8.10a Inter-system Intra-SGSN change

23.2463GPPArchitecture and functional descriptionMultimedia Broadcast/Multicast Service (MBMS)Release 17TS

For an MBMS UE transitioning between UTRAN and A/Gb mode GERAN, the procedures are the same as the Iu mode to A/Gb mode Intra SGSN Change and A/Gb mode to Iu mode Intra SGSN Change procedures specified in TS 23.060 [15].

Furthermore, the same considerations on Radio Access Technology changes apply as specified in the impacts of applying flow based charging specified in TS 23.060 [15], i.e. the SGSN shall send an Update MBMS UE Context Request to the GGSN. Subsequently the GGSN shall send an Update MBMS UE Context Request to the BM-SC as described in the Inter SGSN Routeing Area Update procedure in clause 8.10.