Voice over Internet Protocol (VoIP) over Wireless and Ethernet

Presentation slides, demo slides, and final report (PDF files).

Abstract:
As Voice over Internet Protocol (VoIP) increases in popularity, sooner or later, it will be adapted as the new mean of telecommunication based on its low cost and highly effective solution. In this project, we will examine and compare the performances of VoIP under wireless and Ethernet connections. Analysis of performance on the VoIP connection within a single two-level company scenario, between two companies, and a 3-way call between 3 separate companies will be taken place. Evaluation of jitter, delay and packet loss will be used to dictate whether company should upgrade to a wireless network in a workplace under each scenario. Moreover, situational parameters such as rush hours, and interference will also be discussed and considered when making the decision to determine whether an upgrade will be worthwhile.

References:
[1] A. Raake, "Speech Quality of VoIP: Assessment and Prediction," Hoboken, NJ: Wiley, 2006, pp. 61-64, 78-84.
[2] J. Ellis, C. Pursell, and J. Rahman, "Voice, Video, and Data Network Convergence: Architecture and Design, From VoIP to Wireless," Boston, MA: Academic Press, 2003, pp. 81-102, 117-121.
[3] O. Hersent, J.P. Petit, and D. Gurle, "Beyond VoIP protocols: understanding voice technology and networking techniques for VoIP technology," Hoboken, NJ: Wiley, 2005. [Online]. Available: Simon Fraser University, http://proxy.lib.sfu.ca/login?url=http://library.books24x7.com/library.asp?^B&bookid=12365. [Accessed: March. 10, 2010]
[4] W. C. Hardy, "VoIP Service Quality: Measuring and Evaluating Packet-Switched Voice," New York: McGraw-Hill, 2003, pp. 25-26, 28-48. [Online]. Available: http://site.ebrary.com/lib/sfu/docDetail.action?docID=10042739. [Accessed: March. 14, 2010]
[5] A. Santamaria, and F. J. Lopez-Hernandez, "Wireless LAN standards and applications," Boston : Artech House, c2001, pp. 45-47, 151-160. [Online]. Available: http://library.books24x7.com.proxy.lib.sfu.ca/toc.asp?site=RWH2F&bookid=6413. [Accessed: March. 14, 2010]

Analysis of Quality of Service (QoS) for Video Conferencing in WIMAX Networks

Presentation slides and final report (PDF files).

Abstract:
As Voice over Internet Protocol (VoIP) increases in popularity, sooner or later, it will be adapted as the new mean of telecommunication based on its low cost and highly effective solution. In this project, we will examine and compare the performances of VoIP under wireless and Ethernet connections. Analysis of performance on the VoIP connection within a single two-level company scenario, between two companies, and a 3-way call between 3 separate companies will be taken place. Evaluation of jitter, delay and packet loss will be used to dictate whether company should upgrade to a wireless network in a workplace under each scenario. Moreover, situational parameters such as rush hours, and interference will also be discussed and considered when making the decision to determine whether an upgrade will be worthwhile.

Abstract:
WiMAX (Worldwide Interoperability for Microwave Access) certified telecommunication technology is also known as the IEEE 802.16 standard. This technology is revolutionizing the broadband wireless world by enabling the formation of a global wireless industry. WiMAX provides a theoretical maximum data rate of 75 Mbps on a single channel, and is designed to deliver next-generation high-speed mobile voice, video, and data services to a large geographical area.

WiMAX has the ability to support various types of applications, such as web browsing, e-mail, and file transfer. However, for applications that require real-time response, such as VoIP, streaming video and video conferencing, its Quality of Service (QoS) is inferior to traditional wired Internet due to packet loss over long distances.

For this project, we plan to use OPNET to analyze the QoS of WiMAX for video conferencing applications. Specifically, we will analyze delay, jitter, and packet loss in the video streams transported over the WiMAX network over long distances.

