10 Fundamental procedures within SMS

23.0403GPPRelease 17Technical realization of the Short Message Service (SMS)TS

The procedures for providing SMS over a generic IP CAN is described in 3GPP TS 23.204 [42] (see clause 6).

The SMS comprises 3 fundamental procedures:

1) Short message mobile terminated. This procedure consists of all necessary operations to:

a) transfer a short message or status report from the SC to the MS;

b) return a report to the SC, containing the result of the message transfer attempt.

2) Short message mobile originated. This procedure consists of all necessary operations to:

a) transfer a short message from the MS to the SC;

b) return a report to the MS, containing the result of the message transfer attempt.

3) Transfer of an Alert. This procedure consists of all necessary operations for an HLR or a VLR to initiate a transfer of an Alert to a specific SC, informing the SC that the MS has recovered operation.

3GPP TS 29.002 [15] defines operations necessary for the provision of the Short Message Service. The operations defined in clause 10 describe the requirement that the Short Message Service puts upon the network functionality. If discrepancies exist in nomenclature, it is the 3GPP TS 29.002 [15] that shall be the reference.

Annex C indicates the flow of primitives and parameters during the short message transfer between the SC and the MS. Both the Mobile terminated and the Mobile originated cases are covered.