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    METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING DATA BY USING PLURALITY OF CARRIERS IN MOBILE COMMUNICATION SYSTEMS
    32.
    发明申请
    METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING DATA BY USING PLURALITY OF CARRIERS IN MOBILE COMMUNICATION SYSTEMS 审中-公开

    公开(公告)号：US20190098571A1

    公开(公告)日：2019-03-28

    申请号：US16185774

    申请日：2018-11-09

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Soeng Hun KIM ,  Jae Hyuk JANG ,  Kyeong In JEONG

    IPC: H04W52/02 ,  H04W8/24 ,  H04W36/00

    Abstract: The method for transmitting and receiving data at a base station in a wireless communication system according to one embodiment of the present invention includes the steps of receiving a performance report from a terminal, determining whether the addition of a serving cell is necessary, when the addition of the serving cell is necessary, transmitting a request for receiving a cell identifying signal to one or more other base stations on the basis of the received performance repotand transmitting a request for transmitting the cell identifying signal to the terminal. According to the embodiment, in a network in which a small cell and a macro cell are overlapped and operated, the terminal can minimize battery consumption and quickly recognize the small cell.

    METHOD AND APPARATUS FOR APPLYING A TIME ALIGNMENT TIMER IN A WIRELESS COMMUNICATION SYSTEM USING A CARRIER AGGREGATION TECHNIQUE
    36.
    发明申请
    METHOD AND APPARATUS FOR APPLYING A TIME ALIGNMENT TIMER IN A WIRELESS COMMUNICATION SYSTEM USING A CARRIER AGGREGATION TECHNIQUE 有权

    公开(公告)号：US20160021630A1

    公开(公告)日：2016-01-21

    申请号：US14860112

    申请日：2015-09-21

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Jae Hyuk JANG ,  Soeng Hun KIM ,  Kyeong In JEONG ,  Boon Loong NG ,  Gert-Jan VAN LIESHOUT

    IPC: H04W56/00 ,  H04W74/08

    CPC classification number: H04W56/001 ,  H04W36/04 ,  H04W48/12 ,  H04W56/0005 ,  H04W56/0045 ,  H04W64/00 ,  H04W74/0833 ,  Y02D70/126 ,  Y02D70/20

    Abstract: The present invention involves defining the operation of a terminal for determining which time alignment timer is to be applied to a certain condition when specific time alignment timers operate for each carrier-wave group in the event a wireless communication system uses a carrier aggregation technique. According to the present invention, a terminal may perform communication without malfunctions using a time alignment timer suitable for a certain condition. In detail, a method for a terminal to operate a time alignment timer according to the present invention comprises the steps of: receiving, from a base station, a message including a timing advance command and an index on a timing advance group (TAG); and operating the time alignment timer for the TAG, wherein the index has a value of 00 when the TAG includes a first cell. In the meantime, a method for a terminal to operate a time alignment timer according to the present invention comprises the steps of: operating a first time alignment timer for a first timing advance group (TAG) including a first cell; operating a second time alignment timer upon receipt of a timing advance command for a second TAG that does not include the first cell; and, if the first time alignment timer has expired, deeming the second time alignment timer to also be expired. In addition, a method for a base station to control a time alignment timer according to the present invention comprises the steps of: determining whether or not an uplink timing of a terminal needs correction; and transmitting a message including a timing advance command and an index on a timing advance group (TAG), wherein the index has a value of 00 when the TAG includes a first cell.

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