公开(公告)号：US20200275492A1

公开(公告)日：2020-08-27

申请号：US16742597

申请日：2020-01-14

Applicant: QUALCOMM Incorporated

Inventor： Jing Lei ,  Peter Gaal ,  Joseph Binamira Soriaga ,  Wanshi Chen ,  Seyong Park

IPC: H04W74/08 ,  H04L5/00 ,  H04W72/04 ,  H04L27/26 ,  H04W56/00

Abstract: Methods, systems, and devices for wireless communications are described in which a UE may determine a time duration of a transmission gap between a random access preamble and random access payload. The time duration of the transmission gap may be based on a configuration of the random access channel resources, a timing adjustment (e.g., an estimated propagation delay) for uplink transmissions from the UE, a beam management procedure at the UE and/or the base station, or combinations thereof. The UE may select an initial transmission gap duration based on the configuration of the random access channel resources, and may adjust the initial transmission gap duration based on the timing adjustment. Multiple UEs may be configured such that random access channel transmissions align with a random access occasion (RO) window. A base station may decode messages from multiple UEs using joint or successive decoding to recover the corresponding random access messages.

公开(公告)号：US20200260499A1

公开(公告)日：2020-08-13

申请号：US16783149

申请日：2020-02-05

Applicant: QUALCOMM Incorporated

Inventor： Gabi Sarkis ,  Jing Lei ,  Alexandros Manolakos ,  Alberto Rico Alvarino ,  Chih-Ping Li ,  Seyedkianoush Hosseini

IPC: H04W74/08 ,  H04L5/10 ,  H04W74/02 ,  H04L5/00 ,  H04W74/00 ,  H04W56/00

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may use easily detectable transmission parameters to infer difficult-to-detect parameters for communications with a base station. For example, the base station may provide the UE with multiple sets of transmission parameters, and the UE 115 may choose from among these sets of transmission parameters for the communications. In some cases, the UE may be configured with a reference set of transmission parameters, receive one or more transmission parameters that are different relative to the reference set of transmission parameters, and then determine to use the different transmission parameters for the communications. Additionally or alternatively, the multiple sets of transmission parameters may be specified for a certain uplink message (e.g., random access channel messages), where the UE selects the transmission parameter set based on one or more characteristics of the uplink message.

公开(公告)号：US10673675B2

公开(公告)日：2020-06-02

申请号：US16030335

申请日：2018-07-09

Applicant: QUALCOMM Incorporated

Inventor： Jing Lei ,  Jing Sun ,  Tamer Kadous

IPC: H04L27/36 ,  H04L27/38 ,  H04B7/0408 ,  H04L27/34 ,  H04B7/0452 ,  H04B7/06 ,  H04L27/26 ,  H04B7/10 ,  H04W16/28 ,  H04W72/04 ,  H04J14/06 ,  H04L5/00 ,  H04J3/02

Abstract: Certain aspects of the present disclosure generally relate to wireless communication. More particularly, aspects of the present disclosure provide multiplexing schemes which may be suited for the single carrier waveform. For example, some techniques and apparatuses described herein permit multiplexing of multiple, different data streams without destroying the single-carrier properties of the waveform. Additionally, or alternatively, some techniques and apparatuses described herein may provide unequal error protection, unequal bandwidth allocation, and/or the like as part of the multiplexing schemes. Examples of multiplexing schemes described herein include in-phase/quadrature (I/Q) multiplexing, superposition quadrature amplitude modulation (QAM) based at least in part on layered bit mapping, polarization division multiplexing of QAM with superposition coding, and frequency division multiplexing using UE-specific beams.

公开(公告)号：US10673674B2

公开(公告)日：2020-06-02

申请号：US16030327

申请日：2018-07-09

Applicant: QUALCOMM Incorporated

Inventor： Jing Lei ,  Jing Sun ,  Tamer Kadous

IPC: H04L27/36 ,  H04L27/38 ,  H04B7/0408 ,  H04L27/34 ,  H04B7/0452 ,  H04B7/06 ,  H04L27/26 ,  H04B7/10 ,  H04W16/28 ,  H04W72/04 ,  H04J14/06 ,  H04L5/00 ,  H04J3/02

Abstract: Certain aspects of the present disclosure generally relate to wireless communication. More particularly, aspects of the present disclosure provide multiplexing schemes which may be suited for the single carrier waveform. For example, some techniques and apparatuses described herein permit multiplexing of multiple, different data streams without destroying the single-carrier properties of the waveform. Additionally, or alternatively, some techniques and apparatuses described herein may provide unequal error protection, unequal bandwidth allocation, and/or the like as part of the multiplexing schemes. Examples of multiplexing schemes described herein include in-phase/quadrature (I/Q) multiplexing, superposition quadrature amplitude modulation (QAM) based at least in part on layered bit mapping, polarization division multiplexing of QAM with superposition coding, and frequency division multiplexing using UE-specific beams.

公开(公告)号：US10531456B2

公开(公告)日：2020-01-07

申请号：US15348789

申请日：2016-11-10

Applicant: QUALCOMM Incorporated

Inventor： Renqiu Wang ,  Hao Xu ,  Peter Gaal ,  Alberto Rico Alvarino ,  Xiao Feng Wang ,  Seyed Ali Akbar Fakoorian ,  Jing Lei

IPC: H04W72/04 ,  H04W4/06 ,  H04L29/08 ,  H04L27/26 ,  H04W72/00 ,  H04W72/14

Abstract: NB wireless communication involves numerous challenges. A limited frequency dimension may need to be shared by multiple users. At times, large data transmissions, including multiple TBs of data may be transmitted using NB communication, and it may be important that each TB be successfully received by the users. The apparatus may transmit data comprising a plurality of TBs in a narrow band communications system, including repeating a transmission of the plurality of TBs, using any of a number of repetition patterns. The apparatus may use error correction encoding across multiple TBs. The transmission may be a single cell transmission or a multi-cell transmission.

