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：US09025479B2

公开(公告)日：2015-05-05

申请号：US13633836

申请日：2012-10-02

Applicant: QUALCOMM Incorporated

Inventor： Peter Gaal ,  Tingfang Ji ,  Alan Barbieri

IPC: H04W24/02 ,  H04L5/00

CPC classification number: H04W24/02 ,  H04L5/005 ,  H04L5/0094

Abstract: A method of wireless communication is presented. The method includes signaling a first number of channel state information-reference signal (CSI-RS) ports corresponding to resource elements (REs) and a second number of virtual antenna ports, the second number being less than or equal to the first number. The method also includes transmitting CSI-RS on each virtual antenna port, the CSI-RS mapped to at least a portion of the REs.

Abstract translation: 提出了一种无线通信方法。 该方法包括发送对应于资源元素（RE）和第二数量的虚拟天线端口的第一数量的信道状态信息参考信号（CSI-RS）端口，第二数量小于或等于第一数量。 该方法还包括在每个虚拟天线端口上发送CSI-RS，映射到RE的至少一部分的CSI-RS。

公开(公告)号：US20150063253A1

公开(公告)日：2015-03-05

申请号：US14460827

申请日：2014-08-15

Applicant: QUALCOMM INCORPORATED

Inventor： Alan Barbieri ,  Milos Jorgovanovic ,  Tao Luo

IPC: H04L5/00

CPC classification number: H04L5/0048 ,  H04B7/024 ,  H04J11/0023 ,  H04J11/0053 ,  H04J2211/001 ,  H04L5/0073

Abstract: Methods, systems, and devices are described for identifying channel state information reference signals (CSI-RS) from a non-serving cell in a wireless communications network. A subset of virtual cell identity (VCID) candidates may be identified, and one or more CSI-RS locations for one or more CSI-RS in a received signal from a non-serving cell may be determined The CSI-RS locations may be determined based on periodicity properties of CSI-RS transmissions of the subset of VCID candidates. The one or more determined locations in the received signal may be used to identify the one or more CSI-RS in the received signal through searching the locations for all available VCIDs in a set of VCIDs.

Abstract translation: 描述了用于从无线通信网络中的非服务小区识别信道状态信息参考信号（CSI-RS）的方法，系统和设备。 可以识别虚拟小区标识（VCID）候选的子集，并且可以确定来自非服务小区的接收信号中的一个或多个CSI-RS的一个或多个CSI-RS位置。可以确定CSI-RS位置 基于VCID候选子集的CSI-RS传输的周期特性。 接收信号中的一个或多个确定的位置可以用于通过搜索一组VCID中的所有可用VCID的位置来识别接收信号中的一个或多个CSI-RS。

公开(公告)号：US09814073B2

公开(公告)日：2017-11-07

申请号：US14165351

申请日：2014-01-27

Applicant: QUALCOMM Incorporated

Inventor： Alan Barbieri ,  Hao Xu ,  Vikas Jain ,  Durga Prasad Malladi ,  Awaiz Ahmad Khan ,  Samatha Kotla ,  Balwinderpal Sachdev

IPC: H04W74/08 ,  H04W52/28 ,  G01S5/00 ,  H04W64/00 ,  H04L1/00 ,  H04W52/02 ,  G01S5/02 ,  H04W28/16

CPC classification number: H04W74/0833 ,  G01S5/00 ,  G01S5/02 ,  H04L1/00 ,  H04W28/16 ,  H04W52/0206 ,  H04W52/0229 ,  H04W52/283 ,  H04W64/00 ,  Y02D70/122 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/20

Abstract: Improvements to signaling procedures for use in physical random access channel (PRACH)-based proximity detection are disclosed. Signaling and signaling processes from a serving base station may trigger a more efficient and reliable transmission of PRACH from related user equipment (UE). At the dynamic power nodes (DPNs) monitoring for such PRACH-based proximity, features are disclosed which establish neighbor lists for more efficient management of detection and proximity activation.

