公开(公告)号：US20180270810A1

公开(公告)日：2018-09-20

申请号：US15552787

申请日：2017-05-30

Applicant: SoftBank Corp.

Inventor： Jumpei TAKAGI ,  Masahiko NANRI ,  Takayuki YOSHIMURA ,  Masanori NOMACHI ,  Takanori TAKII

IPC: H04W72/04 ,  H04W16/32 ,  H04W40/22

CPC classification number: H04W72/0433 ,  H04B7/15528 ,  H04W16/26 ,  H04W16/32 ,  H04W40/22 ,  H04W84/045 ,  H04W92/045 ,  H04W92/12

Abstract: A relay apparatus is a relay apparatus that relays communication between a terminal device and macro cell base station in order to implement a relay apparatus capable of preventing a disconnection between the macro cell base station and the relay apparatus, wherein when starting a new connection for radio communication, the relay apparatus acquires identification information for identifying the other end of the radio communication, checks connectability information for defining whether connection to the other end of the radio communication can be established or not against the identification information, and determines whether the connection for the radio communication can be established or not.

公开(公告)号：US20190090157A1

公开(公告)日：2019-03-21

申请号：US15511148

申请日：2017-01-25

Applicant: SoftBank Corp.

Inventor： Takayuki YOSHIMURA ,  Masahiko NANRI ,  Masanori NOMACHI ,  Takanori TAKII ,  Jumpei TAKAGI

IPC: H04W28/08 ,  H04W28/18 ,  H04W28/02 ,  H04W16/26 ,  H04W72/08 ,  H04W48/06

Abstract: Communication quality of a terminal device which directly connects to a macro cell base station is guaranteed and communication quality of a terminal device which connects to the macro cell base station via a relay apparatus is guaranteed. A communication control system includes: an acquisition unit that acquires communication status information including a past communication traffic volume between the macro cell base station and a relay apparatus 20; a setting unit that presets a first permitted communication traffic volume for a first communication period during which a communication traffic volume between the macro cell base station and the relay apparatus 20 is equal to or more than a specified communication traffic volume, and a second permitted communication traffic volume for a second communication period during which the communication traffic volume is less than the specified communication traffic volume, on the basis of the communication status information; a measurement unit that measures a current communication traffic volume between the macro cell base station and the relay apparatus 20; and a control unit that controls the second permitted communication traffic volume on the basis of the measured current communication traffic volume.

公开(公告)号：US20190089449A1

公开(公告)日：2019-03-21

申请号：US15506720

申请日：2016-12-14

Applicant: SoftBank Corp.

Inventor： Takayuki YOSHIMURA ,  Masahiko NANRI ,  Masanori NOMACHI ,  Takanori TAKII ,  Jumpei TAKAGI

IPC: H04B7/10 ,  H04B17/40

Abstract: Beamforming for radio communication (uplink) from a relay apparatus to a donor base station is performed accurately. A relay apparatus 20 is a relay apparatus 20 for relaying communication between a terminal device 10 and a donor base station 30 and includes: an amplitude and phase measurement unit 25 that measures an amplitude and phase of radio communication from the donor base station 30 to the relay apparatus 20; and a beam adjuster 27 that performs beamforming with respect to the donor base station 30 by adjusting amplitudes and phases from a plurality of antennas used at the relay apparatus 20 by measuring the amplitude and the phase by using the amplitude and phase measurement unit 25, wherein during a time slot when the terminal device 10 does not exist in a service area of the relay apparatus 20, the relay apparatus 20 detects no existence of the terminal device 10 in the service area and stops access radio, the amplitude and phase measurement unit 25 measures the amplitude and the phase, and the beam adjuster 27 performs the beamforming with respect to the donor base station 30, after which the access radio is restarted.

公开(公告)号：US20180316411A1

公开(公告)日：2018-11-01

申请号：US15506722

申请日：2016-12-14

Applicant: SoftBank Corp.

Inventor： Takayuki YOSHIMURA ,  Masahiko NANRI ,  Masanori NOMACHI ,  Takanori TAKII ,  Jumpei TAKAGI

IPC: H04B7/155

CPC classification number: H04B7/10 ,  H04B7/15 ,  H04B17/40 ,  H04W16/26 ,  H04W16/28

Abstract: A relay apparatus is provided which is capable of properly executing beamforming for radio communication from the relay apparatus to a donor base station, while inhibiting occurrence of beam interference in its surrounding area as much as possible. A relay apparatus 20 includes: an amplitude and phase measurement unit 25 that measures an amplitude and phase of radio communication from a donor base station 30 to the relay apparatus 20; a beam adjuster 27 that performs beamforming by adjusting a combination of a plurality of antennas; and a base station judgment unit 29 that judges base stations; wherein the adjustment for the beamforming is made so that a relatively strong beam is directed towards the donor base station 30 and a relatively weak beam is directed towards base stations other than the donor base station 30.

公开(公告)号：US20180279205A1

公开(公告)日：2018-09-27

申请号：US15558485

申请日：2017-05-31

Applicant: SoftBank Corp.

Inventor： Masahiko NANRI ,  Takayuki YOSHIMURA ,  Masanori NOMACHI ,  Takanori TAKII ,  Jumpei TAKAGI

IPC: H04W48/06 ,  H04W48/10 ,  H04W24/04

CPC classification number: H04W48/06 ,  H04W16/26 ,  H04W24/04 ,  H04W40/24 ,  H04W48/02 ,  H04W48/08 ,  H04W48/10 ,  H04W48/12 ,  H04W48/16 ,  H04W84/047 ,  H04W88/08

Abstract: The fairness of radio communication between a donor base station and terminal devices is maintained. A relay apparatus 20 for relaying radio communication between one or more terminal devices 10 and a donor base station 30, wherein when the relay apparatus 20 receives a cell restriction instruction from the donor base station 30 to restrict a quantity of terminals capable of existing in a service area of a cell formed by the donor base station 30, the relay apparatus 20 executes processing for avoiding cell restriction operation on itself and transfers the cell restriction instruction received from the donor base station 30 to the terminal devices 10 existing in a service area of a cell formed by the relay apparatus itself.

公开(公告)号：US20180279196A1

公开(公告)日：2018-09-27

申请号：US15552790

申请日：2017-05-30

Applicant: SoftBank Corp.

Inventor： Jumpei TAKAGI ,  Masahiko NANRI ,  Takayuki YOSHIMURA ,  Masanori NOMACHI ,  Takanori TAKII

IPC: H04W36/38

CPC classification number: H04W36/38 ,  H04W36/08 ,  H04W84/045 ,  H04W84/047 ,  H04W88/085

Abstract: In order to implement a relay apparatus capable of suppressing frequency of handover which may occur between macro cell base stations, a relay apparatus 20 relays communication between a terminal device 10 and a macro cell base station 30 and establishes a connection to a specified macro cell base station 30 on the basis of connection point identification information for identifying the macro cell base station 30 which is a connection point; and even when the relay apparatus 20 receives a connection switching request form a core network side to switch the connection from a macro cell base station 30-1 to another macro cell base station 30-2, the relay apparatus 20 prohibits switching of the connection to the other macro cell base station 30-2 pursuant to the connection switching request.