公开(公告)号：US20180124772A1

公开(公告)日：2018-05-03

申请号：US15855717

申请日：2017-12-27

Applicant: NEC Corporation

Inventor： Hisashi FUTAKI

IPC: H04W72/04 ,  H04W4/00

Abstract: A Machine-to-machine (M2M) terminal (11) is configured to receive a first notification from a base station (13) and to transmit a second notification to the base station (13) when establishing a radio connection with the base station (13) after reception of the first notification or while performing a procedure for establishing a bearer between the M2M terminal (11) and a core network (14) after reception of the first notification. The first notification indicates whether specific coverage enhancement processing is supported in a cell (130) of the base station (13) in which the M2M terminal (11) is located. The second notification indicates that the specific coverage enhancement processing is required or being executed by the M2M terminal (11). It is thus possible to provide an improvement to allow the M2M terminal to determine necessity of special coverage enhancement processing for M2M terminals.

公开(公告)号：US20180007597A1

公开(公告)日：2018-01-04

申请号：US15704901

申请日：2017-09-14

Applicant: NEC Corporation

Inventor： Hisashi FUTAKI

IPC: H04W36/04 ,  H04W4/00 ,  H04W36/00 ,  H04W36/30

Abstract: A Machine-to-machine (M2M) terminal (11) comprises a radio communication unit (111) and a controller (112). The radio communication unit (111) is configured to communicate with a base station (13). The controller (112) is configured to change at least one of a cell selection operation, a cell reselection operation, and a handover operation according to whether a specific coverage enhancement processing is required or according to whether the specific coverage enhancement processing is supported by at least one of a cell (13) in which the M2M terminal (11) camps on and a neighbouring cell (14) of the cell (13) which the M2M terminal (11) camps on. It is thus possible to provide an improved technique for allowing the M2M terminal that is supporting a special coverage enhancement processing for M2M terminals to camp on an appropriate cell.

公开(公告)号：US20170265157A1

公开(公告)日：2017-09-14

申请号：US15609514

申请日：2017-05-31

Applicant: NEC Corporation

Inventor： Hisashi FUTAKI

IPC: H04W56/00 ,  H04L5/00 ,  H04W72/12 ,  H04J11/00

CPC classification number: H04W56/0005 ,  H04J11/0069 ,  H04L5/0032 ,  H04W56/0045 ,  H04W72/121

Abstract: A radio station, a radio terminal, and a method for synchronization timer control are provided that can reduce a delay as much as possible until uplink signal resynchronization is done in a case where a plurality of cell groups exist. In a radio communication system having a function of using a plurality of radio resources corresponding to a plurality of cells, respectively, for communication between a radio station (10) and a radio terminal (20), the radio terminal is provided with a plurality of synchronization timers for determining whether or not uplink signals in individual cell groups are in synchronization, wherein the synchronization timers are provided respectively for the plurality of cell groups each including at least one cell, and at the radio terminal (20), uplink-signal transmission on the cells included in a second cell group is controlled depending on a state of a first synchronization timer provided correspondingly for a first cell group including a specific cell and on a state of a second synchronization timer provided correspondingly for the second cell group other than the first cell group, wherein the first synchronization timer and the second synchronization timer are controlled independently.

公开(公告)号：US20170238193A1

公开(公告)日：2017-08-17

申请号：US15583701

申请日：2017-05-01

Applicant: NEC Corporation

Inventor： Hisashi FUTAKI

IPC: H04W16/26 ,  H04W8/22 ,  H04W68/00 ,  H04W4/00

CPC classification number: H04W16/26 ,  H04W4/70 ,  H04W8/22 ,  H04W24/04 ,  H04W68/005 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/0446 ,  H04W92/10

Abstract: A base station (13) is configured to receive, from a Machine-to-machine (M2M) terminal (11) or a core network (14), history information indicating whether or not specific coverage enhancement processing was executed in previous communication with the M2M terminal (11). Further, the base station (13) is configured to control communication using the specific coverage enhancement processing between the M2M terminal (11) and the base station (13) based on the history information received from the M2M terminal (11) or the core network (14). It is thus possible to contribute to improving efficiency of determination regarding whether to apply a special coverage enhancement processing to the M2M terminal.

公开(公告)号：US20170048912A1

公开(公告)日：2017-02-16

申请号：US15307467

申请日：2015-03-25

Applicant: NEC Corporation

Inventor： Vivek SHARMA ,  Robert ARNOTT ,  Hisashi FUTAKI ,  Yuhua CHEN

IPC: H04W76/02 ,  H04L12/26 ,  H04W72/08

CPC classification number: H04W76/15 ,  H04L43/00 ,  H04L43/0852 ,  H04W28/08 ,  H04W72/085 ,  H04W76/11 ,  H04W88/10

Abstract: A communication system is disclosed, in which a mobile communication device communicates user data using a communication bearer provided via a first base station and a second base station of the communication system. The base stations are configured to determine a packet delay for communicating user data using said communication bearer based on the time when the first base station started PDCP processing for a data packet communicated using said communication bearer, and based on the time when the data packet was acknowledged by said mobile communication device to the second base station.

