R	R<=50m;PL=98.45+20*log10
R	RMS
R	Reacting
R	Relative
R	Reserved
R	Retry
R1	Reserved 1
R2	Release 2
R2	Reserved 2
RA	Random Access
RA	Rate Adaptation
RA	Resource allocation
RA	Routeing Area
RA	Router Advertisement
RA	Routing Area
RA	Routing Areas
RA	Rural Area
RA	routing area
RAA	Re-Auth-Answer
RAA	Re-Authorization-Answer
RAAI	Registration Area Allocation Indication
RAB	Radio Access Bearer
RAC	Radio Admission Control
RAC	Routeing Area Code
RAC	Routing Area Code
RADIUS	Remote Authentication Dial In User Service
RAF	Repository Access Function
RAI	Routeing Area Identity
RAI	Routing Area Identification
RAI	Routing Area Identity
RAI	routing area identification
RAML	RESTful API Modeling Language
RAN	Radio Access Network
RAN	Radio Access Networks
RANAP	Radio Access Network Application Protocol
RAR	Random access response
RAR	Re-Auth-Request
RAR	Re-Authorization-Request
RAS	Radio Astronomy Service
RAS	Radio Astronomy Services
RAS	Radio Astronomy System
RAT	Radio Access Technology
RAT	Radio-Access-Technology
RAT	radio access technology
RB	Radio Bearers
RBB	received block bitmap
RBC	Radio Bearer Control
RBC	Radio Block Centre
RBER	Residual Bit Error Rate
RBER	Residual Bit Error Ratio
RBSN	Reduced Block Sequence Number
RBU	Right-Back-Up
RC	Radio Controller
RC	Reverberation Chamber
RC	Reverse Charging
RC	reverberation chamber
RCA	Root Cause Analysis
RCAF	RAN Congestion Awareness Function
RCDE	Relative Code Domain Error
RCEF	RRC Connection Establishment Failure
RCEF	Radio Connection Establishment Failure
RCH	Resume Call Handling
RCI	Radio Configuration Identifier
RCI	Release call indicator
RCR	Radio Channel Requirement
RCS	Rich Communication Services
RCS	Rich Communication Suite
RD	Rate-Distortion
RD	Remote Descriptor
RDD	Relative Duplex Distance
RDF	Resource Definition Framework
RDF	Routing Determination Function
RDI	resource duration indicator
RDM	Reference Data Model
RDN	RF Distribution Network
RDR	Reduced DCI Reception
RDS	Reliable Data Service
RE	Radiated Emission
RE	Radio Equipments
RE	re-establishment
REG	Resource Element Groups
REM	Radio Environment Measurement
RF	REQUESTING FUNCTION
RF	Radio Frequency
RF	Rating Function
RFD	Right Front Down
RFM	Remote File Management
RFPM	Radio Frequency Pattern Matching
RG	relative grant
RI	Range indicator
RI	Request Interceptor
RI	rank indication
RI	rank indicator
RIA	Reporting-Information-Answer
RIA	Routing-Info-Answer
RIB	Radiated Interface Boundary
RIBS	Radio-interface based synchronization
RIM	RAN Information Management
RIM	Remote Interference Management
RIM	Reverse Inter Modulation
RIR	Reporting-Information-Request
RIR	Routing-Info-Request
RIT	Radio Interface Technology
RIV	resource indication value
RLC	Radio Link Control
RLC/MAC	Radio Link Control /Medium Access Control
RLF	Radio Link Failure
RLM	radio link monitoring
RLOS	Restricted Local Operator Services
RLP	Radio Link Protocol
RLR	Receive Loudness Rating
RLR	Receiving Loudness Rating
RLS	Resource List Server
RM	Resynchronization Marker
RM&O	Resource Management &Operations
RMC	Reference Measurement Channel
RMF	Recommended Modulation Format
RMS	Remote Management Server
RMS	Root Mean Square
RMSU	Remote Mobile Switching Unit
RMTC	RSSI measurement time configuration
RN	Radio Network
RN	Relay Node
RNA	RAN Notification Area
