公开(公告)号：US20190020529A1

公开(公告)日：2019-01-17

申请号：US16030335

申请日：2018-07-09

Applicant: QUALCOMM Incorporated

Inventor： Jing LEI ,  Jing SUN ,  Tamer KADOUS

IPC: H04L27/36 ,  H04L27/38

Abstract: Certain aspects of the present disclosure generally relate to wireless communication. More particularly, aspects of the present disclosure provide multiplexing schemes which may be suited for the single carrier waveform. For example, some techniques and apparatuses described herein permit multiplexing of multiple, different data streams without destroying the single-carrier properties of the waveform. Additionally, or alternatively, some techniques and apparatuses described herein may provide unequal error protection, unequal bandwidth allocation, and/or the like as part of the multiplexing schemes. Examples of multiplexing schemes described herein include in-phase/quadrature (I/Q) multiplexing, superposition quadrature amplitude modulation (QAM) based at least in part on layered bit mapping, polarization division multiplexing of QAM with superposition coding, and frequency division multiplexing using UE-specific beams.

公开(公告)号：US20190020461A1

公开(公告)日：2019-01-17

申请号：US15991829

申请日：2018-05-29

Applicant: QUALCOMM Incorporated

Inventor： Srinivas YERRAMALLI ,  Chih-Hao LIU ,  Tamer KADOUS

IPC: H04L5/14 ,  H04L1/00 ,  H04L5/00

Abstract: A method, an apparatus, and a computer program for wireless communication that allows for greater scheduling flexibility of physical resources are disclosed. A UE receives information from a base station about a time division duplex (TDD) frame structure of a plurality of frames that include a plurality of subframes. The UE determines a control channel search space within the plurality of subframes based on the information. The UE determines a search strategy including a maximum aggregation level based on the control channel search space. The UE performs a blind decoding of the control channel search space with the search strategy to obtain control information. The control channel search space may include a size and a location of a subset of the DL subframes allowed to carry the control information. The UE may determine a plurality of UL subframes assigned for transmitting scheduled UL resources associated with a UL control signaling.

公开(公告)号：US20180287870A1

公开(公告)日：2018-10-04

申请号：US15847737

申请日：2017-12-19

Applicant: QUALCOMM Incorporated

Inventor： Srinivas YERRAMALLI ,  Chih-Hao LIU ,  Tamer KADOUS

IPC: H04L12/24 ,  H04W72/04

Abstract: In order to conserve power resources for low complexity UEs, a base station may apparatus dynamically adjust a bandwidth configuration of a UE or the base station and communicates with the UE according to the dynamically adjusted bandwidth configuration. The communication may be narrowband communication. A UE may apparatus dynamically adjust a bandwidth configuration of the UE and communicates with a base station based on the dynamically adjusted bandwidth configuration. The dynamically adjusted bandwidth configuration may correspond to a function performed by the UE.

公开(公告)号：US20180139618A1

公开(公告)日：2018-05-17

申请号：US15812810

申请日：2017-11-14

Applicant: QUALCOMM Incorporated

Inventor： Srinivas YERRAMALLI ,  Tamer KADOUS ,  Chirag Sureshbhai PATEL ,  Chih-Hao LIU ,  Alberto RICO ALVARINO

IPC: H04W16/14 ,  H04L5/00 ,  H04W72/04 ,  H04W72/12

CPC classification number: H04W16/14 ,  H04B1/713 ,  H04J2011/0016 ,  H04L1/1671 ,  H04L1/1812 ,  H04L1/1896 ,  H04L5/001 ,  H04L5/0048 ,  H04L5/0055 ,  H04L5/0057 ,  H04L27/0006 ,  H04L27/2602 ,  H04W72/042 ,  H04W72/1215 ,  H04W72/14 ,  H04W74/0808

Abstract: Certain aspects of the present disclosure provide techniques for transmitting and receiving self-contained transmissions for enhanced machine type communications (eMTC) in unlicensed spectrum (eMTC-U). An exemplary method includes a BS determining, based on a listen before talk (LBT) procedure, that a first portion of unlicensed radio frequency spectrum is available for a frame, transmitting, on the first portion of the unlicensed radio frequency spectrum, a control channel indicating a frame format of the frame or a grant of the first portion of the unlicensed radio frequency spectrum for the frame, and communicating with a user equipment (UE) according to the frame format or the grant during the frame.

公开(公告)号：US20180132236A1

公开(公告)日：2018-05-10

申请号：US15464998

申请日：2017-03-21

Applicant: QUALCOMM Incorporated

Inventor： Tamer KADOUS

IPC: H04W72/04 ,  H04L1/00 ,  H04B7/0408 ,  H04W72/12

CPC classification number: H04W72/0446 ,  H04B7/0408 ,  H04B7/0617 ,  H04B7/0695 ,  H04L1/0002 ,  H04W72/046 ,  H04W72/12 ,  H04W74/004 ,  H04W74/0816

Abstract: Wireless communications systems and methods related to solving deafness problems in directional clear channel assessment (CCA) procedures. A first wireless communication device transmits, to a second wireless communication device in a first beam direction, a first channel reservation for receiving a data burst. The first wireless communication device receives, from the second wireless communication device, a first portion of the data burst. The first wireless communication device transmits, in the first beam direction, a second channel reservation for receiving one or more remaining portions of the data burst. The first wireless communication device receives, from the second wireless communication device, a second portion of the data burst. Other aspects, embodiments, and features are also claimed and described.

