公开(公告)号：US20210144760A1

公开(公告)日：2021-05-13

申请号：US17090641

申请日：2020-11-05

Applicant: QUALCOMM Incorporated

Inventor： Ozcan Ozturk ,  Xiaoxia Zhang ,  Jing Sun ,  Andrei Dragos Radulescu

IPC: H04W74/08 ,  H04W74/00 ,  H04W72/04 ,  H04W80/02 ,  H04W76/19

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify a bandwidth part (BWP) to switch to after identifying consistent uplink listen-before-talk (LBT) failures on a first BWP based on parameters indicated by a base station. For example, the base station may transmit a switching parameter to the UE that the UE then uses to switch to a second BWP based on identifying the consistent uplink LBT failures on the first BWP. Subsequently, after selecting the second BWP, the UE may attempt to use the second BWP for uplink transmissions (e.g., after performing a random access procedure). Additionally, the UE may indicate the consistent uplink LBT failures to a base station associated with the failed BWP based on a type of cell that is using that failed BWP.

公开(公告)号：US10728913B2

公开(公告)日：2020-07-28

申请号：US16401979

申请日：2019-05-02

Applicant: Qualcomm Incorporated

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

IPC: H04W72/12 ,  H04W88/06 ,  H04B7/024 ,  H04B7/0413 ,  H04L27/26 ,  H04W16/14 ,  H04L1/00

Abstract: Wireless communications systems and methods related to serving user equipment devices (UEs) using multi-transmission/reception point (TRP) techniques with dynamic varying TRP clusters are provided. A wireless communication device receives, from a first group of one or more TRPs, a first signal during a first time period. The wireless communication device receives, from a second group of one or more TRPs, a second signal during a second time period, wherein at least one TRP in the second group is not in the first group. The first signal may include a first transport block (TB) and the second signal may include a second TB different from the first TB. Alternatively, the first signal may include a first portion of a TB and the second signal includes a second portion of the TB different from the first portion.

公开(公告)号：US10405262B2

公开(公告)日：2019-09-03

申请号：US15679034

申请日：2017-08-16

Applicant: QUALCOMM Incorporated

Inventor： Arumugam Chendamarai Kannan ,  Andrei Dragos Radulescu ,  Chirag Patel ,  Tamer Kadous

IPC: H04W48/08 ,  H04W16/14 ,  H04W48/12 ,  H04W48/16 ,  H04W48/18 ,  H04W74/08 ,  H04W88/02 ,  H04W84/04 ,  H04W16/28 ,  H04W56/00 ,  H04W74/00

Abstract: Techniques are described for wireless communication. A method for wireless communication at a user equipment (UE) includes receiving an instance of a discovery reference signal (DRS) on a beam over a shared radio frequency spectrum band; determining a public land mobile network identifier (PLMN ID) based at least in part on a time-frequency location of the instance of the DRS; and selectively performing a random access procedure based at least in part on the determined PLMN ID. A method for wireless communication at a base station includes transmitting an instance of a DRS on a beam over a shared radio frequency spectrum band; and transmitting a PLMN ID based at least in part on a time-frequency location of the DRS.

公开(公告)号：US10404434B2

公开(公告)日：2019-09-03

申请号：US15899060

申请日：2018-02-19

Applicant: QUALCOMM Incorporated

Inventor： Arumugam Chendamarai Kannan ,  Andrei Dragos Radulescu ,  Chirag Sureshbhai Patel ,  Tamer Kadous

IPC: H04W4/00 ,  H04L5/00 ,  H04W56/00 ,  H04W74/08 ,  H04W16/14 ,  H04B7/04 ,  H04L27/00 ,  H04B7/06

Abstract: Methods, systems, and devices for wireless communication are described that involve determining multiple beamformed transmission beams for transmission of an opportunistic or multi-beam discovery reference signal (DRS) over a shared radio frequency spectrum band. The base station may determine a contention exempt transmission (CET) period for the shared spectrum band and transmit the DRS using multiple transmission beams during CET period or the base station may perform a listen before talk (LBT) procedure, and transmit, based on the LBT procedure, the DRS over a shared radio frequency spectrum band. The base station may transmit an indication of the type of DRS transmission, a subframe offset, random access configurations, and/or error correcting codes to enable a user equipment to discover, connect to, and acquire timing information associated with the network.

公开(公告)号：US20190246391A1

公开(公告)日：2019-08-08

申请号：US16264382

申请日：2019-01-31

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Andrei Dragos Radulescu ,  Jing Sun

IPC: H04W72/04 ,  H04W76/27 ,  H04W76/28 ,  H04L1/18

CPC classification number: H04W72/0413 ,  H04L1/1812 ,  H04L5/0053 ,  H04L5/0055 ,  H04L27/0006 ,  H04W72/0406 ,  H04W74/0808 ,  H04W76/27 ,  H04W76/28

Abstract: Some communication systems enable a user equipment (UE) to have different timelines depending on a category of the UE. One goal of the present method and apparatus is to improve channel utilization by reducing uplink transmission delays (or latency) for a UE in the unlicensed spectrum by not having to rely on a base station to have access to the wireless medium in order to assign a grant to the UE. The UE can transmit on an autonomous uplink (AUL) without having received an uplink grant. When a UE sends AUL traffic during a UE indicated timeline, the base station can indicate a reduced uplink physical uplink shared channel (PUSCH) processing timeline to the UE. The base station may further configure downlink feedback information (DFI) or downlink control information (DCI) monitoring opportunities for the UE. The UE may indicate the preferred AUL processing timeline.

