Question: In UTRAN Iu interface RANAP signalling, what is the primary purpose of including the Trace Reference IE in the CN DEACTIVATE TRACE message?
Option 1: To initiate a new tracing procedure for a specific UE (User Equipment)
Option 2: To identify which ongoing trace shall be stopped
Option 3: To provide additional security authentication for the CN (Core Network)
Option 4: To request tracing for all UEs currently connected to the RAN (Radio Access Network)
Explanation: The Trace Reference IE is crucial for pinpointing the specific trace that needs to be terminated when the CN sends a DEACTIVATE TRACE message. This ensures that only the intended tracing operation is halted, without affecting other ongoing traces.