 have to be configured for a cell. Also, the antenna calibration and maintaining the timing between the antennas will be quite challenging. In practice, beamforming is useful for places where the cell geography is such that some users are in shadow areas and the only way to provide them with sufficient coverage is by beamforming. UE Capabilities Apart from the other factors discussed previously that can impact the LTE radio network planning and optimization, UE capability can also significantly influence the process of cell planning. The cell throughput will depend on the average UE category within the area (i.e., if a site has higher distribution of category 4+ UEs, then the spectral efficiency for that cell will be higher). Tables 1-4 and 1-5 are derived from 3GPP spec 36.306 and give an idea of the supported throughput for each category of UE in DL and UL. CHAPTER 1 NETWORK PLANNING Table 1-4. UE Category vs. Downlink Throughput Support UE Category Maximum Maximum number of bits Total number Maximum number number of of a DL-SCH transport block of soft of supported layers DL-SCH transport received within a TTI channel bits for spatial block bits received multiplexing in DL within a TTI Category 1 10296 10296 250368 Category 2 51024 51024 1237248 Category 3 102048 75376 1237248 Category 4 150752 75376 1827072 Category 5 299552 149776 3667200 Category 6 301504 149776 (4 layers) 75376 (2 layers) 3654144 2 or 4 Category 7 301504 149776 (4 layers) 75376 (2 layers) 3654144 2 or 4 Category 8 2998560 299856 35982720 Table 1-5. UE Category vs. Uplink Throughput Support UE Category Maximum number of UL-SCH Maximum number of bits Support for transport block bits transmitted of an UL-SCH transport block 64QAM in UL within a TTI transmitted within a TTI Category 1 Category 2 25456 25456 Category 3 51024 51024 Category 4 51024 51024 Category 5 75376 75376 Category 6 51024 51024 Category 7 102048 51024 Category 8 1497760 149776 The UL MIMO capability of the UE will also impact the link budget calculation in the UL direction, 