公开(公告)号：US08725083B2

公开(公告)日：2014-05-13

申请号：US12463714

申请日：2009-05-11

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

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

IPC分类号： H04B1/00 ,  H04K3/00

CPC分类号： H04W52/245 ,  H04B17/318 ,  H04B17/382 ,  H04W52/241 ,  H04W52/244 ,  H04W52/367 ,  H04W52/40

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 total received signal strength from transmitting nodes at the 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 and perform a self-calibration process.

摘要翻译： 可以基于接收机允许的最大接收信号强度和来自接收机处的发射节点的总接收信号强度来定义发射功率（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并执行自校准过程。

公开(公告)号：US08718696B2

公开(公告)日：2014-05-06

申请号：US12463705

申请日：2009-05-11

申请人： Mehmet Yavuz ,  Sanjiv Nanda ,  Yeliz Tokgoz

发明人： Mehmet Yavuz ,  Sanjiv Nanda ,  Yeliz Tokgoz

IPC分类号： H04B7/00

CPC分类号： H04W52/146 ,  H04W52/244 ,  H04W52/367

摘要： Transmit power for a user equipment (UE) is set by a Home NodeB (HNB) in response to interference at a nearby macrocell. The HNB monitors an interference level to the macrocell from a UE communicating with the HNB. An acceptable transmit power for the UE is determined by the HNB in response to the interference level. A power change indicator is transmitted from the HNB to the UE to adjust the transmit power of the UE. In some cases, the interference may be estimated from a busy indicator from the macrocell and the HNB sends a modified version of the busy indicator to the UE to adjust the transmit power of the UE. In other cases, the HNB estimates a path loss for the UE based on received signal power from the macrocell and signals a transmit power change to the UE, if needed, based on the estimated path loss.

摘要翻译： 用户设备（UE）的发射功率由家庭节点B（HNB）响应于在附近的宏小区的干扰来设置。 HNB从与HNB通信的UE监视到宏小区的干扰电平。 响应于干扰电平，由HNB确定UE的可接受发射功率。 从HNB向UE发送功率变化指示符，以调整UE的发射功率。 在一些情况下，可以从宏小区的忙指示符估计干扰，HNB向UE发送忙指示符的修改版本，以调整UE的发射功率。 在其他情况下，HNB基于来自宏小区的接收信号功率来估计UE的路径损耗，并且如果需要，则基于所估计的路径损耗来向UE发送功率变化信号。

公开(公告)号：US08711786B2

公开(公告)日：2014-04-29

申请号：US12463701

申请日：2009-05-11

申请人： Mehmet Yavuz ,  Sanjiv Nanda

发明人： Mehmet Yavuz ,  Sanjiv Nanda

IPC分类号： H04W72/12 ,  H04W84/04

CPC分类号： H04W84/045 ,  H04W24/02 ,  H04W72/02 ,  H04W72/0466 ,  H04W72/082

摘要： Downlink codes may be chosen autonomously for femtocells in a wireless communication environment. Downlink transmissions are received from Home NodeBs that are neighbors of the femtocell and macrocell base stations near the femtocell. The downlink transmissions are evaluated to recognize a first set of detected downlink codes that each have a pilot energy above a predetermined detection threshold. An optimal downlink code is selected for use in connection with serving user equipment of the femtocell. The optimal downlink code is based upon the first set of detected downlink codes and selected as a downlink code from a set of downlink codes reserved for the femtocell. The optimal downlink code may be an available downlink code with a smallest amount of detected energy or a randomly selected downlink code from the available downlink codes.

摘要翻译： 可以在无线通信环境中为毫微微小区自主选择下行链路码。 从作为毫微微小区和毫微微小区附近的宏小区基站的邻居的家庭NodeB接收下行链路传输。 评估下行链路传输以识别每个具有高于预定检测阈值的导频能量的检测下行链路码的第一组。 选择与用于毫微微小区的服务用户设备结合使用的最佳下行链路码。 最佳下行链路码基于第一组检测到的下行链路码，并从为毫微微小区保留的一组下行链路码中选择下行链路码。 最佳下行链路码可以是具有最小检测能量的可用下行链路码或来自可用下行链路码的随机选择的下行链路码。

公开(公告)号：US08700083B2

公开(公告)日：2014-04-15

申请号：US12187307

申请日：2008-08-06

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

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

IPC分类号： H04B7/00

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：US08634438B2

公开(公告)日：2014-01-21

申请号：US12625061

申请日：2009-11-24

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

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

IPC分类号： H04W4/00 ,  H04B7/216 ,  H04B3/10 ,  H04J3/14

CPC分类号： H04W48/12 ,  H04W36/04 ,  H04W48/20 ,  H04W88/085

摘要： Systems and methods for performing a handoff of an access terminal from a macro node to a femto node are disclosed. To direct handoff of the access terminal, an identity of the femto node is determined. A femto node provided may be identified by at least a difference between the offset of a first pilot signal and the offset of a second pilot signal.

