公开(公告)号：US10382233B2

公开(公告)日：2019-08-13

申请号：US15395814

申请日：2016-12-30

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Sayed Khairy Abdelghaffar ,  Jing Jiang ,  Seyong Park ,  Wei Zeng ,  Joseph Binamira Soriaga ,  Tingfang Ji

IPC: H04L25/03 ,  H04L27/26 ,  H04B7/26

Abstract: Techniques for processing of symbols (e.g., orthogonal frequency division multiplexing (OFDM) or single carrier-frequency division multiple access (SC-FDMA) symbols) provide enhanced out-of-band (OOB) suppression of the symbols and also provide reduced inter-symbol interference (ISI) between a symbol and a subsequent symbol. Multiple frequency tones of a symbol may be divided into two or more subsets of tones. For example, subsets of tones associated with a head portion or a tail portion of an OFDM symbol may be processed with a relatively long weighted overlap-add (WOLA) weighting length or filtering length, and a subset of tones associated with a center portion of the OFDM symbol may be processed with a relatively short WOLA weighting length or filtering length. Such heterogeneous processing of tones within a symbol may provide enhanced inter-channel interference (ICI) and improved OOB suppression and also provide reduced ISI for the center tones of the symbol.

公开(公告)号：US10285180B2

公开(公告)日：2019-05-07

申请号：US14926809

申请日：2015-10-29

Applicant: QUALCOMM Incorporated

Inventor： Wei Zeng ,  Joseph Binamira Soriaga ,  Tingfang Ji ,  John Edward Smee ,  Naga Bhushan

IPC: H04W72/04 ,  H04W28/26 ,  H04L29/08 ,  H04W72/08 ,  H04W52/02 ,  H04W74/08 ,  H04W72/12 ,  H04W74/00

Abstract: Wireless communications systems and methods related to the reduction in a probability of collision for grant-less transmissions from internet of everything (IOE) devices while not increasing search complexity at a base station are disclosed. An IOE device randomly selects a first access resource from a common pool that the base station searches to initiate a transmission. If a metric associated with the data transmission is predicted to exceed a threshold, the IOE device also requests a second access resource from a reserved access pool from the base station, that the base station does not search. The IOE includes the request in the data transmission. The base station and the IOE device switch to the second access resource after the base station identifies an available resource from the reserved access pool and the IOE device completes the data transmission using the second access resource.

公开(公告)号：US10142074B2

公开(公告)日：2018-11-27

申请号：US15685778

申请日：2017-08-24

Applicant: QUALCOMM Incorporated

Inventor： Renqiu Wang ,  Yi Huang ,  Wanshi Chen ,  Peter Gaal ,  Wei Zeng ,  Hao Xu

IPC: H04W4/00 ,  H04L5/00 ,  H04L27/26 ,  H04W72/04 ,  H04W28/02

Abstract: Certain aspects of the present disclosure generally relate to wireless communications. In some aspects, a wireless communication device may configure a wireless communication structure to include at least a data portion and a common uplink portion, wherein the common uplink portion includes a first symbol and a second symbol, wherein the first symbol precedes the second symbol. The wireless communication device may map at least a portion of one or more reference signals or an uplink payload to at least one of the first symbol or the second symbol.

公开(公告)号：US10038544B2

公开(公告)日：2018-07-31

申请号：US15185315

申请日：2016-06-17

Applicant: QUALCOMM Incorporated

Inventor： Wei Zeng ,  Jing Jiang ,  Joseph Binamira Soriaga ,  Tingfang Ji

IPC: H04L5/14 ,  H04L5/00 ,  H04W52/38 ,  H04W72/04 ,  H04W52/02 ,  H04B1/7107 ,  H04J11/00 ,  H04L1/18 ,  H04B7/0413

CPC classification number: H04L5/14 ,  B64C2201/122 ,  H04B1/71072 ,  H04B7/0413 ,  H04J11/0023 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/1812 ,  H04L5/001 ,  H04L5/0016 ,  H04L5/005 ,  H04L5/0051 ,  H04W52/0216 ,  H04W52/0219 ,  H04W52/0245 ,  H04W52/38 ,  H04W72/0413 ,  H04W72/0446 ,  Y02D70/00 ,  Y02D70/122 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/22 ,  Y02D70/26 ,  Y02D70/444