References:
[1] W. Hrudey and L. Trajkovic. (2009). Streaming Video Content Over IEEE 802.16/WiMAX Broadband Access [Online]. Available: http://www.ensc.sfu.ca/~ljilja/papers/hrudey_trajkovic_opnetwork2008_final_revised_again.pdf
[2] M. Bakshi. (2006).VoIP / Multimedia over WiMAX (802.16) [Online]. Available: http://www.cse.wustl.edu/~jain/cse574-06/ftp/wimax_voip.pdf
[3] M. Brain and E. Grabianowski. (2008, October 30). How WiMAX Works [Online]. Available: http://www.howstuffworks.com/wimax1.htm
[4] WiMAX Forum [Online]. Available: http://www.wimaxforum.org/
[5] I. Papapanagiotou, D. Toumpakaris, J. Lee, and M. Devetsikiotis, "A Survey on Next Generation Mobile WiMAX Networks: Objectives, Features and Technical Challenges," IEEE Commun. Surveys & Tutorials, vol. 11, no. 4, pp. 3-18, Fourth Quarter 2009.

Evaluation of Online Gaming Traffic over WIMAX

Presentation slides and final report (PDF files).

Abstract:
The goal of this project is to simulate online gaming traffic over a Worldwide Interoperability for Microwave Access (WiMAX) network. Over the past couple of years, WiMAX has been gaining popularity as an IP-based wireless access network due to its suitability for mobile users compared to Wireless Local Area Network (WLAN) technology. Since, a high quality of service for both the video and audio signals is essential for online gaming, the project will focus on measuring quantities such as delay and jitter, latency and bandwidth consumption for various online gaming traffic loads. We will use OPNET as the simulation tool for this project.

References:
[1] W. Hrudey, "Streaming Video Content over IEEE 802.16/WiMAX Broadband Access," April 2008.
[2] J. Färber, "Network game traffic modelling," University of Stuttgart, April 16-17, 2002
[3] S. Chiu, "Evaluation of Interactive Gaming Traffic over 802.11 Network", ENSC 835: High Performance Networks Final Project, Simon Fraser University, Apr. 2006.
[4] M. Claypool, D. LaPoint, J. Winslow, "Networking Analysis of Counter-strike and Starcraft," Worcester Polytechnic Institute, 2003.
[5] P. Svoboda, W. Karner, and M. Rupp, "Traffic Analysis and Modeling for World of Warcraft," Vienna University of Technology, Austria.
[6] Raj Jain, WiMax System Level Modeling Methodology: A Tutorial. WiMax F2F Meeting, Taipei, Taiwan, Oct 24, 2007
[7] X. Wang, H.-C. Kim, T. Kwon, Y. Choi, S. Choi, and H, Jang, "Measurement and Analysis of World of Warcraft in Mobile WiMAX Networks," ACM SIGCOMM Workshop on Network and System Support for Games (NetGames), Paris, France, Nov. 2009.

Comparison of 3G and City-Wide Wi-Fi Networks Using OPNET Simulations

Presentation slides, demo slides 1, demo slides 2, and final report (PDF files).

Abstract:
With the demand and popularity of smart-phones in today's market, 3G networks are more frequently experiencing an overload in data traffic. Due to this strain, more consumers are switching to the usage of Wi-Fi features on their devices. Currently, users are only able to take advantage of this feature in certain hot-spots, providing their device is Wi-Fi compatible. This brings back a movement that was proposed several years ago: City-wide Wi-Fi. This technology involves blanketing an entire city with Wi-Fi. The implementation was previously unsuccessful because of the low demand from consumers and the lack of technology to utilize it. However, the idea of City-wide Wi-Fi has recently resurfaced as a method to assist in off-loading traffic from the 3G networks and provide consumers with better usage experience. Through simulations of 3G and City-wide Wi-Fi networks, this project will analyze the benefits of each network under various scenarios and determine whether the implementation of City-wide Wi-Fi networks should be considered.

