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    PEAK-TO-AVERAGE POWER RATIO MANAGEMENT FOR MULTI-CARRIER MODULATION IN WIRELESS COMMUNICATION SYSTEMS
    11.
    发明申请
    PEAK-TO-AVERAGE POWER RATIO MANAGEMENT FOR MULTI-CARRIER MODULATION IN WIRELESS COMMUNICATION SYSTEMS 有权

    公开(公告)号：US20130230003A1

    公开(公告)日：2013-09-05

    申请号：US13863256

    申请日：2013-04-15

    Applicant: QUALCOMM INCORPORATED

    Inventor： Rajiv VIJAYAN ,  Avneesh Agrawal ,  Sanjay Jha

    IPC: H04W72/04

    CPC classification number: H04W72/0453 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/0066 ,  H04L27/2614 ,  H04W52/343 ,  H04W52/367

    Abstract: Techniques for managing peak-to-average power ratio (PAPR) for multi-carrier modulation in wireless communication systems. Different terminals in a multiple-access system may have different required transmit powers. The number of carriers to allocate to each terminal is made dependent on its required transmit power. Terminals with higher required transmit powers may be allocated fewer carriers (associated with smaller PAPR) to allow the power amplifier to operate at higher power levels. Terminals with lower required transmit powers may be allocated more carriers (associated with higher PAPR) since the power amplifier is operated at lower power levels. The specific carriers to assign to the terminals may also be determined by their transmit power levels to reduce out-of-band emissions. Terminals with higher required transmit powers may be assigned with carriers near the middle of the operating band, and terminals with lower required transmit powers may be assigned with carriers near the band edges.

    Hearability improvements for reference signals
    13.
    发明授权
    Hearability improvements for reference signals 有权

    公开(公告)号：US09774431B2

    公开(公告)日：2017-09-26

    申请号：US14658915

    申请日：2015-03-16

    Applicant: QUALCOMM Incorporated

    Inventor： Avneesh Agrawal ,  Ashwin Sampath ,  Ravi Palanki ,  Naga Bhushan ,  Raja Sekhar Bachu ,  Aamod Dinkar Khandekar

    IPC: H04H20/71 ,  H04L5/00 ,  H04W72/12 ,  H04L1/18 ,  H04W72/00

    CPC classification number: H04L5/005 ,  H04L1/1893 ,  H04L5/0048 ,  H04L5/0082 ,  H04W72/005 ,  H04W72/1247

    Abstract: Systems and methodologies are described that facilitate providing high reuse for transmitting reference signals, such as positioning reference signals (PRS) and cell-specific reference signals (CRS), to improve hearability thereof for applications such as trilateration and/or the like. In particular, PRSs can be transmitted in designated or selected positioning subframes. Resource elements within the positioning subframe can be selected for transmitting the PRSs and can avoid conflict with designated control regions, resource elements used for transmitting cell-specific reference signals, and/or the like. Resource elements for transmitting PRSs can be selected according to a planned or pseudo-random reuse scheme. In addition, a transmit diversity scheme can be applied to the PRSs to minimize impact of introducing the PRSs to legacy devices. Moreover, potions of a subframe not designated for PRS transmission can be utilized for user plane data transmission.

    METHOD OF OPTIMIZING PORTIONS OF A FRAME
    14.
    发明申请
    METHOD OF OPTIMIZING PORTIONS OF A FRAME 有权
    优化框架部分的方法

    公开(公告)号：US20170012734A1

    公开(公告)日：2017-01-12

    申请号：US15274858

    申请日：2016-09-23

    Applicant: QUALCOMM Incorporated

    Inventor： Edward Harrison Teague ,  Avneesh Agrawal

    IPC: H04L1/00

    CPC classification number: H04L1/0003 ,  H04L1/0025 ,  H04L1/0026 ,  H04L1/0033 ,  H04L1/1812 ,  H04W72/085

    Abstract: Methods and apparatus for transmitting modulation parameters are disclosed. The apparatus and methods provide determination of when a particular modulation scheme is used by an access point. One or more modulation parameters associated with the particular modulation scheme and one or more timing values associated with the particular modulation scheme are then determined and transmitted using a portion of a broadcast channel transmitted by the access point.

