公开(公告)号：US20100085917A1

公开(公告)日：2010-04-08

申请号：US12568269

申请日：2009-09-28

申请人： Alexei Y. Gorokhov ,  Siddhartha Mallik ,  Alan Barbieri ,  Jilei Hou

发明人： Alexei Y. Gorokhov ,  Siddhartha Mallik ,  Alan Barbieri ,  Jilei Hou

IPC分类号： H04W40/00 ,  H04L27/28

CPC分类号： H04W24/02 ,  H04L5/0023 ,  H04L5/0035 ,  H04L5/006 ,  H04L5/0073 ,  H04L5/0091

摘要： Systems and methodologies are described that facilitate cooperation strategy selection for a network multiple-in-multiple-out (N-MIMO) communication system. As described herein, one or more nodes in a communication system capable of N-MIMO communication can calculate marginal utilities, projected per-user rates, and/or other parameters corresponding to respective associated users. Based on these calculations, respective network nodes can perform user scheduling and selection, cell scheduling and selection, selection of a cooperation strategy (e.g., coordinated silencing, joint transmission, coordinated beamforming, etc.), and/or other operations to provide cooperative communication for respective users. As further described herein, projected rate calculation for a given user can be adjusted based on processing or channel implementation loss associated with the user, interference nulling capability of the user, or other factors. As additionally described herein, these and/or other parameters can be fed back by respective users to a serving network node and/or mandated via system performance requirements.

摘要翻译： 描述了促进网络多输入多输出（N-MIMO）通信系统的协作策略选择的系统和方法。 如这里所描述的，能够进行N-MIMO通信的通信系统中的一个或多个节点可以计算边际效用，预计的每用户速率和/或对应于各个相关用户的其他参数。 基于这些计算，各个网络节点可以执行用户调度和选择，小区调度和选择，合作策略的选择（例如，协调消隐，联合传输，协调波束形成等）和/或提供协作通信的其他操作 为各个用户。 如本文进一步描述的，可以基于与用户相关联的处理或信道实现损失，用户的干扰归零能力或其他因素来调整给定用户的预计速率计算。 如本文另外描述的，这些和/或其他参数可以由相应的用户反馈到服务网络节点和/或通过系统性能要求强制。

公开(公告)号：US20090325626A1

公开(公告)日：2009-12-31

申请号：US12490086

申请日：2009-06-23

申请人： Ravi Palanki ,  Alexei Y. Gorokhov

发明人： Ravi Palanki ,  Alexei Y. Gorokhov

IPC分类号： H04B7/005

CPC分类号： H04W72/082 ,  H04L5/0007 ,  H04L5/003 ,  H04L5/0073 ,  H04L27/2601 ,  H04W24/02 ,  H04W52/244

摘要： Techniques for communicating on multiple carriers in a wireless communication network are described. In an aspect, different transmit power levels may be used for different carriers to mitigate interference. A first base station may be assigned one or more carriers among multiple carriers available for communication. A second base station may be assigned one or more carriers not assigned to the first base station. Each base station may communicate on each assigned carrier at a first (e.g., full) transmit power level and may communicate on each unassigned carrier at a second (e.g., lower) transmit power level lower. The first and second base stations may belong in different power classes or support different association types. In another aspect, control information may be sent on a designated carrier to support communication on multiple carriers. In yet another aspect, a base station may broadcast bar information indicating the status of carriers.

摘要翻译： 描述了用于在无线通信网络中的多个载波上进行通信的技术。 在一个方面，不同的发射功率电平可以用于不同的载波以减轻干扰。 可以在可用于通信的多个载波中为第一基站分配一个或多个载波。 可以向第二基站分配未分配给第一基站的一个或多个载波。 每个基站可以在每个分配的载波上以第一（例如，全）发射功率电平进行通信，并且可以在较低的第二（例如更低）的发射功率电平的每个未分配的载波上进行通信。 第一和第二基站可以属于不同的功率等级或支持不同的关联类型。 在另一方面，可以在指定的载波上发送控制信息，以支持在多个载波上的通信。 在另一方面，基站可以广播指示载波状态的条信息。

公开(公告)号：US20090245331A1

公开(公告)日：2009-10-01

申请号：US12411258

申请日：2009-03-25

申请人： Ravi Palanki ,  Alexei Y. Gorokhov

发明人： Ravi Palanki ,  Alexei Y. Gorokhov

IPC分类号： H04B1/707 ,  H04L27/28 ,  H04L27/00

CPC分类号： H04W72/082 ,  H04L5/0007 ,  H04L5/0053 ,  H04L5/0091 ,  H04L27/10 ,  H04L27/2647 ,  H04L27/30 ,  H04W52/243 ,  H04W52/245 ,  H04W52/281 ,  H04W52/32 ,  H04W72/0426