Abstract translation: 公开了一种通信系统，其中移动通信设备使用通过通信系统的第一基站和第二基站提供的通信承载来传送用户数据。 基站被配置为基于第一基站开始对使用所述通信承载传送的数据分组进行PDCP处理的时间，并且基于数据分组的时间，确定用于使用所述通信承载传送用户数据的分组延迟 由所述移动通信设备向第二基站确认。

公开(公告)号：US20160234715A1

公开(公告)日：2016-08-11

申请号：US15023779

申请日：2014-08-27

Applicant: NEC CORPORATION

Inventor： Hisashi FUTAKI ,  Caroline JACTAT ,  Vivek SHARMA

IPC: H04W28/02 ,  H04W48/06

CPC classification number: H04W28/0289 ,  H04W28/0268 ,  H04W48/06

Abstract: The invention provides for a method of easing congestion in a mobile radio communications network including the step of applying access restriction at a mobile radio communications user terminal device towards the network and on the basis of bearer characteristics such as new or ongoing bearer, bearer quality of service, bearer type and or bearer class, and the access restrictions being controlled by the network e.g. the Radio Access Network such as via an eNodeB or the Core Network.

Abstract translation: 本发明提供了一种在移动无线电通信网络中缓解拥塞的方法，包括以下步骤：在移动无线电通信用户终端设备处向网络应用接入限制，并且基于诸如新的或正在进行的承载的承载特性，承载质量 服务，承载类型或承载类，以及由网络控制的访问限制，例如 无线电接入网络，例如经由eNodeB或核心网络。

公开(公告)号：US20150146701A1

公开(公告)日：2015-05-28

申请号：US14595300

申请日：2015-01-13

Applicant: NEC Corporation

Inventor： Hisashi FUTAKI

IPC: H04W56/00

CPC classification number: H04W56/0005 ,  H04J11/0069 ,  H04L5/0032 ,  H04W56/0045 ,  H04W72/121

Abstract: A radio station, a radio terminal, and a method for synchronization timer control are provided that can reduce a delay as much as possible until uplink signal resynchronization is done in a case where a plurality of cell groups exist. In a radio communication system having a function of using a plurality of radio resources corresponding to a plurality of cells, respectively, for communication between a radio station (10) and a radio terminal (20), the radio terminal is provided with a plurality of synchronization timers for determining whether or not uplink signals in individual cell groups are in synchronization, wherein the synchronization timers are provided respectively for the plurality of cell groups each including at least one cell, and at the radio terminal (20), uplink-signal transmission on the cells included in a second cell group is controlled depending on a state of a first synchronization timer provided correspondingly for a first cell group including a specific cell and on a state of a second synchronization timer provided correspondingly for the second cell group other than the first cell group, wherein the first synchronization timer and the second synchronization timer are controlled independently.

Abstract translation: 提供无线电台，无线电终端和用于同步定时器控制的方法，其可以在存在多个小区组的情况下尽可能地减少延迟直到上行链路信号重新同步。 在具有分别对应于多个小区使用多个无线电资源的功能的无线电通信系统中，用于无线电台（10）和无线电终端（20）之间的通信，所述无线电终端设置有多个 用于确定各个小区组中的上行链路信号是否同步的同步定时器，其中分别为包括至少一个小区的多个小区组提供同步定时器，并且在无线终端（20）处，上行链路信号传输 根据对于包括特定小区的第一小区组相应地提供的第一同步定时器的状态和针对第二小区组的第二小区组相应地提供的第二同步定时器的状态来控制包括在第二小区组中的小区的状态 第一单元组，其中第一同步定时器和第二同步定时器被独立地控制。

公开(公告)号：US20130229970A1

公开(公告)日：2013-09-05

申请号：US13857266

申请日：2013-04-05

Applicant: NEC CORPORATION

Inventor： Hisashi FUTAKI ,  Kojiro HAMABE ,  Jinsock LEE

IPC: H04W72/00

CPC classification number: H04W72/005 ,  H04L5/0032 ,  H04W28/26 ,  H04W48/08 ,  H04W52/327 ,  H04W72/042 ,  H04W72/0433

Abstract: Disclosed is a radio communication system in which transmission parameters, such as MCS of MBSFN, the number of subframes, and a transmission power of a reserved cell, are adaptively output, based on a unicast traffic volume in a MBSFN area, a number of terminals, and a number of cells of the MBSFN area, so that a system throughput in the MBSFN area is maximized while satisfying an MBSFN quality requirement condition.

Abstract translation: 公开了一种基于MBSFN区域中的单播业务量自适应地输出诸如MBSFN的MCS，子帧数和保留小区的发送功率的传输参数的无线通信系统，终端的数量 以及MBSFN区域的多个小区，使得MBSFN区域中的系统吞吐量在满足MBSFN质量要求条件的同时最大化。

公开(公告)号：US20250168888A1

公开(公告)日：2025-05-22

申请号：US18695088

申请日：2022-09-28

Applicant: NEC Corporation

Inventor： Hisashi FUTAKI ,  Sadatuku HAYASHI

IPC: H04W74/0833 ,  H04W48/16

Abstract: A radio terminal (1) performs a first random access using a random access resource associated with a feature combination. If the first random access fails, the radio terminal (1) falls back to a second random access using a random access resource associated with a feature subset included in the feature combination. This helps, for example, to provide a fallback in the event of a failed random access procedure using a random access resource associated with a feature combination.

公开(公告)号：US20240422583A1

公开(公告)日：2024-12-19

申请号：US18701710

申请日：2022-10-18

Applicant: NEC Corporation

Inventor： Hisashi FUTAKI

IPC: H04W24/02 ,  H04W36/08 ,  H04W72/231

Abstract: A radio terminal (1) receives, from a network, control information indicating whether or not the radio terminal (1) is allowed to perform a particular action based on an inference result of machine learning-based artificial intelligence. The radio terminal (1) makes a prediction or decision using a trained machine learning model. If the control information allows performing the particular action based on the inference result, the radio terminal (1) performs the particular action triggered by the prediction or decision. For example, this helps to enable a network (e.g., a radio access network (RAN) node) to control whether or not a radio terminal is allowed to perform an action based on a prediction or decision made by a trained machine-learning model.