公开(公告)号：US09781709B2

公开(公告)日：2017-10-03

申请号：US15009491

申请日：2016-01-28

Applicant: QUALCOMM Incorporated

Inventor： Alan Barbieri ,  Tingfang Ji

IPC: H04W24/00 ,  H04W72/04 ,  H04L5/00 ,  H04W24/10 ,  H04W72/06

CPC classification number: H04W72/0413 ,  H04L5/0023 ,  H04L5/0053 ,  H04L5/0057 ,  H04W24/10 ,  H04W72/06

Abstract: Rank indicator and channel quality indicator (CQI) estimation and reporting functionalities are discussed with regard to heterogeneous networks to reduce the number of inconsistent CQI estimates transmitted to an evolved node B (eNB), where the CQI is defined as inconsistent when the rank indicator, on which the CQI is conditioned, is from a different subframe type than the subframe on which the CQI is to be estimated.

公开(公告)号：US09584285B2

公开(公告)日：2017-02-28

申请号：US14568065

申请日：2014-12-11

Applicant: QUALCOMM INCORPORATED

Inventor： Alan Barbieri ,  Tingfang Ji ,  Hao Xu ,  Wanshi Chen

IPC: H04W72/00 ,  H04L5/00 ,  H04W72/08 ,  H04W72/04 ,  H04W24/10 ,  H04W88/02 ,  H04W88/08

CPC classification number: H04L5/0053 ,  H04L5/0035 ,  H04L5/0073 ,  H04W24/10 ,  H04W72/0413 ,  H04W72/082 ,  H04W88/02 ,  H04W88/08

Abstract: Periodic over-the-air channel state information (CSI) reporting to serving cells and one or more non-serving cells via a control channel multi-point attachment is disclosed. The channel state information report may be transmitted based on information indicating how to transmit the channel state information report to the non-serving cell. The information indicating how to transmit the channel state information report may be provided by the serving eNodeB. The information may include a periodicity, offset parameters, timing advance commands, power control commands, and/or an aperiodic report request.

Abstract translation: 公开了经由控制信道多点连接向服务小区和一个或多个非服务小区报告的定期空中信道状态信息（CSI）。 可以基于指示如何将信道状态信息报告发送到非服务小区的信息来发送信道状态信息报告。 指示如何发送信道状态信息报告的信息可以由服务eNodeB提供。 信息可以包括周期性，偏移参数，定时提前命令，功率控制命令和/或非周期性报告请求。

公开(公告)号：US09544115B2

公开(公告)日：2017-01-10

申请号：US14253665

申请日：2014-04-15

Applicant: QUALCOMM Incorporated

Inventor： Alan Barbieri ,  Milos Jorgovanovic ,  Tao Luo

IPC: H04L5/00

CPC classification number: H04L5/005 ,  H04L5/0007 ,  H04L5/0035 ,  H04L5/0073

Abstract: Methods and apparatuses are described for improving identification of reference signal transmissions at a user equipment (UE). One or more restrictions related to reference signal transmissions in one or more interfering signals can be identified. One or more reference signal transmissions received in the one or more interfering signals can then be detected based at least in part on the one or more restrictions. The one or more reference signal transmissions received in the one or more interfering signals can be processed to improve communications with a serving base station.

Abstract translation: 描述了用于改善在用户设备（UE）处的参考信号传输的识别的方法和装置。 可以识别与一个或多个干扰信号中的参考信号传输相关的一个或多个限制。 然后可以至少部分地基于一个或多个限制来检测在一个或多个干扰信号中接收的一个或多个参考信号传输。 可以处理在一个或多个干扰信号中接收的一个或多个参考信号传输，以改善与服务基站的通信。

公开(公告)号：US20160150528A1

公开(公告)日：2016-05-26

申请号：US15009491

申请日：2016-01-28

Applicant: QUALCOMM Incorporated

Inventor： Alan Barbieri ,  Tingfang Ji

IPC: H04W72/04 ,  H04W72/06 ,  H04L5/00

CPC classification number: H04W72/0413 ,  H04L5/0023 ,  H04L5/0053 ,  H04L5/0057 ,  H04W24/10 ,  H04W72/06

Abstract: Rank indicator and channel quality indicator (CQI) estimation and reporting functionalities are discussed with regard to heterogeneous networks to reduce the number of inconsistent CQI estimates transmitted to an evolved node B (eNB), where the CQI is defined as inconsistent when the rank indicator, on which the CQI is conditioned, is from a different subframe type than the subframe on which the CQI is to be estimated.

