公开(公告)号：US11576205B2

公开(公告)日：2023-02-07

申请号：US17108453

申请日：2020-12-01

Applicant: QUALCOMM Incorporated

Inventor： Yisheng Xue ,  Xiaoxia Zhang ,  Jing Sun ,  Arumugam Chendamarai Kannan ,  Vinay Chande ,  Giovanni Chisci ,  Hua Wang

IPC: H04W16/14 ,  H04W74/08 ,  H04W24/10

Abstract: Enhanced measurements for new radio-unlicensed (NR-U) operations are disclosed. Compatible user equipments (UEs) may be configured to perform virtual full listen before talk (LBT) procedures for measurement purposes. The UEs may then compile LBT statistics derived from the virtual LBT procedures and include such statistics in an enhanced measurement report the their serving base stations. The LBT statistics provide a more direct and detailed reflection of the usage of a shared communication channel. Such UEs may further be configured to gather additional LBT statistics from transmission-based LBT procedures in addition to the virtual LBT procedures. The additional direct and detailed usage of a shared channel may then be provided in the enhanced measurement reports in accordance with described aspects.

公开(公告)号：US11533752B2

公开(公告)日：2022-12-20

申请号：US17248733

申请日：2021-02-04

Applicant: QUALCOMM INCORPORATED

Inventor： Jing Sun ,  Vinay Chande ,  Arumugam Chendamarai Kannan ,  Srinivas Yerramalli ,  Xiaoxia Zhang ,  Tao Luo ,  Aleksandar Damnjanovic

IPC: H04W74/08 ,  H04W52/24 ,  H04W16/28 ,  H04W16/14

Abstract: Methods related to wireless communications systems and transmissions in an unlicensed radio frequency band of a shared spectrum are provided. A device determines whether one or more criteria are satisfied for accessing an unlicensed band of a shared spectrum without performing a listen-before-talk (LBT). The device transmits a communication signal in the unlicensed band without performing LBT in response to determining that the one or more criteria are satisfied.

公开(公告)号：US11483860B2

公开(公告)日：2022-10-25

申请号：US17105321

申请日：2020-11-25

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Mostafa Khoshnevisan ,  Wooseok Nam ,  Tao Luo ,  Jing Sun ,  Sungwoo Park ,  Arumugam Chendamarai Kannan ,  Vinay Chande ,  Hua Wang ,  Yongbin Wei

IPC: H04W52/02 ,  H04W74/00 ,  H04W76/28

Abstract: Methods, systems, and devices for wireless communications are described. A base station may configure a user equipment (UE) with a multiple listen-before-talk (LBT) bandwidths, where each LBT bandwidth is associated with one or more downlink control channel candidates of a search space for a control resource set. The UE may monitor the LBT bandwidths during a wakeup signal period for a wakeup signal from the base station. The UE may be configured with a total number of blind hypotheses in the set of blind hypotheses which is equal to or greater than a total number of LBT bandwidths. The UE may determine whether to wake up and monitor an on duration of a discontinuous reception cycle based on detection of the wakeup signal.

公开(公告)号：US11457462B2

公开(公告)日：2022-09-27

申请号：US16717076

申请日：2019-12-17

Applicant: QUALCOMM Incorporated

Inventor： Mostafa Khoshnevisan ,  Tao Luo ,  Xiaoxia Zhang ,  Jing Sun ,  Sungwoo Park ,  Arumugam Chendamarai Kannan ,  Makesh Pravin John Wilson ,  Vinay Chande

IPC: H04W72/12

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a first downlink control information (DCI) communication for scheduling a first physical downlink shared channel (PDSCH). The first PDSCH may be associated with at least a first transmit receive point (TRP). The UE may receive a second DCI communication for scheduling a second PDSCH. The second PDSCH may be associated with a second TRP and at least one of the first TRP or a third TRP. The UE may receive downlink communications based at least in part on the first DCI communication and the second DCI communication. Numerous other aspects are provided.

公开(公告)号：US20220232633A1

公开(公告)日：2022-07-21

申请号：US17573477

申请日：2022-01-11

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Vinay Chande ,  Arumugam Chendamarai Kannan ,  Xiaoxia Zhang ,  Tao Luo

IPC: H04W74/08 ,  H04W74/00 ,  H04W24/10 ,  H04L1/18 ,  H04L5/00

Abstract: This disclosure provides systems, methods, and apparatuses for sharing a user equipment (UE)-initiated channel occupancy time (COT) with a base station (BS) by transmitting receiver-side assistance information on an uplink shared channel of an unlicensed radio frequency spectrum band. In some aspects, the UE may perform a clear channel assessment (CCA) prior to an uplink transmit opportunity, and if the CCA is successful, transmit the receiver-side assistance information on the uplink shared channel to share the COT with a BS. Multiple uplink transmit opportunities may be indicated to the UE send the receiver-side assistance information. In some examples, the uplink transmit opportunities may be configured grant occasions for a configured grant or scheduled by downlink control information. By transmitting to the BS, the UE may share the COT with the BS, and the BS may send downlink data to the UE during the COT.