References:
[1] D. Celentano, A. Fresa, M. Longo, and A.L. Robustelli, "Improved authentication for IMS registration in 3G/WLAN interworking", PIMRC 2007, Athens, Dec. 2007, pp. 1-5.
[2] J.P. Shim, S. Shin and M. B.H. Weiss, "Wireless Internet competition: municipal wireless vs. 3G mobile service," WTS 2007, Pomona, CA, July 2007, pp. 1-6.
[3] "Offload: Why 3G's Data Dilemma Will be the Re-Birth of Citywide Wi-Fi", retrieved 3rd February 2010 from http://www.dailywireless.org/2009/11/11/3g%E2%80%99s-data-dilemma-the-re-birth-of-citywide-wi-fi/
[4] "City wants WiFi network by 2010", retrieved 10th February 2010 from http://www.canada.com/vancouversun/news/westcoastnews/story.html?id=4bf90196-3aac-4056-b05e-b0db4b63cd4c
[5] Novarum, "2010: Guidelines for successful large scale outdoor Wi-Fi networks", Novarum, December 2009. [Online]. Available: http://novarum.com/documents/Guidelines%20for%20Large%20Scale%20Outdoor%20WiFi%202010.pdf [Accessed: March 12, 2010].

Comparison of the Quality of Service (QoS) of the 802.11e and the 802.11g wireless LANs

Presentation slides, demo slides, and final report (PDF files).

Abstract:
For this project, we propose to compare the 802.11g and the 802.11e Wireless Local Area Network (WLANs). The 802.11g WLAN standards are good for data applications. However, the 802.11g standard is not well-equipped to deal with the intended delay and bandwidth requirements of multimedia applications, such as video and voice over wireless IP. For this reason, an approved amendment (802.11e) was added to the IEEE 802.11 standard. The 802.11e implements Quality of Service (QoS), which enables features through changes in the Medium Access Control (MAC) layer. The performance of 802.11e will be evaluated using OPNET simulation and compared with the 802.11g WLAN standard.

References:
[1] IEEE Std 802.11e-2005, "Standard for Information Technology - Telecommunications and Information Exchange Between Systems - Local and Metropolitan Area Networks - Specific Requirements - Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications: Amendment: Medium Access Control (MAC) Quality of Service Enhancements", November 2005.
[2] J. LaRocca and R. LaRocca, 802.11 Demystified. Toronto: Macgraw-Hill, 2007, pp. 38-46.
[3] N. Cranley and M. Davis, "QoS for multimedia streaming applications over IEEE 802.11b and 802.11e WLANs" in Wireless Quality of Service: Technique, standards, and applications, M. Ma, M. K. Denko, Y. Zhang, Ed. Boca Raton, Fla.: Auerbach Publications, 2009, pp. 57-86.
[4] T. Alexander, Optimizing and Testing WLANs: Proven techniques for maximum performance. Amsterdam, Boston: Elsevier Newnes, 2007, pp. 150-163.
[5] Y-K. R. Kwok and V. K. N. Lau, Wireless Internet and Mobile Computing: Interoperability and performance. Hoboken, N.J.: Wiley-Interscience: IEEE Press, 2007, pp. 272-278.

Analysis of Long Distance 3-Way Voice Conferencing with VoIP

Presentation slides and final report (PDF files).

Abstract:
VoIP is an alternative to circuit-switched networks. It provides a means of communication using IP networks over local and long distances. In recent times, VoIP has been responsible for drastically cutting the cost of long-distance calls, and as such, it has seen an increase in popularity. This project will analyze the performance of long distance 3-way voice conference calling using VoIP. Performance will be evaluated by examining packet loss, end-to-end packet delay, delay jitter, and speech quality during a conference call. We will attempt to test the network by varying voice codecs, background and link loads, and other parameters, which might affect the overall user experience. A voice call can be modeled using the traffic importer tool in OPNET. Then through testing, we can determine the call quality through subjective and quantitative means.

