k and downlink data rate supported by a UE from the supported band combinations and from the baseband capa- bilities such as modulation scheme, and the number of MIMO layers. In order to limit sig- naling overhead, the gNB can ask the UE to provide NR capabilities for a restricted set of bands. When responding, the UE can skip a subset of the requested band combinations when the corresponding UE capabilities are the same. The NR defines an approximate (peak) data rate for a given number of aggregated carriers in a band or band combination as follows [13]: (Mbps) where J is the number of aggregated component carriers in a band or band combination; Rmax = 948/1024; Valey (j) is the maximum number of supported layers given by higher layer parameter maxNumberMIMO-LayersPDSCH for the downlink and higher layer parameters maxNumberMIMO-LayersCB-PUSCH and maxNumberMIMO-LayersNonCB-PUSCH for the uplink; is the maximum supported modulation order given by higher layer parame- ter supportedModulationOrderDL for the downlink and higher layer parameter supportedModulationOrderUL for the uplink; f(i) is the scaling factor given by higher layer parameter scalingFactor which can take the values of 1, 0.8, 0.75, and 0.4; u is the numer- ology (an OFDM parameter); Ts(u) is the average OFDM symbol duration in a subframe for numerology u which is given as Ts(u) = 0.0142u for normal cyclic prefix; NBWG PRB (u) is the 254 Chapter 2 maximum resource block allocation in bandwidth BW(i) with numerology u where BW(i) is the UE supported maximum bandwidth in the given band or band combination; and (i) is the estimated overhead which takes the values 0.14 [for downlink in frequency range (FR) 1], 0.18 (for downlink in FR2), 0.08 (for uplink in FR1), and 0.10 (for uplink in FR2). Note that only one of the uplink or supplemental uplink carriers with the higher data rate is counted for a cell operating SUL. The approximate maximum data rate can be computed as the maximum of the approximate data rates computed using the above expression for each