公开(公告)号：US10574306B2

公开(公告)日：2020-02-25

申请号：US15213620

申请日：2016-07-19

Applicant: QUALCOMM Incorporated

Inventor： Hao Xu ,  Stefan Geirhofer ,  Peter Gaal ,  Wanshi Chen ,  Yongbin Wei

IPC: H04B7/0417 ,  H04B7/0456 ,  H04L5/00 ,  H04B7/06

Abstract: Aspects of the present disclosure relate to techniques that may be utilized in networks with base stations and/or mobile devices that use large number of antennas or multi-dimensional arrays of antennas.

公开(公告)号：US10263741B2

公开(公告)日：2019-04-16

申请号：US14273049

申请日：2014-05-08

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Tao Luo ,  Stefan Geirhofer ,  Peter Gaal ,  Hao Xu

IPC: H04B7/06 ,  H04L5/00 ,  H04B7/024 ,  H04W72/12

Abstract: A method of wireless communications identifies a first virtual cell identity. The method also includes determining one or more virtual cells based on the identified first virtual cell identity. The method further includes processing one channel based on the determination.

公开(公告)号：US09698887B2

公开(公告)日：2017-07-04

申请号：US14199743

申请日：2014-03-06

Applicant: QUALCOMM Incorporated

Inventor： Stefan Geirhofer ,  Peter Gaal ,  Wanshi Chen ,  Hao Xu

IPC: H04L1/02 ,  H04B7/06 ,  H04B7/04

CPC classification number: H04B7/0626 ,  H04B7/0469 ,  H04B7/0478 ,  H04B7/0639 ,  H04B7/0647 ,  H04B7/0695

Abstract: A method for channel state information (CSI) reporting by a wireless communication device is described. The method includes determining a codebook for a CSI report corresponding to four transmit antenna (4Tx) transmissions from a base station. The codebook has a dual codebook structure. The method also includes generating the CSI report using the codebook. The method further includes transmitting the CSI report to a base station.

公开(公告)号：US09686772B2

公开(公告)日：2017-06-20

申请号：US13951250

申请日：2013-07-25

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Hao Xu ,  Peter Gaal ,  Tao Luo ,  Stefan Geirhofer ,  Aleksandar Damnjanovic

IPC: H04W72/04 ,  H04L5/00

CPC classification number: H04W72/0406 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0035 ,  H04L5/0048 ,  H04L5/0091

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for Coordinated Multipoint (CoMP) communications. Certain aspects relate to methods and apparatus for determining resource mapping and/or rate matching for CoMP operations.

公开(公告)号：US20170164374A1

公开(公告)日：2017-06-08

申请号：US15435029

申请日：2017-02-16

Applicant: QUALCOMM Incorporated

Inventor： Stefan Geirhofer ,  Naga Bhushan ,  Ravi Palanki ,  Aleksandar Damnjanovic ,  Parag Arun Agashe

IPC: H04W72/04 ,  H04W8/00 ,  H04W76/02

CPC classification number: H04W72/0493 ,  H04L1/00 ,  H04L1/0026 ,  H04L5/1438 ,  H04L67/104 ,  H04W8/005 ,  H04W28/08 ,  H04W28/18 ,  H04W72/02 ,  H04W76/14 ,  H04W84/18 ,  H04W92/18

Abstract: Techniques for determining resources to use for peer-to-peer (P2P) communication are disclosed. In an aspect, a network entity may receive feedback information (e.g., resource usage information and/or channel state information) from P2P devices and may perform resource partitioning based on the feedback information to allocate some of the available resources for P2P communication. The allocated resources may observe little or no interference from devices engaged in wide area network (WAN) communication. In another aspect, P2P groups may perform resource negotiation via a WAN connection (e.g., with little or no involvement by the WAN) to assign the allocated resources to different P2P groups. In yet another aspect, a device may autonomously determine whether to communicate with another device directly or via a WAN, e.g., whether to initiate P2P communication with another device and whether to terminate P2P communication. In yet another aspect, a network entity may participate in resource negotiation by P2P devices.

