公开(公告)号：WO2021173331A1

公开(公告)日：2021-09-02

申请号：PCT/US2021/017022

申请日：2021-02-08

Applicant: QUALCOMM INCORPORATED

Inventor： YOO, Taesang ,  ZENG, Weiliang ,  BHUSHAN, Naga ,  MUKKAVILLI, Krishna Kiran ,  JI, Tingfang ,  WEI, Yongbin ,  BARGHI, Sanaz

IPC: H04B7/0417 ,  H04B7/06 ,  H04L25/02 ,  H04L1/00

Abstract: Various aspects of the present disclosure generally relate to neural network based channel state information (CSI) feedback. In some aspects, a device may obtain a CSI instance for a channel, determine a neural network model including a CSI encoder and a CSI decoder, and train the neural network model based at least in part on encoding the CSI instance into encoded CSI, decoding the encoded CSI into decoded CSI, and computing and minimizing a loss function by comparing the CSI instance and the decoded CSI. The device may obtain one or more encoder weights and one or more decoder weights based at least in part on training the neural network model. Numerous other aspects are provided.

公开(公告)号：WO2017214292A1

公开(公告)日：2017-12-14

申请号：PCT/US2017/036386

申请日：2017-06-07

Applicant: QUALCOMM INCORPORATED

Inventor： BARGHI, Sanaz ,  NAGHSHVAR, Mohammad ,  PATEL, Chirag Sureshbhai ,  SADEK, Ahmed Kamel ,  KADOUS, Tamer Adel

IPC: H04W16/04 ,  H04W72/04 ,  H04W74/08 ,  H04W76/04 ,  H04B17/345

CPC classification number: H04L47/2433 ,  H04B17/309 ,  H04B17/345 ,  H04L5/0048 ,  H04L29/06 ,  H04L47/2416 ,  H04W72/0446 ,  H04W74/002 ,  H04W74/006 ,  H04W74/0816

Abstract: Techniques for managing preamble transmission and processing on a shared communication medium are disclosed. An access point or an access terminal, for example, may generate a preamble for silencing communication on a communication medium with respect to an upcoming data transmission, configure the preamble to identify one or more target devices for the silencing, and transmit the preamble over the communication medium in advance of the data transmission. Conversely, the access point or the access terminal may receive a preamble (as a receiving device) over a communication medium, identify one or more target devices for silencing communication on the communication medium with respect to an upcoming data transmission based on the preamble, and selectively silence communication over the communication medium based on itself (as the receiving device) being among the one or more target devices.

Abstract translation: 公开了用于管理共享通信介质上的前导码传输和处理的技术。 接入点或接入终端例如可以生成用于使通信介质上的通信关于即将到来的数据传输静默的前导码，配置前导码以识别用于静默的一个或多个目标设备，并且通过 通信介质在数据传输之前。 相反，接入点或接入终端可以通过通信介质接收前导码（作为接收设备），识别用于基于前导码针对即将到来的数据传输沉默通信介质上的通信的一个或多个目标设备，以及 基于本身（作为接收设备）在一个或多个目标设备之中选择性地使通信介质上的通信无效。

公开(公告)号：WO2019160637A1

公开(公告)日：2019-08-22

申请号：PCT/US2019/013820

申请日：2019-01-16

Applicant: QUALCOMM INCORPORATED

Inventor： CHENDAMARAI KANNAN, Arumugam ,  CHANDE, Vinay ,  BARGHI, Sanaz ,  DAMNJANOVIC, Aleksandar

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

Abstract: Methods, systems, and devices for wireless communications are described. A wireless device may select a transmission beam sequence for a wireless device during a plurality of transmission slots. The transmission beam sequence may indicate a transmission beam that the wireless device will use for its transmissions during a corresponding transmission slot. The wireless device may transmit a broadcast control signal including an indication of the transmission beam sequence. The wireless device may perform wireless transmissions over the plurality of transmission slots according to the transmission beam sequence. Other wireless devices may use the transmission beam sequence to schedule their own transmissions during the plurality of transmission slots.

