ut, "Anchored NR-U", 13-14 247-248 Announce messages, 281 opportunistic scheduler, 243-245 Antenna diversity at UE, 353 quality of Service scheduler, 245-246 Antenna Element (AE), 168 wireless scheduler algorithm Application architecture, 210-212 active user selection, 251 Application Function (AF), 47 architectural framework for, 249-254 Application Programming Interface (API), 16 frequency allocation, 252-253 Application-specific integrated circuit (ASIC), 5, primary user selection, 251-252 secondary and remainder user selection, Arg(max) vectorization, 258-260 253-254 example of input array, 258f static and regular scheduling, 250, 250f vectorized comparison to find highest value, user database reduction, 249f Base Transceiver Station (BTS), 43 Arm, 176-177, 183, 185 Baseband to radio frequency conversion, 158-159 Artificial Intelligence (AI), 2 intermediate frequency, 160f ASN.1, 96-97 zero-intermediate frequency, 160f Asynchronous network, 275-276 Baseboard Management Controller (BMC), 184 Asynchronous Transfer Mode (ATM), 245 BBDEV, 194-196 Authentication and Key Agreement (AKA), 47 Beam switch process steps, 171 Authentication Server Function (AUSF), 47 Beamforming and time, 228-229 Index Behavior Aggregate, 99 Cellular network synchronization requirements, Best Effort (BE), 99 290-291 Best Master Clock Algorithm, 281 frequency accuracy and stability, 290 Bit Error Rate (BER), 124 time accuracy, 291 BitIsClear, 324 Central Processing Unit (CPU), 109, 184, 215, 309, BitIsSet, 324 331, 359 Black box testing, 340-343 cores, 140 cell performance, 342-343 loading, 319 latency, 342 Central unit (CU), 3, 30-33, 43, 48-59, 103, 254, stability, 342 329. See also Radio Unit (RU) throughput, 341 based small cell solution, 139 PDCP throughput test setup, 341f blades perform CU processing, 143 Board bring-up software, 141 control plane user plane split and central unit/ Board Support Package software (BSP software), distributed unit interface, 50-51 141, 185-186, 329 dual and multiconnectivity, 56-59 Boot process and a