公开(公告)号：US11184777B2

公开(公告)日：2021-11-23

申请号：US16513283

申请日：2019-07-16

Applicant: QUALCOMM Incorporated

Inventor： Yisheng Xue ,  Aleksandar Damnjanovic ,  Tamer Kadous ,  Xiaoxia Zhang ,  Jing Sun ,  Yongbin Wei

IPC: H04W16/14 ,  H04W72/14 ,  H04W72/10 ,  H04W24/08 ,  H04W74/08

Abstract: Methods, systems, and devices for wireless communications are described. A base station of a first network operator (OP) may determine a priority for the first OP for a transmission opportunity of a shared or unlicensed channel. The priority may be lower than a priority of a second OP for the transmission opportunity. Base station may transmit a tentative grant to a user equipment (UE) of the first OP scheduling transmissions over resources of the transmission opportunity. The transmitting device of the first OP may monitor a contention window for reservation signals communicated by devices of the second OP. Based on the monitoring and the tentative grant, the transmitting device of the first OP may perform the transmission over the resources of the shared or unlicensed channel.

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：US11115852B2

公开(公告)日：2021-09-07

申请号：US16716082

申请日：2019-12-16

Applicant: QUALCOMM Incorporated

Inventor： Chih-Hao Liu ,  Srinivas Yerramalli ,  Tamer Kadous

IPC: H04W24/10 ,  H04W72/04 ,  H04W4/70 ,  H04L5/00 ,  H04W16/14 ,  H04W48/16

Abstract: Various features related to eMTC-U deployment are described. In an aspect of the disclosure, an apparatus (e.g., a base station) maybe configured to select a subset of non-anchor channels from a set of available non-anchor channels, where the subset of non-anchor channels may correspond to a bandwidth within an unlicensed band. The apparatus maybe further configured to transmit information indicating the subset of non-anchor channels via an anchor channel. In some configurations, the subset of non-anchor channels maybe selected based on channel measurements performed by the base station or a UE. In one aspect, a UE may receive, from a base station via an anchor channel, information indicating a subset of non-anchor channels selected from a set of available non-anchor channels. The UE may transmit data on one or more non-anchor channel of the subset of non-anchor channels.

公开(公告)号：US11109285B2

公开(公告)日：2021-08-31

申请号：US16420075

申请日：2019-05-22

Applicant: QUALCOMM Incorporated

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

IPC: H04W36/00 ,  H04W36/30

Abstract: Aspects of the present disclosure provide a mechanism for improving reliability in a wireless communication network supporting a multi-cell transmission environment including a primary cell (PCell) and one or more secondary cells (SCells). In some examples, a user equipment (UE) in a connected mode with a PCell for multi-cell communication with the PCell and one or more SCells may utilize link quality measurements on both the PCell and one or more SCells to manage the connection with the PCell. In other examples, one or more SCells may function as a PCell to transmit common control signaling to the UE and/or receive uplink control information from the UE. In other examples, a UE in an idle mode may evaluate the reference signals transmitted from the PCell and one or more potential SCells before deciding whether to connect to the PCell for multi-cell communication.

公开(公告)号：US11102763B2

公开(公告)日：2021-08-24

申请号：US16212402

申请日：2018-12-06

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Chih-Hao Liu ,  Tamer Kadous

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

Abstract: Methods, systems, and devices for wireless communications are described for multiplexing of uplink channels in a shared radio frequency spectrum band. Techniques may provide for segmenting uplink resources into multiple different sets of uplink resources, each set of uplink resources having one or more associated uplink control channel resources. A base station or user equipment (UE) may select a set of uplink resources from the multiple sets of uplink resources for uplink transmissions from the UE based on a location of the uplink control channel resources of the set of uplink resources relative to other allocated uplink resources of the UE. Uplink control information (UCI) may be multiplexed with one or more uplink shared channel transmissions of a UE for transmission to a base station in certain circumstances.

公开(公告)号：US20210250779A1

公开(公告)日：2021-08-12

申请号：US17302263

申请日：2021-04-28

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Zhifei Fan ,  Andrei Dragos Radulescu ,  Srinivas Yerramalli ,  Tamer Kadous

IPC: H04W16/26

Abstract: Wireless communications systems and methods related to on-demand cell coverage extension for broadcast signals are provided. A first wireless communication device communicates, with a second wireless communication device, a first extended cell coverage request. The first wireless communication device communicates, with the second wireless communication device, a first broadcast communication signal in an extended cell coverage mode in response to the first extended cell coverage request. The first broadcast communication signal includes a system information block repeated in at least one of a time domain or a frequency domain.