References:
[1] H. Schulzrinne, S. Casner, R. Frederick, and V. Jacobson, "RTP: A transport protocol for real-time applications," IETF RFC 3550, Jul. 2003.
[2] J. Rosenberg, H. Schulzrinne, G. Camarillo, A. Johnston, J. Peterson, R. Sparks, M. Handley, and E. Schooler, "SIP: Session Initiation Protocol," IETF RFC 3261, Jun. 2002.
[3] B. Goode, "Voice Over Internet Protocol VoIP," Proc. IEEE, vol. 90, pp. 1495- 1516, Sept. 2002.
[4] S. Garg, and M. Kappes, "Can I add a VoIP call?" IEEE, 2003.
[5] P. Smith, P. Kabal, and R. Rabipour, "Speaker Selection For Tandem-Free Operation VoIP Conference," Proc. IEEE Workshop Speech Coding, pp. 120- 122, Oct. 2002.
[6] C. Boutremans, G. Iannaccone, and C. Diot, "Impact of link failures on VoIP performance," Proc. NOSSDAV, May 2002.
[7] R. G. Cole and J. H. Rosenbluth, "Voice over IP performance monitoring," Computer Communication Review, vol. 31, no. 2, pp. 9-24, April 2001.

Implementation of the Gnutella Protocol

Presentation slides and final report (PDF files).

Abstract:
BitTorrent, Gnutella and uTP are P2P protocols. They are mainly used for large file sharing. BitTorrent is the most commonly used protocol. Gnutella accounts for 40% of the market [6]. Up to Feb 2009, only BitTorrent accounts for approximately 22%-57% of all Internet traffic [6]. Thus, P2P bring a burden to the Internet. Many ISPs limit the speed of transmission of P2P applications. In order to decrease the load of the Internet, uTP protocol was developed. uTP protocol can adjust the speed transmission automatically according to the actual Internet situation. This project will just focus on the implementation of Gnutella protocol. We will test the protocol in different network topologies.

References:
[1] J. Cardoso and M. Lytras, Semantic Web engineering in the knowledge society, Hershey, PA, 2009.
[2] L. Alfred and W. Sing, Peer-to-peer computing : building supercomputers with Web technologies / Alfred Wai-Sing Loo. Springer : London, 2007.
[3] A. Dufour, Improving the performance of the Gnutella network. Simon Fraser University: Burnaby B.C 2006.
[4] "The Gnutella specification v0.4". www9.limewire.com/developer/gnutella_protocol_0.4.pdf. Retrieved 2010-03-14
[5] S. Osama, Modeling and caching of peer-to-peer traffic. Burnaby B.C: Simon Fraser University, 2006
[6] D. Worthington; M. Nate (25 May 2005). "BitTorrent Creator Opens Online Search". BetaNews. http://www.betanews.com/article/BitTorrent_Creator_Opens_Online_Search/1117065427. Retrieved 2006-05-09.

The advantages of Wi-Fi P2P

Presentation slides and final report (PDF files).

Abstract:
In the recent years, WI-FI P2P which is also named WI-FI Direct becomes a new technology to support the development in local area networks. Although the traditional Wi-Fi allows local area networks transit signal without wires connected between client and relative devices, which increase the mobility and flexibility. With the distance increasing from outdoor areas or historical buildings the power of signal will decrease dramatically. This project will investigate the performance of WI-FI P2P, mainly focus on the advantage of a higher transit speed, wider expansion scope and perform the relative work between different IP devices. WI-FI P2P is based on the development of WI-FI and with this two advantages, enable WI-FI P2P to support more devices and offer a stable network.

References:
[1] Wi-Fi CERTIFIED? Wi-Fi Direct Frequently Asked Questions:
[2] http://www.wi-fi.org/files/20091019_Wi-Fi_Direct_FAQ.pdf
[3] http://www.wi-fi.org/discover_and_learn.php
[4] http://www.smartphonemag.com/cms/blogs/3/a_tutorial_to_setting_up_and_using_wi_fi
[5] http://p2pfoundation.net/WiFi_P2P
[6] Wi-Fi: http://en.wikipedia.org/wiki/Wi-Fi

Machine to Machine Communication in Ad-Hoc Mesh Networks

Presentation slides, demo slides, and final report (PDF files).

