公开(公告)号：US11291046B2

公开(公告)日：2022-03-29

申请号：US16654825

申请日：2019-10-16

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Xiaoxia Zhang ,  Jing Sun ,  Seyed Ali Akbar Fakoorian ,  Arumugam Chendamarai Kannan ,  Kapil Bhattad

IPC: H04W74/08 ,  H04L5/00 ,  H04W72/04 ,  H04W16/14

Abstract: Various procedures associated with autonomous uplink (AUL) are disclosed. In order to address the mismatch between listen before talk (LBT) and AUL bandwidth a fractional sensing channel is defined less than 20 MHz. Accordingly, a user equipment (UE) may use the fractional sensing channel to perform LBT only on the resources allocated for AUL. Contention window update may further be modified for transmissions spanning multiple transmission opportunities (TxOPs). A contention window update may occur over all transmission channels considering full acknowledgement information of each TxOP, a percentage of acknowledgement information weighted on the number of channels, a percentage of acknowledgement information weighted on the ratio of resources on each channel, or by selecting a primary channel of the multiple channels for the contention window update. In repetition scenarios, the reference transmission for contention window updates may be selected depending on whether all repetitions are within one or multiple TxOPs.

公开(公告)号：US11265875B2

公开(公告)日：2022-03-01

申请号：US16877834

申请日：2020-05-19

Applicant: QUALCOMM Incorporated

Inventor： Mostafa Khoshnevisan ,  Xiaoxia Zhang ,  Jing Sun ,  Tao Luo ,  Srinivas Yerramalli ,  Kaushik Chakraborty ,  Arumugam Chendamarai Kannan ,  Sungwoo Park ,  Wooseok Nam ,  Juan Montojo

IPC: H04W72/04

Abstract: Aspects described herein relate to resource block allocation for time domain single-carrier waveform processing in new radio (NR). Specifically, in an aspect, a guard band may be allocated for a single-carrier waveform in a time or frequency domain. In another aspect, a resource block may be allocated for a time domain single-carrier waveform.

公开(公告)号：US11246155B2

公开(公告)日：2022-02-08

申请号：US16281828

申请日：2019-02-21

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/14 ,  H04W72/12 ,  H04L1/18 ,  H04L5/00 ,  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：US11234272B2

公开(公告)日：2022-01-25

申请号：US16691074

申请日：2019-11-21

Applicant: QUALCOMM Incorporated

Inventor： Wooseok Nam ,  Tao Luo ,  Srinivas Yerramalli ,  Xiaoxia Zhang ,  Jing Sun ,  Makesh Pravin John Wilson

IPC: H04W74/08 ,  H04W72/04 ,  H04W16/14 ,  H04W74/00 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit a downlink traffic query to a base station based at least in part on an expectation of downlink traffic from the base station over an unlicensed frequency spectrum band and an absence of downlink traffic from the base station over the unlicensed frequency spectrum band for a threshold duration of time. The UE may receive a downlink traffic indication response from the base station based at least in part on the downlink traffic query. The UE may monitor the unlicensed frequency spectrum band based at least in part on the downlink traffic indication response.

公开(公告)号：US20220022145A1

公开(公告)日：2022-01-20

申请号：US17370981

申请日：2021-07-08

Applicant: QUALCOMM Incorporated

Inventor： Vasanthan Raghavan ,  Srinivas Yerramalli ,  Arumugam Chendamarai Kannan ,  Tao Luo ,  Xiaoxia Zhang ,  Junyi Li

IPC: H04W56/00 ,  H04W16/28 ,  H04W24/08 ,  H04W72/12 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a mapping between a set of synchronization signal block resources and a set of operating frequencies within a frequency band. The UE may identify a parameter of a synchronization signal block based on an operating frequency of the set of operating frequencies for conveying the synchronization signal block and a direction of a beam for conveying the synchronization signal block. The parameter may include an index of the synchronization signal block. The UE may monitor for the synchronization signal block based on the identified parameter.

