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Evaluation of VoIP Quality over WiBro [chapter]

Mongnam Han, Youngseok Lee, Sue Moon, Keon Jang, Dooyoung Lee
Lecture Notes in Computer Science  
In this work, we have conducted experiments to evaluate QoS of VoIP applications over the WiBro network.  ...  VoIP quality is better than or at least as good as toll quality despite user mobility exceeding the protected limit of WiBro mobility support.  ...  Youngseok Lee was supported by the Ministry of Information and Communication, Korea, under the ITRC (Information Technology Research Center) support program supervised by the IITA (Institute of Information  ... 
doi:10.1007/978-3-540-79232-1_6 dblp:conf/pam/HanLMJL08 fatcat:gyby4c62wjctpmz3vqqgtqrkoq

Performance measurement over Mobile WiMAX/IEEE 802.16e network

Dongmyoung Kim, Hua Cai, Minsoo Na, Sunghyun Choi
2008 2008 International Symposium on a World of Wireless, Mobile and Multimedia Networks  
It motivates us to improve round trip time performance of WiBro system. Finally, we analyze the VoIP performance and the performance when the user moves around the whole city.  ...  WiBro(Wireless Broadband) is a Korean version of Mo bile WiMAX/IEEE 802.16e system, which is designed for mobile broadband wireless access.  ...  From the perspective of the subjective conversation quality, the quality of VoIP was pretty good even in indoor since we could hear the voice clearly without any delay or interruption.  ... 
doi:10.1109/wowmom.2008.4594817 dblp:conf/wowmom/KimCNC08 fatcat:fsiaq3fijveldnrx7iylyxpane

The analysis of the relation between the quality of voice service and the quality of the wireless channel over a WiBro network
와이브로를 통한 음성서비스의 품질과 무선 채널 품질과의 통계적 상관관계 분석

Beom-Joon Kim
2014 The Journal of the Korea institute of electronic communication sciences  
키워드 QoE(Quality of Experience), VoIP(Voice over IP) Service, WiBro(Wireless Broadband), Measurement, Correlation, RSSI(Received Signal Strength Indicator), MOS 사용자 체감 품질, VoIP 서비스, 와이브로, 품질 측정, 상관관계, RSSI  ...  Adopting the real measurements on the field, a various quality metric have been measured for VoIP(voice over IP) service provided through a wireless interface of WiBro(Wireless Broadband).  ...  측정된 네트워크 품질 지표들의 값을 이 용하여 E-Model에 근거한 R 값을 산출하고 이를 근 거로 최종적으로 MOS 값을 산출할 수 있다. 3.2 MOS 값의 측정 음성 서비스의 사용자 체감 품질을 측정하기 위한 방법으로는 PESQ (Perceptual Evaluation of Speech Quality)와 E-Model 두 가지 방법이 있다[9].  ... 
doi:10.13067/jkiecs.2014.9.6.719 fatcat:5r3x2lail5f5tf2uwtebegf2sa

Architecture of an Enhanced Packet-Optical Transport System

Kyung Gyu Chun, Yool Kwon, Hongju Kim, Jongtae Song
2014 International Journal of Multimedia and Ubiquitous Engineering  
Our results show that ePOTS can provide multimedia services efficiently and reduce the network cost by around one-third that of a multiprotocol label switching network.  ...  We present an enhanced packet optical transport system (ePOTS) to cope with the CAPEX/OPEX issues of current networks, and explain the system's major features, its potential services, and network deployment  ...  Ultimately, PTL over WDM will cover the entire core network by replacing IP/MPLS and OXC.  ... 
doi:10.14257/ijmue.2014.9.4.07 fatcat:jgih3g2ipnefve3mjrf46xof5u

Experiments of VoIP using WiMAX system and fading simulator with two-path models for aeronautical scenarios

