公开(公告)号：WO2012156574A1

公开(公告)日：2012-11-22

申请号：PCT/FI2012/050308

申请日：2012-03-29

Applicant: NOKIA CORPORATION ,  KAFLE, Padam ,  KASSLIN, Mika ,  VARSHNEY, Prabodh

Inventor： KAFLE, Padam ,  KASSLIN, Mika ,  VARSHNEY, Prabodh

IPC: H04W72/04 ,  H04W72/08 ,  H04W28/00 ,  H04W84/12 ,  H04W92/02

CPC classification number: H04W72/1205 ,  H04B17/345 ,  H04W28/04 ,  H04W28/18 ,  H04W28/26 ,  H04W74/085 ,  H04W84/12 ,  H04W88/08

Abstract: Interference management in a wireless network is disclosed in this document. Two networks with overlapping frequency bands and coverage areas are configured to cooperate in order to mitigate mutual interference. Some embodiments relate to medium reservation in a first network to protect a transmission in a second network, while other embodiments relate to aligning communication parameters between the networks.

Abstract translation: 无线网络中的干扰管理在本文中被公开。 具有重叠频带和覆盖区域的两个网络被配置为协作以减轻相互干扰。 一些实施例涉及在第一网络中的媒体预留以保护第二网络中的传输，而其它实施例涉及对准网络之间的通信参数。

公开(公告)号：WO2006138288A3

公开(公告)日：2008-01-03

申请号：PCT/US2006022955

申请日：2006-06-13

Applicant: NOKIA CORP ,  NOKIA INC ,  BOARIU ADRIAN ,  VARSHNEY PRABODH

Inventor： BOARIU ADRIAN ,  VARSHNEY PRABODH

IPC: H04J3/22

CPC classification number: H04L5/0007 ,  H04L5/0021 ,  H04L5/0064 ,  H04W48/08 ,  H04W72/085 ,  H04W88/06 ,  H04W88/10

Abstract: A method includes selecting one of a plurality of transmitter systems used to transmit data. Each transmitter system corresponds to one of a plurality of subbands. Each subband has a bandwidth and at least two of the subbands have different bandwidths. A physical layer technology is common to and used by each transmitter system to transmit on a respective subband. The selected transmitter system transmits the data. An apparatus includes a plurality of transmitter systems, each corresponding to one of a plurality of subbands. Each subband has a bandwidth and at least two of the subbands have different bandwidths. A physical layer technology is common to and used by each transmitter system to transmit on a respective subband. A controller is operable to select one of the transmitter systems to use to transmit data, and is operable to cause the selected transmitter system to transmit the data.

Abstract translation: 一种方法包括选择用于发送数据的多个发射机系统之一。 每个发射机系统对应于多个子带中的一个。 每个子带具有带宽，并且至少两个子带具有不同的带宽。 物理层技术是每个发射机系统在相应子带上传输的常用和使用的。 所选的发射机系统发送数据。 一种装置包括多个发射机系统，每个发射机系统对应于多个子带中的一个。 每个子带具有带宽，并且至少两个子带具有不同的带宽。 物理层技术是每个发射机系统在相应子带上传输的常用和使用的。 控制器可操作以选择用于发送数据的发射机系统中的一个，并且可操作以使所选择的发射机系统发送数据。

公开(公告)号：WO2005043788A2

公开(公告)日：2005-05-12

申请号：PCT/IB2004/003455

申请日：2004-10-21

Applicant: NOKIA CORPORATION ,  NOKIA, INC. ,  BORRAN, Mohammed, J. ,  VARSHNEY, Prabodh ,  LILLEBERG, Jorma

Inventor： BORRAN, Mohammed, J. ,  VARSHNEY, Prabodh ,  LILLEBERG, Jorma

IPC: H04L

CPC classification number: H04L27/34 ,  H04L1/0625 ,  H04L1/0631 ,  H04L1/0656

Abstract: A multi-level space time signal constellation that is optimized for use with a multi-carrier, multi-path communication scheme includes points on a first level separated from points on a mutually exclusive second level by a minimum distance that is based on a conditional probability distribution, preferably a Kullback-Leibler (KL) distance. Points within one level may be separated by a Euclidean distance, but spherical levels are rotated relative to one another to maximize a minimum inter-level KL distance. A receiver uses pilot symbols to estimate the channels and two-stage symbol detection, determining in one stage the constellation level and in another stage the point in the level. The receiver calculates a likelihood function based on a conditional distribution which does not reduce to the Euclidean-based nearest-neighbor detector. A single stored constellation may be scaled based on received signal to noise ratio. Each constellation defines n=2M real dimensions, wherein M is the number of transmit antennas.

