公开(公告)号：US11229018B2

公开(公告)日：2022-01-18

申请号：US16922794

申请日：2020-07-07

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Peter Gaal ,  Hao Xu

IPC: H04W72/04 ,  H04L1/18 ,  H04W4/70 ,  H04L5/14 ,  H04L5/00

Abstract: Methods, systems, and devices are described for wireless communication at a device. A wireless device may be configured with a transmission time interval (TTI) bundling parameter. The device may then identify one or more resources for an uplink (UL) control channel based on the TTI bundling parameter (e.g., using either an implicit or an explicit indication from another wireless node such as a serving cell of a base station) and transmit the UL control channel using the identified resources. The device may also identify a downlink control information (DCI) format based on the TTI bundling parameter. For example, a resource allocation granularity level may be associated with the bundling parameter, and the length of a DCI field may depend on the resource allocation granularity level.

公开(公告)号：US11212801B2

公开(公告)日：2021-12-28

申请号：US16686887

申请日：2019-11-18

Applicant: QUALCOMM Incorporated

Inventor： Alberto Rico Alvarino ,  Wanshi Chen ,  Hao Xu ,  Seyed Ali Akbar Fakoorian

IPC: H04W72/04 ,  H04W4/70 ,  H04B1/713 ,  H04B1/7156

Abstract: Aspects of the present disclosure provide a method performed by a wireless device. The method generally includes identifying one or more narrowband regions within a wider system bandwidth, based on an amount of available resources in the system bandwidth, and communicating using at least one of the identified narrowband regions.

公开(公告)号：US11196444B2

公开(公告)日：2021-12-07

申请号：US16760758

申请日：2018-09-21

Applicant: QUALCOMM Incorporated

Inventor： Kai Chen ,  Liangming Wu ,  Changlong Xu ,  Jing Jiang ,  Hao Xu

IPC: H03M13/09 ,  H03M13/00 ,  H03M13/15 ,  H04L1/00

Abstract: Certain aspects of the present disclosure generally relate to techniques for encoding and decoding bits of information using cyclic redundancy check (CRC) concatenated polar encoding and decoding. The CRC concatenated polar encoding techniques may avoid transmission of dummy bits. A method generally includes obtaining the bits of information to be transmitted. The method includes performing CRC outer encoding of the bits of information using an even-weighted generator polynomial to produce CRC encoded bits. The method includes performing polar inner encoding of the CRC encoded bits to generate a codeword. The method includes discarding a first code bit at a beginning of the codeword. The shortened codeword is transmitted over a wireless medium. In another method, bit-level scrambling is performed on the CRC encoded bits before the polar encoding to avoid generating a dummy bit. In another method, only odd-weighted generator polynomials are selected to avoid generating the dummy bit.

公开(公告)号：US20210376876A1

公开(公告)日：2021-12-02

申请号：US17444988

申请日：2021-08-12

Applicant: QUALCOMM Incorporated

Inventor： KAPIL BHATTAD ,  Hao Xu ,  Alberto Rico Alvarino ,  Peter Gaal ,  Masato Kitazoe ,  Sharad Sambhwani

IPC: H04B1/713 ,  H04L5/00 ,  H04W4/70 ,  H04L1/00 ,  H04W68/00 ,  H04W76/27

Abstract: Coverage enhancements and coverage mode switching related optimizations are discussed for user equipments (UEs) that may switch between various coverage extension (CE) and non-CE modes of operation. In such enhancements, paging uncertainty and delays may be reduced by sending pages either simultaneously or using historical information over multiple coverage modes available to UEs. Random access procedures may be improved by providing CE mode random access procedures that are available when normal mode random access attempts fail and before declaring radio link failure. Additional aspects include improvements for more advanced UEs to improve coverage within normal mode operations by leveraging techniques used for narrowband CE mode operations, including transmission repetition and gapless transmission scheduling over hopped narrowband frequencies.

