公开(公告)号：US20240334327A1

公开(公告)日：2024-10-03

申请号：US18738185

申请日：2024-06-10

Applicant: NEC Corporation

Inventor： Hisashi FUTAKI ,  Hiroaki AMINAKA

IPC: H04W52/02 ,  H04L1/00 ,  H04L5/00 ,  H04W48/00 ,  H04W48/12 ,  H04W72/23 ,  H04W76/28

CPC classification number: H04W52/0216 ,  H04L1/0045 ,  H04L5/001 ,  H04L5/0035 ,  H04L5/0098 ,  H04W48/00 ,  H04W48/12 ,  H04W52/0229 ,  H04W72/23 ,  H04W76/28 ,  Y02D30/70

Abstract: A radio terminal (3) can perform carrier aggregation using a first cell (10) of a first radio station (1) and a second cell (20) of a second radio station (2). The first radio station (1) or the second radio station (2) transmits constraint information to the radio terminal (3). The constraint information contains an information element necessary to specify a reception constraint and/or transmission constraint related to the first cell (10) and/or the second cell (20) when the carrier aggregation is performed. The reception/transmission constraint is a constraint related to downlink signal reception/uplink signal transmission by the radio terminal over one or more subframe periods of the primary cell (10) and the secondary cell (20). It is thus, for example, possible to contribute to reduction in wasteful power consumption in the radio terminal in the carrier aggregation of a plurality of cells served by different radio stations.

公开(公告)号：US20230090571A1

公开(公告)日：2023-03-23

申请号：US17911477

申请日：2021-02-16

Applicant: NEC Corporation

Inventor： Yuya WADA ,  Hiroaki AMINAKA

IPC: H04W24/08 ,  H04B17/345

Abstract: In order to enable a precedent base station to perform appropriate processing on interference by a subsequent base station in a mobile communication system, a base station 201 includes an interference source specifying unit 360 configured to obtain information related to a received signal received by the base station 201 from each of a plurality of directions and to specify, based on the information related to the received signal, a direction from the base station 201 to a transmission source which has caused interference affecting the base station 201.

公开(公告)号：US20220159441A1

公开(公告)日：2022-05-19

申请号：US17439479

申请日：2019-12-06

Applicant: NEC Corporation

Inventor： Hiroaki AMINAKA

IPC: H04W4/90 ,  H04W28/24 ,  H04W4/10 ,  H04L65/10

Abstract: At least one server (11) communicates with one or more applications running on each of wireless terminals (2) through one or more communication paths provided by a cellular communication network (3). The at least one server (11) determines a QoS parameter to be applied by the cellular communication network (3) to each communication path, based on one or any combination of a priority associated with each application, a priority associated with each wireless terminal (2), and a priority associated with an organization to which the wireless terminals (2) belong. The at least one server (11) communicates with a node in the cellular communication network (3) to enforce the determined QoS parameter on the corresponding communication path. This, for example, allows priority handling regarding a public safety service to be reflected in a QoS parameter of a cellular communication network.

公开(公告)号：US20210282023A1

公开(公告)日：2021-09-09

申请号：US17324431

申请日：2021-05-19

Applicant: NEC Corporation

Inventor： Hiroaki AMINAKA ,  Hisashi FUTAKI

IPC: H04W16/14 ,  H04W76/12 ,  H04W76/15 ,  H04W72/04

Abstract: A first base station (1) is configured to establish a first signaling bearer with a mobility management apparatus (5), establish a second signaling bearer with a second base station (2), and to establish a signaling radio bearer with a mobile station (3) in a first cell (10). The second base station (2) is configured to establish the second signaling bearer with the first base station (1), establish a data bearer with a data transfer apparatus (6), and to establish a data radio bearer with the mobile station (3) in a second cell (20). Furthermore, the first base station (1) is configured to transmit, to the second base station (2) through the second signaling bearer configuration information, necessary to establish the data bearer and the data radio bearer in the second base station (2). Thus, for example, bearer architecture suitable for a C/U plane split scenario is provided.

公开(公告)号：US20200351684A1

公开(公告)日：2020-11-05

申请号：US16932126

申请日：2020-07-17

Applicant: NEC Corporation

Inventor： Hisashi FUTAKI ,  Hiroaki AMINAKA ,  Hiroto SUGAHARA ,  Yoshikazu KAKURA ,  Kazushi MURAOKA

IPC: H04W24/08 ,  H04W76/27 ,  H04B17/309 ,  H04B17/24 ,  H04B17/318 ,  H04B17/382 ,  H04W24/10 ,  H04W16/14 ,  H04W88/02 ,  H04W72/04 ,  H04W88/10 ,  H04L5/00 ,  H04W72/08

Abstract: A radio terminal (2) is used in a radio communication system (100) and communicates with a radio station (1). The radio terminal (2) includes a measurement unit (20). The measurement unit (20) operates to perform, using a terminal measurement procedure for executing a first terminal measurement corresponding to radio access technology applied to the radio communication system (100), a second terminal measurement of a shared frequency shared by a plurality of radio systems including the radio communication system (100).

