公开(公告)号：US20240129087A1

公开(公告)日：2024-04-18

申请号：US18046851

申请日：2022-10-14

Applicant: QUALCOMM Incorporated

Inventor： Jae Ho Ryu ,  Hari Sankar ,  Alexei Yurievitch Gorokhov ,  Jae Won Yoo ,  Hobin Kim

IPC: H04L5/00 ,  H04W72/12

CPC classification number: H04L5/0051 ,  H04W72/1289

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment may receive signaling that indicates one of a plurality of demodulation reference signal (DMRS) configurations for demodulating a downlink data channel in a slot or subslot. The UE may receive the signaling from a network entity, such as a base station, and the network entity may select the indicated DMRS configuration. The plurality of DMRS configurations may indicate whether DMRS combining is supported across the slot or subslot and a subsequent adjacent slot or subslot, and the plurality of DMRS configurations may include a configuration that is capable of indicating to the UE that a single DMRS is configured in the slot or subslot and is to be combined with a DMRS in a subsequent adjacent slot or subslot to demodulate the downlink data channel.

公开(公告)号：US20240089047A1

公开(公告)日：2024-03-14

申请号：US17942090

申请日：2022-09-09

Applicant: Qualcomm Incorporated

Inventor： Jae Won Yoo ,  Jing Jiang ,  Wei Yang ,  Yongle Wu ,  Vamsi Krishna Amalladinne ,  Hari Sankar ,  Alexei Yurievitch Gorokhov

IPC: H04L5/00 ,  H04B7/0456 ,  H04W72/04

CPC classification number: H04L5/0048 ,  H04B7/0456 ,  H04W72/042 ,  H04W72/046 ,  H04W72/0473

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive an indication of an antenna port mapping from a network entity. The antenna port mapping may be between a tracking reference signal and a corresponding reference signal, the antenna port mapping indicating a mapping of a tracking reference signal port to a plurality of reference signal antenna ports associated with the corresponding reference signal. The UE may receive a tracking reference signal via the tracking reference signal port based on the antenna port mapping. The UE may perform a channel measurement procedure using the tracking reference signal based on the mapping.

公开(公告)号：US20190261325A1

公开(公告)日：2019-08-22

申请号：US16274932

申请日：2019-02-13

Applicant: QUALCOMM Incorporated

Inventor： Alexandros MANOLAKOS ,  Jae Won Yoo ,  June Namgoong ,  Peter Pui Lok Ang

IPC: H04W72/04

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive an indication of a plurality of selectable physical resource block (PRB) bundle sizes. The UE may receive downlink control information (DCI) that does not include a PRB bundling size indicator that indicates a PRB bundle size to be selected from the plurality of selectable PRB bundle sizes. The UE may select a PRB bundle size, from the plurality of selectable PRB bundle sizes, despite the DCI not including the PRB bundling size indicator. Numerous other aspects are provided.

公开(公告)号：US20240333561A1

公开(公告)日：2024-10-03

申请号：US18193564

申请日：2023-03-30

Applicant: QUALCOMM Incorporated

Inventor： Jing Jiang ,  Seyedkianoush Hosseini ,  Lei Xiao ,  Vinayak Suresh ,  Jae Won Yoo

IPC: H04L25/03 ,  H04W72/0453 ,  H04W72/20

CPC classification number: H04L25/03828 ,  H04W72/0453 ,  H04W72/20

Abstract: Methods, systems, and devices for wireless communications are described. A transmitting device may filter data tones (e.g., in edge subbands of an allocated frequency band) to achieve time domain windowing or shaping. Data tones of edge subbands of a configured frequency band may be filtered to shape a waveform such that it does not extend beyond symbol boundaries (e.g., does not result in emission leakage). In some examples, the transmitter may provide an indication of subband frequency domain shaping filters used to the receiver, to support demodulation on the receiver side. In some examples, the transmitter may indicate a demodulation reference signal (DMRS) comb structure (e.g., of the edge subbands) to the receiver, and the receiver may determine or estimate the filters of the subband frequency domain shaping based on the comb structure or the indication of the filters.

公开(公告)号：US20240080692A1

公开(公告)日：2024-03-07

申请号：US17903834

申请日：2022-09-06

Applicant: QUALCOMM Incorporated

Inventor： Jing Jiang ,  Jae Won Yoo ,  Yongle Wu ,  Lei Xiao ,  Hari Sankar ,  Alexei Yurievitch Gorokhov ,  Yu Zhang ,  Wei Yang ,  Jing Lei

IPC: H04W24/10 ,  H04L5/00

CPC classification number: H04W24/10 ,  H04L5/0051

Abstract: Methods, systems, and devices for wireless communications are described. In some wireless communications systems, a user equipment (UE) and a network entity may utilize multi-port mobility reference signals to assist with spatial based mobility procedures. The UE may receive a reference signal that is associated with multiple antenna ports. The UE may measure a multi-dimensional channel response based on the reference signal. The multi-dimensional channel response may be associated with measured channel metrics corresponding to the multiple antenna ports. The UE may transmit a report that includes a channel measurement vector based on the multi-dimensional channel response. The channel measurement vector may indicate multiple measured channel metrics for one or more dimensions of the multi-dimensional channel response. The network entity may transmit a message that indicates one or more metrics associated with mobility management for the UE based on the report that indicates the channel measurement vector.

