4 Architecture considerations

32.2743GPPCharging managementRelease 17Short Message Service (SMS) chargingTelecommunication managementTS

4.1 High level SMS architecture

The high level SMS architecture is as defined in TS 23.040 [7].
Only the SMS Router, SMS-SC, IP-SM-GW and the SMSF are within the scope of the present document.
The details for the other nodes in the SMS architecture are defined in TS 32.250 [9] and TS 32.251 [10].

4.2 SMS offline charging architecture

The architecture for SMS offline charging is described in figure 4.2.1

Figure 4.2.1: SMS offline charging architecture

The SMS Nodes for which this architecture applies are the SMS-SC and IP-SM-GW.

Details on the interfaces and functions can be found in TS 32.240 [2] for the general architecture components.
The Rf interface is described in clause 6.1.1, Ga in clause 6.1.2, and Bsm in clause 6.1.3 of this document.

4.3 SMS online charging architecture

For online charging, the relevant SMS nodes utilise the Ro interface and application towards the OCS as specified in TS 32.299 [4]. The Ro reference point covers all online charging functionality required for SMS.

The SMS online charging architecture is depicted in figure 4.3.1

Figure 4.3.1: SMS online charging architecture

Details on the interfaces and functions can be found in TS 32.240 [2] for the general architecture components,
TS 32.296 [11] for the OCS, and TS 32.299 [4] for the Ro application.

4.4 SMS converged charging architecture

The architectural options for SMS converged charging are depicted in figure 4.4.1 in service-based representation for CHF:

Figure 4.4.1: SMS converged charging architecture

Architectural options of figure 4.4.1 apply to any SMS converged charging architecture of this clause.

The SMS Node for which this architecture applies is the SMSF.

The general architecture components can be found in TS 32.240 [2].

Ga is described in clause 5.2.4 and Bsm in clause 5.2.5 of this document, and Nchf is described in TS 32.290 [19].

Figure 4.4.2 depicts the SMS converged charging architecture for non-roaming in reference point representation:

Figure 4.4.2: SMS converged charging architecture non-roaming reference point representation