8.21 Data Volume Report

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

8.21.1 General

The Data Volume Report procedure is used by CN to request the unsuccessfully transmitted DL data volume for specific RABs. This procedure only applies to the PS domain. The procedure uses connection oriented signalling.

NOTE: In line with TS32.240 [61], this procedure is not used and the RNC should ignore a DATA VOLUME REPORT REQUEST message if received.

8.21.2 Successful Operation

Figure 23: Data Volume Report procedure. Successful operation.

The procedure is initiated by CN by sending DATA VOLUME REPORT REQUEST message to UTRAN. This message shall contain the list of RAB ID IEs to identify the RABs for which the unsuccessfully transmitted DL data volume shall be reported.

At reception of a DATA VOLUME REPORT REQUEST message, the UTRAN shall produce a DATA VOLUME REPORT message. For each RAB successfully addressed within the RAB Data Volume Report List IE of the DATA VOLUME REPORT REQUEST message, the DATA VOLUME REPORT message shall include in the Unsuccessfully Transmitted DL Data Volume IE the amount of unsuccessfully transmitted DL data since the last data volume reported to the CN for the RAB and with the same data volume reference, if present. The message may also contain the Data Volume Reference IE.

The message may contain for each RAB successfully addressed a maximum of two RAB Data Volume Report Item IEs within the RAB Data Volume Report List IE for the case when there is a need to report two different data volumes since the last data volume indication to the CN. The UTRAN shall also reset the data volume counter for the reported RABs. The UTRAN shall send the DATA VOLUME REPORT message to the CN. Transmission and reception of the DATA VOLUME REPORT message terminate the procedure in the UTRAN and in the CN respectively.

The Data Volume Reference IE, if included, indicates the time when the data volume is counted.

8.21.3 Unsuccessful Operation

The RAB ID IE for each RAB for which UTRAN is not able to transfer a data volume report is included in the DATA VOLUME REPORT message together with a Cause IE, e.g. "Invalid RAB ID".

8.21.4 Abnormal Conditions

Not applicable.