公开(公告)号：US20190141744A1

公开(公告)日：2019-05-09

申请号：US16160263

申请日：2018-10-15

Applicant: QUALCOMM Incorporated

Inventor： Mohammad Naghshvar ,  Arumugam Chendamarai Kannan ,  Ahmed Kamel Sadek ,  Tamer Kadous

IPC: H04W74/08 ,  H04B7/0452 ,  H04B7/06

Abstract: Methods, systems, and devices for wireless communications are described. A wireless device may include a plurality of antenna panels. The wireless device may perform a first listen before talk (LBT) procedure for a configuration of a first antenna panel based at least in part on a first LBT timer and may perform a second LBT procedure for a configuration of a second antenna panel based at least in part on a second LBT timer. The wireless device may then perform a multiple user multiple-input multiple-output (MU-MIMO) transmission. The MU-MIMO transmission may include transmitting a first packet to a second wireless device using the configuration of the first antenna and transmitting a second packet to a third wireless device using the configuration of the second antenna.

公开(公告)号：US20190110302A1

公开(公告)日：2019-04-11

申请号：US16129545

申请日：2018-09-12

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Vikas Jain ,  Taesang Yoo ,  Tamer Kadous ,  Yongbin Wei

IPC: H04W72/12 ,  H04L1/18

Abstract: Wireless communications systems and methods related to determining scheduling and transmission timeline for communicating in a shared communication medium are provided. A first wireless communication device communicates, with a second wireless communication device, scheduling information during a first time period of a first transmission opportunity (TXOP) of a first network operating entity in a shared communication medium, the scheduling information indicating an offset time period relative to the first time period. The first wireless communication device communicates, with the second wireless communication device, a communication signal during a second TXOP subsequent to the first TXOP based on the offset time period.

公开(公告)号：US20190110254A1

公开(公告)日：2019-04-11

申请号：US16153166

申请日：2018-10-05

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Rahul Malik ,  Tamer Kadous

IPC: H04W52/02 ,  H04W56/00 ,  H04W72/04 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communications are described that asynchronous carrier aggregation, including between high frequency band and lower frequency band transmissions. A user equipment (UE) may be configured to monitor transmissions in a first frequency band and a second frequency band. The UE may measure a timing difference between transmissions in the first frequency band and one or more of the transmissions in the second frequency band, and transmit an indication of the timing difference to a base station. The base station may use the timing difference to determine whether the UE is to use asynchronous carrier aggregation. If the base station determines that the UE is to use asynchronous carrier aggregation, the base station may configure the UE to observe at least a minimum amount of delay when conducting uplink signaling via one of the frequency bands.

公开(公告)号：US20190090273A1

公开(公告)日：2019-03-21

申请号：US16046500

申请日：2018-07-26

Applicant: QUALCOMM Incorporated

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

IPC: H04W74/08 ,  H04W72/08 ,  H04L12/26 ,  H01Q1/24 ,  H01Q21/00

Abstract: Quasi-colocation (QCL) for listen before talk (LBT) procedures is disclosed. A base station having a plurality of antennas may identify one or more groups of QCL antennas. Various aspects provide for different rules defining the QCL relationship, such as base on interference experienced by the antennas, a physical or logical connection of the antennas and LBT coupling, or synchronization. QCL may further be determined across multiple shared channels, such as based on frequency separation or frequency band of the channels. Once grouped as QCL, the base station performs the LBT procedure to reserve access to the one or more shared communication channels. If the LBT is successful, the base station may then transmit a channel reservation preamble on the shared communication channels in response.

公开(公告)号：US20190082333A1

公开(公告)日：2019-03-14

申请号：US16123899

申请日：2018-09-06

Applicant: QUALCOMM Incorporated

Inventor： Rahul Malik ,  Srinivas Yerramalli ,  Kaushik Chakraborty ,  Tamer Kadous

IPC: H04W24/02 ,  H04B7/0408

Abstract: Methods, systems, and devices for wireless communications are described that provide for partitioning two or more dimensions of an uplink transmission, where different partitions in each partitioned dimension can be used to provide different feedback information. A UE may measure one or more downlink transmissions from a base station (e.g., beam measurements in a beam sweep procedure), and select a partition of one of the partitioned dimensions to indicate feedback related to the measured downlink transmissions. The feedback may indicate, for example, a particular beam that may be used for an active beam pair, beam refinement information, or other feedback. The partitioned dimensions may include one or more of time resource, a frequency resource dimension, a root sequence dimension, a cyclic shift dimension, a time-frequency dimension, or any combination thereof.

