公开(公告)号：US11743872B2

公开(公告)日：2023-08-29

申请号：US17392230

申请日：2021-08-02

Applicant: QUALCOMM Incorporated

Inventor： Seyed Ali Akbar Fakoorian ,  Alberto Rico Alvarino ,  Peter Gaal ,  Wanshi Chen ,  Yongbin Wei ,  Juan Montojo ,  Renqiu Wang ,  Hao Xu ,  Xiaofeng Wang

IPC: H04W72/0446 ,  H04L5/00 ,  H04L27/20

CPC classification number: H04W72/0446 ,  H04L5/0046 ,  H04L5/0048 ,  H04L27/2078

Abstract: Aspects of the present disclosure provide techniques for uplink (UL) data channel design. An example method is provided for operations which may be performed by a first apparatus. The example method generally comprises determining a number of pilot symbols to transmit for one or more slots of a first subframe based, at least in part, on a coverage enhancement (CE) level, and transmitting at least one uplink data channel having the determined number of pilot symbols in the one or more slots of the first subframe.

公开(公告)号：US20230247623A1

公开(公告)日：2023-08-03

申请号：US18004531

申请日：2020-08-14

Applicant: QUALCOMM Incorporated

Inventor： Chenxi Hao ,  Yu Zhang ,  Chao Wei ,  Fang Yuan ,  Liangming Wu ,  Wanshi Chen ,  Hao Xu

IPC: H04W72/1268 ,  H04W72/02 ,  H04W72/21

CPC classification number: H04W72/1268 ,  H04W72/02 ,  H04W72/21

Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for transmitting a channel state information (CSI) report from a user equipment (UE). The CSI report may be a UE initiated CSI report or may be based on a downlink grant. The UE may determine to transmit the CSI report in response to a measurement of a CSI measurement resource or in response to a downlink grant requesting the CSI. The UE may determine a reserved uplink resource to carry the CSI based at least in part on configurations associated with the CSI report. The UE may transmit the CSI report on the determined uplink resource.

公开(公告)号：US11700598B2

公开(公告)日：2023-07-11

申请号：US17374627

申请日：2021-07-13

Applicant: QUALCOMM Incorporated

Inventor： Alberto Rico Alvarino ,  Peter Gaal ,  Xiao Feng Wang ,  Wanshi Chen ,  Seyed Ali Akbar Fakoorian ,  Hao Xu ,  Renqiu Wang ,  Jing Lei

IPC: H04W72/0453 ,  H04L5/00 ,  H04W72/543 ,  H04W4/70 ,  H04W88/02 ,  H04W88/08

CPC classification number: H04W72/0453 ,  H04L5/0048 ,  H04L5/0053 ,  H04L5/0092 ,  H04W4/70 ,  H04W72/543 ,  H04W88/02 ,  H04W88/08

Abstract: Aspects of the present disclosure provide techniques for design of channel raster for narrowband operation. One example method, performed by a base station, generally includes determining, based on one or more conditions, an exact frequency location of one channel of one or more channels to perform narrowband communications with a user equipment. The method also includes transmitting an indication of the one or more conditions to the user equipment. The method further includes communicating with the UE, based at least in part on the exact frequency location of the one channel.

公开(公告)号：US11683837B2

公开(公告)日：2023-06-20

申请号：US16703438

申请日：2019-12-04

Applicant: QUALCOMM Incorporated

Inventor： Madhavan Srinivasan Vajapeyam ,  Hao Xu ,  Peter Gaal ,  Wanshi Chen ,  Alberto Rico Alvarino ,  Seyed Ali Akbar Fakoorian

IPC: H04W74/08 ,  H04W4/70 ,  H04L67/12 ,  H04L67/56 ,  H04W52/28 ,  H04W74/00

CPC classification number: H04W74/0833 ,  H04L67/12 ,  H04L67/56 ,  H04W4/70 ,  H04W52/281 ,  H04W74/008

Abstract: Certain aspects of the present disclosure generally relate to wireless communications, and more specifically to random access procedures and/or prioritization of broadcast transmissions in machine type communications (MTC) devices and enhanced MTC (eMTC). An example method generally includes determining a plurality of subframes in which the UE may transmit a bundled random access channel (RACH) message to a base station (BS), determining, within the subframes, at least one narrowband region for transmitting the bundled RACH message, determining a bundling size for the bundled RACH message, the bundling size indicating a number of the plurality of subframes in which the bundled RACH message is transmitted, and transmitting the bundled RACH message in the narrowband region of the plurality of subframes, based at least in part on the determined bundling size.

