Final Proposal

Proposal for Research & Development

course work 1

An Analysis of QoS for Multimedia in WiMax Networks Introduction: WiMax (Worldwide Interoperability for Microwave Access), a revolution in broadband wireless access (BWA), a very fast adopted wireless technology. This was introduced by WiMax forum (http://www.wimaxforum.org) in 2001. WiMax is the commercial name of IEEE802.16 standard. From the very beginning till now it is becoming a leading wireless technology to provide broadband service in the wide area networks. As a new technology WiMax is the answer for those questions that was unanswered by the existing technologies such as Wi-fi, Bluetooth, and Zigbee etc. It is called the last mile connectivity as it is capable of transfer more reliable, high speed and secured data within a higher range. In terms of raw transmission capability performance, WiMax is capable to achieve a data rates up to 75 Mb/s with a 20 MHz channel in ideal propagation circumstance as compared to 25 Mb/s with a 20 MHz channel for Wi-Fi (IEEE 802.11.a or g), where it is possible to cover up to 50 Kilo Meter area [1]. WiMax works in both Line-of-Sight and Non Line-of-sight environment. The typical coverage area is around 5 km for non-line-of-sight condition and 15 km for line-of-sight condition [1].

QoS for WiMax Networks: Though it is hard to define Quality of Service (QoS) formally and specifically, according to the International Telecommunication Union (ITU) QoS deffination comprise of 6 broad components: Support,Operability, accessibility,Reliability, Intigrity and Security [3]. The Medium Access Control (MAC) layer is responsible for the quality of service (QoS) mechanism in a WiMax network [3] [4]. The MAC layer defines service flow that enables IP based end-to-end quality of service by scheduling the bandwidth for different users [3]. Different multimedia applications such as voice over IP (VOIP), video conferencing, video on demand (VOD) etc. in a WiMax network, is supported by four types of service flow: Unsolicited Grant Service (UGS), real-time Polling service (rtPS), non-real-time Polling Service (nrtPS) and Best Effort Service (BES) [9]. Service flows are created, deleted and changed by issuing Dynamic Service addition (DSA), Dynamic Service Deletion (DSD) and Dynamic Service Change (DSC) which can be initiated either by the Subscriber Station (SS) or by the Base Station (BS) [3].

Table 1: QoS requirements for different applications [13] Md R I Bhuiyan ID 08033885

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Proposal for Research & Development

course work 1

Aims and Objective: The WiMax network was designed with quality of service (QoS) in mind [3], the aim of this research and development project is to identify and analyse the quality of service that are implemented by the WiMax network for multimedia applications.  Brief understanding of QoS requirements of WiMax network  Identify QoS architecture of integrating different multimedia applications  Understanding and investigating on various transmission technologies used to achieve better QoS  Understanding and analyzing of the parameters that indicates the quality of service like packet loss, jitter, average delay, throughput etc.  Identify the service flows designed for multimedia applications to achieve better QoS

My Area of Focus and Research: Typical broadband wireless technologies implementation mainly rely on Point-to-Multipoint (PMP) based architecture [1]. Therefore my area of research will be based on the PMP architecture only. This research mainly focuses on the analysis of QoS for multimedia inWiMax networks. I will focus on the detail implementation of QoS for multimedia in the WiMax networks. As stated above the QoS parameters will be discussed briefly in this project. I will try to distinguish between different service flows with respect to the QoS parameters. And further more if I get opportunity I will focus on some scheduling algorithm for QoS that are been implemented in the MAC layer of WiMax network.

References: [1] Francesco De Pellegrini, Daniele Miorandi, Elio Salvadori and Nicola Scalabrino. “QoS Support in WiMax Networks: Issues and Experimental measurement”, Technical Report N.200600009, CREATE-NET, June 16, 2006. [2] J. G. Andrews, A. Ghosh, R. Muhamed. “Fundamentals of WiMax: Understanding Broadband wireless Networking”, Prentice Hall, Feb-2007 [3] Rohit A Talwalkar, Mohammad Ilyas. “Analysis of Quality of service (QoS) in WiMax networks” 16th IEEE International Conference, 2008, ICON 2008, 12-14 December, Page(s) 1-8, digital Object identifier 10.1109/ICON.2008.4772615 [4] Claudio Cicconetti, Luciano Lenzini, Enzo Mingozzi. “Quality of service support in IEEE 802.16 Networks”, University of Pisa Carl Eklund, Nokia Research Center,March/April 2006, Page(s) 50-55 [5] A. Safak, B. Preveze. “Analysis of Delay factors for Voice over WiMax”, Computer and Information Sciences, 2008.ISCIS’08. 23rd International Symposium; 27-29 October 2008. Page(s):1-6, Digital object identifier 10.1109/ISCIS.2008.4717927 Md R I Bhuiyan ID 08033885

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Proposal for Research & Development

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[6] Kevin Chaplin, B.Sc (Eng.), “Wireless Network Technologies”, White Paper, Application Note: 2130209, Sierra Wireless, Inc. 8th July 2002, [7] V. Sharma, A. A Kumar, S.R Sandeep, M.S Sankaran: “Providing QoS to Real and Data Applications in WiMax Mesh Networks”, Wireless Communication and Networking Conference, 2008. WCNC 2008, IEEE, March 31 2008- April 3 2008, Page(s):2645-2650, Digital Object Identifier 10.1109/WCNC.2008.464 [8] “WiMax- Copper in the Air”, White Paper, April 2006, With WiMax the foundation for standardized interoperable BWA (Broadband wireless access), www.caltelassn.com/Reports06/Broadband/ericsson_wimax.pdf [9] J. Freitag, N. L. S. da Fonseca: “Uplink Scheduling with Quality of service in IEEE 802.16 Networks”, Global Telecommunications Conference, 2007. GLOBCOM’07. Page(s):2503-2508, Digital Object Identifier 10.1109/GLOCOM.2007.476 [10] Pratik Dhrona, Najah Abu Ali, Hossam Hassanein: “ A Performance Study of Scheduling algorithms in Point-to-Multipoint wiMax Networks”, 33rd IEEE Conference.14-17 Oct. 2008 Page(s):843-850. Digital Object Identifier 10.1109/LCN.2008.4664291 [11] C. Cicconetti, A. Erta, L. Lenzini, E. Mingozzi, “Performance Evaluation of the IEEE 802.16 MAC for QoS Support”, IEEE Transactions on Mobile Computing, Vol. 6, jan 2007 Page(s): 26-38, Digital Object Identifier 10.1109/TMC.2007.250669 [12] Guosong Chu, Deng Wang, Mei Shunliang : “ A QoS architecture for the MAC protocol of IEEE 802.16 BWA system”, IEEE 2002 International Conference on Communication,Circuits and Systems and West Sino Expositions, 29 June- 1 July 2—2, Page(s):435-439, Vol. 1. [13] H. Fattah, C. Leung, “An overview of scheduling algorithms in wireless multimedia networks,” IEEE Wireless Communications, OCT 2002, Page(s) 76-83, Vol. 2, no. 5

Md R I Bhuiyan ID 08033885

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