公开(公告)号：US20140112262A1

公开(公告)日：2014-04-24

申请号：US13863927

申请日：2013-04-16

Applicant: QUALCOMM INCORPORATED

Inventor： Siddhartha Mallik ,  Tao Luo ,  Aleksandar Damnjanovic

IPC: H04L5/00

CPC classification number: H04L1/0003 ,  H04L5/0073 ,  H04W72/042 ,  H04W72/0426 ,  H04W72/0446 ,  H04W72/048 ,  H04W72/082 ,  H04W72/12 ,  H04W72/1278 ,  H04W84/045

Abstract: Systems, method and devices utilized in wireless communication may include creating, scheduling and/or using a transmission having at least one quasi-ABS which includes at least one macro set corresponding to a designated sector of a plurality of sectors in a macro node. Such subframes may be formed and partitioned to provide for a partition which may be used by a range expansion resource, such as a pico node or user entity.

Abstract translation: 在无线通信中使用的系统，方法和设备可以包括创建，调度和/或使用具有至少一个准ABS的传输，所述准ABS包括与宏节点中的多个扇区的指定扇区相对应的至少一个宏集合。 可以形成和划分这样的子帧以提供可由范围扩展资源（例如微微节点或用户实体）使用的分区。

公开(公告)号：US12192947B2

公开(公告)日：2025-01-07

申请号：US16776871

申请日：2020-01-30

Applicant: QUALCOMM Incorporated

Inventor： Lorenzo Ferrari ,  Taesang Yoo ,  Siddhartha Mallik

IPC: H04W64/00 ,  G01S5/02 ,  G01S19/46 ,  H04B7/02 ,  H04B17/27 ,  H04W84/12

Abstract: Position determination of a user equipment (UE) is supported using channel measurements obtained for Wireless Access Points (WAPs), wherein the channel measurements are for Line of Sight (LOS) and Non-LOS (NLOS) signals. Based on WAP almanac information and the channel measurements, channel parameters indicative of positions of signal sources relative to a first position of a UE may be determined. Using the first position of the UE and an association of the signal sources with corresponding channel parameters, a second position of the UE may be determined. The position of the UE may be a probability density function. Additionally, position information for signal sources may be determined, such as a probability density function, as well as signal blockage probability and an antenna geometry and the WAP almanac information may be updated accordingly.

公开(公告)号：US11412038B2

公开(公告)日：2022-08-09

申请号：US15782355

申请日：2017-10-12

Applicant: QUALCOMM Incorporated

Inventor： Siddhartha Mallik ,  Renqiu Wang ,  Ravi Palanki ,  Naga Bhushan

IPC: G06F16/438 ,  H04L67/1061 ,  H04W8/00 ,  H04W76/14 ,  H04W84/18

Abstract: Techniques for performing network-assisted peer discovery to enable peer-to-peer (P2P) communication are described. In one design, a device registers with a network entity (e.g., a directory agent) so that the presence of the device and possibly other information about the device can be made known to the network entity. The network entity collects similar information from other devices. The device sends a request to the network entity, e.g., during or after registration. The request includes information used to match the device with other devices, e.g., information about service(s) provided by the device and/or service(s) requested by the device. The directory agent matches requests received from all devices, determines a match between the device and at least one other device, and sends a notification to perform peer discovery. The device performs peer discovery in response to receiving the notification from the network entity.

公开(公告)号：US11153179B2

公开(公告)日：2021-10-19

申请号：US16565364

申请日：2019-09-09

Applicant: QUALCOMM incorporated

Inventor： Weiliang Zeng ,  Sanaz Barghi ,  Siddhartha Mallik ,  Taesang Yoo ,  Yisheng Xue ,  Xiaoxia Zhang

IPC: H04L12/24 ,  G06N3/04 ,  H04L1/00 ,  H04L5/00 ,  H04L25/02 ,  H04L27/26 ,  H04L12/26 ,  H04W72/08 ,  H04L1/20

Abstract: Methods, systems, and devices for wireless communications are described, and relate to a base station to communicating with a user equipment (UE) over a channel. A first device (for example, the base station or the UE) may use a trained neural network to estimate one or more link performance metrics associated with the channel. Predicting the link level performance may include determining one or more neural network weights associated with one or more input parameters associated with the channel to estimate the one or more link performance metrics. The first device may report feedback to the second device based on the estimated link performance metrics. Based on the feedback, the second device may adapt the link by adjusting channel parameters to improve the reliability or efficacy of later transmissions.

公开(公告)号：US11102815B2

公开(公告)日：2021-08-24

申请号：US16141616

申请日：2018-09-25

Applicant: QUALCOMM Incorporated

Inventor： Yisheng Xue ,  Xiaoxia Zhang ,  Siddhartha Mallik ,  Aleksandar Damnjanovic

IPC: H04W74/08 ,  H04B7/0413 ,  H04B7/06 ,  H04W16/14 ,  H04W72/04 ,  H04L5/00

Abstract: Improvements to asynchronous spatial listen before talk (LBT) procedures are disclosed. In a shared spectrum network spatial LBT procedures are used for directionally targeting the channel reservation process. Prior to transmitting channel reservation signaling, the transmitter and receiver determine an effective interference considering available multiple input, multiple output (MIMO) configuration information. When the effective interference exceeds a predefined threshold, the node may without transmission of its channel reservation signal. Otherwise, when the effective interference remains within the threshold, each node's transmitted channel reservation signal may also identify at least a beamforming matrix either as payload or used to precede the node's channel reservation signal.

