On/Off Macrocells and Load Balancing in Heterogeneous Cellular Networks

Provided by: University of Texas at Arlington
Topic: Mobility
Format: PDF
The rate distribution in Heterogeneous Networks (HetNets) greatly benefits from load balancing, by which mobile users are pushed onto lightly-loaded small cells despite the resulting loss in SINR. This offloading can be made more aggressive and robust if the macrocells leave a fraction of time/frequency resource blank, which reduces the interference to the offloaded users. The authors investigate the joint optimization of this technique - referred to in 3GPP as enhanced Inter-Cell Interference Coordination (eICIC) via Almost Blank Sub-frames (ABSs) - with offloading in this paper.

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