Downlink Femtocell Networks: Open or Closed?

Author

Jo, Han-Shin ; Xia, Ping ; Andrews, Jeffrey G.

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Texas at Austin, Austin, TX, USA

fYear

2011

fDate

5-9 June 2011

Firstpage

1

Lastpage

5

Abstract

A fundamental choice in femtocell deployments is the set of users which are allowed to access each femtocell. Closed access restricts the set to specifically registered users, while open access allows any mobile subscriber to use any femtocell. The main results of the paper are lemmas which provide expressions for the SINR distribution for various zones within a cell as a function of this MBS-femto distance. The average sum throughput (or any other SINR-based metric) of home and cellular users under open and closed access can be readily determined from these expressions. We show that unlike in the uplink, the interests of home and cellular users are in conflict, with home users preferring closed access and cellular users preferring open access. The conflict is most pronounced for femtocells near the cell edge, when there are many cellular users and fewer femtocells.

Keywords

femtocellular radio; mobile radio; radio access networks; MBS-femto distance; cellular user; closed access; downlink femtocell network; femtocell deployment; home user; open access; signal-to-interference-and-noise ratio; Analytical models; Downlink; Femtocell networks; Interference; Macrocell networks; Signal to noise ratio; Throughput;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications (ICC), 2011 IEEE International Conference on

Conference_Location

Kyoto

ISSN

1550-3607

Print_ISBN

978-1-61284-232-5

Electronic_ISBN

1550-3607

Type

conf

DOI

10.1109/icc.2011.5962618

Filename

5962618