公开(公告)号：US20220030593A1

公开(公告)日：2022-01-27

申请号：US17375905

申请日：2021-07-14

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Arumugam Chendamarai Kannan ,  Vasanthan Raghavan ,  Jing Sun ,  Vinay Chande ,  Giovanni Chisci ,  Tao Luo ,  Wooseok Nam ,  Xiaoxia Zhang

IPC: H04W72/04 ,  H04W72/12 ,  H04L5/00 ,  H04L25/02

Abstract: Methods, systems, and devices for wireless communications are described. To support communications across a wideband, a base station and user equipment (UE) may communicate across the wideband using a set of sub-bands that span the carrier bandwidth (e.g., the wideband). In some cases, the UE may transmit, to the base station, an indication of a capability of the UE to communicate a wideband communication with the base station via the set of sub-band based communications with the base station. The UE may receive, from the base station (and, in some cases based on the capability of the UE), a configuration for communicating with the base station in the carrier bandwidth using the set of sub-bands. Then, the UE may communicate with the base station in the carrier bandwidth using one or more of the set of sub-bands in accordance with the configuration.

公开(公告)号：US20220015100A1

公开(公告)日：2022-01-13

申请号：US17357342

申请日：2021-06-24

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Vasanthan Raghavan ,  Arumugam Chendamarai Kannan ,  Vinay Chande ,  Junyi Li ,  Giovanni Chisci ,  Xiaoxia Zhang ,  Tao Luo ,  Jing Sun ,  Sungwoo Park

IPC: H04W72/04 ,  H04L5/00 ,  H04B7/08 ,  H04L27/26 ,  H04W56/00

Abstract: Methods, systems, and devices for wireless communications are described. To support a reliable array response for wideband communications, a base station may configure a set of transmission instances for a set of signals distributed across a wideband carrier bandwidth. At least one transmission instance of the set of transmission instances may be configured in each sub-band of the carrier bandwidth. The base station may transmit the set of signals in the configured transmission instances to a user equipment (UE). The UE may receive the set of signals distributed across the carrier bandwidth and may measure, for the signals, a set of signal measurements corresponding to the set of sub-bands. Based on the signal measurements, the UE may determine a set of communication beams for the set of sub-bands. Using one or more of the determined communication beams, the UE may communicate with the base station in the carrier bandwidth.

公开(公告)号：US11128426B2

公开(公告)日：2021-09-21

申请号：US16839640

申请日：2020-04-03

Applicant: QUALCOMM Incorporated

Inventor： Sungwoo Park ,  Srinivas Yerramalli ,  Wooseok Nam ,  Xiaoxia Zhang ,  Tao Luo ,  Jing Sun ,  Arumugam Chendamarai Kannan ,  Vinay Chande ,  Kaushik Chakraborty ,  Olufunmilola Omolade Awoniyi-Oteri ,  Sony Akkarakaran ,  Mostafa Khoshnevisan ,  Zhifei Fan

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

Abstract: Methods, systems, and devices for time domain single carrier (SC) waveform communications are described. A user equipment (UE) may generate an SC waveform by resampling (e.g., up-sampling) mapped information bits prior to insertion of a cyclic prefix (CP) or guard interval (GI). Performing resampling prior to CP/GI insertion allows for resource allocation flexibility and a base station may allocate resources for the SC waveform in accordance with this flexibility. For example, a base station may not be limited or restricted to a certain number of resources for SC waveform communications and may therefore determine a resource allocation for the UE based on the capability of the UE to perform resampling prior to CP/GI insertion. The resampling may be performed according to a set of parameters including a resampling ratio, which may be indicated to the UE via control signaling (e.g., from the base station).

公开(公告)号：US20210289488A1

公开(公告)日：2021-09-16

申请号：US16341224

申请日：2016-12-07

Applicant: QUALCOMM Incorporated

Inventor： Peng Cheng ,  Chirag Patel ,  Vinay Chande ,  Tamer Kadous

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

Abstract: Methods, systems, and devices for wireless communication are described. Various autonomous uplink control channel configurations may be used for unscheduled uplink transmissions. For example, a user equipment (UE) may initiate an unscheduled uplink transmission and may identify an autonomous uplink control channel configuration for the uplink transmission. The UE may transmit control information and data during an initial transmission time interval of a transmission opportunity according to the control channel configuration, where the control channel configuration control may include a number of different waveforms and payload configurations. For example, an autonomous uplink control channel configuration may include control information frequency division multiplexed or time division multiplexed with data and transmitted in one or more frequency interlaces. In some cases, the control channel configuration may include a symbol period for a clear-to-send signal, and one or more symbol periods used a guard period before the data transmission.

公开(公告)号：US20210259016A1

公开(公告)日：2021-08-19

申请号：US17248179

申请日：2021-01-12

Applicant: QUALCOMM INCORPORATED

Inventor： Aleksandar Damnjanovic ,  Tao Luo ,  Arumugam Chendamarai Kannan ,  Vinay Chande ,  Xiaoxia Zhang ,  Jing Sun

IPC: H04W74/08 ,  H04L5/00 ,  H04W16/14 ,  H04W24/10 ,  H04W72/12

Abstract: Wireless communications systems and methods related to medium access in a shared radio frequency band with long-term sensing for exception to medium access restriction are provided. A wireless communication device performs channel measurements in a shared radio frequency band during a plurality of measurement occasions spaced apart in time, the performing the channel measurements being based on a plurality of spatial directions. The wireless communication device determines whether the channel measurements satisfy a criterion for accessing the shared radio frequency band without a medium access restriction. The wireless communication device transmits, in a first spatial direction, a first communication signal in the shared radio frequency band without the medium access restriction in response to determining that the channel measurements satisfy the criterion, the plurality of spatial directions including the first spatial direction.