公开(公告)号：US10581507B2

公开(公告)日：2020-03-03

申请号：US15821338

申请日：2017-11-22

Applicant: Futurewei Technologies, Inc.

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

IPC: H04L12/50 ,  H04B7/06 ,  H04B7/0456 ,  H04L5/00 ,  H04W72/06 ,  H04W24/10 ,  H04W72/04

Abstract: A method and an apparatus for selecting beams for non-codebook based uplink multiple-input and multiple-output are disclosed. In an embodiment, a method implemented by a user equipment (UE) includes receiving an allocation of at least one sounding reference signal (SRS) resource in an uplink subframe from a transmission and reception point (TRP) for a first set of uplink transmission beams, transmitting precoded SRSs in the at least one SRS resource to the TRP, wherein the precoded SRSs are precoded with UE-selected precoders and at least one rank and receiving an identification of two or more precoders for a second set of uplink transmission beams, wherein the second set of uplink transmission beams is selected from the first set of uplink transmission beams, and wherein the two or more precoders are based on the precoded SRSs.

公开(公告)号：US10530548B2

公开(公告)日：2020-01-07

申请号：US15855157

申请日：2017-12-27

Applicant: Futurewei Technologies, Inc.

Inventor： Pengfei Xia ,  Bin Liu

IPC: H04W72/04 ,  H04L5/00

Abstract: A transmit-receive-point (TRP) may send a beam management configuration message to a user equipment (UE) that includes downlink beam management configuration parameters to use for an ensuing beam management procedure between the TRP and the UE. The beam management configuration message may specify various parameters associated with TRP/UE beams that are to be evaluated during the beam management procedure, directional transmission/reception capabilities of the TRP (e.g., how many transmit-beams and/or receive-beams the TRP is capable of using for simultaneous direction reception/transmission, etc.), spreading sequence parameters (e.g., which spreading sequence, or spreading sequence group, is to be used during the beam management procedure), and/or beam management protocol information.

公开(公告)号：US10420109B2

公开(公告)日：2019-09-17

申请号：US15487012

申请日：2017-04-13

Applicant: Futurewei Technologies, Inc.

Inventor： Richard Stirling-Gallacher ,  Bin Liu ,  Lili Zhang ,  Nathan Edward Tenny

IPC: H04W4/00 ,  H04W72/04 ,  H04L5/00 ,  H04B7/06 ,  H04B7/022 ,  H04B7/08

Abstract: A method for transmitting feedback includes receiving feedback configuration information for explicit channel feedback for a plurality of transmit beam-receive beam combinations (TRBCs) between the user device and transmit-receive points (TRPs) of a multi-point set associated with the user device, generating the explicit channel feedback for the plurality of TRBCs, generating at least one modified uplink resource for each TRP in a subset of the TRPs of the multi-point set, the modified uplink resources are generated in accordance with the feedback configuration information, the modified uplink resources are configured to convey the explicit channel feedback to the subset of TRPs of the multi-point set, and transmitting the modified uplink resources to the subset of the TRPs of the multi-point set, where the at least one modified uplink resource associated with a TRP in the subset of the TRPs is transmitted to the TRP using a single TRBC.

公开(公告)号：US10412767B2

公开(公告)日：2019-09-10

申请号：US15133285

申请日：2016-04-20

Applicant: Futurewei Technologies, Inc.

Inventor： Bin Liu ,  Richard Stirling-Gallacher

IPC: H04W74/08 ,  H04W56/00 ,  H04W72/04 ,  H04B7/06 ,  H04B7/08 ,  H04W24/02 ,  H04W84/04

Abstract: A method for operating a user equipment (UE) in a millimeter wave (mmWave) communications system includes receiving a first wide beam beam-formed reference signal from a mmWave evolved NodeB (eNB) during an initial time interval, the first wide beam beam-formed reference signal carrying timing information, detecting a wide beam boundary between the first wide beam beam-formed reference signal and a second wide beam beam-formed reference signal during a subsequent time interval, wherein both the first wide beam beam-formed reference signal and the second wide beam beam-formed reference signal are rotated by a narrow beam beam-width during each intermediate time interval between the initial time interval and the subsequent time interval, and informing the mmWave eNB of an indication that the UE detected the wide beam boundary during the subsequent time interval, the indication being used to assign a narrow beam direction to the UE.

公开(公告)号：US10411784B2

公开(公告)日：2019-09-10

申请号：US15785834

申请日：2017-10-17

Applicant: Futurewei Technologies, Inc.

Inventor： Young Hoon Kwon ,  Bin Liu ,  Pengfei Xia

IPC: H04B7/06 ,  H04W72/04 ,  H04W72/08 ,  H04W74/00 ,  H04W74/08

Abstract: The disclosure relates to technology for identifying a user equipment beam index in a base station. The base station indicates one or more resources assigned to the user equipment within a beam failure random access channel (BRACH) resource, and transmits one or more synchronization signal block resources and one or more new beam identification reference signal resources to the user equipment. The base station then receives one of the resources from a group of the one or more resources within the BRACH resource assigned to the user equipment corresponding to the BRACH resource, and identifies a preferred beam index of the user equipment based on information in the BRACH resource and the received one of the resources.

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：US20190124610A1

公开(公告)日：2019-04-25

申请号：US16224173

申请日：2018-12-18

Applicant: Futurewei Technologies, Inc.

Inventor： Richard Stirling-Gallacher ,  Bin Liu ,  Majid Ghanbarinejad ,  Qian Cheng

IPC: H04W56/00 ,  H04B7/06 ,  H04B7/02 ,  H04H20/16 ,  H04W16/28

Abstract: A method for synchronizing a user equipment (UE) is provided. The method includes determining a first beam identifier associated with a transmission beam conveying a first received beamformed synchronization signal, determining if a first synchronization cycle is complete, and based on the first synchronization cycle not being complete, repeating the determining the first beam identifier, and the determining if the first synchronization cycle is not complete until the first synchronization cycle is complete.

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：US20180310188A1

公开(公告)日：2018-10-25

申请号：US16009712

申请日：2018-06-15

Applicant: Futurewei Technologies, Inc.

Inventor： Richard Stirling-Gallacher ,  Bin Liu ,  Nathan Edward Tenny ,  Lili Zhang

IPC: H04W16/28 ,  H04W56/00 ,  H04W24/08

Abstract: A method includes measuring beam-formed reference signals transmitted by a plurality of mmWave transmission points (TPs), sending a cloud cell formation request including indicators associated with best mmWave TPs determined in accordance with the measured beam-formed reference signals, receiving a cloud cell formation request response including indicators associated with a subset of the best mmWave TPs selected by a central controller in accordance with selection information, where the subset of the best mmWave TPs includes a first mmWave transmission point (TP) serving as a master TP and a second mmWave TP serving as a slave TP, and establishing a cloud cell with mmWave TPs of the subset of the best mmWave TPs selected by the central controller, where a data connection is established with the slave TP and at least a control connection is established with the master TP.

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.