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Journal articles on the topic 'VoIP, WLAN'

Author: Grafiati

Published: 4 June 2021

Last updated: 17 February 2022

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1

Nisar, Kashif, Angela Amphawan, and Suhaidi B. Hassan. "Comprehensive Structure of Novel Voice Priority Queue Scheduling System Model for VoIP Over WLANs." International Journal of Advanced Pervasive and Ubiquitous Computing 3, no. 4 (2011): 50–70. http://dx.doi.org/10.4018/japuc.2011100106.

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Voice over Internet Protocol (VoIP) has grown quickly in the world of telecommunication. Wireless Local Area Networks (WLANs) are the most performance assuring technology for wireless networks, and WLANs have facilitated high-rate voice services at low cost and good flexibility. In a voice conversation, each client works as a sender or a receiver depending on the direction of traffic flow over the network. A VoIP application requires high throughput, low packet loss, and a high fairness index over the network. The packets of VoIP streaming may experience drops because of the competition among

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2

Nisar, Kashif. "Voice Priority Queue Scheduling System Models for VoIP over WLANs." International Journal of Information Communication Technologies and Human Development 5, no. 1 (2013): 36–59. http://dx.doi.org/10.4018/jicthd.2013010103.

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The Voice over Internet Protocol (VoIP) is a delay sensitive traffic due to real-time applications on networks. The assessment of voice flow quality in the VoIP is an essential requirement for technical and commercial motivation. The packets of VoIP streaming may experience drops because of the competition among the different kinds of traffic flow over the network. A VoIP application is also sensitive to delay and requires the voice packets to arrive on time from the sender to the receiver side without any delay over WLAN. The scheduling system model for VoIP traffic is an unresolved problem.

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3

Musbah, Esra Musbah Mohammed, Khalid Hamed Bilal, and Amin Babiker A. Nabi Mustafa. "Comparison of QoS Performance Over WLAN, VoIP4 and VoIP6." International Research Journal of Management, IT & Social Sciences 2, no. 11 (2015): 42. http://dx.doi.org/10.21744/irjmis.v2i11.80.

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VoIP stands for voice over internet protocol. It is one of the most widely used technologies. It enables users to send and transmit media over IP network. The transition from IPv4 to IPv6 provides many benefits for internet IPv6 is more efficient than IPv4. This paper presents a performance analysis of VoIP over WLAN using IPv4 and IPv6 and OPNET software program to simulate the protocols and to investigate the QoS parameters such as jitter, delay variation, packet send, and packet received and throughputs for IP4 and IP6 and compare between them.

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4

Deyun Gao, Jianfei Cai, Chuan Heng Foh, Chiew-Tong Lau, and King Ngi Ngan. "Improving WLAN VoIP Capacity Through Service Differentiation." IEEE Transactions on Vehicular Technology 57, no. 1 (2008): 465–74. http://dx.doi.org/10.1109/tvt.2007.905245.

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5

Sung, Ya-Chin, and Yi-Bing Lin. "IPsec-Based VoIP Performance in WLAN Environments." IEEE Internet Computing 12, no. 6 (2008): 77–82. http://dx.doi.org/10.1109/mic.2008.128.

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6

Upadhyay, Suchi, S. K. Singh, Manoj Gupta, and Ashok Kumar Nagawat. "Improvement in Performance of the VoIP over WLAN." International Journal of Computer Applications 12, no. 4 (2010): 12–15. http://dx.doi.org/10.5120/1667-2245.

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7

Nisar, Kashif, Angela Amphawan, Suhaidi Hassan, and Nurul I. Sarkar. "A comprehensive survey on scheduler for VoIP over WLAN." Journal of Network and Computer Applications 36, no. 2 (2013): 933–48. http://dx.doi.org/10.1016/j.jnca.2012.07.019.

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8

Yi-Bing Lin, Whai-En Chen, and Chai-Hien Gan. "Effective VoIP call routing in WLAN and cellular integration." IEEE Communications Letters 9, no. 10 (2005): 874–76. http://dx.doi.org/10.1109/lcomm.2005.10027.

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9

Munasinghe, Kumudu S., M. Rubaiyat Kibria, and Abbas Jamalipour. "Designing VoIP session management over interworked WLAN-3G networks." IEEE Wireless Communications 15, no. 4 (2008): 86–94. http://dx.doi.org/10.1109/mwc.2008.4599226.