公开(公告)号：US11089575B2

公开(公告)日：2021-08-10

申请号：US16380778

申请日：2019-04-10

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Aleksandar Damnjanovic ,  Xiaoxia Zhang ,  Tamer Kadous ,  Chih-Hao Liu ,  Seyed Ali Akbar Fakoorian ,  Andrei Dragos Radulescu

IPC: H04W4/00 ,  H04W72/04 ,  H04L5/00

Abstract: In various aspects, a base station and user equipment (UE) exchange an indication of UE capabilities and a monitoring schedule for the UE to monitor an integer M frequency band partitions for a predetermined signal. The base station performs one or more successful clear carrier assessments (CCAs) on an integer N frequency band partitions of the M frequency band partitions, wherein N

公开(公告)号：US11071138B2

公开(公告)日：2021-07-20

申请号：US16281429

申请日：2019-02-21

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/14 ,  H04L5/14 ,  H04W72/04 ,  H04L5/00 ,  H04W72/12 ,  H04W74/08

Abstract: Over-the-air (OTA) dynamic time division duplex (TDD) is disclosed with a channel use indicator (CUI) receiver (CUI-R) signal multiplexed in uplink transmissions. According to various aspects, a user equipment (UE) may receive a downlink grant from a serving base station, in which the downlink grant identifies downlink transmissions in one or more subsequent communication slots. The UE may identify a trigger for transmission of a channel usage signal associated with the grant that may be received by neighboring UEs that may potentially interfere. The UE transmits the channel usage signal in a next scheduled uplink region and then receives downlink data from the serving base station according to the downlink grant. If the neighboring UE receives a conditional uplink grant, then it may proceed with uplink transmissions when it fails to detect the channel usage signal from the UE.

公开(公告)号：US11063800B2

公开(公告)日：2021-07-13

申请号：US15936311

申请日：2018-03-26

Applicant: QUALCOMM Incorporated

Inventor： Sony Akkarakaran ,  Tao Luo ,  Jing Sun ,  Rahul Malik ,  Tamer Kadous ,  Akula Reddy

IPC: H04L27/26 ,  H04L5/00

Abstract: Aspects of the disclosure relate to synchronization signaling supporting multiple waveforms. A synchronization signal block (SSB) is configurable for transmission using either at least a first waveform or a second waveform, where the first waveform has higher peak to average power ratio (PAPR) characteristics such as OFDM and the second waveform has lower PAPR characteristics, such as DFT-S-OFDM. The SSB is transmitted selectively using either the first waveform or the second waveform for transmission of the SSB. Furthermore, the characteristics of the transmission such as a predetermined pattern of the first and second waveform transmissions may be utilized to communicate to a receiver the type of waveform being used. In this manner, SSB transmissions may take advantage of respective advantages afforded by each type of waveform, particularly when using higher frequency transmissions above 40 GHz in wireless communication systems.

公开(公告)号：US11051175B2

公开(公告)日：2021-06-29

申请号：US16104030

申请日：2018-08-16

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Tamer Kadous

IPC: H04W16/14 ,  H04L5/00 ,  H04L1/18 ,  H04L1/00 ,  H04W72/04 ,  H04W72/12 ,  H04W74/08 ,  H04B7/0413 ,  H04B7/06 ,  H04W74/00

Abstract: Methods, systems, and devices for wireless communication are described. The described techniques provide for transmission of uplink data from a user equipment (UE) in the absence of scheduled uplink resources for the uplink data transmission that are allocated to the UE prior to the transmission of the uplink data. Various examples provide uplink configurations that may be used for unscheduled uplink transmissions of a UE, which may be selected dynamically or semi-statically. Unscheduled uplink transmissions may be transmitted in shared radio frequency spectrum according to one or more frame structures, and access to the shared radio frequency spectrum may be determined based on a priority of an operator associated with a UE for accessing the spectrum. Beamforming techniques may be used for transmissions and beam widths may be selected based on the information in a transmission, an operator priority for use of shared radio frequency spectrum, or any combination thereof.