Research On Receive Buffer Allocation Policy Of CMT In Next-Generation Internet

With the rapid development of Internet and related technologies, the inherent defects of TCP is becoming increasingly apparent. It has been reach a consensus that SCTP will replace TCP and become the transfer protocol in next generation internet. In order to aggregate bandwidth and improve transmission throughput of end-to-end, on the basis of the SCTP, the researchers propose a scheme of Concurrent Multipath Transfer (CMT), throughput modeling of SCTP-CMT is the core issue. It has much significance in theory and much value in appli-cation to carry out the research of throughput modeling of End to End CMT in next-generation internet.Previously,study of message format, load balancing and congestion control for concurrent multipath transfer are under two strong and limiting assumptions:(1)the bottleneck queues on end-to-end paths used in CMT were independent of each other;(2)the receive buffer is infinite, no receive buffer blocking. Receive buffer blocking problem has been widespread concern, CMT has huge throughput, now there is the following questions2:(1)in ordered delivery receive buffer is often exhausted caused by data loss,which seriously affecting the transmission performance.(2)in the on ordered delivery case,receive buffer is consumed by differences of data processing speed.The above problem has been seriously constrained CMT throughput.This paper analysis these two issues in-depth and points out the corresponding solutions:(1)proposed Receive Buffer Allocation-Oriented Association Bandwidth for ordered delivery, according to the needs of receive buffer in the most serious case buffer, and try to ensure that the receive buffer will not be exhausted;(2)proposed Receive Buffer Allocation-Oriented Date Process Speed-gap for on ordered delivery,Measures the changing rate of the available receive buffer the as the processing speed of the gap,and reset receive buffer. the simulation test results show that the two policy avoid the receive buffer blocking problem to some extent. Finally, the paper gave the summary of the subject and outlook the research work of future.