Abstract translation: 优化用于多载波多路径通信方案的多级时空信号星座包括在相互排斥的第二级别上的点之间的第一级上的点与基于条件概率的最小距离的点 分布，最好是Kullback-Leibler（KL）距离。 一个级别内的点可以通过欧几里德距离分开，但是球面水平相对于彼此旋转以使最小跨越距离KL距离最大化。 接收机使用导频符号来估计信道和两级符号检测，在一个阶段中确定星座级别，在另一级中确定该级别中的点。 接收机基于不减少到基于欧几里德的最近邻检测器的条件分布来计算似然函数。 可以基于接收到的信噪比来缩放单个存储的星座。 每个星座定义n = 2M个实际维度，其中M是发射天线的数量。

公开(公告)号：WO2005004371A2

公开(公告)日：2005-01-13

申请号：PCT/US2004/019909

申请日：2004-06-22

Applicant: NOKIA CORPORATION ,  BORRAN, Mohammad, Jaber ,  VARSHNEY, Prabodh ,  LILLEBERG, Jorma

Inventor： BORRAN, Mohammad, Jaber ,  VARSHNEY, Prabodh ,  LILLEBERG, Jorma

IPC: H04L

CPC classification number: H04L5/0007 ,  H04L5/0021 ,  H04L5/0048 ,  H04L25/022 ,  H04L25/0226 ,  H04L27/0008 ,  H04L27/3405 ,  H04L27/3455

Abstract: A signal constellation for wireline or wireless multi-carrier communication systems, such as systems using OFDM or MC-CDMA, has points separated from one another by maximizing a distance between conditional probability distributions, such as a Kullbeck-Leibler (KL) distance. Preferably, the constellation points are arranged in concentric circles, with or without a point at the origin, wherein adjacent circles are rotated to maximize an angular distance between points on adjacent circles. Pilot symbols inserted in the transmitted signal are used by a receiver to estimate the channel of the multi-carrier system. Different constellations show optimum performance for different signal to noise ratios, and for different numbers of taps used to estimate the channel, especially in a fast fading environment where there may be fewer pilots per OFDM or MC-CDMA symbol than channel taps.

Abstract translation: 用于有线或无线多载波通信系统（例如使用OFDM或MC-CDMA的系统）的信号星座通过使条件概率分布（例如Kullbeck-Leibler（KL））距离之间的距离最大化而具有彼此分离的点。 优选地，星座点以同心圆布置，具有或不具有原点的点，其中相邻的圆圈被旋转以最大化相邻圆上的点之间的角距离。 在发送信号中插入的导频符号被接收机用于估计多载波系统的信道。 不同的星座显示不同信噪比的最佳性能，以及用于估计信道的不同数量的抽头，特别是在快速衰落环境中，每个OFDM或MC-CDMA符号的导频可能比信道抽头少。

公开(公告)号：WO2013066346A1

公开(公告)日：2013-05-10

申请号：PCT/US2011/059353

申请日：2011-11-04

Applicant: NOKIA CORPORATION ,  KASSLIN, Mika ,  KAFLE, Padam Lal ,  VARSHNEY, Prabodh ,  NOKIA INC.

Inventor： KASSLIN, Mika ,  KAFLE, Padam Lal ,  VARSHNEY, Prabodh

IPC: H04W36/00

CPC classification number: H04W36/36 ,  H04W16/14 ,  H04W48/18

Abstract: This document discloses methods, apparatuses, and computer programs for selecting and providing a terminal apparatus of a wireless network with services. The terminal apparatus selects a wireless apparatus to provide the terminal apparatus with at least a first service. Then, it causes transmission of an association request to the wireless apparatus, wherein the association request comprises at least one information element indicating whether the request relates to provision of the first service without a second service or to provision of both the first service and a second service, wherein the second service is different from the first service and is subjected to the presence of the first service. Upon approval acquired from the wireless apparatus, the at least said first service is received from the wireless apparatus.

Abstract translation: 本文件公开了用于选择和提供具有服务的无线网络终端装置的方法，装置和计算机程序。 终端装置选择无线装置，为终端装置提供至少第一服务。 然后，它将关联请求发送到无线装置，其中关联请求包括至少一个信息元素，指示该请求是否涉及提供第一服务而不进行第二服务，或者提供第一服务和第二服务 服务，其中所述第二服务不同于所述第一服务并且受到所述第一服务的存在。 在从无线装置获得批准的情况下，从无线装置接收至少所述第一服务。

