公开(公告)号：US11064439B2

公开(公告)日：2021-07-13

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 ,  H04L5/00 ,  H04W72/04 ,  H04L27/26 ,  H04L1/00 ,  H04W24/10

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：US11057885B2

公开(公告)日：2021-07-06

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 ,  H04W72/12 ,  H04W74/08

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：US11051263B2

公开(公告)日：2021-06-29

申请号：US15989698

申请日：2018-05-25

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Arumugam Chendamarai Kannan ,  Chih-Hao Liu ,  Tamer Kadous

IPC: H04J11/00 ,  H04W16/14 ,  H04W56/00 ,  H04L5/00 ,  H04L27/26 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communication are described. A base station may identify a first synchronization sequence and generate a second synchronization sequence based at least in part on the first synchronization sequence. The base station may map the first synchronization sequence to a first resource block of a synchronization channel associated with a first frequency sub-band of a shared radio frequency spectrum band and the second synchronization sequence to a second resource block associated with a second frequency sub-band of the synchronization channel. The base station may then transmit the first synchronization sequence and the second synchronization sequence concurrently over the synchronization channel using the first resource block and the second resource block according to the mapping. In some cases, the second synchronization may be generated by applying a first phase shift to the first synchronization sequence.

公开(公告)号：US11050531B2

公开(公告)日：2021-06-29

申请号：US16394518

申请日：2019-04-25

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Srinivas Yerramalli ,  Tamer Kadous ,  Yongbin Wei

IPC: H04L5/00 ,  H04W16/14 ,  H04W74/08 ,  H04W74/00 ,  H04W72/14 ,  H04W48/08

Abstract: Wireless communications systems and methods related to providing frequency diversity for communications in an unlicensed spectrum are provided. A first wireless communication device communicates, with a second wireless communication device, an opportunistic frequency-switching configuration for a first frequency band and a second frequency band. The first frequency band and the second frequency band are shared by a first network operating entity and a second network operating entity. The first wireless communication device communicates, with the second wireless communication device, a first communication signal in a first frequency band based on the opportunistic frequency-switching configuration. The first wireless communication device switches from the first frequency band to a second frequency band based on the opportunistic frequency-switching configuration. The first wireless communication device communicates, with the second wireless communication device after the switching, a second communication signal in the second frequency band based on the opportunistic frequency-switching configuration.

公开(公告)号：US20210185737A1

公开(公告)日：2021-06-17

申请号：US17135696

申请日：2020-12-28

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Jing Sun ,  Tamer Kadous

IPC: H04W74/08 ,  H04W72/04 ,  H04W72/12 ,  H04L5/00 ,  H04W28/18

Abstract: Synchronization signal block (SSB) multiplexing and remaining material system information (RMSI) monitoring in new radio unlicensed (NR-U) networks are disclosed. For SSB multiplexing, a user equipment (UE) receives an SSB configuration for a discovery signal detection window having a plurality of communication slots, wherein, based on the SSB configuration, UE identifies random access resource and time and frequency locations to monitor remaining minimum system information (RMSI) configured for each SSB. The UE further receives an SSB transmission indicator that reflects a listen before talk (LBT) result, which it may use with the SSB configuration to map one or more SSB for rate matching in selected slots. The UE can then rate match any data transmissions around the identified SSBs in those identified slots regardless of LBT result. The UE may further leverage the SSB configuration and indication of LBT result to monitor SSB transmissions for control resource set (CORESET) transmissions.

公开(公告)号：US11032808B2

公开(公告)日：2021-06-08

申请号：US15898987

申请日：2018-02-19

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/04 ,  H04B7/185 ,  H04L27/26 ,  H04B1/713 ,  H04L5/00 ,  H04B1/7156

Abstract: Methods, systems, and devices for wireless communication are described. A base station may identify control information to be transmitted, in a slot, to a user equipment (UE). The base station may determine a configuration for splitting a control resource set for the control information into a first component control resource set and a second component control resource set within a supported bandwidth of the UE. The first component control resource set may be frequency diverse and time diverse from the second component control resource set. The base station may transmit the configuration to the UE.

