公开(公告)号：US11637593B2

公开(公告)日：2023-04-25

申请号：US15202901

申请日：2016-07-06

Applicant: QUALCOMM Incorporated

Inventor： Renqiu Wang ,  Hao Xu ,  Wanshi Chen ,  Peter Gaal ,  Yongbin Wei

IPC: H04W72/04 ,  H04B7/04 ,  H04W4/70 ,  H04L5/00 ,  H04B17/382 ,  H04L47/70 ,  H04W28/02 ,  H04B7/06 ,  H03M13/15 ,  H04W88/02

Abstract: Certain aspects of the present disclosure generally relate to wireless communications, and more specifically increasing user capacity through a frame structure which supports enhanced Machine Type Communication (eMTC) UL multi-user multiplexing. For example, a User Equipment (UE) identifies at least one narrowband region within a wider system bandwidth. The UE receives signaling, from a base station, indicating a sub-region of the narrowband region assigned to the UE for transmitting symbols of a physical uplink channel that are multiplexed with symbols transmitted by one or more other UEs in the narrowband region. The UE transmits the physical uplink channel in the assigned sub-region. Similar techniques are also provided that may be applied to DL multi-user multiplexing.

公开(公告)号：US11581999B2

公开(公告)日：2023-02-14

申请号：US14876678

申请日：2015-10-06

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Michael Mao Wang ,  Hao Xu ,  Yongbin Wei ,  Peter Gaal

IPC: H04L5/00 ,  H04W4/70 ,  H04W72/00

Abstract: Methods, systems, and devices are described for reference signal design in wireless communications. A base station may select a reference signal density scheme from a set of available density schemes associated with a port count. The reference signal density scheme may also be selected based on the category of the mobile device receiving the reference signal transmissions. The reference signal density scheme may be a higher density reference signal density scheme or a lower density reference signal density scheme, where the higher density reference signal density scheme includes more reference signal resource elements per subframe. The mobile device may determine the reference signal density scheme based on characteristics of a channel. The higher density reference signal density scheme may provide additional channel estimation opportunities for the mobile device. In some cases, the mobile device sends the channel estimated based on the received reference signals to the base station.

公开(公告)号：US11576211B2

公开(公告)日：2023-02-07

申请号：US17090393

申请日：2020-11-05

Applicant: QUALCOMM INCORPORATED

Inventor： Yisheng Xue ,  Chih-Hao Liu ,  Xiaoxia Zhang ,  Jing Sun ,  Yongbin Wei ,  Seyed Ali Akbar Fakoorian

IPC: H04W74/08 ,  H04W72/04 ,  H04W92/18 ,  H04W16/14

Abstract: Wireless communications systems and methods related to autonomous sidelink communication in a radio frequency band (e.g., in a shared spectrum or an unlicensed spectrum) shared by multiple network operating entities are provided. A first user equipment (UE) performs a listen-before-talk (LBT) in a shared radio frequency band based on a first starting point of a plurality of starting points within an LBT gap duration. The first UE transmits, to a second UE, a first sidelink communication in the shared radio frequency band based on the LBT, the first sidelink communication including first sidelink control information (SCI) and first sidelink data.

公开(公告)号：US11516761B2

公开(公告)日：2022-11-29

申请号：US16535723

申请日：2019-08-08

Applicant: QUALCOMM incorporated

Inventor： Hao Xu ,  Durga Prasad Malladi ,  Naga Bhushan ,  Tingfang Ji ,  Peter Gaal ,  Wanshi Chen ,  Tao Luo ,  Yongbin Wei ,  Aleksandar Damnjanovic

IPC: H04L47/283 ,  H04W56/00 ,  H04W72/04 ,  H04J3/14 ,  H04J1/16 ,  H04J3/16 ,  H01Q5/25 ,  H04L5/00 ,  H04L5/06 ,  H04B7/204 ,  H04W74/08 ,  H04W28/02 ,  H04L1/00 ,  H04L5/14

Abstract: Methods, systems, and devices are described for low latency communications within a wireless communications system. An eNB and/or a UE may be configured to operate within the wireless communications system and may send triggers to initiate communications using a dedicated resource in a wireless communications network that supports transmissions having a first subframe type and a second subframe type, the first subframe type comprising symbols of a first duration and the second subframe type comprising symbols of a second duration that is shorter than the first duration. Communications may be initiated by transmitting a trigger from the UE or eNB using the dedicated resource, and initiating communications following the trigger. The duration of time between the trigger and initiating communications can be significantly shorter than the time to initiate communications using legacy LTE communications.

公开(公告)号：US11510065B2

公开(公告)日：2022-11-22

申请号：US16748227

申请日：2020-01-21

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Yongbin Wei

IPC: H04W16/14 ,  H04W74/04 ,  H04W84/12

Abstract: Wireless communications systems and methods related to automatic frequency coordination (AFC) for spectrum sharing among multiple network operating entities are provided. A first wireless communication device transmits, to a spectrum access coordination entity, a spectrum access request. The first wireless communication device receives, from the spectrum access coordination entity in response to the spectrum access request, a configuration including at least a medium access protocol parameter for performing a medium access procedure in a spectrum shared by a plurality of network operating entities.

