A new method for TCP congestion control based on AODV congestion indication

There are a variety of reasons for packet loss in ad hoc wireless networks, but the upper-layer does not distinguish the reasons, takes control blindly, and leads to the overall performance of TCP be affected. To solve the problems, this paper proposes a proposal to improve the performance of TCP. The proposal takes advantage of the mechanisms and characters of AODV, and makes use of cross-layer information of MAC layer, network layer and transport layer to improve the performance of TCP. We have implemented the proposal in NS2, and tested it in lots of scenarios. The simulation results show that it can decline the numbers of TCP slow-start, reduces the number of route discover, in static scenarios it can improve the throughput by about 15% to 20%; in dynamic scenarios, it can also improve the throughput slightly.