-
公开(公告)号：US20230354159A1
公开(公告)日：2023-11-02
申请号：US18207550
申请日：2023-06-08
Applicant: NEC Corporation
Inventor： Hisashi FUTAKI , Sadafuku HAYASHI
Abstract: A base station (1) controls state transitions of a radio terminal (2) among first to third RRC states. In addition, the base station (1) explicitly or implicitly informs the radio terminal (2) about whether a network slice configured in the radio terminal (2) for data communication at least in the first RRC state is available in each cell included in a RAN notification area configured by a RAN (3). It is thus, for example, possible to allow a radio terminal in a first state (e.g., RRC_INACTIVE state) to be easily aware of the availability of network slices in a cell to be reselected or a reselected cell.
-
公开(公告)号：US20230254901A1
公开(公告)日：2023-08-10
申请号：US18011670
申请日：2021-11-09
Applicant: NEC Corporation
Inventor： Hisashi FUTAKI , Sadafuku HAYASHI
CPC classification number: H04W74/0833 , H04L5/0096 , H04L5/0035
Abstract: When a Secondary Cell Group (SCG) containing a Primary SCG Cell (PSCell) is deactivated upon a PSCell addition or a PSCell mobility, a User Equipment (3) performs random access to the PSCell in response to the PSCell addition or the PSCell mobility without waiting until a future SCG activation. This can contribute, for example, to proper random access when the SCG is deactivated.
-
公开(公告)号：US20220279594A1
公开(公告)日：2022-09-01
申请号：US17625860
申请日：2021-03-04
Applicant: NEC Corporation
Inventor： Yuhua CHEN , Hisashi FUTAKI
Abstract: A system is disclosed in which a user equipment (UE) performs small data transmissions in Radio Resource Control (RRC) Inactive state. The UE receives information configuring small data transmissions via a control-plane, and when there is uplink data to be sent as a small data transmission, the UE generates and transmits an RRC message comprising said small data transmission using a Signalling Radio Bearer (SRB) provided via a Common Control Channel (CCCH).
-
公开(公告)号：US20220279414A1
公开(公告)日：2022-09-01
申请号：US17630186
申请日：2020-08-20
Applicant: NEC Corporation
Inventor： Toshiyuki TAMURA , Hisashi FUTAKI
Abstract: In order to further facilitate continuous communication with a flying mobile terminal, a control apparatus according to an example aspect of the present disclosure includes a communication processing section configured to transmit a first request message requesting allocation of a radio resource for a mobile terminal configured to move according to flight path information to a core network connected to a radio station configured to allocate the radio resource.
-
公开(公告)号：US20220256637A1
公开(公告)日：2022-08-11
申请号：US17630003
申请日：2020-06-17
Applicant: NEC Corporation
Inventor： Hisashi FUTAKI , Sadafuku HAYASHI
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 to the SN (2) a first message related to a modification or release of a configuration or resource in the SN (2) regarding the dual connectivity. The first message explicitly or implicitly indicates that the modification or release is related to a failure of the MCG or recovery from the failure of the MCG. This, for example, allows the SN to distinguish a message regarding modification or release of an SN configuration (or resource) sent from an MN to the SN for recovery from an MCG failure from other messages.
-
Patent Agency Ranking
公开(公告)号：US20220141717A1
公开(公告)日：2022-05-05
申请号：US17578664
申请日：2022-01-19
Applicant: NEC Corporation
Inventor： Hisashi FUTAKI , Hiroaki Aminaka
Abstract: A radio network (6) and a radio terminal (4) are configured to, when the radio terminal (4) is using a first cell (10) served by a first radio station (1) as a primary cell and a second cell (20) served by a second radio station (2) as a secondary cell, change the primary cell from the first cell (10) to a third cell (30) served by a third radio station (3) while keeping communication status information regarding the radio terminal (1) on the second cell (20). It is thus, for example, possible to enable a communication service in the secondary cell to be continued even after the primary cell is changed when the primary cell is changed during execution of carrier aggregation (e.g., Inter-eNB CA) on a plurality of cells served by different radio stations.
-
公开(公告)号：US20210410021A1
公开(公告)日：2021-12-30
申请号：US17288200
申请日：2019-08-23
Applicant: NEC Corporation
Inventor： Hisashi FUTAKI , Sadafuku HAYASHI
Abstract: A central unit (1) of a base station sends, to a distributed unit (2) of the base station, a message requesting addition of a secondary cell for carrier aggregation. The message contains a first information element indicating that the secondary cell needs to be initially activated or dormant. It is thus, for example, possible to contribute to improvement for enabling direct configuration of a secondary cell state in an architecture where a base station divides into a central unit and a distributed unit.
-
公开(公告)号：US20210392651A1
公开(公告)日：2021-12-16
申请号：US17287003
申请日：2019-08-20
Applicant: NEC Corporation
Inventor： Hisashi FUTAKI , Sadafuku HAYASHI
Abstract: When a secondary cell of carrier aggregation has been activated, a radio terminal (2) communicates with a radio access network (RAN) node (1) in an active downlink (DL) bandwidth part (BWP) selected from among a plurality of DL BWPs for the secondary cell. In addition, when the secondary cell is in a dormant state, the radio terminal (2) transmits to the RAN node (1), via a primary cell or another activated serving cell of the carrier aggregation, a channel state information report for a target DL BWP selected from among the plurality of DL BWPs. It is thus, for example, possible to allow the radio terminal to perform channel a state information measurement on a dormant SCell that has been configured with a plurality of BWPs.
-
公开(公告)号：US20210385711A1
公开(公告)日：2021-12-09
申请号：US17283046
申请日：2019-08-30
Applicant: NEC Corporation
Inventor： Tomu TAMURA , Hisashi FUTAKI
Abstract: In order to prevent deterioration of QoE of a user in intersystem handover, an apparatus according to the present invention includes: an information obtaining unit configured to obtain network slice related information related to a network slice used by a terminal apparatus in a first radio communication system; and a first communication processing unit configured to transmit, to a second network node of a second radio communication system, a message for intersystem handover of the terminal apparatus from the first radio communication system to the second radio communication system, the message including the network slice related information.
-
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
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.
-
-
-
-
-
-
-
-
-
Search Results
249
records
(took 0.021 seconds)
