Femto and Pico eNBs are some of the commonly adopted HetNets. Their deployment in the traditional macro base stations is meant to increase capacity to proffer solution to increasing demands for data but these solutions in turn pose greater a problem of interference. If they are important to be adopted why is this so?
Examples of heterogeneous elements include microcells, picocells, femtocells, and distributed antenna systems (remote radio heads), which are distinguished by their transmit powers/ coverage areas, physical size, backhaul, and propagation characteristics. This shift presents many opportunities for capacity improvement,
and many new challenges to co-existence and network management.
source: Heterogeneous Cellular Networks: From Theory to Practice in LTE-ADVANCED AND 4G WIRELESS COMMUNICATIONS: PART 2
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