CN106465465B - 在活跃使用的频谱内进行并行频谱使用的系统和方法 - Google Patents

在活跃使用的频谱内进行并行频谱使用的系统和方法 Download PDF

Info

Publication number
CN106465465B
CN106465465B CN201580019760.XA CN201580019760A CN106465465B CN 106465465 B CN106465465 B CN 106465465B CN 201580019760 A CN201580019760 A CN 201580019760A CN 106465465 B CN106465465 B CN 106465465B
Authority
CN
China
Prior art keywords
wireless network
fdd
ues
wireless
btss
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201580019760.XA
Other languages
English (en)
Other versions
CN106465465A (zh
Inventor
斯蒂芬·G·珀尔曼
安东尼奥·福伦扎
迪欧 马里奥·迪
法迪·赛比
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rearden LLC
Original Assignee
Rearden LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rearden LLC filed Critical Rearden LLC
Publication of CN106465465A publication Critical patent/CN106465465A/zh
Application granted granted Critical
Publication of CN106465465B publication Critical patent/CN106465465B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14—Spectrum sharing arrangements between different networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2615—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using hybrid frequency-time division multiple access [FDMA-TDMA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/1469—Two-way operation using the same type of signal, i.e. duplex using time-sharing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H04L5/0035—Resource allocation in a cooperative multipoint environment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • H04W88/10—Access point devices adapted for operation in multiple networks, e.g. multi-mode access points

Abstract

本发明描述了用于针对新的TDD或FDD网络并行地使用活跃使用的频谱以及用于使分布式输入分布式输出(DIDO)技术能够与新的网络和现有网络两者一起在相同频谱中使用的系统和方法。

