Improving cellular coverage through UAVs

Cellular covering of big events can be sometimes difficult, due to the fact that places of happening in network planning are not assumed to be so crowded. Also, in present social networks one of the key characteristics is tremendous increasing of uplink live streams. In these situations it is often critical to provide appropriate quality of service. A solution for meeting these requirements is implementation of unmanned aerial vehicles (UAVs) that can act as relays between base station (BS) and mobile units (MUs). Here, we considered several practical scenarios for UAVs implementation, and proposed one new solution for distributed realization of space diversity, i.e. multiple input multiple output (MIMO) channel between MUs and BS.