Abstract:
Machine to machine communication has long been considered a feature of the next technological age. Networking options available today are either too expensive or cumbersome to justify the information they are able to provide (such as dedicated wired Ethernet or cellular data modems), or do not provide uniform connectivity (such as WiFi). An alternate solution is to use ad-hoc mesh networking. This project will simulate either ZigBee or 802.11s mesh networks in OPNET analyzing delay and packet loss. Time permitting, it will then be extended to simulate and analyze to store-carry-forward or message ferrying techniques in sparse and partitioned networks.

References:
[1] Davis, J. A., Fagg, A. H., and Levine, B. N. 2001. Wearable Computers as Packet Transport Mechanisms in Highly-Partitioned Ad-Hoc Networks. In Proceedings of the 5th IEEE international Symposium on Wearable Computers (October 08 - 09, 2001). ISWC. IEEE Computer Society, Washington, DC, 141.
[2] Zhao, W., Ammar, M., and Zegura, E. 2004. A message ferrying approach for data delivery in sparse mobile ad hoc networks. In Proceedings of the 5th ACM international Symposium on Mobile Ad Hoc Networking and Computing (Roppongi Hills, Tokyo, Japan, May 24 - 26, 2004). MobiHoc '04. ACM, New York, NY, 187-198. DOI= http://doi.acm.org/10.1145/989459.989483
[3] N Qasim, F Said, H Aghvami, "The Internet Standards Process," IAENG International Journal of Computer Science, Feb.2009. [Online]. Available: http://www.iaeng.org/IJCS/issues_v36/issue_1/IJCS_36_1_10.pdf. [Accessed: Jan. 15, 2010].
[4] Bin Tariq, M. M., Ammar, M., and Zegura, E. 2006. Message ferry route design for sparse ad hoc networks with mobile nodes. In Proceedings of the 7th ACM international Symposium on Mobile Ad Hoc Networking and Computing (Florence, Italy, May 22 - 25, 2006). MobiHoc '06. ACM, New York, NY, 37-48. DOI= http://doi.acm.org/10.1145/1132905.1132910
[5] Small, T. and Haas, Z. J. 2005. Resource and performance tradeoffs in delay-tolerant wireless networks. In Proceedings of the 2005 ACM SIGCOMM Workshop on Delay-Tolerant Networking (Philadelphia, Pennsylvania, USA, August 26 - 26, 2005). WDTN '05. ACM, New York, NY, 260-267. DOI= http://doi.acm.org/10.1145/1080139.1080144

Performance Analysis of Mobile VoIP Calls over WIMAX Network

Presentation slides, demo slides, and final report (PDF files).

Abstract:
As wireless networking gets developed, the range of the wireless signal becomes one of the key issues of factors that affect the quality of signal. Since WiMAX has been developed due to its broad coverage or long range wireless network, voice over IP (VoIP) has become an alternative application of WiMAX network. This project will investigate the environment variables that affect the quality of service (QoS) on internet protocol telephony over WiMAX based mobile network station.

References:
[1] J. G. Andrews, Fundamentals of WiMAX : understanding broadband wireless networking / Jeffrey G. Andrews, Arunabha Ghosh, Rias Muhamed, Upper Saddle River, N.J. Prentice Hall, 2007.
[2] R. K. Rao, WiMAX : a wireless technology revolution / G.S.V. Radha Krishna Rao, G. Radhamani, Boca Raton, Auerbach Publications, c2008
[3] M. Baratvand, M. Tabandeh, A. Behboodi, and A. F. Ahmadi, "Jitter-Buffer Management for VoIP over Wireless LAN in a Limited Resource Device," IEEE Fourth International Conference on Networking and Services, Tehran, Iran, March 2008, pp 90-95.
[4] E. Crozier and A. Klein. (2007) WiMAX¡¯s technology for LOS and NLOS environments. [Online]. Available: http://www.wimaxforum.org
[5] Breeze Wireless Communications Ltd. (2003) Radio Signal Propagation. [Online]. Available: http://didier.quartier-rural.org
[6] J. Yoo (2009) Performance Evaluation of Voice Over IP on WiMAXand Wi-FiBasedNetworks. [Online]. Available: http://www.sfu.ca/~jty/ensc427/