Description

在活跃使用的频谱内进行并行频谱使用的系统和方法
相关申请的交叉引用
本申请要求2014年4月16日提交的名称为“Systems And Methods ForConcurrent Spectrum Usage Within Actively Used Spectrum”(在活跃使用的频谱内进行并行频谱使用的系统和方法)的共同待决的美国临时专利申请No.61/980,479的权益和优先权。
本申请可涉及以下共同待决的美国专利申请和美国临时专利申请：
名称为“Systems and Methods for Mapping Virtual Radio Instances intoPhysical Areas to Coherence in Distributed Antenna Wireless Systems”(用于在分布式天线无线系统中将虚拟无线电实例映射到物理相干区域中的系统和方法)的美国临时申请序列号61/937,273；
名称为“Systems and Methods for Radio Frequency Calibration ExploitingChannel Reciprocity in Distributed Input Distributed Output WirelessCommunications”(用于在分布式输入分布式输出无线通信中利用信道互易性进行射频校正的系统和方法)的美国专利申请序列号13/844,355；
名称为“Systems and Methods for Exploiting Inter-cell MultiplexingGain in Wireless Cellular Systems Via Distributed Input Distributed OutputTechnology”(用于经由分布式输入分布式输出技术在无线蜂窝系统中利用小区间多路复用增益的系统和方法)的美国专利申请序列号13/797,984；
名称为“Systems and Methods for Exploiting Inter-cell MultiplexingGain in Wireless Cellular Systems Via Distributed Input Distributed OutputTechnology”(用于经由分布式输入分布式输出技术在无线蜂窝系统中利用小区间多路复用增益的系统和方法)的美国专利申请序列号13/797,971；
名称为“Systems and Methods for Exploiting Inter-cell MultiplexingGain in Wireless Cellular Systems Via Distributed Input Distributed OutputTechnology”(用于经由分布式输入分布式输出技术在无线蜂窝系统中利用小区间多路复用增益的系统和方法)的美国专利申请序列号13/797，950；
名称为“System and Method For Distributed Antenna WirelessCommunications”(用于分布式天线无线通信的系统和方法)的美国专利申请序列号14/156,254；
名称为“Systems and Methods for Exploiting Inter-cell MultiplexingGain in Wireless Cellular Systems Via Distributed Input Distributed OutputTechnology”(用于经由分布式输入分布式输出技术在无线蜂窝系统中利用小区间多路复用增益的系统和方法)的美国专利申请序列号14/086,700；
名称为“Systems And Methods To Coordinate Transmissions In DistributedWireless Systems Via User Clustering”(用于经由用户聚类在分布式无线系统中协调传输的系统和方法)的美国专利申请序列号14/023,302；
名称为“Systems and Methods for Wireless Backhaul in Distributed-InputDistributed-Output Wireless Systems”(用于分布式输入分布式输出无线系统中的无线回程的系统和方法)的美国专利申请序列号13/633,702；
名称为“Systems and Methods to enhance spatial diversity indistributed-input distributed-output wireless systems”(用于在分布式输入分布式输出无线系统中增强空间分集的系统和方法)的美国专利申请序列号13/475,598；
名称为“System and Methods to Compensate for Doppler Effects inDistributed-Input Distributed Output Systems”(用于在分布式输入分布式输出系统中补偿多普勒效应的系统和方法)的美国专利申请序列号13/464,648；
名称为“System and Method for Adjusting DIDO Interference CancellationBased On Signal Strength Measurements”(用于基于信号强度测量调整DIDO干扰消除的系统和方法)的美国专利申请序列号13/461,682；
名称为“System and Methods for planned evolution and obsolescence ofmultiuser spectrum”(用于多用户频谱的计划演进和退化的系统和方法)的美国专利申请序列号13/233,006；
名称为“Systems and Methods to Exploit Areas of Coherence in WirelessSystems”(用于在无线系统中利用相干区域的系统和方法)的美国专利申请序列号13/232,996；
名称为“System And Method For Managing Handoff Of A Client BetweenDifferent Distributed-Input-Distributed-Output(DIDO)Networks Based OnDetected Velocity Of The Client”(用于基于所检测到的客户端速度管理客户端在不同分布式输入分布式输出(DIDO)网络之间的越区切换的系统和方法)的美国专利申请序列号12/802,989；
名称为“Interference Management，Handoff，Power Control And LinkAdaptation In Distributed-Input Distributed-Output(DIDO)CommunicationSystems”(分布式输入分布式输出(DIDO)通信系统中的干扰管理、越区切换、功率控制和链路适配)的美国专利申请序列号12/802,988；
名称为“System And Method For Link adaptation In DIDO MulticarrierSystems”(用于DIDO多载波系统中的链路适配的系统和方法)的美国专利申请序列号12/802,975；
名称为“System And Method For Managing Inter-Cluster Handoff OfClients Which Traverse Multiple DIDO Clusters”(用于管理穿越多个DIDO集群的客户端的集群间切换的系统和方法)的美国专利申请序列号12/802,974；
名称为“System And Method For Power Control And Antenna Grouping In ADistributed-Input-Distributed-Output(DIDO)Network”(用于分布式输入分布式输出(DIDO)网络中的功率控制和天线分组的系统和方法)的美国专利申请序列号12/802,958；
2014年2月18日公告的名称为“System and Method for Distributed InputDistributed Output Wireless Communications”(用于分布式输入分布式输出无线通信的系统和方法)的美国专利号8,654,815；
2013年10月29日公告的名称为“System and Method for DIDO PrecodingInterpolation in Multicarrier Systems”(用于多载波系统中的DIDO预编码内插的系统和方法)的美国专利号8,571,086；
2013年9月24日公告的名称为“Systems and Methods To CoordinateTransmissions In Distributed Wireless Systems Via User Clustering”(用于经由用户聚类在分布式无线系统中协调传输的系统和方法)的美国专利号8,542,763；
2013年4月23日公告的名称为“System and Method for Distributed InputDistributed Output Wireless Communications”(用于分布式输入分布式输出无线通信的系统和方法)的美国专利号8,428,162；
2012年5月1日公告的名称为“System And Method For Adjusting DIDOInterference Cancellation Based On Signal Strength Measurements”(用于基于信号强度测量调整DIDO干扰消除的系统和方法)的美国专利号8,170,081；
2012年4月17日公告的名称为“System and Method For Distributed Input-Distributed Output Wireless Communications”(用于分布式输入分布式输出无线通信的系统和方法)的美国专利号8,160,121；
2011年2月8日公告的名称为“System and Method For Enhancing NearVertical Incidence Skywave(”NVIS“)Communication Using Space-Time Coding”(用于使用空时编码增强近垂直入射天波(“NVIS”)通信的系统和方法)的美国专利号7,885,354；
2010年5月4日公告的名称为“System and Method For Spatial-MultiplexedTropospheric Scatter Communications”(用于空间多路复用的对流层散射通信的系统和方法)的美国专利号7,711,030；
2009年12月22日公告的名称为“System and Method for Distributed InputDistributed Output Wireless Communication”(用于分布式输入分布式输出无线通信的系统和方法)的美国专利号7,636,381；
2009年12月15日公告的名称为“System and Method for Distributed InputDistributed Output Wireless Communication”(用于分布式输入分布式输出无线通信的系统和方法)的美国专利号7,633,994；
2009年10月6日公告的名称为“System and Method for Distributed InputDistributed Output Wireless Communication”(用于分布式输入分布式输出无线通信的系统和方法)的美国专利号7,599,420；
2008年8月26日公告的名称为“System and Method for Distributed InputDistributed Output Wireless Communication”(用于分布式输入分布式输出无线通信的系统和方法)的美国专利号7,418,053；
背景技术
频分双工(“FDD”)和时分双工(“TDD”)这两种模式都常常用于无线通信系统。例如，LTE标准支持FDD和TDD模式，又如，802.11版本(例如，Wi-Fi)支持TDD操作模式。
在LTE的情况下，各种编号频带被限定在被称为“演进UMTS陆地无线接入”(E-UTRA)空气接口内。每个E-UTRA频带不仅指定了特定的频带编号，而且它还限定了该频带是FDD还是TDD，以及在频带内支持的带宽(例如，参见http：//en.wikipedia.org/wiki/LTE_frequency_bands#Frequency_bands_and_channel_bandwidths，获取E-UTRA频带列表以及它们规格)。例如，频带7是限定为针对上行链路(“UL”)使用2500-2570MHz、针对下行链路(“DL”)使用2620-2690MHz的频率范围的FDD频带，它在每个UL频带和DL频带中支持5MHz、10MHz、15MHz和20MHz的信号带宽。
在许多情况下，E-UTRA频带重叠。例如，不同频带可为已分配在不同的市场或区域中的公共频谱。例如，频带41是针对UL和DL两者均使用2496-2690MHz的频率范围的TDD频带，该频率范围与FDD频带7中UL和DL两者的范围重叠。当前，频带41在美国由斯普林特(Sprint)公司使用，而频带7在接壤国家加拿大内由罗杰无线公司(Rogers Wireless)使用。因此，在美国，2500MHz-2570MHz是TDD频谱，而在加拿大，相同频率范围为FDD频谱的UL。
通常，移动设备在附接到无线网络之后，将会扫描整个频带，搜索来自一个或多个基站的传输信息，并且通常在附接过程中，基站将会传输该网络的特征，诸如由网络使用的带宽以及使用的协议的细节。例如，如果在美国，LTE设备扫描整个2620MHz-2690MHz的范围，那么它会接收由eNodeB传输的LTE DL帧，该LTE DL帧将频谱识别为频带41，并且如果LTE设备支持频带41和TDD，那么它会尝试在那个频带中以TDD模式连接到eNodeB。类似地，如果在加拿大，LTE设备扫描整个2620MHz-2690MHz的范围，那么它会接收由eNodeB传输的LTE DL帧，该LTE DL帧将频谱识别为频带7，并且如果LTE设备支持频带7和FDD，那么它会尝试在频带7中以FDD模式连接到eNodeB。
全球范围内部署的最早的LTE网络使用FDD模式(如，威瑞森公司(Verizon)，美国电话电报公司(AT&T))，但TDD模式的使用在FDD覆盖较广的市场如美国(其中斯普林特公司正在部署TDD)以及尚未广泛覆盖LTE的市场如中国(其中中国移动正在部署TDD)中正在逐渐增加。在许多情况下，单个的运营商在不同频率下部署FDD和TDD(例如，斯普林特公司(Sprint)在美国以不同频率运营FDD LTE和TDD LTE)，并且可以提供能够以两个模式操作的LTE设备，具体采用哪种模式操作取决于使用的是哪个频带。
应当注意，LTE频带的E-UTRA列表决非最终列表，而是在随新的频谱被分配给移动运营商以及指定了使用该频谱的设备而演变。新的频带既在不存在当前频带与其频率部重叠的频谱中指定，也在频带与先前频带分配的频率重叠的频谱中指定。例如，在较早的700MHz FDD频带(诸如频带12、13、14和17)被指定几年后，添加了频带44、即跨越703-803MHz的TDD频带作为E-UTRA频带。
如从图6中可以看出的那样，大部分移动数据曾是语音数据(例如，2007年1季度)，这些数据是高度对称的。然而，随着2007年iPhone的问世和Android的迅速采用，以及2009年iPad的问世，非语音移动数据迅速超过语音数据的增长，以至于到2013年年中，语音数据仅占移动数据通信量的一小部分。预计，非语音数据会继续呈指数增涨，从而越来越使语音数据弱化。
如从图7中可以看出的那样，非语音移动数据主要由媒体支配，诸如视频流、音频流和Web浏览(其中的大多数包括视频流)。虽然一些媒体流是UL数据(例如，在视频会议过程中)，但大部分媒体流是DL数据，这产生了高度不对称的DL对UL数据使用。例如，在2013年5月28日的《金融时报》(Financial Times)文章“Asymmetry and the impending(US)spectrum crisis”(不对称性以及将到来的(US)频谱危机)中提到，“...据业内估计，下行链路中数据通信量与上行链路中数据通信量的比的范围为从约八比一(8∶1)至大得多的比。”该文章接着指出，FDD模式将相同量的频谱分配给每个DL和UL，因此在美国大量的FDD部署在处理此类不对称性上显得效率极低。又如，高通公司(Qualcomm)基于2009年哎多个现存网络测量结果而估计出，DL/UL通信量不对称性对于美国的运营商之一来说高达9∶1。(cfr.，高通公司，“1000x：more spectrum especially for small cells”(1000倍：尤其是用于较小小区的更多频谱)，2013年11月，http：//www.qualcomm.com/media/documents/files/1000x-more-spectrum-especially-for-small-cells.pdf)。因此，即使当大量利用FDD DL频谱(可能直至过载)时，UL频谱也会在很大程度上未被使用。
《金融时报》文章指出，TDD更适合于这种不对称性，因为其能够被配置成将更多时隙分配给DL数据而非UL数据。例如，在20MHz被分配给FDD(以10+10MHz)的情况下，DL数据吞吐量限于10MHz的最大全时使用(即使当UL数据需要远少于已分配给其的10MHz时)，而当20MHz被分配给TDD时，DL数据吞吐量可以在大部分的时间内使用所有20MHz，从而在小部分的时间内将20MHz分配给UL数据，更好地匹配于现今数据的使用特征。文章承认，不幸的是，大多现有美国移动频谱已致力于FDD模式，但敦促FCC在分配新的频谱时鼓励使用TDD。
虽然鉴于移动数据的越来越不对称的性质，TDD确实能够实现对新的频谱分配的更有效使用，但遗憾的是，现有FDD网络部署无法将操作模式改变为TDD，因为此类LTE FDD网络的大部分的用户拥有的设备仅支持FDD模式，而且如果网络被切换到TDD模式，那么他们的设备将无法联网。因此，随LTE数据使用变得越来越不对称，现有LTE FDD网络将出现DL拥塞增加的情况，而UL频谱将越来越无法得到充分利用(就8∶1的DL∶UL比，即2013年5月28日《金融时报》文章所估计的较低比率，其意味着如果DL信道得到完全利用，UL信道的仅1/8得到使用，相当于10MHz中的1.25MHz)。这种情况是极度浪费且低效的，尤其是鉴于实际移动频谱中的有限物理存在(例如，可穿透墙壁并以非视线方式良好传播的频率，诸如约450-2600MHz)和(越来越不对称的)移动数据的指数增长(例如，2013年2月思科公司(Cisco)VNI预测，现在到2018年，移动数据复合年增长率(CAGR)为61％，其中的大多数是视频流以及其他高度不对称的数据)。
附图说明
结合附图，可从以下具体实施方式更好地理解本发明，其中：
图1示出DIDO无线电接入网络(DRAN)的总体框架。
图2示出符合OSI模型和LTE标准的虚拟无线电实例(VRI)的协议栈。
图3示出在DIDO无线网络中扩展覆盖区域的相邻DRAN。
图4示出DRAN与相邻无线网络之间的越区切换。
图5示出DRAN与LTE蜂窝网络之间的越区切换。
图6是现有技术，示出2007-2013年移动频谱的语音使用情况和非语音使用情况。
图7是现有技术，示出2012年各应用类型的移动数据通信量份额。
图8是现有技术的FDD LTE操作模式和TDD LTE操作模式的比较情况。
图9示出与现有FDD网络并行使用UL频谱的新TDD网络。
图10是TDD LTE双工配置的现有技术图表。
图11示出与现有FDD网络并行使用DL频谱的新TDD网络。
图12示出与现有FDD网络并行使用UL和DL频谱的两个新TDD网络。
图13示出与现有FDD网络并行使用UL和DL频谱的新TDD网络。
具体实施方式
一种克服许多以上现有技术局限的解决方案是使用户设备在与当前使用的UL或DL FDD频谱相同的频谱中以TDD模式并行操作，使得TDD频谱使用得以受到协调，从而不与当前FDD频谱使用发生冲突。具体来说，在FDD UL信道中，存在越来越多未使用的频谱，而TDD设备可以在不影响现有FDD网络吞吐量的情况下，来使用该频谱。这还实现了TDD使用高度有效传播的UHF频谱，该有效UHF频谱在世界上的许多地域几乎完全被分配给FDD，从而将TDD归入传播有效性低得多的微波频带。
在另一个实施例中，使用户设备在与当前使用的UL或DL FDD频谱相同的频谱中以FDD模式来并行操作，使得UL信道和DL信道被翻转，并且每个网络频谱使用被协调，以不与其他网络频谱的使用发生冲突。鉴于每个网络的UL信道相较DL信道来说越来越无法得到充分利用，其允许每个网络的DL信道利用在其他网络的UL信道中未使用的频谱。
另外，在任一个实施例中，可通过采用如以下专利、专利申请和临时专利申请所描述的分布式输入分布式输出(“DIDO”)技术实现的一种或两种网络来大幅增加频谱效率，所有这些专利、专利申请和临时专利申请均被转让给本专利的受让人并且以引用方式并入。有时，这些专利、专利申请和临时专利申请在本文中有时统称为“相关专利和申请”。
名称为“Systems and Methods for Mapping Virtual Radio Instances intoPhysical Areas to Coherence in Distributed Antenna Wireless Systems”(用于在分布式天线无线系统中将虚拟无线电实例映射到物理相干区域中的系统和方法)的美国临时申请序列号61/937,273；
名称为“System and Method For Distributed Antenna WirelessCommunications”(用于分布式天线无线通信的系统和方法)的美国专利申请序列号14/156,254；
名称为“Systems and Methods for Exploiting Inter-cell MultiplexingGain in Wireless Cellular Systems Via Distributed Input Distributed OutputTechnology”(用于经由分布式输入分布式输出技术在无线蜂窝系统中利用小区间多路复用增益的系统和方法)的美国专利申请序列号14/086,700；
名称为“Systems And Methods To Coordinate Transmissions In DistributedWireless Systems Via User Clustering”(用于经由用户聚类在分布式无线系统中协调传输的系统和方法)的美国专利申请序列号14/023,302；
名称为“Systems and Methods for Radio Frequency Calibration ExploitingChannel Reciprocity in Distributed Input Distributed Output WirelessCommunications”(用于在分布式输入分布式输出无线通信中利用信道互易性进行射频校正的系统和方法)的美国专利申请序列号13/844,355；
名称为“Systems and Methods for Exploiting Inter-cell MultiplexingGain in Wireless Cellular Systems Via Distributed Input Distributed OutputTechnology”(用于经由分布式输入分布式输出技术在无线蜂窝系统中利用小区间多路复用增益的系统和方法)的美国专利申请序列号13/797,984；
名称为“Systems and Methods for Exploiting Inter-cell MultiplexingGain in Wireless Cellular Systems Via Distributed Input Distributed OutputTechnology”(用于经由分布式输入分布式输出技术在无线蜂窝系统中利用小区间多路复用增益的系统和方法)的美国专利申请序列号13/797,971；
名称为“Systems and Methods for Exploiting Inter-cell MultiplexingGain in Wireless Cellular Systems Via Distributed Input Distributed OutputTechnology”(用于经由分布式输入分布式输出技术在无线蜂窝系统中利用小区间多路复用增益的系统和方法)的美国专利申请序列号13/797,950；
名称为“Systems and Methods for wireless backhaul in distributed-inputdistributed-output wireless systems”(用于分布式输入分布式输出无线系统中的无线回程的系统和方法)的美国专利申请序列号13/633,702；
名称为“Systems and Methods to enhance spatial diversity indistributed-input distributed-output wireless systems”(用于在分布式输入分布式输出无线系统中增强空间分集的系统和方法)的美国专利申请序列号13/475,598；
名称为“System and Methods to Compensate for Doppler Effects inDistributed-Input Distributed Output Systems”(用于在分布式输入分布式输出系统中补偿多普勒效应的系统和方法)的美国专利申请序列号13/464,648；
名称为“System and Methods for planned evolution and obsolescence ofmultiuser spectrum”(用于多用户频谱的计划演进和退化的系统和方法)的美国专利申请序列号13/233,006；
名称为“Systems and Methods to Exploit Areas of Coherence in WirelessSystems”(用于在无线系统中利用相干区域的系统和方法)的美国专利申请序列号13/232,996；
名称为“System And Method For Managing Handoff Of A Client BetweenDifferent Distributed-Input-Distributed-Output(DIDO)Networks Based OnDetected Velocity Of The Client”(用于基于所检测到的客户端速度管理客户端在不同分布式输入分布式输出(DIDO)网络之间的越区切换的系统和方法)的美国专利申请序列号12/802,989；
名称为“Interference Management，Handoff，Power Control And LinkAdaptation In Distributed-Input Distributed-Output(DIDO)CommunicationSystems”(分布式输入分布式输出(DIDO)通信系统中的干扰管理、越区切换、功率控制和链路适配)的美国专利申请序列号12/802,988；
名称为“System And Method For Link adaptation In DIDO MulticarrierSystems”(用于DIDO多载波系统中的链路适配的系统和方法)的美国专利申请序列号12/802,975；
名称为“System And Method For Managing Inter-Cluster Handoff OfClients Which Traverse Multiple DIDO Clusters”(用于管理穿越多个DIDO集群的客户端的集群间切换的系统和方法)的美国专利申请序列号12/802,974；
名称为“System And Method For Power Control And Antenna Grouping In ADistributed-Input-Distributed-Output(DIDO)Network”(用于分布式输入分布式输出(DIDO)网络中的功率控制和天线分组的系统和方法)的美国专利申请序列号12/802,958；
2014年2月18日公告的名称为“System and Method for Distributed InputDistributed Output Wireless Communications”(用于分布式输入分布式输出无线通信的系统和方法)的美国专利号8,654,815；
2013年10月29日公告的名称为“System and Method for DIDO precodinginterpolation in multicarrier systems”(用于多载波系统中的DIDO预编码内插的系统和方法)的美国专利号8,571,086；
2013年9月24日公告的名称为“Systems and Methods to coordinatetransmissions in distributed wireless systems via user clustering”(用于经由用户聚类在分布式无线系统中协调传输的系统和方法)的美国专利号8,542,763；
2013年4月23日公告的名称为“System and Method for Distributed InputDistributed Output Wireless Communication”(用于分布式输入分布式输出无线通信的系统和方法)的美国专利号8,428,162；
2012年5月1日公告的名称为“System And Method For Adjusting DIDOInterference Cancellation Based On Signal Strength Measurements”(用于基于信号强度测量调整DIDO干扰消除的系统和方法)的美国专利号8,170,081；
2012年4月17日公告的名称为“System and Method For Distributed Input-Distributed Output Wireless Communications”(用于分布式输入分布式输出无线通信的系统和方法)的美国专利号8,160,121；
2011年2月8日公告的名称为“System and Method For Enhancing NearVertical Incidence Skywave(“NVIS”)Communication Using Space-Time Coding”(用于使用空时编码增强近垂直入射天波(“NVIS”)通信的系统和方法)的美国专利号7,885,354；
2010年5月4日公告的名称为“System and Method For Spatial-MultiplexedTropospheric Scatter Communications”(用于空间多路复用的对流层散射通信的系统和方法)的美国专利号7,711,030；
2009年12月22日公告的名称为“System and Method for DistributedInputDistributed Output Wireless Communication”(用于分布式输入分布式输出无线通信的系统和方法)的美国专利号7,636,381；
2009年12月15日公告的名称为“System and Method for Distributed InputDistributed Output Wireless Communication”(用于分布式输入分布式输出无线通信的系统和方法)的美国专利号7,633,994；