公开(公告)号：US11025296B2

公开(公告)日：2021-06-01

申请号：US16255645

申请日：2019-01-23

Applicant: QUALCOMM Incorporated

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

IPC: H04W24/08 ,  H04B1/713 ,  H04W72/04 ,  H04B7/26 ,  H04L12/413 ,  H04L5/00 ,  H04L12/46 ,  H04J11/00

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a discovery reference signal from a base station on an anchor channel. The UE may perform a first random or pseudorandom frequency hopping procedure to identify a plurality of downlink carriers for a first time period. The UE may perform a second random or pseudorandom frequency hopping procedure within the plurality of downlink carriers to select one of the plurality of downlink carriers as the uplink channel for a second time period. The UE may then transmit an uplink communication during the second time period on the selected uplink channel. In some examples, the uplink communication may be transmitted based at least in part on time division multiplexing (TDM) information.

公开(公告)号：US11012283B2

公开(公告)日：2021-05-18

申请号：US16801942

申请日：2020-02-26

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Tamer Kadous ,  Tao Luo ,  Xiao Feng Wang ,  Jing Lei

IPC: H04L27/34 ,  H04J1/00 ,  H04L27/26 ,  H04L5/00

Abstract: In order to maintain flexible system bandwidth and a flexible center frequency, without requiring a cyclic prefix or guard interval, a transmitter apparatus transmits a reference signal based on a single carrier waveform having a mixed symbol structure, in reference signal symbols using at least one of a cyclic prefix and a guard interval and transmits data based on the single carrier waveform without the cyclic prefix or the guard interval. The data may be based on input data processed using overlapping FFT windows, and an amount of overlap between the FFT windows may be configurable by the transmitter or the receiver. An apparatus receiving the downlink transmission comprising data based on a single carrier waveform may process the data based on overlapping FFT windows.

公开(公告)号：US10952142B2

公开(公告)日：2021-03-16

申请号：US15633376

申请日：2017-06-26

Applicant: QUALCOMM Incorporated

Inventor： Andrei Dragos Radulescu ,  Alexei Yurievitch Gorokhov ,  Chengjin Zhang ,  Chirag Sureshbhai Patel ,  Tamer Kadous

IPC: H04L12/00 ,  H04W52/02 ,  H04W76/28 ,  H04W68/02 ,  H04W24/02 ,  H04W72/12

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) and a base station operating in unlicensed spectrum may temporarily increase a paging opportunity window (POW) size, or reduce a time between POWs, in order to meet performance metrics or account for time periods when a base station is unable to win access to the wireless medium during a POW. In some cases, a UE may identify a failed listen-before-talk procedure and autonomously update the POW size. In other examples, a base station may initiate a change in POW size or increase a number of paging opportunities in order to meet achieve one or more key performance indicators (KPIs). After a predetermined period, or after a triggering condition is no longer present, the UE and the base station may reset the POW size or the number of paging opportunities to a nominal amount to conserve power.

公开(公告)号：US10939441B2

公开(公告)日：2021-03-02

申请号：US16258938

申请日：2019-01-28

Applicant: QUALCOMM Incorporated

Inventor： Kapil Bhattad ,  Jing Sun ,  Xiaoxia Zhang ,  Yongbin Wei ,  Tamer Kadous ,  Srinivas Yerramalli ,  Tao Luo

IPC: H04W36/30 ,  H04W72/04 ,  H04W76/11 ,  H04W24/08 ,  H04L1/00 ,  H04W76/27 ,  H04L5/00 ,  H04W74/08 ,  H04W74/00 ,  H04B7/08 ,  H04B7/06

Abstract: A base station may configure a set of autonomous uplink (AUL) resources for a specific base station receive beam, or the AUL resources may be configured for specific user equipment (UEs) or user groups. Additionally, the AUL resources may be configured to include a sensing portion, a data portion, or both. As an example, a UE may receive an AUL configuration that includes an indication of a set of AUL resources that are specific to a base station receive beam. The UE may then determine that the set of AUL resources is available and perform an AUL transmission of uplink data using the set of beam-specific AUL resources. Additionally or alternatively, the UE may perform the AUL transmission with respective portions that include a sensing signal and the uplink data. The base station may use the sensing signal to determine a receive beam on which to receive the uplink data.