Kazuyuki Morioka, Naoki Kanada, Shunichi Futatsumori, Akiko Kohmura, Naruto Yonemoto, Yasuto Sumiya, David Asano
2014 2014 Integrated Communications, Navigation and Surveillance Conference (ICNS) Conference Proceedings  
On the other hand, in takeoff and landing scenarios when the mobile speed is over 300 km/h, it is difficult to keep the quality of VoIP and some improvements in the receiver are needed.  ...  We evaluate the R-factor when the mobile speed and delay time are changed. We use an R-factor of 80 which is defined in ED-136 as a threshold where VoIP can be used for air traffic control (ATC).  ...  [3] evaluated the quality of VoIP over WiBro which is a WiMAX based system in use in Korea. They used the E-model of ITU-T Recommendation G.107 [2] as a performance measure. Pentikousis, et al.  ... 
doi:10.1109/icnsurv.2014.6820024 fatcat:5hunmx5wsjdp5fgg4bupblo2uy

On the Performance Gains of VoIP Aggregation and ROHC over a WirelessMAN-OFDMA Air Interface

Jarno Pinola, Esa Piri, Kostas Pentikousis
2009 GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference  
In this study, we consider synthetic Voice over IP (VoIP) performance over the WirelessMAN-OFDMA air interface of a state of the art mobile WiMAX testbed operating at the 3.5 GHz frequency band and quantify  ...  Although VoIP aggregation and ROHC have been proposed and thoroughly evaluated through simulation and modeling, this is the first study to present empirical results from employing them over the WirelessMAN-OFDMA  ...  If the number of the VoIP conversations is increased to 36, the average packet loss rate is just over 6%, which exceeds the theoretical quality threshold, but may still allow for decent-quality VoIP conversations  ... 
doi:10.1109/glocom.2009.5425317 dblp:conf/globecom/PinolaPP09 fatcat:e46bablesvcsjpwhrjqfo4bukq

Best-case WiBro performance for a single flow

Shinae Woo, Keon Jang, Sangman Kim, Soohyun Cho, Jaehwa Lee, Youngseok Lee, Sue Moon
2009 Proceedings of the 1st ACM workshop on Mobile internet through cellular networks - MICNET '09  
We measure TCP throughput over WiBro by varying the send buffer and receive buffer sizes.  ...  Our measurement shows that the maximum throughput over the WiBro network is 10 Mbps in downlink and 2.5 Mbps in uplink.  ...  This work was supported by the IT R&D program of MKE/IITA [A1100-0801-2758, "CASFI : High-Precision Measurement and Analysis Research"].  ... 
doi:10.1145/1614255.1614262 fatcat:vskastdzibbtjeuzrmarsf2mxi

Quality Measurement and Analysis of Packet-based Voice Service over WiBro and HSDPA Systems
와이브로와 HSDPA 시스템에서의 패킷 기반 음성 서비스의 품질 측정 및 분석

Chin-Chol Kim, Beom-Joon Kim
2012 The KIPS Transactions PartC  
This paper covers the service quality of packet-based voice service that is provided over wireless broadband (WiBro) and high speed downlink packet access (HSDPA) systems.  ...  Based on our analysis of the measurement results, the service quality of the voice service is supposed to be quite good over both wireless systems.  ...  국제적으로 표준화되어 현재 회선기반의 유선 전화 통화 품질을 측정하기 위해서 널리 사용되고 있는 방법은 크게 PESQ (Perceptual Evaluation of Speech Quality) [9],[10]와 E-Model[11]을 들 수 있다.  ... 
doi:10.3745/kipstc.2012.19c.2.119 fatcat:wytyb6v3pvdezbc776dc7bxokq

Plans and Strategies for UBcN Networks and Services

Eun-Young Lee
2010 Journal of Information Processing Systems  
The author of this paper has taken part in formulating development plans since the early stages of planning.  ...  The paper also discusses the expected impacts of the plan for the future ICT industry, and the implications of government-driven development plans.  ...  Quality standards for the BcN VoIP/Video phone (wired) service were established [5, 6] .  ... 
doi:10.3745/jips.2010.6.3.323 fatcat:l6ngdugbevelzflh4bnltwh7de

Energy-Efficient Packet Aggregation Scheme for VoIP Service in Wireless Multi-Hop Network
무선 멀티 홉 네트워크에서 VoIP 서비스를 위한 효율적인 패킷 결합 기법