公开(公告)号：US10374679B2

公开(公告)日：2019-08-06

申请号：US15912144

申请日：2018-03-05

Applicant: QUALCOMM Incorporated

Inventor： Makesh Pravin John Wilson ,  Tao Luo ,  Jing Sun ,  Andrei Dragos Radulescu ,  Aleksandar Damnjanovic ,  Arumugam Chendamarai Kannan

IPC: H04B7/06

Abstract: Methods, systems, and devices for wireless communication are described that support overriding a beam monitoring pattern for control channel transmissions based on channel conditions between a user equipment and a base station. A base station may select a beam monitoring pattern for transmitting control channel transmissions, which may include a pattern in which two or more beams are used for control channel transmissions. In the event that a first beam of the beams used in the beam monitoring pattern meets certain metrics, the use of one or more additional beams according to the beam monitoring pattern may be overridden and transmissions continued using the first beam. The metrics for continuing use of the first beam may include channel quality metrics, a number of consecutive successful transmissions using the first beam, one or more other metrics, or any combination thereof.

公开(公告)号：US20180288738A1

公开(公告)日：2018-10-04

申请号：US16001918

申请日：2018-06-06

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Juan Montojo ,  Taesang Yoo ,  Siddhartha Mallik ,  Andrei Dragos Radulescu ,  Chirag Sureshbhai Patel ,  Chengjin Zhang

IPC: H04W68/02 ,  H04W72/04 ,  H04W16/14 ,  H04W68/00 ,  H04W76/28 ,  H04W72/00 ,  H04W74/08 ,  H04W88/02 ,  H04W88/08

CPC classification number: H04W68/02 ,  H04W16/14 ,  H04W68/005 ,  H04W72/005 ,  H04W72/0453 ,  H04W74/0808 ,  H04W76/28 ,  H04W88/02 ,  H04W88/08

Abstract: Methods, systems, and devices for wireless communication are described. A base station may transmit a configuration for enhanced paging to a UE being served by a cell over a shared frequency band. The enhanced paging may include multiple paging intervals for each paging cycle. The UE may enable reception for a paging interval and determine whether the UE receives a downlink transmission. The UE may lengthen a paging interval or enable reception during a second paging interval based in part on determining whether the UE receives a downlink transmission. In some examples, the UE may receive a paging queue status indication indicating that paging information will be transmitted during a paging interval or a later interval, or indicating that no paging information is present at a serving cell.

公开(公告)号：US20180287686A1

公开(公告)日：2018-10-04

申请号：US15912144

申请日：2018-03-05

Applicant: QUALCOMM Incorporated

Inventor： Makesh Pravin John Wilson ,  Tao Luo ,  Jing Sun ,  Andrei Dragos Radulescu ,  Aleksandar Damnjanovic ,  Arumugam Chendamarai Kannan

IPC: H04B7/06

CPC classification number: H04B7/0632 ,  H04B7/0617 ,  H04B7/0626 ,  H04B7/063 ,  H04B7/0695

Abstract: Methods, systems, and devices for wireless communication are described that support overriding a beam monitoring pattern for control channel transmissions based on channel conditions between a user equipment and a base station. A base station may select a beam monitoring pattern for transmitting control channel transmissions, which may include a pattern in which two or more beams are used for control channel transmissions. In the event that a first beam of the beams used in the beam monitoring pattern meets certain metrics, the use of one or more additional beams according to the beam monitoring pattern may be overridden and transmissions continued using the first beam. The metrics for continuing use of the first beam may include channel quality metrics, a number of consecutive successful transmissions using the first beam, one or more other metrics, or any combination thereof.

公开(公告)号：US20180242348A1

公开(公告)日：2018-08-23

申请号：US15899257

申请日：2018-02-19

Applicant: QUALCOMM Incorporated

Inventor： Arumugam Chendamarai Kannan ,  Andrei Dragos Radulescu ,  Chirag Sureshbhai Patel ,  Tamer Kadous

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

Abstract: A method for wireless communication at a user equipment (UE) includes receiving timing information and a time-frequency resource configuration for an uplink subframe; selecting at least a first set of time-frequency resources of the uplink subframe on which to transmit; and transmitting a grantless transmission on at least the first set of time-frequency resources. The time-frequency resource configuration identifies a correspondence between at least one receive beam in a set of one or more receive beams and at least one set of time-frequency resources in one or more sets of time-frequency resources of the uplink subframe. The first set of time-frequency resources is selected based at least in part on a transmit beam of the UE, a correspondence of the transmit beam to a receive beam in the set of one or more receive beams, and a correspondence of the receive beam to the selected first set of time-frequency resources.

公开(公告)号：US20170280382A1

公开(公告)日：2017-09-28

申请号：US15465383

申请日：2017-03-21

Applicant: QUALCOMM Incorporated

Inventor： Andrei Dragos Radulescu ,  Tao Luo ,  Chirag Patel ,  Miguel Griot ,  Manu Sharma ,  Tamer Kadous ,  Rajat Prakash

IPC: H04W48/18 ,  H04W48/16 ,  H04W74/08 ,  H04W48/10

CPC classification number: H04W48/18 ,  H04W48/10 ,  H04W48/16 ,  H04W74/0833

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may attempt to access a network at a local area network access point without prior context information. The access point may be a hotspot operating in unlicensed spectrum according to a Long Term Evolution (LTE)-based standard. The UE may be unable to determine if it is authorized to access the network, so the UE may attempt to obtain system information that provides a list of service providers supported by the network. The UE may then determine whether it has credentials for a supported service provider, and the UE may access the network using those credentials when a supported service provider is recognized. Other broadcast messages may provide information about system information for supported service providers. A UE that is unable to access the network using stored credentials may attempt access using a random access channel procedure.