Evaluation of VoIP Quality over WiBro

Han, Mongnam; Lee, Youngseok; Moon, Sang Heup; Jang, Keon; Lee, Dong Hoon

doi:10.1007/978-3-540-79232-1_6

Cited by 16 publications

(13 citation statements)

References 6 publications

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“…Their result shows that TCP throughput on HSDPA is around 1 Mbps and that on WCDMA is 350 Kbps; both are close to corresponding ISPs advertised limits. Han et al measured UDP throughput and VoIP quality over an WiBro network in a subway [6]. The UDP throughput is stable around 5.3 Mbps for downlink and 2 Mbps for uplink even in the subway moving at speed over 90 km/h.…”

Section: Related Workmentioning

confidence: 99%

3G and 3.5G wireless network performance measured from moving cars and high-speed trains

Jang

Han

Cho³

et al. 2009

Proceedings of the 1st ACM Workshop on Mobile Internet Through Cellular Networks

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In recent years, the world has witnessed the deployment of several 3G and 3.5G wireless networks based on technologies such as CDMA 1x EVolution Data-Only (EVDO), High-Speed Downlink Packet Access (HSDPA), and mobile WiMax (e.g., WiBro). Although 3G and 3.5G wireless networks support enough bandwidth for typical Internet applications, their performance varies greatly due to the wireless link characteristics.We present a measurement analysis of the performance of UDP and TCP over 3G and 3.5G wireless networks. The novelty of our measurement experiments lies in that we took our measurements in a fast moving car on a highway and in a high-speed train running at 300 km/h. Our results show that mobile nodes experience far worse performance than stationary nodes over the same network.

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Section: Related Workmentioning

confidence: 99%

3G and 3.5G wireless network performance measured from moving cars and high-speed trains

Jang

Han

Cho³

et al. 2009

Proceedings of the 1st ACM Workshop on Mobile Internet Through Cellular Networks

Self Cite

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“…In our previous work, we analyzed the throughput and delay performance of WiBro system in various environments [5]. Similarly, QoS of VoIP applications is evaluate based on the measured throughput, delay and packet losses in [6]. It was shown that the round trip time (RTT) delay performance of WiBro system is poor compared with the conventional data networks, e.g., Ethernet or Wi-Fi networks, though the throughput performance is quite good.…”

Section: Introduction Wibro (Wireless Broadband) Is a Korean Versimentioning

confidence: 99%

Measurement and Analysis of One-Way Delays over IEEE 802.16e/WiBro Network

Kim

Cai

Choi

2009

2009 IEEE 70th Vehicular Technology Conference Fall

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Abstract-One-way delay is an important metric to evaluate the performance of communication networks. In this paper, we analyze the one-way delay performance of the commercial WiBro networks based on the traffic measurement. In measurements, much large delay is observed in the uplink than downlink, and we find that such asymmetry due mainly to the impact of the uplink bandwidth request mechanism. Due to this large uplink delay, the performance of commercial IEEE 802.16e service can be severely degraded. We also discuss some possible solutions to ameliorate this problem.

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“…More recent studies used mobile WiMAX networks and assessed the performance of wireless Internet applications including BitTorrent [32], World of Warcraft [33], TCP and UDP [34], TCP [35], and VoIP [36] [37].…”

Section: Related Workmentioning

confidence: 99%

GENI WiMAX Performance: Evaluation and Comparison of Two Campus Testbeds

Fund

Wang

Korakis

et al. 2013

2013 Second GENI Research and Educational Experiment Workshop

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Abstract-In the last few years, there has been an increasing awareness of the need to evaluate new mobile applications and protocols in realistic wireless settings, and platforms such as the GENI WiMAX testbeds have been developed to fulfill this need. However, wireless testbed users have experienced frustration when straightforward usage scenarios do not consistently agree with the high data rates that are advertised by the wireless technology. This work seeks to clarify the performance characteristics of two GENI WiMAX testbeds under various wireless signal conditions and network traffic patterns. By measuring the performance of several popular wireless Internet applications in two very different wireless environments, we gain a deeper understanding of how a researcher may expect the GENI WiMAX platform to behave. Our findings include some counterintuitive results, e.g. that increasing signal quality can reduce application throughput, and that applications using a single TCP flow may achieve as much as 72% less throughput than an application in an identical setting that uses multiple TCP flows. With this work, we hope to help other researchers design realistic experiments on wireless Internet systems, understand the perceived shortcomings of the GENI WiMAX platform, and interpret their experimental results in the context of the wireless setting in which the experiment was conducted.

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Evaluation of VoIP Quality over WiBro

Cited by 16 publications

References 6 publications

3G and 3.5G wireless network performance measured from moving cars and high-speed trains

3G and 3.5G wireless network performance measured from moving cars and high-speed trains

Measurement and Analysis of One-Way Delays over IEEE 802.16e/WiBro Network

GENI WiMAX Performance: Evaluation and Comparison of Two Campus Testbeds

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