公开(公告)号：US09037134B2

公开(公告)日：2015-05-19

申请号：US12433417

申请日：2009-04-30

申请人： Matthew S. Grob ,  Mehmet Yavuz ,  Sanjiv Nanda

发明人： Matthew S. Grob ,  Mehmet Yavuz ,  Sanjiv Nanda

IPC分类号： H04W4/00 ,  H04W76/02 ,  H04W36/04 ,  H04W88/04 ,  H04W36/30 ,  H04W36/32 ,  H04W64/00 ,  H04W84/04

CPC分类号： H04W36/30 ,  H04W24/08 ,  H04W36/0022 ,  H04W36/04 ,  H04W36/32 ,  H04W64/00 ,  H04W84/045 ,  H04W88/04

摘要： Aspects describe communications environments in which femtocell capability is provided to devices within the communications network. A non-femto enabled device and/or a femto enabled device can communicate with a femto enabled device in the same geographical area for femto-enabled peer-to-peer communication. Two non-femto enabled devices can be provided femto functionality through utilization of a femto enabled device, which operates as a hub between the two devices. Other aspects relate to enhanced position determination, adaptive coverage enhancement, local mobile networks, open access femtocells without a backhaul, and local broadcast of media though utilization of femto enabled devices.

摘要翻译： 方面描述了将毫微微小区能力提供给通信网络内的设备的通信环境。 非毫微微功能的设备和/或毫微微功能设备可以在相同的地理区域中与毫微微功能的对等通信进行通信。 可以通过利用作为两个设备之间的集线器的毫微微功能设备来提供两个非毫微微功能的设备。 其他方面涉及增强的位置确定，自适应覆盖增强，本地移动网络，没有回程的开放接入毫微微小区以及通过使用毫微微功能设备的媒体的本地广播。

公开(公告)号：US09008002B2

公开(公告)日：2015-04-14

申请号：US11833925

申请日：2007-08-03

申请人： Sanjiv Nanda ,  Ashwin Sampath

发明人： Sanjiv Nanda ,  Ashwin Sampath

IPC分类号： H04W4/00 ,  H04J3/06 ,  H04W72/02 ,  H04W72/08

CPC分类号： H04W72/1231 ,  H04W72/02 ,  H04W72/082

摘要： A wireless media access control supports asynchronous communication and overlapping transmissions. Here, a wireless node may determine whether to request or schedule a transmission based on control messages it receives from neighboring nodes. In some implementations a scheduled transmission may be divided up into several segments so that a transmitting node may receive and transmit control messages between segments. In some implementations a monitoring period is defined after a scheduled transmission period to enable the transmitting node to acquire control information that may otherwise have been transmitted during the scheduled transmission period. In some implementations data and control information are transmitted over different frequency division multiplexed channels to enable concurrent transmission of the data and control information.

摘要翻译： 无线媒体访问控制支持异步通信和重叠传输。 这里，无线节点可以基于从相邻节点接收到的控制消息来确定是否请求或调度传输。 在一些实施方式中，调度的传输可以被划分成若干段，使得发射节点可以在段之间接收和发送控制消息。 在一些实施方式中，在调度的传输周期之后定义监视周期，以使得发送节点获取否则可能在调度的传输周期期间已经发送的控制信息。 在一些实施方式中，数据和控制信息通过不同的频分多路复用通道传输，以实现数据和控制信息的并发传输。

公开(公告)号：US08938238B2

公开(公告)日：2015-01-20

申请号：US12917627

申请日：2010-11-02

申请人： Mehmet Yavuz ,  Leonard Henry Grokop ,  Chirag Sureshbhai Patel ,  Sanjiv Nanda

发明人： Mehmet Yavuz ,  Leonard Henry Grokop ,  Chirag Sureshbhai Patel ,  Sanjiv Nanda

IPC分类号： H04W36/00 ,  H04W52/14 ,  H04W52/24 ,  H04W84/04 ,  H04W52/40

CPC分类号： H04W48/04 ,  H04W36/0072 ,  H04W52/143 ,  H04W52/244 ,  H04W52/245 ,  H04W52/246 ,  H04W52/40 ,  H04W84/045 ,  H04W88/08

摘要： Transmissions by a first access point (e.g., a femto cell) are restricted upon detecting an access terminal in the vicinity of the first access point in the event the access terminal is communicating with a second access point (e.g., a macro cell). Upon detection of such an access terminal, the access terminal restricts transmission (e.g., beacon transmission) on a downlink carrier frequency on which the access terminal is actively receiving information from the second access point. This restriction of transmission by the access point may involve, for example, temporarily reducing transmit power, reducing the periodicity of transmission, or ceasing transmission.

