公开(公告)号：US20220182885A1

公开(公告)日：2022-06-09

申请号：US17670256

申请日：2022-02-11

Applicant: NEC Corporation

Inventor： Hisashi FUTAKI ,  Sadafuku HAYASHI

IPC: H04W28/20 ,  H04W76/27 ,  H04W76/10 ,  H04W72/04 ,  H04W80/02

Abstract: A radio access network (RAN) node (11) is configured to send, to another RAN node (12), first control information regarding at least one of one or more bandwidth parts (BWPs) configured in a system bandwidth. It is thus, for example, possible to contribute to inter-radio access network (RAN) node (e.g., inter-gNB) signaling enhanced to handle bandwidth parts.

公开(公告)号：US20220104087A1

公开(公告)日：2022-03-31

申请号：US17420980

申请日：2019-10-31

Applicant: NEC Corporation

Inventor： Hisashi FUTAKI ,  Sadafuku HAYASHI

IPC: H04W36/08 ,  H04W36/26

Abstract: A Distributed Unit (DU) (2) of a base station sends a first message to a Central Unit (1) of the base station in response to detecting initiation of a conditional mobility of a radio terminal (3) from a first cell served by the DU (2) to a second cell. It is thus for example possible to allow a Central Unit (CU) to be aware of satisfaction of an execution condition of a conditional mobility (or initiation of the conditional mobility).

公开(公告)号：US20220007375A1

公开(公告)日：2022-01-06

申请号：US17360266

申请日：2021-06-28

Applicant: NEC Corporation

Inventor： Sadafuku HAYASHI

IPC: H04W72/08 ,  H04W16/32 ,  H04W72/04 ,  H04W28/04 ,  H04W92/20

Abstract: A wireless communication system of the present invention includes a first base station (30) and a second base station (20) configured to be capable of transmitting downlink data received from a core network to a terminal via the second base station (20) and the first base station (30). The second base station (20) transmits, to the first base station (30), information for identifying downlink data to be discarded from among the downlink data transmitted to the first base station (30) and a command for discarding the downlink data identified by the information. The first base station (30) discards downlink data not transmitted to the terminal from among the downlink data identified by the information.

公开(公告)号：US20210289394A1

公开(公告)日：2021-09-16

申请号：US16488345

申请日：2018-01-31

Applicant: NEC CORPORATION

Inventor： Daisuke OGURA ,  Sadafuku HAYASHI

IPC: H04W28/06 ,  H04W76/11 ,  H04W80/06 ,  H04L29/06

Abstract: In order to enable, even when there exist a plurality of apparatuses configured to perform processing of an upper layer of the transport layer for one apparatus configured to perform processing of the transport layer or a lower layer, reliable communication with each of the apparatuses configured to perform the processing of the upper layer, via the transport layer, an apparatus includes a generating section 141 configured to generate a transport layer packet including identification information in a packet region different from a service data unit, the identification information being used in an upper layer of a transport layer, and a transmission processing section 143 configured to transmit the transport layer packet.

公开(公告)号：US20210105107A1

公开(公告)日：2021-04-08

申请号：US17044389

申请日：2019-04-03

Applicant: NEC CORPORATION

Inventor： Chadi KHIRALLAH ,  Yassin Aden AWAD ,  Sadafuku HAYASHI ,  Tao GUO ,  Robert HRNOTT

IPC: H04L5/00

Abstract: A communication system is disclosed in which an NR radio access network (RAN) node identifies resources, that the NR RAN node is to use for transmissions, for protection from interference from another RAN node. The NR RAN node sends, to the other RAN node, information indicating the identified resources for protection from interference. The information indicating the identified resources comprises a list of parameters, typically including resource bitmaps, based on which the other RAN node is able to determine the resources for protection from interference.