公开(公告)号：US09451595B2

公开(公告)日：2016-09-20

申请号：US13870927

申请日：2013-04-25

Applicant: QUALCOMM Incorporated

Inventor： Hao Xu ,  Wanshi Chen ,  Peter Gaal ,  Stefan Geirhofer

IPC: H04J3/16 ,  H04W72/04 ,  H04L1/00 ,  H04L1/18 ,  H04L5/00 ,  H04L5/14

CPC classification number: H04W72/0406 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0027 ,  H04L1/1845 ,  H04L5/001 ,  H04L5/0048 ,  H04L5/0053 ,  H04L5/1469

Abstract: Transmission of control data by a user equipment (UE) in circumstances following a TDD subframe reconfiguration from an evolved node B (eNB) may result in a conflict with a scheduled transmission of the control data. In one example, a UE may modify periodicity, content, priority, or other aspects of channel state information (CSI) or sounding reference signals (SRS) to resolve any conflicts resulting from a TDD subframe reconfiguration and to ensure transmission of the CSI or SRS. In another example, a UE may detect a hybrid automatic repeat request (HARQ) conflict resulting from a TDD subframe reconfiguration. In such example, the UE may determine and apply a HARQ soft buffer size for a HARQ process or determine and apply a codebook size for a HARQ process in carrier aggregation to resolve such HARQ conflict.

Abstract translation: 在来自演进节点B（eNB）的TDD子帧重新配置之后的情况下，用户设备（UE）的控制数据的传输可能导致与控制数据的调度传输的冲突。 在一个示例中，UE可以修改信道状态信息（CSI）或探测参考信号（SRS）的周期性，内容，优先级或其他方面，以解决由TDD子帧重配置导致的任何冲突并确保CSI或SRS的传输 。 在另一示例中，UE可以检测由TDD子帧重新配置产生的混合自动重复请求（HARQ）冲突。 在这种示例中，UE可以确定并应用用于HARQ过程的HARQ软缓冲器大小，或者确定并应用载波聚合中的HARQ进程的码本大小以解决这种HARQ冲突。

公开(公告)号：US09369930B2

公开(公告)日：2016-06-14

申请号：US13895292

申请日：2013-05-15

Applicant: QUALCOMM Incorporated

Inventor： Stefan Geirhofer ,  Tingfang Ji ,  Peter Gaal ,  Aleksandar Damnjanovic ,  Juan Montojo ,  Tao Luo ,  Wanshi Chen ,  Kapil Bhattad

IPC: H04W36/00 ,  H04L25/02 ,  H04L5/00

CPC classification number: H04W36/0077 ,  H04L5/0023 ,  H04L5/0032 ,  H04L5/005 ,  H04L5/0051 ,  H04L5/0057 ,  H04L5/006 ,  H04L25/0226

Abstract: A method, an apparatus, and a computer program product for wireless communication are provided for separating control transmissions and data transmissions within the coverage area of a plurality of transmission/reception points or points that are geographically displaced, the plurality of points comprising a macro node and a plurality of remote radio heads (RRHs) coupled to the macro node. Separating control transmissions and data transmissions in the macro node/RRH configuration may allow UEs to be associated with one set of transmission points for data transmissions and the same set or a different set of transmission points for common control signaling. Separating control transmissions and data transmissions may also allow for faster reconfiguration of antenna ports used for UE data transmission compared with reconfiguration via a handover process.

Abstract translation: 提供了一种用于无线通信的方法，装置和计算机程序产品，用于分离多个发送/接收点或地理位移的点的覆盖区域内的控制传输和数据传输，所述多个点包括宏节点 以及耦合到所述宏节点的多个远程无线电头（RRH）。 在宏节点/ RRH配置中分离控制传输和数据传输可以允许UE与用于数据传输的一组传输点和用于公共控制信令的相同集合或不同的传输点集合相关联。 与通过切换过程的重新配置相比，分离控制传输和数据传输还可以允许用于UE数据传输的天线端口的更快的重新配置。

