公开(公告)号：WO2013076642A2

公开(公告)日：2013-05-30

申请号：PCT/IB2012056550

申请日：2012-11-19

申请人： ERICSSON TELEFON AB L M

发明人： HUI DENNIS ,  BALACHANDRAN KUMAR ,  GUEY JIANN-CHING

IPC分类号： H04W52/02 ,  H04W76/04 ,  H04W88/08

CPC分类号： H04W52/0206 ,  H04W76/048 ,  Y02D70/00 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/166 ,  Y02D70/24 ,  Y02D70/25

摘要： Systems and methods are disclosed for providing energy efficient operation for wireless access nodes in a dense deployment of wireless access nodes in a cellular communication network. In one particular embodiment, wireless access nodes form a super dense network. In one embodiment, a wireless access node in a dense deployment of wireless access nodes in a cellular communication network includes a transmitter and a receiver that are operated according to a discontinuous transmit and a discontinuous receive mode of operation. The wireless access node controls one or more duty cycles for the discontinuous transmit and discontinuous receive mode of operation based on an alertness state of the wireless access node. In one embodiment, the one or more duty cycles increase as the alertness state of the wireless access node increases. In this manner, the wireless access node is operated in an energy efficient manner.

摘要翻译： 公开了用于在蜂窝通信网络中密集部署无线接入节点中为无线接入节点提供节能操作的系统和方法。 在一个特定实施例中，无线接入节点形成超密集网络。 在一个实施例中，蜂窝通信网络中密集部署的无线接入节点中的无线接入节点包括根据不连续接收操作模式和不连续接收操作模式操作的发射机和接收机。 基于无线接入节点的清醒状态，无线接入节点控制用于不连续发射和不连续接收操作模式的一个或多个占空比。 在一个实施例中，随着无线接入节点的清醒状态增加，一个或多个占空比增加。 以这种方式，无线接入节点以节能方式运行。

公开(公告)号：WO2011039704A3

公开(公告)日：2011-10-27

申请号：PCT/IB2010054371

申请日：2010-09-28

申请人： ERICSSON TELEFON AB L M ,  HUI DENNIS ,  ZANGI KAMBIZ

发明人： HUI DENNIS ,  ZANGI KAMBIZ

IPC分类号： H04L25/03 ,  H04L25/02

CPC分类号： H04L25/03343 ,  H04B7/024 ,  H04B7/0617 ,  H04L5/0035 ,  H04L25/0204

摘要： Precoder weights employed at a base station which coordinates with other base stations to form a super-cell are determined by (a) determining an initial downlink preceding matrix at the base station for a mobile station serviced by the base station in the super-cell, (b) revising a downlink receiver matrix associated with the mobile station based on the initial downlink precoding matrix; (c) transforming the downlink receiver matrix to an uplink precoder matrix associated with the mobile station, (d) revising an uplink receiver matrix associated with each base station in uplink communication with the mobile station based on the uplink precoder matrix associated with the mobile station, and (e) revising the initial downlink preceding matrix by transforming the uplink receiver matrix to a revised downlink precoding matrix Steps (b), (c), (d) and (e) are repeated for a pellicular number of iterations to determine a final downlink preceding matrix for the mobile station.

摘要翻译： 通过以下步骤确定在与其他基站协调以形成超小区的基站处采用的预编码器权重：（a）确定在基站处由基站在超小区中服务的移动台在基站处的初始下行链路前置矩阵， （b）基于初始下行链路预编码矩阵修改与移动台相关联的下行链路接收机矩阵; （c）将所述下行链路接收机矩阵变换为与所述移动台相关联的上行链路预编码矩阵，（d）基于与所述移动台相关联的所述上行链路预编码矩阵，修改与所述移动台的上行链路通信中与每个基站相关联的上行链路接收机矩阵 ，并且（e）通过将上行链路接收机矩阵变换为修改的下行链路预编码矩阵来修改初始下行链路先前矩阵。对于迭代次数重复步骤（b），（c），（d）和（e），以确定 用于移动台的最后下行链路前置矩阵。

公开(公告)号：WO2007126385A2

公开(公告)日：2007-11-08

申请号：PCT/SE2007050294

申请日：2007-04-30

申请人： ERICSSON TELEFON AB L M

发明人： CHENG JUNG-FU ,  FURUSKAER ANDERS ,  HUI DENNIS ,  KAZMI MUHAMMAD ,  SIMONSSON ARNE ,  SKILLERMARK PER

IPC分类号： H04L27/26 ,  H04B7/005

CPC分类号： H04L27/2608 ,  H04L5/006 ,  H04L5/0062 ,  H04L27/364 ,  H04W72/1231

摘要： According to methods and apparatus taught herein, user equipments (UEs) in a wireless communication network are scheduled based on determining received signal power densities for a plurality of UEs to be scheduled, allocating UEs to scheduling intervals based on a sorting of their received signal power densities, and assigning UEs in the same scheduling interval to mirror frequency bands within an available frequency spectrum according to the sorting. For example, UEs to be scheduled are assigned to a given scheduling interval in rank order of their received signal power densities until the scheduling interval is fully allocated. Remaining UEs are assigned in rank order to one or more other scheduling intervals, and the process may be repeated or otherwise carried out on an ongoing basis. Such an allocation scheme tends to minimize both adjacent frequency and mirror frequency interferences between UEs scheduled in the same interval.

