Title: Performance evaluation of TCP Vegas in WiMAX network asymmetry

Authors: Kailash Chandra Bandhu; Rajeev G. Vishwakarma

Addresses: Department of Computer Science and Engineering, Institute of Engineering and Technology, Bhagwant University, Ajmer, Rajasthan, India ' Department of Computer Science and Engineering, Indore Institute of Science and Technology Indore, Madhya Pradesh, India

Abstract: WiMAX technology has features to support different MAC and physical layer parameters. The WiMAX network asymmetry largely depends on DL:UL ratio. The performance of TCP Vegas in WiMAX network asymmetry is evaluated by varying MAC and physical layer parameters such as channel bandwidth, cyclic prefix, modulation coding scheme, frame duration, DL:UL ratio, propagation model, full duplex mode of data transfer and other operating parameters such as downloading traffic, and these parameters really affect the performance of TCP Vegas in WiMAX network. In this paper, the performance of WiMAX network is evaluated in terms of throughput, goodput and number of packets dropped.

Keywords: WiMAX; subscriber stations; downlink; uplink; MAC; medium access control; TCP; transmission control protocol; OFDM; IEEE 802.16; throughput; goodput; packet drop; performance evaluation; network asymmetry; channel bandwidth; cyclic prefix; modulation coding scheme; frame duration; DL:UL ratio; propagation models; full duplex mode; data transfer.

DOI: 10.1504/IJWMC.2016.076165

International Journal of Wireless and Mobile Computing, 2016 Vol.10 No.2, pp.97 - 103

Received: 10 Feb 2015
Accepted: 13 Nov 2015

Published online: 27 Apr 2016 *

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