公开(公告)号：US20210258997A1

公开(公告)日：2021-08-19

申请号：US17154362

申请日：2021-01-21

Applicant: QUALCOMM Incorporated

Inventor： Mostafa Khoshnevisan ,  Kazuki Takeda ,  Xiaoxia Zhang ,  Peter Gaal ,  Alberto Rico Alvarino ,  Huilin Xu ,  Wanshi Chen

IPC: H04W72/12 ,  H04L5/00 ,  H04W72/04 ,  H04L1/18

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may provide hybrid automatic repeat request (HARQ) feedback for multiple physical channels (e.g., multiple physical downlink shared channels (PDSCH)) scheduled via cross component carrier scheduling. A base station may transmit downlink control information (DCI) messages via physical downlink control channel (PDCCH), to the UE to schedule the multiple PDSCH over multiple component carriers. The UE may monitor for the multiple PDSCH over the multiple component carriers, respectively. The UE may identify resource allocations to use for HARQ feedback transmissions associated with the multiple PDSCH, based on the DCI messages received. The DCI may include a number of control fields that the UE may use to determine resource allocations to use for the HARQ feedback transmissions. The UE may thus improve coverage for wireless communications by supporting HARQ feedback for multiple PDSCH scheduled via cross component carrier.

公开(公告)号：US20210243793A1

公开(公告)日：2021-08-05

申请号：US17235487

申请日：2021-04-20

Applicant: QUALCOMM Incorporated

Inventor： Peter Pui Lok Ang ,  Peter Gaal ,  Wanshi Chen ,  Alexei Yurievitch Gorokhov ,  Jing Sun ,  Joseph Binamira Soriaga ,  Heechoon Lee

IPC: H04W72/12 ,  H04L5/00 ,  H04W28/06 ,  H04W72/04

Abstract: Different sets of downlink control information (DCI) fields may be configured for DCI that includes an indication to trigger bandwidth part switching at a user equipment (UE). For example, a UE may receive DCI that triggers the UE to switch operation from a first bandwidth part to a second bandwidth part. The UE may also identify a set of transformable DCI fields and a set of non-transformable DCI fields within the DCI. The UE may then determine updated content of the DCI for application to the second bandwidth part based on whether DCI fields are included in the set of transformable or the set of non-transformable fields. In some cases, the UE may identify a null assignment in the received DCI and may switch its operation from the first bandwidth part to the second bandwidth part based on the null assignment.

公开(公告)号：US11082947B2

公开(公告)日：2021-08-03

申请号：US16559685

申请日：2019-09-04

Applicant: QUALCOMM Incorporated

Inventor： Madhavan Srinivasan Vajapeyam ,  Hao Xu ,  Wanshi Chen ,  Peter Gaal ,  Masato Kitazoe ,  Miguel Griot

IPC: H04W68/02 ,  H04W4/06 ,  H04W4/70 ,  H04W68/00 ,  H04W72/04 ,  H04W74/08

Abstract: Certain aspects of the present disclosure generally relate to wireless communications, and more specifically to enhanced paging procedures for devices with limited communications resources, such as machine type communication (MTC) devices and enhanced or evolved MTC (eMTC) devices. An example method generally includes determining a set of subframes corresponding to a paging occasion for the UE to receive a paging message from a base station (BS), determining, within the set of subframes, at least one narrowband region for receiving the paging message, and monitoring for the paging message in the at least one narrowband region within the set of subframes.

公开(公告)号：US11075679B2

公开(公告)日：2021-07-27

申请号：US16305591

申请日：2017-06-22

Applicant: QUALCOMM Incorporated

Inventor： Chao Wei ,  Wanshi Chen ,  Peter Gaal ,  Bo Chen

IPC: H04B7/06 ,  H04L5/00 ,  H04J13/00

Abstract: Mapping with CSI-RS resources with a code divisional multiplex (CDM) length of eight is disclosed. Such mapping allows for flexibly configuring the set of resource elements (REs) for mapping based on the available CSI-RS resources.

公开(公告)号：US20210227505A1

公开(公告)日：2021-07-22

申请号：US17153697

申请日：2021-01-20

Applicant: QUALCOMM Incorporated

Inventor： Gabi Sarkis ,  Wanshi Chen ,  Shuanshuan Wu

IPC: H04W72/02 ,  H04W72/04 ,  H04W72/12 ,  H04B7/0456

Abstract: Methods, systems, and devices for wireless communications are described. Wireless communications systems may support both access links and sidelinks (e.g., D2D communication links) for communications between one or more communication devices. Wireless devices may communicate sidelink control information in two stages, where first stage sidelink control information (SCI-1) may be transmitted via a physical sidelink channel and second stage sidelink control information (SCI-2) may be transmitted via a physical shared channel. In cases where sidelink communications use several (e.g., three or more) layers, the described layer mapping techniques may provide for robust transmission of control information, higher data rates, improved spectral efficiency, etc. For example, SCI-1 and/or SCI-2 may be mapped to physical channel layers by repeating the same modulation symbols across all layers, across groupings or sets of layers, across layers associated with each codeword, etc.

