公开(公告)号：US10397930B2

公开(公告)日：2019-08-27

申请号：US16235782

申请日：2018-12-28

Applicant: Futurewei Technologies, Inc.

Inventor： Bin Liu ,  Richard Stirling-Gallacher ,  Pengfei Xia

IPC: H04W72/04 ,  H04W52/52

Abstract: A method for resource and power allocation indication in a beam-based access system is provided. In an embodiment, a method for signaling power allocation in a beam-based access system includes determining, by a transmit point (TP), a relative effective transmit power offset between a control beam and a data beam. The method also includes signaling, by the TP, the relative effective transmit power offset to a user equipment (UE). The UE performs automatic gain control (AGC) on a control channel and a data channel according to the relative effective transmit power offset signaled by the TP.

公开(公告)号：US20180331735A1

公开(公告)日：2018-11-15

申请号：US15718924

申请日：2017-09-28

Applicant: FutureWei Technologies, Inc.

Inventor： Pengfei Xia ,  Bin Liu ,  Richard Stirling-Gallacher

IPC: H04B7/0456 ,  H04L5/00 ,  H04B7/155

CPC classification number: H04B7/0456 ,  H04B7/15578 ,  H04L5/0051 ,  H04L5/02

Abstract: A method includes inserting a first reference signal and a plurality of bit fields on a first channel, to produce a first signal, where the plurality of bit fields includes a first bit field indicating whether a second reference signal is transmitted on a second channel, a second bit field indicating whether the first reference signal has the same precoding as the second reference signal, a third bit field indicating whether precoding of the first reference signal is similar to precoding of the second reference signal, or a fourth bit field indicating transmission precoding differences between the first reference signal and the second reference signal. The method also includes performing precoding on the first signal, to produce a first transmission signal, performing precoding on the second channel, to produce a second transmission signal, transmitting, to a receiver, the first transmission signal and transmitting, to the receiver, the second transmission signal.

公开(公告)号：US20180287756A1

公开(公告)日：2018-10-04

申请号：US15828107

申请日：2017-11-30

Applicant: Futurewei Technologies, Inc.

Inventor： Pengfei Xia ,  Bin Liu

IPC: H04L5/00 ,  H04W72/04

CPC classification number: H04L5/0048 ,  H04L5/0051 ,  H04W72/042 ,  H04W72/044 ,  H04W76/27

Abstract: An embodiment method defines a demodulation reference signal (DMRS) pattern for transmitting DMRSs for rank 3 or rank 4 transmissions. The DMRS pattern specifies 12 REs in total per physical resource block (PRB) for carrying DMRSs on three or four antenna ports in antenna ports 7-14 for rank 3 or rank 4 transmissions. DMRS settings for transmitting DMRS according to the DMRS pattern may be specified using a downlink control information table.

公开(公告)号：US20180254922A1

公开(公告)日：2018-09-06

申请号：US15448102

申请日：2017-03-02

Applicant: Futurewei Technologies, Inc.

Inventor： Richard Stirling-Gallacher ,  Bin Liu ,  Pengfei Xia ,  Nathan Edward Tenny ,  Hongcheng Zhuang

IPC: H04L25/02 ,  H04L5/00 ,  H04W72/04

Abstract: A method for transmitting feedback includes generating explicit channel feedback for a plurality of transmit beam-receive beam combinations (TRBCs) between the user device and a transmit-receive point (TRP), generating a modified resource in accordance with explicit feedback configuration information, the modified resource configured to convey the explicit channel feedback, wherein an explicit channel feedback associated with each TRBC is conveyed on a different data symbol of the modified resource, and transmitting the modified resource to the TRP using a single TRBC.

公开(公告)号：US20180192375A1

公开(公告)日：2018-07-05

申请号：US15821319

申请日：2017-11-22

Applicant: Futurewei Technologies, Inc.

Inventor： Pengfei Xia ,  Bin Liu ,  Richard Stirling-Gallacher

IPC: H04W52/14 ,  H04W52/32 ,  H04B7/06 ,  H04W52/36

Abstract: A method for controlling an uplink signal transmit power at the user equipment and a UE configured to perform such a method are disclosed. In an embodiment, the method includes receiving a downlink reference signal transmit power associated with a first resource indicator, a downlink reference signal transmit beamforming gain associated with a second resource indicator, an uplink signal receive beamforming gain associated with a third resource indicator, and an uplink signal target receive power associated with a fourth resource indicator and transmitting an uplink signal associated with a fifth resource indicator to a transmission point with a transmit power calculated based on the combination, wherein the downlink reference signal transmit power associated with the first resource indicator and the downlink reference signal transmit beamforming gain associated with the second resource indicator are signaled together as a single metric associated with a sixth resource indicator.