A Survey on the Effectiveness of Performancef and Stability of the Microchip MiWi Protocol for Sensor Networks

Presentation slides, demo slides, and final report (PDF files).

Abstract:
Since the introduction of the IEEE 802.15.4 wireless personal area network (WPAN) specification, the ZigBee protocol has emerged as the leading solution [1]. However, there are several drawbacks to this protocol which opens the market up to alternatives. The most significant of these drawbacks include a large memory footprint (40-100K) [2] and a higher level of complexity than is necessary for more simple applications, driving up Time To Market (TTM) [1].

The MiWi Protocol was subsequently developed by Microchip Technology Inc. as an alternative to ZigBee with 80% smaller footprint and a resulting lessened complexity [3]. This solution lends itself especially to power and cost sensitive applications, which is often the concern with sensor networks [4].

Via OPNET simulation, this project will examine the effectiveness of performance and stability of the Microchip MiWi protocol as it applies to sensor networks of varied complexity.

References:
[1] Slovati, "MiWi: The Microchip Solution for Short Range Wireless," Mar. 18, 2009. [Online] Available: http://dev.emcelettronica.com/miwi-microchip-solution-short-range-wireless. [Accessed: Feb. 7, 2010].
[2] Microchip Technology Inc., "Protocol Connectivity Solutions," 2009. [Online] Available: http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=2664¶m=en520414. [Accessed: Feb. 7, 2010].
[3] D. Flowers and Y. Yang, "MiWi Wireless Networking Protocol Stack," Application Note 1066, Microchip Technology Inc., 2007.
[4] K. Romer and F. Mattern, "The Design Space of Wireless Sensor Networks," IEEE Wireless Communications, vol. 11, no. 6, pp. 54-61, Dec. 2004.
[5] I. S. Hammoodi, B. G. Stewart, A. Kocian, and S. G. McMeekin, "A Comprehensive Performance Study of OPNET Modeler for ZigBee Wireless Sensor Networks" Next Generation Mobile Applications, Services and Technologies, 2009. NGMAST '09. Third International Conference on, pp.357-362, 15-18 Sept. 2009.

Comparison of VoIP over H323 ad SIP protocols

Presentation slides, demo slides, and final report (PDF files).

Abstract:
VoIP is a transmission technology over IP networks to deliver voice communication. It allows people to exchange voice information with a very low cost world widely; also it develops so fast that becomes an alternative to landline phone service. There are several protocols involved in VoIP, such as H323, SIP, MGCP, IAX2 and N2P. In our project, we will focus on H323 and SIP (Session Initiation Protocol); we will research how they basically work to provide VoIP service. We also will investigate the differences between these two protocols and effect on VoIP call quality; obtain several advantages and disadvantages of each for comparison.

References:
1. Voice over Internet Protocol, http://en.wikipedia.org/wiki/Voice_over_Internet_Protocol
2. How VoIP works, Robert Valdes and Dave Roos, http://communication.howstuffworks.com/ip-telephony.htm
3. H.323,http://en.wikipedia.org/wiki/H.323
4. Session Initiation Protocol,http://en.wikipedia.org/wiki/Session_Initiation_Protocol
5. Canada VoIP providers,http://www.voipchoices.com/voip-canada.html

Wi-Fi

Presentation slides, demo slides, and final report (PDF files).

