terference indicators (HIIs) that provide bit maps of interference conditions on a per radio bearer (RB) basis. Downlink ICIC is supported through the use of downlink relative narrowband transmit power (RNTP) bit maps providing a coarse power indication on a per RB basis. The LTE standard provides tools for dynamic inter-cell-interference coordination of the scheduling in neighbor cells such that cell-edge users in different cells preferably are scheduled on complementary parts of the spectrum when required. Note that a major difference from static reuse schemes is that LTE still allows for the total available spectrum to be used in all cells. Bandwidth restrictions are applied only when motivated by traffic and radio conditions [25]. 3GPP Evolved Packet System (EPS) Bandwidth flexibility 1.4 MHz 20 MHz Duplex flexibility Half-duplex FDD fDL/UL Paired spectrum Reduced UE complexity Unpaired spectrum Figure 3.31 LTE spectrum flexibility. Reproduced with permission from Dahlman et al. 2009 IEEE [24] Uplink power control is one of the mechanisms in LTE used for inter-cell interference coordination. It is used to control not only the received signal strength in the intended cell, but also to control the amount of interference in neighboring cells. LTE uplink power control supports fractional path-loss compensation, implying that users close to the cell border use relatively less transmit power, and thus generate relatively less interference to neighbor cells [25]. 3.9.5 Spectrum Flexibility LTE can operate not only in different frequency bands, but it also can be deployed with different bandwidths in order to operate in a spectrum of different sizes, as well as to enable efficient migration of other radio-access technologies to LTE. LTE allows for an overall system bandwidth ranging from as small as 1.4 MHz up to 20 MHz, where the later is required to provide the highest LTE data rates. Unlike previous cellular systems, LTE provides the possibility for different uplink and downlink bandwidths, enabling asymmetric spe