Section: 5.7A.4 Secondary RAT Periodic Usage Data Reporting Procedure
Content: Periodic reporting of the Secondary RAT usage data is an optional function. When eNodeB, as defined in bullet e) of clause 5.7A.2, is configured with a "time interval for Secondary RAT usage data reporting", the eNodeB shall send a RAN Usage Data Report message for periodic reporting purposes to the MME only when this timer expires for a UE for which Secondary RAT usage data reporting is ongoing. The timer runs from the last usage reporting for the UE. The MME also indicates to SGW if secondary RAT usage data reporting to the PGW is active. The procedures 5.7A.3-1 to 5.7A.3-2 in its entirety is executed to provide periodic reporting of Secondary RAT usage data to the Serving GW and to the PDN GW when PGW secondary RAT usage data reporting is active. At use for periodic usage data reporting, the procedure 5.7A.3-1 uses signalling from eNodeB which does not include a handover flag.