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公开(公告)号：US11438945B2
公开(公告)日：2022-09-06
申请号：US16943590
申请日：2020-07-30
发明人： Hidekazu Tsuboi , Katsunari Uemura , Shohei Yamada
摘要： A terminal device, a base station device, a communication system, a measurement method, and an integrated circuit, which are capable of efficiently performing Sidelink Direct Discovery, are provided. In the terminal device, a reception unit is configured to receive an RRC connection reconfiguration message including a first configuration related to Sidelink Direct Discovery, and in a case where the first configuration includes frequency information, to attempt to acquire configuration information about monitoring of a Sidelink Direct Discovery announcement at a frequency indicated by the frequency information, using a timer configured to count a predetermined time and while the timer is counting, by acquiring system information to be broadcast at the frequency.
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公开(公告)号：US11115847B2
公开(公告)日：2021-09-07
申请号：US15541553
申请日：2015-12-28
IPC分类号： H04W24/10 , H04W24/08 , H04W88/02 , H04L5/00 , H04L12/26 , H04W72/08 , H04W76/27 , H04W72/04 , H04W88/08
摘要： A terminal device includes a transmission processing part configured to notify the network of a type of the terminal device, and a reception processing part configured to derive the required number of repetitive transmissions and/or repetitive receptions (the first number of repetitions) on the basis of downlink reference signal received power. The terminal device measures the downlink reference signal received power on the basis of the first measurement period longer than 200 ms, upon deriving the first number of repetitions. The type of the terminal device notified to the network is different from a type of a terminal device employing a measurement period of 200 ms.
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公开(公告)号：US10575323B2
公开(公告)日：2020-02-25
申请号：US15553655
申请日：2016-03-18
摘要： A method by a user equipment (UE) is described. The method includes receiving, an evolved Node B (eNB) a RRC message including a parameter related to a SR periodicity for a secondary cell and a parameter related to a SR prohibit timer; and setting the SR prohibit timer based on the SR periodicity for the secondary cell. Setting the SR prohibit timer may be further based on the SR periodicity for the primary cell.
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公开(公告)号：US10542563B2
公开(公告)日：2020-01-21
申请号：US15562918
申请日：2016-04-01
摘要： Disclosed is a radio communication system in which a base station device and a terminal device communicate with each other, and the terminal device performs a random access procedure. The base station device notifies the terminal device of random access common configuration information including the number of repetitions for each level, information indicating a relationship between group information of random access preambles and the level, and the number of attempts of preamble transmission for each level. A MAC layer in the terminal device performs processing of increasing the level in a case that a first counter exceeds the number of attempts of transmission corresponding to the level.
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公开(公告)号：US10517032B2
公开(公告)日：2019-12-24
申请号：US15561501
申请日：2016-03-25
IPC分类号： H04W36/24 , H04W76/10 , H04W36/08 , H04W48/00 , H04W48/10 , H04W76/27 , H04W36/00 , H04W48/16 , H04W72/04 , H04W74/08
摘要： Provided is technology relating to: a terminal device, a base station device, a communication method, and an integrated circuit capable of efficiently performing a Radio Resource Control procedure. The terminal device is configured to, when receiving, from the base station device, an RRC message including information on a target cell, random access information relating to a coverage level, and a timer relating to a handover and indicating the handover, start the timer relating to the handover and execute a random access to the target cell using the random access information relating to the coverage level of the target cell.
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公开(公告)号：US10436842B2
公开(公告)日：2019-10-08
申请号：US15512098
申请日：2015-07-23
发明人： Katsunari Uemura , Shohei Yamada , Hidekazu Tsuboi
IPC分类号： H04W72/04 , H04W28/06 , H04W92/18 , H04W72/02 , H04W76/14 , G01R31/319 , G06F11/36 , H04B7/06 , H04L12/54 , H04M9/02 , H04W24/00
摘要： Provided is a technique related to a terminal apparatus, a base station apparatus, a communication system, a communication method, and an integrated circuit that are capable of efficiently performing device-to-device communication. In a case where a terminal apparatus capable of direct communication between terminal apparatuses starts a timer corresponding to a group index that identifies short-range group communication, to which the terminal apparatus belongs, and the timer expires, switching is performed from a first radio resource allocation method, by which a radio resource to be used for the direct communication is requested to a base station apparatus, to a second radio resource allocation method by which the terminal apparatus selects a radio resource to be used for the direct communication.
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公开(公告)号：US10321411B2
公开(公告)日：2019-06-11
申请号：US15591492
申请日：2017-05-10
发明人： Wataru Ouchi , Kimihiko Imamura , Yosuke Akimoto , Toshizo Nogami , Daiichiro Nakashima , Kazuyuki Shimezawa , Shoichi Suzuki , Yasuyuki Kato , Katsunari Uemura
摘要： A terminal apparatus for communication with a base station apparatus includes reception circuitry and a transmission circuitry. The reception circuitry receives a higher layer signal and sets first and second parameter sets for an uplink power control. The transmission circuitry transmits an uplink signal. If a cell of a first base station and a cell of a second base station are configured, the transmission circuitry sets a transmit power for the uplink signal based on the first parameter set upon detecting a DCI format from the first base station and sets transmit power based on the second parameter set upon detecting a DCI format from the second base station.
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公开(公告)号：US10205645B2
公开(公告)日：2019-02-12
申请号：US15984093
申请日：2018-05-18
发明人： Yasuyuki Kato , Katsunari Uemura
摘要： Provided is a wireless communication system in which a first base station apparatus and a second base station apparatus perform communication with a terminal device, in which the first base station apparatus transmits radio resource configuration information including radio bearer configuration information of the first base station apparatus or the second base station apparatus, to the terminal device, in which the terminal device receives the radio resource configuration information, in which, in a case where an RLC failure with respect to the first base station apparatus is detected, the terminal device executes a re-establishment procedure, and in which, in a case where an RLC failure with respect to the second base station apparatus is detected, the terminal device transmits to the first base station apparatus a message indicating that an RLC failure with respect to the second base station apparatus is detected, and suspends the radio bearer for the second base station apparatus.
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公开(公告)号：US10159110B2
公开(公告)日：2018-12-18
申请号：US15553654
申请日：2016-03-18
摘要： A method by a user equipment (UE) is described. The method includes receiving by the RRC entity of the UE, a PUCCH release request from a lower layer of the UE, and applying the default physical channel configuration for a scheduling request configuration for a concerned secondary cell, upon receiving the PUCCH release request from the lower layers of the UE. The PUCCH release request is notified by a Medium Access Control (MAC) entity of the UE in a case that a time alignment timer expires, the time alignment timer is associated with a secondary timing advance group (sTAG) and the concerned secondary cell belongs to the sTAG.
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公开(公告)号：US10123334B2
公开(公告)日：2018-11-06
申请号：US15786198
申请日：2017-10-17
发明人： Shohei Yamada , Katsunari Uemura , Yasuyuki Kato , Daiichiro Nakashima , Waho Oh
IPC分类号： H04L12/28 , H04W72/04 , H04W24/10 , H04J1/16 , H04L25/02 , H04L27/26 , H04W36/00 , H04W72/00 , H04W88/08
摘要： A communication system includes a terminal apparatus and a base station apparatus. The terminal apparatus communicates with a base station apparatus by carrier aggregation using a plurality of serving cells, where each of the plurality of serving cells has a different frequency. In addition, the terminal apparatus removes a measurement identity relevant to a serving cell of the plurality of serving cells based on that the serving cell was removed.
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