User terminal, communication control method and chipset
摘要
說明書
[Ninth Embodiment]
Next, a ninth embodiment will be described. A system configuration, a basic operation of a UE-initiated switching control, a basic operation of cellular/WLAN aggregation, and an operation environment according to the ninth embodiment is similar to those of the first embodiment.
Hereinafter, an operation according to the ninth embodiment will be described while focusing on the differences from the operations according to the first to eighth embodiments.
The ninth embodiment relates to a handling when a problem occurs in the WLAN communication during the execution of the cellular/WLAN aggregation.
In the ninth embodiment, when a predetermined determination condition for switching from the WLAN communication to the cellular communication is satisfied during the execution of the cellular/WLAN aggregation, the UE 100 determines that a radio link failure (RLF) in the WLAN communication has occurred. The predetermined determination condition is the above-described fourth determination condition (that is, a WLAN side determination condition). This allows the UE 100 to appropriately suspend the WLAN communication. However, the UE 100 may continue the cellular communication while suspending the WLAN communication.
When determining that a radio link failure in the WLAN communication has occurred, the UE 100 may transmit by the cellular communication, to the eNB 200, a radio link failure report (RLF report) regarding the radio link failure. This allows the eNB 200 to grasp the situation regarding a problem in the WLAN communication and radio link failure.
