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Article

Research of the Effect of Services on the Aggregate Bandwidth of a Cell Radio Access Network UTRAN of UMTS Standard

1Department of Automatic and Telecommunications, Donetsk National Technical University, Donetsk, Ukraine


American Journal of Electrical and Electronic Engineering. 2013, 1(1), 15-18
DOI: 10.12691/ajeee-1-1-3
Copyright © 2013 Science and Education Publishing

Cite this paper:
Voropayeva Viktoriya. Research of the Effect of Services on the Aggregate Bandwidth of a Cell Radio Access Network UTRAN of UMTS Standard. American Journal of Electrical and Electronic Engineering. 2013; 1(1):15-18. doi: 10.12691/ajeee-1-1-3.

Correspondence to: Voropayeva Viktoriya, Department of Automatic and Telecommunications, Donetsk National Technical University, Donetsk, Ukraine. Email: Corresponding author: Voropayeva@donntu.edu.ua

Abstract

UMTS Terrestrial Radio Access Network (UTRAN) dimensioning has been of great interest among network researchers and planners due to the limit of cell bandwidth. This paper investigates the impact of service changes on the nature of radio interface UMTS bandwidth. Finally, OPNET simulation models are developed. The main purpose of modeling was to obtain the dependency of common capacities of the base station for the upward and downward directions on time. Different types of customers were used as the criterion for comparison the values obtained.

Keywords

References

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[[5]  Moulsley, T.J.; "Throughput of high speed downlink packet access for UMTS," 3G Mobile Communication Technologies, 2001. Second International Conference on (Conf. Publ. No. 477), 363-367, 2001.
 
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[6]  Voropayeva, V.Y.; Krasikova, A.S. "Evaluating the influence of mobile user movement speed upon the throughput of a UMTS network cell," in Microwave and Telecommunication Technology (CriMiCo), 2012 22nd International Crimean Conference, 269-270, 2012.
 
[7]  X.Li, W. Cheng, A.Timm-Giel, and C. Gorg, "Modeling IP-based UTRAN for UMTS in OPNET", distinguished paper award, in Proc. OPNETWORK 2007, September, 2007, Washington DC, USA, 2007.
 
[8]  X. Li, S. Li, C. Gorg and A. Timm-Giel, "Traffic Modeling and Characterization for UTRAN," in Proc. 4th International Conference on Wired/Wireless Internet Communications, Bern Switzerland, 2006.
 
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Article

Price Based Unit Commitment Considering Fuzzy Uncertainty

1Department of Electrical Engineering, Safashahr Branch, Islamic Azad University, Safashahr, Iran


American Journal of Electrical and Electronic Engineering. 2013, 1(1), 10-14
DOI: 10.12691/ajeee-1-1-2
Copyright © 2013 Science and Education Publishing

Cite this paper:
Reza Khorramnia, Soroush Karimi Khorrami. Price Based Unit Commitment Considering Fuzzy Uncertainty. American Journal of Electrical and Electronic Engineering. 2013; 1(1):10-14. doi: 10.12691/ajeee-1-1-2.

Correspondence to: Reza Khorramnia, Department of Electrical Engineering, Safashahr Branch, Islamic Azad University, Safashahr, Iran. Email: r.khorramnia@gmail.com

Abstract

In deregulated systems, bidding plays an important role for Gencos participating with the objective of maximizing profit. While making bidding strategies, factors like unit constraint and price uncertainty need to be considered as they have direct impact on the expected profit. The goal of the partnership units of solution is based on the price. By solving this problem, the generation company to determine the optimal generation schedule and unit status hourly. MCP plays an important role in the profitability of the units. In this paper, a novel approach to solving an optimal bid curve underprice uncertainty using PBUC in PAB markets is presented. Numerical results show the suitability of the method on a sample market.

Keywords

References

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Article

A Cross-Layer Qos Based Scheduling Algorithm WRR Design in Wimax Base Stations

1Laboratory of Electronic and Micro-electronic, Monastir University, Monastir, Tunisia

2Faculty of Science and Arts Addayer, Jazan University, Jazan, KSA

3Unité de Recherche Médiatron de SupCom, Carthage University, Tunisia


American Journal of Electrical and Electronic Engineering. 2013, 1(1), 1-9
DOI: 10.12691/ajeee-1-1-1
Copyright © 2013 Science and Education Publishing

Cite this paper:
Hattab Guesmi, Sassi Maaloul. A Cross-Layer Qos Based Scheduling Algorithm WRR Design in Wimax Base Stations. American Journal of Electrical and Electronic Engineering. 2013; 1(1):1-9. doi: 10.12691/ajeee-1-1-1.

Correspondence to: Hattab Guesmi, Laboratory of Electronic and Micro-electronic, Monastir University, Monastir, Tunisia. Email: Hattab.guesmi@fsm.rnu.tn

Abstract

The IEEE 802.16 standard defines a wireless broadband access network technology called Wimax. It introduces several advantages, one of which is the support for Quality of Service (QoS) at the MAC level. To ensure meeting the QoS requirements, the 802.16 base stations must run some algorithms to allocate slots between connections. Call admission and scheduling are the strongest tools in our hand to ensure QoS. We propose an efficient design architecture that is capable of allocating slots based on the QoS requirements, bandwidth request sizes, and the 802.16 network parameters. To test the proposed solution, we have implemented a cross layer between the 802.16 MAC and the network layers in the NS-2 simulator and, then in RTL level with VHDL to be designed in FPGA. Several simulation scenarios are presented. According to the simulation results, the proposed scheduling solution ensures the QoS requirements of all 802.16 service classes. The solution shares free resources weighted fairly and demonstrates work-conserving behavior. The proposed design in this paper was analyzed: simulation results show a significant performance improvement in terms of overall throughput and delay when compared to recently published work.

Keywords

References

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