Experimental investigation of the impact on TCP traffic by hidden video-tagged UDP traffic

Name: Experimental investigation of the impact on TCP traffic by hidden video-tagged UDP traffic
Author: Çakmak, Kıvanç, Sunay, Mehmet Oğuz, Ercan, Ali Özer, İlhan, C., Çakar, C., Sofuoğlu, Ç.

İsim	Experimental investigation of the impact on TCP traffic by hidden video-tagged UDP traffic
Yazar	Çakmak, Kıvanç, Sunay, Mehmet Oğuz, Ercan, Ali Özer, İlhan, C., Çakar, C., Sofuoğlu, Ç.
Basım Tarihi:	2017
Basım Yeri	- IEEE
Tür	Belge
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	978-1-5386-2077-9
Kayıt Numarası	c84735df-6ec5-4027-8a21-76b8f1239540
Lokasyon	Electrical & Electronics Engineering, Computer Science
Tarih	2017
Notlar	Due to copyright restrictions, the access to the full text of this article is only available via subscription.
Örnek Metin	This paper investigates the impact of video-tagged UDP traffic on best-effort TCP traffic in an experimental setup with a novel observation approach. Our setup consists of three 802.11ac nodes in a hidden node topology, where a 20Mbps UDP and a best effort TCP traffic flow from the edge (hidden) nodes to the center node. We observe that, even though the RTS/CTS mechanism is enabled, when UDP and TCP traffic flow simultaneously, video-tagged UDP traffic causes the besteffort TCP traffic throughput to drop by 50%. An analysis of the captured and synchronized packet data reveals for the first time that, the following event is a surprising major contributor to the throughput degradation. Since the TCP and UDP sources are hidden from each other, an RTS packet of the UDP source may collide with the CTS reply to the TCP source. This in turn may result in many collisions between the subsequent RTS packets of the UDP source and the data packet of the TCP source. This paper experimentally shows that this event is particularly commonplace for video-tagged traffic, having smaller back-off duration, severely impacting the cross-traffic.
DOI	10.1109/MedHocNet.2017.8001649

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Experimental investigation of the impact on TCP traffic by hidden video-tagged UDP traffic

Yazar Çakmak, Kıvanç, Sunay, Mehmet Oğuz, Ercan, Ali Özer, İlhan, C., Çakar, C., Sofuoğlu, Ç.

Basım Tarihi 2017

Basım Yeri - IEEE

Tür Belge

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 978-1-5386-2077-9

Kayıt Numarası c84735df-6ec5-4027-8a21-76b8f1239540

Lokasyon Electrical & Electronics Engineering, Computer Science

Tarih 2017

Notlar Due to copyright restrictions, the access to the full text of this article is only available via subscription.

Örnek Metin This paper investigates the impact of video-tagged UDP traffic on best-effort TCP traffic in an experimental setup with a novel observation approach. Our setup consists of three 802.11ac nodes in a hidden node topology, where a 20Mbps UDP and a best effort TCP traffic flow from the edge (hidden) nodes to the center node. We observe that, even though the RTS/CTS mechanism is enabled, when UDP and TCP traffic flow simultaneously, video-tagged UDP traffic causes the besteffort TCP traffic throughput to drop by 50%. An analysis of the captured and synchronized packet data reveals for the first time that, the following event is a surprising major contributor to the throughput degradation. Since the TCP and UDP sources are hidden from each other, an RTS packet of the UDP source may collide with the CTS reply to the TCP source. This in turn may result in many collisions between the subsequent RTS packets of the UDP source and the data packet of the TCP source. This paper experimentally shows that this event is particularly commonplace for video-tagged traffic, having smaller back-off duration, severely impacting the cross-traffic.

DOI 10.1109/MedHocNet.2017.8001649