Question: In an MBMS GC delivery session with enabled ROHC (Robust Header Compression) via MB2, which of the following statements about ROHC profiles is CORRECT?
Option 1: Multiple ROHC profiles (e.g., RTP/UDP/IP and UDP/IP) can be used simultaneously within a single GC delivery session.
Option 2: The uncompressed IP profile (identifier 0x0000) and RTP/UDP/IP profile (identifier 0x0001) must use the same context ID for all flows.
Option 3: ROHC segmentation is mandatory to ensure efficient packet transmission in MBMS GC delivery sessions with enabled ROHC.
Option 4: Exactly one of the specified ROHC profiles (RTP/UDP/IP with 0x0001, UDP/IP with 0x0002, or uncompressed IP with 0x0000) shall be used throughout the session.
Explanation: According to MBMS specifications for GC delivery sessions with ROHC enabled via MB2, only one of the specified ROHC profiles is permitted for use throughout the session, ensuring consistency and predictability in header compression and decompression processes, crucial for reliable multimedia broadcast/multicast services.