公开(公告)号：WO2004100385A2

公开(公告)日：2004-11-18

申请号：PCT/US2004012782

申请日：2004-04-26

Applicant: NOKIA CORP ,  NOKIA INC ,  VARSHNEY PRABODH ,  VILPPONEN HANNU ,  BORRAN MOHAMMAD JABER

Inventor： VARSHNEY PRABODH ,  VILPPONEN HANNU ,  BORRAN MOHAMMAD JABER

IPC: H04B7/26 ,  H04B

CPC classification number: H04B7/2631

Abstract: A system and method for the efficient transmission of information in a code division multiple access (CDMA) wireless telecommunication system. To increase the rate of reliable transmission, an orthogonal frequency-division multiplexing (OFDM) scheme is implemented in a direct-spread CDMA network, this combination sometimes being referred to as multi-carrier CDMA (MC-CDMA). Information (such as voice and data), interspersed with a known pilot signal, is encoded and spread across the frequency domain, rather than the time domain as in traditional CDMA; the allowable transmission bandwidth is divided into a number of carriers. To achieve even larger transmission rates, the guardband between carriers is eliminated. To prevent interference, the number of pilot transmissions is reduced and a corresponding number of frequency bins at the border of an OFDM block are loaded with zeros. The receiver simply ignores these subcarriers when reconstructing the transmitted signal.

Abstract translation: 一种用于在码分多址（CDMA）无线电信系统中有效传输信息的系统和方法。 为了提高可靠传输速率，在直扩CDMA网络中实现了正交频分复用（OFDM）方案，这种组合有时被称为多载波CDMA（MC-CDMA）。 散布有已知导频信号的信息（例如语音和数据）被编码并扩展到频域，而不是传统CDMA中的时域; 允许的传输带宽被划分为多个载波。 为了实现更大的传输速率，消除了载波之间的保护带。 为了防止干扰，导频传输的数量减少，并且在OFDM块的边界处的相应数量的频率仓被加载零。 当重建发射信号时，接收机简单地忽略这些子载波。

公开(公告)号：WO2004012345A3

公开(公告)日：2004-05-13

申请号：PCT/US0323187

申请日：2003-07-24

Applicant: NOKIA CORP ,  VARSHNEY PRABODH ,  VILPPONEN HANNU ,  BORRAN MOHAMMAD J ,  PAPADIMITRIOU PANAYIOTIS

Inventor： VARSHNEY PRABODH ,  VILPPONEN HANNU ,  BORRAN MOHAMMAD J ,  PAPADIMITRIOU PANAYIOTIS

IPC: H04L5/02 ,  H04B7/216

CPC classification number: H04L5/026

Abstract: A system and method for the efficient transmission of information in a code division multiple access (CDMA) wireless telecommunication system. The rate of reliable transmission is increased by implementing an orthogonal frequency-division multiplexing (OFDM) scheme in, for example, a direct-spread CDMA network, resulting in a multi-carrier CDMA (MC-CDMA) system. Information (such as voice and data), is encoded (205), divided, and spread across the frequency domain (255), rather than in the time domain as in traditional CDMA; the allowable transmission bandwidth is divided into a number of carriers. Using this scheme, a number of loading parameters such as code rate, data rate, and the number of streams into which the encoded data is divided may be varied to increase the performance of the system. Application of the variable loading parameter may be a function of channel quality, such as the presence of noise or the channel fading state.

Abstract translation: 用于在码分多址（CDMA）无线电信系统中有效传输信息的系统和方法。 通过在例如直接扩展的CDMA网络中实施正交频分复用（OFDM）方案来增加可靠传输的速率，从而产生多载波CDMA（MC-CDMA）系统。 信息（诸如语音和数据）被编码（205），划分并遍布频域（255），而不是如传统CDMA中那样在时域中传播; 允许的传输带宽被分成多个载波。 使用该方案，可以改变诸如码率，数据速率以及编码数据被划分成的流的数量等许多加载参数以提高系统的性能。 可变负载参数的应用可以是信道质量的函数，诸如噪声的存在或信道衰落状态。

公开(公告)号：WO2014007825A1

公开(公告)日：2014-01-09

申请号：PCT/US2012/045567

申请日：2012-07-05

Applicant: NOKIA CORPORATION ,  PROBASCO, Michael, Scott ,  PATIL, Basavaraj ,  KAFLE, Padam ,  VARSHNEY, Prabodh

Inventor： PROBASCO, Michael, Scott ,  PATIL, Basavaraj ,  KAFLE, Padam ,  VARSHNEY, Prabodh

IPC: H04W72/04

CPC classification number: H04W72/042

Abstract: Methods and apparatus, including computer program products, are provided for using white space frequencies. In one aspect there is provided a method. The method may include receiving, from a base station and a cellular down link, at least one white space frequency available for use by a user equipment including a radio interface; configuring the radio interface to operate on the received at least one white space frequency; and transmitting, by the radio interface at the user equipment, on the at least one white space frequency. Related apparatus, systems, methods, and articles are also described.

