公开(公告)号：US20200186309A1

公开(公告)日：2020-06-11

申请号：US16789191

申请日：2020-02-12

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Madhavan Srinivasan Vajapeyam ,  Wanshi Chen ,  Peter Gaal ,  Tao Luo ,  Durga Prasad Malladi ,  Yongbin Wei

IPC: H04L5/00 ,  H04W76/12 ,  H04W74/00 ,  H04W72/08 ,  H04W72/04 ,  H04W56/00 ,  H04W24/08 ,  H04W76/27

Abstract: Techniques are described for wireless communication. A first method may include receiving at a user equipment (UE) over an unlicensed radio frequency spectrum band an indication of a time window associated with a transmission of a synchronization signal, and monitoring the unlicensed radio frequency spectrum band during the time window to receive a synchronization signal from a base station. A second method may include transmitting an indication of a time window associated with a transmission of a synchronization signal; performing a plurality of clear channel assessments (CCAs) on an unlicensed radio frequency spectrum band during the time window; and transmitting the synchronization signal over the unlicensed radio frequency spectrum band at a transmission time during the time window. The transmission time may be based at least in part on a result of at least one of the CCAs.

公开(公告)号：US10681676B2

公开(公告)日：2020-06-09

申请号：US15052471

申请日：2016-02-24

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Hao Xu ,  Peter Gaal

IPC: H04W72/04 ,  H04W4/70 ,  H04L5/00

Abstract: Certain aspects of the present disclosure generally relate to wireless communications, and more specifically to managing narrowband regions of system bandwidths for devices with limited communications resources, such as machine type communication(s) (MTC) devices and enhanced MTC (eMTC) devices. An example method generally includes determining a set of downlink (DL) narrowband regions partitioned from a DL system bandwidth, determining a set of uplink (UL) narrowband regions partitioned from an UL system bandwidth, determining a mapping between the set of DL narrowband regions and the set of UL narrowband regions, and communicating with at least a base station (BS) using at least one of the mapped narrowband regions.

公开(公告)号：US10674453B2

公开(公告)日：2020-06-02

申请号：US15643852

申请日：2017-07-07

Applicant: QUALCOMM Incorporated

Inventor： Hao Xu ,  Peter Gaal ,  Wanshi Chen ,  Stefan Geirhofer ,  Madhavan Srinivasan Vajapeyam

IPC: H04W52/14 ,  H04W52/24 ,  H04L5/00 ,  H04W52/28 ,  H04W52/54 ,  H04W52/08 ,  H04W52/10 ,  H04W52/36 ,  H04W52/50 ,  H04W52/32 ,  H04W52/46 ,  H04B7/024 ,  H04W74/08

Abstract: Techniques for performing path loss (PL) compensation in coordinated multipoint (CoMP) systems are provided. A method for wireless communications by a user equipment (UE) is provided. The method generally includes selecting, from a plurality of transmission points involved in uplink (UL) coordinated multipoint (CoMP) operations with the UE, a transmission point to associate with for path loss (PL) compensation, and adjusting power of one or more transmissions based on path loss measured based on the selected transmission point.

公开(公告)号：US10673601B2

公开(公告)日：2020-06-02

申请号：US16042581

申请日：2018-07-23

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Heechoon Lee ,  Peter Gaal ,  Juan Montojo ,  Tingfang Ji

IPC: H04L5/00 ,  H04L1/16 ,  H04L1/18 ,  H04W8/22 ,  H04W28/20 ,  H04W72/04

Abstract: Certain aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine a limit on a number of concurrently active bandwidth parts, wherein the limit applies per component carrier used by the UE or across component carriers used by the UE. The UE may communicate using one or more bandwidth parts on one or more component carriers used by the UE based at least in part on the limit, wherein at least one bandwidth part of the one or more bandwidth parts is less than a full bandwidth that the UE is capable of using. Numerous other aspects are provided.

公开(公告)号：US10660074B2

公开(公告)日：2020-05-19

申请号：US15955323

申请日：2018-04-17

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Peter Gaal ,  Shimman Arvind Patel ,  Aleksandar Damnjanovic

IPC: H04W72/04 ,  H04L5/00 ,  H04L27/26 ,  H04W72/14 ,  H04L1/00 ,  H04W76/27 ,  H04L1/18 ,  H04L25/02

Abstract: Various aspects described herein relate to communicating in a wireless network. A resource grant comprising an indicator of whether to transmit a demodulation reference signal (RS) for an uplink control channel or an uplink data channel can be received from a network entity. It can be determined whether to transmit the RS in at least one transmission time interval (TTI) based at least in part on the indicator.

