Throughput Characteristics in Densely Deployed Wireless LANs with Various Channel Assignments and Differing Numbers of Terminals

Natsumi Kumatani; Mitomo Isomura; Tutomu Murase; Masato Oguchi; Akash Baid; Shweta Sagari; Ivan Seskar; Dipankar Raychaudhuri

doi:10.3169/mta.2.336

Throughput Characteristics in Densely Deployed Wireless LANs with Various Channel Assignments and Differing Numbers of Terminals

Natsumi Kumatani, Mitomo Isomura, Tutomu Murase, Masato Oguchi, Akash Baid, Shweta Sagari, Ivan Seskar, Dipankar Raychaudhuri

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

Mobile wireless local area networks (WLANs) are becoming popular. Mobile WLANs can be composed of WiFi devices such as portable access points (APs) and portable terminals such as smartphones, tablets and any tethering devices. Several mobile WLANs are densely deployed in a conference room or café. In this case, the WLANs have to share available channels even though they suffer from interference. The interferences coming from the same channel (intra-channel contention) or a different channel (inter-channel interference) reduce the total throughput of the WLANs. This paper investigates the throughput characteristics of several densely deployed WLANs for multimedia communications. For experiments using real machines, for example, 18 sets of WLANs, the relationship among the number of WLANs, distance of WLANs, channel assignment and total throughput was revealed. Moreover, it is shown that the number of terminals in each WLAN substantially affects the total throughput because of the nature of the multi-rate and sending opportunity fairness in CSMA/CA or a performance anomaly.

Original language	English (US)
Pages (from-to)	336-344
Number of pages	9
Journal	ITE Transactions on Media Technology and Applications
Volume	2
Issue number	4
DOIs	https://doi.org/10.3169/mta.2.336
State	Published - 2014

All Science Journal Classification (ASJC) codes

Signal Processing
Media Technology
Computer Graphics and Computer-Aided Design

Keywords

Interference
Mobile user
Quality of Service
TCP
Wireless LANs

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10.3169/mta.2.336

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abstract = "Mobile wireless local area networks (WLANs) are becoming popular. Mobile WLANs can be composed of WiFi devices such as portable access points (APs) and portable terminals such as smartphones, tablets and any tethering devices. Several mobile WLANs are densely deployed in a conference room or caf{\'e}. In this case, the WLANs have to share available channels even though they suffer from interference. The interferences coming from the same channel (intra-channel contention) or a different channel (inter-channel interference) reduce the total throughput of the WLANs. This paper investigates the throughput characteristics of several densely deployed WLANs for multimedia communications. For experiments using real machines, for example, 18 sets of WLANs, the relationship among the number of WLANs, distance of WLANs, channel assignment and total throughput was revealed. Moreover, it is shown that the number of terminals in each WLAN substantially affects the total throughput because of the nature of the multi-rate and sending opportunity fairness in CSMA/CA or a performance anomaly.",

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author = "Natsumi Kumatani and Mitomo Isomura and Tutomu Murase and Masato Oguchi and Akash Baid and Shweta Sagari and Ivan Seskar and Dipankar Raychaudhuri",

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AU - Kumatani, Natsumi

AU - Isomura, Mitomo

AU - Murase, Tutomu

AU - Oguchi, Masato

AU - Baid, Akash

AU - Sagari, Shweta

AU - Seskar, Ivan

AU - Raychaudhuri, Dipankar

PY - 2014

Y1 - 2014

N2 - Mobile wireless local area networks (WLANs) are becoming popular. Mobile WLANs can be composed of WiFi devices such as portable access points (APs) and portable terminals such as smartphones, tablets and any tethering devices. Several mobile WLANs are densely deployed in a conference room or café. In this case, the WLANs have to share available channels even though they suffer from interference. The interferences coming from the same channel (intra-channel contention) or a different channel (inter-channel interference) reduce the total throughput of the WLANs. This paper investigates the throughput characteristics of several densely deployed WLANs for multimedia communications. For experiments using real machines, for example, 18 sets of WLANs, the relationship among the number of WLANs, distance of WLANs, channel assignment and total throughput was revealed. Moreover, it is shown that the number of terminals in each WLAN substantially affects the total throughput because of the nature of the multi-rate and sending opportunity fairness in CSMA/CA or a performance anomaly.

AB - Mobile wireless local area networks (WLANs) are becoming popular. Mobile WLANs can be composed of WiFi devices such as portable access points (APs) and portable terminals such as smartphones, tablets and any tethering devices. Several mobile WLANs are densely deployed in a conference room or café. In this case, the WLANs have to share available channels even though they suffer from interference. The interferences coming from the same channel (intra-channel contention) or a different channel (inter-channel interference) reduce the total throughput of the WLANs. This paper investigates the throughput characteristics of several densely deployed WLANs for multimedia communications. For experiments using real machines, for example, 18 sets of WLANs, the relationship among the number of WLANs, distance of WLANs, channel assignment and total throughput was revealed. Moreover, it is shown that the number of terminals in each WLAN substantially affects the total throughput because of the nature of the multi-rate and sending opportunity fairness in CSMA/CA or a performance anomaly.

KW - Interference

KW - Mobile user

KW - Quality of Service

KW - TCP

KW - Wireless LANs

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Throughput Characteristics in Densely Deployed Wireless LANs with Various Channel Assignments and Differing Numbers of Terminals

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All Science Journal Classification (ASJC) codes

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