Abstract: Wireless Ad hoc Networks TCP wrongly attributes packet losses due to the high Bit Error Rate (BER) location-dependent contention, unidirectional links, dynamic topology and the inherent fading properties of the wireless channel to as congestion. It causes an overall degradation of throughput; it especially affects connections with a large number of hops, where link failures are more likely. A number of cross layer solutions such as TCP-F, TCP-ELFN, ATCP, TCP-Bus and SPLIT-TCP has been proposed.