Neighbor Relation Application Programming Interface Access Point Name Automatic Protection Switching Augmented Reality Association of Radio Industries and Businesses Automatic Repeat Request Access stratum Apache Software Foundation Acronyms and Abbreviations aggregation site gateway application-specific integrated circuit Alliance for Telecommunications Industry Solutions asynchronous transfer mode Authentication Server Function B2B2C business to business to consumer Backhaul Adaptation Protocol Broadband Forum Baseband Unit Boundary Clock Best Effort Bidirectional Forwarding Detection Beam Failure Recovery Response Beam Failure Recovery Request Border Gateway Protocol bidirectional traffic on a single fiber basic input/output system Block Error Rate BNetzA Bundesnetzagentur Berkeley Software Distribution Buffer Status Report Broadcast Satellite Services Bandwidth Part C-RNTI Cell Radio Network Temporary Identifier C-SON centralized SON Carrier Aggregation Connection Admission Control Closed Access Group CAPEX Capital Expenditure code block Code block group Citizens Broadband Radio System continuity check Common Control Channel Control Channel Element China Communications Standards Association code division multiplexing Charging Data Record European Conference of Postal and Telecommunications Administrations Cell Global Identifier computer-generated Quadrature Phase Shift Keying (QPSK) sequence Cross-Link Interference Configuration Management Core Network container network function Acronyms and Abbreviations xxiii container network interface Coordinated Multi-Point CORESET control resource set Commercial Off-The-Shelf control plane Cyclic Prefix Coverage Per area Coverage Per Population Common Public Radio Interface central processing units channel quality indicator Change Request cloud RAN Cyclic Redundancy Check Cell-Specific Reference Signal cell site gateway Closed Subscriber Group Channel State Information cell site router Convolution Turbo Codes central unit Centralized Unit CU/DU central unit/distributed 