Abstract:
In today's technology, Wi-Fi is a well known term for everyone and its presence is often near around us; in a coffee shop, at school, and also at home. Nevertheless, we have often experienced the speed of wireless transmission is not really what we expected; therefore we are interested in analyzing and investigating the aspect of Wi-Fi bandwidth transmission. The main direction for this project will be focused on "Wi-Fi." The idea will be working toward to any of these 4 options:
1. Bandwidth vs. Number of Users
2. Bandwidth vs. Distance
3. Signal Strength of Different standard (a/b/g/n)
4. The performance of Wi-Fi in streaming video

References:
[1] Six Competitive Factors for Wi-Fi HotSpot Success from http://www.wi-fitechnology.com/
[2] Lecture 4 CPSC 417 from University of British Columbia
[3] Wireless Internet Access: 3G vs. WiFi? from MIT by Lehr & McKnight
[4] Wifi struncture from http://nostarch.com/
[5] Deployment of MAC Address Authentication based on Freeradius from http://www.wi-fitechnology.com/

Analysis of Voice Over IP Performance on UMTS Networks

Presentation slides, demo slides, and final report (PDF files).

Abstract:
Voice over IP (VoIP) has revolutionized the telephone industry. VoIP transcends limitations of traditional phone service (most notably expensive long distance phone calls) and brings the world closer together. Universal Mobile Telecommunications System (UMTS) networks are the next generation in mobile communication. They allow for the high speeds required to utilize VoIP, while providing the freedom of mobility. The focus of this project is on analyzing the quality of VoIP calls using UMTS networks and comparing it to a typical wired broadband internet connection.

References:
[1] Wireless IP and building the mobile Internet / Sudhir Dixit, Ramjee Prasad, editors. Published Boston, MA : Artech House, c2003.
[2] Essentials of UMTS / Christopher Cox. Published Cambridge, UK ; New York : Cambridge University Press, c2008.
[3] Effective VoIP Call Routing in WLAN and Cellular Integration Yi-Bing Lin, Fellow, IEEE, Whai-En Chen, Member, IEEE, and Chai-Hien Gan, Member, IEEE COMMUNICATIONS LETTERS, VOL. 9, NO. 10, OCTOBER 2005
[4] Ari Ahtiainen, Heikki Kaaranen, Lauri Laitinen, Siam Naghian, and Valtteri Niemi. UMTS Networks: Architecture, Mobility and Services. 2 ed. New York, NY: Wiley, 2005.
[5] David Soldani. QoS and QoE Management in UMTS Cellular Systems. New York, NY: Wiley, 2006.

Performance Comparison of TCP, P2P, and P2SP Internet Protocols

Presentation slides, demo slides, and final report (PDF files).

Abstract:
VoIP is not a new technology; however, due to much better internet infrastructures in recent years, VoIP had gained much popularity mainly because of its lower costs, especially costs towards the end users. Part of the lower operating cost comes from the fact that VoIP can be implemented with better compression ratio, or better audio codec, therefore it often uses much lower bandwidth. Also, because VoIP can be implemented not only on a hardware phone, but also inside a virtual software phone, it can significantly simplify people¡¯s daily tasks. The main VoIP protocols used are SIP, H.323 and IAX, but this paper will focused mainly on implementation and analysis of SIP protocols.

References:
[1] Olejniczak, Stephen P., ¡° Reviewing VoIP Basics¡±, VoIP deployment for dummies, Hoboken, N.J.,2009, pp.10-12.
[2] Dwivedi, Himanshu., ¡°An Introduction to VoIP Security¡±, Hacking VoIP, Sebastopol, Calif.,2009, pp.10-12.
[3] Bates, Regis J. "Bud, ¡°Voice-over IP (VoIP)¡±, Voice-over IP(VoIP), Blacklick, OH, USA, 2002, pp.537-538.
[4] Hersent, Olivier., ¡°Voice Quality¡±, Beyond VoIP Protocols: Understanding Voice Technology and Networking Techniques for IP Telephony, Hoboken, NJ, 2005, pp.377-380.
[5] Fine-tuning Voice over Packet service[Online]. Available: http://www.protocols.com/papers/voip2.htm.