Abstract: Various aspects of the present disclosure provide for methods, apparatus, and computer software for multiple access to a channel carrying a common uplink burst transmitted by users that utilize two different modes. Specifically, a coupled mode provides for range extension for users at a cell edge, while a decoupled mode provides for user data transmissions within the common uplink burst. Multiple access between these different modes may be provided in a non-orthogonal scheme by moderating the amount of interference between the respective modes. Further, multiple access between these different modes may be provided in an orthogonal scheme by utilizing interleaved frequency division multiple access (IFDMA).

公开(公告)号：US20180205480A1

公开(公告)日：2018-07-19

申请号：US15871901

申请日：2018-01-15

Applicant: QUALCOMM Incorporated

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

IPC: H04J11/00 ,  H04L5/00 ,  H04W72/04 ,  H04W72/08

CPC classification number: H04J11/005 ,  H04L5/0035 ,  H04L5/005 ,  H04L5/0053 ,  H04L5/0073 ,  H04L5/0091 ,  H04L5/1469 ,  H04W24/02 ,  H04W24/10 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/0446 ,  H04W72/082

Abstract: Various reference signal (RS) designs and arrangements for interference coordination and management in wireless communication are disclosed. Reference signals may be included in uplink (UL) and downlink (DL) transmissions for facilitating data demodulation and other purposes, and the locations of the reference signals within any given slot may depend on various factors. In some aspects of this disclosure, reference signals included in UL and/or DL transmissions of neighboring cells may be aligned in time and/or frequency to improve interference control and coordination between devices operating in different cells.

公开(公告)号：US20180198660A1

公开(公告)日：2018-07-12

申请号：US15850821

申请日：2017-12-21

Applicant: QUALCOMM Incorporated

Inventor： Yi Huang ,  Wei Zeng ,  Hao Xu ,  Wanshi Chen ,  Peter Gaal ,  Renqiu Wang

IPC: H04L27/26

CPC classification number: H04L27/2627 ,  H04B7/0667 ,  H04J11/00 ,  H04J13/00 ,  H04J13/004 ,  H04J2211/006 ,  H04L1/0618 ,  H04L1/0625 ,  H04L5/0007 ,  H04L5/0016 ,  H04L5/0037 ,  H04L5/0044 ,  H04L5/0062 ,  H04L5/0083 ,  H04L5/0091 ,  H04L5/1469 ,  H04L27/2636 ,  H04L2001/0092

Abstract: Methods, systems, and devices for wireless communication are described that support multiplexing uplink transmissions with transmit diversity with a single carrier waveform. Two or more UEs may be configured to use space time block codes (STBC) for transmissions using multiple uplink antennas. A first UE may be configured to use a first STBC for a first uplink transmission. An orthogonal cover code (OCC), such as a Walsh code, may be applied to the first STBC to generate a second STBC, and a second UE may use the second STBC for a second uplink transmission. The first UE and the second UE may concurrently transmit the first uplink transmission and the second uplink transmission. The first STBC and the second STBC may be applied across multiple OFDM symbols, or may be applied within an OFDM symbol on a modulated symbol level.

公开(公告)号：US20180184424A1

公开(公告)日：2018-06-28

申请号：US15850577

申请日：2017-12-21

Applicant: QUALCOMM Incorporated

Inventor： Renqiu Wang ,  Wei Zeng ,  Naga Bhushan ,  Hao Xu ,  Wanshi Chen

IPC: H04W72/04 ,  H04W72/14 ,  H04L5/00 ,  H04L1/18

Abstract: Various aspects of the present disclosure provides methods and techniques for flexible positioning of a uplink short burst in NR communications. In one example, the uplink short burst may have a slot position that at any position of the uplink centric slot. For instance, a downlink centric slot may contain control signals from a base station, such as a grant, that indicate the slot position of the uplink short burst. The grant may indicate, explicitly or implicitly, the position within an uplink centric slot that should be assigned to an uplink short burst. The UE may then transmit a response including an uplink short burst within the indicated slot position of an uplink centric slot. The various aspects may thus enable the dynamic assignment of uplink short bursts within uplink centric slots.

