Diameter based protocols to support Short Message Service (SMS) capable Mobile Management Entities (MMEs)
The present document defines the Diameter-based interfaces specific to SMS when they are used in conjunction with the "SMS in MME" architecture specified in 3GPP TS 23.272 [2] or for SGSN supporting EPS interfaces, or the" SMS in 5GS" architecture specified in 3GPP TS 23.501 [21]. It comprises:
- the Diameter application for the S6c interface between the HSS/UDM and the central SMS functions (SMS-GMSC, SMS Router) ;
- the Diameter application
- for the SGd interface between the MME/SMSF, the SMS-IWMSC, the SMS-GMSC and the SMS Router.
- for the Gdd interface between the SGSN, the SMS-IWMSC, the SMS-GMSC and the SMS Router.
For the purpose of supporting SMS in 5GS, the UDM may implement the requirements specified in the present specification for HSS, with the following modification:
- "HSS" is to be replaced with "UDM".