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10

Qi, Emily, Sangeetha Bangolae, Kapil Sood, and Jesse Walker. "BSS transition optimizations and analysis for VoIP over WLAN." Wireless Personal Communications 43, no. 3 (2007): 907–18. http://dx.doi.org/10.1007/s11277-007-9264-5.

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11

Mohd Ali, Ali, Mahmoud Dhimish, Malek M. Alsmadi, and Peter Mather. "An Algorithmic Approach to Identify the Optimum Network Architecture and WLAN Protocol for VoIP Application." Wireless Personal Communications 119, no. 4 (2021): 3013–35. http://dx.doi.org/10.1007/s11277-021-08383-6.

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AbstractTo determine the optimal network architecture between the Basic Service Set, the Extended Service Set and the Independent Basic Service Set, this study established a new algorithm to assess Voice over Internet Protocol (VoIP) metrics of different IEEE 802.11 technologies. An important coefficient for each VoIP metric parameter has been invented to rank the different IEEE 802.11 standards and to identify the most efficient one for the VoIP application. The best overall network performance that offers good voice quality is ensured by determining the optimum network architecture and techn

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12

Nisar, Kashif, and Suhaidi B. Hassan. "The VPQ Scheduler In Access Point For VoIP Over WLAN." International Journal of Mobile Network Communications & Telematics 1, no. 2 (2011): 21–37. http://dx.doi.org/10.5121/ijmnct.2011.1202.

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13

Cai, Lin, Yang Xiao, Xuemin (Sherman) Shen, Lin Cai, and Jon W. Mark. "VoIP over WLAN: voice capacity, admission control, QoS, and MAC." International Journal of Communication Systems 19, no. 4 (2006): 491–508. http://dx.doi.org/10.1002/dac.801.

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14

Kholaif, Ahmad M., and Terence D. Todd. "WLAN VoIP capacity allocation using an adaptive voice packetization server." Computer Communications 30, no. 13 (2007): 2661–75. http://dx.doi.org/10.1016/j.comcom.2007.06.008.

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15

Núñez-Lira, Luis Alberto, Marco Aurelio Rosario Villarreal, Javier Francisco Javier Márquez Camarena, and Janeth Bertha Mariño Arroyo. "Evaluation of a wireless Broadband Network for VoIP in Huaytará." Enfoque UTE 10, no. 4 (2019): 28–44. http://dx.doi.org/10.29019/enfoque.v10n4.513.

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Consiste en diseñar y evaluar el rendimiento de una red inalámbrica de banda ancha en la provincia de Huaytará, para la conectividad a internet. Es una investigación aplicada y experimental donde se evaluó los parámetros de rendimiento de la red. La variable dependiente es la capacidad de la celda Wlan y los parámetros de QoS; y como variables independientes la cobertura y la densidad de la red Wlan. Se puede afirmar que para radios de hasta 8 metros, la tasa de datos del cliente experimental es superior a la tasa de datos del cliente control, y para radios mayores a 15 metros, las tasas de da

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16

Sangho Shin and H. Schulzrinne. "Measurement and Analysis of the VoIP Capacity in IEEE 802.11 WLAN." IEEE Transactions on Mobile Computing 8, no. 9 (2009): 1265–79. http://dx.doi.org/10.1109/tmc.2009.49.

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17

Tsao, Shiao-Li, and Chung-Huei Huang. "An energy-efficient transmission mechanism for VoIP over IEEE 802.11 WLAN." Wireless Communications and Mobile Computing 9, no. 12 (2009): 1629–44. http://dx.doi.org/10.1002/wcm.747.

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18

Kamarudin, Nur Khairani, Nur Syafiqa Bismi, Nurul Hidayah Ahmad Zukri, Mohd Faris Mohd Fuzi, and Rashidah Ramle. "Network Security Performance Analysis of Mobile Voice Over Ip Application (mVoIP): Kakao Talk, WhatsApp, Telegram and Facebook Messenger." Journal of Computing Research and Innovation 5, no. 2 (2020): 21–27. http://dx.doi.org/10.24191/jcrinn.v5i2.136.

