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    • 22. 发明申请
    • ENFORCING CONSTANT MODULUS AND FINITE ALPHABET PROPERTIES IN ADAPTIVE AND DUAL-STAGE CODEBOOKS
    • 在自适应和双级代码书中执行恒定模式和有效的字符特性
    • WO2012024326A1
    • 2012-02-23
    • PCT/US2011/047972
    • 2011-08-16
    • QUALCOMM INCORPORATEDGEIRHOFER, StefanGAAL, PeterMONTOJO, Juan
    • GEIRHOFER, StefanGAAL, PeterMONTOJO, Juan
    • H04B7/04H04B7/06
    • H04B7/0417H04B7/0465H04B7/0478H04B7/0634H04B7/065
    • Methods and apparatus for enforcing codebook properties (e.g., constant modulus and/or finite alphabet) in adaptive and dual-stage codebooks are described. One example method generally includes receiving multiple feedback aspects of a channel for wireless communications determining multiple codewords based on the multiple feedback aspects, determining a final precoding matrix based on the multiple codewords, enforcing at least one codebook property in at least one of the multiple codewords or the final precoding matrix, applying the final precoding matrix to a plurality of spatial streams to form precoded spatial streams, and transmitting the precoded spatial streams. For certain aspects, enforcing the at least one codebook property includes quantizing elements in each of the multiple codewords and/or the final precoding matrix to the nearest value in a finite alphabet or to increase a performance metric.
    • 描述了在自适应和双级码本中强制码本属性(例如恒定模数和/或有限字母表)的方法和装置。 一个示例性方法通常包括接收用于基于多个反馈方面确定多个码字的无线通信的信道的多个反馈方面,基于多个码字确定最终预编码矩阵,在多个码字中的至少一个中实施至少一个码本属性 或最终预编码矩阵,将最终预编码矩阵应用于多个空间流以形成预编码的空间流,以及发送预编码的空间流。 对于某些方面,强制执行至少一个码本属性包括在多个码字和/或最终预编码矩阵中的每个中将元素量化到有限字母表中的最接近的值,或者增加性能度量。
    • 23. 发明申请
    • SCALABLE CHANNEL FEEDBACK FOR WIRELESS COMMUNICATION
    • 用于无线通信的可扩展通道反馈
    • WO2011041759A1
    • 2011-04-07
    • PCT/US2010/051230
    • 2010-10-01
    • QUALCOMM IncorporatedGEIRHOFER, StefanGOROKHOV, Alexei Yurievitch
    • GEIRHOFER, StefanGOROKHOV, Alexei Yurievitch
    • H04W24/10
    • H04W24/10H04B7/024H04B7/0626H04B7/0645H04B7/0658H04W8/24
    • Techniques for reporting channel state information (CSI) based on scalable channel feedback are described. A user equipment (UE) may receive data transmission from one or more cells among a plurality of cells and may report CSI for each of the plurality of cells. For scalable channel feedback, the UE may report CSI with different granularity for different cells. The granularity of feedback for each cell may be selected based on the quality of a communication channel between the cell and the UE, which may be determined based on a long-term channel gain for the cell. The granularity of feedback may be defined by a subband size, a reporting interval, granularity of quantization of CSI, etc. The UE may report CSI for each cell based on the granularity of feedback for the cell. The UE may receive data transmission sent by at least one cell based on the reported CSI.
    • 描述了基于可扩展信道反馈来报告信道状态信息(CSI)的技术。 用户设备(UE)可以从多个小区中的一个或多个小区接收数据传输,并且可以为多个小区中的每个小区报告CSI。 对于可扩展的信道反馈,UE可以针对不同的小区报告具有不同粒度的CSI。 可以基于小区和UE之间的通信信道的质量来选择每个小区的反馈的粒度,其可以基于小区的长期信道增益来确定。 反馈的粒度可以由子带大小,报告间隔,CSI的量化粒度等来定义.UE可以基于小区的反馈的粒度来报告每个小区的CSI。 UE可以基于所报告的CSI接收由至少一个小区发送的数据传输。
    • 28. 发明申请
    • METHOD AND APPARATUS FOR PERFORMING COORDINATED MULTIPOINT FEEDBACK UNDER MULTIPLE CHANNEL AND INTERFERENCE ASSUMPTIONS
    • 在多通道和干扰估计下执行协调多点反馈的方法和装置
    • WO2013170114A1
    • 2013-11-14
    • PCT/US2013/040480
    • 2013-05-10
    • QUALCOMM INCORPORATED
    • GEIRHOFER, StefanCHEN, WanshiGAAL, PeterWEI, Yongbin
    • H04B7/02
    • H04L5/0057H04B7/024
    • Certain aspects of the present disclosure provide methods and apparatus for performing coordinated multipoint (CoMP) channel state information (CSI) feedback under multiple channel and interference assumptions. One method generally includes receiving signaling indicating at least one or more interference measurement resources (IMRs) from a network and a configuration with one or more non-zero power reference signal (NZP-RS) resources in which one or more base stations transmit a RS, performing separate interference measurements at least on a per-IMR basis in one or more subframes by forming a baseline interference estimate based on the IMR and forming separate interference estimates based on adding interference from selected NZP-RS resources to the baseline interference estimate, and transmitting one or more CSI feedback reports that correspond to the interference measurements.
    • 本公开的某些方面提供了用于在多信道和干扰假设下执行协调多点(CoMP)信道状态信息(CSI)反馈的方法和装置。 一种方法通常包括从网络和具有一个或多个非零功率参考信号(NZP-RS)资源的配置接收指示至少一个或多个干扰测量资源(IMR)的信令,其中一个或多个基站发送RS 至少在一个或多个子帧中以每IMR为基础,通过基于IMR形成基线干扰估计并基于将来自所选NZP-RS资源的干扰添加到基线干扰估计而形成单独的干扰估计,来执行单独的干扰测量,以及 发送对应于干扰测量的一个或多个CSI反馈报告。