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TCP Performance over 5G mmWave Links - Tradeoff between Capacity and Latency
Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), Institutionen för matematik och datavetenskap (from 2013).
Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), Institutionen för matematik och datavetenskap (from 2013). (DISCO)ORCID-id: 0000-0002-9446-8143
2017 (Engelska)Ingår i: 2017 IEEE 13th International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob), IEEE, 2017, s. 385-394Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

Recently, 5G systems started to explore the usage of mmWave bands both for access and backhaul. Cellular systems operating at such frequencies would achieve a significantly higher capacity than current systems due to the large frequency block available. Due to the propagation characteristics, highly directional mmWave links may frequently switch between Line-of-sight, Non Line-of-sight and outage if the beam is blocked by obstacles. Such intermittent connectivity combined with high throughput causes TCP to perform very badly. In this paper, we study the performance of several TCP variants over intermittent mmWave links. We focus on latency aspects, use ns-3 with extensions for mmWave links and evaluate the TCP performance with real Linux TCP stacks using the Direct Code Execution (DCE) framework. We also investigate the benefit of bufferbloat solutions such as CoDel, with different TCP variants. We investigate the impact of CoDels configuration parameters and different RTTs on TCP throughput, fairness and queueing delay. The problem of slow recovery of TCP after NLOS periods is less pronounced when multiple flows coexist under CoDel only if some of the flows have very short RTTs. However, under presence of NLOS, the fairness between different flows with different RTT values is reduced.

Ort, förlag, år, upplaga, sidor
IEEE, 2017. s. 385-394
Serie
IEEE International Conference on Wireless and Mobile Computing Networking and Communications-WiMOB, ISSN 2160-4886
Nyckelord [en]
Delays;Throughput;Wireless communication;5G mobile communication;Packet loss
Nationell ämneskategori
Datavetenskap (datalogi) Telekommunikation Datorsystem Kommunikationssystem
Forskningsämne
Datavetenskap
Identifikatorer
URN: urn:nbn:se:kau:diva-66194DOI: 10.1109/WiMOB.2017.8115776ISI: 000419818000054ISBN: 978-1-5386-3839-2 (tryckt)OAI: oai:DiVA.org:kau-66194DiVA, id: diva2:1181687
Konferens
13th IEEE International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob), Oct 09-11, 2017, Rome, Italy
Tillgänglig från: 2018-02-09 Skapad: 2018-02-09 Senast uppdaterad: 2018-08-20Bibliografiskt granskad

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Pieskä, MarcusKassler, Andreas

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