2009年10月6日公告的名称为“System and Method for Distributed InputDistributed Output Wireless Communication”(用于分布式输入分布式输出无线通信的系统和方法)的美国专利号7,599,420；
2008年8月26日公告的名称为“System and Method for Distributed InputDistributed Output Wireless Communication”(用于分布式输入分布式输出无线通信的系统和方法)的美国专利号7,418,053；
本发明公开了在活跃使用的频谱内进行并行频谱使用的系统和方法。一些实施例利用本专利受让人先前所公开的分布式输入分布式输出和MU-MAS技术。以下部分1和部分2中的公开内容对应于2014年2月7日提交的名称为“Systems and Methods for MappingVirtual Radio Instances into Physical Areas to Coherence in DistributedAntenna Wireless Systems”(用于在分布式天线无线系统中将虚拟无线电实例映射到物理相干区域中的系统和方法)的美国临时专利申请序列号61/937,273中的公开内容，并且与本发明有关。
1.用于将VRI映射到相干区域中的系统和方法
本发明的一个实施例公开了用于通过虚拟无线电实例(VRI)在网络与无线链路中多个相干区域之间，在相同频带内传送多个同时非干扰性数据流的系统和方法。在一个实施例中，该系统是多用户多天线系统(MU-MAS)，如图1中所示。图1中的颜色编码单元示出了如下文所述的数据源101、VRI 106和相干区域103之间的一对一映射。
1.1系统架构概述
在图1中，数据源101是携载本地或远程服务器中的网页内容或文件的数据文件或流，诸如文本、图像、声音、视频或其组合。在网络102与无线链路110中的每个相干区域103之间发送或接收一个或多个数据文件或流。在一个实施例中，该网络是互联网或任何有线或无线局域网。
相干区域是空间中的某个体积，其中来自MU-MAS的不同天线的波形以某种方式相干相加，使得在该相干区域内仅接收到一个VRI的数据输出112，而不会受到经由同一无线链路同时发送的其他VRI的其他数据输出的任何干扰。在本专利申请中，我们使用术语“相干区域”来描述我们此前的专利申请[名称为“Systems and Methods to Exploit Areasof Coherence in Wireless Systems”(用于在无线系统中利用相干区域的系统和方法)的美国专利申请序列号13/232,996]中所描述的相干体积或私人小区(例如，“pCellsTM”103)。在一个实施例中，相干区域对应于用户设备(UE)111或无线网络的订户的位置，这样每个订户被关联到一个或多个数据源101。相干区域的大小和形状可依据传播条件以及用于生成它们的MU-MAS预编码技术的类型而变化。在本发明的一个实施例中，MU-MAS预编码器动态调整相干区域的大小和形状，从而适应于变化的传播条件，同时以良好的链路可靠性将内容传送给用户。
首先通过网络102将数据源101发送到DIDO无线电接入网络(DRAN)104。接着，DRAN将数据文件或流转换为UE能够接收的数据格式，并将数据文件或流同时发送到多个相干区域，使得每个UE接收其自己的数据文件或流，而不会受到发送至其他UE的其他数据文件或流的干扰。DRAN包含作为所述网络与VRI 106之间的接口的网关105。VRI将正由网关路由的包转换为数据流112，该数据流作为原始数据或以包或帧结构的形式被馈送到MU-MAS基带单元。在一个实施例中，VRI包括开放系统互连(OSI)协议栈，该协议栈由若干层构成：应用层、表示层、会话层、传输层、网络层、数据链路层和物理层，如图2a所示。在另一个实施例中，VRI仅包括这些OSI层的子组。
在另一个实施例中，VRI是根据不同无线标准来定义。以举例而非限制的方式，第一VRI由来自GSM标准的协议栈构成，第二VRI由来自3G标准的协议栈构成，第三VRI由来自HSPA+标准的协议栈构成，第四VRI由来自LTE标准的协议栈构成，第五VRI由来自LTE-A标准的协议栈构成，而第六VRI由来自Wi-Fi标准的协议栈构成。在示例性实施例中，VRI包括由LTE标准定义的控制平面或用户平面协议栈。用户平面协议栈在图2b中示出。每个UE 202通过PHY、MAC、RLC和PDCP层与其自己的VRI 204通信，通过IP层与网关203通信，通过应用层与网络205通信。对于控制平面协议栈，UE还通过NAS(如LTE标准栈中所定义)层直接与移动性管理实体(MME)通信。
虚拟连接管理器(VCM)107负责分配UE的PHY层身份(例如，小区特定的无线电网络临时标识符，RNTI)、VRI和UE的验证和移动性。VRI的输出处的数据流112被馈送到虚拟无线电管理器(VRM)108。VRM包括调度器单元(为不同UE调度DL(下行链路)和UL(上行链路)包)、基带单元(例如，包括FEC编码器/解码器、调制器/解调器、资源网格构建器)和MU-MAS基带处理器(包括用于实现预编码操作的预编码逻辑)。在一个实施例中，数据流112是图2b中的PHY层的输出处的I/Q样本，其由MU-MAS基带处理器处理。在一个不同实施例中，数据流112是发送到调度器单元的MAC、RLC或PDCP包，该调度器单元将这些包转发到基带单元。基带单元将这些包转换为馈送到MU-MAS基带处理器的I/Q。
MU-MAS基带处理器是VRM的核心，其将来自M个VRI的M个I/Q样本转换为发送到N个接入点(AP)109的N个数据流113。在一个实施例中，数据流113是从AP 109经由无线链路110传输的N个波形的I/Q样本。在这个实施例中，AP由ADC/DAC、RF链和天线构成。在一个不同实施例中，数据流113是信息比特和MU-MAS预编码信息，这两者在AP处组合以生成经由无线链路110发送的N个波形。在这个实施例中，每个AP被装备有CPU、DSP或SoC，以在ADC/DAC单元之前执行额外的基带处理。
1.2支持移动性和越区切换
只要UE在AP的范围内，到目前为止所述的系统和方法就能工作。当UE从AP覆盖区域移出时，链路可能中断并且DRAN 301无法创建相干区域。为了扩展覆盖区域，这些系统可通过添加新AP来逐渐扩大。然而，VRM中可能没有足够的处理能力来支持新的AP，或者将新AP连接到同一VRM可能存在实际安装问题。在这些场景中，有必要添加相邻DRAN 302和303来支持新的AP，如图3所示。
在一个实施例中，一给定UE位于由第一DRAN 301和相邻DRAN 302服务的覆盖区域中。在这个实施例中，相邻DRAN 302仅会同来自第一DRAN 301的MU-MAS处理，为该UE执行MU-MAS基带处理。对于给定UE来说，由于该UE的VRI已经在第一DRAN 301内运行，因而VRI均不由相邻DRAN 302处理。为了能够实现第一DRAN与相邻DRAN之间的联合预编码，通过云VRM304和链路305在第一DRAN 301中的VRM与相邻DRAN 302中的VRM之间交换基带信息。链路305为任何有线链路(例如，光纤、DSL、线缆)或无线链路(例如，视线链路)，其可支持足够的连接质量(例如，足够低的延迟时间和足够的数据速率)，以避免MU-MAS预编码的性能降低。
在一个不同实施例中，一给定UE从第一DRAN 301的覆盖区域移出，进入相邻DRAN303的覆盖区域。在这个实施例中，关联到该UE的VRI从第一DRAN 301“瞬间移动(teleported)”到相邻DRAN 303。所谓VRI被瞬间移动或“VRI瞬间移动”，是指VRI状态信息从DRAN 301转移到DRAN 303，并且VRI停止在DRAN 301内执行，而开始在DRAN 303内执行。理想的是，VRI瞬间移动发生得足够快，使得从瞬间移动的VRI所服务的UE的角度来看，该UE没有感觉到其从该VRI接收的数据流发生任何间断。在一个实施例中，如果在VRI在被瞬间移动之后完全执行之前存在延迟，则在VRI瞬间移动开始之前，由此VRI服务的UE被置于某个状态，其中其不会中断其连接或以其他方式进入不期望的状态，直到该VRI在相邻DRAN303启动，且UE再次由正在执行的VRI服务为止。“VRI瞬间移动”由云VCM 306实现，该云VCM306将第一DRAN 301中的VCM连接到相邻DRAN 303中的VCM。VCM之间的有线或无线链路307并不具有与VRM之间的链路305相同的限制约束，因为它们仅仅携载数据而不影响MU-MAS预编码的性能。在本发明的同一实施例中，在第一DRAN 301与相邻DRAN 303之间采用另外的链路305来连接其VRM，该链路可支持所令人满意的连接质量(例如，足够低的延迟时间和足够的数据速率)，以避免MU-MAS预编码的性能降低。在本发明的一个实施例中，第一RAN和相邻DRAN的网关连接到云网关308，该云网关管理跨DRAN的所有网络地址(或IP地址)转换。
在本发明的一个实施例中，VRI瞬间移动发生在本申请所公开的DRAN网络与任何相邻无线网络401之间，如图4所示。以举例而非限制的方式，无线网络401是任何常规蜂窝(例如GSM、3G、HSPA+、LTE、LTE-A)或无线局域网络(WLAN，例如Wi-Fi)。随着VRI从DRAN瞬间移动到相邻无线网络401，UE在这两个网络之间越区切换并且其无线连接可持续。
在一个实施例中，相邻无线网络401是图5所示的LTE网络。在这个实施例中，云VCM502连接到LTE移动性管理实体(MME)501。关于在LTE与DRAN网络之间越区切换的每个UE的身份、验证和移动性的所有信息在MME 501与云VCM 502之间交换。在同一实施例中，MME连接到一个或多个eNodeB 503，该eNodeB 503通过无线蜂窝网络连接到UE 504。eNodeB通过服务网关(S-GW)505和包数据网络网关(P-GW)506连接到网络507。
2.用于DL和UL MU-MAS处理的系统和方法
典型的下行链路(DL)无线链路包括携载用于整个小区的信息的广播物理信道以及具有用于给定UE的信息和数据的专用物理信道构成。例如，LTE标准定义广播信道(诸如P-SS和S-SS(用于UE处的同步))、MIB和PDCCH，以及用于将数据载送到给定UE的信道(如PDSCH)。在本发明的一个实施例中，对所有LTE广播信道(例如，P-SS、S-SS、MIC、PDCCH)进行预编码，使得每个UE接收其自己的专用信息。在一个不同的实施例中，广播信道的一部分进行了预编码，一部分未进行预编码。以举例而非限制的方式，PDCCH包含广播信息以及专用于一个UE的信息，诸如用于将UE指向待在DL和上行链路(UL)信道上使用的资源块(RB)的DCI 1A和DCI 0。在一个实施例中，不对PDCCH的广播部分进行预编码，而以某种方式对包含DCI 1A和0的部分进行预编码，以使得每个UE获得其自己的关于携载数据的RB的专用信息。
在本发明的另一个实施例中，向数据信道的全部或仅一部分(如LTE系统中的PDSCH)应用预编码。通过在整个数据信道上来应用预编码，本专利申请公开的MU-MAS的一个实施例将整个带宽分配给每个UE，并且经由空间处理将多个UE的多个数据流分开。然而，在典型的场景中，大多数(如果不是全部的话)UE不需要整个带宽(例如，在20MHz的频谱中，用于TDD配置#2的峰值数据速率为每个UE约70Mbps)。接着，本专申请的MU-MAS的一个实施例如在OFDMA系统中的那样将DL RB细分成多个块，并且将每个块指定给某个UE子组。通过MU-MAS预编码将同一块内的所有UE分开。在另一个实施例中，MU-MAS将不同DL子帧分配给不同UE子组，从而分割DL，如在TDMA系统中的那样。在又一个实施例中，MU-MAS在UE子组当中将DL RB细分在多个块中，如在OFDMA系统中那样，并且还将不同DL子帧分配给不同UE子组，如在TDMA系统中的那样，从而利用OFDMA和TDMA两者来分割吞吐量。例如，如果在20MHz下，在TDD配置#2中存在10个AP，那么总DL容量为70Mbps×10＝700Mbps。如果存在10个UE，则每个UE可同时接收70Mbps。如果存在200个UE并且总吞吐量将被平均分割，则如果使用OFDMA、TDMA或其组合，这200个UE将被划分成20个具有10个UE的群组，由此每个UE将接收700Mbps/200＝3.5Mbps。又如，假如10个UE需要20Mbps并且其他UE平等地共享剩余吞吐量，则700Mbps中的20Mbps×10＝200Mbps将用于10个UE，剩下700Mbps-200Mbps＝500Mbps来在剩余200-10＝190个UE当中分割。因而，剩余190个UE中的每者将会接收500Mbps/190＝2.63Mbps。因此，可在本发明的MU-MAS系统中支持比AP多得多的UE，并且所有AP的总吞吐量可在多个UE当中分割。
在UL信道中，LTE标准定义常规的多路接入技术，诸如TDMA或SC-FDMA。在本发明的一个实施例中，以某种方式在DL上实现MU-MAS预编码以将UL授权指派给不同UE以能够实现TDMA和SC-FDMA多路访问技术。因此，可在比所存在的AP多得多的UE当中分割总UL吞吐量。
当存在比所存在的AP多的UE并且在UE当中分割总吞吐量时，如上文所述，在一个实施例中，，MU-MAS系统支持每个UE的VRI，并且VRM控制VRI，使得VRI按照用于细分总吞吐量的所选OFDMA、TDMA或SC-FDMA系统利用RB和资源授权。在另一个实施例中，一个或多个单独VRI可支持多个UE并且管理经由OFDMA、TDMA或SC-FDMA技术在这些UE当中进行吞吐量的调度。
在另一个实施例中，吞吐量调度是基于用户需求的负载平衡，使用许多现有技术中的任一种，这取决于系统的政策和性能目标。在另一个实施例中，调度是基于特定UE(例如，支付特定级的服务，从而确保一定的吞吐量水平)或特定数据类型(例如，电视服务用的视频)的服务质量(QoS)要求。
在另一实施例中，应用UL接收天线选择以改进链路质量。在这种方法中，在VRM处基于由UE发送的信令信息(例如，SRS、DMRS)来估计UL信道质量，并且VRM决定在UL上的用于不同UE的最佳接收天线。接着，VRM向每个UE指派一个接收天线以改进其链路质量。在不同实施例中，采用接收天线选择以减少由SC-FDMA方案引起的频带之间的交叉干扰。这种方法的一个显著优点是UE将在UL上仅向最靠近其位置的AP进行传输。在这个场景中，UE可显著地降低其传输到达最近AP的功率，由此增加电池寿命。在同一实施例中，针对UL数据信道和UL信令信道采用不同的功率比例因子。在一个示例性实施例中，与数据信道相比增大UL信令信道(例如，SRS)的功率以允许来自众多AP的UL CSI估计和MU-MAS预编码(在TDD系统中采用UL/DL信道互易性)，同时仍限制UL数据传输所需要的功率。在同一实施例中，由VRM通过DL信令基于均衡化去往/来自不同UE的相对功率的传输功率控制方法，调整UL信令和UL数据信道的功率电平。
在不同实施例中，在UL接收器处应用最大比值合并(MRC)以改进从每个UE到多个AP的信号质量。在不同的实施例中，迫零(ZF)或最小均方误差(MMSE)或串行干扰消除(SIC)或其他非线性的技术或与用于DL预编码相同的预编码技术可应用于UL，以区分从不同UE相干区域接收的数据流。在同一实施例中，向UL数据信道(例如，PUSCH)或UL控制信道(例如，PUCCH)或两者应用接收空间处理。
3.用于在活跃使用的频谱内进行并行频谱使用的系统和方法
如以上背景技术部分中所详细描述，并且如图6和图7所示，移动数据使用已从由高度对称的语音数据主导显著地改变为由高度不对称的非语音数据主导，尤其是媒体，如视频流。世界上的移动LTE部署大多数是FDD LTE，其物理层结构在图8的上半部分中示出，该结构具有固定的、对称的上行链路(“UL”)和下行链路(“DL”)信道，并且因此，当DL信道随着DL数据相对于UL数据呈指数地增长而变得越来越为拥塞时，UL数据信道变得越来越利用不足。
LTE标准还支持TDD LTE(也称为“TD-LTE”)，其物理层结构在图8的下半部分中示出，并且移动运营商可选择UL信道和DL信道对称(如在该图中所示)或不对称(例如，其中更多子帧被分配给DL或UL信道)，并且因此，当DL信道随着DL数据相对于UL数据呈指数地增长而变得越来越为拥塞时，该移动运营商可以选择相比UL将更多的子帧分配给DL。例如，在一个配置中，TD-LTE支持8∶1的DL∶UL比，从而将与UL相比8倍的子帧分配给DL。
除了TD-LTE在一个信道中是双向的这一事实之外，TD-LTE和FDD LTE的结构和细节几乎相同。在两种模式中，每帧具有10ms持续时间，并由每个为1ms的10个子帧构成。调制和编码方案几乎相同，并且协议栈的上层实际相同。在两种情况下，用户设备(“UE”)装置(例如，移动电话、平板电脑)的时间基准和频率基准由eNodeB(LTE基站协议栈)提供给所有装置(经由FDD LTE的DL信道，以及在TD-LTE的DL子帧期间)。
应当注意，在FDD LTE和TDD LTE都有的情况下，网络可被配置成使得UE仅在eNodeB许可这样做时可传输通过DL传输接收到的UL数据。因此，eNodeB不仅控制其何时传输DL数据，而且还控制UE何时可传输UL数据。
另外，特别地，在LTE FDD UE情况下，其接收器仅调谐至其DL信道，并且不具有调谐至其UL信道的接收器。因此，FDD UE对于在其UL信道中由另一装置传输的任何内容是“聋”的。
而且，在所有UE均为LTE UE(无论FDD还是TDD)的情况下，即使在它们的接收器被调谐成特定信道的情况下，除了旨在用于所有UE(或用于给定UE)的维持其时间基准以及与网络的连接，或者指令它们接收数据的时间和频率的某些控制信号之外，这些LTE UE忽略预期不针对它们的DL数据。或者，换句话说，与LTE UE相关的DL数据仅为作为控制信息的数据，或针对该UE的数据。在其他时间中，无论信道被使用为DL通向另一UE，还是根本不使用或出于LTE标准以外的目的使用，UE对于不是控制信息或不针对该UE的DL数据的任何DL传输来说是“聋”的。因此，LTE接收器(无论FDD还是TDD)仅接收预期用于所有UE或用于给定UE的控制数据，或者接收用于给定UE的数据。可忽略DL信道中的其他传输。
图9示出FDD和TDD网络如何可并行地使用活跃使用的FDD频谱。标记为“FDD LTE910”的顶部两条方框线示出在上行链路(“UL”)与下行链路(“DL”)信道两者中，由10个lms子帧间隔构成的一个LTE帧间隔(10ms)。此图表明不对称的数据传输类型，这种类型越来越为典型(例如，下行链路视频流)，其中存在远多于UL数据的DL数据。填充有斜线的具有实线外框的方框(例如，方框912和方框911)指示其中数据正被传输的子帧，空白的具有虚线外框的方框(例如，方框914)示出“空闲”子帧，其中无数据正被传输(即，在该子帧间隔之中，在信道中无传输)。方框911是10个DL子帧中的2个，这些子帧都充满数据。方框912示出有数据的1个UL子帧。而且，方框914是9个空闲UL子帧中的3个，它们都不没有数据传输。
图9中标记为“TDD LTE 920”的中间两条方框线示出由10个1ms子帧间隔构成的一个LTE帧间隔(10ms)，包括2个“特殊”子帧间隔，但不同于FDD LTE 910线，TDD LTE 920线中的两条方框线不仅彼此共享相同频谱，而且还共享与FDD上行链路相同的频谱。此图示出不对称的数据传输，其中存在4个DL子帧和3个UL子帧传输数据。填充有虚线的具有实线外框的方框(例如，方框921、方框922和方框923)指示其中数据正被传输的子帧，空白的具有虚线外框的方框(即，方框924)示出空闲子帧，其中无数据正被传输(即，在该子帧间隔之中，在信道中无传输)。方框921是4个DL子帧中的1个，所有这些子帧都充满数据。方框922示出3个UL子帧中的1个，所有这些子帧均具有数据。方框924是1个空闲UL子帧，它是空的。
图9中标记为“FDD+TDD LTE 930”的接下来的两条方框线示出由10个1ms子帧间隔构成的一个LTE帧间隔(10ms)，包括2个“特殊”子帧间隔，并且示出FDD LTE 910系统与TDDLTE 920系统之间的并行操作，其中TDD LTE 920系统共享与FDD LTE 910上行链路相同的频谱。两个系统不会彼此干扰，因为(a)在FDD LTE 910系统具有UL数据传输的子帧间隔912中，TDD LTE 920系统在其既非UL也非DL时具有空闲间隔924；(b)在其中TDD LTE 920系统在UL或DL方向上具有传输的子帧间隔(例如，921、923和922)中，FDD LTE 910系统具有无UL数据传输的空闲UL间隔(例如，空闲UI子帧914)。因此，两个系统使用相同频谱共存，而这两者之间并无干扰。
为了要并行使用相同频谱的FDD LTE 910和TDD LTE 920网络，它们操作必须通过设置用于并行操作两个频谱共享网络的一个eNodeB协调，或者通过操作现有TDD LTE 920网络的eNodeB和第二网络控制器(可能是eNodeB)或与LTE定时和帧框架结构兼容的另一系统的协调来进行协调，该另一系统如以上在部分1和部分2中以及在相关的专利和专利申请中公开的分布式输入分布式输出分布式天线MU-MAS C-RAN系统。在任何这些情况下，FDDLTE 910系统和TDD LTE 920系统两者的帧必须同步，这不仅就定时而言，也就子帧资源分配而言。例如，在图9的情况下，控制FDD LTE 910系统的系统将需要知道哪些子帧是可用于UL的TDD UL子帧(例如，将不与在UE处用于时间同步和频率同步的通过子帧#0和#5发送的TDD DL控制信号冲突)，并且将那些子帧中的一者用于其FDD UL子帧912。如果同一系统也控制TDD LTE 920系统，它将还必须确保在该子帧912期间不从TDD装置调度UL，而如果它不控制TDD LTE 920系统，那么它将必须通知控制TDD LTE 920的任何系统在该子帧912期间不从TDD装置调度UL。当然，可能存在如下情况：FDD LTE 910系统在帧时间中要求多于1个UL子帧，并且如果如此，那么其控制器将会针对其UL子帧使用3个TDD LTE 920子帧922的任一个或全部，并如上所述适当地控制或通知。应当注意，可能存在如下情况：在一些10ms帧内，所有UL子帧被分配到网络中的一者，而其他网络没有获得UI子帧。LTE装置并不期望能够每帧时间都传输UL数据(例如，当LTE网络拥塞时，LTE装置可能在UL子帧的即使一部分得到授权前，等待许多帧时间)，因此本发明的一个实施例在给定的帧中的所有可用TDD LTE920 UL子帧均由一个网络使用时(即，其他网络“缺少”UL子帧)起作用。然而，一个网络缺少过多的连续帧或使总的UL帧过少将会导致网络性能不佳(例如，低UL吞吐量或高的往返延迟)，并且在某些时刻，如果连接到网络的LTE装置寻求传输UL数据，则可能确定网络不可用并断开连接。由此，建立适当调度优先级和范例以平衡FDD LTE 910网络与TDD LTE 920之间的UL子帧资源可以实现最佳的总体网络性能和用户(和/或UE)体验。
一种可用于平衡UI子帧资源(并且符合网络运营商优先级)但在独立FDD LTE系统中不可得的工具是图10所示的TDD LTE双工配置。图9示出TDD LTE 920系统TDD LTE双工配置1，其中在1Oms帧中的10个子帧中，存在4个UL子帧、4个DL子帧和2个特殊子帧。如从图10可见，存在若干TDD LTE双工配置，这些可根据移动运营商需求和数据通信量情况使用，并用FDD LTE 910网络需求平衡UL子帧资源。TDD LTE双工配置还可在数据通信量情况变化时随时间而变化。任何TDD LTE双工配置可与本发明一起使用。例如，在配置1中，如图9所示，1个UL子帧已分配给FDD网络，3个UL子帧已指定给TDD网络。如果FDD网络突然需要更多UL吞吐量，那么在紧接着的下一帧时，2个UL子帧可分配给FDD，留下2个给TDD。因此，在FDD网络和TDD网络之间转换UL子帧分配可以是极具动态的。
应当注意，如果需要，FDD LTE 910网络与TDD LTE 920网络之间的UL资源分配可甚至比以子帧为基础的分配更精细。将单个子帧内的一些资源块分配到FDD装置并且将其他资源块分配到TDD装置是可能的。例如，LTE标准针对UL信道采用SC-FDMA多接入技术。因此，来自FDD装置和TDD装置的UL信道可经由SC-FDMA方案指定给同一子帧内的不同的资源块。
最后，在那些将为TDD LTE 920DL或特殊子帧的过程中，调度FDD LTE 910UL是可能的。一个考虑是由TDD LTE UE使用以维持它们连接并维持定时的TDD DL控制信号(例如，通过子帧#0和#5发送的P-SS和S-SS广播信令)必须具有足够规律性地由TDD LTE UE接收，否则UE可能断开连接。
图11示出在图9中和上文中所述的相同概念，不同之处在于共享信道是FDD DL信道，而非FDD UL信道。来自图9的相同子帧填充和外框指示在图11中使用，并且如从图中可见，FDD通信量状况倒转，其中FDD LTE 1110 UL信道中的所有子帧正用于数据，而FDD LTE1110 DL子帧中的仅1个用于数据，同时所有其他DL子帧是“空闲”的，并且不在传输数据。类似地，所有TDD LTE 1120 UL子帧用于数据，而除一个外的所有TDD LTE 1120 DL子帧用于数据，并且在这种情况下，TDD LTE 1120 LTE信道与FDD LTE 1110 DL信道频率相同。组合的FDD LTE 1110网络和TDD LTE 1120网络的结果在FDD+TDD LTE 1120信道中示出。就像图9中的例子那样，两个网络可由单个控制器或通过多个控制器的协调进行控制，其中它们之间的调度确保两个网络按网络运营商的需要操作，并对用户和用户装置而言有足够的性能。
应当注意，连接到FDD LTE 1110网络的FDD装置依赖DL传输以获取控制和定时信息以及数据，并且它们必须在充分规律的基础上接收足够的控制信号以保持连接。在本发明的一个实施例中，FDD装置使用通过DL子帧(例如，子帧#0和#5)由TDD LTE 1120网络发送的广播信令，以获得时间和频率同步。在不同的实施例中，携载广播信令的子帧#0和#5被指定给FDD LTE 1110网络，并且用于在每个FDD装置处获得时间和频率同步。
虽然如上所述，通常FDD DL信道要比FDD UL信道更为拥塞，但是移动运营商希望共享DL信道也可能是有原因的。例如，一些UL信道由频谱监管机构限定为仅UL用(例如，可能有关于输出功率干扰相邻频带的担忧)。另外，在移动运营商开始提供可与其FDD频谱兼容的TDD装置后，移动运营商将有可能发现这些装置比FDD装置更有效地使用频谱，并因此可停止FDD装置的销售。随着旧的FDD装置被逐渐替换，而TDD成为占越来越多份额的装置，运营商希望将其频谱越来越多地分配给TDD装置，但仍维持与市场上的剩余FDD装置的兼容性。
为此目的，随着越来越少FDD装置还在运作，运营商可能决定将UL频带和DL频带两者均用于TDD操作。这在图12中示出，其中FDD LTE 1210仅具有用于UL的一个子帧和用于DL的一个子帧，并且剩余子帧是空闲的。存在两个TDD LTE网络1220和1230，每个网络分别使用FDD LTE 1210UL信道和DL信道，从而导致三个网络共享两个信道，如FDD+TDD LTE 1240中所示。相同的灵活性和约束如先前所述同样适用，并且可以使用所有3个网络的单个控制器或多个控制器。两个TDD网络可独立地操作，或者通过使用载波聚合技术操作。
运营商还可以选择将TDD完全放弃，而在相同频谱中添加第二FDD网络作为现有FDD网络，但其中上行链路信道和下行链路信道交换。这在图13中示出，其中FDD LTE 1310网络以有利于DL信道非常不对称地使用，因此仅一个子帧用于UL，并且第二FDD LTE 1320网络也以有利于DL信道非常不对称地使用，但要注意，在图13中，FDD LTE 1320的信道分配交换，其中FDD下行链路信道示为处于FDD上行链路信道上方，这与FDD LTE 1310或者先前附图中所示的信道次序相反。在FDD LTE 1310和1320都有的情况下，DL信道使与其他网络使用的一个UL帧对应的一个DL子帧空闲。当网络如图所示被组合为FDD+TDD LTE 1230时，除了子帧1231和1232之外，两个信道中的所有子帧都是DL。因此，90％的子帧专用于DL，这能随演变相比针对UL和DL的对称频谱分配更好地匹配移动通信量情况。
另外，这个结构使得管理网络的一个或多个控制器能够动态地改变在逐子帧的基础上分配给每个网络的UL子帧和DL子帧的数量，从而提供极具动态的UL/DL通信量适配，尽管事实是FDD装置正在使用这两个网络。
就像先前所述的组合的FDD/TDD网络那样，对FDD模式适用相同的约束，因为LTE装置必须接收充足的控制和定时信息以保持连接并实现良好操作，并且它们需要充分规律且足够数量的UL帧。
两个FDD网络可独立地操作或通过载波聚合来操作。
在另一个实施例中，由现有活跃网络中的DL信道(例如，在图9、图11、图12和图13中的FDD LTE 910、FDD LTE 1110、FDD LTE 1210或FDD LTE 1310)传输的控制信息是由一个或多个新的网络使用并使用相同信道(例如，在图9、图11、图12和图13中的TDD LTE 920、TDD LTE 1120、TDD LTE 1220和TDD LTE 1230或FDD LTE 1320)来确定哪些子帧和/或资源块和/或其他间隔将会空闲。以此方式，一个或多个新的网络可确定何时能够传输(无论DL还是UL)而不干扰现有活跃网络。此实施例有可能在不对现有活跃网络做任何修改或不依赖至现有活跃网络的控制器的任何特殊连接的情况下并行使用该现有活跃网络的频谱，因为它仅是一个或多个新的网络的控制器从现有活跃网络接收已经在DL传输中的内容的问题。在另一个实施例中，对现有活跃网络做出的修改仅是确保其使一个或多个新的网络能够传输必需的控制和定时信息来维持与UE的连接。例如，现有活跃网络可被配置成在必需的定时和同步信息正被被传输期间不传输，但其他方面则无修改地进行操作。
虽然在相同频谱中并行支持网络的以上实施例使用LTE标准作为例子，但是类似技术也可采用其他无线协议。
4.与活跃使用的频谱并行地使用DIDO MU-MAS
如部分1和部分2以及在相关的专利和专利申请中公开的，DIDO MU-MAS技术显著增加无线网络容量，提高可靠性和每个装置的吞吐量，并有可能降低装置成本。
一般来说，DIDO技术在TDD网络下要比在FDD网络下操作更有效，因为UL和DL在相同信道中，并且因此UL信道中接收的对准传输(training transmission)可用于通过利用信道互易性来得到DL信道的信道状态信息。另外，如所描述，TDD模式在本质上更适合于移动数据不对称性，从而允许更有效的频谱利用。
鉴于世界上当前的LTE部署大多数是FDD，通过利用部分3中公开的技术，就有可能在针对FDD活跃地使用的频谱中部署TDD网络，并且DIDO可与该新的TDD网络一起使用，由此显著增加频谱容量。这尤其显著，因为UHF频率比微波频率传播得更好，但大多数的UHF移动频率已由FDD网络使用。通过在UHF频谱中将基于DIDO的TDD网络与现有FDD网络组合，就可部署特别有效的TDD网络。例如，频带44是703-803MHz的TDD频带，其在美国与大量700MHzFDD频带重叠。频带44装置可以在与700MHz FDD装置相同的频谱中并行使用，使得DIDO TDD在主要频谱中实现。
DIDO不向上述频谱组合技术添加大量新的约束。如图4所示，按照上述子帧(或资源块)共享技术，图1所示的DRAN 104将会取代覆盖区域中的现有eNodeB，或与现有eNodeB401协调。
特别地，，如果DIDO系统正在控制整个系统并为FDD网络提供eNodeB，那么DIDO可以使用对准信号诸如来自FDD装置的SRS UL，以便在同一时间并且在相同频带内经由空间处理来自多个现有FDD装置的UL进行解码，由此显著提高现有FDD UL信道的频谱效率，并且由于分布式DIDO AP很可能要比单个蜂窝基站更靠近UE而减少所需UL功率(和/或接收更好的信号质量)，而且还可利用信号组合技术诸如最大比值合并(MRC)或如先前就DIDO所述的其他技术。
因此，DIDO TDD可替换现有的eNodeB，并且以DIDO TDD装置使用现有频谱，同时还向已部署的现有FDD装置的UL应用DIDO益处。

