LTE Femtocells Factors such as security, interference or re- mote management from the operator need to be considered. As far as the operative frequency bands are concerned, taking into account the above men- tioned possibilities, the present chapter will limit the focus on the implementation of LTE, and the corresponding femtocells, in the "Spectrum Digital Dividend" frequency band (790-862 MHz). In any case, the benefits of adopting femtocells are numerous for both operators and clients; it is known that femtocells help in two ways: · Firstly, removing indoor data sessions from the macro network, the femtocell re- duces the number of users each macro cell is able to support. Secondly, because of the way mobile net- work operates, if indoor users are served via femtocells instead of through the mac- ro cell, the capacity of the macro network increases out of all proportion to the num- ber of users who have been removed from the cell. · FEMTOCELL DEPLOYMENT Strategic positioning of femtocellular systems inside buildings, combined with their ability to deliver high-quality voice and data, and to bridge mobile terminals with the rest of the home or office network, makes them very interesting components for operators to build compelling business cases for both landline system replacement and fixed/ Even ignoring the revenue earning opportu- nity, the cost savings from off-loading the macro network alone provide a strong business case for operators to deploy femtocells. A totally new set