Comments (RFCs) 321 satellite gateway (GW) 360 Resource Element Groups (REGs) 116 satellite regenerative architecture 355 Index satellite transmission technology 355 Session Management (SM) messages 26 S-Band 356 Short Messaging Service Function scaling 248 (SMSF) 26, 34 Scheduling Request (SR) 123 short PUCCH 126, 127 SCP 36, 37 SIB messages 78 SDP Answer 181 Signaling System No 7 (SS7) 186 Secondary Cell Group (SCG) 212 Signal to Interference and Noise secondary RAN node 11 Ratio (SINR) 130 Secondary Synchronization Signal Simple Network Management (SSS) 76, 101, 107, 108, 115 Protocol (SNMP) 260 Secure Access Service Edge (SASE) 336 Single Radio Voice Call Continuity Secure File Transfer Protocol (SFTP) 336 (SRVCC) 187 Secure Multipurpose Internet Mail SIP signaling exchange 181-183 Extensions (S/MIME) 333 for call tear down 184 Secure Shell (SSH) 336 Slot Format Indication (SFI) 91-93 Security Edge Protection Proxy (SEPP) 35 Slot Format Indicator (SFI) 117 server redundancy 253 Société Européenne des Satellites (SES) 340 Service-Based Architecture (SBA) 52, 206 Software-Defined Networking Service Centralization and (SDN) 259, 260, 279 Continuity (SCC) 179 high-level architecture 260 Service Communication Proxy (SCP) 30 Software-Defined Networks (SDNs) 310 service consumer 55 Software-Defined Wide Area Service Data Adaptation Network (SD-WAN) 260 Protocol (SDAP) 270 Sounding Reference Signal Service Delivery Adaptation (SRS) 77, 101, 123 Protocol (SDAP) 21 Southbound Interface (SBI) 261 Service-Level Agreements (SLAs) 281 Spectrum Access System (SAS) provider 250 Service Management & split bearer 212 Orchestrator (SMO) 270 SS block 101 service producer 55 composition 103, 104 Serving CSFC (S-CSCF) 178 for LTE-NR coexistence 105 Serving Gateway (SGW) 50, 210 mapping locations 104, 105 Session and Service Continuity (SSC) 44 set composition 106 modes 45 time index indication 106 Session Description Protocol (SDP) 181 SS burst set definition 102, 103 Session Initiation Protocol (SIP) 176 Standalone (SA) networks 