公开(公告)号：US11071138B2

公开(公告)日：2021-07-20

申请号：US16281429

申请日：2019-02-21

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/14 ,  H04L5/14 ,  H04W72/04 ,  H04L5/00 ,  H04W72/12 ,  H04W74/08

Abstract: Over-the-air (OTA) dynamic time division duplex (TDD) is disclosed with a channel use indicator (CUI) receiver (CUI-R) signal multiplexed in uplink transmissions. According to various aspects, a user equipment (UE) may receive a downlink grant from a serving base station, in which the downlink grant identifies downlink transmissions in one or more subsequent communication slots. The UE may identify a trigger for transmission of a channel usage signal associated with the grant that may be received by neighboring UEs that may potentially interfere. The UE transmits the channel usage signal in a next scheduled uplink region and then receives downlink data from the serving base station according to the downlink grant. If the neighboring UE receives a conditional uplink grant, then it may proceed with uplink transmissions when it fails to detect the channel usage signal from the UE.

公开(公告)号：US11050483B2

公开(公告)日：2021-06-29

申请号：US16453940

申请日：2019-06-26

Applicant: QUALCOMM Incorporated

Inventor： Arvind Sridharan ,  Kapil Bhattad ,  Manikandan Chandrasekar ,  Gowrisankar Somichetty ,  Alberto Rico Alvarino ,  Xiao Feng Wang

IPC: H04L5/00 ,  H04B7/26 ,  H04J3/06 ,  H04L5/14 ,  H04L5/02 ,  H04W4/70 ,  H04L1/08 ,  H04L5/24 ,  H04W72/04 ,  H04L1/04 ,  H04W56/00

Abstract: A UE may determine a frame structure for narrowband communications, the frame structure corresponding to one frame structure from a group of TDD frame structures of different downlink and uplink subframe configurations. The UE receives configuration information indicating a first carrier to monitor for a BCH and/or a SIB1. Then, the UE receives a PSS, an SSS, and the BCH and/or the SIB1 using the frame structure determined for the narrowband communications. The first carrier that is used to receive the BCH and/or the SIB1 may be different from a second carrier used to receive one or more of the PSS or the SSS.

公开(公告)号：US11044135B2

公开(公告)日：2021-06-22

申请号：US16254262

申请日：2019-01-22

Applicant: QUALCOMM Incorporated

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

IPC: H04L27/26 ,  H04W74/08 ,  H04W72/04 ,  H04L5/00 ,  H04W72/12

Abstract: New radio (NR) shared spectrum (NR-SS) listen before talk (LBT) gap optimizations are disclosed in which an indication, such as the preemption indicator, may provide an indication of a communications gap, in which preemptive communications may occur, to a user equipment (UE) currently engaged in communications, whether the preemptive communications are to another UE or network node or through different signal channels. The gap and preemptive communication may be measured in full symbol lengths, sub-symbol lengths, or interlaces. The communication gap may provide sufficient resources for the preempting node to adequately obtain the shared channel via listen before talk (LBT) procedures, and for the original UE to resume communications after the gap. The communication gap may also be optimally configured in order to provide both the UE and preempting node as much communication resources as possible within the scheduled communication opportunities.

公开(公告)号：US20210176779A1

公开(公告)日：2021-06-10

申请号：US17248830

申请日：2021-02-09

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/14 ,  H04W72/04

Abstract: Wireless communications systems and methods related to communicating in a communication medium are provided. A first wireless communication device communicates with a second wireless communication device, a first scheduling grant. The first wireless communication device communicates, with the second wireless communication device, a second scheduling grant including at least one of a start slot index (SSI) or a slot format indicator (SFI). The first wireless communication device communicates, with the second wireless communication device, an uplink communication signal based on the first scheduling grant and the second scheduling grant.

公开(公告)号：US10999864B2

公开(公告)日：2021-05-04

申请号：US16806979

申请日：2020-03-02

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/14 ,  H04L1/18 ,  H04L5/00 ,  H04W72/12 ,  H04L1/16

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：US20210105103A1

公开(公告)日：2021-04-08

申请号：US16948843

申请日：2020-10-01

Applicant: QUALCOMM INCORPORATED

Inventor： Kapil Bhattad ,  Jing Sun ,  Pravjyot Singh Deogun ,  Xiaoxia Zhang

IPC: H04L1/18 ,  H04W72/12

Abstract: Wireless communications systems and methods related to unscheduled uplink hybrid automatic repeat request (HARQ) data transmissions in a shared radio frequency band are provided. A user equipment (UE) determine priorities for a plurality of transport blocks (TBs) associated with a plurality of hybrid automatic repeat request (HARQ) processes for transmission during configured transmission periods. The UE transmits, to a base station (BS), the plurality of TBs in a shared radio frequency band during the configured transmission periods based on the determined priorities.