Claims (10)

1.一种利用相同频谱的两个重叠的无线网络的系统，其包括：
多个无线用户设备UEs；
第一无线网络，其在大于任何一个基站BTS的范围的覆盖区域内包括第一多个无线基站BTSs，其中当所述UEs通过使用BTSs之间的蜂窝切换在整个所述覆盖区域中移动时，所述UEs保持持续耦合到所述第一无线网络；
第二无线网络，其在大于任何一个BTS的范围的覆盖区域内包括第二多个BTSs，其中当所述UEs在整个所述覆盖区域中移动时，所述UEs保持持续耦合到所述第二无线网络，而无需在BTSs之间进行切换；以及
所述第一无线网络以FDD模式操作且所述第二无线网络以TDD模式操作，其中所述多个UEs能够接收两个无线网络。
2.根据权利要求1所述的系统，还包括以TDD模式操作的所述第二无线网络在与所述第一无线网络的所述FDD上行链路相同的频谱中操作。
3.根据权利要求1所述的系统，还包括以TDD模式操作的所述第二无线网络在与所述第一无线网络的所述FDD下行链路相同的频谱中操作。
4.一种利用相同频谱的两个重叠的无线网络的系统，其包括：
多个无线用户设备UEs；
第一无线网络，其在大于任何一个基站BTS的范围的覆盖区域内包括第一多个无线基站BTSs，其中当所述UEs通过使用BTSs之间的蜂窝切换在整个所述覆盖区域中移动时，所述UEs保持持续耦合到所述第一无线网络；
第二无线网络，其在大于任何一个BTS的范围的覆盖区域内包括第二多个BTSs，其中当所述UEs在整个所述覆盖区域中移动，所述UEs保持持续耦合到所述第二无线网络，而无需在BTSs之间进行切换；以及
所述第一无线网络以FDD模式操作且所述第二无线网络以FDD模式操作，其中所述多个UEs能够接收两个无线网络。
5.根据权利要求4所述的系统，还包括所述第一无线网络的上行链路在与所述第二无线网络的下行链路相同的频谱中并行操作。
6.一种在利用相同频谱的两个重叠的无线网络的系统中执行的方法，所述系统包括：
多个无线用户设备UEs；
第一无线网络，其在大于任何一个基站BTS的范围的覆盖区域内包括第一多个无线基站BTSs，其中当所述UEs通过使用BTSs之间的蜂窝切换在整个所述覆盖区域中移动时，所述UEs保持持续耦合到所述第一无线网络；
第二无线网络，其在大于任何一个BTS的范围的覆盖区域内包括第二多个BTSs，其中当所述UEs在整个所述覆盖区域中移动，所述UEs保持持续耦合到所述第二无线网络，而无需在BTSs之间进行切换；以及
所述第一无线网络以FDD模式操作且所述第二无线网络以TDD模式操作，其中所述多个UEs能够接收两个无线网络。
7.根据权利要求6所述的方法，还包括以TDD模式操作的所述第二无线网络与所述第一无线网络的所述FDD上行链路在相同的频谱中操作。
8.根据权利要求6所述的方法，还包括以TDD模式操作的所述第二无线网络与所述第一无线网络的所述FDD下行链路在相同的频谱中操作。
9.一种在利用相同频谱的两个重叠的无线网络的系统中执行的方法，所述系统包括：
多个无线用户设备UEs；
第一无线网络，其在大于任何一个基站BTS的范围的覆盖区域内包括第一多个无线基站BTSs，其中当所述UEs通过使用BTSs之间的蜂窝切换在整个所述覆盖区域中移动时，所述UEs保持持续耦合到所述第一无线网络；
第二无线网络，其在大于任何一个BTS的范围的覆盖区域内包括第二多个BTSs，其中当所述UEs在整个所述覆盖区域中移动时，所述UEs保持持续耦合到所述第二无线网络，而无需在BTSs之间进行切换；以及
所述第一无线网络以FDD模式操作且所述第二无线网络以FDD模式操作，其中所述多个UEs能够接收两个无线网络。
10.根据权利要求9所述的方法，还包括所述第一无线网络的上行链路信道与所述第二无线网络的下行链路信道在相同的频谱中并行操作。
CN201580019760.XA 2014-04-16 2015-03-30 在活跃使用的频谱内进行并行频谱使用的系统和方法 Active CN106465465B (zh)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US201461980479P 2014-04-16 2014-04-16
US61/980,479 2014-04-16
US14/672,014 2015-03-27
US14/672,014 US11190947B2 (en) 2014-04-16 2015-03-27 Systems and methods for concurrent spectrum usage within actively used spectrum
PCT/US2015/023436 WO2015160497A1 (en) 2014-04-16 2015-03-30 Systems and methods for concurrent spectrum usage within actively used spectrum

Publications (2)

Publication Number Publication Date
CN106465465A CN106465465A (zh) 2017-02-22
CN106465465B true CN106465465B (zh) 2020-10-30

Family

ID=54323155

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201580019760.XA Active CN106465465B (zh) 2014-04-16 2015-03-30 在活跃使用的频谱内进行并行频谱使用的系统和方法

Country Status (13)

Country Link
US (2) US11190947B2 (zh)
EP (1) EP3132650A4 (zh)
JP (1) JP2017519390A (zh)
KR (3) KR20210148393A (zh)
CN (1) CN106465465B (zh)
AU (1) AU2015248161B2 (zh)
CA (1) CA2945987A1 (zh)
IL (1) IL248265B (zh)
MX (1) MX2016013512A (zh)
NZ (1) NZ725064A (zh)
RU (1) RU2714104C2 (zh)
SG (2) SG10201808922XA (zh)
WO (1) WO2015160497A1 (zh)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8542763B2 (en) 2004-04-02 2013-09-24 Rearden, Llc Systems and methods to coordinate transmissions in distributed wireless systems via user clustering
US10425134B2 (en) 2004-04-02 2019-09-24 Rearden, Llc System and methods for planned evolution and obsolescence of multiuser spectrum
US8654815B1 (en) 2004-04-02 2014-02-18 Rearden, Llc System and method for distributed antenna wireless communications
US9312929B2 (en) 2004-04-02 2016-04-12 Rearden, Llc System and methods to compensate for Doppler effects in multi-user (MU) multiple antenna systems (MAS)
US11394436B2 (en) 2004-04-02 2022-07-19 Rearden, Llc System and method for distributed antenna wireless communications
US9826537B2 (en) 2004-04-02 2017-11-21 Rearden, Llc System and method for managing inter-cluster handoff of clients which traverse multiple DIDO clusters
US10749582B2 (en) 2004-04-02 2020-08-18 Rearden, Llc Systems and methods to coordinate transmissions in distributed wireless systems via user clustering
US10200094B2 (en) 2004-04-02 2019-02-05 Rearden, Llc Interference management, handoff, power control and link adaptation in distributed-input distributed-output (DIDO) communication systems
US10277290B2 (en) 2004-04-02 2019-04-30 Rearden, Llc Systems and methods to exploit areas of coherence in wireless systems
US10985811B2 (en) 2004-04-02 2021-04-20 Rearden, Llc System and method for distributed antenna wireless communications
US11309943B2 (en) 2004-04-02 2022-04-19 Rearden, Llc System and methods for planned evolution and obsolescence of multiuser spectrum
US10886979B2 (en) 2004-04-02 2021-01-05 Rearden, Llc System and method for link adaptation in DIDO multicarrier systems
US9819403B2 (en) 2004-04-02 2017-11-14 Rearden, Llc System and method for managing handoff of a client between different distributed-input-distributed-output (DIDO) networks based on detected velocity of the client
US11451275B2 (en) 2004-04-02 2022-09-20 Rearden, Llc System and method for distributed antenna wireless communications
US9685997B2 (en) 2007-08-20 2017-06-20 Rearden, Llc Systems and methods to enhance spatial diversity in distributed-input distributed-output wireless systems
US11189917B2 (en) 2014-04-16 2021-11-30 Rearden, Llc Systems and methods for distributing radioheads
US11190947B2 (en) * 2014-04-16 2021-11-30 Rearden, Llc Systems and methods for concurrent spectrum usage within actively used spectrum
US11050468B2 (en) * 2014-04-16 2021-06-29 Rearden, Llc Systems and methods for mitigating interference within actively used spectrum
US10194346B2 (en) 2012-11-26 2019-01-29 Rearden, Llc Systems and methods for exploiting inter-cell multiplexing gain in wireless cellular systems via distributed input distributed output technology
US9973246B2 (en) * 2013-03-12 2018-05-15 Rearden, Llc Systems and methods for exploiting inter-cell multiplexing gain in wireless cellular systems via distributed input distributed output technology
US10488535B2 (en) 2013-03-12 2019-11-26 Rearden, Llc Apparatus and method for capturing still images and video using diffraction coded imaging techniques
US9923657B2 (en) 2013-03-12 2018-03-20 Rearden, Llc Systems and methods for exploiting inter-cell multiplexing gain in wireless cellular systems via distributed input distributed output technology
US10164698B2 (en) 2013-03-12 2018-12-25 Rearden, Llc Systems and methods for exploiting inter-cell multiplexing gain in wireless cellular systems via distributed input distributed output technology
RU2767777C2 (ru) 2013-03-15 2022-03-21 Риарден, Ллк Системы и способы радиочастотной калибровки с использованием принципа взаимности каналов в беспроводной связи с распределенным входом - распределенным выходом
US11290162B2 (en) 2014-04-16 2022-03-29 Rearden, Llc Systems and methods for mitigating interference within actively used spectrum
US10236958B2 (en) * 2016-03-21 2019-03-19 University Of Science And Technology Of China Method for signal transmission to multiple user equipments utilizing reciprocity of wireless channel
CN109951470B (zh) * 2019-03-12 2021-03-02 湖北大学 多计算设备分布式并行计算的信息下发和结果上传方法
EP3713121B1 (en) * 2019-03-20 2023-08-23 Vodafone IP Licensing Limited Multiple radio access technologies interference reduction

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102439891A (zh) * 2009-05-12 2012-05-02 翔跃通信公司 用于频分复用和时分复用通信模式的双模无线电装置
CN103069903A (zh) * 2010-08-13 2013-04-24 高通股份有限公司 用于不对称上行链路/下行链路频谱的后向兼容lte系统
CN104025684A (zh) * 2012-12-31 2014-09-03 华为技术有限公司 信息传输方法和装置

