公开(公告)号：US11924015B2

公开(公告)日：2024-03-05

申请号：US17062235

申请日：2020-10-02

Applicant: QUALCOMM Incorporated

Inventor： Mostafa Khoshnevisan ,  Xiaoxia Zhang ,  Peter Gaal ,  Tao Luo ,  Jing Sun ,  Tae Min Kim ,  Arumugam Chendamarai Kannan

IPC: H04L27/26 ,  H04L5/00 ,  H04L5/10 ,  H04W8/24 ,  H04W72/23 ,  H04W72/53

CPC classification number: H04L27/2675 ,  H04L5/0048 ,  H04L5/0051 ,  H04L5/10 ,  H04L27/2613 ,  H04W8/24 ,  H04W72/23 ,  H04W72/53

Abstract: A phase tracking reference signal (PT-RS) may be transmitted to enable a receiver to correct phase noise in wireless communication. A UE scheduled for one PDSCH with DMRS ports in two or more DMRS CDM groups that are associated with two TCI states may be configured for PT-RS using two PT-RS ports. Therefore, rather than limiting PT-RS to a single port, the PT-RS may be transmitted to the UE using two PT-RS ports. The apparatus transmits a capability indication for more than one PT-RS port for receiving a downlink shared channel based on a first TCI and a second TCI. The apparatus receives a configuration for a maximum number of downlink PT-RS ports from a base station.

公开(公告)号：US11909560B2

公开(公告)日：2024-02-20

申请号：US17302066

申请日：2021-04-22

Applicant: QUALCOMM Incorporated

Inventor： Abhinav Sridhar ,  Jae Won Yoo ,  Tae Min Kim ,  Paolo Minero ,  Ashok Mantravadi ,  Hari Sankar ,  Alexei Yurievitch Gorokhov

IPC: H04L25/02 ,  H04B17/318 ,  H04L5/00

CPC classification number: H04L25/0224 ,  H04B17/318 ,  H04L5/001 ,  H04L5/0048 ,  H04L25/0256 ,  H04W74/0825

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine an actual power delay profile (PDP) associated with a channel between the UE and a base station, wherein the actual PDP indicates an averaged power level of the channel over a period of time. The UE may determine whether a channel estimation mode switching event is satisfied. The UE may switch, based at least in part on the channel estimation mode switching event being satisfied, between a first channel estimation mode based at least in part on the actual PDP and a second channel estimation mode based at least in part on a template PDP. Numerous other aspects are described.

公开(公告)号：US11595236B2

公开(公告)日：2023-02-28

申请号：US16947683

申请日：2020-08-12

Applicant: QUALCOMM Incorporated

Inventor： Kapil Bhattad ,  Ananta Narayanan Thyagarajan ,  Jing Sun ,  Xiaoxia Zhang ,  Tae Min Kim

IPC: H04L27/26 ,  H04L5/00

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a base station and/or a user equipment may determine a time domain resource pattern for a set of demodulation reference signals (DMRSs), wherein the set of DMRSs is included in a Type-B physical downlink shared channel (PDSCH). A base station may transmit, and the user equipment may receive, the set of DMRSs using a set of resources determined based at least in part on the time domain resource pattern. Numerous other aspects are provided.

公开(公告)号：US11202264B2

公开(公告)日：2021-12-14

申请号：US16513356

申请日：2019-07-16

Applicant: QUALCOMM Incorporated

Inventor： Steven Charles Ciccarelli ,  Vikas Mahajan ,  Tae Min Kim ,  Supratik Bhattacharjee ,  Chitaranjan Pelur Sukumar ,  Ashok Mantravadi ,  Pooyan Amini ,  Alberto Rico Alvarino ,  Carl Hardin

IPC: H04W52/24 ,  H04L1/00 ,  H04L1/20 ,  H04L5/00 ,  H04W52/14 ,  H04W52/52 ,  H04W72/04

Abstract: Some techniques and apparatuses described herein protect components of a user equipment (UE), such as a low noise amplifier (LNA), from internal interference. For example, the LNA may be disconnected from a receive chain during periods of high internal interference, and may be reconnected to the receive chain during periods of low internal interference. Furthermore, some techniques and apparatuses described herein improve performance by adjusting operations of the UE to account for and/or offset increased internal interference due to a receive chain that does not include a surface acoustic wave (SAW) filter to remove unwanted radio frequency signals. For example, one or more operations of a baseband processor may be modified to account for the increased internal interference. Additionally, or alternatively, reporting of channel state information may be modified to account for increased internal interference of the UE. Additional details are described herein.

公开(公告)号：US11109295B2

公开(公告)日：2021-08-31

申请号：US16416246

申请日：2019-05-19

Applicant: QUALCOMM Incorporated

Inventor： Alberto Rico Alvarino ,  Mungal Singh Dhanda ,  Le Liu ,  Umesh Phuyal ,  Tae Min Kim

IPC: H04W36/30 ,  H04W36/08 ,  H04W36/00

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may measure a physical channel such as a narrowband physical broadcast channel (NPBCH) to supplement (e.g., or as an alternative to) reference signal measurements when determining a received signal measurement, such as a received signal strength or received signal quality of a cell. A base station may transmit an indication to a UE that identifies the frequency at which a portion of NPBCH transmissions (e.g., reserved fields of a master information block (MIB)) is expected to change from one NPBCH transmission to another. The UE may adjust its utilization of NPBCH for determining the received signal measurement based on the indication. Further, the UE may communicate with the cell based on the determination of the received signal measurement, which are based on the indication.