Ji-Young Jung, Hyun-Sik Kang, Jung-Ryun Lee
2012 The Journal of Korean Institute of Communications and Information Sciences  
Moreover, we induce a cost function with considering of tradeoff relation between quality of voice and energy consumption.  ...  ABSTRACT This paper proposes packet aggregation scheme for considering energy consumption of mobile devices on guaranteeing quality of voice.  ...  있으며 에너지 소비를 줄이는 장점이 있지만, VoIP의 QoS(Quality of Service) 요구 조건인 종단 간 지연과 패킷손실에 영향을 미쳐 서비스 품질을 저하시키는 단점을 갖는 다.  ... 
doi:10.7840/kics.2012.37b.8.620 fatcat:tqx2a2c3wjcr7o47mgp3oidavq

Capacity estimation and TCP performance enhancement over mobile WiMAX networks

Bong-ho Kim, Jungnam Yun, Yerang Hur, Chakchai So-In, R. Jain, A.-K. Al Tamimi
2009 IEEE Communications Magazine  
Finally, in the last section, we provide simulation results of end-to-end application performance evaluation using the examples of VoIP and a TCP/IP performance-enhancement method that can be implemented  ...  To evaluate the mobile WiMAX system capacity and performance, all the aspects of performance evaluation -from air link to application -are required.  ... 
doi:10.1109/mcom.2009.5116810 fatcat:7wywjnfwbrchzfjnjuux65c62q

VoIP Performance with Aggressive AMC and SINR Feedback for WiMAX Downlink [chapter]

Xiangning Fan, Zhu Dengkui
2009 Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering  
The simulation results show that when the system is in short of bandwidth, these two techniques indeed reduce the PER and delay jitter of the VoIP users, and also enhance the spectrum efficiency.  ...  At the same time, aggressive AMC and frame bundling are two important techniques to improve the performance of VoIP, and so they are applied to WiMAX system in this paper.  ...  While VoIP (Voice over Internet Protocol) is important for future wireless mobile networks and there are many papers which have evaluated VoIP performance for 3GPP 1xEV-DO revision A mobile cellular system  ... 
doi:10.1007/978-3-642-04648-3_22 fatcat:6hmga4x4qnctrfhdmxu3ietlpm

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

Keon Jang, Mongnam Han, Soohyun Cho, Hyung-Keun Ryu, Jaehwa Lee, Yeongseok Lee, Sue B. Moon
2009 Proceedings of the 1st ACM workshop on Mobile internet through cellular networks - MICNET '09  
We present a measurement analysis of the performance of UDP and TCP over 3G and 3.5G wireless networks.  ...  ), and mobile WiMax (e.g., WiBro).  ...  The VoIP quality over WiBro is as good as toll quality whether mobile or not.  ... 
doi:10.1145/1614255.1614261 fatcat:frwltpvshnb6fgi43cb4sti7iq

DiffServ-Aware Pricing for Wireless Internet

Hoon Lee
2012 The Journal of Korean Institute of Communications and Information Sciences  
In this work we propose a new pricing scheme for the wireless Internet services over WiMAX system.  ...  Finally, we present explicit formulae for the packet price, price of consumed radio resource, and price of consumed bytes.  ...  This work is supported by 2011-2012 overseas dispatch program of Changwon national university.  ... 
doi:10.7840/kics.2012.37.7b.550 fatcat:zuqdmmykrzauplri5wqayhvfwa

Measurement and analysis of World of Warcraft in mobile WiMAX networks

Xiaofei Wang, Hyunchul Kim, Athanasios V. Vasilakos, Ted Kwon, Yanghee Choi, Sunghyun Choi, Hanyoung Jang
2009 2009 8th Annual Workshop on Network and Systems Support for Games (NetGames)  
We measure various scenarios for comprehensive analysis of WoW traffic and WiMAX linklayer characteristics. Finally we discuss how to improve the service quality of WiMAX online gaming.  ...  Online games have been played mainly over wired networks due to high speed links and capable desktop computers.  ...  RELATED WORK & MOTIVATION A lot of previous work has been carried out for evaluating WiMAX system, such as general measurement work in [6] , and VoIP measurement in [7] .  ... 
doi:10.1109/netgames.2009.5446236 dblp:conf/netgames/WangKVKCCJ09 fatcat:gbkrmqlzn5hthbkjuvywzjjuly
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