公开(公告)号：US09681425B2

公开(公告)日：2017-06-13

申请号：US13887168

申请日：2013-05-03

Applicant: QUALCOMM Incorporated

Inventor： Stefan Geirhofer ,  Wanshi Chen ,  Peter Gaal ,  Yongbin Wei ,  Naga Bhushan

IPC: H04W4/00 ,  H04W72/04 ,  H04B7/0417 ,  H04B7/06

CPC classification number: H04W72/0413 ,  H04B7/0417 ,  H04B7/0621 ,  H04B7/0632 ,  H04B7/0639

Abstract: A method, an apparatus, and a computer program product for wireless communication are provided in which downlink transmission modes in a wireless network are semi-statically configured for a mobile terminal in multiple-input multiple-output (MIMO) operation. The apparatus provides multiple precoding matrix indicators (PMIs) for a plurality of ranks. The provision of multiple PMIs by the apparatus enables balanced performance among different ranks and avoids less than optimal performance observed when the apparatus provides only a single rank and PMI that are generally not optimal for all transmissions. Feedback configuration information received by an apparatus defines a plurality of channel state information feedback instances conditioned on an admissible rank value. Rank indicators (RIs) and PMIs corresponding to the feedback instances are determined and feedback is provided for the channel state information feedback instances.

公开(公告)号：US09584297B2

公开(公告)日：2017-02-28

申请号：US13891143

申请日：2013-05-09

Applicant: QUALCOMM Incorporated

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

IPC: H04L5/14 ,  H04L5/00 ,  H04W72/08 ,  H01J1/02 ,  H04W72/12 ,  H04W72/04

CPC classification number: H04L5/14 ,  H01J1/02 ,  H04J1/02 ,  H04L5/001 ,  H04L5/0073 ,  H04L5/0092 ,  H04L5/1469 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/0426 ,  H04W72/0446 ,  H04W72/082 ,  H04W72/1268

Abstract: A method of wireless communications includes adapting to downlink/uplink resource allocations. In particular, the downlink/uplink communications may be adjusted according to time division duplexed (TDD) configurations of serving and neighbor cells.

Abstract translation: 一种无线通信方法包括适应下行链路/上行链路资源分配。 具体地，可以根据服务和相邻小区的时分双工（TDD）配置来调整下行链路/上行链路通信。

公开(公告)号：US09553702B2

公开(公告)日：2017-01-24

申请号：US14602027

申请日：2015-01-21

Applicant: QUALCOMM Incorporated

Inventor： Tao Luo ,  Stefan Geirhofer ,  Peter Gaal

IPC: H04W72/04 ,  H04L5/00 ,  H04B7/04 ,  H04B17/10 ,  H04B17/24 ,  H04B7/02 ,  H04B7/06

CPC classification number: H04L5/0035 ,  H04B7/024 ,  H04B7/0417 ,  H04B7/063 ,  H04B7/0665 ,  H04B7/0671 ,  H04B7/0673 ,  H04B17/104 ,  H04B17/24 ,  H04L5/0051 ,  H04L5/0053 ,  H04W72/0406 ,  H04W72/0413 ,  H04W72/0446

Abstract: A method for wireless communication is provided which includes receiving first and second signals transmitted from first and second antennas, respectively, determining a time offset between the first and second antennas based on the first and second signals, and reporting information regarding the time offset, including information regarding the time offset as being above or below a predetermined threshold. Another method for wireless communication is provided which includes generating channel state information feedback based on an assumption that the time offset is being compensated at a transmitter side. Yet another method for wireless communication is provided which includes receiving information regarding a time offset between multiple transmit antennas, including information regarding the time offset as being above or below a predetermined threshold, and adapting downlink transmissions to account for the time offset.

Abstract translation: 提供了一种用于无线通信的方法，包括分别接收从第一和第二天线发送的第一和第二信号，基于第一和第二信号确定第一和第二天线之间的时间偏移，以及报告关于时间偏移的信息，包括 关于时间偏移的信息高于或低于预定阈值。 提供了另一种用于无线通信的方法，其包括基于在发射机侧补偿时间偏移的假设来生成信道状态信息反馈。 提供了另一种用于无线通信的方法，其包括接收关于多个发射天线之间的时间偏移的信息，包括关于时间偏移的信息高于或低于预定阈值，以及适配下行链路传输以考虑时间偏移。

公开(公告)号：US09521664B2

公开(公告)日：2016-12-13

申请号：US14021980

申请日：2013-09-09

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/04 ,  H04L5/00 ,  H04B7/02 ,  H04B7/06 ,  H04L1/18 ,  H04L25/02

