公开(公告)号：US10284352B2

公开(公告)日：2019-05-07

申请号：US15615452

申请日：2017-06-06

Applicant: FUJITSU CONNECTED TECHNOLOGIES LIMITED

Inventor： Lei Zhang ,  Yi Wang ,  Yanling Lu ,  Hua Zhou

IPC: H04W4/00 ,  H04L5/00 ,  H04L1/00 ,  H04W72/04

Abstract: A method for configuring a User Equipment (UE) with a Channel Quality Index (CQI) table, the method includes: calculating a Precoding Matrix Indicator (PMI) and Rank Indication (RI) according to a channel estimated result; determining a configured CQI index table according to received CQI index table indication information transmitted by a base station, the base station configuring the CQI index table by selecting the CQI index table from at least two CQI index tables; and calculating a CQI index according to the calculated PMI and the RI using the configured CQI index table.

公开(公告)号：US11258569B2

公开(公告)日：2022-02-22

申请号：US16807821

申请日：2020-03-03

Applicant: FUJITSU CONNECTED TECHNOLOGIES LIMITED

Inventor： Lei Zhang ,  Yi Wang ,  Yanling Lu ,  Hua Zhou

IPC: H04W72/04 ,  H04L5/00 ,  H04L1/00

Abstract: A User Equipment (UE) including: a plurality of Channel Quality Indicator (CQI) index tables, at least one of which includes one or more CQI index corresponding to a modulation of higher order that is not supported by the other CQI index table; a receiver configured to receive CQI index table indication information from a base station, the CQI index table indication information indicating which CQI index table to use for CQI calculation; and a processor configured to calculate a CQI index by using the CQI index table indicated by the CQI index table indication information.

公开(公告)号：US10827369B2

公开(公告)日：2020-11-03

申请号：US15013453

申请日：2016-02-02

Applicant: FUJITSU CONNECTED TECHNOLOGIES LIMITED

Inventor： Lei Zhang ,  Yi Wang ,  Hua Zhou

IPC: H04W24/08 ,  H04W72/04 ,  H04W56/00 ,  H04W24/10 ,  H04W48/16

Abstract: Embodiments of the present disclosure provide a cell discovery and measurement method, a base station and UE. The cell discovery and measurement method includes: a cell base station transmits a discovery signal enabling the cell to be discovered by a UE, and enables the UE to achieve synchronization with the cell base station; and transmits a measurement signal after transmitting the discovery signal. Through the embodiments of the present disclosure, the time for transmitting the discovery signal for a single time can be made as short as possible, an interval between two times of transmitting the discovery signals can be made as long as possible, and the measurement signal is only transmitted in need, thereby making the cell as energy-saving as possible; and the UE can accurately perform RRM measurement by measuring the signal, thereby increasing precision of the RRM measurement.

公开(公告)号：US10716051B2

公开(公告)日：2020-07-14

申请号：US15173010

申请日：2016-06-03

Applicant: FUJITSU CONNECTED TECHNOLOGIES LIMITED

Inventor： Lianhai Wu ,  Tao Qiu ,  Haibo Xu ,  Hua Zhou

IPC: H04W48/08 ,  H04W72/04 ,  H04W8/00 ,  H04W76/14

Abstract: Embodiments of the present disclosure provide a method and apparatus for transmitting a D2D discovery signal and a communication system. The method for transmitting includes: a UE selects a part of resources from a resource pool for transmitting a D2D discovery signal; the part of resources are selected in a manner of limiting number of times of transmission, or in a manner of limiting time interval, or in a manner of calculating a resource position; and transmits the D2D discovery signal by using the selected part of resources. With the embodiments of the present disclosure, malignant competitions may be avoided, resource utilization may be improved, and probabilities of undiscovery between UEs may be lowered; or detection may performed accurately, and complexity of a UE may be lowered.

公开(公告)号：US10701564B2

公开(公告)日：2020-06-30

申请号：US15272917

申请日：2016-09-22

Applicant: FUJITSU CONNECTED TECHNOLOGIES LIMITED

Inventor： Yueqiao Xu ,  Hongchao Li ,  Hua Zhou

IPC: H04W16/10 ,  H04L1/18 ,  H04W72/04 ,  H04W92/18

Abstract: Embodiments of the present disclosure provide a signal retransmission apparatus and method and a communication system. The method includes: a first UE determines a resource for retransmitting a signal according to a resource for initially transmitting the signal and a frequency hopping pattern; and retransmits the signal to a second UE according to the determined resource. With the embodiments of the present disclosure, interference between UEs may be randomized as possible, and complexity of blind detection by receiver end UE may be lowered as possible.

公开(公告)号：US10182431B2

公开(公告)日：2019-01-15

申请号：US15583419

申请日：2017-05-01

Applicant: FUJITSU CONNECTED TECHNOLOGIES LIMITED

Inventor： Yi Zhang ,  Yi Wang ,  Jian Zhang ,  Hua Zhou ,  Jianming Wu

IPC: H04L5/00 ,  H04B7/06 ,  H04B7/024 ,  H04L1/00 ,  H04W24/10 ,  H04W72/04

Abstract: Embodiments of the present invention provide a method and apparatus for triggering aperiodic feedback in coordinated multipoint transmission. The method includes: transmitting, by an eNB to UE, dynamic control information (DCI) and preconfigured feedback sets corresponding to the DCI, so that the UE aperiodically feeds back corresponding channel state information (CSI) according to the DCI and the feedback sets corresponding to the DCI; wherein the preconfigured feedback sets corresponding to the DCI are classified according to a triggered transmitting point or a CSI-RS of non-zero power, or are classified according to configured CSI, or are classified according to an interference type. With the method and apparatus of the embodiments of the present invention, a relatively good tradeoff between flexibility of aperiodic CSI feedback and signaling load in a CoMP transmission process or a joint transmission process of CoMP and CA may be achieved.