公开(公告)号：US20210067213A1

公开(公告)日：2021-03-04

申请号：US17097071

申请日：2020-11-13

Applicant: QUALCOMM Incorporated

Inventor： Hao XU ,  Peter GAAL ,  Wanshi CHEN ,  Seyed Ali Akbar FAKOORIAN

IPC: H04B7/0456 ,  H04W4/70 ,  H04L1/02

Abstract: Certain aspects of the present disclosure generally relate to wireless communications, and more specifically to increased diversity for devices with limited communications resources. An example method generally includes transmitting data as a bundled transmission to a device with limited communications resources, the bundled transmission comprising multiple bursts wherein each burst spans a plurality of transmission time intervals (TTIs) and the same data is transmitted in each burst, and taking action to increase diversity (e.g., at least one of spatial diversity, time diversity, frequency diversity, etc.) for the bundled transmission.

公开(公告)号：US20200252962A1

公开(公告)日：2020-08-06

申请号：US16853652

申请日：2020-04-20

Applicant: QUALCOMM Incorporated

Inventor： Madhavan Srinivasan VAJAPEYAM ,  Hao XU ,  Wanshi CHEN

IPC: H04W74/00 ,  H04W74/08 ,  H04L5/14 ,  H04W24/08 ,  H04W72/04 ,  H04W72/08

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may select a coverage enhancement (CE) level based on a coverage limitation. The UE may then receive system information from a base station indicating an index of CE levels and corresponding physical random access channel (PRACH) configurations, and the UE may transmit a random access preamble using the PRACH configuration for the selected CE level. For example, the UE may transmit the preamble based on a frequency offset that corresponds to the selected CE level. In some cases, the UE and base station may also associate groups of preambles with downlink (DL) CE levels. The UE may select a preamble from a group corresponding to a desired DL CE level for a random access response message. The base station may determine the DL CE level based on the group the preamble was selected from and respond accordingly.

公开(公告)号：US20200245171A1

公开(公告)日：2020-07-30

申请号：US16847814

申请日：2020-04-14

Applicant: QUALCOMM Incorporated

Inventor： Hao XU ,  Wanshi CHEN ,  Madhavan Srinivasan VAJAPEYAM ,  Peter GAAL

IPC: H04W24/08 ,  H04W72/04 ,  H04W4/70

Abstract: Aspects of the present disclosure provided techniques that may be applied in systems to allow for communication over a control channel utilizing a relatively narrowband (e.g., six physical resource blocks) based search space. An exemplary method, performed, for example, by a machine type communication (MTC) UE, generally includes identifying, within a subframe, a first search space to monitor for a control channel that occupies a first number of physical resource blocks (PRBs) that represents a narrowband within a system bandwidth comprising a plurality of narrowbands and monitoring at least the first search space for the control channel, wherein the control channel comprises broadcast control information.

公开(公告)号：US20200229168A1

公开(公告)日：2020-07-16

申请号：US16837629

申请日：2020-04-01

Applicant: QUALCOMM Incorporated

Inventor： Wanshi CHEN ,  Hao XU ,  Michael Mao WANG ,  Peter GAAL

IPC: H04W72/04 ,  H04W28/02 ,  H04W24/08 ,  H04W4/70 ,  H04L5/00

Abstract: Aspects of the present disclosure provide techniques that may be applied in systems to allow for communication over a control channel utilizing a relatively narrow band (e.g., six physical resource blocks) based search space. An exemplary method, performed by a user equipment, generally includes identifying, within a subframe, a first search space to monitor for a downlink control channel that occupies a first number of physical resource blocks (PRBs) that represents a narrowband size and monitoring at least the first search space for the downlink control channel transmitted in the subframe.

公开(公告)号：US20200214019A1

公开(公告)日：2020-07-02

申请号：US16816404

申请日：2020-03-12

Applicant: QUALCOMM Incorporated

Inventor： Wanshi CHEN ,  Shimman Arvind Patel ,  Peter GAAL ,  Hao XU ,  Yongbin WEI ,  Madhavan Srinivasan VAJAPEYAM ,  Aleksandar DAMNJANOVIC

IPC: H04W72/10 ,  H04L1/00 ,  H04W72/12 ,  H04W72/04 ,  H04W72/00 ,  H04L5/00

Abstract: Various aspects described herein relate to receiving a first communication over a first set of resources based on a first transmission time interval (TTI), receiving a second communication over a second set of resources based on a second TTI, where the second TTI is smaller than the first TTI, and where the second set of resources overlap the first set of resources defining a common set of resources, and determining whether to prioritize decoding of the first communication over the second communication.