Family Cites Families (674)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3887925A (en) 1973-07-31 1975-06-03 Itt Linearly polarized phased antenna array
US4003016A (en) 1975-10-06 1977-01-11 The United States Of America As Represented By The Secretary Of The Navy Digital beamforming system
GB1578469A (en) 1977-11-05 1980-11-05 Marconi Co Ltd Tropospheric scatter radio communications systems
US4771289A (en) 1982-05-28 1988-09-13 Hazeltine Corporation Beamforming/null-steering adaptive array
US4564935A (en) 1984-01-10 1986-01-14 The United States Of America As Represented By The Secretary Of The Air Force Tropospheric scatter communication system having angle diversity
US6041365A (en) 1985-10-29 2000-03-21 Kleinerman; Aurel Apparatus and method for high performance remote application gateway servers
CA1307842C (en) 1988-12-28 1992-09-22 Adrian William Alden Dual polarization microstrip array antenna
US5088091A (en) 1989-06-22 1992-02-11 Digital Equipment Corporation High-speed mesh connected local area network
US5097485A (en) 1989-10-10 1992-03-17 Hughes Aircraft Company Hf high data rate modem
US5095500A (en) 1989-12-07 1992-03-10 Motorola, Inc. Cellular radiotelephone diagnostic system
CA2011298C (en) 1990-03-01 1999-05-25 Adrian William Alden Dual polarization dipole array antenna
GB2256948B (en) 1991-05-31 1995-01-25 Thomas William Russell East Self-focussing antenna array
US5315309A (en) 1991-09-06 1994-05-24 Mcdonnell Douglas Helicopter Company Dual polarization antenna
US5600326A (en) 1991-12-16 1997-02-04 Martin Marietta Corp. Adaptive digital beamforming architecture and algorithm for nulling mainlobe and multiple sidelobe radar jammers while preserving monopulse ratio angle estimation accuracy
TW214620B (en) 1992-04-13 1993-10-11 Ericsson Ge Mobile Communicat Calling channel in CDMA communications system
US5483667A (en) 1993-07-08 1996-01-09 Northern Telecom Limited Frequency plan for a cellular network
US6005856A (en) 1993-11-01 1999-12-21 Omnipoint Corporation Communication protocol for spread spectrum wireless communication system
US5619503A (en) 1994-01-11 1997-04-08 Ericsson Inc. Cellular/satellite communications system with improved frequency re-use
US5771449A (en) 1994-03-17 1998-06-23 Endlink, Inc. Sectorized multi-function communication system
US5787344A (en) 1994-06-28 1998-07-28 Scheinert; Stefan Arrangements of base transceiver stations of an area-covering network
SE513974C2 (sv) 1994-08-19 2000-12-04 Telia Ab Hastighetsbestämning av mobila enheter i telekommunikationssystem
JP3467888B2 (ja) 1995-02-08 2003-11-17 三菱電機株式会社 受信装置及び送受信装置
GB2300547B (en) 1995-05-02 1999-08-25 Plessey Semiconductors Ltd Wireless local area neworks
US6005516A (en) 1995-06-08 1999-12-21 Metawave Communications Corporation Diversity among narrow antenna beams
US5838671A (en) 1995-06-23 1998-11-17 Ntt Mobile Communications Network Inc. Method and apparatus for call admission control in CDMA mobile communication system
US5841768A (en) 1996-06-27 1998-11-24 Interdigital Technology Corporation Method of controlling initial power ramp-up in CDMA systems by using short codes
US5950124A (en) 1995-09-06 1999-09-07 Telxon Corporation Cellular communication system with dynamically modified data transmission parameters
US6421543B1 (en) 1996-01-29 2002-07-16 Ericsson Inc. Cellular radiotelephone base stations and methods using selected multiple diversity reception
US5809422A (en) 1996-03-08 1998-09-15 Watkins Johnson Company Distributed microcellular communications system
US5742253A (en) 1996-03-12 1998-04-21 California Institute Of Technology System and method for controlling the phase of an antenna array
EP0931388B1 (en) 1996-08-29 2003-11-05 Cisco Technology, Inc. Spatio-temporal processing for communication
US7764231B1 (en) 1996-09-09 2010-07-27 Tracbeam Llc Wireless location using multiple mobile station location techniques
FR2754968B1 (fr) 1996-10-22 1999-06-04 Sagem Terminal de telephonie mobile cellulaire localisable
US6732183B1 (en) 1996-12-31 2004-05-04 Broadware Technologies, Inc. Video and audio streaming for multiple users
US6049593A (en) 1997-01-17 2000-04-11 Acampora; Anthony Hybrid universal broadband telecommunications using small radio cells interconnected by free-space optical links
US5872814A (en) 1997-02-24 1999-02-16 At&T Wireless Services Inc. Method for linearization of RF transmission electronics using baseband pre-distortion in T/R compensation pilot signals
US6792259B1 (en) 1997-05-09 2004-09-14 Ronald J. Parise Remote power communication system and method thereof
US6308080B1 (en) 1997-05-16 2001-10-23 Texas Instruments Incorporated Power control in point-to-multipoint systems
US6008760A (en) 1997-05-23 1999-12-28 Genghis Comm Cancellation system for frequency reuse in microwave communications
US6925127B1 (en) 1997-07-22 2005-08-02 Ericsson Inc. Method and apparatus for subtracting multiple rays of multiple interfering received signals
US6519478B1 (en) 1997-09-15 2003-02-11 Metawave Communications Corporation Compact dual-polarized adaptive antenna array communication method and apparatus
US6760603B1 (en) 1997-09-15 2004-07-06 Kathrein-Werke Kg Compact dual-polarized adaptive antenna array communication method and apparatus
US6259687B1 (en) 1997-10-31 2001-07-10 Interdigital Technology Corporation Communication station with multiple antennas
US6061023A (en) 1997-11-03 2000-05-09 Motorola, Inc. Method and apparatus for producing wide null antenna patterns
US6014107A (en) 1997-11-25 2000-01-11 The United States Of America As Represented By The Secretary Of The Navy Dual orthogonal near vertical incidence skywave antenna
US7299071B1 (en) 1997-12-10 2007-11-20 Arraycomm, Llc Downlink broadcasting by sequential transmissions from a communication station having an antenna array
US6252912B1 (en) 1997-12-24 2001-06-26 General Dynamics Government Systems Corporation Adaptive predistortion system
JPH11252613A (ja) 1998-03-05 1999-09-17 Tsushin Hoso Kiko 移動体通信システム
FR2783126B1 (fr) 1998-09-03 2001-03-30 Cit Alcatel Passage de la couche microcellulaire a la couche macrocellulaire dans une cellule a deux couches d'un reseau de telecommunications
US6615024B1 (en) 1998-05-01 2003-09-02 Arraycomm, Inc. Method and apparatus for determining signatures for calibrating a communication station having an antenna array
US6411612B1 (en) 1998-05-19 2002-06-25 Harris Communication Selective modification of antenna directivity pattern to adaptively cancel co-channel interference in TDMA cellular communication system
DE19833967C2 (de) 1998-07-28 2001-02-08 Siemens Ag Empfangsdiversitätsverfahren und Funk-Kommunikationssystem mit Diversitätsempfang
US6377782B1 (en) 1999-03-01 2002-04-23 Mediacell, Inc. Method and apparatus for communicating between a client device and a linear broadband network
SE521606C2 (sv) 1999-03-05 2003-11-18 Ericsson Telefon Ab L M Metod och kretskopplat, rambaserat kommunikationssytem för bandbreddsanpassad användning av kommunikationslänk
US6442151B1 (en) 1999-04-06 2002-08-27 Ericsson Inc. System and method for variable reassignment of transmission channels
US6804311B1 (en) 1999-04-08 2004-10-12 Texas Instruments Incorporated Diversity detection for WCDMA
DE69900645T2 (de) 1999-05-26 2002-09-12 Motorola Inc Sende-Diversity Verfahren und System mit Phasenregelung für Funkübertragungssysteme
US6717930B1 (en) 2000-05-22 2004-04-06 Interdigital Technology Corporation Cell search procedure for time division duplex communication systems using code division multiple access
US6453177B1 (en) 1999-07-14 2002-09-17 Metawave Communications Corporation Transmitting beam forming in smart antenna array system
US6067290A (en) 1999-07-30 2000-05-23 Gigabit Wireless, Inc. Spatial multiplexing in a cellular network
US6275738B1 (en) 1999-08-19 2001-08-14 Kai Technologies, Inc. Microwave devices for medical hyperthermia, thermotherapy and diagnosis
US6400761B1 (en) 1999-09-15 2002-06-04 Princeton University Method and apparatus for adaptively compensating channel or system variations in precoded communications system
US6320853B1 (en) 1999-09-27 2001-11-20 Metawave Communications Corporation Method of phase recovery in cellular communication systems
US6799026B1 (en) 1999-11-09 2004-09-28 Kathrein-Werke Kg Handset diversity in wireless communications system
WO2001041479A1 (fr) 1999-11-24 2001-06-07 Fujitsu Limited Dispositif de commande de station de base, dispositif radio terminal et systeme de communication radio
US6901062B2 (en) 1999-12-01 2005-05-31 Kathrein-Werke Kg Adaptive antenna array wireless data access point
US6975666B2 (en) 1999-12-23 2005-12-13 Institut National De La Recherche Scientifique Interference suppression in CDMA systems
US6232921B1 (en) 2000-01-11 2001-05-15 Lucent Technologies Inc. Method and system for adaptive signal processing for an antenna array
US6888809B1 (en) 2000-01-13 2005-05-03 Lucent Technologies Inc. Space-time processing for multiple-input, multiple-output, wireless systems
JP2001217759A (ja) 2000-01-31 2001-08-10 Matsushita Electric Ind Co Ltd 無線通信装置及びアダプティブアレーによる無線通信方法
US7016649B1 (en) 2000-03-17 2006-03-21 Kathrein-Werke Kg Space-time and space-frequency hopping for capacity enhancement of mobile data systems
US6473467B1 (en) 2000-03-22 2002-10-29 Qualcomm Incorporated Method and apparatus for measuring reporting channel state information in a high efficiency, high performance communications system
US6448937B1 (en) 2000-04-25 2002-09-10 Lucent Technologies Inc. Phased array antenna with active parasitic elements
US7139324B1 (en) 2000-06-02 2006-11-21 Nokia Networks Oy Closed loop feedback system for improved down link performance
US20020027985A1 (en) 2000-06-12 2002-03-07 Farrokh Rashid-Farrokhi Parallel processing for multiple-input, multiple-output, DSL systems
US7248841B2 (en) 2000-06-13 2007-07-24 Agee Brian G Method and apparatus for optimization of wireless multipoint electromagnetic communication networks
JP3473555B2 (ja) 2000-06-30 2003-12-08 日本電気株式会社 送信電力制御方式、制御方法及び基地局、制御局並びに記録媒体
US6323823B1 (en) 2000-07-17 2001-11-27 Metawave Communications Corporation Base station clustered adaptive antenna array
US7194006B2 (en) 2000-07-18 2007-03-20 Kathrein-Werke Kg Directed maximum ratio combining methods and systems for high data rate traffic
KR100493152B1 (ko) 2000-07-21 2005-06-02 삼성전자주식회사 이동 통신 시스템에서의 전송 안테나 다이버시티 방법 및이를 위한 기지국 장치 및 이동국 장치
US6834043B1 (en) 2000-07-24 2004-12-21 Motorola, Inc. Method and device for exploiting transmit diversity in time varying wireless communication systems
GB2365239A (en) 2000-07-26 2002-02-13 Alenia Marconi Systems Ltd Near-vertical incidence skywave HF radar
US6859652B2 (en) 2000-08-02 2005-02-22 Mobile Satellite Ventures, Lp Integrated or autonomous system and method of satellite-terrestrial frequency reuse using signal attenuation and/or blockage, dynamic assignment of frequencies and/or hysteresis
US6920192B1 (en) 2000-08-03 2005-07-19 Lucent Technologies Inc. Adaptive antenna array methods and apparatus for use in a multi-access wireless communication system
US6895258B1 (en) 2000-08-14 2005-05-17 Kathrein-Werke Kg Space division multiple access strategy for data service
US6330460B1 (en) 2000-08-21 2001-12-11 Metawave Communications Corporation Simultaneous forward link beam forming and learning method for mobile high rate data traffic
US6718184B1 (en) 2000-09-28 2004-04-06 Lucent Technologies Inc. Method and system for adaptive signal processing for an antenna array
US7242964B1 (en) 2000-09-28 2007-07-10 Lucent Technologies Inc. Shaping of EM field for transmission to multiple terminals
US6684366B1 (en) 2000-09-29 2004-01-27 Arraycomm, Inc. Multi-rate codec with puncture control
US6760599B1 (en) 2000-09-29 2004-07-06 Arraycomm, Inc. Method and apparatus for selecting a base station
US7519011B2 (en) 2000-09-29 2009-04-14 Intel Corporation Frame structure for radio communications system
US7430197B1 (en) 2000-09-29 2008-09-30 Arraycomm, Llc Radio communications system with a shared broadcast channel
US6795413B1 (en) 2000-09-29 2004-09-21 Arraycomm, Inc. Radio communications system in which traffic is transmitted on the broadcast channel
US7158493B1 (en) 2000-09-29 2007-01-02 Arraycomm, Llc Radio communications system with a minimal broadcast channel
US6996060B1 (en) 2001-03-20 2006-02-07 Arraycomm, Inc. Closing a communications stream between terminals of a communications system
US7085240B2 (en) 2000-10-03 2006-08-01 Kathrein-Werke Kg Directed maximum ratio combining and scheduling of high rate transmission for data networks
US6718180B1 (en) 2000-10-24 2004-04-06 Telefonaktiebolaget Lm Ericsson (Publ) Power level convergence in a communications system
US7002929B2 (en) 2001-01-19 2006-02-21 Raze Technologies, Inc. Wireless access system for allocating and synchronizing uplink and downlink of TDD frames and method of operation
US8670390B2 (en) 2000-11-22 2014-03-11 Genghiscomm Holdings, LLC Cooperative beam-forming in wireless networks
US6836673B1 (en) 2000-12-22 2004-12-28 Arraycomm, Inc. Mitigating ghost signal interference in adaptive array systems
US6870515B2 (en) 2000-12-28 2005-03-22 Nortel Networks Limited MIMO wireless communication system
US7978673B1 (en) 2000-12-29 2011-07-12 Intel Corporation Channel allocation based on random plus planned processes
US6888795B2 (en) 2000-12-30 2005-05-03 Durham Logistics Llc Resource allocation in a circuit switched network
GB0102316D0 (en) 2001-01-30 2001-03-14 Koninkl Philips Electronics Nv Radio communication system
US6697644B2 (en) 2001-02-06 2004-02-24 Kathrein-Werke Kg Wireless link quality using location based learning
US7116722B2 (en) 2001-02-09 2006-10-03 Lucent Technologies Inc. Wireless communication system using multi-element antenna having a space-time architecture
FR2821217B1 (fr) 2001-02-21 2003-04-25 France Telecom Procede et systeme de codage-decodage iteratif de flux de donnees numeriques codees par combinaisons spatio-temporelles, en emission et reception multiple
US6847832B2 (en) 2001-03-09 2005-01-25 Kathrein-Werke Kg System and method for providing phase matching with optimized beam widths
JP2002281551A (ja) 2001-03-16 2002-09-27 Mitsubishi Electric Corp データ送信装置、送信許可装置、データ送信方法及び送信許可方法
US7027415B1 (en) 2001-03-20 2006-04-11 Arraycomm, Inc. Dynamic allocation and de-allocation of multiple communication channels for bandwidth on-demand
US7227855B1 (en) 2001-03-20 2007-06-05 Arraycomm Llc Resource allocation in a wireless network
US7339906B1 (en) 2001-03-20 2008-03-04 Arraycomm, Llc Opening a communications stream between a user terminal and a base station
US7406315B2 (en) 2001-03-20 2008-07-29 Arraycomm Llc Method and apparatus for resource management in a wireless data communication system
US6771706B2 (en) 2001-03-23 2004-08-03 Qualcomm Incorporated Method and apparatus for utilizing channel state information in a wireless communication system
US20020176485A1 (en) 2001-04-03 2002-11-28 Hudson John E. Multi-cast communication system and method of estimating channel impulse responses therein
JP3631698B2 (ja) 2001-04-09 2005-03-23 日本電信電話株式会社 Ｏｆｄｍ信号伝送システム、ｏｆｄｍ信号送信装置及びｏｆｄｍ信号受信装置
US10425135B2 (en) 2001-04-26 2019-09-24 Genghiscomm Holdings, LLC Coordinated multipoint systems
US6611231B2 (en) 2001-04-27 2003-08-26 Vivato, Inc. Wireless packet switched communication systems and networks using adaptively steered antenna arrays
CN1633780A (zh) 2001-05-01 2005-06-29 皇家菲利浦电子有限公司 无线通信方案
EP1255369A1 (en) 2001-05-04 2002-11-06 TELEFONAKTIEBOLAGET LM ERICSSON (publ) Link adaptation for wireless MIMO transmission schemes
US6785341B2 (en) 2001-05-11 2004-08-31 Qualcomm Incorporated Method and apparatus for processing data in a multiple-input multiple-output (MIMO) communication system utilizing channel state information
EP1391070B1 (en) 2001-05-15 2008-06-04 Nokia Corporation A method of channel allocation for a mobile terminal moving in a cellular communication network
US6662024B2 (en) 2001-05-16 2003-12-09 Qualcomm Incorporated Method and apparatus for allocating downlink resources in a multiple-input multiple-output (MIMO) communication system
US7047016B2 (en) 2001-05-16 2006-05-16 Qualcomm, Incorporated Method and apparatus for allocating uplink resources in a multiple-input multiple-output (MIMO) communication system
US7072413B2 (en) 2001-05-17 2006-07-04 Qualcomm, Incorporated Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel inversion
US20020193146A1 (en) 2001-06-06 2002-12-19 Mark Wallace Method and apparatus for antenna diversity in a wireless communication system
US7031754B2 (en) 2001-06-11 2006-04-18 Kathrein-Werke Kg Shapable antenna beams for cellular networks
US7096040B1 (en) 2001-06-11 2006-08-22 Kathrein-Werke Kg Passive shapable sectorization antenna gain determination
DE60224672T2 (de) 2001-06-21 2009-01-22 Koninklijke Philips Electronics N.V. Übertragungsverfahren und einrichtung in einem funkkommunikationsnetz
US7027523B2 (en) 2001-06-22 2006-04-11 Qualcomm Incorporated Method and apparatus for transmitting data in a time division duplexed (TDD) communication system
GB0115937D0 (en) 2001-06-29 2001-08-22 Koninkl Philips Electronics Nv Radio communication system
JP2003018054A (ja) 2001-07-02 2003-01-17 Ntt Docomo Inc 無線通信方法及びシステム並びに通信装置
US20030012315A1 (en) 2001-07-06 2003-01-16 John Fan System and method for multistage error correction coding wirelessly transmitted information in a multiple antennae communication system
US7209511B2 (en) 2001-08-31 2007-04-24 Ericsson Inc. Interference cancellation in a CDMA receiving system
US6996380B2 (en) 2001-07-26 2006-02-07 Ericsson Inc. Communication system employing transmit macro-diversity
US20030045297A1 (en) 2001-08-24 2003-03-06 Dent Paul W. Communication system employing channel estimation loop-back signals
US7197282B2 (en) 2001-07-26 2007-03-27 Ericsson Inc. Mobile station loop-back signal processing
US7224942B2 (en) 2001-07-26 2007-05-29 Telefonaktiebolaget Lm Ericsson (Publ) Communications system employing non-polluting pilot codes
US7339908B2 (en) 2001-07-31 2008-03-04 Arraycomm, Llc. System and related methods to facilitate delivery of enhanced data services in a mobile wireless communications environment
US7363376B2 (en) 2001-07-31 2008-04-22 Arraycomm Llc Method and apparatus for generating an identifier to facilitate delivery of enhanced data services in a mobile computing environment
US7117014B1 (en) 2001-08-17 2006-10-03 Kathrein-Werke Kg System and method for selecting optimized beam configuration
US6731936B2 (en) * 2001-08-20 2004-05-04 Qualcomm Incorporated Method and system for a handoff in a broadcast communication system
US20030048753A1 (en) 2001-08-30 2003-03-13 Ahmad Jalali Method and apparatus for multi-path elimination in a wireless communication system
US7149254B2 (en) 2001-09-06 2006-12-12 Intel Corporation Transmit signal preprocessing based on transmit antennae correlations for multiple antennae systems
US6956537B2 (en) 2001-09-12 2005-10-18 Kathrein-Werke Kg Co-located antenna array for passive beam forming