公开(公告)号：US20180191418A1

公开(公告)日：2018-07-05

申请号：US15839382

申请日：2017-12-12

Applicant: Futurewei Technologies, Inc.

Inventor： Pengfei Xia ,  Bin Liu

IPC: H04B7/06 ,  H04L5/00 ,  H04B17/318 ,  H04W16/28 ,  H04W72/04

Abstract: Embodiments of this disclosure provide techniques for determining a device's beam correspondence status. As used herein, a device is considered to have “beam correspondence” when the device's TX and RX antennas satisfy a calibration criteria. In one example, a device's TX and RX antennas satisfy the calibration criteria when a difference between quality parameters corresponding to reference signals transmitted and received using corresponding TX and RX beams is less than a threshold. In another example, a device's TX and RX antennas satisfy the calibration criteria when a list of indices ranking the device's TX beams matches a list of indices ranking the device's RX beams. The lists of indices may be derived by transmitting and receiving references signals according to the devices RX and TX beams, and then generating list of indices based on quality parameters of the respective RX and TX beams.

公开(公告)号：US20180131486A1

公开(公告)日：2018-05-10

申请号：US15800955

申请日：2017-11-01

Applicant: FutureWei Technologies, Inc.

Inventor： Bin Liu ,  Pengfei Xia

IPC: H04L5/00 ,  H04W72/04

CPC classification number: H04L5/0048 ,  H04B7/063 ,  H04B7/0639 ,  H04B7/066 ,  H04B7/0695 ,  H04L5/0057 ,  H04L25/0226 ,  H04W72/046

Abstract: Embodiments of this disclosure provide techniques for receiving reference signals by a user equipment (UE) from a base station in a downlink channel, as well as transmitting a linear combination index from the UE to the base station. In particular, the linear combination index identifies a combination of beams selected from a set of beams in accordance with the RS.

公开(公告)号：US12191969B2

公开(公告)日：2025-01-07

申请号：US17453757

申请日：2021-11-05

Applicant: Futurewei Technologies, Inc.

Inventor： Pengfei Xia ,  Bin Liu ,  Nathan Edward Tenny

IPC: H04B7/08 ,  H04B7/06 ,  H04W72/21 ,  H04W72/23 ,  H04W72/044

Abstract: Aspects of this disclosure provide techniques for detecting and recovering from beam-failure events. In some embodiments, motion sensor information generated by motion sensors on a UE is used to detect, predict, and/or recover from a beam failure event that results, or would otherwise result, from movement of the UE. The motion sensor information may be used to adjust a current beam direction used by the UE to transmit or receive a signal, or to determine a recommendation for adjusting a current beam direction of the base station. The motion sensor information may be generated by any sensor that detects a movement of the UE, such as a gyroscope, an accelerometer, a magnetometer, a global positioning system (GPS) sensor, a global navigation satellite system (GNSS) sensor, or any other device that detects a change in position/orientation of the UE.

公开(公告)号：US12127180B2

公开(公告)日：2024-10-22

申请号：US18355543

申请日：2023-07-20

Applicant: Futurewei Technologies, Inc.

Inventor： Young Hoon Kwon ,  Pengfei Xia ,  Bin Liu

IPC: H04W72/044 ,  H04B7/06 ,  H04B7/08 ,  H04L5/00 ,  H04W72/12 ,  H04W72/23

CPC classification number: H04W72/046 ,  H04B7/0695 ,  H04B7/088 ,  H04L5/00 ,  H04W72/12 ,  H04W72/23

Abstract: A method for operating a user equipment includes receiving a first frame on a first channel associated with a first beam identified during a beam failure recovery procedure, and determining that an assumed quasi-co-located relationship exists between the first channel and the first beam, and based thereon, decoding the first frame in accordance with a first reference signal on the first channel and using a first spatial domain receive filter that was used to decode the first beam.

公开(公告)号：US11711187B2

公开(公告)日：2023-07-25

申请号：US17368497

申请日：2021-07-06

Applicant: FutureWei Technologies, Inc.

Inventor： Bin Liu ,  Pengfei Xia

IPC: H04L5/00 ,  H04W72/04 ,  H04B7/06 ,  H04W72/044 ,  H04L25/02

CPC classification number: H04L5/0048 ,  H04B7/063 ,  H04B7/066 ,  H04B7/0639 ,  H04B7/0695 ,  H04L5/0057 ,  H04W72/046 ,  H04L25/0226

Abstract: Embodiments of this disclosure provide techniques for receiving reference signals by a user equipment (UE) from a base station in a downlink channel, as well as transmitting a linear combination index from the UE to the base station. In particular, the linear combination index identifies a combination of beams selected from a set of beams in accordance with the RS.