Fig. 5From: Multichannel analysis of soft frequency reuse and user association in two-tier heterogeneous cellular networks a The conditional probabilities \({{\mathcal {A}}_{k}}{p_{c,k}}\left ({{T_{\text {FR},k}}} \right)\) and \({{\mathcal {A}}_{k}}\left ({1 - {p_{c,k}}\left ({{T_{\text {FR},k}}} \right)} \right)\) that a user in the kth tier is an interior user and edge user, respectively. b The cell loads with SFR for T FR,1=T FR,2=3 dBBack to article page