Background Traffic-Based Retransmission Algorithm for Multimedia Streaming Transfer over Concurrent Multipaths

Abstract

The content-rich multimedia streaming will be the most attractive services in the next-generation networks. With function of distribute data across multipath end-to-end paths based on SCTP's multihoming feature, concurrent multipath transfer SCTP (CMT-SCTP) has been regarded as the most promising technology for the efficient multimedia streaming transmission. However, the current researches on CMT-SCTP mainly focus on the algorithms related to the data delivery performance while they seldom consider the background traffic factors. Actually, background traffic of realistic network environments has an important impact on the performance of CMT-SCTP. In this paper, we firstly investigate the effect of background traffic on the performance of CMT-SCTP based on a close realistic simulation topology with reasonable background traffic in NS2, and then based on the localness nature of background flow, a further improved retransmission algorithm, namedRTX_CSI, is proposed to reach more benefits in terms of average throughput and achieve high users' experience of quality for multimedia streaming services.

Environment-Aware CMT for Efficient Video Delivery in Wireless Multimedia Sensor Networks

“…This phenomenon is reasonable since rbuf increases result in more packets that can be delivered over the wireless link and received by the receiver rapidly. Besides, our previous work [31] clarified that the impact of the background traffic on throughput is increased as the increasing of the rbuf. This reason leads to the e-CMT with less significant improvement on average throughput as PLR increases.…”

CMT‐CQA: Cross‐layer QoS‐aware adaptive concurrent multipath data transfer in heterogeneous networks

“…An internet measurement study showed complex behaviors of the internet traffic that is necessary for transport protocol performance testing. We add four TCP generators and one UDP generator for each router to generate about 80% TCP traffic and 20% UDP traffic over each wireless path according to the Internet survey mentioned in our previous work . All FTP/TCP traffic generators, VBR/UDP traffic generators, and CBR/UDP traffic generators are connected to each router ( R 1,1 , R 2,1 , R 3,1 , and R 4,1 ).…”