公开(公告)号：US11646830B2

公开(公告)日：2023-05-09

申请号：US17054917

申请日：2019-05-28

Applicant: Qualcomm Incorporated

Inventor： Kai Chen ,  Jian Li ,  Changlong Xu ,  Liangming Wu ,  Hao Xu

IPC: H04L1/18 ,  H04L1/00 ,  H04L5/00 ,  H04L1/1812 ,  H04L1/1829

CPC classification number: H04L1/1819 ,  H04L1/0057 ,  H04L1/0069 ,  H04L1/1861 ,  H04L5/0051

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：US11637593B2

公开(公告)日：2023-04-25

申请号：US15202901

申请日：2016-07-06

Applicant: QUALCOMM Incorporated

Inventor： Renqiu Wang ,  Hao Xu ,  Wanshi Chen ,  Peter Gaal ,  Yongbin Wei

IPC: H04W72/04 ,  H04B7/04 ,  H04W4/70 ,  H04L5/00 ,  H04B17/382 ,  H04L47/70 ,  H04W28/02 ,  H04B7/06 ,  H03M13/15 ,  H04W88/02

Abstract: Certain aspects of the present disclosure generally relate to wireless communications, and more specifically increasing user capacity through a frame structure which supports enhanced Machine Type Communication (eMTC) UL multi-user multiplexing. For example, a User Equipment (UE) identifies at least one narrowband region within a wider system bandwidth. The UE receives signaling, from a base station, indicating a sub-region of the narrowband region assigned to the UE for transmitting symbols of a physical uplink channel that are multiplexed with symbols transmitted by one or more other UEs in the narrowband region. The UE transmits the physical uplink channel in the assigned sub-region. Similar techniques are also provided that may be applied to DL multi-user multiplexing.

公开(公告)号：US11595097B2

公开(公告)日：2023-02-28

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: H04B7/02 ,  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：US11581999B2

公开(公告)日：2023-02-14

申请号：US14876678

申请日：2015-10-06

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Michael Mao Wang ,  Hao Xu ,  Yongbin Wei ,  Peter Gaal

IPC: H04L5/00 ,  H04W4/70 ,  H04W72/00

Abstract: Methods, systems, and devices are described for reference signal design in wireless communications. A base station may select a reference signal density scheme from a set of available density schemes associated with a port count. The reference signal density scheme may also be selected based on the category of the mobile device receiving the reference signal transmissions. The reference signal density scheme may be a higher density reference signal density scheme or a lower density reference signal density scheme, where the higher density reference signal density scheme includes more reference signal resource elements per subframe. The mobile device may determine the reference signal density scheme based on characteristics of a channel. The higher density reference signal density scheme may provide additional channel estimation opportunities for the mobile device. In some cases, the mobile device sends the channel estimated based on the received reference signals to the base station.

公开(公告)号：US11570597B2

公开(公告)日：2023-01-31

申请号：US15397934

申请日：2017-01-04

Applicant: QUALCOMM Incorporated

Inventor： Seyed Ali Akbar Fakoorian ,  Peter Gaal ,  Alberto Rico Alvarino ,  Xiaofeng Wang ,  Wanshi Chen ,  Renqiu Wang ,  Hao Xu

IPC: H04W4/70 ,  H04W72/08 ,  H04L5/00 ,  H04L27/26 ,  H04B7/06 ,  H04L25/02

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for pilot design for Narrow-Band Internet of Things (NB-IoT). In certain aspects, the method generally includes determining at least one binary code sequence to use as a demodulation reference signal (DMRS) for a channel transmitted across one or more subframes using one or more tones within a resource block (RB) allocated to the UE for narrowband communication, and transmitting the channel including the DMRS using the one or more tones and the determined binary code sequence. In certain aspects, the binary code sequence may be determined based on a binary random sequence, such as pseudo noise (PN) or Gold sequence.

公开(公告)号：US11516823B2

公开(公告)日：2022-11-29

申请号：US17250210

申请日：2019-06-06

Applicant: QUALCOMM Incorporated

Inventor： Chao Wei ,  Alberto Rico Alvarino ,  Le Liu ,  Umesh Phuyal ,  Wanshi Chen ,  Hao Xu

IPC: H04W72/12 ,  H04B1/713 ,  H04L5/00 ,  H04W68/00 ,  H04W72/04

Abstract: Some techniques and apparatuses described herein allocate and/or transmit a narrower bandwidth value for LTE MTC UEs, such as UEs that operate in a small bandwidth mode using LTE procedures, and allocate and/or transmit a wider bandwidth value for 5G MTC UEs, such as UEs that can perform hopping and/or be allocated resources outside of a legacy bandwidth. For example, the wider bandwidth value may be associated with a non-LTE carrier (e.g., a 5G carrier in a 5G bandwidth) with the same center frequency as an LTE carrier associated with the narrower bandwidth value. Some techniques and apparatuses described herein provide for initial access, signaling, paging, random access, unicast communications, frequency hopping, cell-specific reference signaling, narrowband alignment, and/or other coexistence considerations for LTE MTC UEs operating on an LTE carrier and 5G MTC UEs operating on a non-LTE carrier with a bandwidth that includes the LTE carrier.