公开(公告)号：US11622353B2

公开(公告)日：2023-04-04

申请号：US17166867

申请日：2021-02-03

Applicant: QUALCOMM incorporated

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

IPC: H04L5/00 ,  H04W72/044 ,  H04W76/11 ,  H04W24/08 ,  H04W72/04 ,  H04L1/00 ,  H04W76/27 ,  H04W74/08 ,  H04W74/00 ,  H04B7/08 ,  H04B7/06

Abstract: A base station may configure a set of autonomous uplink (AUL) resources for a specific base station receive beam, or the AUL resources may be configured for specific user equipment (UEs) or user groups. Additionally, the AUL resources may be configured to include a sensing portion, a data portion, or both. As an example, a UE may receive an AUL configuration that includes an indication of a set of AUL resources that are specific to a base station receive beam. The UE may then determine that the set of AUL resources is available and perform an AUL transmission of uplink data using the set of beam-specific AUL resources. Additionally or alternatively, the UE may perform the AUL transmission with respective portions that include a sensing signal and the uplink data. The base station may use the sensing signal to determine a receive beam on which to receive the uplink data.

公开(公告)号：US11552750B2

公开(公告)日：2023-01-10

申请号：US16218345

申请日：2018-12-12

Applicant: QUALCOMM Incorporated

Inventor： Jing Lei ,  Jing Sun ,  Tamer Kadous ,  Xiaoxia Zhang

IPC: H04L5/00 ,  H04W72/12 ,  H04L1/00 ,  H04L27/26 ,  H04W74/08

Abstract: Wireless communications systems and methods related to performing subband-based random access and/or subband-based scheduling request in a network are provided. A first wireless communication device receives a communication configuration indicating one or more subbands for transmitting a signal including at least one of a random access preamble sequence or a scheduling request. The first wireless communication device performs a clear channel assessment (CCA) on each subband of the one or more subbands. The first wireless communication device transmits the signal using at least one subband of the one or more subbands based on a result of the CCA.

公开(公告)号：US11503559B2

公开(公告)日：2022-11-15

申请号：US16401876

申请日：2019-05-02

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Xiaoxia Zhang ,  Yongbin Wei ,  Srinivas Yerramalli ,  Tamer Kadous ,  Andrei Dragos Radulescu

IPC: H04W56/00 ,  H04B17/318 ,  H04B17/364 ,  H04B17/10

Abstract: Cell acquisition is disclosed in frequency diversity configured for frame based equipment (FBE) access, such as using opportunistic frequency switching. A user equipment (UE) begins cell acquisition by synchronizing to an available communication channel of an available cell in response to detection of a synchronization signal block (SSB) associated with a network on which the UE communicates. The UE receives system information associated with the available cell from a serving base station, wherein the system information includes identification of at least: a link indicator identifying linked communication channels available for opportunistic switching, sensing occasion offsets for each of the linked channels, and access information associated with each of the linked channels. The UE measures a channel quality for each available channel. The base station transmits this system information on each of the linked channels and then monitors the allocated random access resources for signals from the UEs.

公开(公告)号：US11456945B2

公开(公告)日：2022-09-27

申请号：US16797887

申请日：2020-02-21

Applicant: QUALCOMM Incorporated

Inventor： Tao Luo ,  Juan Montojo ,  Tamer Kadous ,  Junyi Li ,  Xiaoxia Zhang ,  Jing Sun ,  Taesang Yoo ,  Siddhartha Mallik

IPC: H04W76/22 ,  H04L45/16 ,  H04W52/54 ,  H04B17/318 ,  H04B7/06 ,  H04W52/34 ,  H04B17/24 ,  H04W52/24 ,  H03M13/09 ,  H04L12/18 ,  H04W72/04 ,  H04W72/08 ,  H04W72/12 ,  H04L5/00 ,  H04B7/216 ,  H04W52/14 ,  H04W52/16 ,  H04W52/38 ,  H04W52/42 ,  H04W52/50 ,  H04W52/56 ,  H04L41/0668 ,  H04W24/08 ,  H04L1/00 ,  H04L1/18 ,  H04W24/02 ,  H04W76/19 ,  H04W24/04 ,  H04W48/08 ,  H04W92/20

Abstract: Various aspects of the disclosure relate to event triggers for independent links. For example, an event trigger may be based on measurements from multiple links. In some aspects, the independent links may involve a first device (e.g., a user equipment) communicating via different independent links with different devices (e.g., transmit receive points (TRPs) or sets of TRPs). For example, the first device may communicate with a second device (e.g., a TRP) via a first link and communicate with a third device (e.g., a TRP) via a second link. In some scenarios, an event trigger may be based on aggregated measurements from multiple links.

