Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/80391
Title: A measurement study on multi-path TCP with multiple cellular carriers on high speed rails
Authors: Li, L
Xu, K
Li, T
Zheng, K
Peng, C
Wang, D 
Wang, X
Shen, M
Mijumbi, R
Keywords: Cellular networks
High speed rails
Measurement
Multi-path TCP
Issue Date: 2018
Publisher: Association for Computing Machinery, Inc
Source: Proceedings of the 2018 Conference of the ACM Special Interest Group on Data Communication (SIGCOMM 2018), 2018, p. 161-175 How to cite?
Abstract: Recent advances in high speed rails (HSRs) are propelling the need for acceptable network service in high speed mobility environments. However, previous studies show that the performance of traditional single-path transmission degrades significantly during high speed mobility due to frequent handoff. Multi-path transmission with multiple carriers is a promising way to enhance the performance, because at any time, there is possibly at least one path not suffering a handoff. In this paper, for the first time, we measure multi-path TCP (MPTCP) with two cellular carriers on HSRs with a peak speed of 310km/h. We find a significant difference in handoff time between the two carriers. Moreover, we observe that MPTCP can provide much better performance than TCP in the poorer of the two paths. This indicates that MPTCP's robustness to handoff is much higher than TCP's. However, the efficiency of MPTCP is far from satisfactory. MPTCP performs worse than TCP in the better path most of the time. We find that the low efficiency can be attributed to poor adaptability to frequent handoff by MPTCP's key operations in sub-flow establishment, congestion control and scheduling. Finally, we discuss possible directions for improving MPTCP for such scenarios.
URI: http://hdl.handle.net/10397/80391
ISBN: 9.78145E+12
DOI: 10.1145/3230543.3230556
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