公开(公告)号：US10469203B2

公开(公告)日：2019-11-05

申请号：US15672618

申请日：2017-08-09

Applicant: QUALCOMM Incorporated

Inventor： Hari Sankar ,  Jae Won Yoo ,  June Namgoong ,  Alexei Yurievitch Gorokhov ,  Jing Jiang ,  Joseph Binamira Soriaga ,  Brian Banister ,  Thomas Wilborn

IPC: H04L1/00 ,  H03M13/00 ,  H03M13/27

Abstract: Methods, systems, and devices for wireless communication between a first wireless device and a second wireless device are described. A second wireless device may determine that a channel condition satisfies at least one channel condition threshold. The second wireless device may identify, based on the determination, a time-interleaved transmission scheme for block(s) of encoded information. The second wireless device may transmit the block(s) of encoded information to a first wireless device in accordance with at least the time-interleaved transmission scheme. In some instances, the first wireless device may determine that the channel condition satisfies the at least one channel condition threshold and send a message to the second wireless device in order to trigger the use of the time-interleaved transmission scheme.

公开(公告)号：US10411833B2

公开(公告)日：2019-09-10

申请号：US15662012

申请日：2017-07-27

Applicant: QUALCOMM Incorporated

Inventor： Thomas Sun ,  Alexei Yurievitch Gorokhov ,  Hari Sankar

IPC: H03M13/13 ,  H04L1/00 ,  H03M13/09 ,  H03M13/29 ,  H03M13/37 ,  H03M13/00

Abstract: Methods, systems, and devices for wireless communication are described. A wireless device may initiate a successive decoding process for an encoded code block received at the wireless device, and generate, using a successive decoder, one or more candidate paths for a first portion of the code block, where the first portion of the code block includes a first data portion and a first data check portion. The wireless device may then perform a checking function on respective first data portions for the one or more candidate paths using respective first data check portions, and determine whether to terminate the successive decoding process prior to completing decoding of the encoded code block based at least in part on determining whether the checking function for each of the one or more candidate paths for the first data portion has failed the checking function.

公开(公告)号：US20180139758A1

公开(公告)日：2018-05-17

申请号：US15808637

申请日：2017-11-09

Applicant: QUALCOMM Incorporated

Inventor： Hari Sankar ,  Alexei Yurievitch Gorokhov ,  Paolo Minero ,  Hobin Kim ,  Raghu Challa ,  Jing Jiang ,  Joseph Binamira Soriaga

IPC: H04W72/04 ,  H04W72/08 ,  H04W24/08 ,  H04W24/02

CPC classification number: H04W72/0466 ,  H04L1/0023 ,  H04L1/005 ,  H04L1/0075 ,  H04W24/02 ,  H04W24/08 ,  H04W72/085

Abstract: Systems, methods and apparatus select a code book based on channel conditions and performance of a demodulator or demapper in a wireless receiver. The method may include determining that the receiver in a first wireless communication apparatus is configured for iteratively processing signals received from a channel, selecting a code book for use in communicating over the channel based on conditions affecting transmission of the signals through the channel and performance information associated with a demapper in the receiver, and identifying the selected code book in one or more control channels transmitted to a second wireless communication apparatus.

公开(公告)号：US20150139367A1

公开(公告)日：2015-05-21

申请号：US14082877

申请日：2013-11-18

Applicant: QUALCOMM Incorporated

Inventor： Farrokh ABRISHAMKAR ,  Venkata Gautham Chavali ,  Insung Kang ,  Carlos Ruben Cabrera-Mercader ,  Hari Sankar ,  Aamod Dinkar Khandekar

IPC: H04L25/02

CPC classification number: H04L25/0256 ,  H04B1/71072 ,  H04L25/0204 ,  H04L25/025

Abstract: Apparatus and methods for channel estimation include determining two streams corresponding to odd and even samples of a received signal that is sampled at a first chip rate, performing least squares successive interference cancellation on each of the two streams to obtain odd and even raw channel estimates, interlacing the odd and even raw channel estimates to obtain interlaced channel estimates, interpolating additional samples in the interlaced channel estimates to create higher chip rate channel estimates, identifying a first set of tap positions based on the higher chip rate channel estimates, applying matching pursuit to the first set of tap positions to identify a second set of tap positions, wherein the second set of tap positions includes fewer tap positions than the first set of tap positions, and determining a third set of tap positions by clustering each tap position included in the second set of tap positions.

