公开(公告)号：US10778487B2

公开(公告)日：2020-09-15

申请号：US16442017

申请日：2019-06-14

Applicant: QUALCOMM Incorporated

Inventor： Yi Huang ,  Wanshi Chen ,  Hao Xu ,  Wei Zeng

IPC: H04L27/26 ,  H04L5/00 ,  H04W72/04

Abstract: A method and apparatus for demodulation reference signal (DMRS) communication are described. The method and apparatus include determining a DMRS pattern for at least two multiplexing schemes. In some aspects, the at least two multiplexing schemes may include orthogonal frequency-division multiplexing (OFDM) and single carrier frequency-division multiplexing (SC-FDM). Further, in some aspects, the DMRS pattern may correspond to a continuous tone pattern in each subframe transmitted in accordance with both SC-FDM and OFDM. Additionally, in some aspects, the DMRS pattern may correspond to a comb tone pattern in each subframe transmitted in accordance with both SC-FDM and OFDM. The method and apparatus further include transmitting a DMRS in accordance with at least one of the two multiplexing schemes and based on the DMRS pattern.

公开(公告)号：US20200267700A1

公开(公告)日：2020-08-20

申请号：US16790716

申请日：2020-02-13

Applicant: QUALCOMM Incorporated

Inventor： Seyedkianoush Hosseini ,  Peter Gaal ,  Alexei Yurievitch Gorokhov ,  Yi Huang ,  Joseph Binamira Soriaga ,  Jing Jiang ,  Amir Aminzadeh Gohari ,  Aamod Khandekar

IPC: H04W72/04 ,  H04L5/00 ,  H04W72/12 ,  H04L1/18

Abstract: Methods, systems, and devices for wireless communications at a user equipment (UE) are described. Techniques are described herein for performing out-of-order processing. The UE may receive a first downlink channel at a first time and a second downlink channel at a second time. The UE may determine that a priority of the second downlink channel is different (e.g., higher) than a priority of the first downlink channel. The UE may determine that a first uplink transmission associated with the first downlink channel is to be transmitted after a second uplink transmission associated with the second channel based on the different priorities. The UE may set one or more operations based on these determinations. In some cases, the UE may suspend processing the of the first downlink channel to process the second downlink channel.

公开(公告)号：US10728073B2

公开(公告)日：2020-07-28

申请号：US16146639

申请日：2018-09-28

Applicant: QUALCOMM Incorporated

Inventor： Renqiu Wang ,  Seyong Park ,  Yi Huang ,  Sony Akkarakaran

IPC: H04W72/12 ,  H04L27/26 ,  H04W72/04 ,  H04L1/18 ,  H04L5/00 ,  H04W76/27 ,  H04L25/02 ,  H04W4/70 ,  H04B7/0413

Abstract: Certain aspects of the present disclosure relate to methods and apparatus generating sequences and mapping cyclic shifts of the sequences to hypotheses for short burst transmissions, for example, in new radio (NR) technologies. An exemplary method includes selecting a computer generated sequence (CGS), from a plurality of CGSs; determining, based on different values of uplink control information (UCI) and a first shift index assigned to the transmitter, a shift to apply to the CGS; and transmitting the selected CGS, with the determined shift applied, in a short physical uplink control channel (PUCCH) to indicate the UCI.

公开(公告)号：US10659207B2

公开(公告)日：2020-05-19

申请号：US15979008

申请日：2018-05-14

Applicant: QUALCOMM Incorporated

Inventor： Renqiu Wang ,  Yi Huang ,  Wanshi Chen ,  Peter Gaal ,  Seyong Park ,  Hao Xu

IPC: H04L5/00 ,  H04W52/34 ,  H04W52/28 ,  H04W52/14 ,  H04W52/24 ,  H04W52/32 ,  H04W52/36 ,  H04W72/04 ,  H04W52/06 ,  H04W52/42 ,  H04W52/26

Abstract: Aspects of the present disclosure implement techniques for power control management between the base station and the UE to support multiple waveforms and services. In one example, the power control management system may implement independent power control loops for each waveform and service (e.g., eMBB, uRLLC, etc.) supported by the wireless communication system. For example, the base station may transmit a first power control command to a UE for first waveform (e.g., CP-OFDM) or service (e.g., eMBB) and a second power control command to the UE for the second waveform (DFT-OFDM) or service (e.g., uRLLC). Features of the present disclosure may also implement techniques that allow the base station to transmit a single power control command for configuring the power control for a plurality of waveforms or services. Upon receiving the power control commands, the UE may configure the transmission power for uplink traffic based on the power control commands.

公开(公告)号：US20200107227A1

公开(公告)日：2020-04-02

申请号：US16573093

申请日：2019-09-17

Applicant: QUALCOMM Incorporated

Inventor： Huilin Xu ,  Wanshi Chen ,  Yi Huang

IPC: H04W28/16 ,  H04L5/14 ,  H04B17/345

Abstract: Methods, systems, and devices for wireless communications are described. A core network may organize a set of base stations into a set of cell groups, each cell group including one or more base stations, the cell groups being organized based on potential of each base station to cause interference, by downlink transmission, to reception of uplink transmissions at remote base stations. The core network may identify cell group identifications for each cell group and configure the set of base stations with respective cell group identifications so that signals transmitted from individual base stations of each cell group include the respective cell group identification, and so that remote base stations whose uplink transmissions are interfered with can identify the cell group of base stations causing the interference. The number of base stations in a cell group may be iteratively reduced based on identifying the interference.

