A.7 Data Volume Reporting

25.4673GPPRelease 17Stage 2TSUTRAN architecture for 3G Home Node B (HNB)

The data volume reporting function is used to report the volume of unsuccessfully transmitted DL data of PS RABs to the CN. If the CN has initiated the data volume report then in order to continue data volume reporting after the finalisation of the SRNS Relocation, the HNB-GW includes the Data Volume Reporting Indication in the RANAP RELOCATION REQUEST message towards the target HNB. The HNB-GW accumulates data volume reports from the different HNBs involved in subsequent inter-HNB intra-HNB-GW SRNS Relocations and reports the final value to the SGSN at RAB release.