Abstract translation: 用于信道估计的装置和方法包括确定对应于以第一码片速率采样的接收信号的奇数和偶数采样的两个流，对两个流中的每个流执行最小二乘法连续干扰消除以获得奇数和偶数原始信道估计， 将奇数和偶数原始信道估计交错以获得隔行信道估计，在隔行信道估计中内插附加采样以产生更高的码片速率信道估计，基于较高码片速率信道估计来识别第一组抽头位置，将匹配追踪应用于 所述第一抽头位置集合以识别第二组抽头位置，其中所述第二抽头位置集合包括比所述第一抽头位置集合更少的抽头位置，以及通过将包括在所述抽头位置中的每个抽头位置聚类来确定第三抽头位置集合 第二组抽头位置。

公开(公告)号：US12302303B2

公开(公告)日：2025-05-13

申请号：US18161468

申请日：2023-01-30

Applicant: QUALCOMM Incorporated

Inventor： Alexandros Manolakos ,  Gabi Sarkis ,  Navaneet Reddy Danda ,  Hobin Kim ,  Hari Sankar ,  Peter Pui Lok Ang ,  Joseph Binamira Soriaga

IPC: H04L12/28 ,  H04W72/0453 ,  H04W72/0457 ,  H04J1/16

Abstract: Methods, systems, and devices for wireless communications are described Techniques described may be utilized to avoid errors caused by resource allocation calculations, which may be indicated via higher layer signaling and/or determined within DCI. A base station may transmit downlink control information indicating resource allocation types to avoid errors. In other cases, the UE and/or base station may designate a particular resource block group size to avoid the potential errors. The UE and/or base station may calculate a number of resource blocks groups for a bandwidth part and allocate the size of the resource block group based on the calculation. The UE and/or base station may conduct a comparison between a bandwidth part size and a resource block group size to determine whether to designate a different resource block group size to avoid the errors. Similar techniques may be utilized in allocating resources for precoding resource block groups.

公开(公告)号：US12255717B2

公开(公告)日：2025-03-18

申请号：US18471279

申请日：2023-09-20

Applicant: QUALCOMM Incorporated

Inventor： Juan Montojo ,  Alexei Yurievitch Gorokhov ,  Peter Gaal ,  Yu Zhang ,  Joseph Binamira Soriaga ,  Tingfang Ji ,  Hari Sankar ,  Alexandros Manolakos

IPC: H04B7/06 ,  H04B7/0413

Abstract: Techniques are discussed herein identify transmission strategies and to communicate those identified transmission strategies in a transparent communication environment. In some examples, a user equipment (UE) may identify a new transmission strategy for a downlink channel different from a current transmission strategy for the down link channel. The UE may transmit a channel state information (CSI) message that includes an indication of the new transmission strategy identified by the UE. In some examples, a base station may identify the new transmission strategy for the downlink channel. The base station may transmit a codebook subset restriction (CSR) indicator that includes an indication of the new transmission strategy identified by the base station. In some examples, the UE may modify its feedback strategy based on the new transmission strategy.

公开(公告)号：US12177794B2

公开(公告)日：2024-12-24

申请号：US17654184

申请日：2022-03-09

Applicant: QUALCOMM Incorporated

Inventor： Sanghoon Kim ,  Brian Clarke Banister ,  Hari Sankar ,  Tom Chin ,  Wei-Jei Song ,  Alexei Yurievitch Gorokhov

IPC: H04W52/14 ,  H04L1/00 ,  H04W52/24 ,  H04W52/36 ,  H04W74/0833

Abstract: This disclosure provides systems, methods, and apparatuses for sharing a maximum transmit power limit between a first radio access technology (RAT) and a second RAT. In one aspect, a wireless communication apparatus may reduce the maximum transmit power limit of a first uplink signal associated with the first RAT to obtain a first transmit power. The wireless communication apparatus may allocate a second transmit power remaining from the maximum transmit power limit to a second uplink signal associated with the second RAT. The wireless communication apparatus may reduce the maximum transmit power limit when the wireless communication apparatus is located at a cell edge, and a higher priority of the first RAT in relation to the second RAT may otherwise result in the second transmit power of the second uplink signal not satisfying a threshold.

