BASE STATION, WLAN TERMINAL NODE, AND RADIO TERMINAL

    公开(公告)号:US20180255601A1

    公开(公告)日:2018-09-06

    申请号:US15970043

    申请日:2018-05-03

    CPC classification number: H04W76/18 H04W76/10 H04W76/38 H04W84/12 H04W88/06

    Abstract: A radio terminal according to an embodiment is to be connected to a base station of WWAN (Wireless Wide Area Network). The radio terminal receives, from the base station, a setting message instructing a connection process between the radio terminal and a WLAN (Wireless Local Area Network). The setting message including timer information setting a timer for determining a failure of the connection process between the radio terminal and the WLAN. The radio terminal starts a timer based on the timer information. The radio terminal determines that the connection process has failed, if the timer expires. The radio terminal transmits, to the base station, a failure message indicating a failure of the connection process. The failure message includes information indicating that a cause of the failure of the connection process is timeout.

    MOBILE COMMUNICATION SYSTEM AND MOBILE COMMUNICATION METHOD

    公开(公告)号:US20180206222A1

    公开(公告)日:2018-07-19

    申请号:US15918939

    申请日:2018-03-12

    CPC classification number: H04W72/048 H04W8/005 H04W48/16 H04W76/14

    Abstract: A radio terminal includes a receiver, a controller, and a transmitter. The receiver receives first information on radio resources for direct communication from a base station by broadcast and second information on a threshold value from the base station. The controller performs the direct communication by use of a radio resource autonomously selected among the radio resources. The receiver directly receives a radio signal from another radio terminal during performing the direct communication by use of the radio resources, and the controller compares received power of the radio signal with the threshold value of the second information. The transmitter notifies the base station of first information on the received power in response to the received power being larger than the threshold value, and does not notify the base station of the information on the received power in response to the received power being smaller than the threshold value.

    USER TERMINAL AND BASE STATION
    189.
    发明申请

    公开(公告)号:US20180103397A1

    公开(公告)日:2018-04-12

    申请号:US15837729

    申请日:2017-12-11

    Abstract: A system, user terminal, and processor determine whether to omit transmission of a random access preamble signal in a handover procedure from the first cell controlled by a first base station to a second cell controlled by a second base station when the user terminal transmits a notification indicating that a connection with the second cell is completed. The second base station notifies the user terminal of information via the first base station in response to admitting a handover request, the information indicating first information for adjusting a transmission timing of the notification and second information on a radio resource for transmitting the notification to the second base station. The user terminal determines that it omits transmission of the random access preamble signal on a basis of the first information, and transmits notification to the second base station by use of the second information in response to the determination.

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