3 Definitions of terms and abbreviations
23.5403GPP5G System: Technical realization of Service Based Short Message ServiceRelease 17Stage 2TS
3.1 Terms
For the purposes of the present document, the terms given in 3GPP TR 21.905 [1] and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in 3GPP TR 21.905 [1].
alert‑SC: service element provided by a GSM/UMTS/EPS/5GS PLMN to inform an SC which has previously initiated unsuccessful short message delivery attempt(s) to a specific MS/UE, that the MS/UE is now recognized by the PLMN to have recovered operation.
Gateway MSC For Short Message Service (SMS‑GMSC): function of an MSC capable of receiving a short message from an SC, interrogating an HLR/HSS/UDM for routing information and SMS info, and delivering the short message to the VMSC/SGSN/MME/SMSF of the recipient MS/UE.
Interworking MSC For Short Message Service (SMS‑IWMSC): function of an MSC capable of receiving a short message from within the PLMN and submitting it to the recipient SC.
IP-Short-Message-Gateway (IP-SM-GW): function responsible for protocol interworking between the IP-based UE and the SC.
Service Centre (SC): function responsible for the relaying and store and forwarding of a short message between an SME and an MS/UE.
3.2 Abbreviations
For the purposes of the present document, the abbreviations given in 3GPP TR 21.905 [1] and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in 3GPP TR 21.905 [1].
GPSI Generic Public Subscription Identifier
MNPF Mobile Number Portability Function
MO SMS Mobile Originated Short Message Service
MT SMS Mobile Terminated Short Message Service
NAS Non-Access-Stratum
NP Number Portability
NRF Network Repository Function
SBA Service Based Architecture
SBI Service Based Interface
SCP Service Communication Proxy
SMS Short Message Service
SM MO Short Message Mobile Originated
SM MT Short Message Mobile Terminated
SMSF Short Message Service Function
SMSoNAS SMS over NAS
UDM Unified Data Management