公开(公告)号：US10972225B2

公开(公告)日：2021-04-06

申请号：US16822721

申请日：2020-03-18

Applicant: QUALCOMM Incorporated

Inventor： Mostafa Khoshnevisan ,  Jing Sun ,  Xiaoxia Zhang ,  Kapil Bhattad ,  Peter Gaal

IPC: H04L12/28 ,  H04L1/16 ,  H04W16/14 ,  H04W28/04 ,  H04L5/00 ,  H04L1/18 ,  H04J1/16

Abstract: Methods, systems, and devices for wireless communications are described that provide for group or one-shot acknowledgment (ACK) feedback reporting, in which feedback for a number of different downlink transmissions may be provided by a user equipment (UE) to a base station. A base station may trigger a one-shot feedback report that includes less than all of the ACK feedback that is available at the UE to provide in a report. The ACK feedback may include an indication of an ACK or a negative acknowledgement (NACK) along with information related to a data indicator associated with the downlink transmission. In some cases regular ACK feedback reports and one-shot feedback reports may be multiplexed and transmitted by a UE. Further, a last downlink transmission to be included in a one-shot feedback report may be determined based on a receipt time of scheduling information or an ACK feedback timeline.

公开(公告)号：US10972211B2

公开(公告)日：2021-04-06

申请号：US16790453

申请日：2020-02-13

Applicant: QUALCOMM Incorporated

Inventor： Alberto Rico Alvarino ,  Kapil Bhattad ,  Wanshi Chen ,  Hao Xu

IPC: H04L1/00 ,  H04W28/04 ,  H04W8/22

Abstract: A method of wireless communication of a user equipment (UE) includes communicating with a base station using a baseline channel code. The UE indicates to the base station, using the baseline channel code, support for an additional channel code that is different than the baseline channel code. The UE receives, from the base station, an indication to operate using the additional channel code. Then, the UE receives a first transmission on first set of resources and a second transmission on a second set of resources from the base station, the first transmission being encoded with the baseline channel code and the second transmission being encoded with the additional channel code.

公开(公告)号：US10959259B2

公开(公告)日：2021-03-23

申请号：US16420973

申请日：2019-05-23

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/14 ,  H04W74/08 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communications are described. A wireless communications system may support grants for uplink or downlink transmission over multiple transmission time intervals (TTIs). A multi-TTI grant may include a base grant and an extended grant that include separate information and may be transmitted simultaneously (e.g., within the same TTI) or separately. A grant type (e.g., whether a grant is a base grant or an extended grant) or an association between a base grant and an extended grant may be conveyed (e.g., via the multi-TTI grant). A downlink assignment index (DAI) may be included for one or more TTIs subject to the multi-TTI. For instance, DAI may be included for each TTI or for a subset of TTIs.

公开(公告)号：US10945287B2

公开(公告)日：2021-03-09

申请号：US16804581

申请日：2020-02-28

Applicant: QUALCOMM INCORPORATED

Inventor： Jing Sun ,  Xiaoxia Zhang ,  Kapil Bhattad

IPC: H04W72/12 ,  H04W74/08 ,  H04W72/14 ,  H04L5/00 ,  H04L5/10

Abstract: Wireless communications systems and methods related to sharing a channel occupancy time (COT) associated with a scheduled UL transmission in a frequency spectrum shared by multiple network operating entities are provided. A first wireless communication device communicates, with a second wireless communication device, a first uplink (UL) scheduling grant. The first wireless communication device communicates, with second wireless communication device, a first UL communication signal based on the first UL scheduling grant during a first COT, the first COT based on an extended clear channel assessment (eCCA) associated with the first UL communication signal. The first wireless communication device communicates, with the second wireless communication device, a downlink (DL) communication signal during the first COT based on COT sharing information associated with the first COT.