公开(公告)号：WO2015171257A1

公开(公告)日：2015-11-12

申请号：PCT/US2015/025351

申请日：2015-04-10

Applicant: QUALCOMM INCORPORATED

Inventor： LEE, Heechoon ,  HAN, Feng ,  BARGHI, Sanaz ,  SAMBHWANI, Sharad, Deepak

IPC: H04B7/04 ,  H04B7/06

CPC classification number: H04B7/0456 ,  H04B7/0413 ,  H04B7/0617 ,  H04B7/0619 ,  H04B7/063

Abstract: Aspects described herein relate to selecting a rank for wireless communications using multiple transmit antenna layers. A first effective throughput achievable using a first rank and based at least in part on a first block error rate (BLER) associated with the first rank can be estimated along with a second effective throughput achievable using a second rank and based at least in part on a second BLER associated with the second rank. The first rank or second rank is selected to be used for transmitting communications over multiple transmit antenna layers based at least in part on comparing the first effective throughput to the second effective throughput, and the selection can be indicated to a transmitting entity from which the communications over the multiple transmit antenna layers are received.

Abstract translation: 本文描述的方面涉及使用多个发射天线层选择用于无线通信的等级。 可以使用第一等级并且至少部分地基于与第一等级相关联的第一块错误率（BLER）可实现的第一有效吞吐量以及使用第二等级可实现的第二有效吞吐量以及至少部分地基于 与第二级相关联的第二BLER。 第一等级或第二等级被选择用于至少部分地基于将第一有效吞吐量与第二有效吞吐量进行比较来发送在多个发射天线层上的通信，并且可以向发射实体指示该选择，该发射实体从该通信 在多个发射天线层上接收。

公开(公告)号：WO2021050396A1

公开(公告)日：2021-03-18

申请号：PCT/US2020/049585

申请日：2020-09-05

Applicant: QUALCOMM INCORPORATED

Inventor： ZENG, Weiliang ,  BARGHI, Sanaz ,  MALLIK, Siddhartha ,  YOO, Taesang ,  XUE, Yisheng ,  ZHANG, Xiaoxia

IPC: H04L1/00 ,  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：WO2019067297A1

公开(公告)日：2019-04-04

申请号：PCT/US2018/051926

申请日：2018-09-20

Applicant: QUALCOMM INCORPORATED

Inventor： CHENDAMARAI KANNAN, Arumugam ,  SADEK, Ahmed Kamel ,  CHANDE, Vinay ,  BARGHI, Sanaz ,  KADOUS, Tamer

IPC: H04W74/00 ,  H04W74/08

Abstract: Methods, systems, and devices for wireless communications are described. A base station may perform a channel access procedure on a shared radio frequency spectrum band using a first beam configuration. The base station may transmit, based at least in part on successful completion of the channel access procedure, a reservation request message (RRQ) to a user equipment (UE) using a second beam configuration, the second beam configuration comprising a beam width that is equal to or narrower than a beam width of the first beam configuration. The base station may receive a reservation response message (RRS) from the UE in response to the RRQ, the RRS comprising a third beam configuration that is based at least in part on the second beam configuration.

公开(公告)号：WO2015171521A1

公开(公告)日：2015-11-12

申请号：PCT/US2015/029107

申请日：2015-05-04

Applicant: QUALCOMM INCORPORATED

Inventor： LEE, Heechoon ,  BARGHI, Sanaz ,  HAN, Feng ,  SAMBHWANI, Sharad Deepak

IPC: H04B7/04 ,  H04B7/06

CPC classification number: H04B7/0473 ,  H04B7/0465 ,  H04B7/0615 ,  H04B7/0639 ,  H04W52/06

Abstract: Aspects for balancing power output on the plurality of antennas for the transmission of a transport block are disclosed. In accordance with the present disclosure, a transmitter may balance the power output on a plurality of transmit antennas in a multiple-input multiple-output (MIMO) system by having a precoded data block bypass a virtual antenna mapping of the overhead channels (e.g., control channels). Additionally or alternatively, the transmitter may balance the power output on the plurality of transmit antennas by applying an inverse mapping parameter during the precoding process to the transport block to generate a plurality of inverse mapped precoded data blocks. In some examples, the inverse mapping parameter may be an inverse of the mapping parameter. Thus, in accordance with the present disclosure, precoding a transport block may include selecting a precoding weight for each of the plurality of antennas from an unrestricted precoding weight set.

