Intelligent IEEE 802.11b Wireless Networks MAC Layer Diagnostic Controller in Mobile Ad Hoc Network
In a Mobile Ad hoc NETwork (MANET), when a node fails during the RTS-CTS handshake process, the MAC protocol is able to identify whether the failure was caused by link failure or due to congestion by inspecting the recorded radio signal strengths. If the cause is due to actual link failure, then MAC abandons any further attempt to retry communicating with the node. If the failure is due to congestion, the conventional approach in attempt to reconnect the link is wasteful of both time and bandwidth. This will in turn cause packet loss and hence degradation in the TCP performance.