公开(公告)号：US20190082349A1

公开(公告)日：2019-03-14

申请号：US16125914

申请日：2018-09-10

Applicant: NEC Corporation

Inventor： Yuhua CHEN ,  Sadafuku HAYASHI

IPC: H04W28/02 ,  H04L12/891 ,  H04W28/22 ,  H04W28/12 ,  H04W76/15 ,  H04W92/20 ,  H04W84/04 ,  H04W28/08

Abstract: A communication system is disclosed, in which a mobile telephone has a control-plane connection to a first base station and communicates user data using at least one communication bearer provided via a second base station. The base stations are configured to exchange information relating to the data rate required for the mobile telephone via the second base station. The first base station derives, based on the exchanged information, an aggregated maximum bit rate (AMBR) parameter specific to the second base station and provides the derived AMBR parameter to the second base station for use in data rate enforcement for the mobile telephone's communications via the second base station.

公开(公告)号：US20180352468A1

公开(公告)日：2018-12-06

申请号：US15781174

申请日：2016-12-15

Applicant: NEC Corporation

Inventor： Hisashi FUTAKI ,  Sadafuku HAYASHI

IPC: H04W28/02 ,  H04W48/12 ,  H04W12/04 ,  H04W76/27 ,  H04W80/02

Abstract: A radio station (2) transmits configuration information (501) to a radio terminal (1). The configuration information (501) indicates, on a cell-by-cell basis, at least one specific cell on which the radio terminal (1) is allowed to perform at least one of data transmission and data reception on a radio bearer used for uplink transmission or downlink transmission or both via a common Packet Data Convergence Protocol (PDCP) layer (402). As a result, in a radio architecture that provides tight interworking of two different Radio Access Technologies (RATs), it is for example possible to allow an eNB to indicate, to a radio terminal (UE), a specific cell on which the UE should perform uplink transmission.

公开(公告)号：US20180103449A1

公开(公告)日：2018-04-12

申请号：US15835134

申请日：2017-12-07

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).

公开(公告)号：US20180049076A1

公开(公告)日：2018-02-15

申请号：US15790313

申请日：2017-10-23

Applicant: NEC Corporation

Inventor： Sadafuku HAYASHI

IPC: H04W36/00 ,  H04L12/14 ,  H04M15/00 ,  H04W72/04 ,  H04W4/24 ,  H04W4/26 ,  H04W92/20 ,  H04W36/02 ,  H04W88/02 ,  H04W88/08

CPC classification number: H04W36/0072 ,  H04L12/14 ,  H04L12/1435 ,  H04M15/73 ,  H04M15/8038 ,  H04M2215/204 ,  H04M2215/7072 ,  H04M2215/7442 ,  H04W4/24 ,  H04W36/0055 ,  H04W36/02 ,  H04W72/042 ,  H04W88/02 ,  H04W88/08 ,  H04W92/20

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.

公开(公告)号：US20160330658A1

公开(公告)日：2016-11-10

申请号：US15108094

申请日：2014-10-27

Applicant: NEC CORPORATION

Inventor： Sadafuku HAYASHI ,  Takahiro SASAKI ,  Yoky YOSHIMURA

IPC: H04W36/00 ,  H04W4/22

CPC classification number: H04W36/0061 ,  H04W4/90 ,  H04W92/20

Abstract: A mobile communication system according to the present invention includes multiple base stations. The base station receives emergency support information indicating the supporting status of emergency call communication at neighboring base stations adjacent to the base station.

Abstract translation: 根据本发明的移动通信系统包括多个基站。 基站接收表示与基站相邻的邻近基站的紧急呼叫通信的支持状态的紧急支援信息。

公开(公告)号：US20250048143A1

公开(公告)日：2025-02-06

申请号：US18925287

申请日：2024-10-24

Applicant: NEC Corporation

Inventor： Hisashi FUTAKI ,  Sadafuku HAYASHI

IPC: H04W24/04 ,  H04W36/00 ,  H04W76/19

Abstract: A master node (MN) (1) controls the MN (1) to enable, for a radio terminal (3), dual connectivity using a Master Cell Group (MCG) provided by the MN (1) and a Secondary Cell Group (SCG) provided by a secondary node (SN) (2). The MN (1) sends an indication regarding an MCG failure to the SN (2). The MN (1) transmits an RRC message related to recovery of the MCG failure to the radio terminal (3), via an SCG part of a split signalling radio bearer between the MN (1) and the radio terminal (3). This, for example, allows the SN to learn of an occurrence of the MCG failure.