公开(公告)号：US11071106B2

公开(公告)日：2021-07-20

申请号：US16223100

申请日：2018-12-17

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Peter Gaal ,  Juan Montojo ,  Tao Luo ,  Wanshi Chen

IPC: H04W72/12 ,  H04W72/14 ,  H04W72/04 ,  H04L1/00 ,  H04L1/18 ,  H04W68/00 ,  H04W74/00 ,  H04L5/00 ,  H04W28/02 ,  H04W16/14 ,  H04W52/02 ,  H04W52/14 ,  H04W52/36 ,  H04W56/00 ,  H04W74/08

Abstract: Techniques are described for wireless communication. One method includes detecting a first reference signal received from a user equipment (UE) in a reference scheduled transmission burst including a plurality of contiguous transmission time intervals (TTIs) received over a shared radio frequency spectrum band; identifying a reference TTI in which the first reference signal is received; determining a contention window size usable by the UE to contend for access to the shared radio frequency spectrum band; and transmitting an indication of the determined contention window size to the UE.

公开(公告)号：US11064329B2

公开(公告)日：2021-07-13

申请号：US14254528

申请日：2014-04-16

Applicant: QUALCOMM Incorporated

Inventor： Hao Xu ,  Wanshi Chen ,  Peter Gaal

IPC: H04W72/04 ,  H04W4/70 ,  H04W74/08 ,  H04W74/00

Abstract: Certain aspects of the present disclosure generally relate to wireless communications and, more particularly, to techniques for control-less operation for machine-type communications (MTC).

公开(公告)号：US11057175B2

公开(公告)日：2021-07-06

申请号：US16259941

申请日：2019-01-28

Applicant: QUALCOMM Incorporated

Inventor： Jing Lei ,  Peter Gaal ,  Hao Xu ,  Wanshi Chen ,  Yongbin Wei ,  Xiao Feng Wang ,  Renqiu Wang ,  Seyed Ali Akbar Fakoorian ,  Madhavan Srinivasan Vajapeyam ,  Alberto Rico Alvarino ,  Juan Montojo

IPC: H04W72/04 ,  H04L5/00 ,  H04J11/00 ,  H04L27/26 ,  H04W56/00

Abstract: Aspects of the present disclosure provide techniques for design of synchronization signals for narrowband operation, which can be used for stand-alone/in-band/guard-band deployment. An example method is provided for operations which may be performed by a base station (BS). The example method generally includes generating a primary synchronization signal (PSS) utilizing a first code sequence and a cover code applied to the first code sequence over a first number of symbols within one or more subframes, generating a secondary synchronization signal (SSS) based on a second code sequence over a second number of symbols within one or more subframes, and transmitting the PSS and the SSS in the first and second subframes to a first type of a user equipment (UE) that communicates on one or more narrowband regions of wider system bandwidth.

公开(公告)号：US11051327B2

公开(公告)日：2021-06-29

申请号：US16537422

申请日：2019-08-09

Applicant: QUALCOMM Incorporated

Inventor： Seyedkianoush Hosseini ,  Peter Gaal ,  Huilin Xu ,  Wanshi Chen ,  Tao Luo

IPC: H04W72/12 ,  H04W72/04 ,  H04W72/14 ,  H04L5/00 ,  H04L5/10

Abstract: Rate-matching and channel estimation are disclosed for new radio (NR) user equipments (UEs). An NR UE obtains coexistence information of neighboring legacy operations including common reference signal (CRS) ports, CRS frequency pattern, and a legacy subframe type corresponding to the NR transmission segments. The NR UE determines legacy CRS occasion(s) coinciding with shared downlink direction operations for the NR and legacy operations, and rate-matches reception of NR downlink transmissions around the CRS occasion(s). In other aspects, an NR UE detects overlap of a downlink signal with downlink control channel candidate of a configured control resource set (CORESET). The UE ends monitoring of the candidate within a search space of the CORESET in response to the detected overlap, detects a collision between a scheduled demodulation reference signal (DMRS) and the downlink signal occasion, and discards all or part of the CORESET.

公开(公告)号：US11050523B2

公开(公告)日：2021-06-29

申请号：US16407963

申请日：2019-05-09

Applicant: QUALCOMM Incorporated

Inventor： Seyedkianoush Hosseini ,  Wanshi Chen ,  Peter Gaal

IPC: H04L1/18 ,  H04L1/00

Abstract: Techniques are described herein for adjusting control signaling for a subsequent message based on a number of retransmissions of the subsequent message. The number of repetitions of the subsequent message may be used to modify the parameters of the subsequent message and/or modify the control signaling related to the parameters of the subsequent message. Downlink control information may include a plurality of fields related to one or more parameters of the subsequent message. A size or a range of at least some of the plurality of fields may vary based on the number of repetitions of the subsequent message. The number of repetitions may be based on a repetition factor.