CPC classification number: H04W72/042 ,  H04B7/024 ,  H04B7/0626 ,  H04L1/0038 ,  H04L1/0067 ,  H04L1/1812 ,  H04L5/001 ,  H04L5/0035 ,  H04L5/0048 ,  H04L5/0053 ,  H04L25/0204 ,  H04W72/044

Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. In an aspect, the apparatus may receive a set of configurations for an EPDCCH that are tied to a set of configurations received for a PDSCH. The apparatus may then receive and process the EPDCCH based on at least one configuration from the set of configurations for the EPDCCH. In another aspect, the apparatus may determine at least a first and second resource set configured for a control channel and may determine a common set of aggregation levels for the first and second resource sets. The apparatus may further determine first rate-matching parameters for the first resource set and second rate-matching parameters for the second resource set, and may process the control channel using the common set of aggregation levels and the first and second rate-matching parameters.

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。 在一个方面，该装置可以接收与针对PDSCH接收的一组配置相关联的EPDCCH的一组配置。 然后，装置可以基于EPDCCH的一组配置中的至少一个配置来接收和处理EPDCCH。 在另一方面，设备可以确定为控制信道配置的至少第一和第二资源集合，并且可以确定第一和第二资源集合的公共集合级别集合。 该装置还可以确定第一资源集合的第一速率匹配参数和用于第二资源集合的第二速率匹配参数，并且可以使用公共集合级别和第一和第二速率匹配参数处理控制信道。

公开(公告)号：US09503924B2

公开(公告)日：2016-11-22

申请号：US14155661

申请日：2014-01-15

Applicant: QUALCOMM Incorporated

Inventor： Stefan Geirhofer ,  Peter Gaal ,  Naga Bhushan ,  Alan Barbieri

IPC: H04L1/00 ,  H04W4/00 ,  H04J11/00 ,  H04W72/00 ,  H04B3/36 ,  H04L27/28 ,  H04W24/10 ,  H04B7/02 ,  H04L5/00 ,  H04B7/04 ,  H04B7/06

CPC classification number: H04W24/10 ,  H04B7/024 ,  H04B7/0417 ,  H04B7/0619 ,  H04B7/0639 ,  H04B7/066 ,  H04L1/0023 ,  H04L1/0026 ,  H04L1/0032 ,  H04L5/0091

Abstract: According to example embodiments, a method for wireless communications by a user equipment (UE) is included. The method generally includes performing channel estimation at a plurality of frequency locations based on reference signals (RS) transmitted from at least one transmission point, computing at least one channel feedback metric for each frequency location, and transmitting the channel feedback metrics to the transmission point. According to certain aspects, a method for wireless communications by a base station (BS) is provided. The BS may receive channel feedback metrics from a UE, calculated at a plurality of frequency locations based on RSs transmitted from the BS. The BS may perform interpolation to determine values for channel feedback metrics for frequency locations between frequency locations of the received channel feedback metrics.

Abstract translation: 根据示例实施例，包括用于用户设备（UE）的无线通信的方法。 该方法通常包括基于从至少一个传输点发送的参考信号（RS）在多个频率位置处执行信道估计，为每个频率位置计算至少一个信道反馈度量，以及将信道反馈度量传输到传输点 。 根据某些方面，提供了一种由基站（BS）进行无线通信的方法。 BS可以基于从BS发送的RS在多个频率位置处计算来自UE的信道反馈度量。 BS可以执行内插以确定用于接收的信道反馈度量的频率位置之间的频率位置的信道反馈度量的值。

公开(公告)号：US09397738B2

公开(公告)日：2016-07-19

申请号：US13895772

申请日：2013-05-16

Applicant: QUALCOMM Incorporated

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

IPC: H04B7/04 ,  H04B7/06

CPC classification number: H04B7/0417 ,  H04B7/0456 ,  H04B7/0639 ,  H04L5/0048

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. According to certain aspects, a method for wireless communications is provided. The method may be performed, for example, by a base station and generally includes mapping N physical antennas arranged in at least two dimensions to K virtual antennas, wherein K is less than N, transmitting reference signals (RS) via the K virtual antennas, and receiving, from a user equipment, feedback based on the RS transmitted on the K virtual antennas.

