3 Definitions, symbols and abbreviations
32.2993GPPCharging managementDiameter charging applicationsRelease 17Telecommunication managementTS
3.1 Definitions
For the purposes of the present document, the terms and definitions given in TR 21.905 [100] and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in TR 21.905 [100].
middle tier TS: term used for the 3GPP charging TSs that specify the domain / subsystem / service specific, online and offline, charging functionality. These are all the TSs in the numbering range from TS 32.250 to TS 32.27x, e.g. TS 32.250 [10] for the CS domain, or TS 32.270 [30] for the MMS service. Currently, there is only one "tier 1" TS in 3GPP, which is the TS 32.240 that specifies the charging architecture and principles. Finally, there are a number of top tier TSs in the 32.29x numbering range ([50] ff) that specify common charging aspects such as parameter definitions, encoding rules, the common billing domain interface or common charging applications.
offline charging: charging mechanism where charging information does not affect, in real-time, the service rendered
online charging: charging mechanism where charging information can affect, in real-time, the service rendered and therefore a direct interaction of the charging mechanism with session/service control is required
3.2 Symbols
For the purposes of the present document, the following symbols apply:
Rf Offline Charging Reference Point between a 3G network element and the CDF.
Ro Online Charging Reference Point between a 3G network element and the OCS.
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
5GS 5G System
5GC 5G Core
ACA ACcounting-Answer
ACR ACcounting-Request
ADC Application Detection and Control
AoC Advice of Charge
AS Application Server
ASA Abort-Session-Answer
ASR Abort-Session- Request
AVP Attribute Value Pair
CCA Credit-Control-Answer
CCR Credit-Control-Request
CDF Charging Data Function
CDR Charging Data Record
CEA Capabilities-Exchange-Answer
CER Capabilities-Exchange-Request
CGI Cell Global Identification
CI Cost-Information
CIoT Cellular Internet of Things
CP Control Plane
CSG Closed Subscriber Group
CSG ID Closed Subscriber Group Identity
DBPA Diameter Base Protocol Accounting
DCD Dynamic Content Delivery
DPA Disconnect-Peer-Answer
DPR Disconnect-Peer-Request
DRM Digital Rights Management
DWA Device-Watchdog-Answer
DWR Device-Watchdog-Request
ECGI E-UTRAN Cell Global Identifier
ECUR Event Charging with Unit Reservation
FQDN Fully Qualified Domain Name
FUI Final-Unit-Indication
HSGW HRPD Serving GateWay
GSU Granted-Service-Unit
IEC Immediate Event Charging
IM Instant Messaging
IMS IP Multimedia Subsystem
IMS-AGW IMS Access Media Gateway
IWK-SCEF Interworking SCEF
MSCC Multiple Services Credit-Control
NetLoc Network provided Location information
NIDD Non-IP Data Delivery
NNI Network to Network Interface
NR New Radio
OCS Online Charging System
PFDF Packet Flow Description Function
ProSe Proximity-based Services
RAA Re-Auth-Answer
RAI Routeing Area Identity
RAR Re-Auth-Request
RAVEL Roaming Architecture for VoicE over IMS with Local breakout
SAI Service Area Identifier
SCCP Signalling Connection Control Part
SCEF Service Capability Exposure Function
SCS Services Capability Server
SDP Session Description Protocol
RCAF RAN Congestion Awareness Function
TAI Tracking Area Identity
TDF Traffic Detection Function
TLTRI T8 Long Term Transaction Reference ID
TrGW Transition GateWay
TWAG Trusted WLAN Access Gateway
TWAN Trusted WLAN Access Network
UWAN Untrusted Wireless Access Network
VCS Voice Call Service