摘要翻译： 根据本文教导的方法和装置，基于确定要调度的多个UE的接收信号功率密度来调度无线通信网络中的用户设备（UE），基于对其接收信号功率的分类，将UE分配到调度间隔 并且按照相同的调度间隔分配UE以根据排序来反映可用频谱内的频带。 例如，要调度的UE被分配给其接收信号功率密度的等级的给定调度间隔，直到调度间隔被完全分配为止。 剩余的UE被按照等级顺序分配给一个或多个其他调度间隔，并且该过程可以在持续的基础上重复或以其他方式执行。 这种分配方案倾向于最小化在相同间隔中调度的UE之间的相邻频率和镜像频率干扰。

公开(公告)号：WO2011119140A3

公开(公告)日：2012-02-02

申请号：PCT/US2010028096

申请日：2010-03-22

申请人： ERICSSON TELEFON AB L M ,  GAN JIANSONG ,  HOYMANN CHRISTIAN ,  HUI DENNIS

发明人： GAN JIANSONG ,  HOYMANN CHRISTIAN ,  HUI DENNIS

IPC分类号： H04L25/02 ,  H04B7/06 ,  H04B7/155 ,  H04B7/26 ,  H04L1/00

CPC分类号： H04L1/0026 ,  H04B7/065 ,  H04B7/155 ,  H04L1/003 ,  H04L25/0202 ,  H04L43/08

摘要： A backhaul link is established between a base station and a relay that assists the base station in communicating with a mobile device over an access link established between the relay and the mobile device. The channel response of the backhaul link is determined by estimating first and second parts of the backhaul link channel response, the second part changing faster than the first part. The first part of the backhaul link channel response is estimated by calculating an average of the backhaul link channel response over a predetermined period at the relay and the second part is estimated by calculating variation in the backhaul link channel response over the predetermined period at the relay. Quantized versions of the first and second parts of the backhaul link channel response are transmitted from the relay to the base station over the backhaul link.

摘要翻译： 在基站和中继站之间建立回程链路，协助基站通过在中继站和移动设备之间建立的接入链路与移动设备进行通信。 通过估计回程链路信道响应的第一和第二部分来确定回程链路的信道响应，第二部分比第一部分更快地改变。 回程链路信道响应的第一部分通过计算中继站上的预定时段内的回程链路信道响应的平均值来估计，并且通过计算继电器上的预定周期内的回程链路信道响应的变化来估计第二部分 。 回程链路信道响应的第一和第二部分的量化版本通过回程链路从中继站发送到基站。

公开(公告)号：WO2010061271A3

公开(公告)日：2010-07-22

申请号：PCT/IB2009007551

申请日：2009-11-24

申请人： ERICSSON TELEFON AB L M ,  ZANGI KAMBIZ ,  DAHLMAN ERIK ,  HUI DENNIS

发明人： ZANGI KAMBIZ ,  DAHLMAN ERIK ,  HUI DENNIS

IPC分类号： H04L27/26 ,  H04L5/00

CPC分类号： H04L5/0051 ,  H04L5/0007 ,  H04L5/0062 ,  H04L25/0202

摘要： The present invention provides a method of generating mutually orthogonal reference signals for different user terminals in and OFDM system that span different but overlapping subcarriers. The subcarriers allocated to the user terminals are divided into a plurality of non-overlapping subcarrier blocks. Each user terminal is then allocated one or more subcarrier blocks. For each subcarrier block, a user terminal is assigned a reference signal comprising a base reference sequence and a linear phase rotation. To ensure mutual orthogonality among all user terminals, user terminals allocated the same subcarrier block use the same base reference sequence with different linear phase rotations.