公开(公告)号：US20180139648A1

公开(公告)日：2018-05-17

申请号：US15707607

申请日：2017-09-18

Applicant: QUALCOMM Incorporated

Inventor： Seyong Park ,  Wanshi Chen ,  Hao Xu ,  Wei Zeng ,  Renqiu Wang ,  Peter Gaal ,  Tingfang Ji ,  John Edward Smee

IPC: H04W28/04 ,  H04W72/08 ,  H04L1/00

CPC classification number: H04W28/04 ,  H04B7/0452 ,  H04B7/0848 ,  H04J11/0023 ,  H04J2011/0096 ,  H04L1/0038 ,  H04L1/0045 ,  H04L5/0007 ,  H04L5/0035 ,  H04L5/0044 ,  H04L5/0092 ,  H04L25/0202 ,  H04L25/0204 ,  H04L25/0224 ,  H04W72/082

Abstract: Signaling strategies for an advanced receiver with interference cancellation (IC) and suppression is discussed. Upon enablement of an advanced interference cancellation procedure according to the disclosure, transmitters within the enabled area transmit according to transmission restriction configurations that provide transmission limits based on either frequency, time, or scheduling. The restrictions on the transmitters reduces the complexity of processing by neighboring advanced receivers for cancellation of interference from the restricted transmitters. At the advanced receiver, transmission information, such as scheduling, reference signal (RS), resource block (RB) allocation, and the like, may either be determined through blind detection or received directly through signaling. The advanced receiver may use this transmission information associated with each interfering signal to detect, decode, and subtract the interfering signals from the received transmissions.

公开(公告)号：US20180092095A1

公开(公告)日：2018-03-29

申请号：US15612762

申请日：2017-06-02

Applicant: QUALCOMM Incorporated

Inventor： Wei Zeng ,  Wanshi Chen ,  Tingfang Ji ,  Peter Gaal

IPC: H04W72/04 ,  H04L5/00

CPC classification number: H04W72/0453 ,  H04L5/0007 ,  H04L5/001 ,  H04L5/0064 ,  H04L5/0091 ,  H04L5/1453 ,  H04L27/0012 ,  H04L27/2636 ,  H04L27/2646 ,  H04L27/2666 ,  H04W72/042 ,  H04W88/06

Abstract: Techniques are described that provide for waveform selection for uplink (UL) and/or downlink (DL) wireless transmissions based on one or more factors associated with the wireless transmission, a transmitter that is to transmit the wireless transmission, or combinations thereof. UL and DL transmissions may use one of a number of different waveforms, such as single-carrier waveforms that use a single carrier for information transmission of a wireless channel, and multi-carrier waveforms that use multiple carriers at different frequencies to transmit some of the bits on each channel. Multi-carrier transmission waveforms or single-carrier waveforms may be selected for wireless transmissions based on a bandwidth allocated for the transmissions, a capability of a transmitter that is to transmit the transmissions, or combinations thereof.

公开(公告)号：US20180083818A1

公开(公告)日：2018-03-22

申请号：US15491337

申请日：2017-04-19

Applicant: QUALCOMM Incorporated

Inventor： Yi HUANG ,  Wanshi Chen ,  Hao Xu ,  Wei Zeng

IPC: H04L27/26 ,  H04L5/00 ,  H04W72/04

CPC classification number: H04L27/2613 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0051 ,  H04L27/2611 ,  H04W72/0446

Abstract: A method and apparatus for demodulation reference signal (DMRS) communication are described. The method and apparatus include determining a DMRS pattern for at least two multiplexing schemes. In some aspects, the at least two multiplexing schemes may include orthogonal frequency-division multiplexing (OFDM) and single carrier frequency-division multiplexing (SC-FDM). Further, in some aspects, the DMRS pattern may correspond to a continuous tone pattern in each subframe transmitted in accordance with both SC-FDM and OFDM. Additionally, in some aspects, the DMRS pattern may correspond to a comb tone pattern in each subframe transmitted in accordance with both SC-FDM and OFDM. The method and apparatus further include transmitting a DMRS in accordance with at least one of the two multiplexing schemes and based on the DMRS pattern.