[1] Zuo Xuzhou, Liu Jishun, Xia Weiwei, Shen Lianfeng, et al. Hybrid spectrum access model for cognitive femtocell networks [J]. Journal of Southeast University (English Edition), 2013, 29 (2): 118-124. [doi:10.3969/j.issn.1003-7985.2013.02.002]

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

29

Issue:

2013 2

Page:

118-124

Research Field:

Information and Communication Engineering

Publishing date:

2013-06-20

Info

Title:

Hybrid spectrum access model for cognitive femtocell networks

Author(s):

Zuo Xuzhou;  Liu Jishun;  Xia Weiwei;  Shen Lianfeng

National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China

Keywords:

cognitive radio;  frequency spectrum sensing;  frequency spectrum accessing;  femtocell;  macrocell

PACS:

TN92

DOI:

10.3969/j.issn.1003-7985.2013.02.002

Abstract:

In order to mitigate the interference for macrocell users caused by deploying femtocells(home base-station)in a long term evolution(LTE)system, a hybrid spectrum access model is proposed by means of applying the cognitive radio technology to the femtocell. The femtocell periodically senses the radio environment and opportunistically accesses the usable frequency band so that the frequency spectrum resource is used intelligently. The sensing process is performed in two stages, which are principal sensing in the downlink and assisted sensing in the uplink, respectively. Based on the information obtained from the sensing results, the frequency spectrum can be used flexibly in underlay or overlay modes in the femtocell. Simulation results show that by using the proposed model, the throughput of a femtocell is greatly improved with tolerable interference to macrocell users.

References:

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[10] Lien S Y, Tseng C C, Chen K C, et al. Cognitive radio resource management for QoS guarantees in autonomous femtocell networks [C]//IEEE International Conference on Communications. Cape Town, South Africa, 2010:5502784-1-5502784-6.
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Memo

Memo:

Biographies: Zuo Xuzhou(1983—), male, graduate; Shen Lianfeng(corresponding author), male, professor, lfshen@seu.edu.cn.
Foundation items: The National Science and Technology Major Project(No.2012ZX03004005-003), the National Natural Science Foundation of China(No.61171081, 61201175), the Innovation Technology Fund of Jiangsu Province(No.BC2012006).
Citation: Zuo Xuzhou, Liu Jishun, Xia Weiwei, et al. Hybrid spectrum access model for cognitive femtocell networks[J].Journal of Southeast University(English Edition), 2013, 29(2):118-124.[doi:10.3969/j.issn.1003-7985.2013.02.002]

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