公开(公告)号：US20180124820A1

公开(公告)日：2018-05-03

申请号：US15801150

申请日：2017-11-01

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Tamer Kadous ,  Juan Montojo ,  Peter Pui Lok Ang ,  Xiaoxia Zhang ,  Taesang Yoo ,  Ahmed Kamel Sadek ,  Sanaz Barghi ,  Akula Reddy ,  Andrei Dragos Radulescu ,  Junyi Li

IPC: H04W72/14 ,  H04L5/00 ,  H04W72/04 ,  H04W8/08 ,  H04W74/08

CPC classification number: H04W72/14 ,  H04B7/0695 ,  H04B7/088 ,  H04L5/001 ,  H04L5/0048 ,  H04W8/08 ,  H04W72/0413 ,  H04W72/044 ,  H04W74/08 ,  H04W74/0816 ,  H04W88/02 ,  H04W88/08

Abstract: Methods, systems, and devices for wireless communication are described. A base station may transmit, using a first base station beam, a first message to a user equipment (UE). The first message may include a pre-grant communication and a plurality of downlink beam refinement reference signals (D-BRRSs). The base station may receive a second message from the UE in response to the first message. The second message may include a pre-grant acknowledgement and a plurality of uplink beam refinement reference signals (U-BRRSs). The base station may transmit, using a second base station beam, a third message to the UE. A width of the second base station beam may be less than a width of the first base station beam.

公开(公告)号：US20180123859A1

公开(公告)日：2018-05-03

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

CPC classification number: H04L29/0854 ,  H04L5/0048 ,  H04L5/005 ,  H04L5/0053 ,  H04L29/08018 ,  H04L29/08027 ,  H04L29/08423 ,  H04L67/1095 ,  H04L69/323 ,  H04L69/324 ,  H04W4/70 ,  H04W48/12

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：US20180098335A1

公开(公告)日：2018-04-05

申请号：US15482511

申请日：2017-04-07

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Tao Luo ,  Tamer Kadous

IPC: H04W72/12 ,  H04W16/28 ,  H04B7/06 ,  H04Q11/04 ,  H04B7/0417 ,  H04W74/00 ,  H04W72/04 ,  H04B7/0491 ,  H04B7/26

CPC classification number: H04W72/121 ,  H04B7/0417 ,  H04B7/0491 ,  H04B7/0617 ,  H04B7/2687 ,  H04Q11/04 ,  H04W16/14 ,  H04W16/28 ,  H04W72/042 ,  H04W72/1273 ,  H04W72/1289 ,  H04W74/002 ,  H04W74/006 ,  H04W74/008 ,  H04W74/0816

Abstract: Methods, systems, and devices for wireless communication are described. A base station may communicate with multiple user equipments (UEs) in a wireless system supporting directional transmission in shared spectrum (e.g., in millimeter wave (mmW) spectrum). The base station may contend for the channel (e.g., using a listen-before-talk (LBT) procedure) and, upon success, transmit a directional channel reservation (CR) signal to each of the multiple UEs. The CR signal may reserve the channel for a specific time period and indicate a start time, an end time, or both. The UE may respond with another CR transmission. In some examples, the base station may transmit CR signals to each of the UEs in a single burst transmission. In other examples, the base station may transmit CR signals to the UEs sequentially, so that if a UE does not respond, the reserved time may be allotted to another UE.

公开(公告)号：US20180054830A1

公开(公告)日：2018-02-22

申请号：US15659604

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: H04W72/12 ,  H04W76/04 ,  H04W24/08

Abstract: Various aspects of the disclosure relate to event triggers for independent links. For example, an event trigger may be based on measurements from 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, an event trigger may be based on aggregated measurements from multiple links.

公开(公告)号：US12113653B2

公开(公告)日：2024-10-08

申请号：US18467478

申请日：2023-09-14

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Srinivas Yerramalli ,  Xiaoxia Zhang ,  Tamer Kadous ,  Yongbin Wei ,  Jing Sun ,  Andrei Dragos Radulescu

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

CPC classification number: H04L27/2602 ,  H04B1/7136 ,  H04B1/7143 ,  H04B1/7156 ,  H04L27/2646 ,  H04B2001/71365 ,  H04B2001/71563

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：US11864115B2

公开(公告)日：2024-01-02

申请号：US17368202

申请日：2021-07-06

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Rahul Malik ,  Tamer Kadous

IPC: H04W52/02 ,  H04W56/00 ,  H04L5/00 ,  H04W72/0446 ,  H04L27/26 ,  H04L1/00 ,  H04W24/10 ,  H04W72/21

CPC classification number: H04W52/0251 ,  H04L1/001 ,  H04L5/001 ,  H04L5/0051 ,  H04L5/0078 ,  H04L27/2646 ,  H04L27/2655 ,  H04W56/001 ,  H04W72/0446 ,  H04L5/0055 ,  H04L5/0057 ,  H04W24/10 ,  H04W56/0065 ,  H04W72/21

