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公开(公告)号：US12081369B2
公开(公告)日：2024-09-03
申请号：US18297079
申请日：2023-04-07
IPC分类号： H04L25/02 , H04L5/00 , H04L27/26 , H04W72/1268
CPC分类号： H04L25/0226 , H04L5/0048 , H04L27/2605 , H04W72/1268
摘要： A user apparatus in a communication system includes: a plurality of user apparatuses each of which is configured to transmit a sounding reference signal (SRS); and a base station configured to wirelessly communicate with the plurality of the user apparatuses. The user apparatus receives, from the base station, configuration information related to a wireless resource of the sounding reference signal allocated to another user apparatus.
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公开(公告)号：US12069757B2
公开(公告)日：2024-08-20
申请号：US18146739
申请日：2022-12-27
CPC分类号： H04W76/15 , H04L5/001 , H04L5/0098 , H04W16/32 , H04W36/0069 , H04W72/23 , H04W72/56 , H04W88/06
摘要： A communication system includes a user apparatus; and a base station including a distributed unit (DU) configured to wirelessly communicate with the user apparatus and a central unit (CU) connected to the distributed unit. The base station including the CU and the DU supports packet duplication, and the DU notifies the user apparatus of starting the packet duplication.
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公开(公告)号：US12069632B2
公开(公告)日：2024-08-20
申请号：US17646503
申请日：2021-12-30
发明人： Mitsuru Mochizuki , Miho Maeda , Shinsuke Uga
IPC分类号： H04W72/0453 , H04L5/00 , H04W72/1263 , H04W72/54 , H04L1/1812 , H04W16/14 , H04W36/06 , H04W48/08 , H04W88/08
CPC分类号： H04W72/0453 , H04L5/00 , H04L5/001 , H04W72/1263 , H04W72/54 , H04L1/1812 , H04L5/0048 , H04L5/0053 , H04L5/0098 , H04W16/14 , H04W36/06 , H04W48/08 , H04W88/08
摘要： Provided is a communication system that can be normally and efficiently operated in the case where existing carriers and new carrier types coexist. A base station device and a communication terminal device are configured to perform communication in cells of legacy carriers LC1 to LC3 being existing carriers. When the base station device starts operating new carrier types NCT1 and NCT2, the NCT1 and NCT2 are associated with legacy carriers belonging to the same frequency band. For example, the NCT2 is associated with the LC2 or the LC3 and is not associated with the LC1. The legacy carriers LC1 to LC3 associated with the NCT1 and the NCT2 notify the communication terminal device of the information on the NCT1 and NCT2. This allows the communication terminal device to communicate with the NCT1 and the NCT2.
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公开(公告)号：US12035280B2
公开(公告)日：2024-07-09
申请号：US18304185
申请日：2023-04-20
摘要： In a communication system, a plurality of base stations includes an MeNB being a first base station, and a plurality of SeNBs to be connected to the MeNB. At least one of control plane data about control of communication and user plane data about a user is transmitted to and received from a user equipment (UE) via the first base station being the MeNB. The control plane data and the user plane data are contained in information provided by a core network about communication with the UE. The communication system can simplify processing of at least one of control plane data and user plane data when a communication terminal device communicates with a plurality of base station devices.
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公开(公告)号：US11871268B2
公开(公告)日：2024-01-09
申请号：US18060398
申请日：2022-11-30
CPC分类号： H04W28/06 , H04L1/1819 , H04L5/0055 , H04W80/02 , H04W80/08 , H04W84/20
摘要： Provided is a high-speed communication system with the high reliability and the low latency under New Radio (NR). A base station device includes a plurality of distributed units (DUs, 802) that transmit and receive radio signals, and a central unit (CU, 801) that controls the plurality of DUs (802). The CU (801) duplicates a downlink packet addressed to a communication terminal device (804), and forwards the duplicated downlink packet to each of at least two DUs (802) among the plurality of DUs (802). Each of the at least two of the DUs (802) transmits, to the communication terminal device (804) by the radio signal, the downlink packet obtained from the CU (801). Upon redundant receipt of the downlink packets, the communication terminal device (804) removes a redundant downlink packet in accordance with a predefined downlink packet removal criterion.
