minimizing the interference for any of the other networks on 5 GHz band. Since LTE radio resource management is a dynamic pro- cess, it allows avoiding static worst-case interference situation by continuously monitoring the environment. LTE radio resource management should have as the first priority avoid- ing the use of channels overlapping with a closeby Wi-Fi or another LTE network on unlicensed band. LTE itself can tolerate more interference on the co-channel case; thus, as seen from Figure 10.9, two LTE networks from different operators on the same channel cause clearly smaller capacity loss compared to the case when another network is a Wi-Fi network as both LTE networks have advanced features for handling co-channel interference. In the studied example case, both the LTE networks can reach even higher capacity than single Wi-Fi net- work. The use of LTE technology with advanced features such as physical layer re-transmission and link adaptation allows more tolerance for different interference conditions. An example measurement from the 5 GHz band is presented in Figure 10.11, which shows clearly that there are several places in the example European shopping mall where LAA transmission could operate and reach the maximum capacity even with multiple carriers. The selection of such a carrier without detected Wi-Fi or other LAA network activity allows to maximize the performance. The eNodeB (or UE) needs only to have the necessary idle LTE Unlicensed space for space for ~5250-5350 ~5570-5725 = 100 MHz >150 MHz Figure 10.11 Example measurement for lower part of 5 GHz band periods as required by the regulation but otherwise the channel may be occupied constantly due to lack of any other traffic. Similarly when looking at the full 5 GHz band, as shown in Figure 10.12, there are several channels free. Please note that the band above 5.725 GHz is not available in Europe at the moment and was thus not considered in the example measurement. The upper part of the band is more attractive as transmit power of 1 W is all