Abstract translation: 针对异构网络讨论秩指示符和信道质量指示符（CQI）估计和报告功能，以减少发送到演进节点B（eNB）的不一致CQI估计数，其中当秩指示符定义为不一致时， CQI被调节，来自与要在其上估计CQI的子帧不同的子帧类型。

公开(公告)号：US09288004B2

公开(公告)日：2016-03-15

申请号：US13974954

申请日：2013-08-23

Applicant: QUALCOMM Incorporated

Inventor： Alan Barbieri ,  Hao Xu ,  Madhavan Srinivasan Vajapeyam ,  Aleksandar Damnjanovic

IPC: H04W4/00 ,  H04J3/16 ,  H04W72/04 ,  H04W16/14 ,  H04W84/04 ,  H04L1/00

CPC classification number: H04J3/1694 ,  H04L1/0025 ,  H04W16/14 ,  H04W72/042 ,  H04W84/045

Abstract: Time division multiplexing (TDM) partitioning is one of the inter-cell interference coordination (ICIC) mechanisms considered for a heterogeneous network (HetNet) ICIC in a co-channel deployment. For example, in subframes that are pre-allocated to an evolved Node B (eNB), neighbor eNBs may not transmit, hence interference experienced by served user equipments (UEs) may be reduced. Semi-persistent scheduling (SPS) grants may have various available periodicities, which may not be compatible with TDM partitioning. Therefore, a UE may miss an SPS opportunity that was scheduled for a subframe that was not usable by the UE. Hence, using SPS grants with small periodicities in a heterogeneous network with TDM partitioning may require changes which may include adjusting the periodicities of the SPS grants, rescheduling of uplink SPS messages based on resource partitioning information (RPI), and/or determining RPI based on current SPS grants.

Abstract translation: 时分复用（TDM）分区是在同频道部署中为异构网络（HetNet）ICIC考虑的小区间干扰协调（ICIC）机制之一。 例如，在预分配给演进节点B（eNB）的子帧中，相邻eNB可能不发送，因此可能减少被服务用户设备（UE）经历的干扰。 半静态调度（SPS）授权可能具有各种可用的周期性，这可能与TDM分区不兼容。 因此，UE可能错过针对UE不可用的子帧调度的SPS机会。 因此，在具有TDM分割的异构网络中使用具有小周期性的SPS授权可能需要改变，其可以包括调整SPS授权的周期性，基于资源划分信息（RPI）重新安排上行SPS消息，和/或基于 当前SPS赠款。

公开(公告)号：US20140348019A1

公开(公告)日：2014-11-27

申请号：US14456916

申请日：2014-08-11

Applicant: QUALCOMM Incorporated

Inventor： Alan Barbieri ,  Parag Arun Agashe ,  Aleksandar Damnjanovic ,  Tingfang Ji ,  Tao Luo ,  Madhavan Srinivasan Vajapeyam ,  Yongbin Wei ,  Hao Xu ,  Taesang Yoo

IPC: H04L5/00 ,  H04W24/08

CPC classification number: H04L5/0057 ,  H04L1/0026 ,  H04L1/0028 ,  H04W24/00 ,  H04W24/08 ,  H04W28/16 ,  Y02D70/1222 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/23

Abstract: Techniques for estimating and reporting channel quality indicator (CQI) are disclosed. Neighboring base stations may cause strong interference to one another and may be allocated different resources, e.g., different subframes. A UE may observe different levels of interference on different resources. In an aspect, the UE may determine a CQI for resources allocated to a base station and having reduced or no interference from at least one interfering base station. In another aspect, the UE may determine multiple CQI for resources of different types and associated with different interference levels. For example, the UE may determine a first CQI based on at least one first subframe allocated to the base station and having reduced or no interference from the interfering base station(s). The UE may determine a second CQI based on at least one second subframe allocated to the interfering base station(s).

Abstract translation: 公开了用于估计和报告信道质量指示符（CQI）的技术。 相邻的基站可能导致彼此的强干扰，并且可以分配不同的资源，例如不同的子帧。 UE可以在不同的资源上观察不同级别的干扰。 在一方面，UE可以为分配给基站并且具有来自至少一个干扰基站的减少或没有干扰的资源确定CQI。 在另一方面，UE可以为不同类型的资源确定多个CQI并且与不同的干扰电平相关联。 例如，UE可以基于分配给基站的至少一个第一子帧并且具有来自干扰基站的减少或没有干扰来确定第一CQI。 UE可以基于分配给干扰基站的至少一个第二子帧来确定第二CQI。