US8086271B2 (en) 2001-09-12 2011-12-27 Ericsson Inc. Network architecture for mobile communication network with billing module for shared resources
US7155192B2 (en) 2001-09-25 2006-12-26 At&T Corp. Multi-antenna/multi-receiver array diversity system
US7068704B1 (en) 2001-09-26 2006-06-27 Itt Manufacturing Enterpprises, Inc. Embedded chirp signal for position determination in cellular communication systems
US7027837B1 (en) 2001-09-27 2006-04-11 Arraycomm Llc. Antenna array for point-to-point microwave radio system
US7336626B1 (en) 2001-09-28 2008-02-26 Arraycomm, Inc Operating time division duplex (TDD) wireless systems in paired spectrum (FDD) allocations
US7313617B2 (en) 2001-09-28 2007-12-25 Dale Malik Methods and systems for a communications and information resource manager
US7369841B1 (en) 2001-09-28 2008-05-06 Durham Logistics Llc Wireless network infrastructure
US8428605B2 (en) 2001-10-11 2013-04-23 Innovative Wireless Sweden Ab Adaptive broadband platforms and methods of operation
US6956907B2 (en) 2001-10-15 2005-10-18 Qualcomm, Incorporated Method and apparatus for determining power allocation in a MIMO communication system
US20030125040A1 (en) 2001-11-06 2003-07-03 Walton Jay R. Multiple-access multiple-input multiple-output (MIMO) communication system
US7181167B2 (en) 2001-11-21 2007-02-20 Texas Instruments Incorporated High data rate closed loop MIMO scheme combining transmit diversity and data multiplexing
RU2304352C2 (ru) 2001-11-29 2007-08-10 Квэлкомм Инкорпорейтед Способ и устройство для определения логарифмического отношения правдоподобия с предварительным кодированием
US8396368B2 (en) 2009-12-09 2013-03-12 Andrew Llc Distributed antenna system for MIMO signals
US7154936B2 (en) 2001-12-03 2006-12-26 Qualcomm, Incorporated Iterative detection and decoding for a MIMO-OFDM system
US6760388B2 (en) 2001-12-07 2004-07-06 Qualcomm Incorporated Time-domain transmit and receive processing with channel eigen-mode decomposition for MIMO systems
US20030114165A1 (en) 2001-12-07 2003-06-19 Mills Donald Charles Method for enhanced wireless signal distribution
JP2003179948A (ja) 2001-12-10 2003-06-27 Furukawa Electric Co Ltd:The Ｃａｔｖシステムの監視システム
US7139593B2 (en) 2001-12-14 2006-11-21 Samsung Electronics Co., Ltd. System and method for improving performance of an adaptive antenna array in a vehicular environment
US20050085267A1 (en) 2001-12-26 2005-04-21 Paul Lemson Modular base station antenna control system
JP4052835B2 (ja) 2001-12-28 2008-02-27 株式会社日立製作所 多地点中継を行う無線伝送システム及びそれに使用する無線装置
JP3840412B2 (ja) 2001-12-28 2006-11-01 株式会社日立製作所 無線端末装置
US7849173B1 (en) 2001-12-31 2010-12-07 Christopher Uhlik System for on-demand access to local area networks
GB2388264A (en) 2002-01-10 2003-11-05 Roke Manor Research GPS based networked time synchronised unit
US20030220112A1 (en) 2002-01-16 2003-11-27 Engim, Incorporated System and method for enabling the use of spatially distributed multichannel wireless access points/base stations
US7020482B2 (en) 2002-01-23 2006-03-28 Qualcomm Incorporated Reallocation of excess power for full channel-state information (CSI) multiple-input, multiple-output (MIMO) systems
US6654521B2 (en) 2002-01-23 2003-11-25 Teraxion Inc. Diffraction compensation of FBG phase masks for multi-channel sampling applications
US7813311B2 (en) 2002-02-05 2010-10-12 Interdigital Technology Corporation Method and apparatus for synchronizing base stations
US7079809B1 (en) 2002-02-07 2006-07-18 Kathrein-Werke Kg Systems and methods for providing improved wireless signal quality using diverse antenna beams
US7116944B2 (en) 2002-02-07 2006-10-03 Lucent Technologies Inc. Method and apparatus for feedback error detection in a wireless communications systems
US7218934B2 (en) 2002-02-14 2007-05-15 Nokia Corporation Mobile station speed estimation
US6862271B2 (en) 2002-02-26 2005-03-01 Qualcomm Incorporated Multiple-input, multiple-output (MIMO) systems with multiple transmission modes
US7039356B2 (en) 2002-03-12 2006-05-02 Blue7 Communications Selecting a set of antennas for use in a wireless communication system
JP4166026B2 (ja) 2002-03-22 2008-10-15 三洋電機株式会社 無線装置、空間パス制御方法および空間パス制御プログラム
US7197084B2 (en) 2002-03-27 2007-03-27 Qualcomm Incorporated Precoding for a multipath channel in a MIMO system
US6801580B2 (en) 2002-04-09 2004-10-05 Qualcomm, Incorporated Ordered successive interference cancellation receiver processing for multipath channels
WO2003090012A2 (en) 2002-04-15 2003-10-30 America Online, Inc. Dynamically managing and reconfiguring wireless mesh networks
ATE338388T1 (de) 2002-04-30 2006-09-15 Motorola Inc Drahtlose kommunikation mittels vielfachsende- und vielfachempfangs-antennenanordnung
EP1359684A1 (en) 2002-04-30 2003-11-05 Motorola Energy Systems Inc. Wireless transmission using an adaptive transmit antenna array
KR100605824B1 (ko) 2002-05-13 2006-07-31 삼성전자주식회사 부호분할다중접속 이동통신시스템의 방송서비스 방법
US6950056B2 (en) 2002-05-13 2005-09-27 Honeywell International Inc. Methods and apparatus for determination of a filter center frequency
JP4178501B2 (ja) 2002-05-21 2008-11-12 日本電気株式会社 アンテナ送受信システム
DE10223564A1 (de) 2002-05-27 2003-12-11 Siemens Ag Verfahren zur Übertragung von Informationen in einem Funkkommunikationssystem mit Sendestation und Empfangsstationen mit jeweils einer Antenne mit mehreren Antennenelementen und Funkkommunikationssystem
US7269231B2 (en) 2002-05-31 2007-09-11 Lucent Technologies Inc. System and method for predistorting a signal using current and past signal samples
US6794939B2 (en) 2002-05-31 2004-09-21 Lucent Technologies Inc. Signal predistortion using a combination of multiple predistortion techniques
US7421039B2 (en) 2002-06-04 2008-09-02 Lucent Technologies Inc. Method and system employing antenna arrays
US6791508B2 (en) 2002-06-06 2004-09-14 The Boeing Company Wideband conical spiral antenna
TWI225339B (en) 2002-06-06 2004-12-11 Via Telecom Co Ltd Power control of plural packet data control channels
FR2841068B1 (fr) 2002-06-14 2004-09-24 Comsis Procede pour decoder des codes espace-temps lineaires dans un systeme de transmission sans fil multi-antennes, et decodeur mettant en oeuvre un tel procede
US7184713B2 (en) 2002-06-20 2007-02-27 Qualcomm, Incorporated Rate control for multi-channel communication systems
US20030235146A1 (en) 2002-06-21 2003-12-25 Yunnan Wu Bezout precoder for transmitter in MIMO communications network
US20040002835A1 (en) 2002-06-26 2004-01-01 Nelson Matthew A. Wireless, battery-less, asset sensor and communication system: apparatus and method
US7920590B2 (en) 2002-07-12 2011-04-05 Spyder Navigations L.L.C. Wireless communications system having built-in packet data compression and support for enabling non-standard features between network elements
US7751843B2 (en) 2002-07-29 2010-07-06 Qualcomm Incorporated Reducing interference with a multiple format channel in a communication system
US7072693B2 (en) 2002-08-05 2006-07-04 Calamp Corp. Wireless communications structures and methods utilizing frequency domain spatial processing
GB2392065B (en) 2002-08-15 2004-12-29 Toshiba Res Europ Ltd Signal decoding methods and apparatus
ATE421809T1 (de) 2002-08-22 2009-02-15 Imec Inter Uni Micro Electr Verfahren zur mimo-übertragung für mehrere benutzer und entsprechende vorrichtungen
US7031336B2 (en) 2002-08-26 2006-04-18 Colubris Networks, Inc. Space-time-power scheduling for wireless networks
US8194770B2 (en) 2002-08-27 2012-06-05 Qualcomm Incorporated Coded MIMO systems with selective channel inversion applied per eigenmode
JP4110519B2 (ja) 2002-09-05 2008-07-02 ソニー株式会社 空間分割多重アクセス制御方法、無線通信システム、基地局、および移動局
US7633894B2 (en) 2002-09-05 2009-12-15 The Regents Of The University Of California Scheduling methods for wireless networks
GB2393618B (en) 2002-09-26 2004-12-15 Toshiba Res Europ Ltd Transmission signals methods and apparatus
US7352774B2 (en) 2002-09-30 2008-04-01 Arraycomm, Llc Multiplexing different types of data sequences
US7729316B2 (en) 2002-09-30 2010-06-01 Intel Corporation Receiving signals on a channel used for traffic and access in a communications system
US7606192B2 (en) 2002-09-30 2009-10-20 Intel Corporation Transmitting signals on a channel used for traffic and access in a communications system
US7492743B2 (en) 2002-09-30 2009-02-17 Intel Corporation Assigning training sequences based on spatial channels in a wireless communications system
US7412212B2 (en) 2002-10-07 2008-08-12 Nokia Corporation Communication system
GB2394389B (en) 2002-10-15 2005-05-18 Toshiba Res Europ Ltd Equalisation apparatus and methods
US7366519B2 (en) 2002-10-21 2008-04-29 Hong Kong Applied Science And Technology Research Institute Co., Ltd. Systems and methods for managing wireless communications using link space information
DE60316178T2 (de) 2002-10-24 2008-06-05 Nakagawa Laboratories, Inc. Kommunikationsvorrichtung mit beleuchtungslicht
US8320301B2 (en) 2002-10-25 2012-11-27 Qualcomm Incorporated MIMO WLAN system
US7986742B2 (en) 2002-10-25 2011-07-26 Qualcomm Incorporated Pilots for MIMO communication system
US8208364B2 (en) 2002-10-25 2012-06-26 Qualcomm Incorporated MIMO system with multiple spatial multiplexing modes
US7477920B2 (en) 2002-10-25 2009-01-13 Intel Corporation System and method for automatically configuring and integrating a radio base station into an existing wireless cellular communication network with full bi-directional roaming and handover capability
US7082305B2 (en) 2002-11-22 2006-07-25 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for generating a neighbor cell list
FR2848747A1 (fr) 2002-12-16 2004-06-18 France Telecom Procede et dispositif multi-antenne de transmission de signaux
US7154960B2 (en) 2002-12-31 2006-12-26 Lucent Technologies Inc. Method of determining the capacity of each transmitter antenna in a multiple input/multiple output (MIMO) wireless system
CN100454795C (zh) 2003-01-03 2009-01-21 华为技术有限公司 一种自适应空时闭环发射分集方法及其系统
US6919857B2 (en) 2003-01-27 2005-07-19 Ethertronics, Inc. Differential mode capacitively loaded magnetic dipole antenna
US20040176097A1 (en) 2003-02-06 2004-09-09 Fiona Wilson Allocation of sub channels of MIMO channels of a wireless network
US7184492B2 (en) 2003-02-10 2007-02-27 Ericsson Inc. Using antenna arrays in multipath environment
GB2398455B (en) * 2003-02-11 2007-09-26 Ipwireless Inc Method, base station and mobile station for TDD operation in a communication system
US7369876B2 (en) 2003-03-04 2008-05-06 Samsung Electronics Co., Ltd. Apparatus and method for estimating a velocity of a mobile station in a mobile communication system
US7197082B2 (en) 2003-03-20 2007-03-27 Lucent Technologies Inc. Linear transformation of symbols to at least partially compensate for correlation between antennas in space time block coded systems
US7327795B2 (en) 2003-03-31 2008-02-05 Vecima Networks Inc. System and method for wireless communication systems
US7389096B2 (en) 2003-04-07 2008-06-17 Bellow Bellows Llc Monitoring system using multi-antenna transceivers
US7099678B2 (en) 2003-04-10 2006-08-29 Ipr Licensing, Inc. System and method for transmit weight computation for vector beamforming radio communication
FR2854020B1 (fr) 2003-04-17 2005-09-09 Wavecom Procede de transmission de donnees radio mettant en oeuvre plusieurs motifs de pilotes distincts, procede de reception, systeme, mobile et station de base correspondants
SE0301259D0 (sv) * 2003-04-24 2003-04-24 Ericsson Telefon Ab L M Improvements in or relating to distributed radio units
KR100957395B1 (ko) 2003-05-23 2010-05-11 삼성전자주식회사 레벨 교차율을 이용한 속도추정 장치 및 방법
CN1820424A (zh) 2003-06-02 2006-08-16 高通股份有限公司 带有混合均衡器和rake接收机的接收设备以及相应的接收方法
US7646802B2 (en) 2003-06-02 2010-01-12 Qualcomm Incorporated Communication receiver with hybrid equalizer
US8284075B2 (en) 2003-06-13 2012-10-09 Baker Hughes Incorporated Apparatus and methods for self-powered communication and sensor network
US7499548B2 (en) 2003-06-24 2009-03-03 Intel Corporation Terminal authentication in a wireless network
US7302278B2 (en) 2003-07-03 2007-11-27 Rotani, Inc. Method and apparatus for high throughput multiple radio sectorized wireless cell
US9179495B1 (en) 2003-07-08 2015-11-03 Hewlett-Packard Development Company, L.P. Implementing “all wireless” network over WiFi equipment using “scheduled TDMA”
US20050014496A1 (en) 2003-07-14 2005-01-20 Seung-Jae Han Method and apparatus for adaptive and online assignment in hierarchical overlay networks
US7242724B2 (en) 2003-07-16 2007-07-10 Lucent Technologies Inc. Method and apparatus for transmitting signals in a multi-antenna mobile communications system that compensates for channel variations
US7558575B2 (en) 2003-07-24 2009-07-07 Motorola Inc. Method and apparatus for wireless communication in a high velocity environment
US7313403B2 (en) 2003-08-06 2007-12-25 Hong Kong Applied Science And Technology Research Institute Co., Ltd. Location positioning in wireless networks
US7394858B2 (en) 2003-08-08 2008-07-01 Intel Corporation Systems and methods for adaptive bit loading in a multiple antenna orthogonal frequency division multiplexed communication system
US7286609B2 (en) 2003-08-08 2007-10-23 Intel Corporation Adaptive multicarrier wireless communication system, apparatus and associated methods
KR100790092B1 (ko) 2003-08-18 2007-12-31 삼성전자주식회사 다중 사용자 다중 입력 다중 출력 방식을 사용하는 무선통신 시스템에서 자원 스케쥴링 장치 및 방법
US20050042988A1 (en) 2003-08-18 2005-02-24 Alcatel Combined open and closed loop transmission diversity system
US7257167B2 (en) 2003-08-19 2007-08-14 The University Of Hong Kong System and method for multi-access MIMO channels with feedback capacity constraint
US7065144B2 (en) 2003-08-27 2006-06-20 Qualcomm Incorporated Frequency-independent spatial processing for wideband MISO and MIMO systems
US7440510B2 (en) 2003-09-15 2008-10-21 Intel Corporation Multicarrier transmitter, multicarrier receiver, and methods for communicating multiple spatial signal streams
US7471736B2 (en) 2003-09-30 2008-12-30 Alcatel-Lucent Usa Inc. Frequency based modulator compensation
DE10345541A1 (de) 2003-09-30 2005-04-28 Siemens Ag Verfahren zum Einstellen der Übertragungsparameter von in einer Gruppe zusammengefassten, breitbandigen Übertragungskanälen
US8306574B2 (en) 2003-10-29 2012-11-06 Robert Warner Method and system for an adaptive wireless communication system optimized for economic benefit
US7616698B2 (en) 2003-11-04 2009-11-10 Atheros Communications, Inc. Multiple-input multiple output system and method
US8705659B2 (en) 2003-11-06 2014-04-22 Apple Inc. Communication channel optimization systems and methods in multi-user communication systems
US7664533B2 (en) 2003-11-10 2010-02-16 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for a multi-beam antenna system
JP2005159448A (ja) 2003-11-20 2005-06-16 National Institute Of Information & Communication Technology 広帯域無線通信システム
US7298805B2 (en) 2003-11-21 2007-11-20 Qualcomm Incorporated Multi-antenna transmission for spatial division multiple access
FI20031702A0 (fi) 2003-11-21 2003-11-21 Nokia Corp Useiden kantoaaltojen allokointi usealle käyttäjälle viestintäjärjestelmässä
US7075485B2 (en) 2003-11-24 2006-07-11 Hong Kong Applied Science And Technology Research Institute Co., Ltd. Low cost multi-beam, multi-band and multi-diversity antenna systems and methods for wireless communications
US7366202B2 (en) 2003-12-08 2008-04-29 Colubris Networks, Inc. System and method for interference mitigation for wireless communication
WO2005062426A1 (en) 2003-12-22 2005-07-07 Telefonaktiebolaget Lm Ericsson (Publ) Method and system of communications
WO2005064871A1 (en) 2003-12-30 2005-07-14 Telefonaktiebolaget Lm Ericsson (Publ) Calibration method to achieve reciprocity of bidirectional communication channels
US7450489B2 (en) 2003-12-30 2008-11-11 Intel Corporation Multiple-antenna communication systems and methods for communicating in wireless local area networks that include single-antenna communication devices
US7006043B1 (en) 2004-01-16 2006-02-28 The United States Of America, As Represented By The Secretary Of The Army Wideband circularly polarized single layer compact microstrip antenna
US7339904B2 (en) 2004-02-06 2008-03-04 M-Stack Limited Apparatus and method for operating a communications device in a mobile communications network
US20050186991A1 (en) 2004-02-10 2005-08-25 Bateman Blaine R. Wireless access point with enhanced coverage
US7801490B1 (en) 2004-03-17 2010-09-21 Hewlett-Packard Company Interference based scheduling using cognitive radios
JP4012167B2 (ja) 2004-03-31 2007-11-21 株式会社東芝 無線通信システム
US8542763B2 (en) 2004-04-02 2013-09-24 Rearden, Llc Systems and methods to coordinate transmissions in distributed wireless systems via user clustering
US10886979B2 (en) 2004-04-02 2021-01-05 Rearden, Llc System and method for link adaptation in DIDO multicarrier systems
US7599420B2 (en) 2004-07-30 2009-10-06 Rearden, Llc System and method for distributed input distributed output wireless communications
US7636381B2 (en) 2004-07-30 2009-12-22 Rearden, Llc System and method for distributed input-distributed output wireless communications
US7418053B2 (en) 2004-07-30 2008-08-26 Rearden, Llc System and method for distributed input-distributed output wireless communications
US10425134B2 (en) 2004-04-02 2019-09-24 Rearden, Llc System and methods for planned evolution and obsolescence of multiuser spectrum
US10277290B2 (en) 2004-04-02 2019-04-30 Rearden, Llc Systems and methods to exploit areas of coherence in wireless systems
US7711030B2 (en) 2004-07-30 2010-05-04 Rearden, Llc System and method for spatial-multiplexed tropospheric scatter communications
US10985811B2 (en) 2004-04-02 2021-04-20 Rearden, Llc System and method for distributed antenna wireless communications
US9312929B2 (en) 2004-04-02 2016-04-12 Rearden, Llc System and methods to compensate for Doppler effects in multi-user (MU) multiple antenna systems (MAS)
US9826537B2 (en) 2004-04-02 2017-11-21 Rearden, Llc System and method for managing inter-cluster handoff of clients which traverse multiple DIDO clusters
US8654815B1 (en) 2004-04-02 2014-02-18 Rearden, Llc System and method for distributed antenna wireless communications
US7633994B2 (en) 2004-07-30 2009-12-15 Rearden, LLC. System and method for distributed input-distributed output wireless communications
US8170081B2 (en) 2004-04-02 2012-05-01 Rearden, LLC. System and method for adjusting DIDO interference cancellation based on signal strength measurements
US8571086B2 (en) 2004-04-02 2013-10-29 Rearden, Llc System and method for DIDO precoding interpolation in multicarrier systems
US10187133B2 (en) 2004-04-02 2019-01-22 Rearden, Llc System and method for power control and antenna grouping in a distributed-input-distributed-output (DIDO) network
US10200094B2 (en) 2004-04-02 2019-02-05 Rearden, Llc Interference management, handoff, power control and link adaptation in distributed-input distributed-output (DIDO) communication systems
US9819403B2 (en) 2004-04-02 2017-11-14 Rearden, Llc System and method for managing handoff of a client between different distributed-input-distributed-output (DIDO) networks based on detected velocity of the client
