Fair Intelligent Feedback Mechanism on TCP based Network

Abstract

Network performance degradation due to congestion is a major problem in the Internet. This performance degradation is mainly due to the uncoordinated interaction of congestion control mechanism of the TCP and that of the underlying network. Another challenging problem is that TCP cannot achieve fair bandwidth allocation among competing TCP traffics. In this paper, we propose a Fair Intelligent Congestion Control Resource Discovery (FICCRD) mechanism that can improve end-to-end TCPperformance by controlling the congestion and allocating fair share of bandwidth among competing TCP traffICS.The key ideas of FICCRD are to integrate available network resources in estimating connections' fair share of network resource; to create feedbadc control loops between edge routers; to introduce a protocol whereby a special Resource Discovery (RD) packet is employed to coUectand convey en route router state information: and to employ inteUigent algorithms to match a connection's TCP sending rate to the rate at which the underlying network can support Simulation results show that the mechanism can signi[lCQntlyimprove in throughput, fairness, and packet loss rate for TCP connections. More importantly, the mechanism is transparent to TCP and requires no modifications to current TCP implementations.