Question: What action does a Target RNC take if it receives another RELOCATION REQUEST message on the same Iu connection after initially receiving one?
Option 1: Send a RELOCATION FAILURE message with a cause indicating 'Duplicate Request'
Option 2: Initiate a new Relocation Resource Allocation procedure in parallel
Option 3: Request additional information from the Source RNC to clarify the duplication
Option 4: Discard the latter message and continue the original Relocation Resource Allocation procedure normally
Explanation: Receiving a duplicate RELOCATION REQUEST on the same connection should not interrupt the ongoing process. Discarding the latter message ensures continuity of the initial relocation procedure, preventing unnecessary complications or failures in the handover process, thus maintaining network stability and efficiency during mobile device relocations.