| R&D |
Research
and Development |
| R&TTE |
Radio
and Telecommunications Terminal Equipment |
| RA |
Registration
Authority |
| RA |
Routing
Area |
| RAB |
Radio
Access Bearer |
| RAB-ID |
Radio
Access Bearer Identity |
| RACH |
Random
Access Channel |
| RAD |
Required
Activity Detection |
| RADIUS
AAA |
Remote
Authentication Dial In User Service for AAA management for computers to
connect and use a network service |
| RAI |
Routing
Area Identity |
| RAM |
Remote
Application Management |
| RAN |
Radio
Access Network |
| RAN1 |
Working
group within 3GPP focused on physical layer specifications |
| RAN4 |
Working
group within 3GPP focused on radio performance and protocol aspects |
| RANAP |
Radio
Access Network Application Part |
| RAND |
Random
Challenge Number |
| RAR |
Random
Access Response |
| RA-RNTI |
Random
Access Radio Network Temporary Identity |
| RAT |
Radio
Access Technology |
| RAU |
Routing
Area Update |
| RB |
Radio
Bearer |
| RB |
Resource
Blocks |
| RBG |
Radio
Bearer Group |
| RBW |
Resolution
Bandwidth |
| RCLP |
Relative
Carrier Leakage Power |
| RCS |
Rich
Communication Suite |
| RDC |
Radio
Data Com (French) |
| RDN |
Radio
Distribution Network |
| RDX |
Radio
Digital Cross Domain |
| RE |
Resource
Element |
| REFSENS |
Reference
Sensitivity |
| REG |
Resource
Element Group |
| Rel-X |
Release
99, Release 4, Release 5, etc. from 3GPP standardization |
| RES |
Response |
| REST |
Representational
State Transfer |
| RF |
Radio
Frequency |
| RF |
Rating
Function |
| RF |
Re-segmentation
Flag |
| RFFE |
RF
Front End |
| Rf/Ga |
GPRS/Web
services interface to record data for offline charging |
| RFIC |
Radio
Frequency Integrated Circuit |
| RFSP |
RAT/Frequency
Selection Priority |
| RG |
Residential
Gateway |
| RI |
Rank
Indicator / Indication |
| RIM |
Radio
access network Information Management |
| RIV |
Resource
Indication Value |
| RIT |
Radio
Interface Technology |
| RL |
Radio
Link |
| RLC |
Radio
Link Control |
| RLC |
Release
Complete Message |
| RLF |
Radio
Link Failure |
| RL-ID |
Radio
Link Identity |
| RLS |
Radio
Link Set |
| RLT |
Radio
Link Timeout |
| RMC |
Reference
Measurement Channel |
| RMS |
Root
Mean Square |
| RN |
Relay
Node |
| RNC |
Radio
Network Controller |
| RNL |
Radio
Network Layer |
| RNS |
Radio
Network Subsystem |
| RNSAP |
Radio
Network Subsystem Application Part |
| RNTI |
Radio
Network Temporary Identity / Identifier |
| RNTP |
Relative
Narrowband Transmit (Tx) Power |
| RoHC |
Robust
Header Compression |
| RoI |
Return
of Investment |
| ROT |
Rise
Over Thermal noise |
| R-PDCCH |
Relay
Physical Downlink Control CHannel |
| R-PDCCH |
Reverse
Packet Data Control CHannel |
| RPLMN |
Registered
PLMN. |
| RR |
Radio
Resource |
| RR |
Round
Robin |
| RRC |
Root
Raised Cosine |
| RRC |
Radio
Resource Control |
| RRH |
Remote
Radar Head |
| RRH |
Remote
Radio Head |
| RRM |
Radio
Resource Management |
| RRU |
Remote
Radio Unit |
| RS |
Reference
Signal |
| RSCP |
Received
Signal Code Power |
| RSN |
Retransmission
Sequence Number |
| RSRP |
Reference
Signal Received Power |
| RSRQ |
Reference
Signal Received Quality |
| rSRVCC |
Reverse
Single Radio Vocie Call Continuity |
| RSS |
Root
Sum Square |
| RSSI |
Received
Signal Strength Indicator |
| RSTD |
Reference
Signal Time Difference |
| RT |
Real
Time |
| RTCP |
RT
Control Protocol |
| RTD |
Round
Trip Delay |
| RTP |
Real
Time Protocol |
| RTP |
Real-Time
Transport Protocol |
| RTSP |
Real
Time Streaming Protocol |
| RTT |
Radio
Transmission Technology |
| RTT |
Round
Trip Time |
| RTWP |
Received
Total Wideband Power |
| RU |
Resource
Unit |
| RV |
Redundancy
Version |
| Rx |
Receiver |
| RX-D |
Receiver
Diversity |
| RXLEV |
Received
power level |
| RXQUAL |
RX
Received signal quality |
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