8.32 Information Transfer

25.4133GPPRelease 17TSUTRAN Iu interface Radio Access Network Application Part (RANAP) signalling

8.32.1 General

The purpose of the Information Transfer procedure is to transfer information from the CN to the RNC.

This procedure uses connectionless signalling.

8.32.2 Successful Operation

Figure 39: Information Transfer procedure. Successful operation.

The CN initiates the procedure by sending an INFORMATION TRANSFER INDICATION message to the RNC.

NOTE: The CN should initiate the Information Transfer procedure, if information is available, at least after the CN or the RNC has performed the Reset procedure or whenever the respective information has changed in the CN.

Upon reception of the INFORMATION TRANSFER INDICATION message, the RNC shall store the received information and use it according to its purpose.

The INFORMATION TRANSFER INDICATION message shall contain the following IEs:

– Information Transfer ID

– Provided Data

– CN Domain Indicator.

When a CN node sends this message towards an RNC for which it is not the default CN node, the Global CN-ID IE shall be included.

If the RNC is able to process the information contained in the Provided Data IE, it shall respond with the INFORMATION TRANSFER CONFIRMATION message provided with the same Information Transfer ID IE as the one received in the INFORMATION TRANSFER INDICATION message.

The RNC shall include the Global RNC-ID IE and the CN Domain Indicator IE in the INFORMATION TRANSFER CONFIRMATION message.

If the Provided Data IE contains the Shared Network Information IE, the RNC shall replace existing Shared Network Information provided in a previous Information Transfer procedure by the newly provided Shared Network Information.

8.32.3 Unsuccessful Operation

Figure 40: Information Transfer procedure. Unsuccessful operation.

If the RNC is not able to process the information contained in the Provided Data IE the RNC shall regard the Information Transfer procedure as failed and send the INFORMATION TRANSFER FAILURE message to the CN. The message shall include the same value of the Information Transfer ID IE as received in the INFORMATION TRANSFER INDICATION message and set the Cause IE to an appropriate value.

The RNC shall include the Global RNC-ID IE and the CN Domain Indicator IE in the INFORMATION TRANSFER FAILURE message.

8.32.4 Abnormal Conditions

None.