8.42 MBMS RAB Establishment Indication

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

8.42.1 General

The purpose of the MBMS RAB Establishment Indication procedure is to inform the CN (PS domain) of the establishment of the MBMS RAB corresponding to the MBMS Iu signalling connection used for this procedure.

The procedure uses connection oriented signalling.

8.42.2 Successful Operation

Figure 55: MBMS RAB Establishment Indication procedure. Successful operation.

When the RNC has not yet established the MBMS RAB for a particular Multicast Service and is informed that a given UE joined this particular Multicast Service, the RNC shall initiate the MBMS RAB Establishment Indication procedure and send the MBMS RAB ESTABLISHMENT INDICATION message to the CN. If NNSF is active, the selection of the CN node is implementation dependant.

The MBMS RAB ESTABLISHMENT INDICATION message shall include the Transport Layer Address IE and the Iu Transport Association IE.

8.42.3 Abnormal Conditions

Not applicable.