公开(公告)号：US10834757B2

公开(公告)日：2020-11-10

申请号：US15677692

申请日：2017-08-15

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Taesang Yoo ,  Xiaoxia Zhang ,  Siddhartha Mallik

IPC: H04W74/08 ,  H04W28/20 ,  H04W28/26 ,  H04W76/11 ,  H04L12/26 ,  H04W24/02

Abstract: Aspects of the disclosure relate to reserving resources in wireless communication systems, such as those employing listen before talk (LBT). The disclosed methods and apparatus employ a channel reservation preamble used in a sequence of burst or data packet transmissions. The preamble including a channel reservation indication is included in a first data packet transmitted from a first network node. The channel reservation indication is configured to indicate a transmission time reservation of channel resources covering the data packet containing the preamble, a second data packet to be received from a second network node responsive to the first data packet, and at least a portion of a third data packet transmitted from the first network node subsequent to the transmission of the second data packet. In this manner, over-reservation of channel resources is mitigated. Other aspects, embodiments, and features are also claimed and described.

公开(公告)号：US10827488B2

公开(公告)日：2020-11-03

申请号：US16155750

申请日：2018-10-09

Applicant: QUALCOMM Incorporated

Inventor： Siddhartha Mallik ,  Taesang Yoo ,  Jelena Damnjanovic ,  Aleksandar Damnjanovic ,  Arumugam Chendamarai Kannan ,  Yongbin Wei ,  Durga Prasad Malladi

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

Abstract: Various aspects described herein relate to communicating using dynamic uplink and downlink transmission time interval (TTI) switching in a wireless network. A notification can be received from a network entity of switching a configurable TTI from downlink communications to uplink communications. The configurable TTI can be one of a plurality of TTIs in a frame structure that allows dynamic switching of configurable TTIs between downlink and uplink communications within a frame. Additionally, uplink communications can be transmitted to the network entity during the configurable TTI based at least in part on the notification.

公开(公告)号：US10820316B2

公开(公告)日：2020-10-27

申请号：US15802043

申请日：2017-11-02

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Jing Sun ,  Taesang Yoo ,  Siddhartha Mallik ,  Juan Montojo

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

Abstract: Multiple base stations, which may be controlled by different network operators, share a transmission medium to serve multiple user equipment (UE). A first base station determines that the shared communication medium is free. The first base station transmits, during a first medium access slot on the shared communication medium, a pre-grant for a first UE associated with the first base station. The first UE transmits a response message during the first medium access slot. Optionally, a second base station may join the transmission by transmitting a pre-grant to a second UE during a subsequent medium access slot.

公开(公告)号：US20200322941A1

公开(公告)日：2020-10-08

申请号：US16905279

申请日：2020-06-18

Applicant: QUALCOMM Incorporated

Inventor： Siddhartha Mallik ,  Jelena Damnjanovic ,  Taesang Yoo

IPC: H04W72/04 ,  H04L1/18

Abstract: Methods, systems, and devices are described for wireless communication. A transmitting device may send a signal including multiple transport blocks corresponding to multiple simultaneous hybrid automatic repeat request (HARQ) processes. Additional control information may be used to support the multiple simultaneous HARQ processes. For instance, the additional control information may indicate the number of available HARQ processes, an activity state for each HARQ process (e.g., active new data, active retransmission, or inactive), and the redundancy versions of each HARQ process. In some cases, the additional control information may be included in a downlink grant. A receiving device may respond with an acknowledgement or negative acknowledgment (ACK/NACK) for each of the transport blocks. The transmitting device may identify a retransmission status for each HARQ process based on the ACK/NACKs, and transmit new redundancy versions (or new data) to the receiving device.

公开(公告)号：US10728928B2

公开(公告)日：2020-07-28

申请号：US16129473

申请日：2018-09-12

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Taesang Yoo ,  Siddhartha Mallik ,  Aleksandar Damnjanovic ,  Tamer Kadous

IPC: H04W4/00 ,  H04W74/08 ,  H04W72/04

Abstract: Wireless communications systems and methods related to performing random backoff over multiple spatial dimensions in spatial listen-before-talk (LBT) procedures are provided. A first wireless communication device determines a first backoff counter for contending for a transmission opportunity (TXOP) in a communication medium over a first spatial subspace. The first wireless communication device detects a transmission in the TXOP within the first spatial subspace. The first wireless communication device determines a second backoff counter for contending for the TXOP over a second spatial subspace that is different from the first spatial subspace based on the detecting. The second spatial subspace is part of the first spatial subspace and the detected transmission is in a different spatial subspace than the second spatial subspace.