onnectivity NR user plane Network Repository Function Network Resource Model NRPPa NR Positioning Protocol A Non-Standalone Network Slice Instance Network Slice Management Function NSSAI Network Slice Selection Assistance Information Network Slice Selection Function Network Slice Subnet Instance NSSMF Network Slice Subnet Management Function network slice selection policies Non-terrestrial network network time protocol NWDAF network data analytics function O-RAN Distribution Unit O-RAN Open Radio Access Network O-RAN radio unit Open Air Interface Operation, Administration and Maintenance operations, administration and management Operations, Administration, and Maintenance Acronyms and Abbreviations OBSAI Open Base Station Architecture Initiative OpenCellular original equipment manufacturer orthogonal frequency division multiplexing Optical Internetworking Forum Open Networking Automation Platform OPEN-O OPEN-Orchestrator Project Operational Expenditure ORAN FH O-RAN Fronthaul Open Radio equipment Interface OpenAirInterface Software Alliance Open Source Initiative Other System Information Open Source MANO Operations Support System over-the-air Optical Transport Network Open Virtual Switch OWAMP One-Way Active Measurement Protocol polling bit Packet Data Network Gateway Priority Access License peak to average power ratio Provider Backbone Bridge Network Physical Broadcast Channel Prioritized Bit Rate Path Computation Element PCell Primary Cell Policy Control Function Physical Cell Identity priority code point Policy and Charging Rules Function Packet Delay Budget PDCCH Physical Downlink Control Channel Packet Data Convergence Protocol PDCP-RLC Packet Data Convergence Protocol-Radio Link Control plesiochronous digital hierarchy Packet Data Network packet data protocol PDSCH Physical Downlink Shared Channel Protocol Data Unit packet delay variation Provider Edge Paging Frame power flux density Acronyms and Abbreviations PDN Gateway PGW-C PGW control-plane function Physical Layer Phase Locked Loop Public Land Mobile N