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    HANDOVER FAILURE DETECTION DEVICE, HANDOVER PARAMETER ADJUSTMENT DEVICE, AND HANDOVER OPTIMIZATION SYSTEM
    11.
    发明申请
    HANDOVER FAILURE DETECTION DEVICE, HANDOVER PARAMETER ADJUSTMENT DEVICE, AND HANDOVER OPTIMIZATION SYSTEM 有权
    切换失败检测装置，切换参数调整装置和切换优化系统

    公开(公告)号：US20150373772A1

    公开(公告)日：2015-12-24

    申请号：US14762663

    申请日：2013-11-14

    Applicant: NEC CORPORATION

    Inventor： Yoshinori WATANABE ,  Hiroto SUGAHARA ,  Yasuhiko MATSUNAGA ,  Yoshifumi YANAGISAKO

    IPC: H04W76/02 ,  H04W36/00

    CPC classification number: H04W76/19 ,  H04W36/0055

    Abstract: A handover failure detection device (121) detects at least one of handover failure types regarding outgoing handover from a first cell (131) managed by a first base station (111) by observing: (a) presence/absence of reception by the first base station (111) of an acknowledgment response to a handover command regarding first handover of a mobile terminal (101) from the first cell (131) to a second cell (132) managed by a second base station (112); and (b) presence/absence of a request for connection re-establishment from the mobile terminal (101) to the first cell (131), the request occurring after initiation of the first handover. As a result, it contributes to improvement of handover failure detection or reduction of handover failure in a situation where exchange of information between base stations is restricted.

    Abstract translation: 切换失败检测装置（121）通过观察以下步骤，检测关于从第一基站（111）管理的第一小区（131）的出站切换的切换失败类型中的至少一种：（a）第一基站的接收的存在/不存在 关于移动终端（101）从第一小区（131）到由第二基站（112）管理的第二小区（132）的第一切换的切换命令的确认响应的站（111）。 以及（b）是否存在从移动终端（101）到第一小区（131）的连接重新建立的请求，该请求是在第一切换开始之后发生的。 结果，在基站之间的信息交换被限制的情况下，有助于改善切换失败检测或减少切换失败。

    WIRELESS COMMUNICATION TERMINAL AND METHOD FOR ESTIMATING NETWORK COMMUNICATION LOAD IN COMMUNICATION NETWORK
    12.
    发明申请
    WIRELESS COMMUNICATION TERMINAL AND METHOD FOR ESTIMATING NETWORK COMMUNICATION LOAD IN COMMUNICATION NETWORK 审中-公开
    无线通信终端和通信网络中网络通信负载估计方法

    公开(公告)号：US20150312796A1

    公开(公告)日：2015-10-29

    申请号：US14650045

    申请日：2013-12-06

    Applicant: NEC Corporation

    Inventor： Jun SHIKIDA ,  Hiroto SUGAHARA ,  Hiroaki AMINAKA

    IPC: H04W28/02 ,  H04J13/00 ,  H04L5/00 ,  H04B17/26

    CPC classification number: H04W28/0247 ,  H04B17/26 ,  H04B17/327 ,  H04J13/00 ,  H04L5/005 ,  H04W24/08

    Abstract: A method for estimating a network communication load without performing actual communication and a wireless communication terminal are provided. A wireless communication terminal (10) connectable to a network (NW) includes a load estimation section (14), and the load estimation section (14) estimates a communication load of the network NW by using a first quality index that does not depend on a network communication load and a second communication index that depends on a network communication load.

    Abstract translation: 提供一种用于在不执行实际通信的情况下估计网络通信负载的方法和无线通信终端。 可连接到网络（NW）的无线通信终端（10）包括负载估计部（14），负载估计部（14）通过使用不依赖于第一质量指标的第一质量指标来估计网络NW的通信负荷 网络通信负载和依赖于网络通信负载的第二通信索引。

    APPARATUS AND METHOD FOR PROXIMITY-BASED SERVICE COMMUNICATION
    15.
    发明申请
    APPARATUS AND METHOD FOR PROXIMITY-BASED SERVICE COMMUNICATION 审中-公开

    公开(公告)号：US20180049259A1

    公开(公告)日：2018-02-15

    申请号：US15556191

    申请日：2015-11-18

    Applicant: NEC Corporation

    Inventor： Hiroaki AMINAKA ,  Hiroto SUGAHARA

    IPC: H04W76/02 ,  H04W56/00 ,  H04W8/00 ,  H04W72/04

    Abstract: A radio terminal (1) receives a request and a radio configuration from a network (100) when the radio terminal (1) can connect to the network (100). The request requests transmission of the radio configuration. The radio configuration includes a radio parameter for sidelink communication (102) with a second radio terminal (2) which is in a state of being unable to connect to the network (100). The sidelink communication includes at least, one of direct discovery and direct communication. The radio terminal (1) is further configured to transmit the radio configuration in response to this request, and to perform the sidelink communication in accordance with the radio configuration with the second radio terminal (2) that has received the radio configuration. It is thus, for example, possible to contribute to improvement of the sidelink communication in the partial coverage.

