公开(公告)号：US20140211677A1

公开(公告)日：2014-07-31

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

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.

Abstract translation: 公开了用于在基于物理随机接入信道（PRACH）的接近检测中的信令过程的改进。 来自服务基站的信令和信令过程可以触发来自相关用户设备（UE）的PRACH的更有效和可靠的传输。 在针对这种基于PRACH的接近度的动态功率节点（DPN）监测的特征被公开，其建立邻居列表以更有效地管理检测和接近激活。

公开(公告)号：US20130343355A1

公开(公告)日：2013-12-26

申请号：US13974954

申请日：2013-08-23

Applicant: QUALCOMM Incorporated

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

IPC: H04J3/16

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的SPS许可可能需要改变，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：US20130155973A1

公开(公告)日：2013-06-20

申请号：US13710803

申请日：2012-12-11

Applicant: QUALCOMM Incorporated

Inventor： Stefan Geirhofer ,  Peter Gaal ,  Tingfang Ji ,  Alan Barbieri

IPC: H04W72/12

CPC classification number: H04B7/0632 ,  H04W72/1231

Abstract: A method for providing multi-hypothesis channel quality indicator (MH-CQI) feedback is described. Hypotheses corresponding to rank indicator (RI) and precoding matrix indicator (PMI) assumptions associated with a dominant interferer are selected. Multi-hypothesis channel quality indicator (MH-CQI) values based on the selected hypotheses are generated. The multi-hypothesis channel quality indicator (MH-CQI) values are encoded. The multi-hypothesis channel quality indicator (MH-CQI) values are sent as feedback.

Abstract translation: 描述了一种用于提供多假设信道质量指示符（MH-CQI）反馈的方法。 选择与排名指示符（RI）相对应的假设和与主要干扰源相关联的预编码矩阵指示符（PMI）假设。 产生基于所选假设的多假设信道质量指示符（MH-CQI）值。 多假设信道质量指示符（MH-CQI）值被编码。 多假设信道质量指标（MH-CQI）值作为反馈发送。

公开(公告)号：US10986666B2

公开(公告)日：2021-04-20

申请号：US14137468

申请日：2013-12-20

Applicant: QUALCOMM Incorporated

Inventor： Madhavan Srinivasan Vajapeyam ,  Aleksandar Damnjanovic ,  Tingfang Ji ,  Osok Song ,  Tao Luo ,  Hao Xu ,  Yongbin Wei ,  Alan Barbieri ,  Durga Prasad Malladi

IPC: H04W74/08 ,  H04W28/18

Abstract: Certain aspects of the present disclosure provide various mechanisms that allow a user equipment to convey information regarding one or more attributes to a base station during a random access (RA) procedure. The attributes may include, for example a capability of the UE (e.g., to support a particular feature or version of a standard) or a condition of the UE (e.g., if it is currently experiencing an interference condition).

公开(公告)号：US09794026B2

公开(公告)日：2017-10-17

申请号：US14245155

申请日：2014-04-04

Applicant: QUALCOMM Incorporated

Inventor： Alan Barbieri ,  Tao Luo

IPC: H04L1/00 ,  H04B1/10 ,  H04L5/00 ,  H04W24/02 ,  H04J11/00 ,  H03M13/37 ,  H04W84/04

CPC classification number: H04L1/005 ,  H03M13/3746 ,  H03M13/3784 ,  H04J11/004 ,  H04J11/0043 ,  H04J11/005 ,  H04L1/0048 ,  H04L5/0032 ,  H04W24/02 ,  H04W84/045

Abstract: Real-time selection of interference cancellation schemes based on transmission parameters and amount of resource overlap between the desired payload and the interfering payload. Codeword level interference cancellation may be performed where the signal quality of the interfering signal indicates that the interfering payload will be decoded correctly. When performed, codeword level interference cancellation may be monitored to determine if decoding the interfering payload is converging. Other interference cancellation schemes may be selected based on the signal quality of the interfering signal or non-converging decode of the interfering payload. The number of iterations for iterative decoding in codeword level interference cancellation may be dynamically selected. The decoder output (e.g., soft bits) may be used to perform interference cancellations before the decoder is fully converged. Iterative decoding may be performed in multiple passes and soft decision output form one pass may be used to initialize the decoder for a subsequent pass.

公开(公告)号：US09497751B2

公开(公告)日：2016-11-15

申请号：US14318494

申请日：2014-06-27

Applicant: QUALCOMM Incorporated

Inventor： Alan Barbieri ,  Tao Luo

IPC: H04W72/04 ,  H04W72/08 ,  H04L1/00 ,  H04L5/00

CPC classification number: H04W72/042 ,  H04L1/0046 ,  H04L1/0072 ,  H04L5/0053 ,  H04W72/085

Abstract: Network identifiers used for control information are typically correlated in time. This correlation in time may be leveraged to reduce the control space searched, and thus the number of blind decodes performed by a UE during blind decoding of neighbor cell control information. An apparatus that exploits this correlation in time decodes a control channel transmitted by a neighbor cell to obtain a current network identifier used to perform an operation on the control channel transmission, compares the current network identifier with a set of network identifiers obtained from previously decoded control channels transmitted from the neighbor cell, and determines if the decoded control channel is valid based at least in part on the comparison. The set of network identifiers may be a list of network identifiers, or a range of network identifiers. The set of network identifiers may further include aggregation level information and frequency of occurrence information.