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VoIP application usage has increased from time to time and makes our daily life more convenient. VoIP application has features to make a phone call, send a text message and share the file through the apps for free. However, most of the users did not seem aware of VoIP security features such as authentication ability, password encryption ability, or voice or audio and text communication encryption ability. It is essential to ensure the VoIP used is secure from password decrypter and eavesdrops the user conversation. Thus, the first objective of this research was to study and investigate VoIP ap

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19

Bellalta, Boris, Michela Meo, and Miquel Oliver. "VoIP Call Admission Control in WLANs in Presence of Elastic Traffic." Journal of Communications Software and Systems 2, no. 4 (2017): 322. http://dx.doi.org/10.24138/jcomss.v2i4.277.

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VoIP service over WLAN networks is a promising alternative to provide mobile voice communications. However, several performance problems appear due to i) heavy protocoloverheads, ii) unfairness and asymmetry between the uplink and downlink flows, and iii) the coexistence with other traffic flows. This paper addresses the performance of VoIP communications with simultaneous presence of bidirectional TCP traffic, and shows how the presence of elastic flows drastically reduces the capacity of the system. To solve this limitation a simple solution is proposed using an adaptive Admission and Rate C

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20

Ali, Ali Mohd, Mahmoud Dhimish, Malek M. Alsmadi, and Peter Mather. "Algorithmic Identification of the Best WLAN Protocol and Network Architecture for Internet-Based Applications." Journal of Information & Knowledge Management 19, no. 01 (2020): 2040011. http://dx.doi.org/10.1142/s0219649220400110.

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This research developed a novel algorithm to evaluate internet-based services such as VoIP, Video Conferencing, HTTP and FTP, of different IEEE 802.11 technologies in order to identify the optimum network architecture among Basic Service Set (BSS), Extended Service Set (ESS) and the Independent Basic Service Set (IBSS). The proposed algorithm will yield the rank order of different IEEE 802.11 technologies. By selecting the optimum network architecture and technology, the best overall network performance that provides good voice, video and data quality is guaranteed. Furthermore, it meets the a

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21

Gurrapu, Shreekant, Saurabh Mehta, and Shraddha Panbude. "Comparative Study for Performance Analysis of VOIP Codecs Over WLAN in Nonmobility Scenarios." International Journal of Information Technology, Modeling and Computing 4, no. 4 (2016): 01–16. http://dx.doi.org/10.5121/ijitmc.2016.4401.

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22

Jang, Sung-Bong, and Young-Gab Kim. "An energy-efficient delay reduction technique for supporting WLAN-based VoIP in SmartPhone." Journal of Systems Architecture 57, no. 10 (2011): 934–44. http://dx.doi.org/10.1016/j.sysarc.2011.04.002.

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23

Yu, Jeonggyun, and Sunghyun Choi. "Comparison of modified dual queue and EDCA for VoIP over IEEE 802.11 WLAN." European Transactions on Telecommunications 17, no. 3 (2006): 371–82. http://dx.doi.org/10.1002/ett.1128.

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24

Chen, Reu-Ching, Wei-Tsong Lee, and Jim-Min Lin. "Optimal delay estimation using complete bipartite graph method for VoIP over WLAN environments." Advanced Engineering Informatics 20, no. 4 (2006): 433–41. http://dx.doi.org/10.1016/j.aei.2006.02.001.

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25

Hsieh, Hung-Yun, You-En Lin, and Hsiao-Pu Lin. "Enhancing VoIP service for ubiquitous communication in a campus WLAN with partial coverage." Computer Networks 52, no. 13 (2008): 2489–504. http://dx.doi.org/10.1016/j.comnet.2008.04.010.

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26

Kaur, Simranjeet, and Maninder Singh. "Intra-flow Contention Scheme for Improving QoS in WLAN." International Journal of Advanced Research in Computer Science and Software Engineering 7, no. 8 (2017): 106. http://dx.doi.org/10.23956/ijarcsse.v7i8.33.

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With the increasing popularity of wireless local area network(WLAN),the demand for multimedia services encompassing VoIP, multimedia streaming and interactive gaming is increasing rapidly. The real-time services require stringent Quality of Service (QoS) guarantees for effective communication. While a lot of research has dealt with providing QoS support for real-time services in traditional wired networks, the shared and broadcast nature of the wireless medium necessitates the design of new solutions for wireless networks. In wireless networks, unlike wired networks, the communication from one

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27

Chen, Jen-Jee, Ling Lee, and Yu-Chee Tseng. "Integrating SIP and IEEE 802.11e to support handoff and multi-grade QoS for VoIP-over-WLAN applications." Computer Networks 55, no. 8 (2011): 1719–34. http://dx.doi.org/10.1016/j.comnet.2011.01.005.

