公开(公告)号：US20210091990A1

公开(公告)日：2021-03-25

申请号：US17010402

申请日：2020-09-02

Applicant: QUALCOMM Incorporated

Inventor： Wei Yang ,  Suhas Subramanya Kowshik ,  Joseph Binamira Soriaga ,  Jing Lei ,  Sayong Park ,  Naga Bhushan

IPC: H04L27/26 ,  H04L1/00 ,  H04W74/08 ,  H04L27/00

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit a random access preamble to a base station as part of a two-step random access procedure. The UE may generate the preamble by identifying a discrete Fourier transform (DFT) matrix and generating a set of sequences based on the DFT matrix. Each sequence of the set of sequences may be generated by selecting a column of the DFT matrix and performing deterministic sampling of respective entries from the selected column in accordance with a sampling function. The UE may then select a sequence from the set of sequences based on generating the set of sequence. The UE may transmit the selected sequence to a wireless device (e.g., a base station).

公开(公告)号：US10958300B2

公开(公告)日：2021-03-23

申请号：US16274100

申请日：2019-02-12

Applicant: QUALCOMM Incorporated

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

IPC: H04W4/00 ,  H04B1/7073 ,  H04J13/16 ,  H04L1/00 ,  H04L5/02 ,  H04L27/18 ,  H04L5/00

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may determine, when using resource spread multiple access with non-orthogonal multiple access, that a particular modulation scheme is enabled. The user equipment may process symbols using a set of processing sequences selected based at least in part on the particular modulation scheme such that the particular modulation scheme is preserved for the symbols. The user equipment may transmit the symbols based at least in part on processing the symbols using the set of processing sequences. Numerous other aspects are provided.

公开(公告)号：US20210051727A1

公开(公告)日：2021-02-18

申请号：US16947662

申请日：2020-08-11

Applicant: QUALCOMM INCORPORATED

Inventor： Jing Lei ,  Yi Huang ,  Peter Gaal ,  Wanshi Chen

IPC: H04W74/08 ,  H04W72/04 ,  H04L1/18

Abstract: Wireless communication devices, systems, and methods related to mechanisms to implement PUCCH resource configuration for two-step RACH for subsequent HARQ messaging. After a UE transmits msgA to a BS, the BS responds with msgB including a PUCCH resource indicator in a DCI of PDCCH, or a PUCCH resource indicator in PDSCH. The UE attempts to decode PDCCH or PDSCH, respectively. Upon decoding, the UE will use the configuration identified by the resource indicator. With the PUCCH resource configuration information, the UE signals a HARQ message.

公开(公告)号：US10924167B2

公开(公告)日：2021-02-16

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 ,  H04J11/00 ,  H04J13/10

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：US20210044380A1

公开(公告)日：2021-02-11

申请号：US16937504

申请日：2020-07-23

Applicant: QUALCOMM Incorporated

Inventor： Hung Dinh Ly ,  Renqiu Wang ,  Krishna Kiran Mukkavilli ,  Huilin Xu ,  Seyedkianoush Hosseini ,  Tingfang Ji ,  Peter Pui Lok Ang ,  Alberto Rico Alvarino ,  Le Liu ,  Jing Lei ,  Peter Gaal

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

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive signaling that configures a downlink bandwidth for a broadcast channel transmission (e.g., a physical downlink control channel transmission). The UE may determine a bandwidth of the capability is less than the downlink bandwidth, and monitor search space occasions in a period to receive samples of the broadcast channel. The period and the search space occasions may be associated with a control resource set and a search space set. The UE may receive the samples in non-overlapping subbands of the bandwidth according to the bandwidth capability, and detect the broadcast channel based on the samples. The UE may additionally monitor repeated transmission occasions in the period based on detecting the broadcast channel to detect a second broadcast channel (e.g., a physical downlink shared channel).

公开(公告)号：US10904847B2

公开(公告)日：2021-01-26

申请号：US16359848

申请日：2019-03-20

Applicant: QUALCOMM Incorporated

Inventor： Jing Lei ,  Hao Xu ,  Peter Gaal ,  Xiaofeng Wang ,  Wanshi Chen ,  Yongbin Wei ,  Juan Montojo ,  Alberto Rico Alvarino

IPC: H04W56/00 ,  H04L5/00 ,  H04J13/00 ,  H04W16/32 ,  H04L27/26 ,  H04W88/08 ,  H04W88/12

Abstract: Aspects of the present disclosure provide techniques for design of synchronization signals for narrowband operation and other clean-slate, OFDM based systems such as enhanced component carrier (eCC) systems. An example method is provided for operations which may be performed by a BS to generate and transmit a dual-layer PSS, and correspondingly, techniques for a UE to detect the dual-layer PSS. The PSS may be generated utilizing a binary code cover and at least one sequence applied to a number of symbols within one or more subframes of a frame.

公开(公告)号：US10893520B2

公开(公告)日：2021-01-12

申请号：US15244653

申请日：2016-08-23

Applicant: QUALCOMM Incorporated

Inventor： Alberto Rico Alvarino ,  Wanshi Chen ,  Seyed Ali Akbar Fakoorian ,  Peter Gaal ,  Shimman Arvind Patel ,  Madhavan Srinivasan Vajapeyam ,  Renqiu Wang ,  Jing Lei ,  Hao Xu

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

Abstract: Various techniques for narrowband communications in a wireless communications network are provided. Narrowband communications may be transmitted using a single resource block (RB) of a number of RBs used for wideband communications. In order to provide for efficient device discovery and synchronization using narrowband communications, a synchronization signal, such as a primary synchronization signal (PSS) or secondary synchronization signal (SSS), may be transmitted within the single resource block. The synchronization signal may be transmitted, for example, using multiple orthogonal frequency division multiplexing (OFDM) symbols within the single RB. A common reference signal (CRS) may also be present in the single resource block, which may puncture the synchronization signal, in some examples. In other examples, the synchronization signal may be mapped to non-CRS symbols of the single resource block.

公开(公告)号：US20200288504A1

公开(公告)日：2020-09-10

申请号：US16785345

申请日：2020-02-07

Applicant: QUALCOMM Incorporated

Inventor： Jing Lei ,  Wanshi Chen

IPC: H04W74/08 ,  H04W72/14 ,  H04W72/04

Abstract: Aspects described herein relate to transmitting, to a base station, a random access message in a two-step random access procedure, and receiving, from the base station, a response message for the random access message in the two-step random access procedure, wherein the response message is formatted based at least in part on at least one of a use case associated with the random access message and whether the random access message is successfully received.

公开(公告)号：US10771105B2

公开(公告)日：2020-09-08

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: H04B1/709 ,  H04B1/7093 ,  H04J13/00 ,  G06F17/14 ,  H04W72/04 ,  H04J13/16 ,  H04B1/69 ,  H04J11/00

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：US10742372B2

公开(公告)日：2020-08-11

申请号：US16373113

申请日：2019-04-02

Applicant: QUALCOMM Incorporated

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

IPC: H04L5/00 ,  H04B1/7103

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine that a resource spread multiple access scheme is enabled, wherein the bit and/or symbol level resource spreading happens in time and/or frequency domain through bits or symbol level repetition and spreading. Furthermore, the UE may process bits of codewords and modulated symbols using a set of spreading sequences and a set of scrambling sequences. The UE may transmit the modulated symbols with a discrete-Fourier-transform (DFT)-spread (DFT-s) waveform based at least in part on processing the modulated symbols using the set of spreading sequences and the set of scrambling sequences. Numerous other aspects are provided.