Question: In UMTS to E-UTRAN relocation, what are the possible formats for the Target ID IE in the RANAP signalling?
Option 1: Only the Cell Global ID of the relocation target
Option 2: Either the eNB-ID or the Cell Global ID of the relocation target
Option 3: The target RNC-ID (for intra-UTRAN relocation only)
Option 4: Either the eNB-ID or the Corresponding RNC-ID of the relocation target
Explanation: In UMTS to E-UTRAN relocation, the Target ID IE can take two possible formats to identify the relocation target accurately. It can be either the direct identifier of the target eNodeB (eNB-ID) for straightforward identification or the Corresponding RNC-ID, ensuring compatibility and exclusivity with UTRAN configurations.