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    RANK INDICATOR BIT WIDTH DETERMINATION BASED ON MAXIMUM NUMBER OF MIMO LAYERS
    1.
    发明公开
    RANK INDICATOR BIT WIDTH DETERMINATION BASED ON MAXIMUM NUMBER OF MIMO LAYERS 审中-公开

    公开(公告)号：EP3910809A1

    公开(公告)日：2021-11-17

    申请号：EP21180274.9

    申请日：2016-06-23

    申请人： NTT DOCOMO, INC.

    发明人： Takahashi, Hideaki ,  Takeda, Kazuaki

    IPC分类号： H04B7/0417 ,  H04B7/06 ,  H04L5/00 ,  H04W8/24

    摘要： A user apparatus configured to perform communication with a base station in a mobile communication system that supports downlink spatial multiplexing, including: transmission means configured to transmit capability information of the user apparatus to the base station; reception means configured to receive configuration information from the base station; bit width determination means configured, if a parameter indicating a transmission mode corresponding to the downlink spatial multiplexing and predetermined additional information are received as the configuration information, to determine a bit width of a rank indicator based on the predetermined additional information.

    USER EQUIPMENT AND METHOD
    3.
    发明公开
    USER EQUIPMENT AND METHOD 审中-公开

    公开(公告)号：EP3595395A1

    公开(公告)日：2020-01-15

    申请号：EP19189055.7

    申请日：2015-03-25

    申请人： NTT DOCOMO, INC.

    发明人： Uchino, Tooru ,  Hapsari, Wuri Andarmawanti ,  Takahashi, Hideaki

    IPC分类号： H04W74/00 ,  H04W4/50 ,  H04W76/15 ,  H04W74/08

    摘要： Techniques are provided for allowing a base station indicating reconfiguration for user equipment 5 to detect whether an RA procedure performed in response to the reconfiguration indication is successful or unsuccessful. One aspect of the present invention relates to user equipment having a dual connectivity function to communicate with a master base station and 10 a secondary base station simultaneously, comprising: a transmission and reception unit configured to transmit and receive radio signals to/from the master base station and the secondary base station; an RA processing unit configured to perform a random access (RA) procedure; 15 and a timer management unit configured to activate a timer upon detecting an RA procedure activation event for triggering activation of the RA procedure for the secondary base station, wherein if the RA procedure performed in response to detection of the RA procedure 20 activation event has not been completed before expiration of the timer, the timer management unit indicates the triggering base station that the RA procedure has not been completed.

    Selection between X2 and S1 handover based on Closed Subscriber Group ID
    6.
    发明公开
    Selection between X2 and S1 handover based on Closed Subscriber Group ID 有权
    Auswahl zwischen X2和S1交接在Abhängigkeitder Closed Subscriber ID

    公开(公告)号：EP2677811A1

    公开(公告)日：2013-12-25

    申请号：EP13184536.4

    申请日：2010-12-03

    申请人： NTT DoCoMo, Inc.

    发明人： Takahashi, Hideaki ,  Hapsari, Wuri Andarmawanti ,  Okamoto, Takeshi ,  Iwamura, Mikio ,  Ishii, Minami

    IPC分类号： H04W36/08 ,  H04W48/02 ,  H04W84/10 ,  H04W84/04 ,  H04W92/12

    CPC分类号： H04W36/08 ,  H04W8/08 ,  H04W8/186 ,  H04W12/08 ,  H04W36/0038 ,  H04W36/0055 ,  H04W84/045 ,  H04W92/045 ,  H04W92/20

