公开(公告)号：US11606815B2

公开(公告)日：2023-03-14

申请号：US16928278

申请日：2020-07-14

Applicant: QUALCOMM Incorporated

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

IPC: H04W74/08 ,  H04W16/14 ,  H04W56/00 ,  H04W72/04 ,  H04B17/318 ,  H04W76/11 ,  H04W68/00 ,  H04W24/08

Abstract: Methods, systems, and devices for wireless communications are described. The method may include receiving, from a base station over an unlicensed radio frequency spectrum band, a broadcast message including system information, the system information indicating a LBT mode of the base station and a set of random access channel resources associated with a fixed frame period, monitoring a wireless channel of the unlicensed radio frequency spectrum band during the fixed frame period for control information from the base station based on the indicated LBT mode, determining, based on the monitoring, that the base station has access to the wireless channel during the fixed frame period, and performing, based on the determining, a random access channel transmission during the fixed frame period using the set of random access channel resources.

公开(公告)号：US20230032957A1

公开(公告)日：2023-02-02

申请号：US17965600

申请日：2022-10-13

Applicant: QUALCOMM Incorporated

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

IPC: H04W52/02 ,  H04W72/14 ,  H04W16/14 ,  H04W74/00

Abstract: Wireless communications systems and methods related monitoring the start of a transmission opportunity (TXOP) in unlicensed or shared frequency bands are provided. In one embodiment, a first wireless communication device communicates, with a second wireless communication device, a first configuration including a set of first control channel monitoring periods outside of a TXOP. The first wireless communication device communicates, with the second wireless communication device, a communication signal during the TXOP based on a second control channel monitoring period longer than each of the first control channel monitoring periods. In one embodiment, a first wireless communication device communicates, with a second wireless communication device, a configuration including a first search space for a control channel monitoring outside of a TXOP and a second search space for a control channel monitoring within the TXOP, the second search space being partially-overlapped with the first search space.

公开(公告)号：US11570815B2

公开(公告)日：2023-01-31

申请号：US17474750

申请日：2021-09-14

Applicant: QUALCOMM Incorporated

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

IPC: H04W74/08 ,  H04W74/00 ,  H04L1/00 ,  H04W72/14 ,  H04W72/12 ,  H04W16/14

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may rate match an uplink transmission around a set of resources reserved by a base station. The base station may indicate a set of reserved resources which overlaps an uplink resource allocation to the UE. The base station may transmit an indicator of the reserved resources, and the UE may identify a location of a clear channel assessment (CCA) gap in a symbol period relative to the reserved resources. By rate matching around the reserved resources and one or more CCA gaps, the UE may transmit uplink information despite the allocated uplink resources colliding with the reserved resources.

公开(公告)号：US20220399966A9

公开(公告)日：2022-12-15

申请号：US16229159

申请日：2018-12-21

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Kapil Bhattad ,  Peter Gaal ,  Tao Luo ,  Xiaoxia Zhang

IPC: H04L5/00 ,  H04B7/024 ,  H04L1/00

Abstract: Certain aspects of the present disclosure relate to techniques for determining resource elements REs used for Coordinated Multipoint (CoMP) transmission schemes. The techniques generally include determining, by a User Equipment (UE), a set of data REs used for Coordinated Multipoint (CoMP) operation. The determination is based on a CoMP scheme and data REs available to particular base stations involved in the CoMP operation. The technique further includes processing data received via the CoMP operation on the determined set of data REs.

公开(公告)号：US11528730B2

公开(公告)日：2022-12-13

申请号：US16914037

申请日：2020-06-26

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/12 ,  H04W72/04 ,  H04W72/14

Abstract: Certain aspects of the present disclosure provide techniques for scheduling physical uplink shared channels (PUSCHs) across multiple transmission time intervals (TTIs) using multi-TTI grants.

