NDLI: HeNB-aided virtual-handover for range expansion in LTE femtocell networks

Content Provider	IEEE Xplore Digital Library
Author	Tang, Hao Hong, Peilin Xue, Kaiping
Copyright Year	2011
Abstract	Home evolved Node-B (HeNB), also called a femtocell or a femto base station, is introduced to provide high data rate to indoor users. However, two main problems arise in femtocell networks: (1) Small coverage area of HeNB, which results in limited cell-splitting gain and ping-pong handover (HO) problems and (2) high inter-femtocell interference because HeNBs may be densely deployed in a small region. In this study, an efficient cooperation mechanism called an HeNB-aided virtual-HO (HaVHO) scheme is proposed to expand the coverage area of femtocells and to reduce inter-femtocell interference. The cooperation among neighbor HeNBs is exploited in HaVHO by enabling an HeNB to relay the data of its neighbor HeNB without an HO. The HaVHO procedure is compatible with the existing long term evolution specification, and the information exchange overhead in HaVHO is relatively low. To estimate the signal to interference plus noise ratio improvement, the area average channel state metric is proposed, and the amount of user throughput enhancement by HaVHO is derived. System-level simulation shows that HaVHO has a better performance than the other four schemes, such as lesser radio link failure, lesser ping-pong handover, lesser short-stay handover, and higher user throughput.
Starting Page	312
Ending Page	320
Page Count	9
File Size	860654
File Format	PDF
ISSN	12292370
Volume Number	15
Issue Number	3
Language	English
Publisher	Editorial Department of Journal of Communications and Networks
Publisher Date	2013-06-01
Publisher Place	South Korea
Access Restriction	Subscribed
Rights Holder	JCN
Subject Keyword	Interference Signal to noise ratio Long Term Evolution Handover Delays range expansion Femtocell interference long term evolution (LTE)
Content Type	Text
Resource Type	Article
Subject	Computer Networks and Communications Information Systems

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