摘要翻译： 本发明提供了一种对跨越不同但重叠的子载波的不同用户终端和OFDM系统生成相互正交参考信号的方法。 分配给用户终端的子载波被划分为多个不重叠的副载波块。 然后，每个用户终端被分配一个或多个子载波块。 对于每个子载波块，向用户终端分配包括基本参考序列和线性相位旋转的参考信号。 为了确保所有用户终端之间的相互正交性，分配相同子载波块的用户终端使用具有不同线性相位旋转的相同的基准参考序列。

公开(公告)号：WO2008153479A2

公开(公告)日：2008-12-18

申请号：PCT/SE2008050616

申请日：2008-05-26

申请人： ERICSSON TELEFON AB L M

发明人： HUI DENNIS ,  KRASNY LEONID

IPC分类号： H04B7/06 ,  H04L1/06 ,  H04L27/26

CPC分类号： H04B7/0417 ,  H04B7/0426 ,  H04B7/0626 ,  H04L1/0675 ,  H04L25/0206 ,  H04L27/2601

摘要： Multi-antenna transmission control presented herein involves generating a set of virtual channel realizations at the transmitter (10) that shares the same second-order statistics as the actual channel realizations observed for a targeted receiver (12). By making the control-related quantities of interest at the transmitter (10) depend on the long-term statistics of the channel, the actual channel realizations are not needed for transmission control, e.g., for accurate Multiple-Input-Multiple-Output (MIMO) precoding. As such, the use of virtual channel realizations enables transmission control that approaches the "closed-loop" channel capacity that would be provided by full feedback of the (instantaneous) actual channel realizations, without requiring the overhead signaling burden that attends full feedback.

摘要翻译： 本文提出的多天线传输控制涉及在发射机（10）处生成一组虚拟信道实现，其共享与针对目标接收机（12）观测到的实际信道实现相同的二阶统计。 通过使发射机（10）处的控制相关量取决于信道的长期统计，实际的信道实现不需要用于传输控制，例如，对于精确的多输入多输出（MIMO） ）预编码。 因此，虚拟信道实现的使用使得接近将通过（瞬时）实际信道实现的完全反馈提供的“闭环”信道容量的传输控制，而不需要出现完全反馈的开销信令负担。

公开(公告)号：WO2015121839A3

公开(公告)日：2015-12-03

申请号：PCT/IB2015051115

申请日：2015-02-15

申请人： ERICSSON TELEFON AB L M

发明人： MARIC IVANA ,  HUI DENNIS

IPC分类号： H04L12/701 ,  H04W40/00 ,  H04W40/12 ,  H04W40/22

CPC分类号： H04W40/04 ,  H04W40/12 ,  H04W40/22

摘要： The proposed layer solution defines two or more layers of relay nodes (10) to convey traffic data from a source node (10S) to a destination node (10D). All of the nodes (10) in a given layer were selected for that layer because they each satisfied a signal quality requirement specified for that layer, where all relay nodes (10) defined in one layer simultaneously start transmitting in response to a received transmission. Due to the layered approach, the destination node (10D) may be configured to decode only the traffic data relayed by the relay nodes (10) in the immediately preceding (final) layer while treating any remaining received signals as noise. As a result, only those relay nodes (10) most likely to significantly contribute to and improve the signal quality of traffic data received at the destination node (10D) are selected as relay nodes (10) for a particular source-destination node pair.

摘要翻译： 所提出的层解决方案定义了两层或更多层中继节点（10）以将业务数据从源节点（10S）传送到目的节点（10D）。 给定层中的所有节点（10）都被选择用于该层，因为它们各自满足为该层指定的信号质量要求，其中在一个层中定义的所有中继节点（10）响应于接收到的传输而同时开始传输。 由于分层方法，目的地节点（10D）可以被配置为仅解码紧接在前面（最后）层中的中继节点（10）中继的业务数据，同时将任何剩余的接收信号作为噪声处理。 结果，只有那些最有可能对在目的地节点（10D）处接收到的业务数据的信号质量作出显着贡献并且提高其信号质量的中继节点（10）被选择为用于特定的源 - 目的地节点对的中继节点（10）。

公开(公告)号：WO2014049542A3

公开(公告)日：2014-06-12

申请号：PCT/IB2013058863

申请日：2013-09-25

申请人： ERICSSON TELEFON AB L M

发明人： HUI DENNIS ,  BALACHANDRAN KUMAR ,  BALDEMAIR ROBERT ,  AXNÄS JOHAN ,  TULLBERG HUGO

IPC分类号： H04W40/16

CPC分类号： H04W40/16 ,  H04L45/124 ,  Y02D70/00 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/22 ,  Y02D70/34

摘要： Systems and methods for computing and/or utilizing mutual information based link metrics for a link in a wireless mesh network are disclosed. In one embodiment, one or more mutual information values are computed for a link between a transmitter of a first network node and a receiver of a second network node in a wireless mesh network. Each of the one or more mutual information values is computed for a different hypothesized transmission mode for the link. One or more link metrics for the link are computed as a function of the mutual information values, where each link metric is computed based on a different one of the one or more mutual information values. In this manner, a link metric is computed for each of the one or more hypothesized transmission modes for the link. At least one of the link metrics are then provided to a routing update module.

