y (TAB), Type I multi-panel CSI, 503-505 domain Type I single-panel CSI, 503-505 resource allocation in, Transceiver calibration, 743 Type II CSI, 411-412, 642 397-400 Transceiver-unit virtualization resource assignment field, 400 (TXRU virtualization), 575 error, 66-67 Transit frequency, 717 and frequency synchronization, Transmission configuration Ultra-dense networks (UDN), 830-831 indication (TCI), 449 19-20, 46-56 time-critical applications, Transmission control protocol Ultra-high-resolution video 749-750 (TCP), 13, 217 streaming, 22 time-frequency resources Transmission modes (TMs), 897 Ultra-low-cost technologies, 83 bandwidth part, 393-396 Transmission resource pools, 822 Ultra-reliable communications, 20 934 Index Ultra-reliable low-latency control channels, 605-631 in RRC_IDLE, 248 communication (URLLC), link adaptation and power state transitions, 268 3, 13-14, 794 control, 643-651 states, 241-253 Unacknowledged mode (UM), physical-layer processing for temporary identifier, 115 138-139, 197-198, UL-SCH, 591 UE-specific PDCCH, 441 808-809 PUSCH, 631-638 UE-specific search spaces, Unidirectional mode (U mode), reference signals, 592-605 465-475 uplink MIMO schemes, user equipment-based mobility, Unified authentication framework, 638-643 265-268 Uplink shared channels (UL-SCH), wakeup time, 43 Unified data management (UDM), 138, 202, 774-775 User experienced data rate, 40 144-145 Urban Macro-mMTC test User service descriptions (USDs), Unified data repository (UDR), environment, 49, 307-309 803-804 144-145 Urban Macro-URLLC test User-plane (UP), 6 Universal filtered multicarrier environment, 45, 49, CIoT EPS optimization, (UFMC), 340-342 307-309 750-751 Universal subscriber identity Urban macrocell (UMa), 287 CU-UP entity, 26-27 module (USIM), 806-807 Urban microcell (UMi), 287 entity, 26 Unlicensed bands, 880-881 Use cases, 853-856 function separation, 51-52 Unlicensed spectrum, 845, User application, 106 handover procedures, 263-265 847-853 User datagram protocol (UDP), 35 integrity protection, 224-225 