back through the network, to the base station, which transmits it to the mobile host. Despite handling some wireless-related errors, WTCP effectively does exactly what regular TCP does. The two edge hosts aren't even aware that the WTCP exists.
Read more about this topic: WTCP
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