公开(公告)号：US20200077416A1

公开(公告)日：2020-03-05

申请号：US16552810

申请日：2019-08-27

Applicant: QUALCOMM Incorporated

Inventor： Wei Yang ,  Yi Huang

IPC: H04W72/12 ,  H04W72/04 ,  H04L25/02 ,  H04L5/00 ,  H04L1/00

Abstract: Methods, systems, and devices for wireless communications are described. Generally, the described techniques provide for configuring group indices for uplink transmissions from a user equipment (UE) such that the UE may be able to determine whether to combine uplink transmissions scheduled on overlapping time resources. Specifically, the UE may combine uplink transmissions associated with a same group index for transmission in a single channel, and the UE may avoid combining uplink transmissions associated with different group indices. In some cases, the indication of a group index associated with an uplink transmission from a UE may be explicit (e.g., provided in a downlink control information (DCI) message), and, in other cases, the indication of a group index associated with an uplink transmission from a UE may be implicit (e.g., corresponding to a resource allocated for the uplink transmission).

公开(公告)号：US20200053666A1

公开(公告)日：2020-02-13

申请号：US16572450

申请日：2019-09-16

Applicant: QUALCOMM INCORPORATED

Inventor： Seyong Park ,  Amir Aminzadeh Gohari ,  Renqiu Wang ,  Yi Huang ,  Hao Xu

IPC: H04W52/36 ,  H04W52/34 ,  H04W72/12 ,  H04W52/14

Abstract: Wireless communications systems and methods related to improve control reporting latency are provided. A wireless communication device receives, from a first link in a first time interval, first control information associated with a second link and the first time interval. The wireless communication device transmits, via the second link in the first time interval, a control report associated with the second link based on a report configuration that is independent from the first control information. The report configuration is associated with a waveform type. The wireless communication device receives, from the first link in a second time interval following the first time interval, second control information that is dependent on the control report. The report configuration includes a power headroom (PHR) report configuration. The PHR report configuration includes a reference PHR report configuration. The PHR report configuration includes a delayed PHR report configuration.

公开(公告)号：US20200044804A1

公开(公告)日：2020-02-06

申请号：US16594960

申请日：2019-10-07

Applicant: QUALCOMM Incorporated

Inventor： Yi Huang ,  Wei Zeng ,  Wanshi Chen ,  Hao Xu ,  Tingfang Ji

IPC: H04L5/00 ,  H04B7/0413 ,  H04B7/06 ,  H04L1/00

Abstract: Both precoded sounding reference signals (SRS) and unprecoded SRS are transmitted from a UE to an eNB. The UE may transmit both in the same subframe using either TDM or FDM. Or the UE may transmit each in different subframes from each other. The eNB uses some combination of the precoded SRS and the unprecoded SRS in scheduling resources for the UE. The eNB may also provide instruction to the UE for PUSCH precoding for data transmission. The eNB may signal the UE to use the same precoding as for the precoded SRS. The eNB may instead signal the UE to use different precoding by including the precoding information or delta information between the precoding used for the precoded SRS and the selected precoding for the PUSCH data.

公开(公告)号：US20200044705A1

公开(公告)日：2020-02-06

申请号：US16525343

申请日：2019-07-29

Applicant: QUALCOMM Incorporated

Inventor： Gokul Sridharan ,  Jay Kumar Sundararajan ,  Yi Huang ,  Wei Yang ,  Joseph Binamira Soriaga

IPC: H04B7/0456 ,  H04L5/00 ,  H04B7/02 ,  H04B7/06 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communications are described. In some cases, a user equipment (UE) may use multiple antenna ports to communicate with multiple transmission/reception points (TRPs), and each antenna port may correspond to a spatial dimension along which wireless communications may be transmitted. The UE may transmit a first sounding reference signal (SRS) to a serving TRP to aid the serving TRP in determining a subset of spatial dimensions available to the UE along which to transmit downlink transmissions. Upon receiving a downlink transmission from the serving TRP along the subset of spatial dimensions as determined by the serving TRP, the UE may transmit a second SRS to a neighboring TRP to indicate the subset of spatial dimensions. The neighboring TRP avoid transmitting downlink transmissions to the UE or to other UEs along the subset of spatial dimensions, thereby mitigating interference along the subset of spatial dimensions.

公开(公告)号：US20200037328A1

公开(公告)日：2020-01-30

申请号：US16523103

申请日：2019-07-26

Applicant: QUALCOMM Incorporated

Inventor： Gokul Sridharan ,  Jay Kumar Sundararajan ,  Yi Huang ,  Wei Yang ,  Joseph Binamira Soriaga ,  Tingfang Ji

IPC: H04W72/04 ,  H04B7/0456 ,  H04B7/06

Abstract: Techniques are described herein for allocating transmit power between precoding resource groups (PRGs) and/or transmit chains of a user equipment (UE) to reduce the amount of total transmit power that is unused. The UE may determine a set of precoding scaling factors for each PRG to efficiently allocate a total transmit power between the PRGs using a two-stage approach. During a first stage, the UE may determine PRG-specific precoding scaling factors for each PRG associated with an uplink transmission. During a second stage, the UE may determine a residual precoding scaling factor to apply to all the PRGs associated with the uplink transmission and determine overall precoding scaling factors for each PRG. The second stage may be configured to refine the scaling factors determined in the first stage such that at least some of the unused transmit power is allocated to at least one of the PRGs or transmit chains.