Adaptive Increase and Adaptive Decrease Algorithm for Wireless TCP

This paper proposes a new error and congestion control scheme using corruption-aware adaptive increase and adaptive decrease algorithm to improve TCP performance over wireless/heterogeneous networks. In the proposed scheme, the slow start threshold is estimated based on the amount of the received integral data as well as the amount of the received corrupted data as per round trip time interval, and only updated when the lost but not the corrupted segment is detected by the sender, since the corrupted packets also still arrive at TCP receiver. On the other hand, the duplicated ACKs can be processed differently by the sender depending on whether there are any unrecovered lost but not corrupted segments. Simulation results show that the proposed scheme could significantly improve TCP throughput performance over the heterogeneous networks with a high bit error rate, compared to the existing TCP and its variants.