defined networks physical SL-BCH, 828-829 wafer level technology, 718 (SDN), 1, 13, 18, 26-36 physical SL-DCH, 828 Silicon germanium (SiGe), 717 for air-interface flexibility, PSCCH, 825-827 Single-carrier frequency division 19-20 PSSCH, 823-825 multiple access (SC- applications, 26-27 physical resources and resource FDMA), 323-325, 353, architecture pool, 821-823 757, 813 APIs, 28 physical signals Single-entry PHR MAC CE, aspects, 29-36 DM-RSs, 829-830 controller, 27-28 synchronization signals, Single-input-multiple-output framework and main 830-831 channel (SIMO channel), components, 30 and radio access protocols, 552-553 networking devices, 28 807-811 Single-input-single-output Sounding reference signal timing alignment, 821 channel (SISO channel), (SRS), 460, 601-605, 733 transmission modes, 829-830 552-553 SRS-RSRP, 509 Sidelink broadcast channel Single-link channel model, Source layer-2 ID, 838 (SL-BCH), 809-810 307-309 South-bound interface, 28 Sidelink broadcast control Single-network slice selection Space-selective fading, 296 channel (SBCCH), 807, assistance information Spaced-frequency correlation (S-NSSAI), 41, 130 function, 293-294, 296 Sidelink control information (SCI), Single-node 4G BBU to separated Spaced-time correlation function, CU/DU architecture, 295-296, 327-328 Sidelink discovery reference signal 30-32 Sparse code multiple access received power Single-tone frequency hopping, (SCMA), 350, 359-363 (SD-RSRP), 817 769-770 Spatial correlation, 312 Sidelink ID (SID), 830-831 Single-user MIMO techniques Spatial multiplexing, 96-97 Sidelink radio network temporary (SU-MIMO techniques), Spatial RX processing, 424 identifier (SL-RNTI), 826 558-564 Spatial-resolution CSI, 502 932 Index Special cell (SpCell), 202, 396 transceiver and antenna design PSS, 479 Spectrum considerations, 727-733 SS-RSRP, 506 allocation, 800-802 Subband filtering, 336-337 SS-SINR, 508 regional-specific ITS, 801 Subcarrier mapping in DFT-S- SSS, 479-481 flexibility, 655 OFDM, 331-332 Synchronous Ethernet (SyncE), 74, harmoni