公开(公告)号：US20190182002A1

公开(公告)日：2019-06-13

申请号：US16272407

申请日：2019-02-11

Applicant: QUALCOMM Incorporated

Inventor： Jing Lei ,  Peter Gaal ,  Hao Xu ,  Wanshi Chen ,  Yongbin Wei ,  Xiao Feng Wang ,  Renqiu Wang ,  Seyed Ali Akbar Fakoorian ,  Madhavan Srinivasan Vajapeyam ,  Alberto Rico Alvarino ,  Juan Montojo

IPC: H04L5/00 ,  H04W56/00 ,  H04L27/26 ,  H04J11/00 ,  H04W72/04

Abstract: Aspects of the present disclosure provide techniques for design of synchronization signals for narrowband operation, which can be used for stand-alone/in-band/guard-band deployment. An example method is provided for operations which may be performed by a base station (BS). The example method generally includes generating a primary synchronization signal (PSS) utilizing a first code sequence and a cover code applied to the first code sequence over a first number of symbols within one or more subframes, generating a secondary synchronization signal (SSS) based on a second code sequence over a second number of symbols within one or more subframes, and transmitting the PSS and the SSS in the first and second subframes to a first type of a user equipment (UE) that communicates on one or more narrowband regions of wider system bandwidth.

公开(公告)号：US10285144B2

公开(公告)日：2019-05-07

申请号：US15245498

申请日：2016-08-24

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：US20190059085A1

公开(公告)日：2019-02-21

申请号：US16104052

申请日：2018-08-16

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Jing Lei

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

Abstract: Methods, systems, and devices for wireless communication are described for a channel reservation signal that may be transmitted upon gaining contention-based access to a channel in a shared radio frequency spectrum. The channel reservation signal may include a channel reservation preamble and a channel reservation payload. The channel reservation payload may be formatted with other control channel information transmitted by the transmitter, such as downlink control information (DCI), and aligned with a transmission boundary of the other control channel information. When deployed on a shared medium, a downlink control channel may carry an extra trigger field that may schedule a receiving UE to transmit its own channel reservation signal within an uplink transmission burst.

公开(公告)号：US20170033887A1

公开(公告)日：2017-02-02

申请号：US15212595

申请日：2016-07-18

Applicant: QUALCOMM Incorporated

Inventor： Jing Lei ,  Hao Xu ,  Yongbin Wei ,  Durga Prasad Malladi ,  Peter Gaal

IPC: H04L1/00 ,  H04L12/26 ,  H04L27/26 ,  H04W4/00

CPC classification number: H04L1/0002 ,  H03H17/065 ,  H04L1/0018 ,  H04L27/2602 ,  H04L27/2607 ,  H04L27/2628 ,  H04L27/265 ,  H04W4/70

Abstract: Methods, systems, and devices for wireless communication are described. A wireless device may use a sampling rate that is less than a default sampling rate associated with a wireless carrier. The device may operate in a narrowband portion of a system bandwidth, and the sampling rate may be less than that used by devices monitoring the whole bandwidth. Multiple sampling rates may be used so that a portion of signal processing may be associated with one sampling rate and another portion of the signal processing may be associated with another sampling rate. The size of a cyclic prefix (CP) may be adjusted based on the sampling rate to align subframe timing boundaries for signals of different sampling rates. In some cases, each symbol of a signal may include both a CP and a postfix such that the postfix for each symbol overlaps the prefix of the next symbol.

Abstract translation: 描述了用于无线通信的方法，系统和设备。 无线设备可以使用小于与无线运营商相关联的默认采样率的采样率。 该设备可以在系统带宽的窄带部分中操作，并且采样速率可能小于监视整个带宽的设备使用的采样速率。 可以使用多个采样率，使得信号处理的一部分可以与一个采样率相关联，并且信号处理的另一部分可以与另一采样率相关联。 循环前缀（CP）的大小可以基于采样率来调整，以对准不同采样率的信号的子帧时序边界。 在一些情况下，信号的每个符号可以包括CP和后缀，使得每个符号的后缀与下一符号的前缀重叠。

公开(公告)号：US20160248555A1

公开(公告)日：2016-08-25

申请号：US15017323

申请日：2016-02-05

Applicant: QUALCOMM Incorporated

Inventor： Jing Lei ,  Hao Xu ,  Yongbin Wei

IPC: H04L5/00 ,  H04W74/00 ,  H04W72/04

CPC classification number: H04L5/0005 ,  H04L27/0006 ,  H04L27/2602 ,  H04L27/2613 ,  H04W16/14 ,  H04W72/0453 ,  H04W74/002 ,  H04W74/004 ,  H04W74/0816

Abstract: Methods, systems, and devices are described for wireless communication at a device. A device may distinguish a preamble sent from a device configured for a first RAT (e.g., WLAN, Wi-Fi, etc.) from a preamble sent from a device configured for a second RAT (e.g., LTE, LTE-A, LTE-U, etc.). A wireless device associated with a second RAT may transmit a dual-use preamble over a contention-based frequency channel. The dual-use preamble may function as a valid preamble for a first RAT and may be received and decoded by devices associated with the first RAT in addition to devices associated with the second RAT. The dual-use preamble may also include a signature associated with the second RAT. The signature may be embedded with the preamble such that it minimizes interference with the valid preamble and be detected by devices associated with the second RAT.