    Abstract translation: 公开了用于发送调制参数的方法和装置。 该装置和方法提供确定接入点何时使用特定调制方案。 然后使用由接入点发送的广播信道的一部分来确定与特定调制方案相关联的一个或多个调制参数和与特定调制方案相关联的一个或多个定时值。

    Peak-to-average power ratio management for multi-carrier modulation in wireless communication systems
    15.
    发明授权
    Peak-to-average power ratio management for multi-carrier modulation in wireless communication systems 有权
    无线通信系统中多载波调制的峰均功率比管理

    公开(公告)号：US09544897B2

    公开(公告)日：2017-01-10

    申请号：US13863256

    申请日：2013-04-15

    Applicant: QUALCOMM Incorporated

    Inventor： Rajiv Vijayan ,  Avneesh Agrawal ,  Sanjay Jha

    IPC: H04B7/00 ,  H04W72/04 ,  H04L5/00 ,  H04L27/26 ,  H04W52/34 ,  H04W52/36

    CPC classification number: H04W72/0453 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/0066 ,  H04L27/2614 ,  H04W52/343 ,  H04W52/367

    Abstract: Techniques for managing peak-to-average power ratio (PAPR) for multi-carrier modulation in wireless communication systems. Different terminals in a multiple-access system may have different required transmit powers. The number of carriers to allocate to each terminal is made dependent on its required transmit power. Terminals with higher required transmit powers may be allocated fewer carriers (associated with smaller PAPR) to allow the power amplifier to operate at higher power levels. Terminals with lower required transmit powers may be allocated more carriers (associated with higher PAPR) since the power amplifier is operated at lower power levels. The specific carriers to assign to the terminals may also be determined by their transmit power levels to reduce out-of-band emissions. Terminals with higher required transmit powers may be assigned with carriers near the middle of the operating band, and terminals with lower required transmit powers may be assigned with carriers near the band edges.

    Abstract translation: 用于管理无线通信系统中多载波调制的峰均功率比（PAPR）的技术。 多址系统中的不同终端可能具有不同的所需传输功率。 分配给每个终端的载波数量取决于其所需的发射功率。 具有更高所需发射功率的终端可以被分配较少的载波（与较小的PAPR相关联），以允许功率放大器在较高的功率电平下工作。 由于功率放大器在较低的功率电平下工作，所以具有较低所需发射功率的终端可以分配更多的载波（与更高的PAPR相关联）。 分配给终端的特定载波也可以由其发射功率电平来确定，以减少带外发射。 具有更高要求的发射功率的终端可以被分配到靠近工作频带中间的载波，并且具有较低所需发射功率的终端可以被分配给带边缘附近的载波。

    Method and apparatus for mitigating pilot pollution in a wireless network
    16.
    发明授权
    Method and apparatus for mitigating pilot pollution in a wireless network 有权
    用于减轻无线网络中导频污染的方法和装置

    公开(公告)号：US09485068B2

    公开(公告)日：2016-11-01

    申请号：US14533404

    申请日：2014-11-05

    Applicant: QUALCOMM Incorporated

    Inventor： Tingfang Ji ,  Avneesh Agrawal ,  Alexei Y. Gorokhov

    IPC: H04L5/00 ,  H04L1/00 ,  H04W52/24 ,  H04W52/32 ,  H04W52/34 ,  H04L1/18 ,  H04L25/02

    CPC classification number: H04L5/0048 ,  H04L1/0004 ,  H04L1/001 ,  H04L1/0026 ,  H04L1/1812 ,  H04L5/0044 ,  H04L5/005 ,  H04L5/0053 ,  H04L5/0057 ,  H04L5/006 ,  H04L5/0062 ,  H04L25/0224 ,  H04W52/241 ,  H04W52/243 ,  H04W52/325 ,  H04W52/343

    Abstract: Techniques for mitigating pilot pollution in a wireless network are described. In an aspect, pilot pollution may be mitigated by reducing density and/or transmit power of common pilots whenever possible. A cell may send a common pilot at a first density and a first transmit power level during a first time period and may send the common pilot at a second density and a second transmit power level during a second time period. The second density may be lower than the first density and/or the second transmit power level may be lower than the first transmit power level. Lower density may be achieved by sending the common pilot less frequently, on fewer subcarriers, and/or from fewer antennas. The cell may determine whether to reduce the density and/or transmit power of the common pilot based on network loading, SINRs of terminals, etc. In another aspect, pilot pollution may be mitigated by performing pilot cancellation at a terminal.

