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公开(公告)号：US10257875B2
公开(公告)日：2019-04-09
申请号：US15127150
申请日：2015-03-20
Applicant: KYOCERA CORPORATION
Inventor： Yushi Nagasaka , Noriyoshi Fukuta , Henry Chang
Abstract: A user terminal according to an embodiment comprises: a controller configured to control communication of a dual connectivity scheme in which a master base station and a secondary base station are used, the master base station establishing a RRC connection with the user terminal, and the secondary base station providing additional radio resources to the user terminal. The controller is configured to initiate a first random access procedure between the user terminal and the master base station and a second random access procedure between the user terminal and the secondary base station, respectively.
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公开(公告)号：US10251109B2
公开(公告)日：2019-04-02
申请号：US15650620
申请日：2017-07-14
Applicant: KYOCERA CORPORATION
Inventor： Henry Chang , Yushi Nagasaka , Kugo Morita , Fangwei Tong , Masato Fujishiro , Chiharu Yamazaki , Hiroyuki Adachi , Noriyoshi Fukuta
Abstract: A user terminal, user terminal chipset, and method including receiving, from a cellular base station included in a cellular radio access network (RAN), parameters for an offload from the cellular RAN to a wireless local area network (LAN), and performs an access network selection between the cellular RAN and the wireless LAN based on the parameters. Parameters include a first threshold to be compared with a cellular signal strength of the cellular RAN, a second threshold to be compared with a wireless LAN signal strength of the wireless LAN, and a third threshold to be compared with a load of the wireless LAN. Performing the access network selection includes selecting the wireless LAN to perform the offload, in response to the cellular signal strength being lower than the first threshold, the wireless LAN signal strength being higher than the second threshold, and the load being lower than the third threshold.
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公开(公告)号：US10104613B2
公开(公告)日：2018-10-16
申请号：US14470723
申请日：2014-08-27
Applicant: KYOCERA CORPORATION
Inventor： Noriyoshi Fukuta , Masato Fujishiro , Chiharu Yamazaki , Hiroyuki Adachi , Atsuhisa Inakoshi
Abstract: A mobile communication method, which configures a DRX cycle having an On duration in which a downlink signal transmitted from a serving base station is to be monitored and an Off duration other than the On duration in an RRC connected state where an RRC connection is established between a radio terminal and a radio base station, the mobile communication method comprising: a step A of transmitting, from the radio terminal to the radio base station, a timing adjustment request uplink signal through an uplink control channel, even when a radio resource of an uplink data channel has not been assigned in a case where the DRX cycle is configured; and a step B of transmitting, from the radio base station to the radio terminal, transmission timing correction information of an uplink signal, in response to the timing adjustment request uplink signal.
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公开(公告)号：US20180279153A1
公开(公告)日：2018-09-27
申请号：US15989620
申请日：2018-05-25
Applicant: KYOCERA CORPORATION
Inventor： Henry Chang , Noriyoshi Fukuta
Abstract: A communication control method used in a mobile communication system supporting immediate MDT (Minimization of Drive Test) includes a user terminal in a radio resource control (RRC) connected state in a cell of the base station receiving an instruction from a base station, acquiring, in the RRC connected state, location information indicating a location of the user terminal based on the instruction from the base station, and measuring an uplink packet delay of uplink communication with the base station. The radio access bearers of the user terminal are associated with Quality of Service (QoS) characteristics to perform QoS control. The user terminal in the RRC connected state compares the measured uplink packet delay with a packet delay threshold value and determines whether to transmit a report to the base station based on result of the comparison. The report indicates the measured uplink packet delay.
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公开(公告)号：US09961709B2
公开(公告)日：2018-05-01
申请号：US15211850
申请日：2016-07-15
Applicant: KYOCERA Corporation
Inventor： Henry Chang , Noriyoshi Fukuta
CPC classification number: H04W76/27 , H04L1/0026 , H04L41/069 , H04W24/02 , H04W24/04 , H04W72/0413 , H04W72/048 , H04W76/18
Abstract: A mobile communication method in which a radio terminal connects to a network so as to perform a communication, comprises: a step in which the radio terminal detects an occurrence of a connection failure with the network in a connected state; and a step of sending a radio link failure (RLF) report regarding the detected connection failure, from the radio terminal to the network. In the step of sending the RLF report, the radio terminal sends time information, which is contained in the RLF report, for identifying a time of occurrence of the connection failure, to the network.