公开(公告)号：US20220132408A1

公开(公告)日：2022-04-28

申请号：US17647698

申请日：2022-01-11

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Andrei Dragos Radulescu ,  Tamer Kadous ,  Jing Sun ,  Xiaoxia Zhang ,  Taesang Yoo

IPC: H04W48/16 ,  H04W74/04 ,  H04W72/04 ,  H04W28/26

Abstract: A discovery measurement timing configuration (DMTC) window reservation signal is disclosed for new radio (NR) shared spectrum (NR-SS) networks. The DMTC window is defined providing a reserved location for transmission of essential control signaling and potentially high priority traffic that may be transmitted in a prioritized manner. Access within the DMTC window may be provided with a clear channel assessment (CCA) exempt transmission (CET) option or a non-CET option. When the CET option is used, the reservation duration and period may be conveyed through the channel reservation signal. User equipments (UEs) that detect the reservation signal may re-transmit with added offset to inform neighboring base station that may not be within range of the serving base station. Base station that receive either the transmitted or re-transmitted reservation signal will refrain from communications that may interfere with the reception at the UEs.

公开(公告)号：US11284424B2

公开(公告)日：2022-03-22

申请号：US16803912

申请日：2020-02-27

Applicant: QUALCOMM Incorporated

Inventor： Arumugam Chendamarai Kannan ,  Chirag Patel ,  Tao Luo ,  Tamer Kadous

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

Abstract: Methods, systems, and devices for wireless communication are described. The payload size for uplink transmissions of unscheduled control information may vary and, in some cases, may be dynamically determined. A user equipment (UE) may determine a payload size or may select a payload size from a set of predetermined sizes. A base station may independently determine the same payload size or it may blindly detect the payload size upon receiving the uplink (UL) transmission. Or the base station may indicate the payload size to the UE. Additionally, UL grants issued to the UE may take one of several forms (e.g., different downlink control indicator formats), and characteristics of the grant may indicate information about resources assigned by the grant, including a location of the resources among various transmission opportunities or whether the grant is for multiple subframes.

公开(公告)号：US11272526B2

公开(公告)日：2022-03-08

申请号：US16405339

申请日：2019-05-07

Applicant: QUALCOMM Incorporated

Inventor： Kaushik Chakraborty ,  Xiaoxia Zhang ,  Jing Sun ,  Tamer Kadous

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

Abstract: Wireless communications systems and methods related to operating in a network deployed in a downlink (DL) unlicensed band and an uplink (UL) licensed band are provided. A first wireless communication device communicates, with a second wireless communication device, a first downlink communication signal in a downlink unlicensed band of a network. The first wireless communication device communicates, with the second wireless communication device, a second downlink communication signal in an uplink licensed band of the network. The second downlink communication signal includes at least one of a synchronization signal block (SSB), system information, a random access response, a contention resolution message, paging information, a downlink feedback signal, or low-latency data.

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：US11223505B2

公开(公告)日：2022-01-11

申请号：US16513350

申请日：2019-07-16

Applicant: QUALCOMM INCORPORATED

Inventor： Xiaoxia Zhang ,  Jing Sun ,  Tamer Kadous

IPC: H04L27/26 ,  H04W16/28 ,  H04W72/04 ,  H04L5/00

Abstract: Wireless communications systems and methods related to multiplexing different waveforms in wireless networks are provided. A first wireless communication device identifies a configuration for communicating a first waveform signal before a guard interval (GI)-based waveform signal, the configuration indicating a GI waveform requirement of the GI-based waveform signal. The first wireless communication device communicates, with a second wireless communication device, the first waveform signal including a plurality of first symbols carrying data, wherein a last symbol of the plurality of first symbols includes a portion without data transmission based on the GI waveform requirement.

公开(公告)号：US20210385824A1

公开(公告)日：2021-12-09

申请号：US17406683

申请日：2021-08-19

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Arumugam Chendamarai Kannan ,  Yisheng Xue ,  Xiaoxia Zhang ,  Tamer Kadous

IPC: H04W72/12 ,  H04W52/28 ,  H04W72/04 ,  H04W72/10 ,  H04W74/08

Abstract: A method of wireless communication may include determining a communication operation between a base station and one or more served UEs. The method may further include monitoring for radio frequency (RF) energy on a communication channel at a beginning of a listen before talk (LBT) window of a current frame in a shared spectrum shared between at least one or more opportunistic general authorized users. The method may further include transmitting an LBT trigger signal in response to detection of no RF energy above a minimum energy threshold at the beginning of the LBT window. The method may further include receiving an LBT trigger response signal from the one or more served UEs. The method may also include communicating, by the base station, with the one or more UEs during a channel occupancy time (COT) of the current frame after the LBT window.