    Abstract translation: 描述了减轻无线网络中导频污染的技术。 在一方面，可能通过尽可能减少公共飞行员的密度和/或发射功率来减轻飞行员污染。 小区可以在第一时间段期间以第一密度和第一发射功率电平发送公共导频，并且可以在第二时间段期间以第二密度和第二发射功率电平发送公共导频。 第二密度可以低于第一密度，和/或第二发射功率电平可能低于第一发射功率电平。 较低的密度可以通过在较少的子载波上和/或从更少的天线较少频率地发送公共导频来实现。 小区可以基于网络负载，终端的SINR等来确定是否降低公共导频的密度和/或发射功率。另一方面，可以通过在终端执行导频消除来减轻导频污染。

    Downlink interference cancellation methods
    18.
    发明授权
    Downlink interference cancellation methods 有权

    公开(公告)号：US11039449B2

    公开(公告)日：2021-06-15

    申请号：US14489999

    申请日：2014-09-18

    Applicant: QUALCOMM Incorporated

    Inventor： Avneesh Agrawal ,  Peter Gaal ,  Ravi Palanki ,  Alexei Yurievitch Gorokhov

    IPC: H04W72/08 ,  H04W48/08

    Abstract: A method to mitigate interference in a wireless system is provided. The method includes processing a set of radio network identifiers and limiting a number of hypotheses associated with the radio network identifiers in order to mitigate interference in a wireless network. In another aspect, the method includes processing a set of hypotheses and limiting the set of hypotheses by limiting a number of downlink grants to a common space, limiting the number of downlink grants to a number of instances, or limiting the number of grants to a physical downlink control channel (PDCCH) type. In yet another aspect, the method includes processing a downlink set and generating a target termination level for the downlink data set, the termination level associated with a Hybrid automatic repeat-request.

    Systems and methods to define control channels using reserved resource blocks
    19.
    发明授权
    Systems and methods to define control channels using reserved resource blocks 有权

    公开(公告)号：US10420078B2

    公开(公告)日：2019-09-17

    申请号：US14789332

    申请日：2015-07-01

    Applicant: QUALCOMM Incorporated

    Inventor： Aamod Khandekar ,  Juan Montojo ,  Avneesh Agrawal

    IPC: H04W72/04 ,  H04W16/14 ,  H04W88/06 ,  H04W88/10 ,  H04L5/00

    Abstract: Systems and methodologies are described that facilitate defining new control channels in legacy wireless networks. Control data resources for new systems can be defined over resources reserved for general data communications in the legacy wireless network specification. In this regard, legacy devices can still be supported by devices implementing new control data resources, and the new control data resources can avoid substantial interference that is typically exhibited over legacy control and/or reference signal resources by instead using the general data resources. In addition, new system devices can avoid scheduling data communication resources over the new control resources to create a substantially non-interfered global control segment. Control data can be transmitted over the segment using beacon-based technologies, reuse schemes, and/or the like.

    Interference mitigation for downlink in a wireless communication system
    20.
    发明授权
    Interference mitigation for downlink in a wireless communication system 有权

    公开(公告)号：US10027372B2

    公开(公告)日：2018-07-17

    申请号：US14991874

    申请日：2016-01-08

    Applicant: QUALCOMM Incorporated

    Inventor： Alexei Y. Gorokhov ,  Avneesh Agrawal

    IPC: H04B1/7103

    CPC classification number: H04B1/7103 ,  H04B2201/70702

    Abstract: Techniques for mitigating interference in a wireless communication system are described. In an aspect, pertinent transmission parameters for a served UE may be sent to at least one interfered UE to support interference mitigation. In one design, information for at least one transmission parameter for a data transmission sent by a first cell to a first UE may be transmitted to at least one UE served by a second cell to enable the at least one UE to perform interference mitigation for the data transmission sent by the first cell to the first UE. The information may be transmitted by either the first cell or the second cell. In another aspect, a cell may send transmission parameters for a UE via a pilot. In yet another aspect, scrambling may be performed by a cell at symbol level to enable an interfered UE to distinguish between modulation symbols of desired and interfering transmissions.

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