公开(公告)号：US11711128B2

公开(公告)日：2023-07-25

申请号：US17467107

申请日：2021-09-03

Applicant: QUALCOMM INCORPORATED

Inventor： Muhammad Nazmul Islam ,  Bilal Sadiq ,  Ashwin Sampath ,  Sundar Subramanian ,  Junyi Li ,  Vasanthan Raghavan

IPC: H04B7/06 ,  H04L5/00 ,  H04W24/10 ,  H04W72/04 ,  H04B7/0456 ,  H04W16/28 ,  H04W72/044 ,  H04W88/02

CPC classification number: H04B7/0617 ,  H04B7/0456 ,  H04B7/0621 ,  H04B7/0695 ,  H04L5/0048 ,  H04W16/28 ,  H04W24/10 ,  H04W72/046 ,  H04W88/02

Abstract: Methods, systems, and devices for wireless communication are described. A network device, such as a base station, may transmit a request message to a user equipment (UE). The request message may include a request for the UE to transmit a set of sounding reference signals (SRSs). The set of SRSs may include two (or more) beamformed signals. The network device may receive the set of SRSs according to the request message. The network device may identify, based on a co-phasing parameter associated with the two (or more) beamformed signals, an antenna port precoder configuration to use for communicating with the UE.

公开(公告)号：US11658857B2

公开(公告)日：2023-05-23

申请号：US17037124

申请日：2020-09-29

Applicant: QUALCOMM Incorporated

Inventor： Tianyang Bai ,  Juergen Cezanne ,  Sundar Subramanian ,  Junyi Li

IPC: H04L27/26 ,  G06F17/14 ,  H04B1/04 ,  H04B1/16 ,  H04B1/40

CPC classification number: H04L27/26134 ,  G06F17/141 ,  H04B1/04 ,  H04B1/16 ,  H04B1/40 ,  H04L27/2636

Abstract: Methods, systems, and devices for wireless communications are described for phase error estimation and correction with sub-symbol resolution. A transmitting device may precode symbols (e.g., phase tracking reference signal (PT-RS) symbols) using a discrete Fourier transform (DFT). The transmitting device may map the DFT-precoded symbols to sets of adjacent subcarriers of a wireless signal, and may map other symbols to other subcarriers of the wireless signal. A receiving device may receive the wireless signal and may compare time domain representations of the DFT-precoded symbols with time domain representations of known reference symbols. The receiving device may estimate a phase error with sub-symbol resolution in the time domain based at least in part on the comparison, and may apply a phase correction in either the time or frequency domain to the other symbols.

公开(公告)号：US11647472B2

公开(公告)日：2023-05-09

申请号：US16949614

申请日：2020-11-06

Applicant: QUALCOMM Incorporated

Inventor： Navid Abedini ,  Junyi Li ,  Karl Georg Hampel ,  Hong Cheng ,  Jianghong Luo ,  Juergen Cezanne ,  Muhammad Nazmul Islam ,  Sundar Subramanian

IPC: H04W4/00 ,  H04W56/00 ,  H04L5/00 ,  H04L27/26 ,  H04W72/56 ,  H04B7/26 ,  H04W72/0446 ,  H04L45/02 ,  H04L45/64

CPC classification number: H04W56/0015 ,  H04B7/2606 ,  H04L5/0048 ,  H04L5/0053 ,  H04L27/2607 ,  H04L45/04 ,  H04L45/64 ,  H04W56/001 ,  H04W56/002 ,  H04W56/0045 ,  H04W72/0446 ,  H04W72/56 ,  H04W56/00

Abstract: Wireless communications systems and methods related to communicating in an integrated access backhaul (IAB) network are provided. A first wireless communication device receives synchronization information associated with one or more wireless communication of a multi-hop wireless network. The first wireless communication device determines a transmission timing adjustment for a second wireless communication device of the one or more wireless communication devices based on at least some of the synchronization information. The first wireless communication device transmits a message instructing the second wireless communication device to communicate with a third wireless communication device of the one or more wireless communication devices based on the transmission timing adjustment.

公开(公告)号：US11585919B2

公开(公告)日：2023-02-21

申请号：US16437092

申请日：2019-06-11

Applicant: QUALCOMM Incorporated

Inventor： Kapil Gulati ,  Junyi Li ,  Sundar Subramanian ,  Michael John Hamilton

IPC: G01S13/931 ,  G01S7/02

Abstract: Certain aspects provide a method for radar detection by an apparatus. The method generally includes transmitting a radar waveform in sets of transmission time intervals (TTIs), using a common set of radar transmission parameters in each set of TTIs, to perform detection of a target object, varying at least one of the common set of radar transmission parameters between sets of TTIs, and identifying interfering signals based on observed changes in monitored parameters of received signals across sets of TTIs due to the varying.

公开(公告)号：US11470569B2

公开(公告)日：2022-10-11

申请号：US16178969

申请日：2018-11-02

Applicant: QUALCOMM Incorporated

Inventor： Jung Ho Ryu ,  Navid Abedini ,  Junyi Li ,  Karl Georg Hampel ,  Sundar Subramanian ,  Muhammad Nazmul Islam ,  Jianghong Luo ,  Juergen Cezanne

IPC: H04B7/08 ,  H04Q1/20 ,  H04W56/00 ,  H04W72/04 ,  H04W16/28 ,  H04W24/08 ,  H04B7/06 ,  H04W16/14 ,  H04L43/0864 ,  H04B7/0413

Abstract: Methods, systems, and devices for wireless communications are described. A base station may transmit a downlink message to a user equipment (UE). The base station may allocate a receive time window associated with receiving an uplink message from the UE responsive to the downlink message, wherein the receive time window is allocated based at least in part on a maximum propagation round trip time (RTT) associated with UEs within a coverage area of the base station and a frame size of the uplink message. The base station may monitor the receive time window for the uplink message from the UE. The base station may receive the uplink message from the UE during the receive time window.

