公开(公告)号：US10554539B2

公开(公告)日：2020-02-04

申请号：US15659576

申请日：2017-07-25

Applicant: QUALCOMM Incorporated

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

IPC: H04W4/00 ,  H04L12/761 ,  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 ,  H04L12/24 ,  H04W76/22 ,  H04W24/08 ,  H04L1/00 ,  H04L1/18 ,  H04W24/02 ,  H04W76/19 ,  H04W24/04 ,  H04W48/08 ,  H04W92/20

Abstract: Various aspects of the disclosure relate to communicating control information for independent links. For example, control information for one link may be sent via at least one other link. 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). In some scenarios, one link may carry control information for multiple links. For example, one link may indicate the existence of or traffic on at least one other link. As another example, one link may transmit feedback for multiple links. In some scenarios, each link may be provisioned (e.g., as a primary link or a secondary link) to carry specific types of control information for one or more links.

公开(公告)号：US10548153B2

公开(公告)日：2020-01-28

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 ,  H04L5/00 ,  H04W72/04 ,  H04L27/26

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：US10548131B2

公开(公告)日：2020-01-28

申请号：US15635051

申请日：2017-06-27

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Tamer Kadous ,  Chih-Hao Liu ,  Chirag Patel ,  Alberto Rico Alvarino

IPC: H04W72/04 ,  H04W4/70 ,  H04L29/08 ,  H04W28/26 ,  H04L5/00 ,  H04W88/02 ,  H04W88/08

Abstract: A method and apparatus for wireless communication in the unlicensed spectrum between an eNB and UEs having different bandwidths, e.g., between a narrowband UE and a wideband eNB. A base station apparatus performs an LBT procedure at a beginning of frames and transmits a plurality of repetitions of a transmission. When the plurality of repetitions span multiple frames and the LBT procedure is not successful for a first frame, the base station drops or postpones at least one repetition in the first frame until a second frame when the LBT procedure is successful. A UE receives the plurality of repetitions and may combine a plurality of repetitions across multiple frames. The UE may determine whether the base station drops the at least one repetition in the first frame or postpones the at least one repetition in the first frame until a second frame.

公开(公告)号：US10547494B2

公开(公告)日：2020-01-28

申请号：US15697212

申请日：2017-09-06

Applicant: QUALCOMM Incorporated

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

IPC: H04L29/08

Abstract: This disclosure includes methods, systems, and devices for wireless communication. A repetition of symbols may be used to increase a device's ability to synchronize and communicate using unlicensed spectrum. For example, a base station may schedule a frame that includes repetitions, in time or frequency, of a control or data signal. After performing a listen-before-talk (LBT) procedure, the base station may broadcast or transmit the frame to one or more devices, such as a user equipment (UE). For instance, the frame may include repetitions of a discovery reference signal (DRS), and be broadcast by the base station to enable synchronization by the UE. In other examples, the signal may include repetitions of a cell-specific reference signal (CRS), and a UE may identify a start of a transmission opportunity using the CRSs. Other signals, such as downlink control and shared channels, may be repeated within a frame in a similar manner.

公开(公告)号：US10547422B2

公开(公告)日：2020-01-28

申请号：US15725762

申请日：2017-10-05

Applicant: QUALCOMM Incorporated

Inventor： Taesang Yoo ,  Xiaoxia Zhang ,  Seyed Ali Akbar Fakoorian ,  Ahmed Kamel Sadek ,  Siddhartha Mallik ,  Tamer Kadous

IPC: H04L5/00 ,  H04W74/08

Abstract: Sounding reference signal (SRS) transmission with implied request-to-send (RTS)/clear-to-send (CTS) operations is discussed. Two different types of SRS are defined, a legacy SRS associated with channel measurement sounding, and a contention SRS associated with contention resolution for medium sharing. The type of SRS may be distinguished based on the SRS resource associated with the particular type. Thus, legacy SRS are assigned to one SRS resource, while contention SRS are assigned to separate SRS resources. Therefore, when a neighbor node detects an SRS associated with the SRS resource for contention-type SRS, the neighbor node may know to refrain from transmission or to adjust or modify its communications depending on a spatial direction of the contention SRS.