摘要翻译： 在接入终端与第二接入点（例如，宏小区）进行通信的情况下，在检测到第一接入点附近的接入终端时，第一接入点（例如，毫微微小区）的传输受到限制。 在检测到这样的接入终端时，接入终端限制在接入终端主动接收来自第二接入点的信息的下行链路载波频率上的传输（例如信标发送）。 接入点的这种传输限制可能涉及例如临时降低发射功率，减少传输周期或停止传输。

公开(公告)号：US08909279B2

公开(公告)日：2014-12-09

申请号：US12187304

申请日：2008-08-06

申请人： Mehmet Yavuz ,  Sanjiv Nanda ,  Mostafa S. El-Khamy

发明人： Mehmet Yavuz ,  Sanjiv Nanda ,  Mostafa S. El-Khamy

IPC分类号： H04B7/00 ,  H04W52/40 ,  H04W52/24 ,  H04W16/16 ,  H04W52/14 ,  H04W36/04 ,  H04W52/36

CPC分类号： H04W52/40 ,  H04W16/16 ,  H04W36/04 ,  H04W52/143 ,  H04W52/244 ,  H04W52/245 ,  H04W52/367

摘要： Transmit power (e.g., maximum transmit power) may be defined based on the maximum received signal strength allowed by a receiver and a minimum coupling loss from a transmitting node to a receiver. Transmit power may be defined for an access node (e.g., a femto node) such that a corresponding outage created in a cell (e.g., a macro cell) is limited while still providing an acceptable level of coverage for access terminals associated with the access node. An access node may autonomously adjust its transmit power based on channel measurement and a defined coverage hole to mitigate interference. Transmit power may be defined based on channel quality. Transmit power may be defined based on a signal-to-noise ratio at an access terminal. The transmit power of neighboring access nodes also may be controlled by inter-access node signaling.

摘要翻译： 可以基于接收机允许的最大接收信号强度和从发射节点到接收机的最小耦合损耗来定义发射功率（例如，最大发射功率）。 可以为接入节点（例如，毫微微节点）定义发射功率，使得在小区（例如，宏小区）中创建的相应中断受到限制，同时仍然为与接入节点相关联的接入终端提供可接受的覆盖水平 。 接入节点可以基于信道测量和定义的覆盖孔来自主地调整其发射功率以减轻干扰。 发射功率可以基于信道质量来定义。 可以基于接入终端的信噪比来定义发射功率。 相邻接入节点的发射功率也可以由接入间节点信令来控制。

公开(公告)号：US08903440B2

公开(公告)日：2014-12-02

申请号：US12882945

申请日：2010-09-15

申请人： Sanjiv Nanda ,  J. Rodney Walton

发明人： Sanjiv Nanda ,  J. Rodney Walton

IPC分类号： H04B7/00 ,  H04W72/12 ,  H04W84/18

CPC分类号： H04W72/1278 ,  H04W72/1231 ,  H04W84/18

摘要： An ad hoc network with distributed hierarchical scheduling is disclosed. In one aspect, stations in a network mesh detect interfering neighbor stations and form interference lists. Stations transmit their interference lists. Scheduling stations schedule allocations for child stations in response to interference lists, received remote allocations, or a combination thereof. Coordination messages are transmitted including frame structure, allocations, and interference lists, among others. In another aspect, an ad hoc mesh network may be organized into a tree topology. In an example wireless backhaul network, this matches traffic flow. Distributed, hierarchical scheduling is provided where parents schedule communication with children while respecting already scheduled transmissions to/from interferers and to/from interferers of their respective children. Procedures to construct interference constraints for distributed, hierarchical scheduling are described, resulting in efficient scheduling and reuse in an ad hoc wireless network, without centralized scheduling. Various other aspects are also disclosed.

摘要翻译： 公开了一种具有分布式分层调度的自组织网络。 在一个方面，网络网络中的站检测干扰相邻站并形成干扰列表。 车站发送干扰列表。 调度站响应于干扰列表，接收的远程分配或其组合来调度子站的分配。 发送协调消息，包括帧结构，分配和干扰列表等。 在另一方面，可以将自组织网状网络组织成树形拓扑。 在无线回程网络的示例中，这匹配了流量。 提供了分布式的分层调度，其中父母调度与孩子的通信，同时尊重已经调度的传输到/来自干扰源和/或来自其相应子项的干扰。 描述了为分布式分层调度构建干扰约束的过程，从而在ad hoc无线网络中进行有效的调度和重用，而无需集中调度。 还公开了各种其它方面。

