公开(公告)号：US11265128B2

公开(公告)日：2022-03-01

申请号：US16394795

申请日：2019-04-25

Applicant: QUALCOMM Incorporated

Inventor： Huilin Xu ,  Jing Sun ,  Heechoon Lee ,  Joseph Binamira Soriaga

IPC: H04L5/00 ,  H04L27/26 ,  H04L1/00 ,  H04W72/04

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless communication device may determine that a threshold is satisfied with regard to a search space set mapping, for a plurality of search space sets, for a slot of a downlink control channel, wherein the threshold relates to at least one of: a slot-based control channel element limit, or a slot-based blind decode limit; and perform a mapping of or monitor a subset of search space set occasions, of a search space set of the plurality of search space sets, in the slot in connection with determining that the threshold is satisfied. Numerous other aspects are provided.

公开(公告)号：US11228405B2

公开(公告)日：2022-01-18

申请号：US16729119

申请日：2019-12-27

Applicant: QUALCOMM Incorporated

Inventor： Huilin Xu ,  Xiao Feng Wang ,  Wanshi Chen ,  Peter Gaal

IPC: H04L5/00 ,  H04W72/04 ,  H04L1/00 ,  H04L27/26

Abstract: The described techniques provide for devices (e.g., a base station, a user equipment (UE)) to determine control channel processing limits for control channels for a CA configuration for a plurality of component carriers (CCs) with mixed numerology and synchronicities (e.g., CCs may have different transmission time interval (TTI) durations, subcarrier spacings, or frame timing). The devices may determine control channel processing limits for numerology groups or synchronization groups of the CA configuration based on a UE capability for processing control channels for a number of CCs, which may be allocated proportionally according to number of cells, allocated equally, or allocated using weighting factors assigned to synchronization or numerology groups. A base station may establish a CA configuration or control channel configuration according to the capability, or may ensure that a per-numerology restraint is not exceeded by determining a combined processing parameter.

公开(公告)号：US20220014345A1

公开(公告)日：2022-01-13

申请号：US17343665

申请日：2021-06-09

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Sayed Khairy Abdelghaffar ,  Ahmed Attia Abotabl ,  Yuchul Kim ,  Wanshi Chen ,  Huilin Xu ,  Hwan Joon Kwon ,  Krishna Kiran Mukkavilli ,  Tingfang Ji

IPC: H04L5/14 ,  H04W72/04 ,  H04L1/16

Abstract: Methods, systems, and devices for wireless communications are described. In some systems, a user equipment (UE) may communicate with a base station using an operating bandwidth part (BWP) that includes a first set of frequency resources. The UE may receive a group-common downlink control information (GC-DCI) message from the base station that includes a resource format indicator (RFI) for the UE (e.g., among multiple RFIs for a set of UEs in the GC-DCI) indicating a second set of frequency resources. The UE may modify the operating BWP based on the second set of frequency resources and communicate with the base station using the modified operating BWP. In some examples, the UE may switch the operating BWP to the second set of frequency resources or may reduce the operating BWP to a set of overlapping frequency resources between the first and second sets of frequency resources.

公开(公告)号：US20210410120A1

公开(公告)日：2021-12-30

申请号：US17192782

申请日：2021-03-04

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/04 ,  H04W72/12

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may connect with a base station over a set of component carriers according to a carrier aggregation configuration. The UE may then monitor a search space configured for scheduling multiple component carriers and may receive downlink control information (DCI) based on monitoring the search space. The DCI may include a carrier indicator field (CIF) and may schedule a set of data transmissions over two or more component carriers (e.g., from the set of component carriers). The UE may determine that the two or more component carriers include the first component carrier and the second component carrier based on the monitored search space, the CIF within the DCI, or both. The UE may then transmit and receive the set of data transmissions over the first and second component carriers.

公开(公告)号：US20210410119A1

公开(公告)日：2021-12-30

申请号：US17192719

申请日：2021-03-04

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/04 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may communicate with a base station over a set of component carriers according to a carrier aggregation configuration. In some cases, the UE may receive an indication of one or more groups of units, where each group may include one or more component carriers and/or one or more time intervals of each component carrier. The UE may receive downlink control information (DCI) including one or more fields that are common to a group of units that may schedule a set of data transmissions over the one or more groups of units such that the single DCI may schedule multiple component carriers (e.g., two or more) over one or more time intervals. The UE may transmit or receive the set of data transmissions (e.g., uplink or downlink data transmissions) over the scheduled units based on receiving the DCI.

