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    REQUEST-TO-SEND/CLEAR-TO-SEND ENABLED POWER SAVING AND OFF-CHANNEL OPERATIONS
    42.
    发明申请
    REQUEST-TO-SEND/CLEAR-TO-SEND ENABLED POWER SAVING AND OFF-CHANNEL OPERATIONS 审中-公开

    公开(公告)号：US20170273017A1

    公开(公告)日：2017-09-21

    申请号：US15452660

    申请日：2017-03-07

    Applicant: QUALCOMM Incorporated

    Inventor： Ravi Gidvani ,  Sandip HomChaudhuri ,  Vikram Phogat

    IPC: H04W52/02 ,  H04W24/10

    CPC classification number: H04W52/0206 ,  H04W24/10 ,  Y02D70/142 ,  Y02D70/22

    Abstract: Methods, systems, and devices for wireless communication are described. An access point (AP) may direct stations (STAs) to use a request-to-send (RTS)/clear-to-send (CTS) mode so the AP may perform power savings and off-channel operations without disrupting the communications of nearby devices. In some cases, the AP may use traffic conditions to identify a power save period and subsequently transmit an indication of an RTS/CTS mode to multiple STAs. In one example, the AP may power down at least one radio frequency (RF) chain and enter into a sleep mode. Additionally or alternatively, during the power save period the AP may receive an RTS from a STA and power up additional radio chains for MIMO communication. In some cases, the AP may identify an off-channel operations period based on traffic conditions and perform the off-channel operations after indicating the RTS/CTS mode to a set of STAs.

    Shared antenna loss detection and recovery
    43.
    发明授权
    Shared antenna loss detection and recovery 有权

    公开(公告)号：US09628166B2

    公开(公告)日：2017-04-18

    申请号：US14678753

    申请日：2015-04-03

    Applicant: QUALCOMM Incorporated

    Inventor： Sandip HomChaudhuri ,  Gangadhar Burra ,  Alireza Raissinia

    IPC: H04B7/08 ,  H04W24/04 ,  H04B7/00 ,  H04L1/00

    CPC classification number: H04B7/0857 ,  H04B1/18 ,  H04B7/0825 ,  H04L1/00 ,  H04W24/04

    Abstract: Methods, systems, and devices are described for wireless communication at a wireless communications device. The device may use several antennas to receive a signal, one of which may be shared between two radios. During signal reception, a radio may detect when the shared antenna is abruptly taken over by the other radio. The radio may detect the loss of the antenna by measuring an impedance mismatch. Alternatively, the radio may reference an antenna switch control that is used to facilitate the switch. After detection, the radio may recover from the antenna loss by adjusting signal processing. For example, the radio may modify a maximal ratio combining (MRC) operation. In certain examples, the device may disregard the signal version from the shared antenna in the computation of MRC weights. In some cases, the device may interrupt an MRC weight computation and use MRC weights from a previous calculation.

    TECHNIQUES FOR MANAGING SIFS-BURSTING IN WLAN SYSTEM
    44.
    发明申请
    TECHNIQUES FOR MANAGING SIFS-BURSTING IN WLAN SYSTEM 审中-公开
    用于管理WLAN系统中的SIFS-BURSTING的技术

    公开(公告)号：US20160345270A1

    公开(公告)日：2016-11-24

    申请号：US14715230

    申请日：2015-05-18

    Applicant: QUALCOMM Incorporated

    Inventor： Sandip HomChaudhuri ,  Sumeet Kumar ,  James Simon Cho

    IPC: H04W52/08 ,  H04L5/00 ,  H04L29/06

    CPC classification number: H04W52/08 ,  H04L1/0001 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/1671 ,  H04L5/0055 ,  H04L69/22 ,  H04W52/362 ,  H04W52/54

    Abstract: Methods and apparatuses for providing closed-loop power control during a short inter-frame space (SIFS) burst are described herein. A method includes receiving feedback associated with transmit power used to transmit a first data packet in a SIFS burst. The method also includes adjusting at least the transmit power, or a modulation and coding scheme (MCS), or a combination thereof, used to transmit a second data packet of the SIFS burst based at least in part on the received feedback.

    Abstract translation: 本文描述了在短帧间空间（SIFS）突发期间提供闭环功率控制的方法和装置。 一种方法包括接收与用于在SIFS突发中发送第一数据分组的发射功率相关联的反馈。 该方法还包括至少部分地基于所接收的反馈来调整至少用于发送SIFS突发的第二数据分组的发射功率或调制和编码方案（MCS）或其组合。

    Time-frequency scheduling to improve multi-radio coexistence
    47.
    发明授权
    Time-frequency scheduling to improve multi-radio coexistence 有权
    时频调度来改善多无线电共存

    公开(公告)号：US09131522B2

    公开(公告)日：2015-09-08

    申请号：US13891148

    申请日：2013-05-09

    Applicant: QUALCOMM Incorporated

    Inventor： Firouz Behnamfar ,  Sandip HomChaudhuri ,  Paul Husted ,  Alireza Raissinia ,  Qinfang Sun

    IPC: H04W4/00 ,  H04W72/12 ,  H04W16/14 ,  H04W72/04

    CPC classification number: H04W72/1257 ,  H04W16/14 ,  H04W72/042 ,  H04W72/1215 ,  H04W72/1289

    Abstract: A user equipment (UE) uses information regarding dynamic resource allocation in a mobile wireless service (MWS) radio access technology (RAT) to improve MWS and wireless connectivity network (WCN) RAT coexistence. The UE may receive an indication of time and frequency resources of future activity of the MWS RAT. The UE may schedule communications of the WCN RAT based at least in part on the indication of the time and frequency resources of the future activity.

