公开(公告)号：US12232186B2

公开(公告)日：2025-02-18

申请号：US17774831

申请日：2020-10-27

Applicant: Qualcomm Incorporated

Inventor： Kapil Bhattad ,  Xiaoxia Zhang ,  Jing Sun ,  Ananta Narayanan Thyagarajan ,  Tanumay Datta

IPC: H04W74/0833 ,  H04L27/26 ,  H04W72/1268 ,  H04W72/23

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may indicate support of an extended cyclic prefix (ECP), where a duration of the ECP or transmitting the ECP is based on the indication. In some cases, the UE may receive an uplink grant to transmit an uplink message with an indication of the ECP, and the UE may transmit the ECP and uplink message according to a timeline based in part on the ECP. Additionally or alternatively, an uplink channel allocation indicated in the uplink grant may include a starting point for the ECP, where the UE transmits the ECP at the starting point. In some cases, the UE may multiplex uplink control information (UCI) in the uplink channel based on a timeline that is based in part on the ECP.

公开(公告)号：US12166610B2

公开(公告)日：2024-12-10

申请号：US17558015

申请日：2021-12-21

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Kapil Bhattad ,  Jing Sun ,  Seyed Ali Akbar Fakoorian

IPC: H04L27/26 ,  H04L5/00 ,  H04W72/02 ,  H04W72/21 ,  H04W52/34 ,  H04W52/50 ,  H04W72/0453

Abstract: Wireless communications systems and methods related to improving multiplexing capability in a frequency spectrum are provided. A first wireless communication device obtains a configuration for communicating a communication signal in a frequency spectrum. The configuration is based on at least a number of wireless communication devices scheduled to communicate in a time period. The configuration indicates resources in the frequency spectrum over the time period and a frequency distribution mode of the resources. The first wireless communication device communicates, with a second wireless communication device, the communication signal in the frequency spectrum during the time period based on the configuration.

公开(公告)号：US12149279B2

公开(公告)日：2024-11-19

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: H04L1/00 ,  H04B1/713 ,  H04L5/00 ,  H04W4/70 ,  H04W68/00 ,  H04W76/27 ,  H04B1/7156 ,  H04W68/02 ,  H04W68/04 ,  H04W74/0833 ,  H04W88/06

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：US12143970B2

公开(公告)日：2024-11-12

申请号：US16815849

申请日：2020-03-11

Applicant: QUALCOMM Incorporated

Inventor： Kapil Bhattad ,  Jing Sun ,  Xiaoxia Zhang ,  Ananta Narayanan Thyagarajan

IPC: H04W72/0446 ,  H04W16/14 ,  H04W74/0808

Abstract: Configurations for configured grant (CG) in new radio unlicensed (NR-U) systems is disclosed. CG configurations may, based on a periodicity, be provided either using a bitmap, shorter periodicity, or resource indicator value (RIV) signaling of start/end symbols, longer periodicity. Such CG configurations configure M sets of time division resource allocations. CG configuration may include common start/end symbols from for all contiguous allocations in one configuration. Common LBT starting points may be defined for all configured slots as indicated through a bitmap. The CG configuration allows for mini- and full slot configurations, in which the mini-slots are configured within the already configured CG slots. Repetition configurations include a type 1 for coverage and a type 2 for faster retransmission and reduced downlink feedback information (DFI) overhead. With multiple UEs, a UE identifier is added to the uplink control information (UCI). UEs may further ramp up power in the absence of DFI.

公开(公告)号：US12028186B2

公开(公告)日：2024-07-02

申请号：US17060298

申请日：2020-10-01

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Xiaoxia Zhang ,  Kapil Bhattad ,  Tanumay Datta

IPC: H04L12/28 ,  H04L5/00 ,  H04L25/02 ,  H04L27/26 ,  H04W74/0808 ,  H04J1/16

CPC classification number: H04L25/0226 ,  H04L5/0007 ,  H04L5/0048 ,  H04L5/0051 ,  H04L27/2605 ,  H04L27/2613 ,  H04W74/0808 ,  H04L27/26132

Abstract: Techniques and devices for wireless communications are described that provide for staggering sounding reference signal (SRS) transmissions in frequency across multiple orthogonal frequency division multiplexing (OFDM) symbols, which may allow multiple UEs to transmit SRS using a common listen-before-talk (LBT) gap for a LBT procedure. The techniques also provide for transmitting an SRS across multiple OFDM symbols using same frequency resources, and an orthogonal cover code (OCC) may be applied to the SRS transmission of each OFDM symbol, which may allow multiple UEs to transmit concurrent SRS using a common LBT gap.

