公开(公告)号：US20230283332A1

公开(公告)日：2023-09-07

申请号：US18173482

申请日：2023-02-23

Applicant: QUALCOMM Incorporated

Inventor： Saeid SAHRAEI ,  Gokul SRIDHARAN ,  Shimman Arvind PATEL ,  Krishna Kiran MUKKAVILLI ,  June NAMGOONG ,  Taesang YOO ,  Renqiu WANG

IPC: H04B7/0456 ,  H04B7/06 ,  H04W72/23

CPC classification number: H04B7/0465 ,  H04B7/0634 ,  H04W72/23

Abstract: Methods, systems, and devices for wireless communications are described in which a base station may identify a null space matrix that lies within a null space of an effective channel matrix for communications between the base station and a user equipment (UE). An indication of the null space matrix may be provided to the UE, and the null space matrix used to determine modifications to a precoding matrix. The base station and UE may determine a redistribution matrix that provides a reduced variance of transmission powers for a number of transmission channels, where a product of the null space matrix and the redistribution matrix may be computed and added to the precoding matrix to generate a modified precoding matrix. The modified precoding matrix may be used to generate the communications from the base station and UE with reduced power variance across channels.

公开(公告)号：US20210351868A1

公开(公告)日：2021-11-11

申请号：US17248846

申请日：2021-02-10

Applicant: QUALCOMM Incorporated

Inventor： Saeid SAHRAEI ,  Hung Dinh LY ,  Tingfang JI ,  Krishna Kiran MUKKAVILLI ,  Hwan Joon KWON ,  June NAMGOONG ,  Taesang YOO ,  Shimman Arvind PATEL ,  Gokul SRIDHARAN

IPC: H04L1/00 ,  H04L5/00 ,  H04L27/18 ,  H04L27/34 ,  H04L27/26

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may interleave a signal, that is to be transmitted using discrete Fourier transform (DFT) spread orthogonal frequency-division multiplexing (DFT-s-OFDM), and a negative of the signal to obtain an interleaved signal prior to performing a DFT on the interleaved signal. The UE may transmit a DFT-s-OFDM signal that is based at least in part on the interleaved signal. Numerous other aspects are provided.

公开(公告)号：US20210345375A1

公开(公告)日：2021-11-04

申请号：US17244780

申请日：2021-04-29

Applicant: QUALCOMM Incorporated

Inventor： Ahmed Attia ABOTABL ,  Muhammad Sayed Khairy ABDELGHAFFAR ,  Gabi SARKIS ,  Wanshi CHEN ,  Shimman Arvind PATEL ,  Krishna Kiran MUKKAVILLI

IPC: H04W72/12 ,  H04L1/00 ,  H04L5/14 ,  H04W72/04

Abstract: Aspects relate to time-interleaving of code block groups (CBGs) of a transport block. Some deployments can include configuring a downlink transmission to a scheduled entity that overlaps in time with an uplink transmission from the scheduled entity when the scheduled entity is operating in a full-duplex mode. CBGs may be time-interleaved to accommodate and/or mitigate interference between downlink and uplink transmissions. The modulation and coding scheme (MCS) of the transport block can further be adjusted to accommodate and/or mitigate interference between the downlink and uplink transmissions. Techniques discussed herein can be used at various nodes, components, and/or devices in a wireless network (e.g., UEs, BSs, CUs, RUs, DUs, etc.). Other aspects, features, and embodiments are also claimed and described.

公开(公告)号：US20210344544A1

公开(公告)日：2021-11-04

申请号：US17306755

申请日：2021-05-03

Applicant: QUALCOMM Incorporated

Inventor： Saeid SAHRAEI ,  Gokul SRIDHARAN ,  Hung Dinh LY ,  June NAMGOONG ,  Krishna Kiran MUKKAVILLI ,  Naga BHUSHAN ,  Tingfang JI ,  Peter GAAL ,  Taesang YOO ,  Shimman Arvind PATEL

IPC: H04L27/26 ,  H04W72/04

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may receive a resource allocation indicating a plurality of transmission tones comprising a subset of data tones of a plurality of data tones and a subset of peak reduction tones (PRTs) of a plurality of PRTs, wherein the resource allocation indicates a plurality of data tone locations and a plurality of PRT locations within a particular bandwidth, wherein a subset of PRT locations of the plurality of PRT locations are arranged relative to a subset of data tone locations of the plurality of data tone locations according to a PRT sequence corresponding to a set of allocated frequency resources; and transmit a data transmission using a waveform based at least in part on the resource allocation. Numerous other aspects are provided.

公开(公告)号：US20200059317A1

公开(公告)日：2020-02-20

申请号：US16664157

申请日：2019-10-25

Applicant: QUALCOMM Incorporated

Inventor： Shimman Arvind PATEL ,  Joseph Binamira SORIAGA ,  Gabi SARKIS ,  June NAMGOONG

IPC: H04L1/00 ,  H04L1/18

Abstract: Certain aspects of the present disclosure generally relate to techniques for selecting a base graph to be used for wireless communications. Selection can be based on a variety of factors. Abase graph can be used to derive a low-density parity-check (LDPC) code used for encoding a retransmission of an original transmission. An exemplary method generally includes selecting, based on a modulation and coding scheme (MCS) and a resource allocation (RA) for transmitting a codeword, a base graph (BG), from which to derive a low density parity check (LDPC) code for use in encoding data bits in the codeword (e.g., encoding data bits of a bitstream such that some redundant bits are included in the codeword), encoding the data bits to generate the codeword using the LDPC code derived from the selected BG, and transmitting the codeword using the MCS via resources of the