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28

Filho, José Quaresma, Nailson Cunha, Robertson Lima, Eudisley Anjos, and Fernando Matos. "A Software Defined Wireless Networking Approach for Managing Handoff in IEEE 802.11 Networks." Wireless Communications and Mobile Computing 2018 (November 21, 2018): 1–11. http://dx.doi.org/10.1155/2018/9246824.

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In Wireless Local Area Networks (WLAN) with more than one access point (AP), the handoff process plays a crucial role to guarantee the user service continuity. Usually initiated by the client’s equipment, it occurs smoothly on the order of seconds. However, despite being functional and well-established, this process can be inadequate in scenarios where users are executing multimedia applications, such as real-time video streaming or VoIP. For these applications, those few seconds may cause loss of packets, resulting in loss of essential information. Because of that, this study proposes a Softw

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29

Chakraborty, Poonam, and Aparna Telgote. "Performance analysis of VoIP under the effect of interference and during conference call in WLAN network using OPNET modeller." International Journal of Intelligent Systems Design and Computing 2, no. 2 (2018): 156. http://dx.doi.org/10.1504/ijisdc.2018.096331.

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30

Telgote, Aparna, and Poonam Chakraborty. "Performance analysis of VoIP under the effect of interference and during conference call in WLAN network using OPNET modeller." International Journal of Intelligent Systems Design and Computing 2, no. 2 (2018): 156. http://dx.doi.org/10.1504/ijisdc.2018.10017636.

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31

Risty, Ammatia, Rendy Munadi, and Ridha Muldina Negara. "Analisis Unjuk Kerja Horizontal Handover Mobile Wimax Mendukung Layanan Mobile TV." JURNAL INFOTEL - Informatika Telekomunikasi Elektronika 8, no. 1 (2016): 47. http://dx.doi.org/10.20895/infotel.v8i1.51.

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IEEE 802.16e-2005 teknologi mobile WiMAX merupakan salah satu alternatif yang dapat memberikan datarate 15 Mbps yang lebih baik daripada teknologi 3G, WLAN, dan lain-lain. Mobile WiMAX juga memberikan cakupan area yang luas. Oleh karena itu, WiMAX mampu memberikan layanan berbagai macam aplikasi multimedia seperti VoIP, IPTV, Video conferencing. dan aplikasi real-time lainnya. Selain itu, Mobile WiMAX juga mendukung mobility secara portable, mobile, dan nomadic. Saat ini IPTV muncul pada mobile phone, yang dinamakan mobile TV dimana layanan IPTV akan dapat diakses dalam keadaan bergerak. Hal i

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32

Kim, Wonjung, Taewon Song, Taeyoon Kim, Hyunhee Park, and Sangheon Pack. "VoIP Capacity Analysis in Full Duplex WLANs." IEEE Transactions on Vehicular Technology 66, no. 12 (2017): 11419–24. http://dx.doi.org/10.1109/tvt.2017.2729590.

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33

Nisar, Kashif, and Suhaidi Hassan. "Mobility of Mobile Station in Voice Priority Queue Scheduler for VoIPWLANs." Journal of Communications and Computer Engineering 2, no. 3 (2011): 28. http://dx.doi.org/10.20454/jcce.2012.249.

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Voice over Internet Protocol (VoIP) is growing rapidly during this decade. VoIP is seen as a short-term and long-trem transmission for voice and audio traffic. Meanwhile, VoIP is moving on Wireless Local Area Networks (WLANs) based on IEEE 802.11 standards. Currently, many packet scheduling algorithms like Weighted Fair Queuing (WFQ), was mainly designed to provide the bandwidth reservation. The Strict Priority (SP) is low-cost to maintain the delay sensitive voice traffic. Also, a number of research scheduling solutions have been proposed like General processor sharing (GPS), Deficit Round Ro

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34

Nisar, Kashif. "Fourth Stage of Voice Priority Queue for VoIP over WLANs." International Journal of Interdisciplinary Telecommunications and Networking 4, no. 2 (2012): 48–63. http://dx.doi.org/10.4018/jitn.2012040104.