Abstract translation: 本公开的方面涉及可以在具有使用大量天线或多维天线阵列的基站和/或移动设备的网络中使用的技术。 根据某些方面，提供了一种用于无线通信的方法。 该方法可以例如由基站执行，并且通常包括将至少二维布置的N个物理天线映射到K个虚拟天线，其中K小于N，经由K个虚拟天线发送参考信号（RS） 并且从用户设备接收基于在K个虚拟天线上发送的RS的反馈。

公开(公告)号：US09337982B2

公开(公告)日：2016-05-10

申请号：US14243753

申请日：2014-04-02

Applicant: QUALCOMM Incorporated

Inventor： Stefan Geirhofer ,  Wanshi Chen ,  Peter Gaal ,  Hao Xu ,  Xiaoxia Zhang ,  Ashok Mantravadi ,  Tao Luo

IPC: H04W4/00 ,  H04L5/00 ,  H04B7/06 ,  H04B7/04

CPC classification number: H04L5/0053 ,  H04B7/0413 ,  H04B7/0617 ,  H04B7/0626 ,  H04B7/0689 ,  H04B7/0691

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for adaptive antenna management in LTE. Devices and networks capable of transmitting and receiving signals using a variable number of transmitting or receiving antennas using LTE radio access technology are described.

Abstract translation: 本公开的某些方面涉及用于LTE中的自适应天线管理的方法和装置。 描述了能够使用LTE无线电接入技术使用可变数量的发射或接收天线发射和接收信号的设备和网络。

公开(公告)号：US09155098B2

公开(公告)日：2015-10-06

申请号：US13830821

申请日：2013-03-14

Applicant: QUALCOMM Incorporated

Inventor： Stefan Geirhofer ,  Wanshi Chen ,  Peter Gaal

IPC: H04W4/00 ,  H04W72/04 ,  H04L1/00

CPC classification number: H04W72/048 ,  H04L1/0026 ,  H04L1/0027

Abstract: A method of wireless communication includes determining a capability for a number of channel state information configurations supported by a user equipment (UE). The channel state information processes link a channel measurement report with an interference measurement report. The UE transmits the capability to an eNodeB. Additionally, the UE receives CSI process configurations. The CSI process configurations identify CSI processes that can be requested by the eNodeB.

Abstract translation: 一种无线通信方法包括确定由用户设备（UE）支持的多个信道状态信息配置的能力。 信道状态信息处理将信道测量报告与干扰测量报告相连接。 UE向eNodeB发送能力。 另外，UE接收CSI过程配置。 CSI过程配置识别可由eNodeB请求的CSI进程。

公开(公告)号：US09055582B2

公开(公告)日：2015-06-09

申请号：US13666582

申请日：2012-11-01

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Peter Gaal ,  Tao Luo ,  Jelena Damnjanovic ,  Stefan Geirhofer

IPC: H04W72/04 ,  H04L5/00

Abstract: Certain aspects of the present disclosure provide techniques for managing resources utilized for enhanced physical downlink control channel (PDCCH) transmissions. According to certain aspects, a method is provided for wireless communications which may be performed, for example, by a user equipment (UE). The method generally includes receiving signaling indicating a set of time and frequency resources in one or more subframes allocated for an enhanced physical downlink control channel (PDCCH), receiving a downlink transmission in a subframe, making a determination to monitor for the enhanced PDCCH in the subframe based on the signaling, and decoding the enhanced PDCCH transmitted using the set of time and frequency resources in the subframe, in response to the determination.

公开(公告)号：US08937906B2

公开(公告)日：2015-01-20

申请号：US13665771

申请日：2012-10-31

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Peter Gaal ,  Yongbin Wei ,  Juan Montojo ,  Tao Luo ,  Hao Xu ,  Stefan Geirhofer ,  Jelena Damnjanovic ,  Aleksandar Damnjanovic

IPC: H04Q7/00 ,  H04J3/16 ,  H04L5/00

CPC classification number: H04L5/0053 ,  H04L5/0007

Abstract: Aspects of the present disclosure relate generally to wireless communication systems, and more particularly, to defining a structure of and enhanced physical downlink control channel (e-PDCCH). Certain aspects provide methods and apparatus for determining a search space in which a base station (eNodeB) may transmit an enhanced physical downlink control channel (e-PDCCH), wherein the search space comprises one or more fractional portions of frequency-time resources of a physical resource block (PRB) pair, and attempting to decode the e-PDCCH based on the determined search space.

Abstract translation: 本公开的方面一般涉及无线通信系统，更具体地，涉及定义和增强物理下行链路控制信道（e-PDCCH）的结构。 某些方面提供用于确定搜索空间的方法和装置，其中基站（eNodeB）可以在其中发送增强的物理下行链路控制信道（e-PDCCH），其中搜索空间包括一个或多个频率 - 时间资源的小数部分 物理资源块（PRB）对，并且基于所确定的搜索空间尝试对所述e-PDCCH进行解码。