RAT - Radio Access TechnologyThis indicates the type of radio technology to access the CN (Core Network). Example technologies being UTRA (UMTS Terrestrial Radio Access), CDMA2000... View more
Rate centreThe geographic area used by local exchange carriers to set rate boundaries for billing and for issuing phone numbers. ... View more
Rate matchingThis process is carried out so that the block size matches the radio frame(s). It will either repeat bits to increase the rate or puncture bits to dec... View more
RAU - Routing Area UpdateA GPRS mobile will perform a Routing Area Update in the Ready and Standby state. The RAU is triggered when the mobile crosses a RA (Routing Area) boun... View more
Rayleigh FadingIn electromagnetic wave propagation, phase interference fading caused by multipath effects. ... View more
Rayleigh ScatteringScattering caused by refractive index of objects that are small compared to the wavelength. ... View more
RB - Radio BearerThe service provided by the Layer 2 for the transfer of user data between UE (User Equipment) and UTRAN (UMTS Terrestrial Radio Access Network). ... View more
RB - Resource BlockIn LTE a RB or PRB ( Physical Resource Block) is defined as consisting of 12 consecutive subcarriers for one slot (0.5 ms). A PRB is the smallest elem... View more
RBG - Resource Block GroupThis is a term used in the E-UTRA when the Distributed Virtual Resource Block concept is used. It effectively is part of the distribution/allocation m... View more
RBOC - Regional Bell Operating CompaniesThe term RBOC (Regional Bell Operating Company) describes one of the U.S.regional telephone companies which were created as a result of the break-up o... View more
RBSN - Reduced Block Sequence NumberIn GPRS each downlink RLC/MAC (Radio Link Control / Medium Access Control) control block contains a Reduced Block Sequence Number bit. At the time tha... View more
RC - Radio ConfigurationThe term Radio Configuration identifies a set of forward and reverse traffic channel transmission formats. At the physical layer these are characteriz... View more
RC4RC4 is a proprietary cipher algorithm which was developed and licensed by RSA Security Inc. The algorithm is used in many technologies including the I... View more
RC5RC5 is a symmetric block cipher designed by RSA Security Inc in 1994. RC5 uses a block size of between 32bits and 128bits and a key length of between ... View more
RC6RC6 is a symmetric block cipher based on RC5 and was selected as one of the candidates for the AES (Advanced Encryption Standard). It was designed by ... View more
RCAF - RAN Congestion Awareness FunctionThe RCAF is a network element which monitors congestion in the E-UTRAN and UTRAN. The RCAF will collect information related to user plane congestion f... View more
RCF - Radio Control FunctionAn IN (Intelligent Network) functional entity providing access to users/terminals. It provides the network call related call unrelated and radio link ... View more
RCS - Rich Communication ServicesA GSMA initiative which aims to standardize the next generation of IP based services in order to support worldwide cross network interoperability. Ser... View more
RD - Route DistinguisherA BGP speaker can only advertise one route per IP prefix and can therefore completely omit a route to a VPN if its addressing overlaps a different VPN... View more
Ready StateThis is a GPRS state that indicates the mobile has received or is waiting for resources from the network. In this state the mobile is carrying out cel... View more