The past, present, and future of transport-layer multipath

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• 作者：Sana Habib^a ; ^{14mseeshabib@seecs.edu.pk" class="auth_mail" title="E-mail the corresponding author}Author Vitae ; Junaid Qadir^b ; ^{junaid.qadir@itu.edu.pk" class="auth_mail" title="E-mail the corresponding author}Author Vitae ; Anwaar Ali^b ; ^{anwaar.ali@itu.edu.pk" class="auth_mail" title="E-mail the corresponding author}Author Vitae ; Durdana Habib^c ; ^{durdana.habib@nu.edu.pk" class="auth_mail" title="E-mail the corresponding author}Author Vitae ; Ming Li^d ; ^{ming.li@aalto.fi" class="auth_mail" title="E-mail the corresponding author}Author Vitae ; Arjuna Sathiaseelan^e ; ^{arjuna.sathiaseelan@cl.cam.ac.uk" class="auth_mail" title="E-mail the corresponding author}Author Vitae
• 关键词：Multipath ; Flow control ; Congestion control ; Flow scheduling ; Fairness ; Stability ; Responsiveness
• 刊名：Journal of Network and Computer Applications
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：75
• 期：Complete
• 页码：236-258
• 全文大小：1952 K

文摘

Multipathing in communication networks is gaining momentum due to its attractive features of increased reliability, throughput, fault tolerance, and load balancing capabilities. In particular, wireless environments and datacenters are envisioned to become largely dependent on the power of multipathing for seamless handovers, virtual machine (VM) migration and in general, pooling less proficient resources together for achieving overall high proficiency. The transport layer, with its knowledge about end-to-end path characteristics, is well placed to enhance performance through better utilization of multiple paths. Realizing the importance of transport-layer multipath, this paper investigates the modernization of traditional connection establishment, flow control, sequence number splitting, acknowledgement, and flow scheduling mechanisms for use with multiple paths.

Multipath rate control defines the fundamental feature of the transport layer. Thus, we study the restructuring of classical utility maximization framework and analyze its stability and convergence. We also examine the topic of multipath congestion control in the light of TCP fairness. To the best of our knowledge, this is the first in-depth survey paper that has chronicled the evolution of the transport layer of the Internet from the traditional single-path TCP to the recent development of the modern multipath TCP (MPTCP) protocol. Along with describing the history of this evolution, we also highlight in this paper the remaining challenges and research issues.