公开(公告)号：US11924666B2

公开(公告)日：2024-03-05

申请号：US17647805

申请日：2022-01-12

Applicant: QUALCOMM Incorporated

Inventor： Jae Won Yoo ,  Hari Sankar ,  Alexei Yurievitch Gorokhov ,  Ashok Mantravadi ,  Weng Chon Ao ,  Paolo Minero ,  Abhinav Sridhar ,  Shriram Swaminathan ,  Gi Hong Song

IPC: H04W24/10 ,  H04B17/318 ,  H04B17/336 ,  H04L5/00 ,  H04W56/00

CPC classification number: H04W24/10 ,  H04B17/318 ,  H04B17/336 ,  H04L5/0051 ,  H04W56/001

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may measure a first energy level of a demodulation reference signal (DMRS). The UE may measure a second energy level of at least one of a tracking reference signal (TRS) or a synchronization signal block (SSB). The UE may determine, based at least in part on the first energy level and the second energy level, a DMRS signal-to-noise ratio (SNR). The UE may perform, based at least in part on the DMRS SNR, channel estimation for a physical channel associated with a communication to determine an estimated channel. The UE may perform, based at least in part on the estimated channel, demodulation processing for the communication. Numerous other aspects are described.

公开(公告)号：US11799700B1

公开(公告)日：2023-10-24

申请号：US17823935

申请日：2022-08-31

Applicant: QUALCOMM Incorporated

Inventor： Wei Yang ,  Jing Jiang ,  Jae Won Yoo

IPC: H04L25/49 ,  H04L1/00 ,  H03M5/20

CPC classification number: H04L25/4917 ,  H03M5/20 ,  H04L1/0058

Abstract: Apparatus, methods, and computer program products for decoding are provided. An example method may include receiving a communication from a second network entity via a channel, where the communication is encoded based on multi-level coding associated with at least a first coding level and a second coding level, and where the first coding level is associated with a first set of bits and the second coding level is associated with a second set of bits. The example method may further include means for generating a first estimate of a first LLR associated with the first coding level, a second estimate of a second LLR associated with the second coding level, and auxiliary information including a third estimate of a third LLR based on the first set of bits and the second set of bits.

公开(公告)号：US11528110B2

公开(公告)日：2022-12-13

申请号：US16799713

申请日：2020-02-24

Applicant: QUALCOMM Incorporated

Inventor： Alexandros Manolakos ,  Jae Won Yoo ,  Hari Sankar ,  Yi Huang ,  Wanshi Chen ,  Juan Montojo ,  Peter Gaal

IPC: H04L5/00 ,  H04L5/14

Abstract: In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus maybe a base station or a user equipment (UE). In an aspect, the apparatus may determine locations for a number of Demodulation Reference Signal (DM-RS) symbols to be transmitted within a scheduling unit of a channel included in a slot or mini-slot based on a selection between a first set of predetermined DM-RS positions and a second set of predetermined DM-RS positions. The apparatus may transmit the number of DM-RS symbols in the scheduling unit based on the determined locations.

公开(公告)号：US11212053B2

公开(公告)日：2021-12-28

申请号：US16044385

申请日：2018-07-24

Applicant: QUALCOMM Incorporated

Inventor： Alexandros Manolakos ,  Jae Won Yoo ,  Hari Sankar ,  Yi Huang ,  Wanshi Chen ,  Juan Montojo ,  Peter Gaal

IPC: H04L5/00 ,  H04L5/14

Abstract: In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus maybe a base station or a UE. In an aspect, the apparatus may determine locations for a number of DM-RS symbols to be transmitted in a scheduling unit of a channel configured in a slot/mini-slot, where a last DM-RS symbol maybe positioned one symbol prior to a last symbol carrying scheduled data. In another aspect, the apparatus may determine the locations for the DM-RS symbols based on a selection between a first set of predetermined DM-RS positions and a second set of predetermined DM-RS positions. In another aspect, the apparatus may determine the locations for the DM-RS symbols based on a set number of symbols, wherein the determined locations are spaced apart according to the set number of symbols. The apparatus may transmit the DM-RS symbols based on the determined locations.