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：US11483107B2

公开(公告)日：2022-10-25

申请号：US16467872

申请日：2018-01-06

Applicant: QUALCOMM Incorporated

Inventor： Yu Zhang ,  Chao Wei ,  Hao Xu ,  Wanshi Chen ,  Wei Zeng

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

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for transmitting sounding reference signals (SRS) in communications systems operating according to new radio (NR) technologies. An exemplary method that a user equipment (UE) may perform includes determining whether to transmit a sounding reference signal (SRS) using a discrete Fourier transform (DFT) spread orthogonal frequency domain multiplexing (DFT-S-OFDM) waveform or a cyclic prefix orthogonal frequency domain multiplexing (CP-OFDM) waveform, and transmitting the SRS using the determined waveform.

公开(公告)号：US11470598B2

公开(公告)日：2022-10-11

申请号：US17044709

申请日：2019-04-02

Applicant: QUALCOMM Incorporated

Inventor： Changlong Xu ,  Chao Wei ,  Liangming Wu ,  Peng Cheng ,  Kai Chen ,  Hao Xu ,  Tingfang Ji

IPC: H04W4/00 ,  H04W72/04 ,  H04L1/00

Abstract: Aspects of the disclosure relate to wireless communication. In some aspects, a user equipment (UE) may receive an indicator, in a physical downlink control channel (PDCCH) payload, that indicates whether the PDCCH payload includes data or downlink control information (DCI) for obtaining the data, wherein the indicator is an initial state of a cyclic redundancy check that includes a predefined sequence of bits; and obtain at least one of the data or the DCI based at least in part on the indicator. Numerous other aspects are provided.

公开(公告)号：US11445489B2

公开(公告)日：2022-09-13

申请号：US16772656

申请日：2018-11-14

Applicant: Qualcomm Incorporated

Inventor： Changlong Xu ,  Kai Chen ,  Hao Xu ,  Jing Jiang ,  Jing Sun

IPC: H04W72/04 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communications are described that provide for a location indicator transmission that may indicate a location of control channel resources that are to be monitored by a user equipment (UE) for control channel transmissions. A UE may receive the location indicator, and monitor the indicated control channel resources to receive downlink control information with an allocation of shared channel resources for the UE. The location indicator may include one or more parameters that allow a UE to receive the control channel transmissions according to a single decoding hypothesis. The location indicator may include one or more of a valid period of the location of the control channel transmissions, an interval at which control channel transmissions may be transmitted, an aggregation level used for the control channel transmissions, an index that identifies a first control channel element of the control channel transmissions, or combinations thereof.

公开(公告)号：US11432176B2

公开(公告)日：2022-08-30

申请号：US16638213

申请日：2018-08-10

Applicant: Qualcomm Incorporated

Inventor： Chenxi Hao ,  Yu Zhang ,  Liangming Wu ,  Chao Wei ,  Wanshi Chen ,  Hao Xu

IPC: H04W24/10 ,  H04B7/06 ,  H04L5/00

Abstract: Some wireless communication networks may improve communication reliability and/or throughput using multiple-input, multiple-output (MIMO) schemes. MIMO operation may in turn be supported by the use of channel state information reference signals (CSI-RS), which may allow communicating devices to estimate and leverage multipath channel conditions. However, the signaling used to support such communications may consume significant resources. In accordance with the described techniques, a user equipment (UE) may identify non-zero-power beams based on received CSI-RS. The non-zero-power beams may contribute to the final precoding vector. Rather than transmitting beam coefficients relating to zero-power beams, the UE may instead indicate a presence of these zero-power beams to the base station (e.g., by indicating a number of non-zero-power beams). Such techniques may reduce overhead of the communications or otherwise benefit the system.

公开(公告)号：US11411678B2

公开(公告)日：2022-08-09

申请号：US17271746

申请日：2019-10-03

Applicant: Qualcomm Incorporated

Inventor： Kai Chen ,  Changlong Xu ,  Liangming Wu ,  Jian Li ,  Hao Xu

IPC: H04L1/00 ,  H03M13/13 ,  H03M13/00 ,  H04L1/18

Abstract: Wireless devices may use polar codes for encoding transmissions and may support combining transmissions to improve decoding reliability (e.g., by achieving chase combining and incremental redundancy (IR) gains). For example, an encoding device may puncture a set of mother code bits using different puncturing patterns to obtain different redundancy versions for a first transmission and a re-transmission. Each puncturing pattern may correspond to an equivalent decoding performance. In some cases, to obtain equivalent puncture sets, the encoding device may perform punctured index manipulation procedures on an initial puncturing pattern. A punctured index manipulation procedure may involve switching a binary state for a binary bit at a same binary bit index for each puncture index in a puncturing pattern. A device may receive the transmissions generated using the equivalent puncture sets and may combine the information for improved decoding reliability.