公开(公告)号：US12082133B2

公开(公告)日：2024-09-03

申请号：US17447328

申请日：2021-09-10

Applicant: QUALCOMM Incorporated

Inventor： Peter Pui Lok Ang ,  Alexei Yurievitch Gorokhov ,  Hari Sankar ,  Jafar Mohseni ,  Huilin Xu ,  Linhai He ,  Miguel Griot ,  Peter Gaal ,  Carsten Aagaard Pedersen

IPC: H04W56/00 ,  H04W8/02 ,  H04W76/28

CPC classification number: H04W56/001 ,  H04W8/02 ,  H04W76/28

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, an AMF may receive, from a user equipment (UE), a communication associated with a request for an identifier. The AMF may transmit, to the UE, the identifier, wherein the identifier is based at least in part on a synchronization signal block (SSB) periodicity and a number of paging frames per discontinuous reception (DRX) cycle. Numerous other aspects are described.

公开(公告)号：US12068901B2

公开(公告)日：2024-08-20

申请号：US17514996

申请日：2021-10-29

Applicant: QUALCOMM Incorporated

Inventor： Jing Jiang ,  Peter Gaal ,  John Edward Smee ,  Pushkar Bajirao Kulkarni ,  Hari Sankar ,  Sanghoon Kim ,  Seyong Park

IPC: H04L27/26 ,  H04W72/04 ,  H04W72/044

CPC classification number: H04L27/2614 ,  H04W72/044

Abstract: Methods, systems, and devices for wireless communications are described. In some systems, a transmitting device may perform a pre-distortion of a signal on a resource allocation for the signal and using discrete Fourier transform (DFT)-domain processing. For example, the transmitting device may perform a first frequency-domain (FD) to time-domain (TD) transform, which may be an example of an inverse DFT (IDFT), on a first set of FD symbols to obtain a first set of TD samples. A size of the first FD to TD transform may be based on the resource allocation for the signal. The transmitting device may perform a crest factor reduction (CFR) function on the first set of TD samples to pre-distort the signal in the TD (e.g., in the IDFT domain), which may enable the transmitting device to avoid out-of-band (OOB) emission or otherwise have greater control over where the pre-distortion contributes energy.

公开(公告)号：US11765673B2

公开(公告)日：2023-09-19

申请号：US17405824

申请日：2021-08-18

Applicant: QUALCOMM Incorporated

Inventor： Chinmay Shankar Vaze ,  Alexei Yurievitch Gorokhov ,  Yongle Wu ,  Paolo Minero ,  Hari Sankar ,  Ashok Mantravadi ,  Raghu Narayan Challa ,  Arvind Vardarajan Santhanam

IPC: H04W56/00 ,  H04W76/28 ,  H04L5/00

CPC classification number: H04W56/0035 ,  H04L5/0048 ,  H04W56/001 ,  H04W76/28

Abstract: A device may selectively listen for a tracking reference signal (TRS) during connected mode discontinuous reception (CDRx) based on whether the device is to switch between repeaters of a base station (such as during travel). A device may determine whether the device is in a high speed train (HST) scenario (such as based on a difference in frequency errors generated using a synchronization signal block (SSB) and generated using a TRS, based on a trajectory of a frequency error or a frequency error difference over time, based on instantaneous frequency errors, etc.). When the device is in a HST scenario, the device listens for a TRS during CDRx, and the device generates a frequency error using the TRS. When the device is not in a HST scenario, the device prevents listening for a TRS during CDRx (with a SSB received during CDRx to be used to generate a frequency error).