公开(公告)号：US11516842B2

公开(公告)日：2022-11-29

申请号：US16829872

申请日：2020-03-25

Applicant: QUALCOMM Incorporated

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

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

Abstract: This disclosure provides systems, methods and apparatus for a user equipment (UE), operating in a shared spectrum in a connected state or an idle state, to receive a channel occupancy time structure information (COT-SI) which includes one or more of a COT duration, a COT end symbol, and a COT pause indication, in addition to slot format indication for one or more slots. Some aspects described herein define a hierarchical approach to COT structure information (COT-SI) signaling. For example, a UE may be configured with a set of short COT tables using remaining minimum system information (RMSI) signaling and may receive concatenation of COT-SI signaling identifying index values in a control channel corresponding to one or more of the set of COT tables. Based on receiving COT-SI signaling, the UE may communicate in accordance with an occurrence of a COT.

公开(公告)号：US11445539B2

公开(公告)日：2022-09-13

申请号：US16915686

申请日：2020-06-29

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/14 ,  H04W72/12 ,  H04W74/08 ,  H04L5/00 ,  H04W16/14 ,  H04L1/00 ,  H04W28/02

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a set of one or more uplink grants scheduling at least a first uplink transmission and a second uplink transmission during a channel occupancy time of an unlicensed radio frequency spectrum band. The UE may identify a transmission gap between the first uplink transmission and the second uplink transmission of the plurality of uplink transmissions by the UE during the channel occupancy time, the transmission gap exceeding a threshold time. The UE may determine that the transmission gap corresponds to a lost uplink grant. The UE may modify the first uplink transmission or the second uplink transmission based at least in part on the determination that the transmission gap corresponds to the lost uplink grant.

公开(公告)号：US11329769B2

公开(公告)日：2022-05-10

申请号：US16930177

申请日：2020-07-15

Applicant: QUALCOMM Incorporated

Inventor： Kapil Bhattad ,  Xiaoxia Zhang ,  Maarten Menzo Wentink ,  Marco Papaleo ,  Jing Sun ,  Pravjyot Singh Deogun

IPC: H04L1/18 ,  H04W74/08

Abstract: Techniques for a node to adjust or update its CW are provided. The node transmits at least one transmission during a channel occupancy time (COT). The node can determine or adjust a contention window (CW) size following the end of COT based on whether feedback for a transmission is received or could be scheduled during the COT.

公开(公告)号：US11304229B2

公开(公告)日：2022-04-12

申请号：US16689963

申请日：2019-11-20

Applicant: QUALCOMM INCORPORATED

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

IPC: H04W4/00 ,  H04W74/08 ,  H04W74/00 ,  H04W16/14

Abstract: Wireless communications systems and methods related to constraining no-listen-before-talk (LBT)-based transmissions during link direction switches 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 configuration for determining whether to perform an LBT after a link direction switch. The first wireless communication device communicates, with the second wireless communication device, a first communication signal in a first link direction during a channel occupancy time (COT) period of the first wireless communication device or the second wireless communication device. The first wireless communication device communicates, with the second wireless communication device, a second communication signal in a second link direction different from the first link direction during the COT period based on the configuration.

公开(公告)号：US11212051B2

公开(公告)日：2021-12-28

申请号：US16292293

申请日：2019-03-04

Applicant: QUALCOMM Incorporated

Inventor： Kapil Bhattad ,  Jing Sun ,  Xiaoxia Zhang ,  Srinivas Yerramalli ,  Tamer Kadous ,  Yongbin Wei ,  Tao Luo

IPC: H04L5/00 ,  H04W74/08 ,  H04W24/10 ,  H04W72/14 ,  H04W56/00 ,  H04B7/08 ,  H04B7/06

Abstract: Beam-specific autonomous uplink (AUL) resources may be configured with an associated reference signal for beam management. For example, a base station may configure respective sets of AUL resources that are specific to one or more base station receive beams. These sets of beam-specific AUL resources may be configured to be associated (e.g., quasi co-located (QCL)) with a reference signal, such as a channel state information reference signal (CSI-RS), a synchronization signal burst (SSB), or the like. The base station may periodically transmit the reference signals that are associated with the AUL resources. A user equipment (UE), upon detecting one or more of the reference signals, may identify which set of AUL resources are available for an AUL transmission of uplink data. In such cases, the UE may select a set of AUL resources based on a signal strength of the reference signal associated with that set of AUL resources.