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7 - Femtocell coverage optimization

Published online by Cambridge University Press:  05 May 2013

Holger Claussen
Affiliation:
Bell Labs Ireland, Alcatel-Lucent
Lester Ho
Affiliation:
Bell Labs Ireland, Alcatel-Lucent
Sam Samuel
Affiliation:
Bell Labs Ireland, Alcatel-Lucent
Florian Pivit
Affiliation:
Bell Labs Ireland, Alcatel-Lucent
Tony Q. S. Quek
Affiliation:
Singapore University of Technology and Design
Guillaume de la Roche
Affiliation:
Mindspeed Technologies
İsmail Güvenç
Affiliation:
Florida International University
Marios Kountouris
Affiliation:
SUPÉLEC (Ecole Supérieure d'Electricité)
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Summary

Introduction

The idea of having a cellular system deployed without planning is quite a challenging one. To have the resulting system work without any human involvement (except for the physical placement of cells) is even more challenging. The motivations for technology to head in this direction are numerous. Among these are the ever-present need to reduce the costs of operating a cellular network, and the need for the cellular network to keep pace with the increasing data demands placed upon it. The concept of a cellular network being able to deploy itself is not new and has been examined philosophically in [1]. The idea of femtocells, or more generally small cells, as a means to fill coverage gaps and to increase capacity is even older. Its roots can be traced back to [2]. There are, however, very good reasons why such deployments have not been successful in the past. The first is that as the size of the cells reduces, in order to increase the spatial frequency reuse, the deployment costs increase (due to the sheer number of additional cells). The second is that, once the cells are deployed, planning such a network manually can be complex and burdensome. If not carefully thought through, any insertion of a new cell into the topology can have detrimental rather than beneficial effects. These simple facts may often ruin the business case for the deployment of additional cells.

Type
Chapter
Information
Small Cell Networks
Deployment, PHY Techniques, and Resource Management
, pp. 161 - 187
Publisher: Cambridge University Press
Print publication year: 2013

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References

[1] H., Claussen, L. T. W., Ho, H. R., Karimi, F. J., Mullany, and L. G., Samuel, “I, base station: cognisant robots and future wireless access networks,” in Proc. IEEE Consum. Commun. and Networking Conf. (CCNC), Las Vegas, NV, Jan. 2006, pp. 595–9.Google Scholar
[2] A. C., Stocker, “Small-cell mobile phone systems,” IEEE Trans. Veh. Technol., vol. 33, no. 4, pp. 269–75, Nov. 1984.Google Scholar
[3] L. T. W., Ho and H., Claussen, “Effects of user-deployed, co-channel femtocells on the call drop probability in a residential scenario,” in Proc. IEEE Int. Symp. Personal, Indoor, Mobile Radio Commun. (PIMRC), Athens, Greece, Sep. 2007, pp. 1–5.Google Scholar
[4] H., Claussen, L. T. W., Ho, and L. G., Samuel, “Self-optimization of coverage for femtocell deployments,” in Proc. Wireless Telecommun. Symp. (WTS), Los Angeles, USA, Apr. 2008, pp. 278–85.Google Scholar
[5] H., Claussen and F., Pivit, “Femtocell coverage optimization using switched multi-element antennas,” in Proc. IEEE Int. Conf. on Commun. (ICC), Dresden, Germany, June 2009, pp. 1–6.Google Scholar
[6] H., Claussen, L. T. W., Ho, and F., Pivit, “Self-optimization of femtocell coverage to minimize the increase in core network mobility signalling,” Bell Labs Technical J., vol. 14, no. 2, pp. 155–84, Aug. 2009.Google Scholar
[7] 3GPP, “3GPP system architecture evolution: report on technical options and conclusions,” 3rd Generation Partnership Project (3GPP), TR 23.882, July 2007.
[8] H., Claussen, “Performance of macro- and co-channel femtocells in a hierarchical cell structure,” in Proc. IEEE Int. Symp. Personal, Indoor, Mobile Radio Commun. (PIMRC), Athens, Greece, Sep. 2007, pp. 1–5.Google Scholar
[9] S. J., Fortune, D. M., Gay, B. W., Kernighan, O., Landron, R. A., Valenzuela, and M. H., Wright, “WISE design of indoor wireless systems: practical computation and optimization,” IEEE Comput. Sci. Eng., vol. 2, no. 1, pp. 58–68, Spring 1995.Google Scholar
[10] H., Claussen, “Efficient modelling of channel maps with correlated shadow fading in mobile radio systems,” in Proc. IEEE Int. Symp. Personal, Indoor, Mobile Radio Commun. (PIMRC), Berlin, Germany, Sep. 2005, pp. 512–16.

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