公开(公告)号：US11032812B2

公开(公告)日：2021-06-08

申请号：US16804971

申请日：2020-02-28

Applicant: QUALCOMM INCORPORATED

Inventor： Jing Sun ,  Xiaoxia Zhang ,  Kapil Bhattad ,  Ananta Narayanan Thyagarajan

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

Abstract: Wireless communications systems and methods related to signaling transmission starting offsets for uplink transmissions in a frequency spectrum shared by multiple network operating entities are provided. A first wireless communication device communicates, with a second wireless communication device, a cyclic prefix (CP) extension length configuration for providing a gap duration for a listen-before-talk (LBT) associated with a first communication signal. The first wireless communication device communicates, with the second wireless communication device, the first communication signal including a CP extension having a length based on the CP extension length configuration.

公开(公告)号：US20210160868A1

公开(公告)日：2021-05-27

申请号：US17248679

申请日：2021-02-02

Applicant: QUALCOMM Incorporated

Inventor： Kapil Bhattad ,  Xiaoxia Zhang ,  Jing Sun ,  Ananta Narayanan Thyagarajan

IPC: H04W72/04 ,  H04W74/00 ,  H04W16/14 ,  H04W74/08

Abstract: Wireless communications systems and methods related to scheduling and communicating in an uplink direction over a medium shared by multiple network operating entities are provided. A first wireless communication device transmits, to a second wireless communication device, a message indicating an uplink allocation in a transmission slot, the uplink allocation including an allocation size based on an allowable listen-before-talk (LBT) delay in the transmission slot. The first wireless communication device receives, from the second wireless communication device, an uplink communication signal in the transmission slot, the uplink communication signal including an uplink data portion based on the allocation size and a filler portion associated with an LBT delay in the transmission slot.

公开(公告)号：US10998995B2

公开(公告)日：2021-05-04

申请号：US16800757

申请日：2020-02-25

Applicant: QUALCOMM Incorporated

Inventor： Alberto Rico Alvarino ,  Peter Gaal ,  Kapil Bhattad

IPC: H04J11/00 ,  H04W72/08 ,  H04W28/04 ,  H04W74/08 ,  H04L1/06 ,  H04L5/00 ,  H04L25/02

Abstract: A base station (BS) may transmit, and a user equipment (UE) may receive, a physical channel, such as a narrowband physical downlink control channel (NPDCCH) or a narrowband physical downlink shared channel (NPDSCH). In an interference-limited scenario in a network, it may be desirable to perform additional processing to introduce interference randomization into the control channel to ensure that the UE can recover data of the control channel. Some types of UEs, such as legacy UEs, may not be capable of recovering the control channel when the additional processing is performed. In some aspects, the BS may identify a type of UE associated with a cell, and may transmit a physical channel processed using a processing scheme selected based at least in part on the type of UE associated with the cell.

公开(公告)号：US20210099980A1

公开(公告)日：2021-04-01

申请号：US17027337

申请日：2020-09-21

Applicant: QUALCOMM Incorporated

Inventor： Mostafa Khoshnevisan ,  Jing Sun ,  Xiaoxia Zhang ,  Kapil Bhattad

IPC: H04W72/04 ,  H04L5/00 ,  H04L1/08

Abstract: Methods, systems, and devices for wireless communications are described that facilitate feedback for transmissions or retransmissions, such as hybrid automatic repeat request (HARQ) acknowledgment/negative-acknowledgment (ACK/NACK) feedback reports. A UE may report feedback for regular downlink transmission and semi-persistent scheduling (SPS) transmissions in one or more group-based acknowledgment feedback reports, in which SPS transmissions are associated with a group for providing the feedback report and any retransmissions of the feedback report. Acknowledgment feedback reports may also indicate new data indicator values according to a predetermined value for SPS transmissions in one-shot feedback reports.

公开(公告)号：US20210092627A1

公开(公告)日：2021-03-25

申请号：US17024607

申请日：2020-09-17

Applicant: QUALCOMM Incorporated

Inventor： Andrei Dragos Radulescu ,  Jing Sun ,  Kapil Bhattad ,  Xiaoxia Zhang

IPC: H04W24/10 ,  H04W72/12 ,  H04L5/00 ,  H04W56/00 ,  H04L1/00 ,  H04W72/14

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) and base station may communicate in on a wireless channel of an unlicensed radio frequency spectrum band. The base station may transmit synchronization signal blocks (SSBs) in a discovery reference signal (DRS) slot. The base station may multiplex a channel state information (CSI) reference signal (CSI-RS). The base station may multiplex an aperiodic CSI-RS or a periodic CSI-RS with the SSBs in the DRS slot. For an aperiodic CSI-RS, the base station may separately trigger the CSI-RS measurement and CSI-RS reporting. For periodic CSI-RS, the base station may transmit an indication of whether the periodic CSI-RS is present.

