公开(公告)号：US10595328B2

公开(公告)日：2020-03-17

申请号：US16030592

申请日：2018-07-09

Applicant: QUALCOMM Incorporated

Inventor： Wei Zeng ,  Joseph Binamira Soriaga ,  Seyong Park ,  Tingfang Ji

IPC: H04W72/12 ,  H04W72/08 ,  H04L1/00 ,  H04W72/04 ,  H04W74/00

Abstract: Aspects of the present disclosure provide for a network assisted grantless data transmission method operable in a wireless communication network. A wireless device may transmit grantless data without requesting a scheduling entity to grant and schedule network resources prior to the grantless data transmission. A scheduling entity determines interference tolerance information of a plurality of uplink channels, wherein the interference tolerance information is configured to individually indicate an availability of each of the plurality of uplink channels for grantless uplink data transmission. The scheduling entity broadcasts the interference tolerance information to one or more subordinate entities or wireless devices.

公开(公告)号：US10567205B2

公开(公告)日：2020-02-18

申请号：US15674428

申请日：2017-08-10

Applicant: QUALCOMM Incorporated

Inventor： Seyong Park ,  Sony Akkarakaran ,  Wei Zeng ,  Peter Gaal ,  Yi Huang ,  Renqiu Wang ,  Hao Xu ,  Tao Luo ,  Tingfang Ji

IPC: H04L27/26 ,  H04L5/00 ,  H04J11/00

Abstract: Methods, systems, and devices for wireless communications are described that support frequency and time domain multiplexing for low peak-to-average waveforms with multiple streams. A user equipment (UE) may identify sets of symbols associated with different streams (e.g., multiple single-carrier discrete Fourier transform (DFT)-spread waveforms), where each stream may be associated with a low peak-to-average power ratio (PAPR). In some cases, different waveforms may be mapped to subsets of frequency resources through frequency division multiplexing (FDM). The UE may further reduce the PAPR of the multiplexed waveforms by performing time division multiplexing (TDM) across the single-carrier streams, and sets of symbols that are not used by one waveform may be used by another waveform. Frequency domain phase ramps may be applied to align the multiplexed waveforms. Signals included in an uplink transmission according to these techniques may maintain properties similar to single-carrier waveforms, including a low PAPR.

公开(公告)号：US20200052825A1

公开(公告)日：2020-02-13

申请号：US16534301

申请日：2019-08-07

Applicant: QUALCOMM Incorporated

Inventor： Gabi Sarkis ,  Jing Lei ,  Seyong Park ,  Ying Wang ,  Naga Bhushan ,  Chih-Ping Li ,  Joseph Binamira Soriaga ,  Wanshi Chen

IPC: H04L1/16 ,  H04W72/04 ,  H04L5/00 ,  H04W72/12

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) or multiple UEs may transmit a grant-free uplink transmission to a base station. The base station may monitor resources for the grant-free uplink transmission (e.g., from one or more UEs) and the base station may generate a group feedback message corresponding to whether the base station successfully received the uplink transmission(s). The group feedback message may contain feedback for multiple uplink transmissions from one or multiple UEs. The group feedback message may be transmitted to a UE over a downlink shared channel or a downlink control channel and the UE may receive the group feedback message and may determine whether to retransmit the uplink transmission based on the group feedback message.

公开(公告)号：US10530625B2

公开(公告)日：2020-01-07

申请号：US15873668

申请日：2018-01-17

Applicant: QUALCOMM Incorporated

Inventor： Seyong Park ,  Wei Zeng ,  Peter Gaal ,  Hao Xu ,  Yi Huang ,  Renqiu Wang ,  Sony Akkarakaran ,  Tao Luo ,  Tingfang Ji

IPC: H04K1/10 ,  H04L27/26

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may be configured with a transmission stream processor used to maintain a lower peak-to-average power ratio (PAPR) for uplink transmissions. In some cases, a UE may map modulated symbols of different signals (or waveforms) to interleaved subsets of frequency resources, and this form of frequency division multiplexing (FDM) may increase the PAPR of an uplink transmission. To reduce the PAPR of uplink transmissions, a transmission stream processor at the UE may support techniques for phase ramping modulated symbols in the time domain prior to mapping the symbols to the frequency resources. These techniques may help to ensure that the signals to be included in an uplink transmission are aligned in such a way that the PAPR of the uplink transmission is reduced.

公开(公告)号：US20190238196A1

公开(公告)日：2019-08-01

申请号：US16261166

申请日：2019-01-29

Applicant: QUALCOMM Incorporated

Inventor： Jing Lei ,  Renqiu Wang ,  Seyong Park ,  Naga Bhushan ,  Jay Kumar Sundararajan ,  Jing Jiang ,  Yi Huang ,  Joseph Binamira Soriaga ,  Tingfang Ji

IPC: H04B7/0456 ,  H04J13/00 ,  H04L27/26 ,  H04B1/69 ,  H04W72/10

CPC classification number: H04B7/0456 ,  H04B1/69 ,  H04B2001/6912 ,  H04J13/0062 ,  H04L27/2607 ,  H04W72/10

Abstract: Methods, systems, and devices for wireless communications are described. A wireless device such as a user equipment (UE) may identify a codebook matrix having a number of rows equal to a first number and a number of columns equal to a second number, the first number equal to a number of UEs supported for communication with a base station, and the second number equal to a sequence length of a set of UE specific signature sequences, where the rows of the codebook matrix comprise a Welch bound equality (WBE) achieving vector set. The UE may identify a UE specific signature sequence based at least in part on a mapping between an identifier associated with the UE to one or more rows of the codebook matrix, and communicate with the base station based at least in part on the UE specific signature sequence.