公开(公告)号：US08867456B2

公开(公告)日：2014-10-21

申请号：US12276932

申请日：2008-11-24

申请人： Mehmet Yavuz ,  Peter J. Black ,  Sanjiv Nanda

发明人： Mehmet Yavuz ,  Peter J. Black ,  Sanjiv Nanda

IPC分类号： H04W4/00 ,  H04J3/06 ,  H04W52/20 ,  H04W52/14 ,  H04W52/24 ,  H04W52/32 ,  H04W56/00 ,  H04W28/04 ,  H04W52/44 ,  H04W52/38

CPC分类号： H04W72/082 ,  H04L1/1825 ,  H04L5/0092 ,  H04W28/04 ,  H04W52/143 ,  H04W52/20 ,  H04W52/244 ,  H04W52/32 ,  H04W52/322 ,  H04W52/325 ,  H04W52/38 ,  H04W52/44 ,  H04W56/001 ,  H04W56/0015 ,  H04W56/0025 ,  H04W74/04

摘要： Interference that occurs during wireless communication may be managed by hybrid time reuse. A method, apparatus amend medium of communication determines one or more time reuse patterns of respective one or more unplanned access points. A second time reuse pattern that is less interfering with the one or more time reuse patterns is selected. Signals are transmitted according to the second time reuse pattern from a second unplanned access point to an associated access terminal.

摘要翻译： 在无线通信期间发生的干扰可以通过混合时间重用来管理。 一种修改通信介质的装置的方法确定相应的一个或多个非计划接入点的一个或多个时间重用模式。 选择较少干扰一个或多个时间重用模式的第二次重用模式。 信号根据第二次重用模式从第二计划外接入点发送到相关接入终端。

公开(公告)号：US08792441B2

公开(公告)日：2014-07-29

申请号：US13283510

申请日：2011-10-27

申请人： Jay Rodney Walton ,  Sanjiv Nanda

发明人： Jay Rodney Walton ,  Sanjiv Nanda

IPC分类号： H04W72/04 ,  H04W74/04 ,  H04W74/08 ,  H04W72/12 ,  H04W84/18 ,  H04W16/28

CPC分类号： H04W74/0808 ,  H04W16/28 ,  H04W72/1231 ,  H04W84/18

摘要： Mesh Network Access Points (APs) points, including gateways and routers, are deployed over a geographic area. The APs monitor the communication channel for other carriers and transmit accordingly. The APs selectively co-transmit when other carriers are sensed, if the efficiency of the mesh network will improve. APs select a transmission rate based on observed carrier-to-interference ratios. APs use directional antennas to increase carrier-to-interference ratios and spectral efficiency. AP transmit schedules are adaptable and adjusted according to observed carrier-to-interference measurements.

摘要翻译： 网络接入点（AP）点，包括网关和路由器，部署在一个地理区域。 AP监控其他运营商的通信信道，并进行相应的传输。 当其他载波被感测到时，如果网状网络的效率将提高，则选择性地共同发射AP。 AP基于观察到的载波干扰比选择传输速率。 AP使用定向天线来增加载波干扰比和频谱效率。 AP发射时间表可以根据观测到的载波干扰测量进行适应性调整。

公开(公告)号：US08761060B2

公开(公告)日：2014-06-24

申请号：US13024893

申请日：2011-02-10

申请人： Chirag Sureshbhai Patel ,  Mehmet Yavuz ,  Leonard Henry Grokop ,  Vinay Chande ,  Sanjiv Nanda ,  Farhad Meshkati ,  Sumeeth Nagaraja

发明人： Chirag Sureshbhai Patel ,  Mehmet Yavuz ,  Leonard Henry Grokop ,  Vinay Chande ,  Sanjiv Nanda ,  Farhad Meshkati ,  Sumeeth Nagaraja

IPC分类号： H04B7/00 ,  H04W52/32

CPC分类号： H04W52/325 ,  H04W28/18 ,  H04W52/143 ,  H04W52/16 ,  H04W52/242 ,  H04W52/243 ,  H04W52/247 ,  H04W52/281 ,  H04W52/50 ,  H04W72/082 ,  H04W84/045

摘要： Transmit power for an access point is controlled based on information received by the access point. For example, an access point may employ one or more algorithms that use messages received from nearby access terminals to maintain an acceptable tradeoff between providing an adequate coverage area for access point transmissions and mitigating interference that these transmissions cause at nearby access terminals. Here, the access point may employ a network listen-based algorithm upon initialization of the access terminal to provide preliminary transmit power control until sufficient information is collected for another transmit power control algorithm (e.g., an access terminal assisted algorithm). Also, the access terminal may employ an active access terminal protection scheme to mitigate interference the access point may otherwise cause to a nearby access terminal that is in active communication with another access point.