公开(公告)号：US11212736B2

公开(公告)日：2021-12-28

申请号：US16373475

申请日：2019-04-02

Applicant: QUALCOMM Incorporated

Inventor： Huilin Xu ,  Heechoon Lee ,  Jing Sun ,  Wanshi Chen

IPC: H04L12/28 ,  H04W48/12 ,  H04W72/04

Abstract: Improved methods, systems, devices, or apparatuses that support search space design are described. The described techniques enhance the number and utility of applied control channel candidates in the presence of blind decoding and control channel element (CCE) channel estimation limitations. The techniques allocate available blind decodes using a nested mapping scheme over one or more dimensions, based on a prioritization. In some other cases, the number of blind decodes may be allocated, either uniformly, or proportionally, between the plurality of search space set occasions. In some cases, the applied control channel candidates may be determined by dropping control channel candidates along one or more dimensions (e.g., search space set, or search space set occasion), until the blind decoding limitation or CE limitation is satisfied.

公开(公告)号：US20210345388A1

公开(公告)日：2021-11-04

申请号：US17241849

申请日：2021-04-27

Applicant: QUALCOMM Incorporated

Inventor： Yi Huang ,  Jing Lei ,  Huilin Xu ,  Hwan Joon Kwon ,  Wanshi Chen

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

Abstract: Methods, systems, and devices for wireless communications are described. In some systems, a user equipment (UE) may receive a downlink control message from a base station scheduling multiple downlink messages and indicating a first offset for communicating a first feedback message of multiple feedback messages including feedback information for the multiple downlink messages. The UE may additionally receive, from the base station, a second offset for communicating the remaining feedback messages of the multiple feedback messages after communicating the first feedback message. The UE may transmit the first feedback message a quantity of resources equal to the first offset after receiving a first downlink message. The UE may then transmit the remaining feedback messages a quantity of resources equal to the second offset after transmitting the first feedback message. Each of the feedback messages may include feedback information for one downlink message.

公开(公告)号：US11153873B2

公开(公告)日：2021-10-19

申请号：US16581168

申请日：2019-09-24

Applicant: QUALCOMM Incorporated

Inventor： Wei Yang ,  Huilin Xu ,  Peter Pui Lok Ang ,  Heechoon Lee

IPC: H04W4/00 ,  H04W72/04 ,  H04W72/02 ,  H04W88/02

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determining that a first physical downlink control channel (PDCCH) candidate and a second PDCCH candidate in a control resource set (CORESET) are aligned with each other, wherein the first PDCCH candidate is a common search space (CSS) candidate and the second PDCCH candidate is a UE-specific search space (UESS) candidate; and decode downlink control information in accordance with a selected candidate, of the CSS candidate or the UESS candidate, based at least in part on a rule indicating whether the time-domain resource allocation is to be determined in accordance with the CSS candidate or the UESS candidate. Numerous other aspects are provided.

公开(公告)号：US20210314889A1

公开(公告)日：2021-10-07

申请号：US17214538

申请日：2021-03-26

Applicant: QUALCOMM Incorporated

Inventor： Alberto Rico Alvarino ,  Xiao Feng Wang ,  Liangping Ma ,  Ayan Sengupta ,  Jun Ma ,  Huilin Xu ,  Peter Gaal ,  Bharat Shrestha

IPC: H04W56/00 ,  H04W4/029 ,  H04W74/08

Abstract: Non-terrestrial networks (NTNs) may establish uplink (UL) and downlink (DL) radio frame timing structures to efficiently account for propagation delay and propagation delay variation associated with communications in the NTN. NTNs may manage (synchronize) radio frame timing structures of base stations (e.g., satellites) and user equipment (UEs) in the NTN. Further, UEs may determine timing advance (TA) values to be applied to UL transmissions based on their respective scheduling offset (e.g., offset in UL and DL radio frame timing structures), as well as based on propagation delay or round trip time (RTT). As such, served UEs may determine UL timing such that UL transmissions from the UEs to a satellite arrives at the satellite in a time synchronized manner. In other cases, a satellite may determine UL timing, based on reception timing, such that various UEs in the NTN may implement uniform UL and DL radio frame timing structures.

公开(公告)号：US20210282055A1

公开(公告)日：2021-09-09

申请号：US17184377

申请日：2021-02-24

Applicant: QUALCOMM Incorporated

Inventor： Huilin Xu ,  Kazuki Takeda ,  Peter Gaal

IPC: H04W28/22

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a first rate matching resource indication that indicates that a first rate matching resource is available for use by the UE in reception of a downlink shared channel. The UE may also receive a second rate matching resource indication that indicates that a second rate matching resource is not available for use by the UE in reception of the downlink shared channel. The UE may identify a rate matching resource indication conflict arising from an overlap of at least one resource element included in both the first rate matching resource and the second rate matching resource. The UE may then resolve the rate matching resource indication conflict in accordance with a conflict resolution rule.