摘要： Techniques for sending signaling messages in a wireless communication network are described. In an aspect, a signaling message (e.g., a reduce interference request) may be sent by mapping it to at least one specific subcarrier among a set of subcarriers reserved for sending the signaling message. The at least one subcarrier may be selected based on the message value. A signal may be sent on the at least one subcarrier in multiple symbol periods to convey the signaling message. In another aspect, a reduce interference request may be sent based on an orthogonal resource among orthogonal resources available for sending reduce interference requests. In one design, an orthogonal sequence may be selected based on the request and may be spread across a resource segment. In another design, the reduce interference request may be processed to obtain modulation symbols, and each modulation symbol may be spread across multiple subcarriers in one symbol period.

摘要翻译： 描述了在无线通信网络中发送信令消息的技术。 在一方面，信令消息（例如，减少干扰请求）可以通过将信令消息映射到保留用于发送信令消息的一组子载波中的至少一个特定子载波来发送。 可以基于消息值来选择至少一个子载波。 可以在多个符号周期中的至少一个子载波上发送信号以传送信令消息。 在另一方面，可以基于可用于发送减少干扰请求的正交资源之间的正交资源来发送减少干扰请求。 在一种设计中，可以基于请求来选择正交序列，并且可以跨越资源段进行扩展。 在另一种设计中，可以处理减少干扰请求以获得调制符号，并且每个调制符号可以在一个符号周期内跨多个子载波进行扩展。

公开(公告)号：US09974065B2

公开(公告)日：2018-05-15

申请号：US12484624

申请日：2009-06-15

申请人： Alexei Y. Gorokhov ,  Ravi Palanki ,  Aamod D. Khandekar

发明人： Alexei Y. Gorokhov ,  Ravi Palanki ,  Aamod D. Khandekar

IPC分类号： H04W28/04 ,  H04W72/04 ,  H04W16/14 ,  H04W72/08

CPC分类号： H04W72/042 ,  H04W16/14 ,  H04W72/0426 ,  H04W72/082

摘要： Systems and methodologies are described that facilitate requesting blanking over control resources from one or more interfering eNBs or devices. An eNB, such as a macrocell, femtocell or picocell eNB, can transmit a downlink control blanking message to a UE directing the UE to perform blanking (e.g., for uplink control resources) or request the blanking from the interfering eNBs or devices (e.g., for downlink control resources). The downlink control blanking message can specify the desired control resources and/or information to determine the control resources. Thus, dynamic control blanking is provided such that blanking is requested to mitigate interference over control resources for the small scale eNB. The small scale eNB can subsequently communicate control data to the UE over the control resources; the control data can include a resource blanking message that similarly directs the UE to request blanking of general data resource from the interfering eNBs or devices.

公开(公告)号：US09094074B2

公开(公告)日：2015-07-28

申请号：US12825179

申请日：2010-06-28

申请人： Alexei Y. Gorokhov ,  Juan Montojo ,  Wanshi Chen

发明人： Alexei Y. Gorokhov ,  Juan Montojo ,  Wanshi Chen

IPC分类号： H03K9/00 ,  H04B7/06 ,  H04B7/04

CPC分类号： H04B7/063 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/0684 ,  H04B7/0691

摘要： A method, an apparatus, and a computer program product for wireless communication are provided in which downlink control information (DCI) including a total number of available antenna ports, a rank indicator for a user equipment (UE), and one or more port assignment bits is received, a subset of the total number of available antenna ports that are assigned to the UE based on at least one of: the rank indicator or the one or more port assignment bits is determined, and demodulation based on reference signals corresponding to the set of assigned antenna ports is performed.

