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8Release 9 573 EXPERI ENCEANDEXCHANGE2011 4Technical challenges and
current research situation of femtocellYE Xuan, ZHANG Xin, CAO Gen,
YANG Da-cheng (Beijing University of Posts and Telecommunications,
Beijing 100876, China)Abstract As a new technique which aims at
improving indoor signal coverage, femtocell have received
widespread attention in the industry. In this paper, we frst
introduced the concept of femtocell and then analyze the benefts of
bringing femtocell into the existing microcell network. After that,
we described and analyzed
thetechnicalchallengesfacingfemtocell,aswellastheresearchdirectionsoffemtocell.Finally,we
described the current standardization and commercialization
situation.Keywordsfemtocell; indoor coverage; technical
challenge[1] Presentations by ABI Research, Picochip, Airvana, IP
Access, Gartner, Telefonica Espana[A]. 2nd Intl. Conf Home Access
Points and Femtocells[C].
http://www.avrenevents.com/dallasfemto2007/
purchase_presentations.htm[2] Femto Forum. Regulatory Aspects of
Femtocells[S]. May,2008.[3] Chandrasekhar V, Andrews J G, Gatherer
A. Femtocell networks: a survey[J]. IEEE Communications Magazine,
September 2008: 59-67.[4] 3GPP TR 25.967 v9.0.0. Home Node B Radio
Frequency (RF) Requirements (FDD)[S]. 2009.5.[5] 3GPP TS 36.300
v9.6.0. E-UTRA and E-UTRAN: Overal l Description[S]. 2010,12.[6]
3GPP TS 24.285 v9.4.0. Allowed CSG List Management Object:
Management Objest[S]. 2010,12.[7] Golaup A, Mustapha M,
Patanapongpibul L B. Femtocell Access Control Strategy in UMTS and
LTE[J]. IEEE Communications Magazine, September 2009, 117-123.[8]
Knisely D N, Yoshizawa T, Favichia F. Standardization of Femtocells
in 3GPP[J]. IEEE Communications Magazine, September 2009: 68-75.[9]
3GPP TS 25.467(9.4.0). UTRAN Architecture for 3G Home Node B[S].
December 2010.[10] Ho L T W, Claussen H. Effects of user-deployed,
co-channel femtocellson the call drop probability in a residential
Scenario[A]. 18th Annual IEEEIntl Symp. Personal, Indoor and Mobile
Commun[C], September 2007:1-5.[11] Yeung K L, Nanda S. Channel
management in microcell/macrocell cellularradio systems[J]. IEEE
Trans Vehic Tech, November 2006: 60112.[12] Picochip. The case for
home base stations[A]. White Paper[C]. April2007.[13] Andrews J G,
Ghosh A, Muhamed R. Fundamentals of WiMAX[M].Prentice Hall,
2007.3GPP 3G 3GPP 3G
20055201020112KDV8000AMCU1KDV7920141KDV7820)News
