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Heterogeneous network (HetNet) is a promising deployment in fifth generation (5G). HetNet consists of Macro BS and underlaid BSs with lower transmission power and smaller coverage. Cell range expansion (CRE) has been widely applied to offload users to pico, which can obtain larger cell splitting gain, achieve more system throughput. However, CRE will introduce severe inter-cell interference. A cross-tier...
In this work, we consider a heterogeneous network consisting of several macro BSs (base stations) and pico BSs. In cellular networks, current trend indicates the deployment density of pico BSs becoming larger, and Inter-site Distance becoming smaller than before. The cooperation among the macro and pico BSs should cause the attention of the researchers under this new circumstance. We propose a hierarchical...
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