    摘要： The application relates to handover in mobile communication systems and in particular to a radio base station in the form of an HeNB of an Long Term Evolution LTE system. In such systems, the configuration is conventionally such that a Mobility Management Entity MME performs access control for a mobile station UE to a handover destination cell in a handover procedure. In a case where the "CSG (Closed Subscriber Group) ID" of the handover destination cell and the "CSG ID" of the handover source cell are different, access control by the above-described mobile switching center MME is needed, and therefore an S1 handover must be performed, rather than an X2 handover. Moreover, even in a case where the "CSG ID" of the handover destination cell and the "CSG ID" of the handover source cell are identical, then in a case where information involved in the term of validity of the "CSG ID" of the cells that the mobile station UE is able to access is not promptly synchronized and is not consistent between the mobile station UE and a network, then access control by the MME is still needed, and therefore the S1 handover must be performed, rather than the X2 handover. Therefore, the application proposes that in the handover procedure of the mobile station UE, the source HeNB determines whether or not the "CSG ID" of the handover destination cell and the "CSG ID" of the handover source cell are consistent, by comparing "CSG ID" contained in "Measurement Report" received from the mobile station UE and "CSG ID" of the subordinate cell being managed by the HeNB. In a case where it is determined that the two are consistent, a decision is made to perform an X2 handover, and in a case where is determined that the two are not consistent, then a decision is made to perform an S1 handover.

    摘要翻译： 该应用涉及移动通信系统中的切换，特别涉及长期演进LTE系统的HeNB形式的无线基站。 在这样的系统中，通常，移动性管理实体MME在切换过程中对移动台UE执行切换目的地小区的接入控制。 在切换目的地小区的“CSG（Closed Subscriber Group，ID）”和切换源小区的“CSG ID”不同的情况下，需要上述移动交换中心MME的接入控制， 必须执行S1切换，而不是X2切换。 此外，即使在切换目的地小区的“CSG ID”和切换源小区的“CSG ID”相同的情况下，在“CSG ID”的有效期中涉及的信息 移动台UE能够接入的小区不是迅速同步的，并且在移动台UE与网络之间不一致，所以仍然需要MME的接入控制，因此必须执行S1切换，而不是 X2切换。 因此，应用提出，在移动台UE的切换过程中，源HeNB通过比较“移动台UE”的切换目的地小区的“CSG ID”和切换源小区的“CSG ID”是否一致， 由移动台UE接收的“测量报告”中包含的“CSG ID”和由HeNB管理的下级小区的“CSG ID”。 在确定两者一致的情况下，进行X2切换的判定，在判断为两者不一致的情况下，进行S1切换。

    Mobile communication system
    7.
    发明公开
    Mobile communication system 有权
    移动通信系统

    公开(公告)号：EP2600649A1

    公开(公告)日：2013-06-05

    申请号：EP13155390.1

    申请日：2010-04-21

    申请人： NTT DOCOMO, INC.

    发明人： Hapsari, Wuri Andarmawanti ,  Takahashi, Hideaki ,  Umesh, Anil ,  Iwamura, Mikio ,  Ishii, Minami

    IPC分类号： H04W16/26 ,  H04W36/06 ,  H04W92/16

    CPC分类号： H04B7/15 ,  H04B7/2606 ,  H04W36/0016 ,  H04W36/08 ,  H04W84/047 ,  H04W92/12 ,  H04W92/20

    摘要： A radio base station according to the present invention comprising : a mobile communication system, a first relay node and a radio base station are connected via a radio bearer, a second relay node and a radio base station are connected via a radio bearer, a mobile station is configured so as to conduct a handover process between a first state wherein a radio bearer is established with the first relay node in order to communicate via the first relay node and the radio base station, and a second state wherein a radio bearer is established with the second relay node in order to communicate via the second relay node and the radio base station and the mobile station is configured such that in the handover process, control signals involved in the handover process are transmitted and received via the radio bearer between the first relay node and the radio base station, and via the radio bearer between the second relay node and the radio base station.