公开(公告)号：US20200296786A1

公开(公告)日：2020-09-17

申请号：US16845222

申请日：2020-04-10

Applicant: NEC Corporation

Inventor： Hisashi FUTAKI ,  Hiroaki AMINAKA

IPC: H04W76/15 ,  H04B7/024 ,  H04L5/00 ,  H04W72/04

Abstract: A first radio station (1) requests or instructs a second radio station (2) to prepare for communication with a radio terminal (3) on a second cell (20) while a first radio connection on a first cell (10) with the radio terminal (3) is established. Further, the first radio station (1) instructs the radio terminal (3) or the second radio station (2) to establish a second radio connection on the second cell (20) with the radio terminal (3) while maintaining the radio connection on the first cell (10) with the radio terminal (3). It is thus for example possible to enable a single radio terminal to establish radio connections with cells of a plurality of radio stations, in order to achieve carrier aggregation of cells operated by different radio stations.

公开(公告)号：US20200169893A1

公开(公告)日：2020-05-28

申请号：US16776844

申请日：2020-01-30

Applicant: NEC Corporation

Inventor： Hiroaki AMINAKA ,  Hisashi FUTAKI

IPC: H04W16/14 ,  H04W72/04 ,  H04W76/15 ,  H04W76/12

Abstract: A first base station (1) is configured to establish a first signaling bearer with a mobility management apparatus (5), establish a second signaling bearer with a second base station (2), and to establish a signaling radio bearer with a mobile station (3) in a first cell (10). The second base station (2) is configured to establish the second signaling bearer with the first base station (1), establish a data bearer with a data transfer apparatus (6), and to establish a data radio bearer with the mobile station (3) in a second cell (20). Furthermore, the first base station (1) is configured to transmit, to the second base station (2) through the second signaling bearer configuration information, necessary to establish the data bearer and the data radio bearer in the second base station (2). Thus, for example, bearer architecture suitable for a C/U plane split scenario is provided.

公开(公告)号：US20190387563A1

公开(公告)日：2019-12-19

申请号：US16506268

申请日：2019-07-09

Applicant: NEC Corporation

Inventor： Hisashi FUTAKI ,  Hiroaki AMINAKA

IPC: H04W76/15 ,  H04B7/024 ,  H04L5/00 ,  H04W72/04

Abstract: A first radio station (1) requests or instructs a second radio station (2) to prepare for communication with a radio terminal (3) on a second cell (20) while a first radio connection on a first cell (10) with the radio terminal (3) is established. Further, the first radio station (1) instructs the radio terminal (3) or the second radio station (2) to establish a second radio connection on the second cell (20) with the radio terminal (3) while maintaining the radio connection on the first cell (10) with the radio terminal (3). It is thus for example possible to enable a single radio terminal to establish radio connections with cells of a plurality of radio stations, in order to achieve carrier aggregation of cells operated by different radio stations.

公开(公告)号：US20190223231A1

公开(公告)日：2019-07-18

申请号：US16329809

申请日：2017-04-19

Applicant: NEC Corporation

Inventor： Kazushi MURAOKA ,  Hiroaki AMINAKA

IPC: H04W76/11 ,  H04W8/00 ,  H04W4/70 ,  H04W76/27 ,  H04W88/04 ,  H04W88/02 ,  H04W88/08

CPC classification number: H04W76/11 ,  H04W4/70 ,  H04W8/00 ,  H04W8/005 ,  H04W72/10 ,  H04W76/27 ,  H04W88/023 ,  H04W88/04 ,  H04W88/085 ,  H04W92/18

Abstract: A base station (2) is configured to receive, from a first wireless terminal (1), a first group identifier indicating a first terminal group, and allocate, to the first wireless terminal (1), a second radio resource, rather than a first radio resource, for device-to-device (D2D) communication performed by the first wireless terminal (1). The first radio resource is a radio resource which has already been allocated to any other wireless terminal which has sent the first group identifier. Meanwhile, the second radio resource is a radio resource which has already been allocated to any other wireless terminal which has sent a second group identifier indicating a second terminal group different from the first terminal group. It is thus, for example, possible to preventing a plurality of D2D communication signals, which are transmitted from multiple wireless terminals to a single wireless terminal, from being transmitted on the same radio resource.

公开(公告)号：US20190159050A1

公开(公告)日：2019-05-23

申请号：US16255408

申请日：2019-01-23

Applicant: NEC Corporation

Inventor： Hisashi FUTAKI ,  Hiroaki AMINAKA ,  Hiroto SUGAHARA ,  Yoshikazu KAKURA ,  Kazushi MURAOKA

IPC: H04W24/08 ,  H04W88/10 ,  H04L5/00 ,  H04W72/08 ,  H04B17/309 ,  H04B17/24 ,  H04W24/10 ,  H04W76/27 ,  H04W16/14 ,  H04W88/02 ,  H04W72/04 ,  H04B17/382 ,  H04B17/318

Abstract: A radio terminal (2) is used in a radio communication system (100) and communicates with a radio station (1). The radio terminal (2) includes a measurement unit (20). The measurement unit (20) operates to perform, using a terminal measurement procedure for executing a first terminal measurement corresponding to radio access technology applied to the radio communication system (100), a second terminal measurement of a shared frequency shared by a plurality of radio systems including the radio communication system (100).