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：US11723018B2

公开(公告)日：2023-08-08

申请号：US16177858

申请日：2018-11-01

Applicant: QUALCOMM Incorporated

Inventor： Renqiu Wang ,  Yi Huang

IPC: H04W72/12 ,  H04L5/00 ,  H04W72/04 ,  H04W72/1268 ,  H04W72/20 ,  H04W72/23

CPC classification number: H04W72/1268 ,  H04L5/0055 ,  H04W72/20 ,  H04W72/23

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for resource allocation for physical uplink control channel (PUCCH) used to carry uplink control information (UCI). Certain aspects provide a method for wireless communication by a user equipment. The method generally includes receiving downlink control information (DCI) comprising one or more resource indicator (RI) bits configured to indicate to the user equipment a subset of resources available for transmitting UCI in a PUCCH transmission, wherein the DCI is received on one or more resources of a first physical downlink control channel (PDCCH) transmission. The method further includes identifying resources within the subset indicated by the RI bits to transmit the UCI based on an implicit mapping of PDCCH resources to PUCCH resources and the one or more resources of the first PDCCH transmission. The method further includes transmitting the UCI using the identified resources.

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：US20230155872A1

公开(公告)日：2023-05-18

申请号：US18156199

申请日：2023-01-18

Applicant: QUALCOMM Incorporated

Inventor： Yiqing Cao ,  Wanshi Chen ,  Jing Lei ,  Renqiu Wang

IPC: H04L27/26 ,  H04L5/00 ,  H04L25/02 ,  H04W72/044

CPC classification number: H04L27/2602 ,  H04L5/0048 ,  H04L25/0202 ,  H04W72/0466 ,  H04L27/26025 ,  H04L27/261

Abstract: Methods, systems, and devices for wireless communications are described. In some systems (e.g., non-orthogonal multiple access (NOMA) systems), a base station may serve a large number of user equipments (UEs) on the uplink. To improve detectability for these uplink transmissions (e.g., if reference signals are not available for the transmissions), the UEs may implement parallel transmissions of preambles with uplink data. A UE may split the uplink data into one or more data layers, and may select one or more preamble layers to transmit superposed with the data layers. These preambles may be sequences known to both the UE and the base station to aid in detectability. The UE may assign different signature sequences to each of these layers based on cross-correlation values (e.g., assigning sequences with higher cross-correlation values to the data layers for improved detectability), and may scramble the layers into a single shared signal for transmission.

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：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：US11563517B2

公开(公告)日：2023-01-24

申请号：US16937504

申请日：2020-07-23

Applicant: QUALCOMM Incorporated

Inventor： Hung Dinh Ly ,  Renqiu Wang ,  Krishna Kiran Mukkavilli ,  Huilin Xu ,  Seyedkianoush Hosseini ,  Tingfang Ji ,  Peter Pui Lok Ang ,  Alberto Rico Alvarino ,  Le Liu ,  Jing Lei ,  Peter Gaal

IPC: H04L1/00 ,  H04W72/00 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive signaling that configures a downlink bandwidth for a broadcast channel transmission (e.g., a physical downlink control channel transmission). The UE may determine a bandwidth of the capability is less than the downlink bandwidth, and monitor search space occasions in a period to receive samples of the broadcast channel. The period and the search space occasions may be associated with a control resource set and a search space set. The UE may receive the samples in non-overlapping subbands of the bandwidth according to the bandwidth capability, and detect the broadcast channel based on the samples. The UE may additionally monitor repeated transmission occasions in the period based on detecting the broadcast channel to detect a second broadcast channel (e.g., a physical downlink shared channel).

公开(公告)号：US20230006801A1

公开(公告)日：2023-01-05

申请号：US17868590

申请日：2022-07-19

Applicant: QUALCOMM Incorporated

Inventor： Yi Huang ,  Wanshi Chen ,  Peter Gaal ,  Renqiu Wang ,  Wei Yang

IPC: H04L5/00 ,  H04W72/12 ,  H04L5/26 ,  H04W72/14

Abstract: Methods, systems, and devices for wireless communications are described for controlling multiplexing of a reference signal on an uplink shared channel (UL-SCH). In an implementation, a user equipment (UE) may time division multiplex (TDM) a demodulation reference signal (DMRS) with other signaling across symbol periods of one or more allocated resource blocks. The UE may map the DMRS to resource elements of one or more symbol periods within the allocated resource blocks. The UE may then map uplink control information (UCI) to one or more symbol periods different than the symbol periods of the DMRS mapping. In some cases, the DMRS, UCI, or both may be frequency interleaved with UL-SCH data for the allocated resource blocks. The UE may generate and transmit an uplink waveform for transmission within the allocated resources of the uplink shared channel.

公开(公告)号：US20220303042A1

公开(公告)日：2022-09-22

申请号：US17715609

申请日：2022-04-07

Applicant: QUALCOMM Incorporated

Inventor： Renqiu Wang ,  Yi Huang

IPC: H04L1/00 ,  H04L1/18 ,  H04W72/04 ,  H04L5/00 ,  H04B7/06 ,  H04W72/14 ,  H04L1/16

Abstract: Methods, systems, and devices for wireless communications are described. In some cases, randomized shifts of a base sequence may be used for transmitting uplink control information. For example, a user equipment (UE) may identify a base sequence of an uplink control message. The UE may also receive signaling that indicates a UE-specific initial shift that may be applied to the base sequence. In some examples, the signaling that indicates the randomized shift may be explicit, implicit, or a combination thereof. After determining one or more shifted sequences based on the UE-specific initial shift, a payload of the uplink control message, and the base sequence, the UE may select a shifted sequence to be transmitted, where the selection is based on a payload of the uplink control message. For example, different shifted sequences may be selected for respective transmissions of scheduling requests, 1-bit acknowledgments (ACKs), 2-bit ACKs, and the like.