摘要翻译： 公开了用于执行从宏节点到毫微微节点的接入终端切换的系统和方法。 为了指示接入终端的切换，确定毫微微节点的身份。 提供的毫微微节点可以通过至少第一导频信号的偏移与第二导频信号的偏移之间的差异来识别。

公开(公告)号：US08605579B2

公开(公告)日：2013-12-10

申请号：US11549823

申请日：2006-10-16

申请人： Santosh Abraham ,  Saishankar Nandagopalan ,  Sanjiv Nanda

发明人： Santosh Abraham ,  Saishankar Nandagopalan ,  Sanjiv Nanda

IPC分类号： H04L12/26

CPC分类号： H04L47/25 ,  H04L47/10 ,  H04L47/11 ,  H04L47/14 ,  H04L47/15 ,  H04L47/17 ,  H04L47/263 ,  H04L47/27 ,  H04L47/286 ,  H04L47/70 ,  H04L47/783 ,  H04L47/822 ,  H04L47/824 ,  H04W24/00 ,  H04W28/10 ,  H04W28/22 ,  H04W40/22 ,  H04W74/08 ,  H04W84/18

摘要： Flows admitted to a mesh node may be controlled through contention access parameters. The admitting node may determine a desired transmission opportunity duration, and a transmission opportunity frequency. Furthermore, the node may achieve the flow rate and delay bound requirements of the admitted flow based at least in part upon the desired transmission opportunity duration, and the transmission opportunity frequency. The data rate and the access frequency of the admitted node may be monitored at the physical access level. The flow rate requirement may be accomplished based at least in part upon an adjustment to the transmission opportunity duration. The delay bound requirement may be accomplished at least in part upon manipulation of the contention access parameters. The transmission opportunity duration and the access parameters may be determined by the upstream admitting nodes, which may reduce congestion near mesh portals, and accomplish increased data transfer.

摘要翻译： 可以通过争用访问参数来控制进入网状节点的流。 接纳节点可以确定期望的传输机会持续时间和传输机会频率。 此外，节点可以至少部分地基于期望的传输机会持续时间和传输机会频率来实现允许的流的流速和延迟约束要求。 可以在物理访问级别监视允许的节点的数据速率和访问频率。 流量要求可以至少部分地基于对传输机会持续时间的调整来实现。 延迟限制要求可以至少部分地基于争用访问参数的操纵来实现。 传输机会持续时间和访问参数可以由上游准入节点确定，这可以减少网格门户附近的拥塞，并且实现增加的数据传输。

公开(公告)号：US08520498B2

公开(公告)日：2013-08-27

申请号：US13461707

申请日：2012-05-01

申请人： Jay Rodney Walton ,  John Wendell Ketchum ,  Mark S. Wallace ,  Steven J. Howard ,  Sanjiv Nanda

发明人： Jay Rodney Walton ,  John Wendell Ketchum ,  Mark S. Wallace ,  Steven J. Howard ,  Sanjiv Nanda

IPC分类号： H04J11/10

CPC分类号： H04B7/0615 ,  H04B7/0413 ,  H04L27/2602

摘要： A multi-antenna transmitting entity transmits data to a single- or multi-antenna receiving entity using (1) a steered mode to direct the data transmission toward the receiving entity or (2) a pseudo-random transmit steering (PRTS) mode to randomize the effective channels observed by the data transmission across the subbands. For transmit diversity, the transmitting entity uses different pseudo-random steering vectors across the subbands but the same steering vector across a packet for each subband. The receiving entity does not need to have knowledge of the pseudo-random steering vectors or perform any special processing. For spatial spreading, the transmitting entity uses different pseudo-random steering vectors across the subbands and different steering vectors across the packet for each subband. Only the transmitting and receiving entities know the steering vectors used for data transmission. Other aspects, embodiments, and features are also claimed and disclosed.