公开(公告)号：US20190312763A1

公开(公告)日：2019-10-10

申请号：US16351302

申请日：2019-03-12

Applicant: QUALCOMM Incorporated

Inventor： Jing Lei ,  Srinivas Yerramalli ,  Tamer Kadous

IPC: H04L27/10 ,  H04L1/00 ,  H04J13/00 ,  H04L27/26

Abstract: Flexible waveform synthesis is disclosed for new radio (NR) shared spectrum (NR-SS) networks. In order to accommodate variable transmission resources, a transmitter may construct an M×N grid to model a resource element (RE) map of transmission resources available to the transmitter within a shared communication channel, where M corresponds to a number of symbols for a scheduled physical signal and N corresponds to a number of tones of a transmission bandwidth for the transmitter. The transmitter may then map the M×N grid to the RE map and puncture one or more REs associated with the subbands unavailable for transmission in the transmission resources. The transmitter may then transmit a transmission according to the unpunctured REs of the RE map.

公开(公告)号：US10433180B2

公开(公告)日：2019-10-01

申请号：US15829094

申请日：2017-12-01

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Taesang Yoo ,  Seyed Ali Akbar Fakoorian ,  Jing Lei

IPC: H04W16/14 ,  H04W72/10 ,  H04W72/12 ,  H04W74/08 ,  H04W74/02

Abstract: Wireless communications systems and methods related to dynamic medium sharing are provided. A first wireless communication device communicates with a second wireless communication device, a reservation request (RRQ) for a transmission opportunity (TXOP) in a shared spectrum. The shared spectrum is shared by a plurality of network operating entities. The first wireless communication device and the second wireless communication device are associated with a first network operating entity of the plurality of network operating entities. The RRQ indicates a first traffic priority of data to be communicated. The first wireless communication device communicates with the second wireless communication device, the data of the first traffic priority during the TXOP.

公开(公告)号：US20190260418A1

公开(公告)日：2019-08-22

申请号：US16280879

申请日：2019-02-20

Applicant: QUALCOMM Incorporated

Inventor： Seyong Park ,  Peter Gaal ,  Wanshi Chen ,  Jing Lei ,  Jay Kumar Sundararajan ,  Renqiu Wang ,  Joseph Binamira Soriaga ,  Naga Bhushan ,  Tingfang Ji ,  John Edward Smee

IPC: H04B1/7093 ,  H04J13/00 ,  G06F17/14 ,  H04W72/04

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a network controller may determine a first set of spreading sequences and a second set of spreading sequences for non-orthogonal multiple access (NOMA) communication, wherein the first set of spreading sequences is different than the second set of spreading sequences; and configure a first cell to use the first set of spreading sequences and a second cell to use the second set of spreading sequences; or configure the first set of spreading sequences to be used for first user equipment associated with a cell center of the first cell and the second set of spreading sequences to be used for second user equipment associated with a cell edge of the first cell or the second cell. Numerous other aspects are provided.

公开(公告)号：US20190260417A1

公开(公告)日：2019-08-22

申请号：US16279953

申请日：2019-02-19

Applicant: QUALCOMM Incorporated

Inventor： Seyong Park ,  Jing Lei ,  Renqiu Wang ,  Joseph Binamira Soriaga ,  Naga Bhushan ,  Tingfang Ji

IPC: H04B1/7093 ,  H04J13/00 ,  H04B7/08 ,  H04B7/06

Abstract: Methods, systems, and devices for wireless communications are described that support pairwise cross correlation sequences for non-orthogonal multiple access wireless communications. A user equipment (UE) may receive, from a base station, an indication of a spreading factor and a number of transmitters in a group of non-orthogonal multiple access (NOMA) transmitters configured for concurrent transmissions. The UE may determine, based on the spreading factor and the number of transmitters, a first spreading sequence of a set of spreading sequences from a first codebook, the first spreading sequence having a defined value for pairwise cross correlation with each spreading sequence of the plurality of spreading sequences. The first UE may identify data to be transmitted in an uplink transmission, apply the first spreading sequence to the data to be transmitted in the uplink transmission, and transmit the uplink transmission to the base station.

公开(公告)号：US20190207723A1

公开(公告)日：2019-07-04

申请号：US16238268

申请日：2019-01-02

Applicant: QUALCOMM Incorporated

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

IPC: H04L5/00 ,  H04L27/06 ,  H04J13/00 ,  H04W76/28 ,  H04W76/27 ,  H04L27/26

Abstract: Methods, systems, and devices for wireless communications are described that provide a number of groups of transmitters, each group of transmitters having at least one user equipment (UE), and each group of transmitters having an associated transmission opportunity (TXO) for transmission of a reference signal. A number of UEs may transmit transmissions to a base station according to non-orthogonal multiple access (NOMA) techniques in which two or more UEs concurrently transmit to the base station. Depending upon a number of UEs, a number of groups of transmitters, an overloading factor of NOMA transmissions, a system bandwidth, a time span of the reference signal TXO, or any combination thereof, a binary or non-binary orthogonal cover code (OCC) may be applied to transmitted reference signals, which the base station may use to identify reference signals from particular UEs.