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Voice over Internet Protocol (VoIP) is growing rapidly during this decade. VoIP is seen as a short-term and long-term transmission for voice and audio traffic and is moving on Wireless Local Area Networks (WLANs) based on IEEE 802.11 standards. Currently, packet scheduling algorithms like Weighted Fair Queuing (WFQ), was mainly designed to provide the bandwidth reservation. The Strict Priority (SP) is low-cost to maintain the delay sensitive voice traffic. Also, a number of research scheduling solutions have been proposed like General processor sharing (GPS), Deficit Round Robin (DRR), Content

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35

Sfairopoulou, A., B. Bellalta, and C. Macian. "How to tune VoIP codec selection in WLANs?" IEEE Communications Letters 12, no. 8 (2008): 551–53. http://dx.doi.org/10.1109/lcomm.2008.071998.

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36

Vignan, B. Suvarna, and B. Lalu Naick. "Enhanced Distributed Coordination Function of MAC for VoIP Services Using IEEE802.11 Networks." Advanced Materials Research 433-440 (January 2012): 2304–9. http://dx.doi.org/10.4028/www.scientific.net/amr.433-440.2304.

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Voice over Internet Protocol (VoIP) is an important service with strict Quality-of-Service (QoS) requirements with in wireless local area networks. The popular Distributed Coordination Function (DCF) of IEEE802.11 Medium Access Control (MAC) protocol adopts Multiplicative Increase and linear Decrease procedure to reduce the packet collision probability in WLANs. In DCF, the size of contention window is doubled upon a collision regardless of the network loads. This paper presents an enhanced DCF scheme to improve the QoS of VoIP in WLANs. This scheme applies a threshold of the collision rate to

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37

Xiao, Jun, and Feng Liu. "A Pre-Scanning Fast Handoff Scheme for VoIP in WLANs." International Journal of Future Generation Communication and Networking 8, no. 2 (2015): 343–54. http://dx.doi.org/10.14257/ijfgcn.2015.8.2.28.

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38

Yuan, Zhenhui, and Gabriel-Miro Muntean. "iVoIP: an intelligent bandwidth management scheme for VoIP in WLANs." Wireless Networks 20, no. 3 (2013): 457–73. http://dx.doi.org/10.1007/s11276-013-0616-7.

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39

Chin, Kwan-Wu. "On Maximizing VoIP Capacity and Energy Conservation in Multi-Rate WLANs." IEEE Communications Letters 14, no. 7 (2010): 611–13. http://dx.doi.org/10.1109/lcomm.2010.07.100468.

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40

Youm, Sungkwan, and Eui-Jik Kim. "Latency and Jitter Analysis for IEEE 802.11e Wireless LANs." Journal of Applied Mathematics 2013 (2013): 1–9. http://dx.doi.org/10.1155/2013/792529.

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This paper presents a numerical analysis of latency and jitter for IEEE 802.11e wireless local area networks (WLANs) in a saturation condition, by using a Markov model. We use this model to explicate how the enhanced distributed coordination function (EDCF) differentiates classes of service and to characterize the probability distribution of the medium access control (MAC) layer packet latency and jitter, on which the quality of the voice over Internet protocol (VoIP) calls is dependent. From the proposed analytic model, we can estimate the available number of nodes determining the system perf

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41

Politis, Anastasios C., and Constantinos S. Hilas. "CTS-to-self as a protection mechanism for the no acknowledgment protocol in VoIP WLANs." Contemporary Engineering Sciences 11, no. 29 (2018): 1421–35. http://dx.doi.org/10.12988/ces.2018.84136.

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42

Salvador, Pablo, Vincenzo Mancuso, Pablo Serrano, Francesco Gringoli, and Albert Banchs. "VoIPiggy: Analysis and Implementation of a Mechanism to Boost Capacity in IEEE 802.11 WLANs Carrying VoIP Traffic." IEEE Transactions on Mobile Computing 13, no. 7 (2014): 1640–52. http://dx.doi.org/10.1109/tmc.2013.114.

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43

Huhtala, Arto, Kirsi Suhonen, and Teijo Murtovaara. "Sisäpaikannusjärjestelmä karjanhoitajan apuna." Suomen Maataloustieteellisen Seuran Tiedote, no. 23 (January 31, 2008): 1–5. http://dx.doi.org/10.33354/smst.75839.

