Title :
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
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;
Conference_Titel :
Communications (ICC), 2011 IEEE International Conference on
Conference_Location :
Kyoto
Print_ISBN :
978-1-61284-232-5
Electronic_ISBN :
1550-3607
DOI :
10.1109/icc.2011.5962618
