Evaluation of wimax admission control algorithms in mobile voip scenarios with batch arrivals and nbldpc fec

• Autorzy: Flizikowski A. , Przybyszewski M. , Hołubowicz W.
• Języki publikacji: EN

Abstrakty

EN

This paper presents results of assessing quality of VoIP conversations in WiMAX networks using the nbLDPC (non-binary Low- Density Parity-Check) FEC in mobility scenarios that are based on the real world terrain charactristics around simulated BS. System under test (SUT) is instrumented with three Call Admission Control (CAC) mechanisms (namely EMAC, ARAC and nsc-ARAC). These algorithms are evaluated against controlling the VBR traffic that comes with burst arrivals. The first algorithm relies on calculating simple exponential weighted moving average (EWMA) of the overall resource consumption whereas the other two ARAC algorithms perform calculations discerning between the new, the ongoing and the finishing connections thus providing more accurate resource estimations (but the ARAC tracks the history of requests as well). In order to evaluate their performance authors rely on a cell-level based simulation environment that relies on the cooperative use of well known simulators - ns2 and Matlab. Previous work in the field is enhanced by improving the fidelity of proposed IEEE 802.16 simulator. Authors demonstrate the influence of increasing number of arrivals per one batch as well as testing the "zero hour" scenario (system saturation). In order to include nbLDPC codes in SUT’s mobile channels, a method called Link-To-System interface (L2S) has been implemented.

Słowa kluczowe

EN

FEC; WIMAX networks; call admission control

• Wydawca: Instytut Telekomunikacji i Informatyki Uniwersytetu Technologiczno-Przyrodniczego w Bydgoszczy
• Czasopismo: Image Processing & Communications
• Rocznik: 2013
• Tom: Vol. 18, no. 1
• Strony: 45--56
• Opis fizyczny: Bibliogr. 19 poz., rys.

Twórcy

autor

Flizikowski A.

• University of Technology and Life Sciences, Bydgoszcz

autor

Przybyszewski M.

• ITTI Sp.zo.o., Poznan

autor

Hołubowicz W.

• University of Technology and Life Sciences, Bydgoszcz / Adam Mickiewicz University, Poznan, Poland

Bibliografia

• [1] Adam Flizikowski, Witold Holubowicz, Marcin Przybyszewski, Slawomir Grzegorzewski, ”Admission control and system capacity assessment of WiMAX with ACM and nb-LDPC codes - simulation study with ViMACCS ns2 patch,” The International Conference on Advanced Information Networking and Applications, Perth, Australia
• [2] "IEEE 802.16m Evaluation Methodology Document (EMD) 2008
• [3] Adam Flizikowski, Marcin Przybyszewski, Ma teusz Majewski, Rafal Kozik, ""Evaluation of guard channel admission control schemes for IEEE 802.16 with integrated nb-LDPC codes"," International Conference on Ultra Modern Telecommunications, ICUMT St.-Petersburg Russia 2009
• [4] A. Flizikowski. R. Kozik, H. Gierszal, M. Przybyszewski, W. Holubowicz, "WiMAX system level simulation platform based on ns2 and DSP integration", Broadbandcom2009, Wroclaw, Poland
• [5] WiMAX System Evaluation Methodology, 2008
• [6] IEEE 802.16-2009: Part 16: Air Interface for Broadband, Wireless Access Systems, 2009
• [7] INFSCO-ICT-216203 DA VINCI D5.4.1 v1.0: Evaluation criteria for multimedia services, issue 1
• [8] INFSO-ICT-216203 DAVINCI D2.3.1 v1.0: System level evaluation, Issue 1
• [9] North Carolina State Univeristy, Human Mobility Model and DTN Group http://netsrv.csc.ncsu.edu/twiki/bin/view/Main/MobilityModels
• [10] J. Zhang, H. Zheng, Z. Tan, Y. Chen, "Principle of Link Evaluation", Communications and Network, 2009 06-19 p.6-19
• [11] A. Kliks, A. Zalonis, I. Dagres, A. Polydoros, H. Bogucka, "PHY Abstraction Methods for OFDM and NOFDM Systems", Journal of telecommunications and information technology
• [12] ITU-T Recommendation G.107, The E-model, a computational model for use in transmission planning
• [13] R.G. Cole, J.H. Rosenbluth, Voice over IP performance monitoring, Computer Communications Review, 2001
• [14] J.Q. Walker, Assessing VoIP call quality using the E-model, netI
• [15] FutureNetworkMobile Summit - accepted for presentation (published)
• [16] J. Lakkakorpi, A.Sayenko -Based Connection Admission Control Methods for Real-Time Services in IEEE 802.16e 2009 Second International Conference on Communication Theory, Reliability, and Quality of Service
• [17] http://www.euqos.eu/
• [18] INFSO-ICT-216203 DAVINCI D2.2.1 v1.0: Link level evaluation, Issue 1
• [19] Marcin Przybyszewski, Adam Flizikowski, Witold Holubowicz Evaluation of Measurement Based Admission Control algorithms for IEEE 802.16 networks in simulations with L2S physical layer abstraction and nbLDPC codes Image Processing & Communications Challenges 2, 2010