Question: What are the primary purposes of the Physical Shared Channel Reconfiguration procedure in UTRAN's Iub interface Node B Application Part (NBAP) signalling?
Option 1: To manage only HS-DSCH related resources for FDD modes.
Option 2: Exclusively for handling E-DCH related resource assignments.
Option 3: To assign and manage both HS-DSCH and E-DCH related resources, including modifications to PDSCH and PUSCH Sets in TDD modes.
Option 4: Solely for deleting existing channel configurations without additions or modifications.
Explanation: The Physical Shared Channel Reconfiguration procedure serves multiple purposes: assigning HS-DSCH related resources, handling E-DCH related resource assignments, and in TDD modes, managing (adding, modifying, deleting) PDSCH Sets and PUSCH Sets, highlighting its comprehensive role in UTRAN's NBAP signalling for efficient network resource management.