公开(公告)号：US20250097140A1

公开(公告)日：2025-03-20

申请号：US18965868

申请日：2024-12-02

Applicant: QUALCOMM Incorporated

Inventor： Tao LUO ,  Juan MONTOJO ,  Tamer KADOUS ,  Junyi LI ,  Xiaoxia ZHANG ,  Jing SUN ,  Taesang YOO ,  Siddhartha MALLIK

IPC: H04L45/16 ,  H03M13/09 ,  H04B7/06 ,  H04B7/216 ,  H04B17/24 ,  H04B17/318 ,  H04L1/00 ,  H04L1/1829 ,  H04L5/00 ,  H04L12/18 ,  H04L41/0668 ,  H04W24/02 ,  H04W24/04 ,  H04W24/08 ,  H04W48/08 ,  H04W52/14 ,  H04W52/16 ,  H04W52/24 ,  H04W52/34 ,  H04W52/38 ,  H04W52/42 ,  H04W52/50 ,  H04W52/54 ,  H04W52/56 ,  H04W72/044 ,  H04W72/12 ,  H04W72/20 ,  H04W72/21 ,  H04W72/52 ,  H04W72/53 ,  H04W72/54 ,  H04W76/19 ,  H04W76/22 ,  H04W92/20

Abstract: Various aspects of the disclosure relate to power control for independent links. For example, power control at a device may be based on transmissions on 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, power control for the first device may be based on power control commands received on multiple links. In some scenarios, a power control constraint may be met taking into account the transmission power on multiple links.

公开(公告)号：US20220060216A1

公开(公告)日：2022-02-24

申请号：US17453458

申请日：2021-11-03

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar DAMNJANOVIC ,  Srinivas YERRAMALLI ,  Xiaoxia ZHANG ,  Tamer KADOUS ,  Yongbin WEI ,  Jing SUN ,  Andrei Dragos RADULESCU

IPC: H04B1/7143 ,  H04B1/7156 ,  H04L27/26 ,  H04B1/7136

Abstract: Techniques providing opportunistic frequency switching for frame based equipment (FBE), such as may be configured to minimize opportunistic frequency switching delay in FBE new radio (NR) unlicensed (NR-U) networks and/or to provide frequency diversity FBE access based on offset sequences of medium sensing occasions for the carrier frequencies are disclosed. Within the FBE mode network, a base station may configure a pattern of sensing locations in each frame for each frequency transmission unit of the plurality of frequency transmission units, wherein an inter-unit delay of sensing locations between a first frequency transmission unit and a next adjacent frequency transmission unit and between a last frequency transmission unit and the first frequency transmission unit is a fixed duration. Opportunistic frequency switching of embodiments may utilize the medium sensing locations for opportunistically switching between a sequence of the frequency transmission units for implementing frequency diversity FBE access.

公开(公告)号：US20210167885A1

公开(公告)日：2021-06-03

申请号：US16711768

申请日：2019-12-12

Applicant: QUALCOMM Incorporated

Inventor： Jing SUN ,  Tao LUO ,  Tamer KADOUS ,  Juan MONTOJO ,  Xiao Feng WANG ,  Sony AKKARAKARAN

IPC: H04J11/00 ,  H04W48/12 ,  H04L5/00 ,  H04W72/12

Abstract: User equipment associated with a legacy network may utilize a bottom-to-top search technique to identify relevant control channel samples. Generating a control channel that is configured for the bottom-to-top search technique may lead to poor performance in a single-carrier waveform, which may be disadvantageous as networks move toward New Radio. In some aspects, described herein, a base station generates a control channel that is configured to minimize gaps in the control channel, and a user equipment performs a top-to-bottom search technique to identify relevant control channel samples. By using the top-to-bottom search technique, degradation of single-carrier waveforms is reduced and efficiency is improved.

公开(公告)号：US20200328777A1

公开(公告)日：2020-10-15

申请号：US16911180

申请日：2020-06-24

Applicant: QUALCOMM Incorporated

Inventor： Chih-Hao LIU ,  Srinivas YERRAMALLI ,  Tamer KADOUS

IPC: H04B1/7143 ,  H04B1/7136 ,  H04L5/00 ,  H04W16/14 ,  H04B1/713

Abstract: In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. In one example, the apparatus may be a base station. In certain configurations, the apparatus may transmit information indicating a narrowband frequency hopping pattern to at least one UE. In certain aspects, the narrowband frequency hopping pattern may correspond to a plurality of frames. In certain other aspects, the plurality of frames may include at least one non-anchor channel and being associated with a plurality of anchor channels. The apparatus may communicate with the at least one UE using the narrowband frequency hopping pattern, including concurrently transmitting a discovery reference signal (DRS) in each of the plurality of anchor channels at a start of each hopping frame. In certain aspects, communication on the plurality of anchor channels may occur during the same frames.

公开(公告)号：US20200045744A1

公开(公告)日：2020-02-06

申请号：US16526682

申请日：2019-07-30

Applicant: QUALCOMM Incorporated

Inventor： Jing SUN ,  Kapil BHATTAD ,  Aleksandar DAMNJANOVIC ,  Tamer KADOUS ,  Taesang YOO ,  Xiaoxia ZHANG

IPC: H04W74/08 ,  H04W72/12 ,  H04W88/12

Abstract: Aspects directed towards facilitating multi-node listen before talk (LBT) functionality via a centralized controller are disclosed. In one example, for each of a plurality of scheduled entities, a corresponding set of scheduling entities is identified, and each scheduling entity of the set of scheduling entities is instructed to perform at least one LBT evaluation. This example then further includes controlling whether any of the plurality of scheduled entities is served by a corresponding one or more scheduling entities of the set of scheduling entities based on the at least one LBT evaluation performed by each scheduling entity.