公开(公告)号：US20220131585A1

公开(公告)日：2022-04-28

申请号：US17429065

申请日：2019-02-15

Applicant: Liangming WU ,  Chao WEI ,  Qiaoyu LI ,  Chenxi HAO ,  Hao XU ,  Qualcomm Incorporated

Inventor： Liangming WU ,  Chao WEI ,  Qiaoyu LI ,  Chenxi HAO ,  Hao XU

IPC: H04B7/06

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may perform channel state information measurements on reference signal transmissions from a base station. The UE may identify a set of cross layer coefficients associated with a set of spatial layers based on the channel state information measurements. The UE may additionally identify a set of precoding coefficients associated with a spatial layer from the set of spatial layers. In some implementations, the set of precoding coefficients may be based on the set of cross layer coefficients. In some examples, the UE may transmit the set of cross layer coefficients and the set of precoding coefficients to the base station.

公开(公告)号：US20220077909A1

公开(公告)日：2022-03-10

申请号：US17310350

申请日：2020-02-11

Applicant: QUALCOMM Incorporated

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

IPC: H04B7/06 ,  H04W72/04

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a base station may determine that a user equipment (UE) is to use a differential reporting mode based at least in part on a channel state information (CSI) report from the UE. The base station may transmit to the UE, signaling to cause the UE to use the differential reporting mode based at least in part on determining that the UE is to use the differential reporting mode. Numerous other aspects are provided.

公开(公告)号：US20220021558A1

公开(公告)日：2022-01-20

申请号：US17309369

申请日：2018-11-21

Applicant: QUALCOMM Incorporated

Inventor： Bo CHEN ,  Pavan Kumar VITTHALADEVUNI ,  Joseph Binamira SORIAGA ,  Ruifeng MA ,  Alexandros MANOLAKOS ,  Yeliz TOKGOZ ,  Tingfang JI ,  Hao XU

IPC: H04L25/02 ,  H04L5/00 ,  H04W24/10

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may receive a signaling communication that includes information specifying whether a channel state information reference signal (CSI-RS) precoding resource block group includes a same quantity of resource blocks (RBs) that is included in a CSI reporting subband configured for the UE. The CSI-RS precoding resource block group may enable the UE to perform a channel estimation based at least in part on a CSI-RS transmitted by a base station. The UE may perform the channel estimation based at least in part on the CSI-RS transmitted by the base station. The channel estimation may be based at least in part on whether the CSI-RS precoding resource block group includes the same quantity of RBs that is included in the CSI reporting subband configured for the UE. Numerous other aspects are provided.

公开(公告)号：US20210352695A1

公开(公告)日：2021-11-11

申请号：US17272024

申请日：2019-09-21

Applicant: QUALCOMM Incorporated

Inventor： Qiaoyu LI ,  Chao WEI ,  Yu ZHANG ,  Liangming WU ,  Hao XU ,  Wanshi CHEN

IPC: H04W72/12

Abstract: Certain aspects of the present disclosure provide techniques for indicating a preemption of resources impacting a joint transmission from multiple transmitting entities to a user equipment. The transmitting entities may be associated with a virtual cell ID or a demodulation reference signal (DMRS) port group ID.

公开(公告)号：US20210345079A1

公开(公告)日：2021-11-04

申请号：US17373750

申请日：2021-07-12

Applicant: QUALCOMM Incorporated

Inventor： Hao XU ,  Wanshi CHEN ,  Peter GAAL

IPC: H04W4/70 ,  H04W74/08

Abstract: Certain aspects of the present disclosure generally relate to wireless communications and, more particularly, to techniques for control-less operation for machine-type communications (MTC).