公开(公告)号：US10542543B2

公开(公告)日：2020-01-21

申请号：US15635018

申请日：2017-06-27

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Tamer Kadous ,  Chih-Hao Liu ,  Chirag Patel ,  Alberto Rico Alvarino

IPC: H04W72/04 ,  H04W4/70 ,  H04L29/08 ,  H04W28/26 ,  H04L5/00 ,  H04W88/02 ,  H04W88/08

Abstract: A method and apparatus for wireless communication in the unlicensed spectrum between an eNB and UEs having different bandwidths, e.g., between a narrowband UE and a wideband eNB. A user equipment apparatus segments an uplink duration in each frame into multiple transmission units for each frequency, wherein a frame comprises an integer number of the transmission units. The apparatus transmits uplink communication based on the multiple transmission units, wherein each transmission unit comprises at least one on period and at least one off period corresponding to each of a plurality of frequencies, wherein during an on period the UE transmits uplink communication on the corresponding frequency and during an off period the UE refrains from transmitting uplink communication on the corresponding frequency. Each transmission unit may comprise multiple on periods and multiple off periods. The on/off periods may be configured by a base station or specified for each frame type.

公开(公告)号：US10536966B2

公开(公告)日：2020-01-14

申请号：US15811335

申请日：2017-11-13

Applicant: QUALCOMM Incorporated

Inventor： Chih-Hao Liu ,  Tamer Kadous ,  Srinivas Yerramalli ,  Chirag Sureshbhai Patel ,  Alberto Rico Alvarino

IPC: H04W4/00 ,  H04W72/14 ,  H04L1/18 ,  H04W72/12 ,  H04W16/14

Abstract: Techniques for wireless communication are described. One method includes assigning a downlink subframe that is a first occurring downlink subframe in a data frame; and transmitting an encoded control signal during a first transmission opportunity, the encoded control signal including a common portion for receiving devices, the common portion indicating a structure of the data frame, the encoded control signal further including a device specific portion for a specific receiving device, the device specific portion indicating uplink grants and downlink grants during the data frame for the specific receiving device, where at least the common portion of the encoded control signal is transmitted during the selected downlink subframe.

公开(公告)号：US20190335456A1

公开(公告)日：2019-10-31

申请号：US16391001

申请日：2019-04-22

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/04 ,  H04W74/08 ,  H04W72/12

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：US10461797B2

公开(公告)日：2019-10-29

申请号：US16242969

申请日：2019-01-08

Applicant: QUALCOMM Incorporated

Inventor： Chih-Hao Liu ,  Srinivas Yerramalli ,  Chirag Patel ,  Tamer Kadous ,  Hao Xu

IPC: H04B1/00 ,  H04B1/403 ,  H04B1/26 ,  H04B1/707 ,  H04B7/24 ,  H04B7/26 ,  H04L5/00 ,  H04L27/00 ,  H04W16/14 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communication are described. Resources for narrowband communication in an unlicensed radio frequency spectrum band may be configured and allocated based on resource availability, regulatory constraints, and device capability or category. A narrowband wireless device, such as a machine type communication device or other relatively low complexity device, may communicate using one or more narrowband carriers, which may occupy between one tone and multiple resource blocks in an unlicensed spectrum band (e.g., any number of resources between one (1) tone and multiple resource blocks (RBs)). Different device types may thus be configured differently as they move between geographic regions. The base station may then communicate with the narrowband mobile device based on the resource allocation and the carrier configuration.

公开(公告)号：US10455457B2

公开(公告)日：2019-10-22

申请号：US15985048

申请日：2018-05-21

Applicant: QUALCOMM Incorporated

Inventor： Ahmed Kamel Sadek ,  Yisheng Xue ,  Siddhartha Mallik ,  Tamer Kadous ,  Xiaoxia Zhang ,  Taesang Yoo ,  Michael Mingxi Fan ,  Aleksandar Damnjanovic ,  Yongbin Wei ,  Jing Sun

IPC: H04W28/26 ,  H04L5/00 ,  H04B7/06 ,  H04W52/24 ,  H04W16/14 ,  H04B17/336 ,  H04W74/08 ,  H04W84/04 ,  H04L5/14 ,  H04L27/00

Abstract: A medium reservation framework is disclosed for coexistence of coordinated and uncoordinated wireless networks in licensed spectrum and shared spectrum. The proposed medium reservation framework organically takes into account operating regimes with different numbers of Tx/Rx antennas per node, provides flexibility in trading off medium contention aggressiveness and power saving, leverages the inherent synchronization nature of NR, and covers both coordinated and uncoordinated operation scenarios. Various aspects of the medium reservation framework may be centered on one or more combinations of some basic building blocks, such as an operation grid, synchronization signals, and reservation messages, such as a reservation request signal (RRQ) and one or more a reservation response signals (RRS).