公开(公告)号：US11381367B2

公开(公告)日：2022-07-05

申请号：US16522457

申请日：2019-07-25

Applicant: QUALCOMM Incorporated

Inventor： Chong Li ,  Junyi Li ,  Hao Xu ,  Jing Jiang

IPC: H04L5/00 ,  H04L1/18 ,  H04B7/06 ,  H04W72/04

Abstract: An apparatus may configure x subframes with a subslot configuration that includes y subslots, y being greater than x. In an aspect, each subslot of the y subslots may include a first portion having one or more symbols for carrying at least one of data or control information, a second portion having a gap, and a third portion for carrying ACK/NACK information associated with the first portion. In an aspect, the second portion may be between the first portion and the third portion. In an aspect, the second portion and the third portion may include at most one symbol. The apparatus may send information indicating the subslot configuration to at least one neighboring base station. The apparatus may communicate content with a user equipment (UE) during at least one of the y subslots.

公开(公告)号：US11343839B2

公开(公告)日：2022-05-24

申请号：US16710535

申请日：2019-12-11

Applicant: QUALCOMM Incorporated

Inventor： Renqiu Wang ,  Hao Xu ,  Wanshi Chen ,  Yi Huang ,  Peter Gaal ,  Tingfang Ji

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

Abstract: Wireless communication devices, such as a scheduled entity, are adapted to facilitate uplink transmissions on multiple physical uplink control channels (PUCCHs) of a regular burst period. According to one example, a scheduled entity may obtain a payload for an uplink transmission on a PUCCH. The scheduled entity may subsequently send the uplink transmission utilizing two or more physical uplink control channels (PUCCH) of a regular burst period, where each PUCCH is associated with a different frequency band of the regular burst period. According to one example, a scheduling entity may receive an uplink transmission, where the uplink transmission utilizes a first PUCCH of a regular burst period, and at least a second PUCCH of the regular burst period, each of the first and second PUCCHs being associated with respectively different frequency bands of the regular burst period. Other aspects, embodiments, and features are also included.

公开(公告)号：US11336344B2

公开(公告)日：2022-05-17

申请号：US17092764

申请日：2020-11-09

Applicant: QUALCOMM Incorporated

Inventor： Chao Wei ,  Wanshi Chen ,  Peter Gaal ,  Hao Xu ,  Neng Wang ,  Xiaohui Liu ,  Jilei Hou

IPC: H04B7/06 ,  H04B7/0456 ,  H04L5/00 ,  H04L27/26

Abstract: Design of precoding and feedback for user equipment (UE)-specific reference signals (UE-RS)-based open-loop and semi-open-loop multiple input, multiple output (MIMO) systems is discussed. Aspects of the present disclosure provide for sub-resource block (RB) random precoding that allows for greater diversity gain in a lower bandwidth. In addition, the recoding may be performed using resource element (RE)-level layer shifting that provides for a number of precoders to be assigned to a number of layers for every such continuous subcarrier. As such, two codewords may experience the same effective channel quality with channel quality indicators (CQI) being averaged across all of the layers.

公开(公告)号：US11310740B2

公开(公告)日：2022-04-19

申请号：US15831251

申请日：2017-12-04

Applicant: QUALCOMM Incorporated

Inventor： Peter Pui Lok Ang ,  Amir Aminzadeh Gohari ,  Alexei Yurievitch Gorokhov ,  Raghu Narayan Challa ,  Tingfang Ji ,  Krishna Kiran Mukkavilli ,  Ravi Agarwal ,  Joseph Binamira Soriaga ,  Hao Xu

IPC: H04W52/02 ,  H04W76/28 ,  H04W72/04 ,  H04W88/02 ,  H04W88/08

Abstract: Systems and method of embodiments herein operate to conserve battery power of user equipment (UE). Embodiments determine whether waking up a UE receiver would be beneficial and based on the determination, the UE either wakes up the receiver or returns to sleep. Embodiments determine whether to wake up the receiver by performing pre-wake up (PWU) operation which either wakes up the receiver in a low power mode or wakes up the UE's wake up receiver. It may be determined whether a wake up (WU) signal is received during a PWU stage. If a WU signal is received during the PWU stage the UE may perform a full wake up of the receiver. If a WU signal is not received the UE may return to idle mode. In embodiments, WU (Wake Up) DRX cycles are supplemented with a Full DRX (Discontinuous Reception) cycle.