公开(公告)号：US11218206B2

公开(公告)日：2022-01-04

申请号：US16513010

申请日：2019-07-16

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Xiaoxia Zhang ,  Jing Sun ,  Seyed Ali Akbar Fakoorian ,  Chih-Hao Liu

IPC: H04B17/309 ,  H04B7/06 ,  H04W52/18 ,  H04B7/0456 ,  H04W74/08

Abstract: Methods, systems, and devices for wireless communications are described. In some cases, a wireless device such as a user equipment (UE) may receive a downlink transmission from a base station over a wireless channel, select, based on the received downlink transmission, a channel state information (CSI) computation mode for the wireless channel, where the CSI computation mode is based on an effective isotropic radiated power (EIRP) constraint, measure a set of one or more CSI reference signals (CSI-RSs) from the base station to obtain a CSI measurement, and transmit a CSI report to the base station based on the selected CSI computation mode and the CSI measurement.

公开(公告)号：US20210337540A1

公开(公告)日：2021-10-28

申请号：US17367583

申请日：2021-07-05

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Jing Sun ,  Xiaoxia Zhang ,  Tamer Kadous ,  Yongbin Wei

IPC: H04W72/04 ,  H04W72/12 ,  H04W74/08

Abstract: Methods, systems, and devices for wireless communications are described that provide for frame-based initiator device operations. A wireless device may be operating within a frame-based equipment communications system, where a frame may include a channel occupancy time period and a minimum idle period. An initiating device may be configured to initiate autonomous uplink communications during the channel occupancy time period of its frame, while the device may not initiate communications during an idle period of its frame. In some cases, a frame-based equipment communications system may include more than one initiating device, where the idle periods for different initiating devices may occur at different times. In some cases, the initiating device may be configured to initiate communications during the idle period for another initiating device. This may allow the wireless system to decrease system overhead associated with a minimum idle period per frame.

公开(公告)号：US11146968B2

公开(公告)日：2021-10-12

申请号：US16676184

申请日：2019-11-06

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Jing Sun ,  Xiaoxia Zhang

IPC: H04W4/00 ,  H04W16/14 ,  H04W74/08 ,  H04L5/00 ,  H04L1/16 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communications are described. A communication device, such as a user equipment (UE) may transmit a message to a base station (e.g., a NodeB, an eNodeB (eNB), a next-generation NodeB or a giga-NodeB (either of which may be referred to as a gNB)) in wireless communications with the UE. The message may include a UE capability to append a preamble waveform to an uplink transmission to the base station. In some examples, a preamble waveform may include a Wi-Fi preamble or a new radio unlicensed (NR-U) preamble. Based on the UE capability, the base station may determine and transmit a preamble configuration to the UE, which the UE may use to generate and append a preamble waveform to another message for an uplink transmission to the base station.

公开(公告)号：US20210298074A1

公开(公告)日：2021-09-23

申请号：US17249732

申请日：2021-03-10

Applicant: QUALCOMM INCORPORATED

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

IPC: H04W74/08 ,  H04B17/336

Abstract: Wireless communications systems and methods related to communications in a network are provided. A first wireless communication device may communicate to a second wireless communication device, a modification to a time parameter associated with at least one of a minimum idle period (MIP) of a frame period or a maximum channel occupancy time (MCOT) of the frame period. Additionally, the first wireless communication device may communicate with the second wireless communication device, a communication signal during the frame period based on the modification to the time parameter.

公开(公告)号：US20210298073A1

公开(公告)日：2021-09-23

申请号：US17198811

申请日：2021-03-11

Applicant: QUALCOMM Incorporated

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

IPC: H04W74/08 ,  H04W16/14

Abstract: A proxy sensing-based channel access procedure is discussed for shared spectrum networks. Within a given network, a distribution of proxy nodes may be deployed around a network operating area. A control node, which controls the proxy sensing mode for the network, may configure the active network nodes to conduct communications via the shared communication spectrum without first performing any type of channel sensing on the shared communication spectrum. The control node may then also configured the proxy nodes to perform channel sensing on the shared spectrum for the entire network. Using the reported channel sense results from the proxy nodes, the control node may determine whether detected interference is occasional or persistent, and whether to take some action to modify the communications or operations of the network.