    RADIO COMMUNICATION SYSTEM, BASE STATION APPARATUS, RADIO TERMINAL, AND COMMUNICATION CONTROL METHOD
    19.
    发明申请
    RADIO COMMUNICATION SYSTEM, BASE STATION APPARATUS, RADIO TERMINAL, AND COMMUNICATION CONTROL METHOD 审中-公开
    无线电通信系统，基站装置，无线电终端和通信控制方法

    公开(公告)号：US20160262149A1

    公开(公告)日：2016-09-08

    申请号：US15028915

    申请日：2014-05-07

    Applicant: NEC CORPORATION

    Inventor： Hisashi FUTAKI ,  Hiroto SUGAHARA ,  Hiroaki AMINAKA

    IPC: H04W72/04 ,  H04W24/10 ,  H04W72/12 ,  H04W52/36 ,  H04W72/08 ,  H04W16/32

    Abstract: A radio communication system includes a first base station (11) that manages a first cell (110), a second base station (12) that manages a second cell (120), and a radio terminal (2). The radio terminal (2) supports dual connectivity involving a bearer split in which a first network bearer between the radio terminal (2) and a core network (3) is split over the first base station (11) and the second base station (12). The first base station (11) receives, from the second base station (12), bearer split status information about communication of the first network bearer in the second base station (12), and performs control of an access stratum related to the first network bearer. It is thus possible to contribute, for example, to an improvement in control of an access stratum when dual connectivity involving a bearer split is performed.

    Abstract translation: 无线电通信系统包括管理第一小区（110）的第一基站（11），管理第二小区（120）的第二基站（12）和无线电终端（2）。 无线电终端（2）支持涉及承载分裂的双重连接，其中无线终端（2）和核心网（3）之间的第一网络承载在第一基站（11）和第二基站（12） ）。 第一基站（11）从第二基站（12）接收关于第二基站（12）中的第一网络承载的通信的承载分割状态信息，并且执行与第一网络相关的接入层的控制 承载人 因此，当执行涉及承载拆分的双重连接时，例如有助于提高对接入层的控制。

    METHOD AND SYSTEM FOR CONTROLLING RADIO PARAMETER, NETWORK OPERATION MANAGEMENT APPARATUS, AND RADIO STATION
    20.
    发明申请
    METHOD AND SYSTEM FOR CONTROLLING RADIO PARAMETER, NETWORK OPERATION MANAGEMENT APPARATUS, AND RADIO STATION 审中-公开
    控制无线电参数的方法和系统，网络运行管理装置和无线电台

    公开(公告)号：US20160037370A1

    公开(公告)日：2016-02-04

    申请号：US14781744

    申请日：2014-03-31

    Applicant: NEC Corporation

    Inventor： Hisashi FUTAKI ,  Hiroto SUGAHARA ,  Kosei KOBAYASHI ,  Yoshinori WATANABE

    IPC: H04W24/10 ,  H04W24/08 ,  H04W64/00 ,  H04W72/08

    CPC classification number: H04W24/10 ,  H04L1/0001 ,  H04W16/18 ,  H04W24/02 ,  H04W24/08 ,  H04W28/18 ,  H04W64/00 ,  H04W72/085 ,  H04W84/18 ,  H04W88/02

    Abstract: A method and a radio parameter control system, as well as a network operation management apparatus and a radio station, are provided that enable optimization control for problems varying with sites of occurrence. Using location information at the time of measurement included in a measurement report from a radio terminal (30) located in a radio cell (C10), quality indicators based on measurement information acquired by the radio terminals or the radio station are compiled in association with areas (Ai), each of which is smaller than the radio cell (C10), and control of a radio parameter is performed in the radio cell or across a plurality of radio cells, based on a result of compilation of the quality indicators for each area.

    Abstract translation: 提供了一种方法和无线电参数控制系统，以及网络操作管理装置和无线电台，其能够针对出现位置变化的问题进行优化控制。 使用包含在位于无线电小区（C10）中的无线电终端（30）的测量报告中的测量时的位置信息，基于由无线电终端或无线电台获取的测量信息的质量指示符与区域 （Ai），其小于无线电小区（C10），并且基于各区域的质量指示符的编译结果，在无线电小区或多个无线电小区中执行无线参数的控制 。

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