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Analytical modeling of multipath TCP over last-mile wireless
journal contribution
posted on 2017-06-01, 00:00 authored by Shiva PokhrelShiva Pokhrel, M Panda, H L VuWe develop a comprehensive analytical model for multiple long-lived multipath Transmission Control Protocol (TCP) connections downloading content from a remote server in the Internet using parallel paths with Wi-Fi and cellular last-miles. This is the first analytical model developed in the literature that captures the coupling between the paths through heterogeneous wireless networks where the coupling arises due to the multipath TCP coupled congestion control protocol. The model also takes into account the impact of the shared nature of the wireless medium and the finite access point (AP) buffer in the Wi-Fi last-mile. The accuracy of the proposed model is demonstrated via extensive ns-2 simulations. Furthermore, we discover a new type of throughput unfairness among the competing regular and multipath TCP connections going through the same AP with a droptail buffer; the regular TCP connections essentially steal almost all the Wi-Fi bandwidth away from the multipath TCP connections. To tackle this problem, we present two simple solutions utilizing our analytical model and achieve fairness.
History
Journal
IEEE/ACM transactions on networkingVolume
25Issue
3Pagination
1876 - 1891Publisher
Institute of Electrical and Electronics EngineersLocation
Piscataway, N.J.Publisher DOI
ISSN
1063-6692Language
engPublication classification
C1.1 Refereed article in a scholarly journalCopyright notice
2017, IEEEUsage metrics
Keywords
Multipath TCPfixed point analysisWi-Ficellularthroughput unfairnessadmission controlScience & TechnologyTechnologyComputer Science, Hardware & ArchitectureComputer Science, Theory & MethodsEngineering, Electrical & ElectronicTelecommunicationsComputer ScienceEngineeringPERFORMANCE ANALYSISIEEE-802.11 WLANSNETWORKMANAGEMENTALGORITHMSBUFFERIMPACTDistributed Computing
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