公开(公告)号：US10924997B2

公开(公告)日：2021-02-16

申请号：US16739674

申请日：2020-01-10

Applicant: QUALCOMM Incorporated

Inventor： Kapil Bhattad ,  Mungal Singh Dhanda ,  Alberto Rico Alvarino ,  Hao Xu ,  Wanshi Chen ,  Xiao Feng Wang

IPC: H04W28/08 ,  H04W52/02 ,  H04W72/08 ,  H04W76/28 ,  H04L5/00 ,  H04W72/12 ,  H04W72/04 ,  H04W24/02 ,  H04W48/16 ,  H04W74/00

Abstract: Techniques described herein use a wakeup signal to indicate to a user equipment (UE) whether an upcoming control channel signal resource includes information relevant to the UE. In this way, the UE can wake up to perform complex control channel signal processing only when the control channel includes signals relevant to the UE, thereby conserving battery power and resources of the UE. Such techniques are particularly suited to MTC UEs, NB-IoT UEs, and/or the like, which may communicate with a network only occasionally, and which may be located in remote locations where changing or recharging a battery is difficult.

公开(公告)号：US20210045153A1

公开(公告)日：2021-02-11

申请号：US16912261

申请日：2020-06-25

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Ananta Narayanan Thyagarajan ,  Jing Sun ,  Kapil Bhattad

IPC: H04W74/08 ,  H04W16/14 ,  H04L5/00 ,  H04L1/16 ,  H04W24/08 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communications in unlicensed spectrum are described. In some wireless communications systems, a user equipment may identify a service parameter configured for the user equipment for a shared radio frequency channel, such as a subcarrier spacing or beam direction for a directional beam for communications with a base station. The base station may acquire a channel occupancy time for the shared radio frequency channel. The user equipment may monitor for and receive a control message for the channel occupancy time from the base station. The control message may include an indication of service associated with the service parameter and a remaining duration of the channel occupancy time. Based on the indications, the user equipment may adapt one or more receive parameters (e.g., a monitoring periodicity, monitoring time occasions, and whether to skip monitoring) for communicating with the base station during the channel occupancy time.

公开(公告)号：US20210021447A1

公开(公告)日：2021-01-21

申请号：US17060298

申请日：2020-10-01

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Xiaoxia Zhang ,  Kapil Bhattad ,  Tanumay Datta

IPC: H04L25/02 ,  H04L5/00 ,  H04W74/08 ,  H04L27/26

Abstract: Techniques and devices for wireless communications are described that provide for staggering sounding reference signal (SRS) transmissions in frequency across multiple orthogonal frequency division multiplexing (OFDM) symbols, which may allow multiple UEs to transmit SRS using a common listen-before-talk (LBT) gap for a LBT procedure. The techniques also provide for transmitting an SRS across multiple OFDM symbols using same frequency resources, and an orthogonal cover code (OCC) may be applied to the SRS transmission of each OFDM symbol, which may allow multiple UEs to transmit concurrent SRS using a common LBT gap.

公开(公告)号：US20210014890A1

公开(公告)日：2021-01-14

申请号：US16890969

申请日：2020-06-02

Applicant: QUALCOMM INCORPORATED

Inventor： Pravjyot Singh Deogun ,  Kapil Bhattad ,  Ozcan Ozturk ,  Jing Sun ,  Xiaoxia Zhang ,  Mostafa Khoshnevisan

IPC: H04W74/08 ,  H04W72/14 ,  H04L1/18 ,  H04W16/14

Abstract: Wireless communications systems and methods related to multi-grant scheduling are provided. A user equipment (UE) receives, from a base station (BS), an uplink (UL) scheduling grant indicating one or more transmission occasions. The UE performs a category 2 (CAT2) listen-before-talk (LBT) based on the one or more transmission occasions being within a channel occupancy time (COT) of the BS. The UE transmits one or more UL transmissions during the one or more transmissions occasions based on the CAT2 LBT.

公开(公告)号：US20200351758A1

公开(公告)日：2020-11-05

申请号：US16861197

申请日：2020-04-28

Applicant: QUALCOMM INCORPORATED

Inventor： Kapil Bhattad ,  Ananta Narayanan Thyagarajan ,  Xiaoxia Zhang ,  Jing Sun

IPC: H04W48/10 ,  H04W16/14 ,  H04W74/08

Abstract: Wireless communications systems and methods related to channel access for discovery reference signal (DRS) transmissions in a spectrum shared by multiple network operating entities are provided. A first wireless communication device identifies a plurality of allowable transmission starting locations within a DRS measurement time configuration (DMTC) window, where at least one of the plurality of allowable transmission starting locations is offset from boundaries of a plurality of transmission slots of the DMTC window. The plurality of allowable transmission starting locations is associated with an allowable number of category 2 (CAT2) listen-before-talks (LBTs) within the DMTC window and a duration of the DRS transmission. The first wireless communication device communicates, with a second wireless communication device, a DRS beginning at a first transmission starting location of the plurality of allowable transmission starting locations.