US8160121B2 (en) 2007-08-20 2012-04-17 Rearden, Llc System and method for distributed input-distributed output wireless communications
KR100651447B1 (ko) 2004-04-14 2006-11-29 삼성전자주식회사 복수의 안테나들을 사용하는 셀룰러 이동통신 시스템에서의 안테나 재 선택 시스템 및 방법
US7492749B2 (en) 2004-05-19 2009-02-17 The Directv Group, Inc. Method and system for providing multi-input-multi-output (MIMO) downlink transmission
JP2005341432A (ja) 2004-05-28 2005-12-08 Ntt Docomo Inc 周波数選択装置、移動通信システムおよびマルチバンド制御方法
US7689639B2 (en) 2004-06-04 2010-03-30 Telefonaktiebolaget Lm Ericsson (Publ) Complex logarithmic ALU
KR101050603B1 (ko) 2004-06-23 2011-07-19 삼성전자주식회사 무선 통신 시스템에서 다중 안테나를 이용한 패킷 데이터송/수신 장치 및 방법
US7327983B2 (en) 2004-06-25 2008-02-05 Mitsubishi Electric Research Laboratories, Inc. RF-based antenna selection in MIMO systems
US7137594B2 (en) 2004-06-30 2006-11-21 The Boeing Company Aircraft interior configuration detection system
US7684753B2 (en) 2004-07-21 2010-03-23 Nokia Corporation Method and device for transmission parameter selection in mobile communications
US9685997B2 (en) 2007-08-20 2017-06-20 Rearden, Llc Systems and methods to enhance spatial diversity in distributed-input distributed-output wireless systems
US7366245B2 (en) 2004-09-10 2008-04-29 Intel Corporation Calibration in MIMO systems
US7599443B2 (en) 2004-09-13 2009-10-06 Nokia Corporation Method and apparatus to balance maximum information rate with quality of service in a MIMO system
US7512110B2 (en) 2004-09-21 2009-03-31 Motorola, Inc. Method and apparatus to facilitate inter-AN HRPD hard handoff
CN101023612A (zh) 2004-09-28 2007-08-22 松下电器产业株式会社 多载波通信装置以及多载波通信方法
US20060098754A1 (en) 2004-10-21 2006-05-11 Samsung Electronics Co., Ltd. Beam and power allocation method for MIMO communication system
KR20060038812A (ko) 2004-11-01 2006-05-04 엘지전자 주식회사 다중입출력 시스템의 선행 코딩 행렬 정보 전송 방법 및이를 이용한 신호 전송 방법
KR100909539B1 (ko) 2004-11-09 2009-07-27 삼성전자주식회사 다중 안테나를 사용하는 광대역 무선 접속 시스템에서 다양한 다중안테나 기술을 지원하기 위한 장치 및 방법
US7428268B2 (en) 2004-12-07 2008-09-23 Adaptix, Inc. Cooperative MIMO in multicell wireless networks
US7573851B2 (en) 2004-12-07 2009-08-11 Adaptix, Inc. Method and system for switching antenna and channel assignments in broadband wireless networks
US7548752B2 (en) 2004-12-22 2009-06-16 Qualcomm Incorporated Feedback to support restrictive reuse
US7729443B2 (en) 2004-12-28 2010-06-01 Panasonic Corporation Wireless communication apparatus and wireless communication method
US7719993B2 (en) 2004-12-30 2010-05-18 Intel Corporation Downlink transmit beamforming
CN1797987B (zh) 2004-12-30 2011-02-16 都科摩（北京）通信技术研究中心有限公司 自适应调度的mimo通信系统及其自适应用户调度方法
GB2422073B (en) 2005-01-07 2007-03-28 Toshiba Res Europ Ltd Improved frequency offset tracking
US20060159187A1 (en) 2005-01-14 2006-07-20 Haifeng Wang System and method for utilizing different known guard intervals in single/multiple carrier communication systems
US8780957B2 (en) 2005-01-14 2014-07-15 Qualcomm Incorporated Optimal weights for MMSE space-time equalizer of multicode CDMA system
US10148897B2 (en) 2005-07-20 2018-12-04 Rearden, Llc Apparatus and method for capturing still images and video using coded lens imaging techniques
EP2204918A1 (en) 2005-01-24 2010-07-07 NTT DoCoMo, Inc. Mobile communication terminal and method for controlling activation of multi-path interference removing apparatus
US7596111B2 (en) 2005-01-27 2009-09-29 Atc Technologies, Llc Satellite/terrestrial wireless communications systems and methods using disparate channel separation codes
JP4599192B2 (ja) 2005-03-02 2010-12-15 株式会社日立製作所 無線データ通信システム、および、無線データ通信方法
US9154211B2 (en) 2005-03-11 2015-10-06 Qualcomm Incorporated Systems and methods for beamforming feedback in multi antenna communication systems
JP4856221B2 (ja) 2005-03-31 2012-01-18 株式会社エヌ・ティ・ティ・ドコモ 基地局及び受信方法
US8483200B2 (en) 2005-04-07 2013-07-09 Interdigital Technology Corporation Method and apparatus for antenna mapping selection in MIMO-OFDM wireless networks
US9408220B2 (en) 2005-04-19 2016-08-02 Qualcomm Incorporated Channel quality reporting for adaptive sectorization
US7609751B1 (en) 2005-05-24 2009-10-27 L-3 Communications Corporation Method and apparatus to initiate communications between an unknown node and an existing secure network
US7616930B2 (en) 2005-05-24 2009-11-10 Magnolia Broadband Inc. Determining a phase adjustment in accordance with power trends
US7451839B2 (en) 2005-05-24 2008-11-18 Rearden, Llc System and method for powering a vehicle using radio frequency generators
US7630732B2 (en) 2005-06-14 2009-12-08 Interdigital Technology Corporation Method and apparatus for generating feedback information for transmit power control in a multiple-input multiple-output wireless communication system
CN101238648B (zh) 2005-06-14 2013-03-20 高通股份有限公司 用于从蜂窝式无线电网络进行广播及多播的方法和设备
KR101011408B1 (ko) 2005-06-16 2011-01-28 콸콤 인코포레이티드 무선 통신 시스템에서의 협상된 채널 정보 보고
US7817967B2 (en) 2005-06-21 2010-10-19 Atc Technologies, Llc Communications systems including adaptive antenna systems and methods for inter-system and intra-system interference reduction
KR100946924B1 (ko) 2005-06-24 2010-03-09 삼성전자주식회사 제로 포싱 빔포밍 알고리즘에서의 사용자 단말 선택 방법
US7480497B2 (en) 2005-06-29 2009-01-20 Intel Corporation Multicarrier receiver and method for carrier frequency offset correction and channel estimation for receipt of simultaneous transmissions over a multi-user uplink
US7242961B2 (en) 2005-07-13 2007-07-10 Broadcom Corporation Channel reciprocity matrix determination in a wireless MIMO communication system
GB2418806B (en) * 2005-08-19 2006-09-27 Ipwireless Inc Duplex operation in a cellular communication system
AR055382A1 (es) 2005-08-22 2007-08-22 Qualcomm Inc Transmision mediante antena virtual selectiva
JP4702883B2 (ja) 2005-08-23 2011-06-15 国立大学法人東京工業大学 送信装置、受信装置、ｍｉｍｏ−ｏｆｄｍ通信システム及びｍｉｍｏ−ｏｆｄｍ通信システムにおけるｉｑインバランス補償方法
US9136974B2 (en) 2005-08-30 2015-09-15 Qualcomm Incorporated Precoding and SDMA support
FI20055483A0 (fi) 2005-09-08 2005-09-08 Nokia Corp Datasiirtojärjestelmä langattomassa tietoliikennejärjestelmässä
KR20070032548A (ko) 2005-09-16 2007-03-22 삼성전자주식회사 다중 안테나를 사용하는 무선통신시스템에서 채널 보정장치 및 방법
US7630337B2 (en) 2005-09-21 2009-12-08 Broadcom Corporation Method and system for an improved user group selection scheme with finite-rate channel state information feedback for FDD multiuser MIMO downlink transmission
US7917100B2 (en) 2005-09-21 2011-03-29 Broadcom Corporation Method and system for a double search user group selection scheme with range in TDD multiuser MIMO downlink transmission
US8139672B2 (en) 2005-09-23 2012-03-20 Qualcomm Incorporated Method and apparatus for pilot communication in a multi-antenna wireless communication system
KR100734890B1 (ko) 2005-10-10 2007-07-03 삼성전자주식회사 스마트 안테나 시스템에서 단말의 수신성능을 향상시키기위한 장치 및 방법
JP2007110456A (ja) 2005-10-14 2007-04-26 Hitachi Ltd 無線通信装置
WO2007046621A1 (en) 2005-10-17 2007-04-26 Samsung Electronics Co., Ltd. Apparatus and method for transmitting/receiving data in multi-user multi-antenna communication system
CN100407825C (zh) 2005-10-18 2008-07-30 上海贝尔阿尔卡特股份有限公司 分布式基站、通信系统及其使用的信号传输方法
US7539458B2 (en) 2005-10-24 2009-05-26 The Regents Of The University Of California Apparatus and method for a system architecture for multiple antenna wireless communication systems using round robin channel estimation and transmit beam forming algorithms
US8483616B1 (en) 2005-11-01 2013-07-09 At&T Intellectual Property Ii, L.P. Non-interference technique for spatially aware mobile ad hoc networking
WO2007058606A1 (en) 2005-11-16 2007-05-24 Telefonaktiebolaget Lm Ericsson (Publ) Expert system
US7720437B2 (en) 2005-12-08 2010-05-18 University Of South Florida Zero-order energy smart antenna and repeater
EP1796414B1 (en) 2005-12-10 2021-04-28 Samsung Electronics Co., Ltd. Apparatus and method for hard handover in a wireless communication system
JP2009529810A (ja) 2006-01-13 2009-08-20 エルジー エレクトロニクス インコーポレイティド フィードバック情報に基づくアンテナ選択を使用して伝送ダイバーシティ及び空間多重化を達成するための方法及び装置
US7426198B2 (en) 2006-02-06 2008-09-16 Motorola, Inc. Method and apparatus for performing spatial-division multiple access
KR101218495B1 (ko) 2006-02-21 2013-01-18 삼성전자주식회사 직교 주파수 분할 다중화/시분할 듀플렉스 방식의 이동통신시스템에서 상향링크 사전등화를 위한 하향링크 채널변화에 따른 적응채널 예측 장치 및 방법
JP2007228029A (ja) 2006-02-21 2007-09-06 Fujitsu Ltd 無線通信システム及び受信装置
WO2007103085A2 (en) 2006-03-01 2007-09-13 Interdigital Technology Corporation Method and apparatus for calibration and channel state feedback to support transmit beamforming in a mimo system
US7729433B2 (en) 2006-03-07 2010-06-01 Motorola, Inc. Method and apparatus for hybrid CDM OFDMA wireless transmission
KR100841639B1 (ko) 2006-03-13 2008-06-26 삼성전자주식회사 이동통신 시스템에서 간섭 제거를 위한 채널 추정 장치 및방법
CN101405973B (zh) 2006-03-20 2013-04-24 英特尔公司 用于分配时间和频率资源的无线接入网和方法
US8041362B2 (en) 2006-03-20 2011-10-18 Intel Corporation Downlink resource allocation and mapping
US8855046B2 (en) 2006-03-30 2014-10-07 Broadcom Corporation Method and system for uplink coordinated reception in orthogonal frequency division multiple access systems
KR101231357B1 (ko) 2006-04-06 2013-02-07 엘지전자 주식회사 다중 안테나 시스템에서 채널 상태 정보 귀환 방법 및데이터 송신 방법
KR100913856B1 (ko) 2006-04-19 2009-08-26 삼성전자주식회사 다중 사용자 ｍｉｍｏ 시스템에서 채널 선택 장치 및방법과 시스템
US20070249380A1 (en) 2006-04-19 2007-10-25 Motorola, Inc. Apparatus and method for broadcasting data
JP4775288B2 (ja) 2006-04-27 2011-09-21 ソニー株式会社 無線通信システム、無線通信装置及び無線通信方法
US7751368B2 (en) 2006-05-01 2010-07-06 Intel Corporation Providing CQI feedback to a transmitter station in a closed-loop MIMO system
US7894820B2 (en) 2006-05-01 2011-02-22 Intel Corporation Channel feedback using channel state predictions based also on delays
US7756222B2 (en) 2006-05-04 2010-07-13 Integrated System Solution Corporation Adaptive quantization method and apparatus for an OFDM receiver
US7633944B1 (en) 2006-05-12 2009-12-15 Juniper Networks, Inc. Managing timeouts for dynamic flow capture and monitoring of packet flows
US20070280116A1 (en) 2006-06-05 2007-12-06 Hong Kong University Of Science And Technology Adaptive multi-user mimo non-cooperative threshold-based wireless communication system using limited channel feedback
US7801084B2 (en) 2006-06-09 2010-09-21 Intel Corporation Doppler frequency determination for mobile wireless devices
KR101269201B1 (ko) 2006-06-30 2013-05-28 삼성전자주식회사 폐 루프 방식의 다중 안테나 시스템에서 데이터송/수신장치 및 방법
US8396158B2 (en) 2006-07-14 2013-03-12 Nokia Corporation Data processing method, data transmission method, data reception method, apparatus, codebook, computer program product, computer program distribution medium
JP4806307B2 (ja) 2006-07-28 2011-11-02 京セラ株式会社 無線通信方法、無線基地局、無線通信端末及び基地局制御装置
TW200824378A (en) 2006-08-17 2008-06-01 Interdigital Tech Corp Method and apparatus for reducing a peak-to-average power ratio in a multiple-input multiple-output system
US8271043B2 (en) 2006-08-21 2012-09-18 Qualcomm Incorporated Approach to a unified SU-MIMO/MU-MIMO operation
JP4845640B2 (ja) 2006-08-23 2011-12-28 富士通株式会社 無線通信システムおよび無線通信方法
CN101141165A (zh) 2006-09-05 2008-03-12 华为技术有限公司 实现发射及接收分集的系统及方法
US7729439B2 (en) 2006-09-18 2010-06-01 Marvell World Trade Ltd. Calibration correction for implicit beamforming in a wireless MIMO communication system
US20080080635A1 (en) 2006-10-02 2008-04-03 Nokia Corporation Advanced feedback signaling for multi-antenna transmission systems
US20090135944A1 (en) 2006-10-23 2009-05-28 Dyer Justin S Cooperative-MIMO Communications
KR100834631B1 (ko) 2006-10-25 2008-06-02 삼성전자주식회사 분산 무선 통신 시스템에서의 직교 공간 시간 블록 코드 겸빔 형성을 위한 적응식 전송 파워 할당 방법
WO2008049366A1 (fr) 2006-10-26 2008-05-02 Huawei Technologies Co., Ltd. Procédé de construction d'un répertoire d'accès sdma et appareil se rapportant à celui-ci et procédé de programmation et appareil et système se rapportant à celui-ci
KR101088191B1 (ko) 2006-10-31 2011-11-30 콸콤 인코포레이티드 역방향 링크 전송들을 위한 동적 ｓｉｍｏ, ｓｕ－ｓｉｍｏ 및 ｍｕ－ｍｉｍｏ 동작에 대한 통합 설계 및 중앙집중형 스케줄링
EP2078365A4 (en) 2006-11-01 2012-07-25 Ericsson Telefon Ab L M METHOD AND ARRANGEMENT FOR SINR FEEDBACK IN MIMO-BASED WIRELESS COMMUNICATION SYSTEMS
US8126510B1 (en) 2006-11-15 2012-02-28 Nextel Communications Inc. Public safety communications network architecture
KR100842619B1 (ko) 2006-11-22 2008-06-30 삼성전자주식회사 분산 무선 통신 시스템에서 심볼 에러율의 기반 직교 공간시간 블록 코드 겸 빔 형성을 위한 적응식 전송 파워 할당방법
GB0623653D0 (en) 2006-11-27 2007-01-03 Innovision Res & Tech Plc Near field RF communicators and near field RF communications enabled devices
US20080165866A1 (en) 2007-01-08 2008-07-10 Koon Hoo Teo Cooperative Communication and Shared Handoff among Base, Relay, and Mobile Stations in OFDMA Cellular Networks
CN101622843A (zh) 2007-01-12 2010-01-06 诺基亚公司 用于提供自动控制信道映射的方法和装置
US8204142B2 (en) 2007-01-29 2012-06-19 Samsung Electronics Co., Ltd Precoder and precoding method in a multi-antenna system
KR20080074004A (ko) 2007-02-07 2008-08-12 엘지전자 주식회사 피드백 정보를 이용한 상향링크의 가상 다중 안테나 전송방법 및 이를 지원하는 이동 단말
CN101606424B (zh) 2007-02-12 2013-10-30 交互数字技术公司 用于支持从lte/eutran到gprs/geran的切换的方法和装置
KR100866188B1 (ko) 2007-02-22 2008-10-30 삼성전자주식회사 분산 무선 통신 시스템에서 직교 공간 시간 블록 코드를위한 심볼 에러율 근사화 방법
KR101002877B1 (ko) 2007-03-06 2010-12-21 한국과학기술원 통신시스템에서 다중 사용자 스케쥴링 방법 및 장치
KR101005233B1 (ko) 2007-03-14 2010-12-31 더 보드 오브 리전츠 오브 더 유니버시티 오브 텍사스 시스템 다중 안테나 시스템에서 간섭 제거 장치 및 방법
US20080233902A1 (en) 2007-03-21 2008-09-25 Interdigital Technology Corporation Method and apparatus for communicating precoding or beamforming information to users in mimo wireless communication systems
CN101272520B (zh) 2007-03-21 2011-04-13 上海贝尔阿尔卡特股份有限公司 在系统架构演进中支持多媒体广播组播业务的方法和装置
US8676223B2 (en) 2007-03-23 2014-03-18 Qualcomm Incorporated Backhaul communication for interference management
US20080268833A1 (en) 2007-03-30 2008-10-30 Leping Huang System and Method for Self-Optimization of Interference Coordination in Communication Systems
CN101282566B (zh) 2007-04-03 2011-10-26 中兴通讯股份有限公司 一种干扰抑制方法
US8787469B2 (en) 2007-04-04 2014-07-22 Samsung Electronics Co., Ltd. Method for codebook design and beamforming vector selection in per-user unitary rate control (PU2RC) system
US8406248B2 (en) 2007-04-13 2013-03-26 Hart Communication Foundation Priority-based scheduling and routing in a wireless network
CN101291503B (zh) 2007-04-17 2011-11-16 展讯通信（上海）有限公司 时分双工mimo多天线通信系统射频通路的校准方法与装置
JP5006097B2 (ja) 2007-04-24 2012-08-22 京セラ株式会社 受信制御方法および無線通信装置
WO2008144151A2 (en) 2007-05-15 2008-11-27 Rambus Inc. Multi-antenna transmitter for multi-tone signaling
US7864663B2 (en) 2007-05-25 2011-01-04 Telefonaktiebolaget Lm Ericsson (Publ) Orthogonal spread-spectrum waveform generation with non-contiguous spectral occupancy for use in CDMA communications
US8482462B2 (en) 2007-05-25 2013-07-09 Rambus Inc. Multi-antenna beam-forming system for transmitting constant envelope signals decomposed from a variable envelope signal
EP2154802A4 (en) 2007-05-29 2014-03-26 Mitsubishi Electric Corp CALIBRATION PROCEDURE, COMMUNICATION SYSTEM, FREQUENCY CONTROL METHOD AND COMMUNICATION DEVICE
CN101325741B (zh) 2007-06-14 2012-12-12 Nxp股份有限公司 用于操作多用户多输入多输出(mu-mimo)无线通信系统的方法和系统
CN101682387B (zh) 2007-06-19 2013-06-12 株式会社Ntt都科摩 发送装置以及发送方法
US8160601B2 (en) 2007-06-21 2012-04-17 Elektrobit Wireless Communications Ltd. Method for optimizing spatial modulation in a wireless link and network element thereto
US8010116B2 (en) 2007-06-26 2011-08-30 Lgc Wireless, Inc. Distributed antenna communications system
US20090023467A1 (en) 2007-07-18 2009-01-22 Kaibin Huang Method and apparatus for performing space division multiple access in a wireless communication network
US8675743B2 (en) 2007-08-03 2014-03-18 Apple Inc. Feedback scheduling to reduce feedback rates in MIMO systems
US8369450B2 (en) 2007-08-07 2013-02-05 Samsung Electronics Co., Ltd. Pilot boosting and traffic to pilot ratio estimation in a wireless communication system
US7907677B2 (en) 2007-08-10 2011-03-15 Intel Corporation Open loop MU-MIMO
US8798183B2 (en) 2007-08-13 2014-08-05 Qualcomm Incorporated Feedback and rate adaptation for MIMO transmission in a time division duplexed (TDD) communication system
WO2009021981A2 (en) 2007-08-16 2009-02-19 Nokia Siemens Networks Oy Integration apparatus, communication network and method for integrating a network node into a communication network
US20090046678A1 (en) 2007-08-17 2009-02-19 Industry-Academic Cooperation Foundation Of Kyung Hee University Method for predicting the mobility in mobile ad hoc networks
CA3025857C (en) 2007-08-20 2022-10-18 Rearden, Llc System and method for distributed input distributed output wireless communications
US8989155B2 (en) * 2007-08-20 2015-03-24 Rearden, Llc Systems and methods for wireless backhaul in distributed-input distributed-output wireless systems
US8830812B2 (en) 2007-08-31 2014-09-09 Alcatel Lucent Optimizing precoder settings using average SINR reports for groups of tones
US8036099B2 (en) 2007-09-06 2011-10-11 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for linearly precoding downlink transmissions to reduce temporal variations in interference
US20090075686A1 (en) 2007-09-19 2009-03-19 Gomadam Krishna S Method and apparatus for wideband transmission based on multi-user mimo and two-way training
US8077809B2 (en) 2007-09-28 2011-12-13 Cisco Technology, Inc. Link adaptation based on generic CINR measurement according to log-likelihood ratio distribution
US8948093B2 (en) 2007-10-02 2015-02-03 Apple Inc. Rank adaptation for an open loop multi-antenna mode of wireless communication
US8811334B2 (en) * 2007-10-12 2014-08-19 Alcatel Lucent Methods for idle registration and idle handoff in a femto environment
WO2009058129A1 (en) 2007-10-30 2009-05-07 Telefonaktiebolaget Lm Ericsson (Publ) Distributed antenna system
US8300726B2 (en) 2007-11-02 2012-10-30 Alcatel Lucent Interpolation method and apparatus for increasing efficiency of crosstalk estimation
KR100991793B1 (ko) 2007-12-31 2010-11-03 엘지전자 주식회사 셀간 간섭 감소 방법
US8055211B2 (en) 2007-12-31 2011-11-08 Motorola Mobility, Inc. Method and system for utilizing transmit local oscillator for improved cell search and multi-link communication in multi-mode device
US20090326688A1 (en) 2008-02-01 2009-12-31 Nike, Inc. Systems and Methods for Fitting Golfers with Golf Clubs
US20090195355A1 (en) 2008-02-01 2009-08-06 Cynthia Sue Mitchell Methods and apparatus for place shifting content to a vehicle entertainment system
US8509291B2 (en) 2008-02-08 2013-08-13 Qualcomm Incorporated Open-loop transmit diversity schemes with four transmit antennas
US20090209206A1 (en) 2008-02-15 2009-08-20 The Hong Kong University Of Science And Technology Optimal mimo isi channel estimation using loosely synchronized codes and their variations
JP4946922B2 (ja) 2008-03-06 2012-06-06 住友電気工業株式会社 無線通信装置
HUE044910T2 (hu) 2008-03-07 2019-11-28 Blackberry Ltd Eljárás és rendszer csökkentett rendszer-idõ overhead paraméterhossz ábrázolásra rádióközi hozzáférési technológiás kommunikációhoz
US8594733B2 (en) 2008-03-08 2013-11-26 Qualcomm Incorporated Methods and apparatus for using polarized antennas in wireless networks including single sector base stations
US8085721B2 (en) 2008-03-10 2011-12-27 Elektrobit Wireless Communications Oy Adaptive transmission method and a base station using the method
KR20110002020A (ko) 2008-03-12 2011-01-06 하이프레스 인코포레이티드 디지털 ｒｆ 트랜시버 시스템 및 방법