公开(公告)号：US09357557B2

公开(公告)日：2016-05-31

申请号：US14612264

申请日：2015-02-02

Applicant: QUALCOMM Incorporated

Inventor： Stefan Geirhofer ,  Wanshi Chen ,  Tao Luo ,  Peter Gaal ,  Hao Xu

IPC: H04W72/08 ,  H04L5/00 ,  H04L25/02 ,  H04W24/10 ,  H04B7/06 ,  H04J11/00 ,  H04B7/02

CPC classification number: H04W72/085 ,  H04B7/024 ,  H04B7/0626 ,  H04J11/0053 ,  H04L5/0032 ,  H04L5/0035 ,  H04L5/0048 ,  H04L5/006 ,  H04L5/0092 ,  H04L25/0226 ,  H04L25/0228 ,  H04W24/10

Abstract: Aspects disclosed herein relate to channel and interference estimations in a coordinated multi-point (CoMP) environment. In the disclosed aspects, an eNB may be equipped to signal an identifier indicating a plurality of resource patterns, each associated with a resource pattern group, and each including a first resource element pattern for channel estimation and a second resource element pattern for interference estimation. The UE may be equipped to receive the signaling and perform channel estimation based at least in part on the first resource element pattern, and interference estimation based at least in part on the second resource pattern generate at least one channel state report based on the channel and interference estimations, and transmit at least one channel state report to an eNB. The eNB may determine one or more resources for use by the UE based on the at least one received channel state report.

公开(公告)号：US09209875B2

公开(公告)日：2015-12-08

申请号：US14512223

申请日：2014-10-10

Applicant: QUALCOMM INCORPORATED

Inventor： Peter Gaal ,  Stefan Geirhofer ,  Juan Montojo

IPC: H04B7/02 ,  H04L1/02 ,  H04B7/04 ,  H04B7/06

CPC classification number: H04B7/0456 ,  H04B7/0417 ,  H04B7/0465 ,  H04B7/0469 ,  H04B7/0478 ,  H04B7/0615 ,  H04B7/0626 ,  H04B7/063 ,  H04B7/0658

Abstract: Provided is a method of wireless communication which includes selecting a codebook from a plurality of codebooks in accordance with an antenna characteristic, and transmitting an indication of the selected codebook. Each of the plurality of codebooks is associated with one of a plurality of antenna characteristics. In some designs, channel state information is received from a user equipment. The channel state information may be used to determine downlink scheduling and/or precoding. In some designs, the channel state information may include feedback elements associated with different subband granularity. The feedback elements may also indicate a selection of a subset of precoder column vectors and/or a phase offset between two groups of transmit antennas.

Abstract translation: 提供了一种无线通信方法，其包括根据天线特性从多个码本中选择码本，并发送所选码本的指示。 多个码本中的每一个与多个天线特性之一相关联。 在一些设计中，从用户设备接收信道状态信息。 信道状态信息可以用于确定下行链路调度和/或预编码。 在一些设计中，信道状态信息可以包括与不同子带粒度相关联的反馈元件。 反馈元件还可以指示预编码器列向量的子集的选择和/或两组发射天线之间的相位偏移。

公开(公告)号：US20140036804A1

公开(公告)日：2014-02-06

申请号：US13948247

申请日：2013-07-23

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Peter Gaal ,  Stefan Geirhofer ,  Hao Xu

IPC: H04W72/04

CPC classification number: H04W72/0406 ,  H04L5/0053

Abstract: Certain aspects provide methods and apparatus for processing a control channel and/or a shared channel in a subframe based on a determination that one or more channel properties of the two channels are substantially the same. One example method generally includes receiving a control channel and a shared channel within a subframe; determining that one or more channel properties of the control channel and the shared channel in the subframe are substantially the same; and processing the control channel and the shared channel based on the determination. In this manner, estimations determined for a first channel may be assumed for a second channel whose channel properties are substantially the same as the first channel, rather than by separately determining the estimations for the second channel, thereby saving processing time.

Abstract translation: 基于两个信道的一个或多个信道特性基本相同的确定，某些方面提供了用于在子帧中处理控制信道和/或共享信道的方法和装置。 一个示例性方法通常包括在子帧内接收控制信道和共享信道; 确定所述子帧中的所述控制信道和所述共享信道的一个或多个信道属性基本相同; 以及基于所述确定来处理所述控制信道和所述共享信道。 以这种方式，对于其信道属性基本上与第一信道相同的第二信道，可以假定为第一信道确定的估计，而不是通过分别确定第二信道的估计，从而节省处理时间。