Approaches for reducing receive buffer blocking in concurrent multipath transfer
Yanwei Zheng, Hong Ni, Haojiang Deng, Lei Liu · Computer Engineering and Applications Journal · 2012
In order to solve the receive buffer blocking in concurrent multipath transfer,this paper analyzes the reason for receive buffer blocking and proposes an improved packet scheduling method.Considering bandwidth,delay and packet loss rate,the method introduces the evaluation function of the path quality,with which it optimizes the packet scheduling algorithm.By transmitting packets through the path with best quality,it reduces the number of packets out of order caused by different path characteristics.Based on delay and packet loss rate,it also proposes an improved retransmission policy,which selects the fastest path to the receiver to retransmit the lost packets.It puts forward a method to estimate the size of receive buffer according to the bandwidth delay product of paths.The experimental results show that the packet scheduling method and the retransmission policy proposed can reduce receive buffer blocking effectively,which is better than CMT-SCTP.And the simulation also indicates that the estimation method can evaluate the desired receive buffer size accurately.