公开(公告)号：US11469937B2

公开(公告)日：2022-10-11

申请号：US15492124

申请日：2017-04-20

Applicant: QUALCOMM Incorporated

Inventor： Juergen Cezanne ,  Sundar Subramanian ,  Krishna Kiran Mukkavilli ,  Muhammad Nazmul Islam ,  Junyi Li

IPC: H04B1/7073 ,  H04L5/00 ,  H04W16/14 ,  H04L27/26 ,  H04W56/00 ,  H04B7/06 ,  H04W48/16 ,  H04W72/12 ,  H04W16/32 ,  H04W72/04

Abstract: Aspects of the present disclosure relate to methods and apparatus for location encoding for secondary synchronization signals (SSS) to convey additional information, such as a current symbol number. According to aspects, a method is provided herein for wireless communications that may be performed, for example, by a base station (BS). The method generally includes selecting frequency resources to use for transmitting synchronization signals in a symbol of a frame, wherein the frequency resources are selected based on a mapping of frequency resources to a location of the symbol within the frame; and transmitting synchronization signals to at least one user equipment (UE) according to the mapping. As a result, the UE may receive synchronization signals, determine a location of the current symbol in a frame based on the mapping, and synchronize to the BS based on the determined location of the current symbol. Numerous other aspects are provided.

公开(公告)号：US11310013B2

公开(公告)日：2022-04-19

申请号：US16672411

申请日：2019-11-01

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Tao Luo ,  Sundar Subramanian ,  Bilal Sadiq ,  Juergen Cezanne ,  Junyi Li

IPC: H04L5/00 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communication are described. A base station and user equipment (UE) may use subframe configurations that include dynamically scheduled channel state information reference signal (CSI-RS) symbols. For example, a base station may identify a subframe configuration that includes one or more sets of CSI-RS symbols of a subframe. The base station may indicate to a UE whether sets of CSI-RS symbols may be enabled or disabled during the subframe. The UE may receive multiple CSI-RSs at different locations within the subframe as indicated by the base station, and transmit CSI feedback to the base station based on at least one of the received CSI-RSs. In some examples, multiple base stations may coordinate the use of subframe configurations that include CSI-RS symbols that may be enabled or disabled.

公开(公告)号：US11284379B2

公开(公告)日：2022-03-22

申请号：US16512187

申请日：2019-07-15

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Sundar Subramanian ,  Ashwin Sampath ,  Juergen Cezanne ,  Bilal Sadiq ,  Junyi Li ,  Tao Luo

IPC: H04B7/212 ,  H04W72/04 ,  H04B7/06 ,  H04L5/00

Abstract: Various aspects of the disclosure relate to communicating uplink control information. As one example, a user equipment may send uplink control information to a base station. In some aspects, the number of symbols used to communicate the uplink control information may be based on a link gain associated with the UE and/or based on a payload size of the uplink control information. As another example, the user equipment may send channel information for a number of beams to the base station. In some aspects, the number of beams may be based on the type of channel that is used to send the uplink control information.

公开(公告)号：US11234273B2

公开(公告)日：2022-01-25

申请号：US15674168

申请日：2017-08-10

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Nazmul Islam ,  Sundar Subramanian ,  Junyi Li ,  Navid Abedini ,  Bilal Sadiq

IPC: H04W74/08 ,  H04B7/06 ,  H04L5/00 ,  H04B7/08 ,  H04W56/00 ,  H04W72/02 ,  H04W72/04 ,  H04W72/08 ,  H04W16/28 ,  H04W48/20 ,  H04W88/02 ,  H04W88/08 ,  H04B7/26 ,  H04W72/12

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may receive a downlink (DL) signal from a base station on DL beam(s). The UE may identify a selected DL beam of the DL beam(s) for communications from the base station to the UE. The UE may transmit a random access channel (RACH) message to the base station using at least one of a resource or a RACH waveform selected based at least in part on the selected DL beam.

公开(公告)号：US11228966B2

公开(公告)日：2022-01-18

申请号：US15988365

申请日：2018-05-24

Applicant: QUALCOMM Incorporated

Inventor： Navid Abedini ,  Karl Georg Hampel ,  Junyi Li ,  Sundar Subramanian ,  Muhammad Nazmul Islam ,  Juergen Cezanne

IPC: H04W48/14 ,  H04W16/10 ,  H04W56/00 ,  H04W72/04 ,  H04W76/14 ,  H04W74/00 ,  H04W72/02 ,  H04W74/08 ,  H04W92/20

Abstract: Methods, systems, and devices for wireless communication are described. A first wireless node may establish a wireless connection between the first wireless node and a second wireless node in a wireless backhaul communications network. The first wireless node may identify, at the first wireless node, a need for additional resources for wireless communications with a third wireless node. The first wireless node may transmit a request message to the second wireless node indicating that resources are requested at the first wireless node. The first wireless node may receive an indication of one or more available resources from the second wireless node. The first wireless node may select one or more of the available resources for wireless communications with the third wireless node.