5.3b Inter-RAT Handover (E-UTRAN to GERAN A/Gb mode)
3GPP43.129Packet-switched handover for GERAN A/Gb modeRelease 17Stage 2TS
5.3b.1 General
This procedure and the corresponding signalling flows are defined in 3GPP TS23.401 [33].
For performing the inter-RAT handover from E-UTRAN to GERAN A/Gb mode the pre-conditions are:
– The UE is in ECM-CONNECTED state (E-UTRAN Active mode);
– The BSS supports PFM (Packet Flow Management) procedures.
5.3b.2 Preparation phase
The detailed signalling flows are specified in 3GPP TS 23.401 [33] in sub-clause 5.5.2.3.2.
5.3b.3 Execution phase
The detailed signalling flows are specified in 3GPP TS 23.401 [33] in sub-clause 5.5.2.3.2.