公开(公告)号：US20210084515A1

公开(公告)日：2021-03-18

申请号：US16968309

申请日：2019-01-28

Applicant: NEC CORPORATION

Inventor： Toshihiro YOKOYAMA ,  Sadafuku HAYASHI

IPC: H04W24/10 ,  H04W76/15 ,  H04W24/08

Abstract: In order to enable reporting of data volume from a secondary node (SN) to a master node (MN) in dual connectivity, a communication apparatus according to the present invention includes: an information obtaining unit configured to obtain data volume information indicating volume of data transmitted between a first base station and a terminal apparatus, the first base station operating for the terminal apparatus as a secondary node of dual connectivity using at least New Radio (NR); and a communication processing unit configured to transmit the data volume information to a second base station operating for the terminal apparatus as a master node of the dual connectivity. The volume of the data is data volume counted in a Packet Data Convergence Protocol (PDCP) layer or between the PDCP layer and a Radio Link Control (RLC) layer.

公开(公告)号：US20200170021A1

公开(公告)日：2020-05-28

申请号：US16721286

申请日：2019-12-19

Applicant: NEC Corporation

Inventor： Sadafuku HAYASHI

IPC: H04W72/08 ,  H04W72/04 ,  H04W16/32 ,  H04W92/20 ,  H04W28/04

Abstract: A wireless communication system of the present invention includes a first base station (30) and a second base station (20) configured to be capable of transmitting downlink data received from a core network to a terminal via the second base station (20) and the first base station (30). The second base station (20) transmits, to the first base station (30), information for identifying downlink data to be discarded from among the downlink data transmitted to the first base station (30) and a command for discarding the downlink data identified by the information. The first base station (30) discards downlink data not transmitted to the terminal from among the downlink data identified by the information.

公开(公告)号：US20200037208A1

公开(公告)日：2020-01-30

申请号：US16594570

申请日：2019-10-07

Applicant: NEC Corporation

Inventor： Hisashi FUTAKI ,  Sadafuku HAYASHI

IPC: H04W36/00 ,  H04W72/04 ,  H04W16/32 ,  H04W36/08 ,  H04W92/20 ,  H04W88/10

Abstract: A secondary base station (2) is configured to receive an SeNB addition request message from a second master base station (3) while providing a radio terminal (1) with a secondary cell group (SCG) for DC in cooperation with a first master base station. The SeNB addition request message indicates whether each of at least one bearer that has already been configured in the secondary base station (2) for DC with the first master base station (1) is to be kept at the secondary base station (2). It is thus, for example, possible to contribute to performing a procedure for changing a master base station in Dual Connectivity (DC) by using existing inter-base station interface procedures and inter-base station signaling messages.

公开(公告)号：US20190028860A1

公开(公告)日：2019-01-24

申请号：US16069777

申请日：2016-12-15

Applicant: NEC CORPORATION

Inventor： Hisashi FUTAKI ,  Sadafuku HAYASHI

IPC: H04W4/14 ,  H04W76/27

Abstract: A radio terminal (1) is configured to transmit data using a first communication architecture type, in response to an occurrence of a request for specific data transmission when the radio terminal (1) has already been configured by a network (3) to use a second communication architecture type. This contributes to, for example, when the radio terminal has already been configured by the network to use the second communication architecture type that involves suspension and resumption of an RRC connection, facilitating effectively performing communication according to the first communication architecture type that involves data transmission over a control plane.

公开(公告)号：US20180213450A1

公开(公告)日：2018-07-26

申请号：US15747013

申请日：2016-06-21

Applicant: NEC Corporation

Inventor： Hisashi FUTAKI ,  Sadafuku HAYASHI

IPC: H04W36/00 ,  H04W36/08 ,  H04W88/10

CPC classification number: H04W36/0027 ,  H04W16/32 ,  H04W36/0033 ,  H04W36/08 ,  H04W72/04 ,  H04W88/06 ,  H04W88/10 ,  H04W92/20

Abstract: A secondary base station (2) is configured to receive an SeNB addition request message from a second master base station (3) while providing a radio terminal (1) with a secondary cell group (SCG) for DC in cooperation with a first master base station. The SeNB addition request message indicates whether each of at least one bearer that has already been configured in the secondary base station (2) for DC with the first master base station (1) is to be kept at the secondary base station (2). It is thus, for example, possible to contribute to performing a procedure for changing a master base station in Dual Connectivity (DC) by using existing inter-base station interface procedures and inter-base station signaling messages.