公开(公告)号：US11019605B2

公开(公告)日：2021-05-25

申请号：US16144539

申请日：2018-09-27

Applicant: QUALCOMM Incorporated

Inventor： Arumugam Chendamarai Kannan ,  Sanaz Barghi ,  Aleksandar Damnjanovic ,  Tamer Kadous

IPC: H04W72/04 ,  H04W74/08 ,  H04W74/00 ,  H04L5/00 ,  H04W72/08 ,  H04W28/26 ,  H04L1/00 ,  H04L1/08 ,  H04L5/14 ,  H04L1/18

Abstract: Methods, systems, and devices for wireless communications are described. A receiving wireless device may determine that a data communication is scheduled for the wireless device on a channel of a shared radio frequency spectrum band during a transmission opportunity (TxOP) spanning a plurality of slots. The receiving wireless device may identify a subset of slots from the plurality of slots, wherein the subset of slots is associated with a channel reservation signal by the wireless device. The receiving wireless device may receive the data communication at the wireless device during the TxOP using a beam configuration. The receiving wireless device may perform repeated transmissions of the channel reservation signal based at least in part on the beam configuration during the subset of slots and within a time period associated with receiving the data communication.

公开(公告)号：US10785799B2

公开(公告)日：2020-09-22

申请号：US16189795

申请日：2018-11-13

Applicant: QUALCOMM Incorporated

Inventor： Arumugam Chendamarai Kannan ,  Sanaz Barghi ,  Vinay Chande ,  Aleksandar Damnjanovic

IPC: H04W74/08 ,  H04B17/345 ,  H04B7/06 ,  H04W24/10 ,  H04W48/16 ,  H04W72/12 ,  H04W72/04 ,  H04W16/28 ,  H04W16/14

Abstract: Methods, systems, and devices for wireless communications are described. A wireless device (e.g., a user equipment and/or base station) may select a beam configuration for a wireless transmission over a channel of a radio frequency spectrum band. The wireless device may perform a listen-before-talk (LBT) procedure on the channel using a LBT detection threshold, wherein the LBT detection threshold is based at least in part on the selected beam configuration. The wireless device may perform the wireless transmission over the channel using the selected beam configuration based at least in part on a success of the LBT procedure.

公开(公告)号：US20190104546A1

公开(公告)日：2019-04-04

申请号：US16140431

申请日：2018-09-24

Applicant: QUALCOMM Incorporated

Inventor： Arumugam Chendamarai Kannan ,  Ahmed Kamel Sadek ,  Aleksandar Damnjanovic ,  Sanaz Barghi ,  Tamer Kadous

IPC: H04W74/08 ,  H04W16/14 ,  H04W72/08 ,  H04W72/04 ,  H04B7/06 ,  H04W24/10 ,  H04B17/345

Abstract: Methods, systems, and devices for wireless communications are described. A wireless device may determine an interference status of each beam configuration of a plurality of active beam configurations for a shared radio frequency spectrum band. The wireless device may determine a beam-specific listen-before-talk (LBT) requirement for each beam configuration of the plurality of active beam configurations based at least in part on the determined interference status of each beam configuration. The wireless device may selectively enable an LBT procedure on a per-beam basis according to the determined beam-specific LBT requirement for each beam configuration.

公开(公告)号：US20180091980A1

公开(公告)日：2018-03-29

申请号：US15642384

申请日：2017-07-06

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Taesang Yoo ,  Xiaoxia Zhang ,  Sanaz Barghi ,  Juan Montojo

IPC: H04W16/14 ,  H04W74/08

CPC classification number: H04W16/14 ,  H04W74/0808 ,  H04W74/0816

Abstract: Aspects of the disclosure relate to wireless communication systems configured to share a shared spectrum with one or more other systems (e.g., other operator networks utilizing the same radio access technology, and/or other networks utilizing different radio access technologies). Coexistence between the different systems on the shared spectrum may be provided by utilizing a technology-neutral signature waveform such as a signature sequence. A device or system may monitor a shared spectrum channel for the signature waveform, and when detected, may determine whether the shared spectrum is available for that system, or busy as occupied by another system. When the shared spectrum channel is idle, the device or system may reserve the channel by transmitting the signature waveform. Other aspects, embodiments, and features are also claimed and described.