公开(公告)号：US20200169370A1

公开(公告)日：2020-05-28

申请号：US16630110

申请日：2018-06-25

Applicant: QUALCOMM Incorporated

Inventor： Peng CHENG ,  Wanshi CHEN ,  Hao XU ,  Umesh PHUYAL ,  Alberto RICO ALVARINO ,  Chao WEI

IPC: H04L5/00 ,  H04W72/04

Abstract: In an example, a method of wireless communication of a base station may include assigning, by the base station, one or more resources to a group comprising a plurality of UEs that includes a first UE. The method may include receiving, by the base station from the first UE, a message on the one or more assigned resources. The message may include a cyclic redundancy check (CRC) scrambled with a group identifier for the group comprising the plurality of UEs. The message may include an indication of a UE identifier for the first UE within the group. The message may include a DMRS, where the indication of the UE identifier is represented by a sequence of the DMRS.

公开(公告)号：US20200100245A1

公开(公告)日：2020-03-26

申请号：US16698521

申请日：2019-11-27

Applicant: QUALCOMM Incorporated

Inventor： Hao XU ,  Peter GAAL ,  Aleksandar DAMNJANOVIC ,  Wanshi CHEN ,  Yongbin WEI ,  Durga Prasad MALLADI

IPC: H04W72/04 ,  H04W72/12 ,  H04L1/16

Abstract: Certain aspects of the present disclosure provide techniques that may be used to help enable low latency communications between a user equipment (UE) and a base station (BS) using quick uplink channels that enable a reduced transmission time interval (TTI). Additionally, certain aspects of the present disclosure provide techniques for managing communications in a wireless communication system, for example, by using enhanced downlink control channels.

公开(公告)号：US20200076547A1

公开(公告)日：2020-03-05

申请号：US16678910

申请日：2019-11-08

Applicant: Qualcomm Incorporated

Inventor： Renqiu WANG ,  Wanshi CHEN ,  Hao XU ,  Peter GAAL ,  Tao LUO ,  Sony Akkarakaran

IPC: H04L1/18 ,  H04W72/02 ,  H04L5/00 ,  H04B7/06 ,  H04W72/12 ,  H04W72/04 ,  H04L1/12

Abstract: A method and apparatus for enabling an UE to selecting acknowledgement/non-acknowledgement (ACK/NACK) resources from a subset of a gNB resource pool. The example method may receive, from an gNB, a radio resource control (RRC) configuration indicating a UE-specific resource set that is a subset of a gNB resource pool. The UE may determine one or more ACK/NACK resources from the UE-specific resource set for an upcoming physical uplink control channel (PUCCH). In some aspects, the UE may determine the one or more ACK/NACK resources based on receiving, from the gNB, a physical downlink control channel (PDCCH) including a corresponding ACK/NACK resource configuration. In other aspects, the RRC may contain multiple resource subsets and the UE may determine the one or more ACK/NACK resources based on determining a size of a payload for a UCI to be transmitted on the PUCCH. The aspects may thus enable dynamic ACK/NACK resource allocation.

公开(公告)号：US20200007375A1

公开(公告)日：2020-01-02

申请号：US16467872

申请日：2018-01-06

Applicant: Yu ZHANG ,  Chao WEI ,  Hao XU ,  Wanshi CHEN ,  Wei ZENG ,  QUALCOMM Incorporated

Inventor： Yu ZHANG ,  Chao WEI ,  Hao XU ,  Wanshi CHEN ,  Wei ZENG

IPC: H04L27/26 ,  H04L25/02 ,  H04L5/00

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for transmitting sounding reference signals (SRS) in communications systems operating according to new radio (NR) technologies. An exemplary method that a user equipment (UE) may perform includes determining whether to transmit a sounding reference signal (SRS) using a discrete Fourier transform (DFT) spread orthogonal frequency domain multiplexing (DFT-S-OFDM) waveform or a cyclic prefix orthogonal frequency domain multiplexing (CP-OFDM) waveform, and transmitting the SRS using the determined waveform.

公开(公告)号：US20190342913A1

公开(公告)日：2019-11-07

申请号：US16510649

申请日：2019-07-12

Applicant: QUALCOMM Incorporated

Inventor： Renqiu WANG ,  Wanshi CHEN ,  Hao XU ,  Hung LY ,  Heechoon LEE

IPC: H04W74/00

Abstract: Wireless communication devices are adapted to facilitate a random access procedure. According to one example, scheduled entity can transmit a first transmission that is received by a scheduling entity. The first transmission may include a physical random access channel (PRACH) preamble sequence and a first message including information for determining a device-specific network identifier for the scheduled entity. The scheduling entity may transmit a second transmission that is received by the scheduled entity. The second transmission may include information on a physical downlink control channel (PDCCH) addressed to the device-specific network identifier for the scheduled entity, and a second message on a physical downlink shared channel (PDSCH). Other aspects, embodiments, and features are also included.