Abstract translation: 公开了用于平衡用于传输块的传输的多个天线上的功率输出的方面。 根据本公开，发射机可以通过使预编码数据块绕过架空信道的虚拟天线映射来平衡多输入多输出（MIMO）系统中的多个发射天线上的功率输出（例如， 控制通道）。 附加地或替代地，发射机可以通过在预编码处理期间向传输块应用反映射参数来平衡多个发射天线上的功率输出，以生成多个逆映射预编码数据块。 在一些示例中，反映射参数可以是映射参数的逆。 因此，根据本公开，传输块的预编码可以包括从无限制的预编码权重集合中选择多个天线中的每一个的预编码权重。

公开(公告)号：WO2021173371A1

公开(公告)日：2021-09-02

申请号：PCT/US2021/017896

申请日：2021-02-12

Applicant: QUALCOMM INCORPORATED

Inventor： ZENG, Weiliang ,  YOO, Taesang ,  BARGHI, Sanaz ,  BHUSHAN, Naga ,  VITTHALADEVUNI, Pavan Kumar ,  MUKKAVILLI, Krishna Kiran ,  ZHANG, Xiaoxia ,  JI, Tingfang ,  WEI, Yongbin

IPC: H04L1/00 ,  H04L5/00 ,  H04B7/02

Abstract: Systems and methods facilitating feedback of robust channel state information (CSI), such as to provide full CSI feedback or otherwise providing CSI feedback, are described. CSI encoders and/or decoders used by network nodes may implement channel compression/reconstruction based upon neural-network (NN) training of collected channels. A structured payload having an interpretable payload portion and an uninterpretable payload portion may utilized with respect to CSI feedback. The channel compression provided according to some aspects of the disclosure supports feedback of robust CSI, in some instances including full CSI, as determined by a particular network node. Other aspects and features are also claimed and described.

公开(公告)号：WO2018140355A1

公开(公告)日：2018-08-02

申请号：PCT/US2018/014699

申请日：2018-01-22

Applicant: QUALCOMM INCORPORATED

Inventor： SUN, Jing ,  BARGHI, Sanaz ,  PATEL, Chirag Sureshbhai ,  NAGHSHVAR, Mohammad ,  KADOUS, Tamer Adel

IPC: H04W74/04 ,  H04W74/08 ,  H04B7/0408 ,  H04W74/02 ,  H04B7/06 ,  H04B7/08 ,  H04B7/04 ,  H04W74/00

Abstract: Methods, systems, and devices for wireless communication are described for monitoring interference level to selectively control usage of a contention-based protocol. In an example, a wireless device may transmit, while operating in a non-contention-based mode for a wireless link with a second wireless device, a first beamformed data transmission to the second wireless device over a shared channel. The wireless device may determine that an interference level condition is satisfied for the shared channel and transition from operating in the non-contention-based mode to operating in a contention-based mode for the wireless link based at least in part on the interference level condition being satisfied. The wireless device may perform a contention-based protocol, while operating in the contention-based mode for the wireless link with the second wireless device, prior to transmission of a second beamformed data transmission to the second wireless device over the shared channel.

公开(公告)号：WO2018064000A1

公开(公告)日：2018-04-05

申请号：PCT/US2017/053321

申请日：2017-09-25

Applicant: QUALCOMM INCORPORATED

Inventor： SUN, Jing ,  YOO, Taesang ,  ZHANG, Xiaoxia ,  BARGHI, Sanaz ,  MONTOJO, Juan

IPC: H04W74/08 ,  H04W16/14

Abstract: Aspects of the disclosure relate to wireless communication systems configured to share a shared spectrum with one or more other systems (e.g., other operator networks utilizing the same radio access technology, and/or other networks utilizing different radio access technologies). Coexistence between the different systems on the shared spectrum may be provided by utilizing a technology-neutral signature waveform such as a signature sequence. A device or system may monitor a shared spectrum channel for the signature waveform, and when detected, may determine whether the shared spectrum is available for that system, or busy as occupied by another system. When the shared spectrum channel is idle, the device or system may reserve the channel by transmitting the signature waveform. Other aspects, embodiments, and features are also claimed and described.

Abstract translation: 本公开的方面涉及被配置为与一个或多个其它系统（例如，利用相同无线电接入技术的其他运营商网络和/或利用不同无线电的其他网络共享频谱的无线通信系统 接入技术）。 共享频谱上的不同系统之间的共存可以通过利用诸如签名序列的技术中立签名波形来提供。 设备或系统可以监测签名波形的共享频谱信道，并且当检测到时，可以确定共享频谱是否可用于该系统，或者忙于被另一个系统占用。 当共享频谱信道空闲时，设备或系统可以通过发送签名波形来预留信道。 其他方面，实施例和特征也被要求和描述。