公开(公告)号：US20200154489A1

公开(公告)日：2020-05-14

申请号：US16680426

申请日：2019-11-11

Applicant: QUALCOMM Incorporated

Inventor： Yan Zhou ,  Makesh Pravin John Wilson ,  Tao Luo ,  Wanshi Chen

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

Abstract: Methods, systems, and devices for wireless communication are described. Generally, the described techniques provide for efficiently identifying spatial parameters for receiving control information in an initial coreset. In one example, a user equipment (UE) may receive a TCI state indicating reference signals quasi co-located with a control information transmission in a coreset, and the UE may also identify a quasi co-location (QCL) assumption in a random-access procedure indicating that a synchronization signal block (SSB) is quasi co-located with the control information transmission in the coreset. In this example, the UE may identify spatial parameters for monitoring the coreset for the control information transmission in accordance with the TCI state or the QCL assumption based on the timing of the indicated TCI state and the QCL assumption.

公开(公告)号：US10609726B2

公开(公告)日：2020-03-31

申请号：US15925683

申请日：2018-03-19

Applicant: QUALCOMM Incorporated

Inventor： Seyedkianoush Hosseini ,  Wanshi Chen ,  Peter Gaal ,  Alberto Rico Alvarino ,  Hao Xu ,  Jing Sun ,  Shimman Arvind Patel

IPC: H04W72/12 ,  H04W76/11 ,  H04L5/00 ,  H04L1/08 ,  H04L1/18 ,  H04L1/16 ,  H04L1/00 ,  H04W76/27 ,  H04W72/04 ,  H04L5/14

Abstract: Methods, systems, and devices for wireless communication are described. Wireless communications systems as described herein may be configured to support several service types with different latency, reliability, or throughput rates or standards. One such service type may be referred to as ultra-reliable, low-latency communications (URLLC). Enhancements to improve URLLC performance in coexistence with and as a complement to legacy service types, such as LTE are described. These include, for example, enhanced timing resource allocations, enhanced transmission repetition schemes, enhanced feedback mechanisms, or a combination of these features to achieve certain reliability and latency targets.

公开(公告)号：US10602489B2

公开(公告)日：2020-03-24

申请号：US15439613

申请日：2017-02-22

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Wanshi Chen ,  Shimman Arvind Patel

IPC: H04W72/04 ,  H04L5/00 ,  H04W72/14 ,  H04W48/12

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may receive a resource allocation associated with a low latency time interval (TTI). The low latency TTI may be a two-symbol TTI. The UE may transmit, responsive to the resource allocation, a two-symbol TTI that includes a demodulation reference signal (DM-RS) symbol and a data symbol. In some cases, the two-symbol TTI may precede the transmission of another two-symbol TTI from the same UE that includes data and excludes DM-RS. In some cases, the two-symbol TTI includes DM-RS from another UE. In such cases, data from the other UE may be transmitted in a subsequent two-symbol TTI.

公开(公告)号：US10594532B2

公开(公告)日：2020-03-17

申请号：US16228168

申请日：2018-12-20

Applicant: QUALCOMM Incorporated

Inventor： Renqiu Wang ,  Hao Xu ,  Jing Jiang ,  Yi Huang ,  Wei Zeng ,  Wanshi Chen ,  Tingfang Ji

IPC: H04L27/26 ,  H04B7/0404 ,  H04B7/06 ,  H04B7/0413 ,  H04B7/0417 ,  H04B7/0456 ,  H04J13/12

Abstract: A configurable new radio (NR) uplink (UL) transmission may use transmit diversity. A user equipment (UE) may identify an uplink transmission of at least one stream as using one of cyclic prefix orthogonal frequency division multiplexing or discrete Fourier transform spread orthogonal frequency division multiplexing. The UE may apply a precoding matrix to the at least one identified stream. The precoding matrix changes over time. The precoding matrix may change based on closed loop feedback, a precoding cycling pattern, and/or a code division multiplexing group. The UE may transmit the at least one identified stream from multiple antennas according to the applied precoding matrix.

公开(公告)号：US10588141B2

公开(公告)日：2020-03-10

申请号：US15633626

申请日：2017-06-26

Applicant: QUALCOMM Incorporated

Inventor： Alberto Rico Alvarino ,  Wanshi Chen ,  Hao Xu ,  Peter Gaal ,  Srinivas Yerramalli ,  Jing Sun

IPC: H04W72/12 ,  H04L5/00 ,  H04L12/28 ,  H04L12/54 ,  H04L29/06 ,  H04W28/02 ,  H04L5/14

Abstract: A user equipment (UE) may transmit a sounding reference signal (SRS) on a component carrier (CC) that is otherwise configured for downlink communications. Due to a carrier aggregation configuration or UE capability, the UE may need to retune certain components to transmit on the CC. If the SRS transmission, including the retuning time, collides with another transmission (e.g., in uplink or downlink) the UE may drop the SRS, drop the other transmission, or puncture the other transmission to facilitate the SRS transmission. The determination about a collision may depend on the retuning time, channel, or type of control information in the other transmission. In some cases, a UE may drop the other transmission if transmitting the SRS would prevent the UE from transmitting a demodulation reference signal, hybrid automatic repeat request (HARQ) feedback. In some cases, the determination may be based upon a prioritization and may also depend on a subsequent subframe.