DocumentCode :
1917569
Title :
Self-optimization of coverage for femtocell deployments
Author :
Claussen, Holger ; Ho, Lester T W ; Samuel, Louis G.
Author_Institution :
Bell Labs., Alcatel-Lucent, Swindon
fYear :
2008
fDate :
24-26 April 2008
Firstpage :
278
Lastpage :
285
Abstract :
In femtocell deployments, leakage of the pilot signal to the outside of a house can result in a highly increased signalling load to the core network as a result of the higher number of mobility events caused by passing users. This effect can be minimized by reducing the pilot power. However this approach could lead to insufficient indoor coverage, which also causes an increase in mobility events. In this paper, coverage adaptation is proposed for femtocell deployments that uses information on mobility events of passing and indoor users to optimize the femtocell coverage in order to minimize the increase in core network mobility signalling. Different coverage adaptation methods are discussed and it is shown that the proposed mobility event based self-optimization can significantly outperform simpler methods that aim to achieve a constant cell radius.
Keywords :
cellular radio; mobility management (mobile radio); optimisation; core network; femtocell deployments; mobility events; mobility signalling; pilot signal leakage; self-optimization; Base stations; Cellular networks; Communication industry; DSL; Economic forecasting; IP networks; Paging strategies; Wireless networks;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Wireless Telecommunications Symposium, 2008. WTS 2008
Conference_Location :
Pomona, CA
ISSN :
1934-5070
Print_ISBN :
978-1-4244-1869-5
Electronic_ISBN :
1934-5070
Type :
conf
DOI :
10.1109/WTS.2008.4547576
Filename :
4547576
Link To Document :
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