The BBERF acts as a policy enforcement point for bearer binding,
uplink bearer binding verification and event reporting to the PCRF when Gxx applies.
This function entity is located at a GW (e.g. S-GW in the 3GPP access with PMIP based S5/S8 case, HSGW in the
HRPD case, A-GW in the non-3GPP access when PMIP or DSMIPv6 based mobility is used,
ePDG with PMIP based
S2b or Untrusted S2c case if Gxb* applies).
The BBERF in the ePDG supports only reporting of the UE's Local IP address and UDP port number to the PCRF.
Bearer binding and bearer binding verification functions are not supported.
Part of the operator network, which is outside the core network, which receives and processes CDR
files from the core network charging functions. It includes functions that can provide billing mediation and billing or
other (e.g. statistical) end applications. It is only applicable to offline charging.
The Border Gateway (BG) is a gateway between a PLMN supporting GPRS/EPC and an external inter-PLMN
backbone network used to interconnect with other PLMNs also supporting GPRS/EPC. The role of the BG is to provide
the appropriate level of security to protect the PLMN and its subscribers.
The BGCF determines the next hop for routing the SIP message. This determination may be based on information received in the signalling protocol, administrative information, and/or database access. For PSTN /CS Domain terminations, the BGCF determines the network in which PSTN/CS Domain breakout is to occur and, within the network where the breakout is to occur, selects the MGCF.
The BM-SC provides functions for MBMS user service provisioning and delivery. It may
serve as an entry point for content provider MBMS transmissions, used to authorise and initiate MBMS Bearer Services within the PLMN and can be used to schedule and deliver MBMS transmissions.
A generic Bootstrapping Server Function (BSF) and the UE mutually authenticate using the AKA protocol, and
agree on session keys that are afterwards applied between the UE and a Network Application Function (NAF).
The Base Station System (BSS) is the system of base station equipments (transceivers, controllers, etc.) which is viewed
by the MSC through a single A and/or Iu-CS interface as being the entity responsible for communicating with Mobile
Stations in a certain area. Similarly, in PLMNs supporting GPRS, the BSS is viewed by the SGSN through a single Gb
or Iu-PS interface.
When Intra Domain Connection of RAN Nodes to Multiple CN Nodes is applied, a BSS may
connect to several MSCs by several A and/or Iu-CS interfaces, and a BSS may connect to several SGSNs by several Gb
and/or Iu-PS interfaces. The functionality for the A interface is described in
TS 48.002 and for the Gb interface in
TS 23.060. The functionality for the Iu-CS interface is described in
TS 25.410 and for the Iu-PS interface in
The radio equipment of a BSS may support one or more cells. A BSS may consist of one or more base stations. Where
an Abis-interface is implemented, the BSS consists of one Base Station Controller (BSC) and one or more Base
Transceiver Station (BTS). The split of functions between BSS and CN for a Iu interface is described in the 25-series of
UMTS Technical Specifications.
The split of functions between BSS and CN for a A/Gb interface is described in the 48-series of GSM Technical
Specifications. The split of functions between BSS and CN for a Iu interface is described in the 25-series of UMTS