公开(公告)号：US20190268105A1

公开(公告)日：2019-08-29

申请号：US16409367

申请日：2019-05-10

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Peter GAAL ,  Shimman Arvind PATEL ,  Yongbin WEI ,  Aleksandar DAMNJANOVIC

IPC: H04L1/18 ,  H04W72/04 ,  H04W72/12 ,  H04W74/02

Abstract: Systems, methods, and apparatuses are described for wireless communication, including for hybrid automatic repeat request (HARQ) feedback in a system that supports communications using transmission time intervals (TTIs) of different durations. A base station may identify a user equipment's (UE) capability to provide HARQ feedback for transmissions that use TTIs of a shorter duration relative to other TTIs supported in the system. The base station may select a HARQ timing mode based on the capability of the UE and may indicate the selected HARQ timing mode to the UE. The base station may then transmit one or more data transmissions to the UE using the reduced TTIs. The UE may respond with HARQ feedback based on the HARQ timing mode. The HARQ timing mode may be based on different response times based on the location of the data transmission within a TTI or relative to data transmission in other TTIs.

公开(公告)号：US20180359742A1

公开(公告)日：2018-12-13

申请号：US16001739

申请日：2018-06-06

Applicant: QUALCOMM Incorporated

Inventor： Shimman Arvind PATEL ,  Wanshi CHEN ,  Seyedkianoush HOSSEINI

IPC: H04W72/04 ,  H04W72/14 ,  H04W72/08

CPC classification number: H04W72/0413 ,  H04W72/042 ,  H04W72/0446 ,  H04W72/085 ,  H04W72/1221 ,  H04W72/14

Abstract: Methods and apparatus are provided for shortened Transmission Time Interval (sTTI) configurations for low latency communications. A User Equipment (UE) receives at least one transmission in a first TTI of a first duration configured for the UE, the first TTI assigned within a second TTI of a second duration, wherein the first TTI is configured for Ultra-Reliable and Low-Latency Communications (URLLC) and uses, at least in part, a configuration for communicating using the second TTI.

公开(公告)号：US20170295552A1

公开(公告)日：2017-10-12

申请号：US15479210

申请日：2017-04-04

Applicant: QUALCOMM Incorporated

Inventor： Shimman Arvind PATEL ,  Yongbin WEI ,  Peter GAAL ,  Alberto RICO ALVARINO ,  Gordon WALKER ,  Wanshi CHEN ,  Aleksandar DAMNJANOVIC ,  Juan MONTOJO

IPC: H04W56/00 ,  H04W72/04

CPC classification number: H04W56/001 ,  H04L27/2602 ,  H04L27/2607 ,  H04L27/2611 ,  H04W72/005 ,  H04W72/042 ,  H04W72/0446

Abstract: Aspects of the present disclosure relate to wireless communications and, more particularly, to synchronization for standalone long term evolution (LTE) broadcast. In one aspect, a method is provided which may be performed by a wireless device such as a base station (BS). The method generally includes providing unicast coverage to one or more user equipments (UEs) in a unicast coverage area within a larger coverage area, transmitting unicast data in one or more subframes, and transmitting synchronization signals within one or more of the broadcast subframes, wherein the broadcast signals are transmitted as single frequency network (SFN) transmissions synchronized with transmissions from one or more other base stations providing unicast coverage within the larger coverage area.

公开(公告)号：US20170257838A1

公开(公告)日：2017-09-07

申请号：US15398515

申请日：2017-01-04

Applicant: QUALCOMM Incorporated

Inventor： Shimman Arvind PATEL ,  Peter GAAL ,  Wanshi CHEN ,  Juan MONTOJO ,  Aleksandar DAMNJANOVIC

IPC: H04W56/00 ,  H04W74/00 ,  H04H20/08

CPC classification number: B65D5/38 ,  B65D1/34 ,  B65D81/02 ,  B65D2571/00444 ,  H04H20/08 ,  H04J11/00 ,  H04W16/32 ,  H04W56/00 ,  H04W56/0025 ,  H04W74/006 ,  H04W88/02

Abstract: Aspects of the present disclosure relate to wireless communications and, more particularly, to synchronization for standalone long term evolution (LTE) broadcast. In one aspect, a method is provided which may be performed by a wireless device such as a user equipment (UE). The method generally monitoring, within anchor subframes occurring at a first periodicity, for synchronization signals of a first type, obtaining an indication of one or more unicast subframes scheduled to occur between anchor subframes, and obtaining an indication of one or more broadcast subframes scheduled to occur between anchor subframes.

公开(公告)号：US20170230992A1

公开(公告)日：2017-08-10

申请号：US15294453

申请日：2016-10-14

Applicant: QUALCOMM Incorporated

Inventor： Shimman Arvind PATEL ,  Wanshi CHEN

IPC: H04W72/12 ,  H04W72/04 ,  H04B7/06 ,  H04B7/04 ,  H04L5/00

CPC classification number: H04W72/1231 ,  H04B7/0413 ,  H04B7/0626 ,  H04L5/0007 ,  H04L5/0048 ,  H04L5/005 ,  H04L5/0062 ,  H04W72/042 ,  H04W72/0453 ,  H04W72/046 ,  H04W72/1257 ,  H04W72/1268 ,  H04W72/14

Abstract: Various aspects described herein relate to determining a configuration of reference signal (RS) resources in wireless communications. A scheduling grant of resources can be received from an access point, wherein the scheduling grant indicates one or more parameters related to transmission locations of one or more RSs. RS resource locations can be determined for the one or more RSs based at least in part on the one or more parameters. The one or more RSs can be received over the RS resource locations allowing for decimation of the RSs in time and/or frequency.