公开(公告)号：US11178650B2

公开(公告)日：2021-11-16

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：US11177923B2

公开(公告)日：2021-11-16

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：US11159289B2

公开(公告)日：2021-10-26

申请号：US16449249

申请日：2019-06-21

Applicant: QUALCOMM Incorporated

Inventor： Alberto Rico Alvarino ,  Wanshi Chen ,  Peter Gaal ,  Jing Sun ,  Hao Xu ,  Srinivas Yerramalli

IPC: H04L5/00 ,  H04L5/14 ,  H04W72/04 ,  H04W56/00

Abstract: An apparatus may use inactive uplink portions of a downlink CC to transmit SRS to an eNB. At times there may be a collision between the SRS transmission and uplink transmissions or downlink transmissions on another CC. The apparatus receives a carrier aggregation configuration for a first downlink CC and a second CC, determines to transmit an uplink transmission on the second CC or to receive a downlink transmission on the second CC, determines that the SRS would at least partially collide with the uplink transmission or the downlink transmission, and determines to adjust at least one of the uplink transmission, the SRS transmission, or reception of the downlink transmission based on the determination of the collision and an interruption time to transmit the SRS in the uplink portion of the first CC.

公开(公告)号：US11140714B2

公开(公告)日：2021-10-05

申请号：US15619094

申请日：2017-06-09

Applicant: QUALCOMM Incorporated

Inventor： Alberto Rico Alvarino ,  Peter Gaal ,  Wanshi Chen ,  Hao Xu ,  Jing Sun

IPC: H04W74/08 ,  H04L5/00 ,  H04W52/32 ,  H04W72/04 ,  H04W52/34

Abstract: Certain aspects of the disclosure relate to techniques and apparatus for improving random access for SRS switching in a wireless network. Prior to transmitting a SRS, a UE may interrupt communication on a first carrier to switch from the first carrier to a second carrier to transmit a PRACH. To reduce interruption to the first carrier, the UE may use the beginning symbol(s) of a UpPTS on the second carrier to transmit the PRACH. In addition, to reduce interruption to the first carrier, the UE may monitor for another PDCCH order before transmitting another PRACH. Further, aspects of the present disclosure provide techniques and apparatus for jointly triggering SRS transmissions and performing power control for SRS transmissions. A BS may trigger SRS transmissions from multiple UEs, trigger SRS transmissions from multiple carriers from the same UE at the same time and/or perform power control separately for each carrier.

公开(公告)号：US11134483B2

公开(公告)日：2021-09-28

申请号：US16815989

申请日：2020-03-11

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Peter Gaal ,  Shimman Arvind Patel ,  Hao Xu

IPC: H04W72/04 ,  H04L5/00 ,  H04L1/16 ,  H04W72/14 ,  H04L1/18

Abstract: Various aspects described herein relate to communicating in a wireless network. A transmission time interval (TTI) for an uplink control channel transmission within a subframe is determined, wherein the TTI comprises of a number of symbols which are a subset of a plurality of symbols in the subframe. Uplink control data can be transmitted over the uplink control channel during the TTI.

公开(公告)号：US11122535B2

公开(公告)日：2021-09-14

申请号：US15646730

申请日：2017-07-11

Applicant: QUALCOMM Incorporated

Inventor： Renqiu Wang ,  Wanshi Chen ,  Hao Xu ,  Alberto Rico Alvarino ,  Peter Gaal

IPC: H04W64/00 ,  H04W4/70 ,  H04B17/318 ,  H04L5/00 ,  H04W74/00

Abstract: Certain aspects of the present disclosure generally relate to DL-based and UL-based positioning reference signal (PRS) techniques that may help facilitate positioning procedures in systems deploying narrowband devices, such as NB-IoT devices. An exemplary method includes determining resources within a narrowband region of a wider system bandwidth for transmitting a positioning reference signal (PRS), transmitting the PRS using the determined resources, and estimating a position of a wireless node based on at least one first measurement of a first reference signal and the PRS transmitted within a narrowband region.