公开(公告)号：US11974136B2

公开(公告)日：2024-04-30

申请号：US16927883

申请日：2020-07-13

Applicant: QUALCOMM INCORPORATED

Inventor： Kapil Bhattad ,  Tanumay Datta ,  Ananta Narayanan Thyagarajan ,  Brahim Saadi ,  Xiaoxia Zhang ,  Jing Sun

IPC: H04W72/12 ,  H04L27/26 ,  H04W16/14 ,  H04W72/121 ,  H04W72/21 ,  H04W72/23

CPC classification number: H04W16/14 ,  H04L27/2607 ,  H04L27/2613 ,  H04L27/2628 ,  H04W72/121 ,  H04W72/21 ,  H04W72/23

Abstract: Wireless communications systems and methods related to uplink control channel transmissions with user multiplexing and reference signal transmissions are provided. A first wireless communication device obtains an uplink control channel multiplex configuration. The first wireless communication device communicates, with a second wireless communication device, a grant indicating a plurality of resource blocks spaced apart from each other by at least one other resource block in a shared radio frequency band, the plurality of resource blocks scheduled for multiple wireless communication devices based on the uplink control channel multiplex configuration. The first wireless communication device communicates, with the second wireless communication device, a first uplink control channel signal in one or more of the plurality of resource blocks based on the uplink control channel multiplex configuration.

公开(公告)号：US11930507B2

公开(公告)日：2024-03-12

申请号：US17589521

申请日：2022-01-31

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Zhifei Fan ,  Kapil Bhattad ,  Jing Sun ,  Tamer Kadous ,  Srinivas Yerramalli

IPC: H04W72/23 ,  H04L1/1607 ,  H04L1/1812 ,  H04L1/1829 ,  H04L5/00 ,  H04L1/1822

CPC classification number: H04W72/23 ,  H04L1/1685 ,  H04L1/1812 ,  H04L1/1854 ,  H04L1/1861 ,  H04L1/1864 ,  H04L5/0055 ,  H04L1/1822

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) and a base station may communicate in an unlicensed spectrum (e.g., a shared radio frequency spectrum band). As such, the UE may determine a codebook size for transmitting hybrid access request (HARQ) acknowledgement (ACK) feedback with respect to the unlicensed spectrum. Accordingly, the UE may base the HARQ ACK codebook size on a number of HARQ processes with which the UE has been configured. Additionally or alternatively, the UE may base the HARQ ACK codebook size on a number and/or duration of downlink channel monitoring occasions indicated by the base station. In some cases, the UE may base the HARQ ACK codebook size on a combination of the techniques described herein.

公开(公告)号：US11917697B2

公开(公告)日：2024-02-27

申请号：US16522537

申请日：2019-07-25

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Jing Sun ,  Kapil Bhattad ,  Zhifei Fan

IPC: H04W74/08 ,  H04W72/0453

CPC classification number: H04W74/0866 ,  H04W72/0453

Abstract: Physical Random Access Channel (PRACH) interlacing is disclosed. In a particular implementation, a method of performing wireless communications adjusting, by a user equipment (UE) based on a cyclic prefix (CP) length of a received Physical Random Access Channel (PRACH) configuration, CP length of one or more uplink channels to match the CP length of the PRACH configuration. The method additionally includes transmitting, by the UE, the one or more uplink channels interlaced with a PRACH channel that corresponds to the PRACH configuration. The PRACH channel and the one or more uplink channels are aligned.

公开(公告)号：US11910390B2

公开(公告)日：2024-02-20

申请号：US16947257

申请日：2020-07-24

Applicant: QUALCOMM INCORPORATED

Inventor： Kapil Bhattad ,  Ananta Narayanan Thyagarajan ,  Tanumay Datta ,  Jing Sun ,  Xiaoxia Zhang ,  Ozcan Ozturk

IPC: H04W72/21 ,  H04L5/00 ,  H04W72/23

CPC classification number: H04W72/21 ,  H04L5/0055 ,  H04W72/23 ,  H04W74/0808

Abstract: Wireless communications systems and methods related to communications in a network are provided. A user equipment (UE) may generate during a first time period, an uplink (UL) communication signal based on a scheduled grant or a configured UL grant. The UE may detect a downlink (DL) communication from a base station (BS) during a second time period after the first time period. The DL communication is devoid of the scheduled grant and the configured UL grant. The UE may transmit to the BS, the UL communication signal based on the scheduled grant or the configured UL grant in response to detecting the DL communication.

公开(公告)号：US11910370B2

公开(公告)日：2024-02-20

申请号：US17721646

申请日：2022-04-15

Applicant: QUALCOMM Incorporated

Inventor： Qingjiang Tian ,  Xiaoxia Zhang ,  Jing Sun ,  Kapil Bhattad ,  Srinivas Yerramalli ,  Chih-Hao Liu

IPC: H04W28/02 ,  H04W72/04 ,  H04W72/0453 ,  H04W72/21

CPC classification number: H04W72/0453 ,  H04W28/0231 ,  H04W72/21

Abstract: Methods, systems, and devices for wireless communications are described. The described techniques provide for a base station transmitting to a user equipment (UE) a partial bandwidth configuration for uplink transmissions, where the partial bandwidth configuration may indicate a channel interlace and a portion of a channel bandwidth, for example, for autonomous uplink (AUL) transmissions. The base station may also transmit to the UE an AUL configuration including a group identifier. The UE may determine a starting offset with respect to an AUL subframe for a partial bandwidth transmission based on the group identifier. In some cases, different UEs may be grouped into groups of UEs allocated non-overlapping resources, and UEs allocated overlapping resources may have different starting offsets to begin transmitting. According to the determined starting offset, the UE may perform the partial bandwidth transmission over the channel interlace and the portion of the channel bandwidth.