    Abstract translation: 用户设备（UE）使用关于移动无线服务（MWS）无线电接入技术（RAT）中的动态资源分配的信息来改进MWS和无线连接网络（WCN）RAT共存。 UE可以接收MWS RAT的未来活动的时间和频率资源的指示。 UE可以至少部分地基于未来活动的时间和频率资源的指示来安排WCN RAT的通信。

    Systems and methods for antenna management using per-packet channel information
    48.
    发明授权
    Systems and methods for antenna management using per-packet channel information 有权
    使用每分组信道信息进行天线管理的系统和方法

    公开(公告)号：US08891703B2

    公开(公告)日：2014-11-18

    申请号：US13826659

    申请日：2013-03-14

    Applicant: QUALCOMM Incorporated

    Inventor： Sandip HomChaudhuri ,  Kai Shi ,  Alireza Raissinia ,  Ning Zhang

    IPC: H04B7/10 ,  H04W52/02 ,  H04B7/08

    CPC classification number: H04W52/0209 ,  H04B7/0617 ,  H04B7/0822 ,  H04B7/0874 ,  H04W52/028 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/22 ,  Y02D70/444

    Abstract: A wireless device that operates in accordance with the IEEE 802.11 standard receives the preamble of a packet with the highest number of receive chains enabled, thereby obtaining the highest gain, detection sensitivity and range. The wireless device determines a signal-to-noise ratio (SNR) in response to two different short training fields (STFs) in the preamble. The wireless device also determines a modulation and coding scheme (MCS) and a number of spatial streams (Nss) used to transmit the received packet in response to a signal field of the preamble. The wireless device uses these determined parameters to identify a minimum number of the receive chains required to reliably receive the packet. The wireless device uses only the identified minimum number of receive chains to perform channel estimation and receive the data portion of the packet.

    Abstract translation: 根据IEEE 802.11标准操作的无线设备接收具有最高数量的接收链启用的分组的前同步码，从而获得最高增益，检测灵敏度和范围。 无线设备响应于前导码中的两个不同的短训练场（STF）来确定信噪比（SNR）。 无线设备还确定响应于前导码的信号字段而用于发送所接收的分组的调制和编码方案（MCS）和多个空间流（Nss）。 无线设备使用这些确定的参数来识别可靠地接收分组所需的接收链的最小数量。 无线设备仅使用所识别的最小数量的接收链来执行信道估计并接收数据包的数据部分。

    COEXISTENCE MANAGEMENT USING A-PRIORI TIME DOMAIN INFORMATION
    49.
    发明申请
    COEXISTENCE MANAGEMENT USING A-PRIORI TIME DOMAIN INFORMATION 有权
    使用A-PRIORI时域信息的共同管理

    公开(公告)号：US20140056277A1

    公开(公告)日：2014-02-27

    申请号：US13891152

    申请日：2013-05-09

    Applicant: QUALCOMM INCORPORATED

    Inventor： Sandip HomChaudhuri ,  Firouz Behnamfar ,  Alireza Raissinia ,  Paul Husted

    IPC: H04W72/12

    CPC classification number: H04W72/1257 ,  H04W28/26 ,  H04W72/02 ,  H04W72/1278 ,  H04W88/06

    Abstract: A user equipment (UE) uses information regarding the timing of scheduling mobile wireless services (MWS) RAT communications to improve MWS and wireless network connectivity (WCN) radio access technology coexistence. To allow sufficient time for an uplink grant to be received by the UE in advance of the scheduled uplink time, an uplink grant may be sent in advance of the scheduled uplink time. In some instances, the UE may receive an indication of scheduled uplink time of the MWS RAT via a physical layer communication. The UE may schedule communications of the WCN RAT based at least in part on the indication of future activity.

    Abstract translation: 用户设备（UE）使用关于调度移动无线业务（MWS）RAT通信的定时的信息来改善MWS和无线网络连接（WCN）无线电接入技术共存。 为了在预定的上行链路时间之前允许UE接收上行链路许可的足够的时间，可以在调度的上行链路时间之前发送上行链路许可。 在一些情况下，UE可以经由物理层通信来接收MWS RAT的调度的上行链路时间的指示。 UE可以至少部分地基于未来活动的指示来安排WCN RAT的通信。

    SYSTEMS AND METHODS FOR CLOCK COMPENSATION
    50.
    发明申请
    SYSTEMS AND METHODS FOR CLOCK COMPENSATION 审中-公开
    用于时钟补偿的系统和方法

    公开(公告)号：US20130272455A1

    公开(公告)日：2013-10-17

    申请号：US13684973

    申请日：2012-11-26

    Applicant: QUALCOMM INCORPORATED

    Inventor： Sandip HomChaudhuri ,  Alireza Raissinia

    IPC: H04L27/26

    CPC classification number: H04L27/2647 ,  H04W52/0229 ,  H04W52/028 ,  H04W52/0293 ,  H04W56/0035 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/22

    Abstract: In a wireless communication system including a transmitter device and a receiver device, the receiver device may be configured to awake from a low power mode to receive beacons from the transmitter device. The receiver device may awaken an early reception interval prior to the beacon arrival time determined by the local clocks to account for inaccuracies in the local clocks and the transmitter clock. The early reception interval may be dynamically adjusted based upon an estimation of the clock errors to minimize the early reception interval.

    Abstract translation: 在包括发射机设备和接收机设备的无线通信系统中，接收机设备可以被配置为从低功率模式唤醒以从发射机设备接收信标。 接收机设备可以在由本地时钟确定的信标到达时间之前唤醒早期接收间隔，以解决本地时钟和发射机时钟中的不准确。 可以基于时钟误差的估计来动态地调整早期接收间隔，以使早期接收间隔最小化。

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