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    MOBILE COMMUNICATION SYSTEM AND COMMUNICATION METHOD
    31.
    发明申请
    MOBILE COMMUNICATION SYSTEM AND COMMUNICATION METHOD 审中-公开

    公开(公告)号：US20200187065A1

    公开(公告)日：2020-06-11

    申请号：US16794397

    申请日：2020-02-19

    Applicant: NEC Corporation

    Inventor： Sadafuku HAYASHI

    IPC: H04W36/00 ,  H04W4/24 ,  H04M15/00 ,  H04L12/14 ,  H04W72/04

    Abstract: A mobile communication system which can transfer information on the number of packets counted up until then by a base station of a mobile source, to a base station of a mobile target, even when a terminal performs a handover. UE moves to a Target eNode B, but a Source eNode B decides to perform a handover, and the Source eNode B includes information on the number of packets counted up until then in a Handover Request message to the Target eNode B, so as to notify the Target eNode B. After receiving a Handover Confirm message from the UE, the Target eNode B includes information on the number of packets received from the Source eNode B in a Handover Complete message transmitted to a CN Node, so as to notify the CN Node.

    RADIO ACCESS NETWORK NODE, RADIO TERMINAL, CORE NETWORK NODE, AND METHOD THEREFOR
    33.
    发明申请
    RADIO ACCESS NETWORK NODE, RADIO TERMINAL, CORE NETWORK NODE, AND METHOD THEREFOR 审中-公开

    公开(公告)号：US20190191348A1

    公开(公告)日：2019-06-20

    申请号：US16321998

    申请日：2017-05-15

    Applicant: NEC Corporation

    Inventor： Hisashi FUTAKI ,  Sadafuku HAYASHI

    IPC: H04W36/14 ,  H04W36/00

    CPC classification number: H04W36/14 ,  H04W36/0038 ,  H04W36/12 ,  H04W92/20

    Abstract: In response to receiving from a source RAN node (2), on a direct interface (101), a message requesting a handover of a radio terminal (1) from a first network to a second network, a target RAN node (3) receives at least one of slice information and flow information from a core network (5), and controls communication of the radio terminal (1) based on at least one of the slice information and the flow information. The slice information relates to a network slice in the second network. The flow information relates to at least one session to be established in the second network, serving as a bearer-less network, in order to transfer at least one packet flow of the radio terminal (1). It is thus possible, for example, to provide an Inter-RAT handover procedure involving transfer of handover signaling messages on a direct inter-base-station interface.

    APPARATUS AND METHOD FOR RADIO COMMUNICATION
    35.
    发明申请
    APPARATUS AND METHOD FOR RADIO COMMUNICATION 审中-公开

    公开(公告)号：US20180241516A1

    公开(公告)日：2018-08-23

    申请号：US15751721

    申请日：2016-09-07

    Applicant: NEC CORPORATION

    Inventor： Sadafuku HAYASHI ,  Daisuke OGURA ,  Hisashi FUTAKI

    IPC: H04L1/18

    CPC classification number: H04L1/1864 ,  H04W4/00 ,  H04W28/02 ,  H04W48/18 ,  H04W80/06 ,  H04W88/06

    Abstract: To enable delivery confirmation for data transmitted from a base station to a terminal apparatus via the access point. An apparatus according to an example aspect of the present invention includes an information acquisition unit configured to acquire a data unit from a packet data convergence protocol (PDCP) layer of a base station, and a communication processing unit configured to transmit the data unit to a terminal apparatus via an access point of a wireless local area network using a protocol enabling delivery confirmation.

    BASE STATION APPARATUS AND METHOD THEREOF
    36.
    发明申请
    BASE STATION APPARATUS AND METHOD THEREOF 审中-公开

    公开(公告)号：US20180199245A1

    公开(公告)日：2018-07-12

    申请号：US15741641

    申请日：2016-06-21

    Applicant: NEC Corporation

    Inventor： Hisashi FUTAKI ,  Sadafuku HAYASHI

    IPC: H04W36/00 ,  H04W36/04 ,  H04W92/20 ,  H04W72/04

    Abstract: A secondary base station (2) receives an SeNB addition request message (302) from a second master base station (3) while providing a radio terminal (4) with a secondary cell group (SCG) for DC in cooperation with a first master base station (1). If the SeNB addition request message (302) explicitly or implicitly indicates that a master base station in DC for the radio terminal (4) is to be changed from the first master base station (1) to the second master base station (3), the secondary base station (2) considers that the SeNB addition request message (302) requests modification of the SCG that has already been configured. It is thus, for example, possible to contribute to performing a procedure for changing a master base station in Dual Connectivity (DC) by using existing inter-base station interface procedures and inter-base station signaling messages.

    WIRELESS COMMUNICATION SYSTEM, BASE STATION, AND COMMUNICATION METHOD
    38.
    发明申请
    WIRELESS COMMUNICATION SYSTEM, BASE STATION, AND COMMUNICATION METHOD 审中-公开

    公开(公告)号：US20170311335A1

    公开(公告)日：2017-10-26

    申请号：US15523532

    申请日：2015-08-28

    Applicant: NEC Corporation

    Inventor： Sadafuku HAYASHI

    IPC: H04W72/08 ,  H04W72/04 ,  H04W16/32 ,  H04W76/04 ,  H04W88/06 ,  H04W88/08

    Abstract: A wireless communication system of the present invention includes a first base station (30) and a second base station (20) configured to be capable of transmitting downlink data received from a core network to a terminal via the second base station (20) and the first base station (30). The second base station (20) transmits, to the first base station (30), information for identifying downlink data to be discarded from among the downlink data transmitted to the first base station (30) and a command for discarding the downlink data identified by the information. The first base station (30) discards downlink data not transmitted to the terminal from among the downlink data identified by the information.

    COMMUNICATION SYSTEM, BASE STATION, HOST NODE, AND COMMUNICATION METHOD
    40.
    发明申请
    COMMUNICATION SYSTEM, BASE STATION, HOST NODE, AND COMMUNICATION METHOD 有权

    公开(公告)号：US20160353408A1

    公开(公告)日：2016-12-01

    申请号：US15233377

    申请日：2016-08-10

    Applicant: NEC Corporation

    Inventor： Sadafuku HAYASHI

    IPC: H04W68/00 ,  H04W68/02

    CPC classification number: H04W68/005 ,  H04W68/02 ,  H04W92/20

    Abstract: An object of the present invention is to provide a communication system, a base station, a host node, and a communication method in order to address one or more of the above-described problems. A communication system according to the present invention is a communication system including: a base station (10) and a host node (40) that communicates with the base station (10). The base station (10) included in the communication system transmits to the host node (40) setting information indicating whether or not a paging message transmitted from the host node (40) can be transmitted to other base stations, and the host node (40) receives the setting information from the base station (10).

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