COMMUNICATION METHOD
    2.
    发明公开

    公开(公告)号:US20240090075A1

    公开(公告)日:2024-03-14

    申请号:US18514565

    申请日:2023-11-20

    发明人: Masato FUJISHIRO

    摘要: A communication method comprises receiving, by a user equipment from a base station, a message for transitioning a user equipment from a Radio Resource Control (RRC) connected state to a RRC inactive state, the message including a first parameter and a second parameter, which are applied in the RRC inactive state; applying, by the user equipment, the first parameter in response to satisfying a first condition; and applying, by the user equipment, the second parameter in response to not satisfying the first condition.

    Method and apparatus for analyzing cause of link failure

    公开(公告)号:US10075856B2

    公开(公告)日:2018-09-11

    申请号:US15245920

    申请日:2016-08-24

    申请人: FUJITSU LIMITED

    IPC分类号: H04W24/02 H04W36/34 H04L12/26

    摘要: A method and apparatus for analyzing cause of link failure, includes: receiving, by a base station where the user equipment is present when a link failure is observed by the user equipment, identification information transmitted by other base stations or the user equipment, the identification information including: identification associated with the user equipment and/or identification of the user equipment in the base station; and determining, by the base station when it determines that the identification information is stored in the base station, that the link failure is resulted from a handover preparation failure.

    METHOD OF HANDOVER, COMMUNICATION SYSTEM AND COMMUNICATION DEVICE

    公开(公告)号:US20180109980A1

    公开(公告)日:2018-04-19

    申请号:US15717251

    申请日:2017-09-27

    申请人: FUJITSU LIMITED

    发明人: Takeshi Ohtani

    IPC分类号: H04W36/00 H04W36/34 H04B1/713

    摘要: A method of handover includes executing a first communication between a first communication device and a terminal device using a first plurality of channels, acquiring connection information indicating the first communication and first channel information indicating a first plurality of channels, specifying, based on the first channel information and second channel information indicating a second plurality of channels to be used by a second communication device, a third plurality of channels included in both of the first plurality of channels and the second plurality of channels, switching the first communication with the terminal device from using the first plurality of channels to using the third plurality of channels based on the third channel information, and executing, based on the connection information, a handover process from the first communication to a second communication which is executed between the second communication device and the terminal device using the third plurality of channels.

    METHODS AND SYSTEMS FOR SELECTING SIM CARD
    9.
    发明申请

    公开(公告)号:US20180014239A1

    公开(公告)日:2018-01-11

    申请号:US15118890

    申请日:2015-12-23

    摘要: The present invention discloses methods and systems for selecting at least one SIM card for data communication at a wireless communication device which is capable of housing a plurality of SIM cards. When a switching condition is satisfied, the wireless communication device selects a second SIM card group, and disconnects one or more connections established using any non-second group SIM card. Non-second group SIM cards are SIM cards that are not in the second SIM card group. A selected SIM card from the second SIM card group is then used for data communications. The steps are repeated until (i) the switching condition is no longer satisfied, (ii) no more SIM cards selected from the second SIM card group can be used for data communications or (iii) no more connection is made using non-second group SIM cards