RNC	Radio Network Conditions
RNC	Radio Network Controller
RNE	Regular network elements
RNL	Radio Network Layer
RNN	Recurrent Neural Network
RNR	Receive Not Ready
RNR	Receiver Not Ready
RNR	receive not ready
RNS	Radio Network System
RNSAP	Radio Network Subsystem Application Part
RNTI	Radio Network Temporary Identifiers
RNTI	Radio Network Temporary Identities
RNTI	Radio Network Temporary Identity
RNTP	Relative Narrowband TX Power
RO	Registration Operator
ROAAI	Release Over Any Access Indication
ROI	Region-of-Interest
ROM	Receive Only Mode
ROM	Receive-Only-Mode
ROSE	Remote Operations Service Element
RP	Reception Point
RP	Relaying Party
RP	Relying Party
RP	Report Period
RPASP	Remotely Piloted Aircraft Systems Panel
RPC	Reduced Partial CDR
RPC	Remote Provisioning Client
RPC	reduced partial CDRs
RPG	Role playing game
RPN	Radio Part Number
RPR	Reduced PDCCH Reception
RPR	Reject paging request
RPSI	Reference picture selection indication
RPT	Radio Planning Tool
RPTA	Radio Planning Tool Access
RQA	Reflective QoS Attribute
RQI	Reflective QoS Indication
RQI	Reflective QoS Indicator
RR	Radio Regulations
RR	Radio Resource
RR	Receive Ready
RR	Receiver Ready
RR	Routing Rule
RR	receive ready
RRBP	Relative Reserved Block Period
RRC	Radio Resource Control
RRC	Range Rate Correction
RRH	Remote Radio Heads
RRH	Remote radio head
RRLP	Radio Resource LCS Protocol
RRM	Radio Resource Management
RRS	Reconfigurable Radio Systems
RRS	Restricted Resources Subframe
RRT	Rating Region Table
RS	Reference Signal
RS	Reference Symbol
RS	Registration Service
RS	reference signal
RS	reset signal
RSAP	Reference Signal Antenna Power
RSARP	Reference Signal Antenna Relative Phase
RSC	Relay Service Code
RSCP	Received Signal Code Power
RSE	Radiated Spurious Emission
RSHF	Remote Speech Handler Function
RSI	Resource Status Indicator
RSK	receiver secret key
RSM	Reference Site Method
RSN	Reset Sequence Number
RSN	Retransmission sequence number
RSP	Remote SIM Provisioning
RSP	Route Selection Protocol
RSRP	Reference Signal Received Power
RSRP	Reference symbol received power
RSRP	Referenced Signal Received Power
RSRQ	Reference Signal Received Quality
RSRQ	Reference symbol received quality
RSRQ	reference signal received quality
RSSE	Reduced State Seq. Est.
RSSI	Received Signal Strength Indicator
RSSI	received signal strength indication
RST	Running Status Table
RSTD	Reference Signal Time Difference
RSU	Relay switch unit
RSU	Road Side Unit
RSZI	Regional Subscription Zone Identity
RTA	Registration-Termination-Answer
RTC	Real time counter
RTCBC	Request-to-Call-Back CSN
RTCP	Real Time Control Protocol
RTD	Relative Time Difference
RTD	round trip delay
RTFR	Real Time Flexible Rating
RTI	Radio Transaction Identifier
RTR	Registration-Termination-Request
RTS	Radiated Two Stage
RTS	Real-time strategy
RTSP	Real Time Streaming Protocol
RTT	Real-Time Text
RTT	Round Trip Time
RTT	round-trip time
RTTI	Reduced Transmission Time Interval
RTTI	Reduced Transmit-Time-Interval
RTWP	Received Total Wideband Power
RU	Resource utilization
RUA	Remote User Agent
RUC	Road-User Charging
RURA	Regional User Range Accuracy
RV	Redundancy Version
RV	Remote Validation
RV	redundancy version
RVLC	Reversible Variable Length Code
RVLC	Reversible Variable Length Coding
RWT	Response wait time