    摘要翻译： 根据本发明的无线电基站包括：移动通信系统，第一中继节点和无线电基站经由无线电承载连接，第二中继节点和无线电基站经由无线电承载连接，移动电话 站被配置为在与第一中继节点建立无线承载以便经由第一中继节点和无线基站进行通信的第一状态与建立无线承载的第二状态之间执行切换处理 与所述第二中继节点进行通信，以便经由所述第二中继节点和所述无线电基站进行通信，并且所述移动台被配置为使得在所述切换处理中，涉及所述切换处理的控制信号经由所述第一中间节点和所述第二中间节点之间的无线电承载 中继节点和无线电基站，并且经由第二中继节点和无线电基站之间的无线电承载。

    Wireless base station, mobile station, radio communication system, and radio communication method
    8.
    发明公开
    Wireless base station, mobile station, radio communication system, and radio communication method 有权
    无线基站，移动站，无线电通信系统和无线电通信方法

    公开(公告)号：EP1978691A3

    公开(公告)日：2011-11-09

    申请号：EP08006795.2

    申请日：2008-04-03

    申请人： NTT DOCOMO, INC.

    发明人： Takahashi, Hideaki ,  Maeda, Noriyuki ,  Miura, Shunji ,  Asakura, Hiromitsu

    IPC分类号： H04W72/04

    CPC分类号： H04L5/0053 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/0048 ,  H04L5/0058

    摘要： The object of the present invention is to achieve reduction of interference between cells and improvement of maximum throughput so as to improve spectrum efficiency. A wireless base station which transmits a radio signal between itself and a plurality of mobile stations by means of OFDMA includes: a multiplexing part for generating user data; a channel assignment control part for selecting a plurality sets of sub-carriers among a plurality of sub-carriers so as to constitute a radio frame containing sub-channels assigned to each of the plurality sets of sub-carriers and for setting in the radio frame the user data and control data by means of orthogonal frequency division multiplexing; and a transmission part for transmitting a radio signal containing the radio frame; where, the channel assignment control part is constituted so that the radio frame is divided into 2 zones for the control and user data and all the sub-channels in the zone for control data are divided into groups for each of sectors; the control data is allocated on the corresponding divided groups; and the user data is allocated on all the sub-channels in the zone for user data.

    Altering a MAC multicast address in the forwarding tables of a LAN-switch after a handover between 2 access points belonging to the same LAN
    9.
    发明公开
    Altering a MAC multicast address in the forwarding tables of a LAN-switch after a handover between 2 access points belonging to the same LAN 有权
    根据同一LAN的两个接入点之间的切换在一个LAN交换机的路由表改变MAC多点传送地址

    公开(公告)号：EP1686739A1

    公开(公告)日：2006-08-02

    申请号：EP06002058.3

    申请日：2006-02-01

    申请人： NTT DoCoMo INC.

    发明人： Takahashi, Hideaki ,  Motegi, Masayuki ,  Kato, Yasuhiro ,  Nakamura, Takehiro

    IPC分类号： H04L12/56 ,  H04L12/28 ,  H04Q7/38

    CPC分类号： H04L49/3009 ,  H04L12/185 ,  H04L45/00 ,  H04L45/16 ,  H04L49/201 ,  H04W36/0011

    摘要： A communication system (100) includes a relay apparatus (AP) which offers an access link to a mobile terminal, a layer 2 switch (3) which relays data between the relay apparatus and a router on a next hop from a communication destination terminal of the mobile terminal (MN) and a route information notification unit. The route information notification unit notifies to the relay apparatus (AP) and the layer 2 switch (3) in a subnet where the mobile terminal (MN) is present, route information including a data link layer unicast address of a packet addressed to the mobile terminal (MN), and a data link layer multicast address thereof in a case where the mobile terminal (MN) is activated and in a case where the mobile terminal (MN) switches a connection.

    摘要翻译： 一种通信系统（100）包括继电器装置（AP）其中提供访问链接到一个移动终端，第2层交换机（3）从一个通信目的终端上的下一跳的中继装置和路由器之间中继数据 所述移动终端（MN）和路径信息通知单元。 路径信息通知单元通知到中继装置（AP），并在一个子网中的第2层交换机（3）其中，所述移动终端（MN）的存在，路线信息包括寻址到移动分组的数据链路层的单播地址 终端（MN），和一个数据链路层组播在移动终端（MN）被激活的情况下，并且在所述移动终端（MN）切换连接的情况下，它们的地址。