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Patent Agency Ranking
公开(公告)号：US09877351B2
公开(公告)日：2018-01-23
申请号：US14761886
申请日：2014-01-17
Applicant: KYOCERA CORPORATION
Inventor： Noriyoshi Fukuta , Henry Chang , Amit Kalhan
IPC: H04W4/00 , H04W76/02 , H04L5/00 , H04W72/04 , H04W48/16 , H04W48/20 , H04W48/02 , H04W16/32 , H04W28/08 , H04W72/12
CPC classification number: H04W48/02 , H04L5/001 , H04L5/0032 , H04L5/0035 , H04W16/32 , H04W28/08 , H04W48/16 , H04W48/20 , H04W72/0426 , H04W72/048 , H04W72/12 , H04W76/15
Abstract: A mobile communication system supports a dual connectivity scheme. The dual connectivity scheme is a scheme in which a user terminal establishes a pair of connections with a pair of cells including a combination of cells managed by different base stations. The user terminal is permitted to apply the dual connectivity scheme only when the pair of cells is a combination of a large cell and a small cell provided within a coverage of the large cell.
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公开(公告)号：US09832712B2
公开(公告)日：2017-11-28
申请号：US15024256
申请日：2014-09-10
Applicant: KYOCERA CORPORATION
Inventor： Noriyoshi Fukuta , Fangwei Tong , Chiharu Yamazaki
CPC classification number: H04W48/16 , H04W4/02 , H04W4/70 , H04W8/005 , H04W48/20 , H04W76/14 , H04W92/18
Abstract: A user terminal according to the present invention is a user terminal in a mobile communication system that supports D2D communication that is direct device-to-device communication. The user terminal comprises: a receiver configured to receive, from a network device, D2D terminal information on another user terminal located around the user terminal, the network apparatus managing a location of the another user terminal that distributes information by the D2D communication; and a controller configured to perform control for discovering the another user terminal, on the basis of the D2D terminal information.
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公开(公告)号：US09749922B2
公开(公告)日：2017-08-29
申请号：US14761873
申请日：2014-01-17
Applicant: KYOCERA CORPORATION
Inventor： Henry Chang , Yushi Nagasaka , Kugo Morita , Fangwei Tong , Masato Fujishiro , Chiharu Yamazaki , Hiroyuki Adachi , Noriyoshi Fukuta
CPC classification number: H04W36/22 , H04W48/06 , H04W48/18 , Y02D70/126 , Y02D70/14
Abstract: A communication control method is a method for performing an offload from a cellular RAN to a wireless LAN. The communication control method includes the steps of: transmitting a list which contains identifiers of wireless LAN access points included in the wireless LAN, by a cellular base station included in the cellular RAN; receiving the list, by a user terminal which has a cellular communication unit and a wireless LAN communication unit; and performing an operation related to the offload after detecting that the user terminal approaches a wireless LAN access point on the basis of the list, by the user terminal which exists in a cell of the cellular base station.
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公开(公告)号：US09712982B2
公开(公告)日：2017-07-18
申请号：US15252649
申请日：2016-08-31
Applicant: KYOCERA CORPORATION
Inventor： Hiroyuki Urabayashi , Noriyoshi Fukuta
CPC classification number: H04W76/28 , H04W4/06 , H04W8/26 , H04W48/12 , H04W72/005 , H04W72/042 , H04W72/1289 , H04W76/40 , H04W88/02 , H04W88/12
Abstract: A user terminal according to one aspect executes a first and second DRX operations. The first DRX operation is an operation of discontinuously monitoring first control information, which is transmitted from the base station via PDCCH, using a C-RNTI that uniquely identifies the user terminal in a cell of the base station. The second DRX operation is an operation of discontinuously monitoring second control information, which is transmitted from the base station via the PDCCH, using a group RNTI assigned to a terminal group including the user terminal. The user terminal monitors the first control information in a first ON duration for the first DRX operation, and monitors the second control information in a second ON duration for the second DRX operation, the second ON duration being independent of the first ON duration.
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公开(公告)号：US09706464B2
公开(公告)日：2017-07-11
申请号：US14779747
申请日：2014-03-26
Applicant: KYOCERA CORPORATION
Inventor： Noriyoshi Fukuta , Kugo Morita , Henry Chang
CPC classification number: H04W36/16 , H04L12/189 , H04W4/06 , H04W48/18 , H04W52/0225 , H04W56/00 , H04W88/06 , Y02D70/1242 , Y02D70/1262 , Y02D70/142 , Y02D70/164
Abstract: A communication control method according to the present invention is a method for receiving an MBMS service. a communication control method comprises: a step A of transmitting to the first cell, by a UE 100 in a connected state in cell A belonging to PLMN 1, information for transitioning from the connected state to an idle state, when it is determined that an MBMS service in which UE 100 is interested is distributed through PLMN 2; and a step B of receiving, by UE 100 that has transitioned from connected state to idle state, MBMS service from cell B, after reselecting cell B belonging to PLMN 2.
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