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：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：US10187829B2

公开(公告)日：2019-01-22

申请号：US14688471

申请日：2015-04-16

Applicant: FUJITSU CONNECTED TECHNOLOGIES LIMITED

Inventor： Yi Wang ,  Lei Zhang ,  Haibo Xu

IPC: H04W36/00 ,  H04W24/08 ,  H04W72/04

Abstract: A method and apparatus for cell handover and reconfiguration includes: performing cell measurement and reporting a result of measurement by UE according to a cell measurement request; detaching, when the UE receives a handover command transmitted by a macro eNB or a serving eNB of the UE, from the serving eNB by the UE and reserving an uplink time adjustment parameter NTA of the serving eNB by the UE; and performing cell handover and reconfiguration by the UE according to the handover command. With the method and apparatus of the embodiments, When the UE is still in a state of being connected to the serving eNB, the target eNB begins to detect its uplink signal to determine uplink time advance of the UE and the target eNB, and the UE replaces the source serving eNB with a new target eNB according to indication of other cells.

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.