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Käyttäytymistutkimuksissa on havaittu, että muutokset eläinten käyttäytymisessä indikoivat eläimen terveydentilaa ja hyvinvointia. Automaattinen lehmien seuranta- ja paikannusjärjestelmä voi auttaa karjanhoitajaa havaitsemaan muutokset lehmän käyttäytymisessä ja näin tarkastamaan eläimen terveydentilan ennen kuin vakavia terveysongelmia ehtii muodostua. Automaattinen lehmien seurantajärjestelmä olisi erityisen tarpeellinen suurissa pihattonavetoissa, joissa karjanhoitajan tarkkailuaika / eläin, on alhainen ja pihaton automaatioaste muutoinkin korkea (esim. lypsyrobotti). Seinäjoen ammattikorke

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44

Polojärvi, Katja,, Mika Luimula, Pertti Verronen, Mika Pahkasalo, Markku Koistinen, and Jouni Tervonen. "Täsmäviljelyn paikkatietojen käsittelyn ja yhteensopivuuden kehittäminen." Suomen Maataloustieteellisen Seuran Tiedote, no. 28 (January 31, 2012): 1–7. http://dx.doi.org/10.33354/smst.75582.

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Täsmäviljelyn suunnittelu, toteutus ja arviointi perustuvat paikkatietoihin, joita esimerkiksi työkoneisiin ja maatilaympäristöön sijoitettavat sensorit ja laitteistot keräävät. Laitteistojen kirjo johtaa siihen, että maatilalla tuotettu paikkatieto vaihtelee laadultaan ja on vaikeasti yhdistettävissä toisiinsa. Paikkatiedon tehokas hyödyntäminen viljelyssä edellyttää tietojärjestelmää, jonka avulla viljelijä pystyy yhdistämään maatilan tietoja toisiinsa ja täydentämään niitä ulkopuolisten toimijoiden tuottamilla aineistoilla. Erilaiset tietomallit, -formaatit, rajapinnat ja koordinaattijärjes

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45

"Impact of Channel Bonding on Network Performance in Real-Time Applications." International Journal of Engineering and Advanced Technology 9, no. 1 (2019): 4361–66. http://dx.doi.org/10.35940/ijeat.a1954.109119.

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This paper investigates the impact of channel bonding property provided in wireless technology on performance in real-time applications. IEEE 802.11n is an amendment to the IEEE 802.11 Wireless Local Area Network (WLAN) standard, which aims to extensively improve network throughput over legacy WLANs. This new network technology provides a better performance for general Internet applications such as web service and file transfer. However, the recent network measurements show that real-time application traffic is consistently increasing in the Internet. Real-time applications such as Voice over

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46

Malekar, Rajeshwari, and R. C. Jaiswal. "Analysis and Performance Evaluation of IEEE 802.11 WLAN." International Journal of Computer and Communication Technology, October 2011, 281–86. http://dx.doi.org/10.47893/ijcct.2011.1101.

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With fast deployment of wireless local area networks VoIP over IEEE 802.11 wireless local area network (WLAN) is growing very fast and is providing a cost effective alternative for voice communications. WLANs were initially set up to handle bursty nonreal time type of data traffic. Therefore, the wireless access protocols initially defined are not suitable for voice traffic. Subsequently, updates in the standard have been made to provision for QoS requirements of data, especially the real time traffic of the type voice and video. Despite these updates, however, transmitting voice traffic over

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47

Sánchez-Reyes, Sergio, Mario E. Rivero-Angeles, and Noé Torres-Cruz. "Teletraffic Analysis for VoIP Services in WLAN Systems with Handoff Capabilities." Computación y Sistemas 22, no. 3 (2018). http://dx.doi.org/10.13053/cys-22-3-2749.

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48

Gurrapu, Shreekant, Saurabh Mehta, and Shraddha Panbude. "Comparative Study for Performance Analysis of VOIP Codecs Over WLAN in Nonmobility Scenarios." SSRN Electronic Journal, 2019. http://dx.doi.org/10.2139/ssrn.3389769.

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49

Gurrapu, Shreekant, Saurabh Mehta, and Shraddha Panbude. "Comparative Study for Performance Analysis of VoIP Codecs Over WLAN in Nonmobility Scenarios." SSRN Electronic Journal, 2016. http://dx.doi.org/10.2139/ssrn.3557833.

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50

Gupta, Sanjaya, Vijay Sahu, and Brejesh Lall. "Modified Isochronous Coordination Function for Enhancement of VoIP Call Capacity over IEEE 802.11 WLAN." EURASIP Journal on Wireless Communications and Networking 2008, no. 1 (2007). http://dx.doi.org/10.1155/2008/218076.

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