公开(公告)号：US11483794B2

公开(公告)日：2022-10-25

申请号：US16989745

申请日：2020-08-10

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Srinivas Yerramalli ,  Taesang Yoo ,  Junyi Li ,  Yongbin Wei ,  Sudhir Kumar Baghel ,  Shailesh Patil ,  Kapil Gulati ,  Chang-Sik Choi

IPC: H04W64/00 ,  H04W4/029 ,  H04W4/40 ,  H04W74/08 ,  G01S11/04 ,  G01S5/02 ,  H04L5/00

Abstract: This disclosure provides systems, methods and apparatuses for wireless communication that may allow a user equipment (UE) to determine its relative position and distances to other UEs more accurately than standard vehicle-to-everything (V2X) communications allow. In some implementations, a UE (or other wireless communication device) participating in a positioning operation may transmit and receive positioning signals on an unlicensed radio band, and may transmit and receive non-positioning signals on a V2X channel (or on another suitable channel) of a radio access network (RAN). The positioning signals may include positioning reference signals (PRSs) associated with observed time difference of arrival (OTDOA) positioning operations, ranging signals associated with round-trip time (RTT) positioning operations, or other suitable signals from which the position of the UE can be determined.

公开(公告)号：US11470621B2

公开(公告)日：2022-10-11

申请号：US16923515

申请日：2020-07-08

Applicant: QUALCOMM Incorporated

Inventor： Juan Montojo ,  Farhad Meshkati ,  Yongbin Wei ,  Taesang Yoo ,  Xiaoxia Zhang

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

Abstract: Wireless communications systems and methods related to improving detectability of interference management signals are provided. A first wireless communication device communicates, with a second wireless communication device, a first reservation signal indicating a reservation for a first transmission slot in a spectrum accessed 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 a plurality of network operating entities. The first reservation signal includes a duration based on a power class associated with the first network operating entity. The first wireless communication device communicates, with the second wireless communication device, a first communication signal in the first transmission slot.

公开(公告)号：US11432334B2

公开(公告)日：2022-08-30

申请号：US16811207

申请日：2020-03-06

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Yisheng Xue ,  Jing Sun ,  Yongbin Wei

IPC: H04W74/08 ,  H04W72/04 ,  H04W76/10

Abstract: This disclosure describes methods, devices, and systems for techniques related to random access channel (RACH) operation. A user equipment (UE) may establish a connection with a base station using a random access procedure. Based on a transmission priority or a network parameter, the random access procedure may be a two-step random access procedure or a four-step random access procedure. The described techniques may support physical layer procedures, including resource configurations and communication schemes that may support enhanced signaling capacity. In some examples, the described techniques may include signaling characteristics and resource mappings for two-step random access procedure based on a transmission priority. In other examples, the described techniques may include antenna techniques associated with a four-step random access procedure. The physical layer procedures may include features for improved data rates, increased spectral efficiency and, in some examples, may promote low latency communication associated with random access, among other advantages.

公开(公告)号：US11387880B2

公开(公告)日：2022-07-12

申请号：US16804828

申请日：2020-02-28

Applicant: QUALCOMM Incorporated

Inventor： Weiliang Zeng ,  Taesang Yoo ,  Sanaz Barghi ,  Naga Bhushan ,  Pavan Kumar Vitthaladevuni ,  Krishna Kiran Mukkavilli ,  Xiaoxia Zhang ,  Tingfang Ji ,  Yongbin Wei

IPC: H04B7/06 ,  H04B7/0417 ,  H04B7/0456 ,  H04L1/00 ,  H04L5/00

Abstract: Systems and methods facilitating feedback of robust channel state information (CSI), such as to provide full CSI feedback or otherwise providing CSI feedback, are described. CSI encoders and/or decoders used by network nodes may implement channel compression/reconstruction based upon neural-network (NN) training of collected channels. A structured payload having an interpretable payload portion and an uninterpretable payload portion may utilized with respect to CSI feedback. The channel compression provided according to some aspects of the disclosure supports feedback of robust CSI, in some instances including full CSI, as determined by a particular network node. Other aspects and features are also claimed and described.

公开(公告)号：US20220159499A1

公开(公告)日：2022-05-19

申请号：US17649765

申请日：2022-02-02

Applicant: QUALCOMM Incorporated

Inventor： Yisheng Xue ,  Xiaoxia Zhang ,  Aleksandar Damnjanovic ,  Jing Sun ,  Yongbin Wei

IPC: H04W24/10 ,  H04L5/00 ,  H04W72/04 ,  H04W72/12

Abstract: Uplink clear channel assessment (CCA) status is disclosed as a new uplink control message for new radio (NR) unlicensed (NR-U) operations. When an opportunity for potential uplink transmissions arises for a user equipment (UE), the UE will perform a CCA procedure on available uplink resources. The UE reports the results of the CCA procedure to a serving base station via an uplink control message, such as an uplink control information (UCI), physical uplink control channel (PUCCH), or the like. The serving base station may then use the CCA results in scheduling uplink transmissions and reserving uplink resources.