公开(公告)号：US20240349134A1

公开(公告)日：2024-10-17

申请号：US18755847

申请日：2024-06-27

Applicant: NEC Corporation

Inventor： Hisashi FUTAKI ,  Sadafuku HAYASHI

IPC: H04W36/00 ,  H04W36/08 ,  H04W36/36

CPC classification number: H04W36/0061 ,  H04W36/362 ,  H04W36/08

Abstract: During a mobility procedure for moving a radio terminal (3) from a source cell (11) to one of candidate target cells (21-23), a target RAN node (2) transmits to the radio terminal (3), via a source RAN node (1), a first configuration common to the candidate target cells and a plurality of second configurations each associated with a respective one of the candidate target cells. The first configuration includes at least one configuration parameter for enabling the radio terminal (3) to access to one of the candidate target cells or to communicate therein. Each second configuration includes at least one configuration parameter for enabling the radio terminal (3) to access to the corresponding candidate target cell or to communicate therein. This contributes to, for example, reducing signaling overhead of an inter-RAN node interface (and an air interface) during various mobility procedures including handovers.

公开(公告)号：US20240306086A1

公开(公告)日：2024-09-12

申请号：US18602108

申请日：2024-03-12

Applicant: NEC Corporation

Inventor： Sivapathalingham SIVAVAKEESAR ,  Sadafuku HAYASHI

IPC: H04W48/18 ,  H04W36/00 ,  H04W60/04

CPC classification number: H04W48/18 ,  H04W36/0069 ,  H04W36/00835 ,  H04W60/04

Abstract: A communication system is disclosed in which a number of procedures may be performed between user equipment, a base station, and/or the core network in the context of network slicing. The procedures support, for example efficient configuration of paging areas, roaming, access restriction, mobility, setting up of dual mode connectivity, connection re-establishment, efficient paging and slice selection.

公开(公告)号：US20240292282A1

公开(公告)日：2024-08-29

申请号：US18659073

申请日：2024-05-09

Applicant: NEC Corporation

Inventor： Hisashi FUTAKI ,  Sadafuku HAYASHI

IPC: H04W36/00 ,  H04W36/36 ,  H04W76/15

CPC classification number: H04W36/0027 ,  H04W36/36 ,  H04W76/15

Abstract: A secondary node (2) transmits to a radio terminal (3), via a master node (1), a first RRC message indicating an execution condition of a conditional primary cell change of a primary cell of a secondary cell group from a first cell to a second cell. In addition, the secondary node (2) receives, via the master node (1), a second RRC message that is transmitted from the radio terminal (3) in response to a satisfaction of the execution condition. This contributes to, for example, allowing the secondary node to be aware of a satisfaction of an execution condition of a conditional PSCell change where RRC signaling between the secondary node and the radio terminal is performed via the master node.

公开(公告)号：US20230254813A1

公开(公告)日：2023-08-10

申请号：US18137240

申请日：2023-04-20

Applicant: NEC Corporation

Inventor： Sivapathalingham SIVAVAKEESAR ,  Robert PATERSON ,  Toshiyuki TAMURA ,  Sadafuku HAYASHI

IPC: H04W68/00 ,  H04W76/19 ,  H04W76/27

CPC classification number: H04W68/005 ,  H04W76/19 ,  H04W76/27 ,  H04W36/0055

Abstract: A communication system is disclosed in which am anchor base station receives, from a core network node, downlink data for a communication device. The base station attempts (e.g. by RAN-based paging) to initiate communication with the communication device, and when the communication device does not respond to the attempt to initiate communication, the base station sends a message to the core network node, the message requesting initiation of a paging procedure for the communication device (e.g. S1-based paging).