A performance analysis model for TCP over multiple heterogeneous paths in 5G networks

Jiayang Song, Ping Dong, Huachun Zhou, Tao Zheng, Xiaojiang Du, Mohsen Guizani

Research output: Contribution to journalConference articlepeer-review

2 Scopus citations

Abstract

The demand for multipath transmission is prominent in 5G networks with the deployment of multiple hierarchical access technologies. However, multipath schemes are still not widely adopted due to many reasons, such as deployment challenges and performance reduction under the circumstances of path heterogeneity. Thus, TCP is still in the dominant position of the transport layer protocol for now and for the foreseeable future. Link asymmetry, such as different latency and different bandwidth of different links, is considered to be the main reasons leading to packet reordering, and further result in TCP performance reduction. However, to the best of knowledge, no one has yet given a theoretical model to analyze the relationship between link asymmetry and TCP multipath performance. In this paper, we present a performance analysis model for TCP over multiple heterogeneous networks, which reveals the effect of link asymmetry on TCP throughput. Both bandwidth and delay asymmetry are taken into consideration in the proposed model. The evaluated throughput using the proposed model can accurately fit the simulation results.

Original languageEnglish
Pages (from-to)1-6
Number of pages6
JournalProceedings - IEEE Global Communications Conference, GLOBECOM
Volume2018-January
DOIs
StatePublished - 2017
Event2017 IEEE Global Communications Conference, GLOBECOM 2017 - Singapore, Singapore
Duration: 4 Dec 20178 Dec 2017

Keywords

  • 5G
  • Internet
  • Multi-access communication
  • Multipath
  • Transport protocols

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