Journal of South China University of Technology(Natural Science) >

2015 , Vol. 43 >Issue 5: 17 - 21,29

DOI: https://doi.org/10.3969/j.issn.1000-565X.2015.05.003

Electronics, Communication & Automation Technology

A New Random Spectrum Access Scheme Based on Cross-Layer Modeling

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  • School of Electronic and Information Engineering，South China University of Technology，Guangzhou 510640，Guangdong，China
张敏(1983-)，女，博士后，讲师，主要从事认知无线电网络、无线资源分配算法研究．

Received date: 2014-12-08

  Revised date: 2015-01-16

  Online published: 2015-05-07

Supported by

Supported by the National Natural Science Foundation of China(61301300)

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Abstract

In view of different operation mechanisms of call level and packet level，a cross-layer Markov model is established to describe the relationship between call level and packet level，the formulas of call blocking probability and packet delay for secondary users are derived，and a new random spectrum access (RSA) scheme on the basis of cross-layer model is proposed． Furthermore，a system level simulation is conducted for cognitive radio networks．Simulated results show that the proposed model helps evaluate the performance of cognitive radio networks accurate-ly，and that the random spectrum access scheme can guarantee the performance of both the call level and the packet level for secondary users．

Key words： cognitive radio; random spectrum access; cross-layer modelling

Cite this article

Zhang Min Li Bin . A New Random Spectrum Access Scheme Based on Cross-Layer Modeling[J]. Journal of South China University of Technology(Natural Science), 2015 , 43(5) : 17 -21,29 . DOI: 10.3969/j.issn.1000-565X.2015.05.003

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