Question: What triggers the measurement of the number of attempted WLAN releases from the LWA WLAN mobility set?
Option 1: Transmission of RRCConnectionReconfiguration message without wlan-ToReleaseList in lwa-MobilityConfig.
Option 2: Receipt of a specific packet from the UE.
Option 3: Transmission of RRCConnectionReconfiguration message which includes the wlan-ToReleaseList in the lwa-MobilityConfig of lwa-Configuration information element by the eNB.
Option 4: Handover from LTE to WLAN.
Explanation: The measurement is triggered when the eNB transmits an RRCConnectionReconfiguration message that includes the wlan-ToReleaseList in the lwa-MobilityConfig of lwa-Configuration information element, indicating an attempt to release the WLAN connection. This event marks the point at which the number of attempted WLAN releases from the LWA WLAN mobility set is measured.