re are existing solutions (e.g. femto cell or Wi-Fi) for that case. Another typical use case would be corporate environment that would benefit from Public indoor cells Home cells to rely on Wi-Fi (or femto) Outdoor hot spot Coordinated with macro/micro cells Figure 10.2 LTE-unlicensed environment LTE Small Cell Optimization the use of high-capacity LTE radio technology. In the home environment, the use of Wi-Fi is foreseen to offer sufficient capacity and thus unlicensed band LTE operation is not targeted by mobile network operators for such an environment. 10.4 Motivation for the Use of Unlicensed Spectrum with LTE The use of LTE with unlicensed spectrum is driven by the increase in the traffic volumes and the number of mobile broadband users globally. As mentioned previously, the 5 GHz spectrum offers a lot of available channels/bandwidth. With the LTE technology the following could be achieved: Better spectrum efficiency than the current technologies in use with the 5 GHz band. Since LTE radio technology is based on the state-of-the-art technology, it can achieve both high data rates and at the same time high spectral efficiency when operating in the unlicensed band. Besides the capacity, the coverage of LTE technology is also superior, especially when combined with the use of licensed band operation. From the network management point of view using the unlicensed band with LTE, instead of with an alternative radio technology, provides an integrated solution to the existing operator radio network setup, avoiding multiple solutions for network management, security or authentication. Having only a single technology simplifies the overall network maintenance. Finally, the use of LAA is fully transparent to the LTE core network, avoiding the need to upgrade any of the evolved packet core (EPC) elements. The combined use of licensed and unlicensed spectrum provides the end user opportunistic possibilities to enjoy higher data rates and overall better performance when the unlicensed band operation is available. On th