公开(公告)号：US20150312769A1

公开(公告)日：2015-10-29

申请号：US14647988

申请日：2013-07-10

Applicant: NEC CORPORATION

Inventor： Masato SHINDO

IPC: H04W16/10 ,  H04W52/02

CPC classification number: H04W16/10 ,  H04W16/08 ,  H04W52/02 ,  H04W52/0206 ,  H04W92/20 ,  Y02D70/1262

Abstract: Provided are a mobile communication system, a base station, a communication method and a program whereby respective cells can be changed to an energy saving cell or a Compensation Cell, while minimizing the occurrence of interference. The mobile communication system according to the present invention has a base station (11) having a cell (1), and a base station (20) having a cell (2). Furthermore, the base station (20) according to the present invention sends first information indicating that preparations for change of the cell (1) to an energy saving state have been completed, to the base station (20).

Abstract translation: 提供了一种移动通信系统，基站，通信方法和程序，其中各个小区可以改变为节能小区或补偿小区，同时最小化干扰的发生。 根据本发明的移动通信系统具有具有小区（1）的基站（11）和具有小区（2）的基站（20）。 此外，根据本发明的基站（20）向基站（20）发送指示将小区（1）的改变为节能状态的准备完成的第一信息。

公开(公告)号：US20140226626A1

公开(公告)日：2014-08-14

申请号：US14255244

申请日：2014-04-17

Applicant: NEC Corporation

Inventor： Masato SHINDO

IPC: H04W36/00 ,  H04W72/04

CPC classification number: H04W36/0055 ,  H04W28/04 ,  H04W36/08 ,  H04W60/00 ,  H04W72/0466

Abstract: A processing apparatus operates aiming to realize handover to each mobile station while reducing a failure rate of the handover even when PSC Confusion is generated. More specifically, when a connection of the mobile station is switched from a first base station to a second base station, the processing, apparatus determines the second base station by selecting from a plurality of base stations according to connection history information indicating a success or a failure of past switching of the connection from the first base station to at least one of the plurality of base stations.

Abstract translation: 即使在产生PSC混淆的情况下，也可以减少切换的故障率，从而实现对每个移动台的越区切换。 更具体地，当移动站的连接从第一基站切换到第二基站时，处理装置根据指示成功的连接历史信息来从多个基站中进行选择来确定第二基站， 将连接从第一基站切换到多个基站中的至少一个的故障。

公开(公告)号：US20180167909A1

公开(公告)日：2018-06-14

申请号：US15889653

申请日：2018-02-06

Applicant: NEC CORPORATION

Inventor： Masato SHINDO ,  Sadafuku HAYASHI

IPC: H04W72/00 ,  H04W76/40 ,  H04W4/06 ,  H04L12/18 ,  H04W88/12 ,  H04W92/20 ,  H04W28/16

CPC classification number: H04W72/005 ,  H04L12/189 ,  H04W4/06 ,  H04W28/16 ,  H04W76/40 ,  H04W88/12 ,  H04W92/20

Abstract: A mobile communication system according to the present invention is a mobile communication system including base stations each of which forms a cell and transmits MBMS data to a mobile station existing in the cell, and control stations each of which controls the base station connected thereto, wherein the control stations include at least a control station and a second control station that determines a frequency and timing for transmitting the MBMS data in the cell and instructs the first control station of the determined frequency and timing, and wherein each of the first and second control stations establishes time synchronization with another control station and instructs the connected base station to set the cell to the frequency determined by the second control station and transmits the MBMS data to the connected base station in accordance with the transmission timing determined by the second control station.

公开(公告)号：US20170070896A1

公开(公告)日：2017-03-09

申请号：US15122578

申请日：2014-10-07

Applicant: NEC Corporation

Inventor： Masato SHINDO

IPC: H04W24/02 ,  H04W36/14 ,  H04W36/18

Abstract: A control apparatus (1) is configured to automatically update a neighbour relation table (40, 131) of a source cell (10A). The control apparatus (1) is further configured to add, to the neighbour relation table (40, 131), a new entry (41) indicating a neighbour-cell relation from the source cell (10A) to another cell (10B) different from both the source cell (10A) and a target cell (10C) of a handover from the source cell (10A), in response to receiving a first message (S105) that is issued when a radio terminal (2) that has experienced a failure involving disconnection of a radio link connection in the source cell (10A) or in the target cell (10C) attempts to re-establish the radio link connection to the other cell (10B). This contributes to updating the neighbour-cell relations in response to detection of a handover failure.

Abstract translation: 控制装置（1）被配置为自动更新源单元（10A）的邻居关系表（40,41）。 控制装置（1）还被配置为向邻居关系表（40,131）添加指示从源小区（10A）到另一个小区（10B）的相邻小区关系的新条目（41） 响应于接收到经历故障的无线电终端（2）发出的第一消息（S105），来自源小区（10A）的切换的源小区（10A）和目标小区（10C） 涉及断开源单元（10A）或目标单元（10C）中的无线链路连接的尝试尝试重新建立到另一小区（10B）的无线链路连接。 这有助于响应于检测到切换失败来更新邻居小区关系。