摘要翻译： 公开了用于计算和/或利用无线网状网络中的链路的基于互信息的链路度量的系统和方法。 在一个实施例中，针对无线网状网络中的第一网络节点的发射机和第二网络节点的接收机之间的链路来计算一个或多个互信息值。 为链路的不同假设传输模式计算一个或多个互信息值中的每一个。 根据互信息值来计算链接的一个或多个链接度量，其中基于一个或多个互信息值中的不同的一个来计算每个链接度量。 以这种方式，为链路的一个或多个假设传输模式中的每一个计算链路度量。 然后将至少一个链接度量提供给路由更新模块。

公开(公告)号：WO2013088423A3

公开(公告)日：2013-11-07

申请号：PCT/IB2012057401

申请日：2012-12-17

申请人： ERICSSON TELEFON AB L M

发明人： HUI DENNIS ,  ZANGI KAMBIZ

IPC分类号： H04B7/02 ,  H04B7/04 ,  H04W52/34 ,  H04W52/36

CPC分类号： H04B7/024 ,  H04B7/0465 ,  H04W52/346 ,  H04W52/365

摘要： In a Coordinated Multi-point (CoMP) system, the base station (BS) in each serving cell (or sector) is allowed to use not only its own antennas, but also the antennas of neighboring BSs to transmit to mobile terminals in the serving cell to form a floating CoMP cell. The serving BS in each floating CoMP cell computes tentative linear precoding weights for transmissions from the coordinating BSs in the floating CoMP cell to users in the serving cell of the floating CoMP cell. The serving BS determines the power availability for transmit antennas in the floating CoMP cell that are shared with other floating CoMP cells, and scales the tentative precoding weights based on the power availability of the shared transmit antennas to determine final precoding weights so that the power constraints of the shared transmit antennas will not be violated.

摘要翻译： 在协调多点（CoMP）系统中，每个服务小区（或扇区）中的基站（BS）被允许不仅使用其自己的天线，而且还使用相邻BS的天线来发送给服务中的移动终端 细胞形成浮游CoMP细胞。 每个浮动CoMP单元中的服务BS为浮动CoMP小区中的协调BS的传输计算用于浮动CoMP小区的服务小区中的用户的初步线性预编码权重。 服务BS确定与其他浮动CoMP小区共享的浮动CoMP小区中的发射天线的功率可用性，并且基于共享发射天线的功率可用性来缩放初步预编码权重以确定最终预编码权重，使得功率约束 的共享发射天线将不会被违反。

公开(公告)号：WO2007133156A3

公开(公告)日：2008-02-14

申请号：PCT/SE2007050212

申请日：2007-04-03

申请人： ERICSSON TELEFON AB L M

发明人： GUEY JIANN-CHING ,  HAFEEZ ABDULRAUF ,  HUI DENNIS

IPC分类号： H04L25/02 ,  H04L27/26

CPC分类号： H04L25/0212 ,  H04L25/022 ,  H04L25/0222 ,  H04L27/2647

摘要： A wireless communication device uses a time-invariant delay-Doppler channel response estimate for received signal demodulation. The device provides coherent signal demodulation by accounting for frequency and time selectivity in a land-based mobile communication environment, which arise mainly because of delay and Doppler shifts, respectively. In one embodiment, the wireless communication device includes a channel estimator that estimates channel response in a wireless communication network by estimating a delay-Doppler response of a wireless communication channel to obtain a delay-Doppler channel response estimate and converting the delay-Doppler channel response estimate to a time-varying channel response estimate, e.g., a time-varying frequency or impulse response. The delay-Doppler response may be estimated in a continuous or discrete domain. In one embodiment, the channel estimator includes a delay-Doppler correlator that measures the delay-Doppler response by observing a response of a wireless communication channel to a pilot signal and converting the observed response to a delay-Doppler domain.

摘要翻译： 无线通信设备使用用于接收信号解调的时不变延迟多普勒信道响应估计。 该装置通过考虑在陆基移动通信环境中的频率和时间选择性来提供相干信号解调，这主要是由于延迟和多普勒频移引起的。 在一个实施例中，无线通信设备包括通过估计无线通信信道的延迟多普勒响应来估计无线通信网络中的信道响应的信道估计器，以获得延迟多普勒信道响应估计并转换延迟多普勒信道响应 估计到时变信道响应估计，例如时变频率或脉冲响应。 可以在连续或离散的域中估计延迟多普勒响应。 在一个实施例中，信道估计器包括延迟多普勒相关器，其通过观察无线通信信道对导频信号的响应并将观测到的响应转换为延迟多普勒域来测量延迟多普勒响应。