g processor/host, 173 multicore central processing unit selection physical layer/5G modem, 173 criteria, 174-179 radio frequency subsystem, 174 PCIe performance, 179-181 Intellectual Property Rights (IPR), 184 RU, 154-171 Inter Cell Interference Coordination (ICIC), 205 scalability, 139-141 Inter process communication, 194-196, 194f, 195f Hardware offload, 179 Inter Processor Communication (IPC), 194-195 Hardware system dimensioning Intermediate Frequency interface (IF interface), centralized/distributed unit use-case dimensioning for throughput, 103-108 International Electrotechnical Commission (IEC), distributed unit internal IO, 115-117 eCPRI, fronthaul bandwidth and latency, security requirements, 212-214 112-115 security algorithms for 4G/LTE, 212t HARQ process count dimensioning, 126-127 security algorithms for 5G/NR, 213t memory dimensioning, 117-126 Internet Protocol (IP), 43, 51-52 radio unit, 127-136 Internet Protocol Security (IPSec), 51-52, 145, use-case dimensioning for latency, 108-110 users/transmission time interval, 110-111 Interoperability and Test (IoT), 1, 329 "Heisenbugs", 344-345 development testing, 329-332 High reliability, 352-353 front-, mid-, and backhaul testing, 345 Index operator acceptance testing, 345-346 C-V2X, 356-357 performance testing, 340-345 macro cell, 223-224 regulatory approval testing, 346-347 Look-aside Acceleration Model, 193 system test setup, 332-340 Lookup Tables (LUTs), 81, 233 Interoperability testing, 338-340 Low physical layer, 158, 228-229 plug fest, 338-340 beamforming and time/frequency domain use-case scenarios, 338 conversion, 228-229 User Equipment test pool, 338 PRACH extraction and filtering, 229 Inverse discrete Fourier transform (IDFT), Low-priority fronthaul (LPF), 93 237-238 Lower Layer Split/CU plane (LLS-CU), 31 Inverse fast Fourier transform (IFFT), 237-238 Lower Level Split (LLS), 31 JESD, 77, 162-163 Management plane (MP), 3 Massive multiple-input, multiple-output, 19-20 Master Information Block (MIB), 71 Key performance indicators (KPI), 36, 33