公开(公告)号：US20220400511A1

公开(公告)日：2022-12-15

申请号：US17776554

申请日：2019-11-28

Applicant: Qiaoyu LI ,  Jing LEI ,  Chao WEI ,  Wanshi CHEN ,  Umesh PHUYAL ,  Peter Pui Lok ANG ,  Krishna Kiran MUKKAVILLI ,  Hao XU ,  Qualcomm Incorporated

Inventor： Qiaoyu LI ,  Jing LEI ,  Chao WEI ,  Wanshi CHEN ,  Umesh PHUYAL ,  Peter Pui Lok ANG ,  Krishna KIRAN MUKKAVILLI ,  Hao XU

IPC: H04W74/00 ,  H04W24/08

Abstract: Methods, systems, and devices for wireless communications are described. A group of random access channel opportunities are identified over which to transmit a preamble associated with a random access channel procedure. A preamble sequence group associated with the identified group of random access channel opportunities is determined based on a repetition level associated with the preamble sequence group. At least one downlink message associated with the random access channel procedure is received based on the repetition level.

公开(公告)号：US20220345286A1

公开(公告)日：2022-10-27

申请号：US17640861

申请日：2020-09-09

Applicant: Qualcomm Incorporated

Inventor： Bo CHEN ,  Hao XU ,  Peter GAAL

IPC: H04L5/14 ,  H04W72/12 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communications are described. A communication device, otherwise known as a user equipment (UE) may receive an indication of an uplink transmission timing pattern configuration for transmitting uplink transmissions on a first carrier. The UE may identify to use both the first carrier and a second carrier during a single uplink transmission mode, where the UE may transition between sending the uplink transmissions on the first and second carriers. The UE may also determine, based on the uplink transmission timing pattern configuration, a timing of uplink carrier switching periods for retuning between transmissions on the first carrier and on the second carrier. As a result, the UE may transmit, during the single uplink transmission mode, on both the first carrier and the second carrier in accordance with the uplink transmission timing pattern configuration for the first carrier and the uplink carrier switching periods.

公开(公告)号：US20220330348A1

公开(公告)日：2022-10-13

申请号：US17634618

申请日：2020-08-11

Applicant: Qualcomm Incorporated

Inventor： Chao WEI ,  Qiaoyu LI ,  Hao XU ,  Wanshi CHEN

IPC: H04W74/08 ,  H04W72/04 ,  H04W72/12 ,  H04W56/00

Abstract: Methods, systems, and devices for wireless communications are described. Generally, the described techniques provide for a user equipment (UE) receiving, from a base station, one or more random access channel (RACH) configurations. The RACH configurations may allocate resources for a contention-based RACH procedure for accessing a wireless network. Based on the RACH configurations, the UE may determine a set of random access occasions for an association period. From the set of random access occasions, the UE may map one or more indices of a plurality of synchronization signal blocks to one or more random access occasions. Using the one or more random access occasions, the UE may transmit a random access sequence, including one or more repetitions of the random access sequence to the base station to access the wireless network.

公开(公告)号：US20220287062A1

公开(公告)日：2022-09-08

申请号：US17597121

申请日：2019-07-04

Applicant: QUALCOMM Incorporated

Inventor： Min HUANG ,  Chao WEI ,  Hao XU

IPC: H04W72/12 ,  H04W72/04 ,  H04L5/00 ,  H04L1/00 ,  H04L5/14

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a base station (BS) may identify a collision between a data transmission and a demodulation reference signal (DMRS) transmission in a full-duplex time-frequency resource. The BS may transmit, to a wireless communication device, an indication of a time-frequency mapping for a zero-power DMRS (ZP-DMRS) in the full-duplex time-frequency resource. The time-frequency mapping for the ZP-DMRS, and a time-frequency mapping in the full-duplex time-frequency resource for the DMRS transmission, may be a same time-frequency mapping. Numerous other aspects are provided.

公开(公告)号：US20220140946A1

公开(公告)日：2022-05-05

申请号：US17310189

申请日：2019-01-23

Applicant: Kai CHEN ,  Changlong XU ,  Liangming WU ,  Jian LI ,  Jing JIANG ,  Hao XU ,  QUALCOMM Incorporated

Inventor： Kai CHEN ,  Changlong XU ,  Liangming WU ,  Jian LI ,  Jing JIANG ,  Hao XU

IPC: H04L1/08

Abstract: Wireless communications systems and methods related to hybrid repeat request (HARQ) with rate splitting are provided. A first wireless communication device communicates, with a second wireless communication device, a first communication signal including a plurality of information bits. The first wireless communication device determines a number of bits in the plurality of information bits to be repeated in a second communication signal based on channel capacity information. The first wireless communication device communicates, with the second wireless communication device, the second communication signal including the plurality of information bits and a repetition of a subset of the plurality of information bits, where the subset of the plurality of information bits includes the determined number of bits.