公开(公告)号：US11006347B2

公开(公告)日：2021-05-11

申请号：US16390420

申请日：2019-04-22

Applicant: QUALCOMM Incorporated

Inventor： Prasad Kadiri ,  Alberto Rico Alvarino ,  Umesh Phuyal ,  Tae Min Kim ,  Mungal Singh Dhanda

IPC: H04W48/02 ,  H04W48/16 ,  H04W84/04

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a first information element (IE) and a second IE, wherein the first IE indicates whether all UEs that do not support cell-specific reference signal (CRS) muting are barred from a carrier and the second IE indicates whether all UEs that support CRS muting are barred from the carrier; and selectively access the carrier based at least in part on at least one of the first IE or the second IE. In some aspects, a UE may determine whether the UE supports cell-specific reference signal (CRS) muting; and transmit, to a base station, a capability report that indicates whether the UE supports CRS muting. Numerous other aspects are provided.

公开(公告)号：US10932149B2

公开(公告)日：2021-02-23

申请号：US16371687

申请日：2019-04-01

Applicant: QUALCOMM Incorporated

Inventor： Raghavendra Shyam Ananda ,  Srikanth Menon ,  Alberto Rico Alvarino ,  Le Liu ,  Tae Min Kim

IPC: H04W24/08 ,  H04W72/12

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may receive a configuration for identifying narrowband reference signal (NRS) tones that are to be received in association with a scheduled paging occasion, wherein the NRS tones are configured to be received via a non-anchor carrier regardless of whether a page is to be received in connection with the scheduled paging occasion; and receive the NRS tones via the non-anchor carrier based at least in part on the configuration. Numerous other aspects are provided.

公开(公告)号：US20190246244A1

公开(公告)日：2019-08-08

申请号：US16262432

申请日：2019-01-30

Applicant: QUALCOMM Incorporated

Inventor： Alberto Rico Alvarino ,  Seyedkianoush Hosseini ,  Amir Farajidana ,  Amer Catovic ,  Wanshi Chen ,  Umesh Phuyal ,  Tae Min Kim ,  Supratik Bhattacharjee

IPC: H04W4/06 ,  H04L12/24 ,  H04W72/04

CPC classification number: H04W4/06 ,  H04L5/001 ,  H04L5/0044 ,  H04L5/0058 ,  H04L5/008 ,  H04L5/0092 ,  H04L27/2602 ,  H04L41/0896 ,  H04W8/24 ,  H04W60/04 ,  H04W72/005 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/048 ,  H04W88/02

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine a capability of the UE relating to a carrier configuration of the UE, wherein the carrier configuration relates to carriers of at least two different numerologies; and transmit information identifying the capability, wherein the information identifying the capability identifies a bandwidth or number of carriers that is supported for carriers of a first numerology and one or more scaling values associated with one or more numerologies other than the first numerology. A base station may receive information identifying a capability of a UE relating to a carrier configuration of the UE, wherein the carrier configuration relates to carriers of at least two different numerologies; and determine a configuration for communication with the UE based at least in part on the information identifying the capability. Numerous other aspects are provided.

公开(公告)号：US11362779B2

公开(公告)日：2022-06-14

申请号：US16515692

申请日：2019-07-18

Applicant: QUALCOMM Incorporated

Inventor： Alberto Rico Alvarino ,  Vinod Ramaswamy ,  Gowrisankar Somichetty ,  Wanshi Chen ,  Le Liu ,  Xiao Feng Wang ,  Ayan Sengupta ,  Tae Min Kim ,  Vijayvaradharaj Tirucherai Muralidharan ,  Murali Menon

IPC: H04L5/00 ,  H04W72/04 ,  H04L25/02 ,  H04J11/00 ,  H04W76/27

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may determine a relationship between a first set of antenna ports, used for demodulation reference signals (DMRS) associated with a machine-type communication physical downlink control channel (MPDCCH) and used for the MPDCCH, and a second set of antenna ports used for cell-specific reference signals (CRS); receive CRS on one or more antenna ports of the second set of antenna ports; and receive the MPDCCH using at least the CRS based at least in part on the relationship. Numerous other aspects are provided.

公开(公告)号：US11316633B2

公开(公告)日：2022-04-26

申请号：US16268244

申请日：2019-02-05

Applicant: QUALCOMM Incorporated

Inventor： Tae Min Kim ,  Jae Ho Ryu ,  Alberto Rico Alvarino ,  Le Liu ,  Sven Fischer ,  Supratik Bhattacharjee

IPC: H04L5/00 ,  H04W72/08 ,  H04L27/26 ,  H04W64/00 ,  G01S1/20 ,  H04W88/08 ,  H04W88/02 ,  G01S5/02

Abstract: Disclosed are techniques for transmitting and receiving an extended narrowband positioning reference signal (NPRS) sequence. In an aspect, a base station generates the extended NPRS sequence and transmits, to at least one user equipment (UE) over a wireless narrowband channel, the extended NPRS sequence. In an aspect, a UE receives, over the wireless narrowband channel, an NPRS of a first subset of the extended NPRS sequence and measures the NPRS of the first subset of the extended PRS sequence. In an aspect, the extended NPRS sequence may be a function of a plurality of slot numbers of a plurality of slots of a plurality of sequential radio frames and a plurality of symbol indexes of a plurality of symbols of a single physical resource block.