Abstract translation: 描述了在设备处的无线通信的方法，系统和设备。 设备可以将从配置用于第一RAT（例如，WLAN，Wi-Fi等）的设备发送的前导码从配置用于第二RAT的设备（例如LTE，LTE-A，LTE- U等）。 与第二RAT相关联的无线设备可以在基于竞争的频率信道上发送双重使用前导码。 双用前置码可以用作第一RAT的有效前导码，并且除了与第二RAT相关联的设备之外，可以由与第一RAT相关联的设备接收和解码。 双重用途前导码还可以包括与第二RAT相关联的签名。 签名可以嵌入前导码，使得其最小化对有效前导码的干扰，并且由与第二RAT相关联的设备检测。

公开(公告)号：US12302158B2

公开(公告)日：2025-05-13

申请号：US17903834

申请日：2022-09-06

Applicant: QUALCOMM Incorporated

Inventor： Jing Jiang ,  Jae Won Yoo ,  Yongle Wu ,  Lei Xiao ,  Hari Sankar ,  Alexei Yurievitch Gorokhov ,  Yu Zhang ,  Wei Yang ,  Jing Lei

IPC: H04W24/10 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communications are described. In some wireless communications systems, a user equipment (UE) and a network entity may utilize multi-port mobility reference signals to assist with spatial based mobility procedures. The UE may receive a reference signal that is associated with multiple antenna ports. The UE may measure a multi-dimensional channel response based on the reference signal. The multi-dimensional channel response may be associated with measured channel metrics corresponding to the multiple antenna ports. The UE may transmit a report that includes a channel measurement vector based on the multi-dimensional channel response. The channel measurement vector may indicate multiple measured channel metrics for one or more dimensions of the multi-dimensional channel response. The network entity may transmit a message that indicates one or more metrics associated with mobility management for the UE based on the report that indicates the channel measurement vector.

公开(公告)号：US12301393B2

公开(公告)日：2025-05-13

申请号：US18156199

申请日：2023-01-18

Applicant: QUALCOMM Incorporated

Inventor： Yiqing Cao ,  Wanshi Chen ,  Jing Lei ,  Renqiu Wang

IPC: H04L27/26 ,  H04L5/00 ,  H04L25/02 ,  H04W72/044

Abstract: Methods, systems, and devices for wireless communications are described. In some systems (e.g., non-orthogonal multiple access (NOMA) systems), a base station may serve a large number of user equipments (UEs) on the uplink. To improve detectability for these uplink transmissions (e.g., if reference signals are not available for the transmissions), the UEs may implement parallel transmissions of preambles with uplink data. A UE may split the uplink data into one or more data layers, and may select one or more preamble layers to transmit superposed with the data layers. These preambles may be sequences known to both the UE and the base station to aid in detectability. The UE may assign different signature sequences to each of these layers based on cross-correlation values (e.g., assigning sequences with higher cross-correlation values to the data layers for improved detectability), and may scramble the layers into a single shared signal for transmission.

公开(公告)号：US12294947B2

公开(公告)日：2025-05-06

申请号：US17755783

申请日：2019-11-25

Applicant: QUALCOMM Incorporated

Inventor： Yiqing Cao ,  Tingfang Ji ,  Wanshi Chen ,  Krishna Kiran Mukkavilli ,  Juan Montojo ,  Peter Pui Lok Ang ,  Jing Lei ,  Huilin Xu ,  Yan Li

IPC: H04W52/02

Abstract: The present disclosure relates to methods and devices for wireless communication at a wireless device of a wireless wearable device. In one aspect, the wireless device may transmit a first report based on one of a location of the wireless wearable device, a time period, or reception of a user-controlled indication to transmit the first report. The wireless device may also receive, based on the transmitted first report, a configuration to switch from a first mode to a second mode. In some aspects, the configuration can include at least one parameter associated with a power savings at the wireless wearable device while in the second mode. Additionally, the wireless device can operate based on the at least one parameter while in the second mode.

公开(公告)号：US12289777B2

公开(公告)日：2025-04-29

申请号：US17632392

申请日：2020-08-04

Applicant: QUALCOMM Incorporated

Inventor： Jing Lei ,  Peter Gaal ,  Wanshi Chen ,  Linhai He ,  Ruiming Zheng ,  Yi Huang ,  Joseph Binamira Soriaga

IPC: H04W74/08 ,  H04L1/00 ,  H04W56/00 ,  H04W74/0833 ,  H04W76/20

Abstract: Certain aspects of the present disclosure provide techniques for a configurable mode for a response to random access message. A method that may be performed by a user equipment (UE) includes receiving an indication from a base station (BS) that the BS operates according to a first mode in which the BS unicasts a RACH response during a two-step RACH procedure or a second mode in which the BS multicasts the RACH response. The RACH response includes a PDCCH and PDSCH. The UE sends a RACH message to the BS comprising a preamble and payload. The UE monitors and decodes the PDCCH of the RACH response based on the indicated first mode or second mode. The UE decodes the PDSCH of the RACH response and sends feedback to the BS based on the indicated first mode or second mode.

公开(公告)号：US12289767B2

公开(公告)日：2025-04-29

申请号：US17434718

申请日：2020-02-28

Applicant: QUALCOMM Incorporated

Inventor： Linhai He ,  Ruiming Zheng ,  Jing Lei

IPC: H04W72/02 ,  H04W74/0833

Abstract: A configuration for multiple UEs having the same RA-RNTI to generate RA-RNTI for RACH procedures. The apparatus transmits a random access message. The apparatus receives a RAR during a RAR window in response to the random access message. The RAR window spanning at least two system frames. The apparatus determines one or more RA-RNTIs. Each RA-RNTI may be based, at least in part, on a random access channel occasion and type of random access procedure. The apparatus decodes the RAR based on the one or more RA-RNTIs.