Queueing analysis for cognitive radio networks with lower-layer considerations

Author

Wang, Jian ; Huang, Aiping ; Wang, Wei ; Yin, Rui

Author_Institution

Inst. of Inf. & Commun. Eng., Zhejiang Univ., Hangzhou, China

fYear

2012

fDate

1-4 April 2012

Firstpage

1269

Lastpage

1274

Abstract

In this paper, the queue dynamics of secondary users (SUs) in a multi-SU and multi-channel cognitive radio network is analyzed to obtain the expressions of quality of service (QoS) metrics. Specially, in the analysis, we take several lower-layer mechanisms and settings into account, including automatic repeat request (ARQ), finite-size buffer, adaptive modulation and coding (AMC) and non-ignorable spectrum sensing errors. By modeling the queue dynamics as a Markov chain, we derive the analytical expressions of queue length, packet dropping rate and packet collision rate. Based on these expressions, the QoS metrics including delay, packet loss rate and throughput are calculated further. Through simulation, our queueing analysis is verified and the QoS metrics are investigated.

Keywords

Markov processes; cognitive radio; quality of service; queueing theory; radio networks; wireless channels; AMC; ARQ; Markov chain; QoS metric; SU; adaptive modulation and coding; automatic repeat request; delay; finite-size buffer; lower-layer consideration; multichannel cognitive radio network; nonignorable spectrum sensing error; packet collision rate; packet dropping rate; packet loss rate; quality of service metric; queue length analytical expression; queueing dynamic analysis; secondary user; Analytical models; Automatic repeat request; Measurement; Probability; Quality of service; Queueing analysis; Sensors; AMC; ARQ; cognitive radio network; finite-size buffer; queueing analysis; sensing errors;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications and Networking Conference (WCNC), 2012 IEEE

Conference_Location

Shanghai

ISSN

1525-3511

Print_ISBN

978-1-4673-0436-8

Type

conf

DOI

10.1109/WCNC.2012.6213973

Filename

6213973