摘要翻译： 提供了一种用于无线通信的方法，装置和计算机程序产品，其中包括可用天线端口的总数，用户设备（UE）的秩指示符和一个或多个端口分配的下行链路控制信息（DCI） 基于以下中的至少一个被分配给UE的可用天线端口总数的一个子集：秩指示符或一个或多个端口分配比特被确定，并且基于对应于 执行一组分配的天线端口。

公开(公告)号：US09026164B2

公开(公告)日：2015-05-05

申请号：US12578066

申请日：2009-10-13

申请人： Alexei Y. Gorokhov ,  Aamod D. Khandekar ,  Ravi Palanki

发明人： Alexei Y. Gorokhov ,  Aamod D. Khandekar ,  Ravi Palanki

IPC分类号： H04B7/00 ,  H04W52/24 ,  H04W52/32

CPC分类号： H04W52/244 ,  H04J11/0023 ,  H04W52/242 ,  H04W52/325

摘要： Techniques for selectively transmitting a power decision pilot are described. The power decision pilot may be indicative of the transmit power to use for data transmission in a future time interval. The power decision pilot may be transmitted when sufficiently beneficial for channel quality estimation or omitted otherwise. Whether or not to transmit the power decision pilot may be determined based on system type (e.g., heterogeneous or homogeneous system), the presence or absence of a dominant interferer, whether a reduce interference request is received, etc. For example, a base station may transmit a power decision pilot if it causes high interference to a non-served terminal, if a served terminal observes high interference from a neighbor base station, if the base station receives a reduce interference request from a non-served terminal, etc. The power decision pilot may be transmitted if a determination is made to transmit the pilot or omitted otherwise.

摘要翻译： 描述用于选择性地发射功率决策导频的技术。 功率决定导频可以指示在将来的时间间隔中用于数据传输的发射功率。 如果对信道质量估计有足够的有利的话，则功率决定导频可以被传输，否则否则省略。 可以基于系统类型（例如，异构或均匀系统），显着干扰源的存在或不存在，是否接收到减少干扰请求等来确定是否发送功率决策导频。例如，基站 如果服务终端观察到来自相邻基站的高干扰，如果基站从非服务终端接收到减少干扰请求等，则它可以对未服务终端造成高干扰，可以发送功率决策导频。 如果确定发送导频，否则将发送功率决定导频。

公开(公告)号：US08938247B2

公开(公告)日：2015-01-20

申请号：US12764891

申请日：2010-04-21

申请人： Alexei Y. Gorokhov ,  Juan Montojo ,  Wanshi Chen

发明人： Alexei Y. Gorokhov ,  Juan Montojo ,  Wanshi Chen

IPC分类号： H04W72/04 ,  H04W88/06 ,  H04B7/00 ,  H04L5/00 ,  H04B7/02 ,  H04W52/32 ,  H04W52/40

CPC分类号： H04L5/0048 ,  H04B7/024 ,  H04L5/0035 ,  H04L5/0091 ,  H04W52/325 ,  H04W52/40

摘要： Systems and methodologies are described that facilitate configuring a sounding reference signal transmission in a wireless communication environment. A UE can employ coordinated multi-point transmission and/or reception such that multiple cells collaborate to transmit data to the UE and/or receive data from the UE. To support the coordinated multi-point transmission and/or reception, the UE can transmit a sounding reference signal that is configured to enable reliable reception of the sounding reference signal by members of a cooperating set. In addition, configuration of the sounding reference signal can be coordinated to enable more efficient transmission and utilization of the sounding reference signal. Configuration of the sounding reference signal can be based upon information exchanged between the multiple cells. Moreover, the multiple cells can coordinate to set and control a transmit power of the sounding reference signal.

摘要翻译： 描述了有助于在无线通信环境中配置探测参考信号传输的系统和方法。 UE可以采用协调的多点传输和/或接收，使得多个小区协作来向UE发送数据和/或从UE接收数据。 为了支持协调的多点发送和/或接收，UE可以发送探测参考信号，该参考信号被配置为能够通过协作组的成员可靠地接收探测参考信号。 此外，可以协调探测参考信号的配置，以便能够更有效地传输和利用探测参考信号。 探测参考信号的配置可以基于在多个小区之间交换的信息。 此外，多个小区可以协调以设置和控制探测参考信号的发射功率。

公开(公告)号：US08934395B2

公开(公告)日：2015-01-13

申请号：US12578056

申请日：2009-10-13

申请人： Alexei Y. Gorokhov ,  Ravi Palanki

发明人： Alexei Y. Gorokhov ,  Ravi Palanki

IPC分类号： H04J1/10 ,  H04L5/00 ,  H04L1/00 ,  H04L1/18

CPC分类号： H04L5/006 ,  H04L1/0002 ,  H04L1/0025 ,  H04L1/0026 ,  H04L1/1887 ,  H04L5/0023 ,  H04L5/0035 ,  H04L5/0073 ,  H04L5/0091 ,  H04L2001/0097

