Research of Interaction between TCP and MAC Protocol in Multihop Ad Hoc Networks

The paper first shows that TCP´s congestion control mechanism based on packet-loss does not adapt well in multihop ad hoc networks. Then by modeling the MAC protocol, the interaction between the MAC protocol and TCP is pointed: the function of the MAC layer is to try its best to look for a group mutually exclusive job scheduling for the loaded traffic, whereas the function of transport layer is to adjust its traffic to ensure the existence of a feasible scheduling so that the MAC layer can find. By constructing the optimal MAC protocol according to the contention graph, we gain the maximum transmission rate of TCP senders which can assure the TCP fairness.