摘要翻译： 多天线发射实体使用（1）向接收实体指导数据传输的导向模式或（2）伪随机发射转向（PRTS）模式来将数据发送到单天线或多天线接收实体，以随机化 通过子带上的数据传输观察到的有效信道。 对于发射分集，发射实体在子带上使用不同的伪随机导引向量，但是在每个子带的分组上使用相同的导向向量。 接收实体不需要具有伪随机导引向量的知识或执行任何特殊处理。 对于空间扩展，发射实体在子带上使用不同的伪随机导引向量，并且跨每个子带的分组使用不同的导向矢量。 只有发送和接收实体知道用于数据传输的导向向量。 还要求和公开其他方面，实施例和特征。

公开(公告)号：US08503374B2

公开(公告)日：2013-08-06

申请号：US11832838

申请日：2007-08-02

申请人： Gavin Bernard Horn ,  Ashwin Sampath ,  Sanjiv Nanda

发明人： Gavin Bernard Horn ,  Ashwin Sampath ,  Sanjiv Nanda

IPC分类号： H04W4/00 ,  H04J3/00

CPC分类号： H04W88/04 ,  H04W48/08 ,  H04W72/04 ,  H04W72/0406 ,  H04W72/12 ,  H04W84/047

摘要： An apparatus, method, and computer-program product are provided for wireless communication between uplink and downlink nodes via a relay. The relay is configured to simultaneously communicate with the uplink and downlink nodes on a common channel. For simultaneous communication, radio resources may be allocated to the relay to maintain orthogonality on both the uplink and downlink.

摘要翻译： 提供了一种装置，方法和计算机程序产品，用于通过继电器在上行链路和下行链路节点之间进行无线通信。 中继器被配置为在公共信道上同时与上行链路和下行链路节点进行通信。 为了同时通信，可以向中继器分配无线电资源以在上行链路和下行链路上保持正交性。

公开(公告)号：US08498215B2

公开(公告)日：2013-07-30

申请号：US11175787

申请日：2005-07-05

申请人： Jay Rodney Walton ,  Shravan K. Surineni ,  Arnaud Maylan ,  Sanjiv Nanda

发明人： Jay Rodney Walton ,  Shravan K. Surineni ,  Arnaud Maylan ,  Sanjiv Nanda

IPC分类号： H04J1/16

CPC分类号： H04L1/0015 ,  H04B17/309 ,  H04L1/0002 ,  H04L1/1607 ,  Y02D50/10

摘要： Techniques for performing open-loop rate control in a TDD communication system are described. The channel quality of a first link is estimated based on a transmission received via the first link. The channel quality of a second link is estimated based on the estimated channel quality of the first link and an asymmetric parameter. At least one rate for a data transmission via the second link is selected based on the estimated channel quality of the second link. The estimated channel quality for each link may be given by a set of SNR estimates for a set of transmission channels on that link. The asymmetric parameter may be determined based on (1) the capabilities (e.g., transmit power, receiver noise figure, and number of antennas) of the transmitting and receiving stations or (2) received SNRs for the first and second links.

摘要翻译： 描述用于在TDD通信系统中执行开环速率控制的技术。 基于经由第一链路接收的传输来估计第一链路的信道质量。 基于第一链路的估计信道质量和非对称参数来估计第二链路的信道质量。 基于第二链路的估计信道质量来选择用于经由第二链路的数据传输的至少一个速率。 每个链路的估计信道质量可以由对该链路上的一组传输信道的一组SNR估计给出。 可以基于（1）发射和接收站的能力（例如，发射功率，接收机噪声系数和天线数）来确定非对称参数，或者（2）第一和第二链路的接收SNR。

公开(公告)号：US08483704B2

公开(公告)日：2013-07-09

申请号：US11355538

申请日：2006-02-15

申请人： Sanjiv Nanda ,  Aleksandar Gogic ,  Manoj M. Deshpande ,  Nikhil Jain

发明人： Sanjiv Nanda ,  Aleksandar Gogic ,  Manoj M. Deshpande ,  Nikhil Jain

IPC分类号： H04W24/00

CPC分类号： H04W48/16 ,  H04W64/003

摘要： The disclosure is directed to a mobile communication device that measures characteristics or attributes of a first communications network that vary according to physical location within that first communications network to create a fingerprint, or signature, of a location within the first communications network. When the fingerprint of the current location of the mobile device is created it can be compared to a known fingerprint associated with a second communication network to determine the mobile device's proximity to the second communications network. Furthermore, the second and subsequent fingerprint that are generated for a particular communications network can be used to modify the stored fingerprint so as to refine it to improve detecting the proximity to the communications network.

摘要翻译： 本公开涉及一种移动通信设备，其测量根据第一通信网络内的物理位置而变化的第一通信网络的特性或属性，以创建第一通信网络内的位置的指纹或签名。 当创建移动设备的当前位置的指纹时，可将其与与第二通信网络相关联的已知指纹进行比较，以确定移动设备与第二通信网络的接近度。 此外，为特定通信网络生成的第二和随后的指纹可以用于修改存储的指纹，以便细化它，以改进检测到通信网络的接近度。