摘要： Systems and methodologies are described herein that facilitate generation and processing of control signaling to support uplink network multiple-in-multiple-out (N-MIMO) communication in a wireless communication system. As described herein, respective network nodes associated with an uplink N-MIMO framework can generate channel state information (CSI) corresponding to an uplink channel from a designated network user to the respective nodes. Generated CSI can subsequently be communicated to an uplink anchor node for the network user in order to facilitate rate assignment, scheduling, and/or other operations with respect to the network user. As described herein, CSI generated and reported by respective cells can include channel profiles, carrier/interference profiles, estimated supported uplink rates, or the like. As additionally described herein, supplemental information such as observed interference levels, demodulation indicators, or the like can be communicated to an anchor node and utilized in rate assignment and/or scheduling.

摘要翻译： 本文描述了便于生成和处理控制信令以在无线通信系统中支持上行链路多输入多输出（N-MIMO）通信的系统和方法。 如本文所述，与上行链路N-MIMO框架相关联的各个网络节点可以生成对应于从指定网络用户到相应节点的上行链路信道的信道状态信息（CSI）。 随后可以将生成的CSI传送给网络用户的上行链路锚节点，以便于相对于网络用户的速率分配，调度和/或其他操作。 如这里所描述的，由各个小区生成和报告的CSI可以包括信道简档，载波/干扰简档，估计支持的上行链路速率等。 如本文另外描述的，诸如观测到的干扰电平，解调指示符等的补充信息可以被传送到锚节点并且用于速率分配和/或调度。

公开(公告)号：US08447236B2

公开(公告)日：2013-05-21

申请号：US12463734

申请日：2009-05-11

申请人： Alexei Y. Gorokhov ,  Ravi Palanki

发明人： Alexei Y. Gorokhov ,  Ravi Palanki

IPC分类号： H04B1/00

CPC分类号： H04L25/0228 ,  H04B7/0617 ,  H04B7/0619 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0031 ,  H04L1/1671 ,  H04L1/1812 ,  H04L5/0007 ,  H04L5/0048 ,  H04L5/0053 ,  H04L25/0204 ,  H04L25/03343 ,  H04L2025/03414 ,  H04L2025/03426 ,  H04L2025/03802

摘要： Techniques for transmitting and receiving data with spatial interference mitigation in a wireless communication network are described. In one design, a cell may receive precoding information from a first user equipment (UE) communicating with the cell and spatial feedback information (SFI) from a second UE not communicating with the cell. The cell may select a precoding matrix based on the precoding information and the SFI. The precoding matrix may steer a transmission toward the first UE and away from the second UE. The cell may send a reference signal based on the precoding matrix, send a resource quality information (RQI) request to the first UE, receive RQI determined by the first UE based on the reference signal, and determine a modulation and coding scheme (MCS) based on the RQI. The cell may then send a data transmission to the first UE with the precoding matrix and in accordance with the MCS.

摘要翻译： 描述了在无线通信网络中用空间干扰减轻发送和接收数据的技术。 在一种设计中，小区可以从不与小区通信的第一用户设备（UE）接收预编码信息，并从不与小区通信的第二UE接收空间反馈信息（SFI）。 小区可以基于预编码信息和SFI来选择预编码矩阵。 预编码矩阵可以引导朝向第一UE并远离第二UE的传输。 小区可以基于预编码矩阵发送参考信号，向第一UE发送资源质量信息（RQI）请求，基于参考信号接收由第一UE确定的RQI，并且确定调制和编码方案（MCS） 基于RQI。 然后，小区可以使用预编码矩阵并根据MCS向第一UE发送数据传输。

公开(公告)号：US08315660B2

公开(公告)日：2012-11-20

申请号：US11675055

申请日：2007-02-14

申请人： Petru Cristian Budianu ,  Dhananjay A. Gore ,  Alexei Y. Gorokhov

发明人： Petru Cristian Budianu ,  Dhananjay A. Gore ,  Alexei Y. Gorokhov

IPC分类号： H04B7/00

CPC分类号： H04W52/34

摘要： A method of user power offset estimation for a wireless communication system is disclosed. Dedicated pilot symbols transmitted over at least one time-frequency region for a user are received. Power offset of the user is estimated based on the received dedicated pilot symbols.

摘要翻译： 公开了一种用于无线通信系统的用户功率偏移估计的方法。 接收通过用户的至少一个时间 - 频率区域发送的专用导频符号。 基于所接收的专用导频符号来估计用户的功率偏移。