Abstract translation: 用于控制信息的网络标识符通常在时间上相关。 可以利用这种在时间上的相关性来减少搜索到的控制空间，并且因此减少在相邻小区控制信息的盲解码期间由UE执行的盲解码的数量。 利用这种相关性的装置对由相邻小区发送的控制信道进行解码以获得用于对控制信道传输执行操作的当前网络标识符，将当前网络标识符与从先前解码的控制获得的一组网络标识符进行比较 从相邻小区发送的信道，并且至少部分地基于比较来确定解码的控制信道是否有效。 该组网络标识符可以是网络标识符的列表或网络标识符的范围。 所述网络标识符集合还可以包括聚合级别信息和出现信息的频率。

公开(公告)号：US20160269144A1

公开(公告)日：2016-09-15

申请号：US15158094

申请日：2016-05-18

Applicant: QUALCOMM Incorporated

Inventor： Alan Barbieri ,  Tao Luo

IPC: H04L1/00 ,  H03M13/37 ,  H04J11/00

CPC classification number: H04L1/005 ,  H03M13/3746 ,  H03M13/3784 ,  H04J11/004 ,  H04J11/0043 ,  H04J11/005 ,  H04L1/0048 ,  H04L5/0032 ,  H04W24/02 ,  H04W84/045

Abstract: Real-time selection of interference cancellation schemes based on transmission parameters and amount of resource overlap between the desired payload and the interfering payload. Codeword level interference cancellation may be performed where the signal quality of the interfering signal indicates that the interfering payload will be decoded correctly. When performed, codeword level interference cancellation may be monitored to determine if decoding the interfering payload is converging. Other interference cancellation schemes may be selected based on the signal quality of the interfering signal or non-converging decode of the interfering payload. The number of iterations for iterative decoding in codeword level interference cancellation may be dynamically selected. The decoder output (e.g., soft bits) may be used to perform interference cancellations before the decoder is fully converged. Iterative decoding may be performed in multiple passes and soft decision output form one pass may be used to initialize the decoder for a subsequent pass.

Abstract translation: 基于传输参数和所需有效载荷与干扰有效载荷之间的资源重叠量的干扰消除方案的实时选择。 可以在干扰信号的信号质量指示干扰有效负载将被正确解码的情况下执行码字级干扰消除。 当执行时，可以监视码字电平干扰消除以确定对干扰有效载荷的解码是否正在收敛。 可以基于干扰信号的信号质量或干扰有效负载的非收敛解码来选择其他干扰消除方案。 可以动态地选择码字电平干扰消除中迭代解码的迭代次数。 解码器输出（例如，软比特）可以在解码器完全收敛之前用于执行干扰消除。 可以在多遍中执行迭代解码，并且可以使用一次通过的软判决输出来初始化用于后续通过的解码器。

公开(公告)号：US20130121272A1

公开(公告)日：2013-05-16

申请号：US13675949

申请日：2012-11-13

Applicant: Qualcomm Incorporated

Inventor： Alan Barbieri ,  Yi Huang ,  Peter Gaal

IPC: H04W72/08

CPC classification number: H04W72/08 ,  H04W16/14

Abstract: Techniques are provided for dynamic frequency selection (DFS). For example, there is provided a distributed DFS method that may involve receiving a measurement report from each associated mobile entity, the measurement report comprising channel quality metrics for each mobile entity on corresponding frequency channels, the frequency channels comprising at least one unlicensed channel. The method may involve determining link quality metrics for the frequency channels based at least in part on the channel quality metrics in the measurement report. The method may involve selecting at least one operating channel corresponding to a maximum link quality metric among the link quality metrics. The method may involve implementing a time delay before starting operation on the selected at least one operating channel.

Abstract translation: 为动态频率选择（DFS）提供了技术。 例如，提供了一种分布式DFS方法，其可以涉及从每个相关联的移动实体接收测量报告，所述测量报告包括对应频率信道上的每个移动实体的信道质量度量，所述频率信道包括至少一个未许可的信道。 该方法可以包括至少部分地基于测量报告中的信道质量度量来确定用于频率信道的链路质量度量。 该方法可以包括在链路质量度量中选择对应于最大链路质量度量的至少一个操作信道。 该方法可以包括在所选择的至少一个操作信道上开始操作之前实现时间延迟。

公开(公告)号：US10320550B2

公开(公告)日：2019-06-11

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 ,  H04L1/00 ,  H04W24/08 ,  H04W24/00 ,  H04W28/16

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).

公开(公告)号：US09949248B2

公开(公告)日：2018-04-17

申请号：US14448157

申请日：2014-07-31

Applicant: QUALCOMM Incorporated

Inventor： Alan Barbieri ,  Tao Luo

IPC: H04W72/04 ,  H04L1/00

CPC classification number: H04W72/042 ,  H04L1/0052

Abstract: Methods and apparatus are disclosed for improving blind-decoding and interference suppression associated with interference from non-serving cells in a wireless network, specifically, performing interference suppression on the non-serving cell control channel. Various aspect employ network-assisted blind-decoding of non-serving cell signals at UEs through the coordination, communication, and use of communication restriction conditions. Network aspects may restrict certain communications between eNBs and served UEs, and communicate the restrictions to non-served UE. The non-served UEs can then leverage the restrictions for more efficient blind-decoding of interfering eNB signals and interference cancellation of interfering eNB signals.