摘要翻译： 基于接入点接收的信息来控制接入点的发射功率。 例如，接入点可以采用使用从附近的接入终端接收的消息的一个或多个算法来维持在为接入点传输提供足够的覆盖区域和减轻这些传输在附近的接入终端处造成的干扰的可接受的折衷。 这里，接入点可以在接入终端初始化时采用基于网络侦听的算法，以提供初始的发射功率控制，直到为另一发射功率控制算法（例如，接入终端辅助算法）收集足够的信息。 此外，接入终端可以采用有源接入终端保护方案来减轻接入点否则可能导致与另一接入点主动通信的附近接入终端的干扰。

公开(公告)号：US08665795B2

公开(公告)日：2014-03-04

申请号：US13277450

申请日：2011-10-20

申请人： John W Ketchum ,  Sanjiv Nanda ,  Arnaud Meylan ,  Shravan K Surineni

发明人： John W Ketchum ,  Sanjiv Nanda ,  Arnaud Meylan ,  Shravan K Surineni

IPC分类号： H04Q7/00

CPC分类号： H04B7/0643 ,  H04B7/0421 ,  H04B7/0617 ,  H04B7/0634 ,  H04B7/0636 ,  H04L25/0204 ,  H04L25/0228 ,  H04L25/03343 ,  H04L2025/03414 ,  H04L2025/03426 ,  H04L2025/03802

摘要： Techniques to support beamforming for stations in a wireless network are described. A station may support beamforming with implicit or explicit feedback by having capabilities to transmit and receive sounding frames, responding to training request by sending a sounding frame, and responding to request for explicit feedback. In one explicit beamforming embodiment, the station may send a first frame with an explicit feedback request and may also send a Null Data Packet (NDP) having at least one training field but no data field. The station may receive a second frame with explicit feedback, which may be derived based on the NDP. The station may derive steering information based on explicit feedback and may then send a steered frame with beamforming based on steering information. Other aspects, embodiments, and features are also claimed and described.

摘要翻译： 描述了支持无线网络中的站的波束成形的技术。 站可以通过具有发送和接收探测帧的能力来支持具有隐式或显式反馈的波束成形，通过发送探测帧来响应训练请求，以及响应对显式反馈的请求。 在一个明确的波束形成实施例中，站可以发送具有显式反馈请求的第一帧，并且还可以发送具有至少一个训练场但不包括数据字段的空数据分组（NDP）。 该站可以接收具有显式反馈的第二帧，其可以基于NDP导出。 该站可以基于显式反馈导出转向信息，然后可以基于转向信息发送具有波束成形的转向帧。 还要求和描述其它方面，实施例和特征。

公开(公告)号：US08611822B2

公开(公告)日：2013-12-17

申请号：US12502084

申请日：2009-07-13

申请人： Mehmet Yavuz ,  Sanjiv Nanda ,  Vansh Pal Singh Makh

发明人： Mehmet Yavuz ,  Sanjiv Nanda ,  Vansh Pal Singh Makh

IPC分类号： H04B1/00

CPC分类号： H04W72/085 ,  H04W72/0406 ,  H04W84/045

摘要： Systems and methods for avoiding interference signals sent by a femto node in a wireless communication system are described herein. In one embodiment, the method comprises establishing a communication link between a first transceiver and a base station. The base station is configured to provide wireless communication coverage within a first area. The method further comprises detecting by the first transceiver a femto signal generated by the femto node. The femto node is configured to provide wireless communication coverage within a second area to at least a second transceiver. The second transceiver is different from the first transceiver. The second area is smaller than the first area. The method further comprises identifying information indicative of a signal strength of the femto signal. The method further comprises transmitting a first message in response to detecting the femto signal, the first message comprising information identifying the femto node and the information indicative of the signal strength of the femto signal to the base station over a first frequency carrier. The method further comprises receiving a second message from the base station. The second message comprises information indicative of an instruction to communicate over a second carrier frequency. The method further comprises communicating with the base station over a second frequency carrier in response to the second message.

摘要翻译： 本文描述了用于避免毫微微节点在无线通信系统中发送的干扰信号的系统和方法。 在一个实施例中，该方法包括在第一收发器和基站之间建立通信链路。 基站被配置为在第一区域内提供无线通信覆盖。 该方法还包括由第一收发机检测由毫微微节点产生的毫微微信号。 毫微微节点被配置为在至少第二收发器的第二区域内提供无线通信覆盖。 第二收发器与第一收发器不同。 第二个区域比第一个区域小。 该方法还包括识别指示毫微微信号的信号强度的信息。 所述方法还包括响应于检测到所述毫微微信号而发送第一消息，所述第一消息包括识别所述毫微微节点的信息和指示所述毫微微信号的信号在所述基站上的信号在第一频率载波上的信息。 该方法还包括从基站接收第二消息。 第二消息包括指示通过第二载波频率进行通信的指示的信息。 该方法还包括响应于第二消息通过第二频率载波与基站进行通信。