Abstract translation: 提供了使用白色空间频率的方法和装置，包括计算机程序产品。 在一个方面，提供了一种方法。 该方法可以包括从基站和蜂窝下行链路接收可用于包括无线电接口的用户设备使用的至少一个空白频率; 配置所述无线电接口以对所接收的至少一个空白频率进行操作; 并且通过用户设备的无线电接口在所述至少一个空白频率上发送。 还描述了相关装置，系统，方法和制品。

公开(公告)号：WO2005043788A3

公开(公告)日：2009-04-02

申请号：PCT/IB2004003455

申请日：2004-10-21

Applicant: NOKIA CORP ,  NOKIA INC ,  BORRAN MOHAMMED J ,  VARSHNEY PRABODH ,  LILLEBERG JORMA

Inventor： BORRAN MOHAMMED J ,  VARSHNEY PRABODH ,  LILLEBERG JORMA

IPC: H04K1/10 ,  H04L20060101

CPC classification number: H04L27/34 ,  H04L1/0625 ,  H04L1/0631 ,  H04L1/0656

Abstract: A multi-level space time signal constellation that is optimized for use with a multi-carrier, multi-path communication scheme includes points on a first level separated from points on a mutually exclusive second level by a minimum distance that is based on a conditinal probability distribution, preferably a Kullback-Leiber (KL) distance. Points within one level may be separated by a Euclideam distance, byt spherical levels are rotated relative to one another to maximize a minimum inter-level KL distance. A receive uses pilot symbols to estimate the channels and two-stage symbol detection, determining in one stage the constellation level and in another stage the point in the level. The receiver calculates a likehood function based on a conditional distribution which does not reduce to the Euclidean-based nearest-neighbor detector. A single stored constellation may be scaled based on received signal to noise ratio.

Abstract translation: 被优化用于多载波多路径通信方案的多级时空信号星座包括在相互排斥的第二级上与点隔开的第一级上的点与基于条件概率的最小距离 分布，最好是Kullback-Leiber（KL）距离。 一个级别内的点可以通过欧几里得距离分开，球面水平相对于彼此旋转，以使最小间距KL距离最大化。 A接收使用导频符号来估计信道和两级符号检测，在一个阶段中确定星座级别，并且在另一级中确定该级别中的点。 接收器基于不减少到基于欧几里德的最近邻检测器的条件分布来计算相似度函数。 可以基于接收到的信噪比来缩放单个存储的星座。

公开(公告)号：WO2004079932A3

公开(公告)日：2006-08-17

申请号：PCT/US2004007043

申请日：2004-03-05

Applicant: NOKIA CORP ,  PAPADIMITRIOU PANAYIOTIS ,  VARSHNEY PRABODH ,  BORRAN MOHAMMAD J

Inventor： PAPADIMITRIOU PANAYIOTIS ,  VARSHNEY PRABODH ,  BORRAN MOHAMMAD J

IPC: H03K9/00 ,  H04B1/707 ,  H04B7/06 ,  H04B7/08 ,  H04B7/216 ,  H04L1/06 ,  H04L25/03

CPC classification number: H04L25/03038 ,  H04B1/71055 ,  H04B1/71075 ,  H04B1/7115 ,  H04B7/0669 ,  H04B7/0891 ,  H04L1/0618

Abstract: A hybrid receiver (606), and an associated method, for receiving a radio signal carrying transmitted data that is subject to distortion in the transmission channel. The receiver includes a plurality of stages that perform parallel interference cancellation (PIC) to establish successively more accurate estimates of the transmitted data, including a receiver first stage (611) being either a RAKE receiver or a linear minimum mean-square error (LMMSE) receiver, a second stage (620) including an LMMSE (626), and preferably a third stage (630) also including an LMMSE (636). Each stage processes the estimates of the transmitted signal provided by the stage preceding it to mitigate or eliminate as much transmission-channel interference as possible and prove a refined estimate for processing by subsequent stages. Improved channel estimation may be achieved by processing the pilot signal in similar fashion as well.

Abstract translation: 一种混合接收机（606）和相关联的方法，用于接收承载传输信道中的失真的传输数据的无线电信号。 接收机包括执行并行干扰消除（PIC）的多个级，以建立对发射数据的连续更准确的估计，包括作为RAKE接收机的接收机第一级（611）或线性最小均方误差（LMMSE） 接收器，包括LMMSE（626）的第二级（620），并且优选地还包括LMMSE（636）的第三级（630）。 每个阶段处理由其之前的阶段提供的发送信号的估计，以减轻或消除尽可能多的传输信道干扰，并且证明后续阶段处理的精确估计。 可以通过以类似的方式处理导频信号来实现改进的信道估计。