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公开(公告)号：US20230023578A1
公开(公告)日：2023-01-26
申请号：US17936489
申请日：2022-09-29
摘要： Provided is a communication system, etc. with low latency and high reliability, under New Radio (NR). A communication system includes a communication terminal device, and a plurality of nodes configured to be connected to the communication terminal device for radio communication and to provide a split bearer for the communication terminal device. The communication terminal device is configured to perform uplink transmission to an uplink transmission node among the plurality of nodes. The uplink transmission node is determined by an uplink transmission node determination process in which a node that provides the uplink transmission from the communication terminal device with lower latency among the plurality of nodes is determined as the uplink transmission node.
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公开(公告)号：US20220353770A1
公开(公告)日：2022-11-03
申请号：US17863533
申请日：2022-07-13
发明人： Takuya OHARA , Taisei Suemitsu , Mitsuru Mochizuki , Kuniyuki Suzuki , Masayuki Nakazawa , Daisuke Hiramatsu
摘要： When being connected to a macro cell (S-MeNB) and a small cell (SeNB), a user equipment device performs a pre-handover process of disconnecting the connection with the SeNB before a handover process of switching a macro cell connected with the UE from the macro cell (S-MeNB) that is a moving source to a macro cell (T-MeNB) that is a moving destination along with moving of the UE, and after the handover process, performs a post-handover process of reestablishing the connection with the SeNB.
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公开(公告)号：US10728889B2
公开(公告)日：2020-07-28
申请号：US15955863
申请日：2018-04-18
发明人： Miho Maeda , Mitsuru Mochizuki
摘要： User equipment includes an antenna, a controller, a transmitter, and a receiver. The transmitter sends a first radio frequency signal for communication with a primary cell to the antenna according to a first timing advance set by the controller, and sends a second radio frequency signal for communication with a secondary cell to the antenna according to a second timing advance set by the controller. The receiver sends received data to the controller including information regarding at least one of the first timing advance and the second timing advance. The first timing advance indicating a first uplink transmission timing alignment value and the second timing advance indicating a second uplink transmission timing alignment value.
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公开(公告)号：US20200187167A1
公开(公告)日：2020-06-11
申请号：US16794697
申请日：2020-02-19
发明人： Mitsuru Mochizuki , Miho Maeda , Yasushi Iwane , Takayuki Nonami
摘要： A cell2 configured by only a DL CC2 being a resource for downlink is configured. The cell2 does not include a resource for uplink, that is, a UL CC to be associated with the DL CC2 by a DL/UL link. The link information indicating the above is notified a communication terminal device by a base station device using the DL CC2. A DL CC1 and a UL CC1 constitute a cell1. The downlink communication from the base station device to the communication terminal device is performed using the cell1 and the cell2, and the uplink communication from the communication terminal device to the base station device is performed using the cell1.
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公开(公告)号：US10674514B2
公开(公告)日：2020-06-02
申请号：US15518536
申请日：2015-10-26
发明人： Masayuki Nakazawa , Kuniyuki Suzuki , Mitsuru Mochizuki , Koji Ono , Takayuki Nonami , Naohito Tomoe , Fumiki Hasegawa
摘要： A base station device is configured to set, for each communication terminal device, a radio format for signals transmitted to and received from the communication terminal device. The radio format is set for each communication terminal device in accordance with, for example, a type of use including a moving speed of the communication terminal device. The base station device may be configured to change the radio format for the communication terminal device based on the information about a change in the environment of a radio communication between the communication terminal device and the base station device and a change including the communication terminal device's location. The signals transmitted and received between the base station device and the communication terminal device include radio formats in which at least one of a length of a symbol of the signal and a length of a cyclic prefix in an OFDM scheme differs.
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