公开(公告)号：US20190110295A1

公开(公告)日：2019-04-11

申请号：US16131966

申请日：2018-09-14

Applicant: QUALCOMM Incorporated

Inventor： Seyong Park ,  Pinar Sen ,  Jay Kumar Sundararajan ,  Joseph Binamira Soriaga ,  Tingfang Ji ,  Naga Bhushan

IPC: H04W72/04 ,  H04L25/03 ,  H04L1/00 ,  H04L5/00 ,  H04L27/38 ,  H04L27/26

Abstract: The present disclosure describes the generation of long sequences from short sequences to support concurrent transmissions of large numbers of machine-type communication devices operating in a wireless communication system. These long sequences may be assigned to devices so that the devices can use the long sequences scramble their transmissions. The use of such long sequences permits many machine-type communication devices to transmit during the same time and frequency resource.

公开(公告)号：US20190097677A1

公开(公告)日：2019-03-28

申请号：US16143337

申请日：2018-09-26

Applicant: QUALCOMM Incorporated

Inventor： Pinar Sen ,  Seyong Park ,  Haitong Sun ,  Naga Bhushan ,  Tingfang Ji ,  Tugcan Aktas

IPC: H04B1/7103 ,  H04W72/04 ,  H04J13/18 ,  H04B1/7073

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may use a lower code rate by splitting a data stream into multiple data sub-streams. The UE may split the data stream to synchronously encode, modulate, and spread the data sub-streams at different layers. Then, the UE may superpose or combine the sub-streams together. The UE may scramble the combined data stream with a UE-specific scrambling code. In some examples, the UE may then apply a cyclic prefix to the combined data stream. The UE may then transmit the combined data stream to a base station. The receiving base station may use layer-wise matched filters and element-wise signal estimators (ESE) to obtain soft information such as log-likelihood ratios. Channel decoders may then determine estimated bits for each layer of each user of the combined data stream.

公开(公告)号：US10218608B2

公开(公告)日：2019-02-26

申请号：US15482510

申请日：2017-04-07

Applicant: QUALCOMM Incorporated

Inventor： Seyong Park ,  Wei Zeng ,  Haitong Sun ,  Joseph Binamira Soriaga ,  Tingfang Ji

IPC: H04L5/00 ,  G06F17/22 ,  H04B1/713 ,  H04B7/212 ,  H04J13/00 ,  H04J13/12 ,  H04L25/03 ,  H04L27/26 ,  H04W72/04 ,  H04L12/753

Abstract: Various additional and alternative aspects are described herein. In some aspects, the present disclosure provides a method of communication by an apparatus. The method includes selecting one or more resources for transmitting data of a first data stream based on an acyclic graph. The selected resources conform to the acyclic graph comprising data streams at odd levels of the acyclic graph and resources at even levels of the acyclic graph. The acyclic graph includes edges between each level of the acyclic graph. The edges connect the resources allocated to each data stream. The method further includes transmitting the data of the first data stream on the selected one or more resources.

公开(公告)号：US20180139735A1

公开(公告)日：2018-05-17

申请号：US15812994

申请日：2017-11-14

Applicant: QUALCOMM Incorporated

Inventor： Sony Akkarakaran ,  Tao Luo ,  Wanshi Chen ,  Hao Xu ,  Peter Gaal ,  Yi Huang ,  Renqiu Wang ,  Seyong Park

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

CPC classification number: H04W72/042 ,  H04B7/212 ,  H04L5/0048 ,  H04L5/005 ,  H04L5/0051 ,  H04L5/0053 ,  H04L5/14 ,  H04L5/1469 ,  H04W72/0446

Abstract: Aspects of the disclosure relate to wireless communication systems configured to provide techniques for strategically placing a sounding reference signal (SRS) within a slot to improve the decoding timeline. Aspects of the disclosure further relate to wireless communication systems configured to optimize the physical downlink control channel (PDCCH) search space within a slot to improve the decoding timeline. Features may also include placing the SRS near the end of the slot, such as after the uplink user data traffic and the corresponding uplink demodulation reference signal (DMRS). In addition, features may also include identifying the PDCCH search space within the slot based on at least a slot index of the slot. Other aspects, embodiments, and features are also claimed and described.

公开(公告)号：US20170164390A1

公开(公告)日：2017-06-08

申请号：US15187588

申请日：2016-06-20

Applicant: QUALCOMM Incorporated

Inventor： Wei Zeng ,  Joseph Binamira Soriaga ,  Seyong Park ,  Tingfang Ji

IPC: H04W72/12 ,  H04L1/00 ,  H04W72/04 ,  H04W72/08

CPC classification number: H04W72/1268 ,  H04L1/0003 ,  H04W72/0446 ,  H04W72/082 ,  H04W72/1273 ,  H04W74/006

Abstract: Aspects of the present disclosure provide for a network assisted grantless data transmission method operable in a wireless communication network. A wireless device may transmit grantless data without requesting a scheduling entity to grant and schedule network resources prior to the grantless data transmission. A scheduling entity determines interference tolerance information of a plurality of uplink channels, wherein the interference tolerance information is configured to individually indicate an availability of each of the plurality of uplink channels for grantless uplink data transmission. The scheduling entity broadcasts the interference tolerance information to one or more subordinate entities or wireless devices.