caa a22 4500 445322322 CHVBK 20180317142708.0 cr unu---uuuuu 170323e20110701xx s 000 0 eng 10.1007/s00530-010-0210-0 doi (NATIONALLICENCE)springer-10.1007/s00530-010-0210-0 Real-time video streaming over multipath in multi-hop wireless networks [Elektronische Daten] [Xiaoyuan Guo, Jiangchuan Liu, Shiguo Lian] Given the limited wireless link throughput, high loss rate, and varying end-to-end delay, supporting video applications in multi-hop wireless networks becomes a challenging task. Path diversity exploits multiple routes for each session simultaneously, which achieves higher aggregated bandwidth and potentially decreases delay and packet loss. Unfortunately, for TCP-based video streaming, naive load splitting often results in inaccurate estimation of round trip time (RTT) and packet reordering. As a result, it can suffer from significant instability or even throughput reduction, which is also validated by our analysis and simulation in multi-hop wireless networks. To make real-time TCP-based streaming viable over multi-hop wireless networks, we propose a novel cross-layer design with a smart traffic split scheme, namely, multiple path retransmission (MPR). MPR differentiates the original data packets and the retransmitted packets and works with a novel QoS-aware multi-path routing protocol, QAOMDV, to distribute them separately. MPR does not suffer from the RTT underestimation and extra packet reordering, which ensures stable throughput improvement over single-path routing. Through extensive simulations, we further demonstrate that, as compared with state-of-the-art multi-path protocols, our MPR with QAOMDV noticeably enhances the TCP streaming throughput and reduces bandwidth fluctuation, with no obvious impact to fairness. Springer-Verlag, 2010 Video streaming nationallicence TCP nationallicence Path diversity nationallicence Multi-hop wireless network nationallicence Guo Xiaoyuan School of Computing Science, Simon Fraser University, Burnaby, BC, Canada aut Liu Jiangchuan School of Computing Science, Simon Fraser University, Burnaby, BC, Canada aut Lian Shiguo France Telecom R&D Beijing, 2 Science Institute South Road, Haidian District, Beijing, China aut Multimedia Systems Springer-Verlag 17/4(2011-07-01), 287-297 0942-4962 17:4<287 2011 17 530 https://doi.org/10.1007/s00530-010-0210-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00530-010-0210-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Guo Xiaoyuan School of Computing Science, Simon Fraser University, Burnaby, BC, Canada aut NATIONALLICENCE 700 1- Liu Jiangchuan School of Computing Science, Simon Fraser University, Burnaby, BC, Canada aut NATIONALLICENCE 700 1- Lian Shiguo France Telecom R&D Beijing, 2 Science Institute South Road, Haidian District, Beijing, China aut NATIONALLICENCE 773 0- Multimedia Systems Springer-Verlag 17/4(2011-07-01), 287-297 0942-4962 17:4<287 2011 17 530 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer