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：US10651961B2

公开(公告)日：2020-05-12

申请号：US16160949

申请日：2018-10-15

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Tao Luo ,  Yongbin Wei ,  Durga Prasad Malladi ,  Siddhartha Mallik ,  Xiaoxia Zhang ,  Hao Xu

IPC: H04W74/00 ,  H04W72/12 ,  H04W72/08 ,  H04J11/00

Abstract: Techniques are described for wireless communication. A first method includes receiving downlink control information for a first UE based at least in part on a group identifier associated with a NOMA group including the first UE and at least a second UE; and receiving a set of NOMA downlink transmissions at the first UE based at least in part on the downlink control information for the first UE. A second method includes receiving downlink control information for a first UE, the downlink control information for the first UE including an indication of at least a second UE; receiving downlink control information for the second UE based at least in part on the indication of at least the second UE; and receiving a set of NOMA downlink transmissions at the first UE based at least in part on the downlink control information for the first UE and the downlink control information for the second UE.

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：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.

公开(公告)号：US10575303B2

公开(公告)日：2020-02-25

申请号：US15209505

申请日：2016-07-13

Applicant: QUALCOMM Incorporated

Inventor： Alberto Rico Alvarino ,  Seyed Ali Akbar Fakoorian ,  Hao Xu

IPC: H04W72/04 ,  H04W4/70 ,  H04W88/08 ,  H04W88/02 ,  H04L5/00 ,  H04L5/14

Abstract: Aspects of the present disclosure provide techniques for wireless communications by a base station. An example method generally includes allocating uplink resources to one or more first type of user equipments (UEs) that communicate with the BS on a first frequency band that is narrower than a second frequency band used to communicate with a second type of UE, wherein the uplink resources may be allocated with a same or different symbol duration and same or different time granularity as uplink resources allocated to the second type of UE and with single subcarriers allocated to the first type of UEs, and receiving uplink transmissions from the first type of UE on the allocated resources.

公开(公告)号：US10568130B2

公开(公告)日：2020-02-18

申请号：US15707659

申请日：2017-09-18

Applicant: QUALCOMM Incorporated

Inventor： Renqiu Wang ,  Hung Ly ,  Haitong Sun ,  Hao Xu

IPC: H04W74/00 ,  H04L1/08 ,  H04L1/00 ,  H04W28/18 ,  H04W72/04 ,  H04W74/08 ,  H04L5/00

Abstract: A user equipment (UE) may perform a random access procedure to synchronize with a network for uplink and/or downlink communication. The UE may transmit a first type of random access transmission that includes transmitting a preamble or a second type of random access transmission that includes transmitting a preamble and a random access message. The second type may result in reduced delay but may have lesser SNR tolerance than the first type. In some aspects, the UE may determine whether to transmit the first type or the second type, and may transmit the first type or the second type in a random access channel portion of a slot. The random access channel portion of the slot may be occupied by portions of either the first type of random access transmission or the second type of random access transmission, thereby enabling flexible utilization of multiple types of random access procedure.

公开(公告)号：US10567205B2

公开(公告)日：2020-02-18

申请号：US15674428

申请日：2017-08-10

Applicant: QUALCOMM Incorporated

Inventor： Seyong Park ,  Sony Akkarakaran ,  Wei Zeng ,  Peter Gaal ,  Yi Huang ,  Renqiu Wang ,  Hao Xu ,  Tao Luo ,  Tingfang Ji

IPC: H04L27/26 ,  H04L5/00 ,  H04J11/00

Abstract: Methods, systems, and devices for wireless communications are described that support frequency and time domain multiplexing for low peak-to-average waveforms with multiple streams. A user equipment (UE) may identify sets of symbols associated with different streams (e.g., multiple single-carrier discrete Fourier transform (DFT)-spread waveforms), where each stream may be associated with a low peak-to-average power ratio (PAPR). In some cases, different waveforms may be mapped to subsets of frequency resources through frequency division multiplexing (FDM). The UE may further reduce the PAPR of the multiplexed waveforms by performing time division multiplexing (TDM) across the single-carrier streams, and sets of symbols that are not used by one waveform may be used by another waveform. Frequency domain phase ramps may be applied to align the multiplexed waveforms. Signals included in an uplink transmission according to these techniques may maintain properties similar to single-carrier waveforms, including a low PAPR.

公开(公告)号：US10560235B2

公开(公告)日：2020-02-11

申请号：US14927210

申请日：2015-10-29

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Hao Xu ,  Peter Gaal

IPC: H04L5/00 ,  H04L27/26

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may establish a connection with another wireless node, such as a base station or another UE. The connection may include a narrowband control region of a wideband system. The UE may identify a set of resources, which may include a set of subframes that have the same precoding or a set of resource blocks that have the same precoding, during which to monitor a demodulation reference signal (DM-RS) for decoding a control channel within the narrowband. The UE may then decode the control channel using the DM-RS or a cell-specific reference signal (CRS), or both DM-RS and CRS. The UE may exclude resources of the narrowband region that include a control region for broadband communications.

公开(公告)号：US10555304B2

公开(公告)日：2020-02-04

申请号：US15448931

申请日：2017-03-03

Applicant: QUALCOMM Incorporated

Inventor： Renqiu Wang ,  Hao Xu ,  Peter Gaal ,  Alberto Rico Alvarino ,  Xiao Feng Wang ,  Seyed Ali Akbar Fakoorian ,  Jing Lei

IPC: H04W72/04 ,  H04W4/06 ,  H04L29/08 ,  H04L27/26 ,  H04W72/00 ,  H04W72/14

Abstract: NB wireless communication involves numerous challenges. A limited frequency dimension may need to be shared by multiple users. At times, large data transmissions, including multiple TBs of data may be transmitted using NB communication, and it may be important that each TB be successfully received by the users. The apparatus may transmit data comprising a plurality of TBs in a narrow band communications system, including repeating a transmission of the plurality of TBs, using any of a number of repetition patterns. The apparatus may use error correction encoding across multiple TBs. The transmission may be a single cell transmission or a multi-cell transmission.