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：US11855819B2

公开(公告)日：2023-12-26

申请号：US17541077

申请日：2021-12-02

Applicant: QUALCOMM INCORPORATED

Inventor： Xiaoxia Zhang ,  Jing Sun ,  Tamer Kadous

IPC: H04L27/26 ,  H04W16/28 ,  H04W72/0453 ,  H04L5/00

CPC classification number: H04L27/2607 ,  H04L5/0094 ,  H04W16/28 ,  H04W72/0453

Abstract: Wireless communications systems and methods related to multiplexing different waveforms in wireless networks are provided. A first wireless communication device identifies a configuration for communicating a first guard interval (GI)-based waveform signal after at least one of a second GI-based waveform signal or a cyclic prefix (CP)-based waveform signal. The first wireless communication device communicates, with a second wireless communication device, the first GI-based waveform signal including a plurality of first symbols, wherein a beginning symbol of the plurality of first symbols include repetitions of a reference signal sequence based on the configuration.

公开(公告)号：US11855780B2

公开(公告)日：2023-12-26

申请号：US17507543

申请日：2021-10-21

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Jing Sun ,  Tamer Kadous

IPC: H04L5/00 ,  H04L1/1607 ,  H04L1/00

CPC classification number: H04L1/1621 ,  H04L1/0073 ,  H04L1/0081 ,  H04L1/1671 ,  H04L5/0055

Abstract: Various aspects related to ACK/NACK feedback for multi-TRP transmission scenarios are described. A base station, may send, to a UE, information indicating PDCCH monitoring occasions for each of a plurality of TRPs. In one aspect, the base station may send information indicating whether ACK/NACK feedback across the plurality of TRPs is allowed. The base station may send rules to the UE for performing ACK/NACK feedback bundling for providing feedback to the plurality of TRPs. The base station may also send information indicating a DAI definition for interpreting DAIs transmitted by the plurality of TRPs in corresponding PDCCH transmissions indicating whether the DAIs are independent or joint. The base station may receive a joint ACK/NACK feedback from the UE in a PUCCH based on the rules, or may receive multiple ACK/NACK feedback from the UE in a PUCCH for a first TRP independent from a second TRP.

公开(公告)号：US11825515B2

公开(公告)日：2023-11-21

申请号：US17454023

申请日：2021-11-08

Applicant: QUALCOMM Incorporated

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

IPC: H04W74/00 ,  H04L5/00 ,  H04W16/14 ,  H04W72/0446 ,  H04W72/27

CPC classification number: H04W74/008 ,  H04L5/0032 ,  H04W16/14 ,  H04W72/0446 ,  H04W72/27

Abstract: Coordination of listen before talk (LBT) structure in new radio (NR) unlicensed (NR-U) multi-channel access operations is disclosed. In one aspect, when a base station determines to access shared communication spectrum, it may transmit an LBT structure signal that identifies the current LBT structure. The base station would then attempt access to the shared spectrum according to the LBT structure. In another aspect, a coordination server is used to manage access to the shared spectrum. Each node desiring access registers with the coordination server, which provides access parameters for the accessing node to use that increases the likelihood of successful access. The accessing nodes will transmit the selected access configuration used to access the shared spectrum, wherein the access configuration is selected based on the access parameters.

公开(公告)号：US11770851B2

公开(公告)日：2023-09-26

申请号：US16430095

申请日：2019-06-03

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Tamer Kadous ,  Taesang Yoo ,  Yisheng Xue ,  Arumugam Chendamarai Kannan ,  Jing Sun ,  Aleksandar Damnjanovic

IPC: H04W74/08 ,  H04L27/26 ,  H04W72/0446 ,  H04W16/14

CPC classification number: H04W74/0808 ,  H04L27/2666 ,  H04W16/14 ,  H04W72/0446

Abstract: Wireless communications systems and methods related to communicating in a frequency band across multiple adjacent carriers are provided. A first wireless communication device performs first sensing in a first sensing time designated for a first channel, the first channel being an operational channel of the first wireless communication device. The first wireless communication device performs second sensing in a second sensing time designated for a second channel adjacent to the first channel, the second channel being an operational channel of a second wireless communication device. The first wireless communication device communicates with a third wireless communication device in the first channel a communication signal in the first channel based on the first sensing and the second sensing.