公开(公告)号：US20190059102A1

公开(公告)日：2019-02-21

申请号：US16103434

申请日：2018-08-14

Applicant: QUALCOMM Incorporated

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

IPC: H04W74/08 ,  H04L5/00 ,  H04L1/18 ,  H04W72/04 ,  H04L5/14 ,  H04W4/70 ,  H04W76/27

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for receiving ACK/NACK reporting in unlicensed IoT systems with long transmission durations. In one example, an eNodeB executes an LBT protocol to gain access to a channel of a shared spectrum, receives radio resource management (RRM) measurement reports from an IoT-U, estimates a number of repetitions used to schedule the IoT-U based on the RRM measurement, and configures the maximum number of HARQ processes that can be scheduled in a frame based on the RRM measurements and the estimate of the repetitions.

公开(公告)号：US20180295622A1

公开(公告)日：2018-10-11

申请号：US15791161

申请日：2017-10-23

Applicant: QUALCOMM Incorporated

Inventor： Ahmed Kamel Sadek ,  Tamer Kadous

IPC: H04W72/04 ,  H04W16/14

Abstract: Techniques are described herein to selectively protect some resources of a transmission opportunity, but not all resources of a transmission opportunity. A base station may schedule resources to be used to communicate data with a user equipment (UE). To indicate to potential interference sources, a silencing message may broadcast to other network entities. The silencing message may include an indication of resources to be protected for a transmission between the base station and the UE. The silencing message may indicate a subset of resources that is less than a set of all resources of a transmission opportunity. In some examples, the silencing message may indicate a subset of frequency subbands of the transmission opportunity. In response to the silencing message, potential interference sources may refrain from communicating data during the indicated subset of resources.

公开(公告)号：US20180288781A1

公开(公告)日：2018-10-04

申请号：US15910710

申请日：2018-03-02

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/12 ,  H04J1/02 ,  H04W72/04 ,  H04L5/00

Abstract: Aspects of the disclosure relate to methods and apparatus of wireless communication to support frequency division multiplexing (FDM) of multiple waveforms. The methods and apparatus schedule FDM symbols where the scheduling of the FDM symbols is selectively based on one or more waveform parameters during a time interval when the FDM symbols are transmitted. The FDM symbols are then transmitted over the time interval. Further aspects also include the reception of the FDM symbols in a receiver where the waveform parameters are applied for decoding based on the waveform parameters.

公开(公告)号：US20180269962A1

公开(公告)日：2018-09-20

申请号：US15919127

申请日：2018-03-12

Applicant: QUALCOMM Incorporated

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

IPC: H04B7/26 ,  H01Q1/24 ,  H04B7/0491 ,  H04W16/14 ,  H04W72/08 ,  H04W16/24 ,  H04W8/00 ,  H04W88/04

CPC classification number: H04B7/2606 ,  H01Q1/246 ,  H04B7/0491 ,  H04B7/0689 ,  H04W4/70 ,  H04W8/005 ,  H04W16/14 ,  H04W16/24 ,  H04W36/06 ,  H04W36/305 ,  H04W48/18 ,  H04W72/082 ,  H04W74/08 ,  H04W88/04 ,  H04W88/06

Abstract: Described techniques provide for switching a user equipment (UE) between different coverage enhancement (CE) modes, such as between a non-CE mode and a CE mode. A UE may determine that a CE mode switch is to be performed and may initiate the mode switching. The UE may compare signal qualities of signals from one or more base stations against one or more threshold values and determine that a switch from a CE mode to a non-CE mode, or from a non-CE to CE mode, is to be performed. In some cases, a UE may be in idle mode and switch between CE modes, or may perform a cell reselection to a different base station. In other cases, a UE may be in connected mode and may declare a radio link failure to initiate a mode switch. A base station may initiate mode switching based on radio link monitoring of UEs.

公开(公告)号：US20180255584A1

公开(公告)日：2018-09-06

申请号：US15669772

申请日：2017-08-04

Applicant: Qualcomm Incorporated

Inventor： Jing Sun ,  Tao Luo ,  Tamer Kadous ,  Ahmed Sadek

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

CPC classification number: H04W74/0825 ,  H04W16/14 ,  H04W24/08 ,  H04W56/001 ,  H04W72/0453 ,  H04W74/0816 ,  H04W74/0866

Abstract: Methods, systems, and devices for wireless communication are described. A wireless device may use a subband of a frequency domain channel as a dedicated channel reservation (CR) sub-channel. Wireless devices may both monitor for and transmit CR signals in the CR subband. When not actively transmitting, a wireless device may monitor the CR subband to identify CR signals from other wireless devices. A wireless device communicating using the CR subband may transmit a CR signal and a pre-grant or pre-grant response simultaneously based on an frequency division multiplexing configuration. Multiple channels may share a CR subband. The CR subband may have a pre-configured frequency domain location or be at a configurable frequency in the channel. The data subband and CR subband may have different levels of synchronization, and base stations operating in the wireless communications system may consider data subband synchronization and CR subband synchronization separately.