公开(公告)号：US20210281448A1

公开(公告)日：2021-09-09

申请号：US17259207

申请日：2019-07-23

Applicant: Qiaoyu LI ,  Yu ZHANG ,  Chao WEI ,  Chenxi HAO ,  Liangming WU ,  Hao XU ,  Qualcomm Incorporated

Inventor： Qiaoyu LI ,  Yu ZHANG ,  Chao WEI ,  Chenxi HAO ,  Liangming WU ,  Hao XU

IPC: H04L25/02 ,  H04B7/0404 ,  H04B7/0456 ,  H04L5/00 ,  H04W8/24 ,  H04W72/04

Abstract: A base station may determine co-phase information and uplink precoding information (e.g., user equipment (UE) precoder information) based on one or more received sounding reference signals (SRSs) from a UE. The UE may adjust precoders or co-phase for different SRS transmissions over the one or more configured SRS resources. As such, the base station may indicate either co-phase information or uplink precoding information via an SRS resource indicator (SRI), and may transmit an explicit indication of the remaining co-phase information or uplink precoding information in addition to the SRI. In other examples (e.g., when only a single SRS resource is configured), the base station may transmit an index corresponding to uplink precoding information, as well as a separate indication of co-phase information. In some cases, a port selection pattern may be included with an explicit indication, indicating a selection of antenna port indices the precoder or co-phase index applies to.

公开(公告)号：US20210250945A1

公开(公告)日：2021-08-12

申请号：US17241040

申请日：2021-04-26

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/04 ,  H04W4/06 ,  H04L1/18 ,  H04L1/00

Abstract: Certain aspects of the present disclosure propose techniques for transmission time interval (TTI) bundling for physical downlink shared channel (PDSCH) in long term evolution (LTE). According to certain aspects a method is provided for wireless communications. The method may be performed, for example, by a user equipment (UE). The method generally includes identifying a transmit time interval (TTI) bundle comprising a subset of subframes from a set of subframes for transmitting data on a physical downlink shared channel (PDSCH) and receiving the data on the PDSCH in the subset of subframes.

公开(公告)号：US20210234639A1

公开(公告)日：2021-07-29

申请号：US17054917

申请日：2019-05-28

Applicant: Kai CHEN ,  Jian LI ,  Changlong XU ,  Liangming WU ,  Hao XU ,  Qualcomm incorporated

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

IPC: H04L1/18 ,  H04L1/00 ,  H04L5/00

Abstract: A device may identify that an incremental redundancy hybrid automatic repeat request (IR-HARQ) scheme is used in association with sequential transmissions of an information bit vector to or from another wireless device, where each transmission in the scheme is associated with a resource size. The device may identify a mother code length for a polar code based at least in part on an aggregate resource size associated with the sequential transmissions. The device may identify an adjusted bit index set for the polar code based at least in part on the IR-HARQ scheme. The device may transmit (or receive), for each transmission of the information bit vector, a respective subset of encoded bits generated by mapping the information bit vector to a set of polarized bit channels of the polar code in accordance with the bit index set.

公开(公告)号：US20210105089A1

公开(公告)日：2021-04-08

申请号：US15733499

申请日：2019-01-17

Applicant: Kai CHEN ,  Liangming WU ,  Changlong XU ,  Jian UI ,  Hao XU ,  QUALCOMM Incorporated

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

IPC: H04L1/00 ,  H04L1/18

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless communication device may perform a first polar code encoding process on a first transmission of a hybrid automatic repeat request (HARQ) process; generate a second transmission of the HARQ process by relocating a portion of bits in less reliable positions of the first transmission to more reliable positions of the second transmission of the HARQ process, wherein the less reliable positions and the more reliable positions are evaluated based at least in part on a channel transform, wherein the channel transform is based at least in part on the first transmission, the second transmission, the first polar encoding process and a second polar encoding process associated with the second transmission; and transmit the second transmission of the HARQ process. Numerous other aspects are provided.

公开(公告)号：US20210105085A1

公开(公告)日：2021-04-08

申请号：US17122909

申请日：2020-12-15

Applicant: QUALCOMM Incorporated

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

IPC: H04L1/00 ,  H04L1/18

Abstract: Aspects of the present disclosure provide techniques for enhanced transmission time interval (TTI) bundling design for machine type communications (MTC). A method for wireless communications by a wireless device is provided. The method generally includes determining a mapping of one or more uplink or downlink channels to one or more fixed bundling sizes, wherein each of the one or more fixed bundling sizes indicates a number of transmission time intervals (TTIs) over which a channel should be transmitted and processing transmission of the one or more uplink or downlink channels based on the mapping.