公开(公告)号：US20220345334A1

公开(公告)日：2022-10-27

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 ,  H04W74/08

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：US20210105120A1

公开(公告)日：2021-04-08

申请号：US17062265

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: H04L5/00 ,  H04W72/04

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：US20210051052A1

公开(公告)日：2021-02-18

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：US20200037264A1

公开(公告)日：2020-01-30

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 ,  H04W52/14 ,  H04W52/52 ,  H04W72/04 ,  H04L5/00 ,  H04L1/20 ,  H04L1/00

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：US20190053267A1

公开(公告)日：2019-02-14

申请号：US16059670

申请日：2018-08-09

Applicant: QUALCOMM Incorporated

Inventor： Tae Min KIM ,  Jing LIN ,  Arvind SANTHANAM ,  Timothy PALS ,  Subramanya RAO

IPC: H04W72/12 ,  H04L5/00 ,  H04W72/04 ,  H04W76/14

Abstract: Various aspects related to control channel (e.g., PSCCH) scheduling/prioritizing techniques in wireless communications are described. When a UE may not be able to decode various PSCCH transmissions detected in a subframe, a subset of the PSCCHs may be selected for decoding based on the described methods. In accordance with one aspect, a UE may determine that a total number of PSCCH transmissions in a subframe is greater than a number of PSCCH transmissions that can be decoded within the subframe. Upon such a determination, the UE may select at least one PSCCH transmission in the subframe for decoding based on at least one of: retransmission information, information regarding a transmitting UE associated with the at least one PSCCH transmission, or scheduling priority history associated with a sub-channel carrying the at least one PSCCH transmission. The UE may then decode the at least one PSCCH transmission selected for decoding.