公开(公告)号：US20220123801A1

公开(公告)日：2022-04-21

申请号：US17427585

申请日：2020-01-31

Applicant: Qualcomm Incorporated

Inventor： Bo CHEN ,  Yuwei REN ,  Renqiu WANG ,  Ruifeng MA ,  Pavan Kumar VITTHALADEVUNI ,  Joseph Binarnira SORIAGA ,  Tingfang JI ,  Hao XU

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

Abstract: Methods, systems, and devices for wireless communications are described. In some systems, a user equipment (UE) may transmit feedback to a base station indicating phase values for sub-bands in a bandwidth part (BWP). The base station may use the phase feedback to perform precoding on a set of beams. To support a reduced payload overhead for the feedback, the UE may implement differential phase feedback. For example, the UE may divide the BWP into a number of sub-band groups and may generate, for each sub-band group of each beam, a first set of bits indicating an absolute phase value for a first sub-band of the sub-band group. The UE may additionally generate a second set of bits indicating differential phase values for the other sub-bands of each sub-band group. The UE may report the first and second sets of bits for the beams to the base station for precoding.

公开(公告)号：US20220109481A1

公开(公告)日：2022-04-07

申请号：US17429488

申请日：2020-02-15

Applicant: Qualcomm Incorporated

Inventor： Bo CHEN ,  Yuwei REN ,  Liangming WU ,  Yu ZHANG ,  Ruifeng MA ,  Chenxi HAO ,  Renqiu WANG ,  Hao XU

IPC: H04B7/06 ,  H04B7/0456 ,  H04L25/02

Abstract: Methods, systems, and devices for wireless communications are described. In some systems, a user equipment (UE) may perform channel state information (CSI) measurements on one or more reference signal transmissions received from a base station. Based on the CSI measurements, the UE may generate a CSI report, and the UE may transmit the CSI report to the base station. In some cases, the generated CSI report may include a first portion and a second portion. The first portion may indicate whether the second portion of the CSI report includes full-band CSI feedback or partial-band CSI feedback. The second portion may provide the CSI feedback for one or more identified sub-bands. In some cases, the second portion may include a sub-band index indicating the identified sub-bands. Additionally or alternatively, the second portion may include a bitmap indicating a correspondence between multiple CSI feedback values and multiple corresponding sub-band indexes.

公开(公告)号：US20220029685A1

公开(公告)日：2022-01-27

申请号：US17311773

申请日：2019-12-19

Applicant: QUALCOMM Incorporated

Inventor： Qiaoyu LI ,  Liangming WU ,  Chenxi HAO ,  Joseph Binamira SORIAGA ,  Hao XU

IPC: H04B7/06

Abstract: Configurations and feedback schemes for compressed channel state information (CSI) feedback are provided. A User Equipment (UE) determines a constraint on a total number of transfer domain coefficients to be reported for compressed Channel State Information (CSI) feedback by the UE for a plurality of beams identified for the feedback, wherein each transfer domain coefficient is associated with amplitude information and phase information. The UE selects from a transfer domain coefficient compression matrix, based on the constraint, a set of one or more transfer domain coefficients to report for each of the beams. The UE reports information indicating a number of selected transfer domain coefficients in the set of transfer domain coefficients for each beam and a location of each transfer domain coefficient within the transfer domain coefficient compression matrix and reports at least the amplitude and phase information for the selected coefficients.

公开(公告)号：US20210352668A1

公开(公告)日：2021-11-11

申请号：US17385861

申请日：2021-07-26

Applicant: QUALCOMM Incorporated

Inventor： Wanshi CHEN ,  Hao XU ,  Peter GAAL ,  Tingfang JI

IPC: H04W72/04 ,  H04L1/00 ,  H04L1/18 ,  H04W52/38

Abstract: Certain aspects of the present disclosure propose methods for improving phase continuity in an uplink transmit time interval (TTI) bundle. A first method may include identifying a segment of UL subframes in the TTI bundle and maintaining substantially the same transmit power/timing/frequency when transmitting data to a node over the segment of UL subframes in the TTI bundle. Another method may include ignoring reception of downlink subframes for a duration of the TTI bundle.

公开(公告)号：US20210281375A1

公开(公告)日：2021-09-09

申请号：US17209194

申请日：2021-03-22

Applicant: QUALCOMM Incorporated

Inventor： Renqiu WANG ,  Jing JIANG ,  Hao XU ,  Chong LI

IPC: H04L5/00 ,  H04W72/14 ,  H04W72/12

Abstract: In some circumstances, a URLLC may preempt resource. An apparatus may be configured to receive a set of resource blocks from a base station including at least one of eMBB data or URLLC data in a PDSCH. The apparatus may receive a URLLC indicator from the base station. The URLLC indicator may be received embedded within the URLLC data or received separate from the URLLC data within DCI of a PDCCH. The URLLC indicator indicates whether the set of resource blocks includes at least part of the URLLC data. The apparatus may determine, based on the URLLC indicator, whether the set of resource blocks includes the URLLC data and processing the set of resource blocks based on a result of determining whether the set of resource blocks includes the URLLC data.