US8203483B2 (en) 2008-03-13 2012-06-19 Cubic Corporation Digital beamforming antenna and datalink array
US8351521B2 (en) 2008-03-17 2013-01-08 Qualcomm Incorporated Multi-resolution beamforming based on codebooks in MIMO systems
US20110021163A1 (en) 2008-03-28 2011-01-27 Ulf Lindgren Antenna optimization
US8301956B2 (en) 2008-04-07 2012-10-30 Samsung Electronics Co., Ltd. Methods and apparatus to improve communication in a relay channel
US8559879B2 (en) 2008-04-22 2013-10-15 Qualcomm Incorporated Null pilots for interference estimation in a wireless communication network
US8811353B2 (en) 2008-04-22 2014-08-19 Texas Instruments Incorporated Rank and PMI in download control signaling for uplink single-user MIMO (UL SU-MIMO)
US8155063B2 (en) 2008-04-28 2012-04-10 Apple Inc. Apparatus and methods for transmission and reception of data in multi-antenna systems
KR101486378B1 (ko) 2008-05-07 2015-01-26 엘지전자 주식회사 협력적 다중 입출력 안테나 이동 통신 시스템에서의 데이터송수신 방법
WO2009138876A2 (en) 2008-05-13 2009-11-19 Mobileaccess Networks Ltd. Multiple data services over a distributed antenna system
US8102785B2 (en) 2008-05-21 2012-01-24 Alcatel Lucent Calibrating radiofrequency paths of a phased-array antenna
US8174428B2 (en) 2008-05-21 2012-05-08 Integrated Device Technology, Inc. Compression of signals in base transceiver systems
US8218422B2 (en) 2008-06-03 2012-07-10 Nec Laboratories America, Inc. Coordinated linear beamforming in downlink multi-cell wireless networks
US8204028B2 (en) 2008-06-12 2012-06-19 Intel Corporation Techniques for spatial reuse in wireless personal area networks based on virtual time divisional multiple access
US9225575B2 (en) 2008-06-18 2015-12-29 Center Of Excellence In Wireless Technology Precoding for single transmission streams in multiple antenna systems
US8326341B2 (en) 2008-06-23 2012-12-04 Nokia Corporation Method, apparatus and computer program for downlink MU-MIMO power settings and control
US7995973B2 (en) 2008-12-19 2011-08-09 Telefonaktiebolaget Lm Ericsson (Publ) Own transmitter interference tolerant transceiver and receiving methods
JP2010016674A (ja) 2008-07-04 2010-01-21 Fujitsu Ltd 無線通信装置、無線通信システム、及び無線通信方法
US9374746B1 (en) 2008-07-07 2016-06-21 Odyssey Wireless, Inc. Systems/methods of spatial multiplexing
US8243690B2 (en) 2008-07-09 2012-08-14 Intel Corporation Bandwidth allocation base station and method for allocating uplink bandwidth using SDMA
US8594158B2 (en) 2008-07-16 2013-11-26 Telefonaktiebolaget L M Ericsson (Publ) Base and repeater stations
KR101236033B1 (ko) 2008-07-21 2013-02-21 한국전자통신연구원 통신 오버헤드를 제거하는 통신 시스템
US8391206B2 (en) 2008-08-07 2013-03-05 Alcatel Lucent Method of joint resource allocation and clustering of base stations
US9755705B2 (en) 2008-08-07 2017-09-05 Qualcomm Incorporated Method and apparatus for supporting multi-user and single-user MIMO in a wireless communication system
US8687545B2 (en) 2008-08-11 2014-04-01 Qualcomm Incorporated Anchor carrier in a multiple carrier wireless communication system
US8705484B2 (en) 2008-08-15 2014-04-22 Ntt Docomo, Inc. Method for varying transmit power patterns in a multi-cell environment
CN102119514B (zh) 2008-08-20 2014-10-15 高通股份有限公司 用于共享单个信道上的信号的方法和装置
JP5256955B2 (ja) 2008-09-12 2013-08-07 富士通株式会社 制御方法、通信特性制御方法、基地局装置、及び移動局装置
CA2736713A1 (en) 2008-09-12 2010-03-18 Telefonaktiebolaget L M Ericsson (Publ) Methods and devices for spatial coding
JP5309825B2 (ja) 2008-09-18 2013-10-09 日本電気株式会社 通信システム、送信装置、受信装置、及び通信方法
US8340235B2 (en) 2008-09-25 2012-12-25 Research In Motion Limited X-MIMO systems with multi-transmitters and multi-receivers
US8295395B2 (en) 2008-09-30 2012-10-23 Apple Inc. Methods and apparatus for partial interference reduction within wireless networks
WO2010048985A1 (en) 2008-10-27 2010-05-06 Nokia Siemens Networks Oy Method for network co-ordination in a mobile communications system and apparatus thereof
EP2340671B1 (en) 2008-10-29 2021-04-28 Lenovo Group Limited Cell type information sharing between neighbour base stations
FR2939005A1 (fr) * 2008-11-21 2010-05-28 Thomson Licensing Procede d'emission de donnees et procede de reception correspondant
WO2010067419A1 (ja) 2008-12-09 2010-06-17 株式会社日立製作所 無線通信システム及び無線通信方法
US8625542B2 (en) 2008-12-18 2014-01-07 Cisco Technology, Inc. Beamforming spatial de-multiplexing for collaborative spatially multiplexed wireless communication
US8090320B2 (en) 2008-12-19 2012-01-03 Telefonaktiebolaget Lm Ericsson (Publ) Strong signal tolerant OFDM receiver and receiving methods
CN101442388B (zh) 2008-12-29 2012-07-04 北京邮电大学 一种多输入多输出系统中的预编码方法和装置
US8068844B2 (en) 2008-12-31 2011-11-29 Intel Corporation Arrangements for beam refinement in a wireless network
US20100178934A1 (en) 2009-01-13 2010-07-15 Qualcomm Incorporated Environment-specific measurement weighting in wireless positioning
US8867493B2 (en) 2009-02-02 2014-10-21 Qualcomm Incorporated Scheduling algorithms for cooperative beamforming based on resource quality indication
US8700039B2 (en) 2009-02-10 2014-04-15 Lg Electronics Inc. Method and apparatus for coordinated multiple point transmission and reception
EP2398157B1 (en) 2009-02-13 2019-04-03 LG Electronics Inc. Data transmission method and apparatus in multiple antenna system
JP4993778B2 (ja) 2009-02-18 2012-08-08 日本電信電話株式会社 分散アンテナシステムおよび分散アンテナ制御方法
US8264407B2 (en) 2009-02-19 2012-09-11 Qualcomm Atheros, Inc. Transmitter beamforming steering matrix processing and storage
US8428177B2 (en) 2009-02-25 2013-04-23 Samsung Electronics Co., Ltd. Method and apparatus for multiple input multiple output (MIMO) transmit beamforming
US8989106B2 (en) 2009-02-27 2015-03-24 Qualcomm Incorporated Methods and apparatuses for scheduling uplink request spatial division multiple access (RSDMA) messages in an SDMA capable wireless LAN
US8223705B2 (en) 2009-03-02 2012-07-17 Mitsubishi Electric Research Laboratories, Inc. Method for optimizing performance in multi-cell OFDMA networks
KR101584689B1 (ko) 2009-03-04 2016-01-13 삼성전자주식회사 다중 안테나 시스템에서 다중 사용자 간섭 제거 방법 및 장치
WO2010105210A2 (en) 2009-03-12 2010-09-16 Comsys Communication & Signal Processing Ltd. Vehicle integrated communications system
US20100232336A1 (en) 2009-03-13 2010-09-16 Sharp Laboratories Of America, Inc. Systems and methods for selecting antennas for coordinated multipoint transmission
US20100238984A1 (en) 2009-03-19 2010-09-23 Motorola, Inc. Spatial Information Feedback in Wireless Communication Systems
US8867495B2 (en) 2009-03-20 2014-10-21 Qualcomm Incorporated Feedback mechanisms for beamforming operation
US8675481B2 (en) 2009-03-23 2014-03-18 Lg Electronics Inc. Method and apparatus for transmitting reference signal in multi-antenna system
KR101530200B1 (ko) 2009-03-25 2015-06-19 삼성전자주식회사 단말 장치 및 네트워크 제어 장치
US20100260060A1 (en) 2009-04-08 2010-10-14 Qualcomm Incorporated Integrated calibration protocol for wireless lans
US9432991B2 (en) 2009-04-21 2016-08-30 Qualcomm Incorporated Enabling support for transparent relays in wireless communication
JP4801755B2 (ja) 2009-04-23 2011-10-26 株式会社エヌ・ティ・ティ・ドコモ 無線通信装置及び方法
US8320432B1 (en) 2009-04-27 2012-11-27 Indian Institute of Science at Bangalore Device and method for precoding vectors in a communication system
US8380135B2 (en) 2009-05-04 2013-02-19 Lg Electronics Inc. Method of transmitting control information in wireless communication system
US8107965B2 (en) 2009-05-14 2012-01-31 Telefonaktiebolaget L M Ericsson (Publ) Distributed computation of precoding weights for coordinated multipoint transmission on the downlink
US8320926B2 (en) 2009-05-20 2012-11-27 Telefonaktiebolaget L M Ericsson (Publ) Methods and arrangements in a wireless communication system
US20110130098A1 (en) 2009-05-22 2011-06-02 Qualcomm Incorporated Systems, apparatus and methods for distributed scheduling to facilitate interference management
US8116710B2 (en) 2009-06-04 2012-02-14 Telefonaktiebolaget L M Ericsson (Publ) Continuous sequential scatterer estimation
KR101607336B1 (ko) 2009-06-07 2016-03-30 엘지전자 주식회사 무선 통신 시스템에서 ｒｂ 설정 방법 및 장치
JP2011004161A (ja) 2009-06-18 2011-01-06 Sharp Corp 通信システム、通信装置および通信方法
KR101715939B1 (ko) 2009-06-18 2017-03-14 엘지전자 주식회사 채널 상태 정보 피드백 방법 및 장치
US20100323611A1 (en) 2009-06-19 2010-12-23 Sharp Laboratories Of America, Inc. Systems and methods for coherent precoding with antenna selection for coordinated multipoint transmission
US8711716B2 (en) 2009-06-19 2014-04-29 Texas Instruments Incorporated Multiple CQI feedback for cellular networks
US8923143B2 (en) 2009-06-29 2014-12-30 Qualcomm Incorporated Open loop channel reporting in a wireless communication system
WO2011008013A2 (ko) 2009-07-13 2011-01-20 엘지전자 주식회사 백홀 링크 전송을 위한 전송 모드 구성 방법 및 장치
US8879602B2 (en) 2009-07-24 2014-11-04 At&T Mobility Ii Llc Asymmetrical receivers for wireless communication
CN101989870A (zh) 2009-08-05 2011-03-23 株式会社Ntt都科摩 获取信道质量指示信息的方法及基站
US20110194504A1 (en) 2009-08-12 2011-08-11 Qualcomm Incorporated Method and apparatus for supporting single-user multiple-input multiple-output (su-mimo) and multi-user mimo (mu-mimo)
IN2012DN02033A (zh) 2009-08-14 2015-07-31 Nokia Siemens Networks Oy
US8848624B2 (en) 2009-08-17 2014-09-30 Broadcom Corporation Multi-user uplink communications within multiple user, multiple access, and/or MIMO wireless communication systems
US9094180B2 (en) 2009-08-24 2015-07-28 Nokia Siemens Networks Oy Channel-adaptive transmission in a distributed coordinated multi-point transmission system
US8391429B2 (en) 2009-08-26 2013-03-05 Qualcomm Incorporated Methods for determining reconstruction weights in a MIMO system with successive interference cancellation
CN102025396B (zh) 2009-09-23 2013-09-11 华为技术有限公司 滤波处理方法、系统及设备
JP5354498B2 (ja) 2009-09-24 2013-11-27 独立行政法人情報通信研究機構 コグニティブ通信ネットワークシステム及びその通信方法
US8923905B2 (en) 2009-09-30 2014-12-30 Qualcomm Incorporated Scrambling sequence initialization for coordinated multi-point transmissions
JP4896196B2 (ja) 2009-10-01 2012-03-14 株式会社エヌ・ティ・ティ・ドコモ 協調送信方法、協調送信システム、集約局及び無線基地局
CN102577542A (zh) 2009-10-02 2012-07-11 交互数字专利控股公司 用于对上行链路中的多天线传输进行发射功率控制的方法和装置
US8185088B2 (en) 2009-10-09 2012-05-22 At&T Mobility Ii Llc Mobile device leasing with customized operational features
WO2011046349A2 (ko) 2009-10-12 2011-04-21 엘지전자 주식회사 다중 안테나를 지원하는 무선 통신 시스템에서 하향링크 참조 신호 전송 전력 정보 제공 방법 및 장치
US8873650B2 (en) 2009-10-12 2014-10-28 Motorola Mobility Llc Configurable spatial channel information feedback in wireless communication system
WO2011047333A1 (en) 2009-10-15 2011-04-21 Saeid Safavi Methods and apparatus for centralized and coordinated interference mitigation in a wlan network
US20110090820A1 (en) 2009-10-16 2011-04-21 Osama Hussein Self-optimizing wireless network
JP5455026B2 (ja) 2009-10-28 2014-03-26 京セラ株式会社 無線基地局および無線通信方法
WO2011055940A2 (ko) 2009-11-05 2011-05-12 엘지전자 주식회사 채널 품질 정보의 전송 방법 및 이를 위한 장치
US8582516B2 (en) 2009-11-09 2013-11-12 Qualcomm Incorporated Reference signaling for a high-mobility wireless communication device
US8861495B2 (en) 2009-11-24 2014-10-14 Electronics And Telecommunications Research Institute Method for protecting data in a MU-MIMO based wireless communication system
WO2011071300A2 (en) 2009-12-10 2011-06-16 Lg Electronics Inc. Method and apparatus of transmitting training signal in wireless local area network system
CN102131245B (zh) 2010-01-15 2016-01-20 中兴通讯股份有限公司 辅载波配对信息的传输方法、实现传输的节点b和系统
RU2680752C2 (ru) 2010-01-18 2019-02-26 Телефонактиеболагет Лм Эрикссон (Пабл) Базовая радиостанция и пользовательское оборудование и способы в них
US20110176633A1 (en) 2010-01-20 2011-07-21 Eric Ojard Method and system for orthogonalized beamforming in multiple user multiple input multiple output (mu-mimo) communication systems
US8792367B2 (en) 2010-01-21 2014-07-29 Polytechnic Institute Of New York University CoopMAX: a cooperative MAC with randomized distributed space time coding for an IEEE 802.16 network
KR101419925B1 (ko) 2010-02-08 2014-07-14 브로드콤 코포레이션 다중포트 네트워크를 관통하여 광대역 신호를 빔성형하는 방법 및 시스템
US8861332B2 (en) 2010-02-11 2014-10-14 Lg Electronics Inc. Method and apparatus of recovering backhaul link failure between base station and relay node
EP2534875B1 (en) 2010-02-12 2021-12-08 InterDigital Technology Corporation Data split between multiple sites
US20110199946A1 (en) 2010-02-17 2011-08-18 Qualcomm Incorporated Method and apparatus for supporting adaptive channel state information feedback rate in multi-user communication systems
JP5392723B2 (ja) 2010-02-23 2014-01-22 株式会社Ｎｔｔドコモ 伝送路情報フィードバックシステム、フィードバック信号送信装置、フィードバック信号受信装置及び伝送路情報フィードバック方法
US8705443B2 (en) 2010-02-24 2014-04-22 Futurewei Technologies, Inc. System and method for reduced feedback in multiuser multiple input, multiple output wireless communications
EP2550755A1 (en) 2010-03-25 2013-01-30 Telefonaktiebolaget LM Ericsson (publ) Method for backhaul link protection in a mimo wireless link
US9161236B2 (en) 2010-03-29 2015-10-13 Lg Electronics Inc. Method and apparatus for measurement for inter-cell interference coordination in radio communication system
KR20110119551A (ko) 2010-04-26 2011-11-02 삼성전자주식회사 Ｏｆｄｍ 방식의 계층 셀 시스템에서 제어 채널의 셀 간 간섭 제어 방법 및 이를 위한 장치
US8780740B2 (en) 2010-05-06 2014-07-15 Qualcomm Incorporated System and method for controlling downlink packet latency
US9288690B2 (en) 2010-05-26 2016-03-15 Qualcomm Incorporated Apparatus for clustering cells using neighbor relations
WO2011155763A2 (ko) 2010-06-08 2011-12-15 엘지전자 주식회사 협력 멀티 포인트 통신 시스템에서 채널상태정보 송수신 방법 및 장치
US8521199B2 (en) 2010-06-15 2013-08-27 Futurewei Technologies, Inc. System and method for transparent coordinated beam-forming
US8838161B2 (en) 2010-06-16 2014-09-16 Samsung Electronics Co., Ltd Uplink power control method for mobile communication system
US8787484B2 (en) 2010-06-18 2014-07-22 Nec Corporation Precoding techniques for downlink coordinated multipoint transmission in radio communications system
KR20110138742A (ko) 2010-06-21 2011-12-28 주식회사 팬택 장치의 채널정보 전송방법, 그 장치, 기지국, 그 기지국의 전송방법
US8934557B2 (en) 2010-06-30 2015-01-13 Telefonaktiebolaget L M Ericsson (Publ) Statistical joint precoding in multi-cell, multi-user MIMO
KR20120003781A (ko) 2010-07-05 2012-01-11 주식회사 팬택 송신장치 및 그 통신방법, 수신장치, 그 통신방법
CN101873281B (zh) 2010-07-15 2013-01-23 西安电子科技大学 一种对2×2 tdd-mimo系统信道的互易性丧失补偿方法
CN102340784B (zh) 2010-07-16 2014-11-05 上海贝尔股份有限公司 选择用户终端以增强上下行互逆误差校准的方法和装置
US20120021707A1 (en) 2010-07-26 2012-01-26 Qualcomm Incorporated Apparatus and method for adjustment of transmitter power in a system
US8660057B2 (en) 2010-08-26 2014-02-25 Golba, Llc Method and system for distributed communication
US8346758B2 (en) 2010-08-31 2013-01-01 International Business Machines Corporation Method and system for transmitting a query in a wireless network
US9253767B2 (en) 2010-09-08 2016-02-02 Mediatek Singapore Pte. Ltd. PSMP-based downlink multi-user MIMO communications
KR101835326B1 (ko) 2010-09-26 2018-03-07 엘지전자 주식회사 다중 안테나 지원 무선 통신 시스템에서 효율적인 피드백 방법 및 장치
WO2012044088A2 (ko) 2010-09-29 2012-04-05 엘지전자 주식회사 다중 안테나 지원 무선 통신 시스템에서 효율적인 피드백 방법 및 장치
WO2012044969A1 (en) 2010-10-01 2012-04-05 Andrew Llc Distributed antenna system for mimo signals
US8681660B2 (en) * 2010-10-01 2014-03-25 Clearwire Ip Holdings Llc Enabling coexistence between FDD and TDD wireless networks
US8576742B2 (en) 2010-10-06 2013-11-05 Qualcomm Incorporated Dynamic switching between common reference signal interference cancellation and resource element puncturing in a co-channel heterogeneous network
CA2968031C (en) 2010-10-29 2021-06-15 Lilee Systems, Ltd System and method of frequency offset compensation for radio system with fast doppler shift
CN103299572B (zh) 2010-11-10 2016-08-10 交互数字专利控股公司 异构网络中通过连续消除进行干扰抑制的方法和装置
JP2012124859A (ja) 2010-12-10 2012-06-28 Sharp Corp 通信システム、基地局装置、通信方法、及び通信プログラム
EP2652937A1 (en) 2010-12-14 2013-10-23 GN Netcom A/S Docking station for a handheld telecommunication device
KR101595526B1 (ko) 2010-12-23 2016-02-26 한국전자통신연구원 콘텐츠 동기 전송 시스템 및 방법
JP5265657B2 (ja) 2010-12-27 2013-08-14 シャープ株式会社 基地局装置、端末装置、通信システムおよび通信方法
CN102594420B (zh) 2011-01-10 2015-08-05 上海贝尔股份有限公司 多点协同传输系统中的干扰抑制方法及装置
KR101777424B1 (ko) 2011-01-19 2017-09-12 엘지전자 주식회사 다중 노드 시스템에서 신호 수신 방법 및 장치
GB2487756B (en) * 2011-02-03 2015-11-04 Nvidia Corp System and method for reducing interference
EP2673892A4 (en) 2011-02-07 2016-09-14 Intel Corp COPHASING EMISSIONS FROM MULTIPLE INFRASTRUCTURE N UDS
ES2536895T3 (es) 2011-02-09 2015-05-29 Telefonaktiebolaget L M Ericsson (Publ) Configuración de símbolos de recursos dependientes del punto en una célula inalámbrica
US9426703B2 (en) 2011-02-11 2016-08-23 Qualcomm Incorporated Cooperation and operation of macro node and remote radio head deployments in heterogeneous networks
CN103563270A (zh) 2011-02-11 2014-02-05 韩国电子通信研究院 使用多传送和接收点的无线通信系统
US10187859B2 (en) 2011-02-14 2019-01-22 Qualcomm Incorporated Power control and user multiplexing for heterogeneous network coordinated multipoint operations
JP5723627B2 (ja) 2011-02-17 2015-05-27 シャープ株式会社 無線送信装置、無線受信装置、無線通信システム、制御プログラムおよび集積回路
CN102647722B (zh) 2011-02-18 2016-09-07 中兴通讯股份有限公司 一种tdd小区为终端提供服务的方法及系统
US8774167B2 (en) 2011-03-04 2014-07-08 T-Mobile Usa, Inc. Packet-switched core network architecture for voice services on second- and third-generation wireless access networks
US8737298B2 (en) 2011-03-11 2014-05-27 Telefonaktiebolaget L M Ericsson (Publ) Method of downlink signal transport over backhaul communications through distributed processing
US9351315B2 (en) 2011-03-25 2016-05-24 Beijing Nufront Mobile Multimedia Technology Co. Ltd. Resource scheduling method and device
US8442579B2 (en) 2011-03-31 2013-05-14 Intel Corporation Distributed adaptive resource allocation to enhance cell edge throughput
KR20120119175A (ko) 2011-04-20 2012-10-30 주식회사 팬택 무선 통신 시스템에 있어서 채널 상태 정보를 송수신하는 방법 및 장치
CN103503325B (zh) 2011-04-27 2017-07-07 富士通株式会社 用协作小区的无线通信
US9203490B2 (en) 2011-04-29 2015-12-01 Lg Electronics Inc. Method and apparatus for transmitting channel status information in wireless communication system
US9331757B2 (en) 2011-04-29 2016-05-03 Interdigital Patent Holdings, Inc. Open loop spatial processing
US9281930B2 (en) 2011-05-02 2016-03-08 Lg Electronics Inc. Method for transmitting/receiving data in wireless access system and base station for same
US20120281555A1 (en) 2011-05-02 2012-11-08 Research In Motion Limited Systems and Methods of Wireless Communication with Remote Radio Heads
US8837621B2 (en) 2011-05-09 2014-09-16 Telefonaktiebolaget L M Ericsson (Publ) Channel estimation for a very large-scale multiple-input multiple output (MIMO) system
EP2710826A1 (en) 2011-05-17 2014-03-26 Interdigital Patent Holdings, Inc. Nodeb power adaptation for reducing references
GB2491157B (en) 2011-05-24 2013-08-07 Toshiba Res Europ Ltd Method and apparatus for antenna selection in wireless communications systems
EP2724574B1 (en) 2011-06-21 2017-07-12 Telefonaktiebolaget LM Ericsson (publ) A user equipment and a method therein for transmission power control of uplink transmissions
EP2728774B1 (en) 2011-06-29 2019-05-15 LG Electronics Inc. Method and apparatus for controlling inter-cell interference in wireless communication system
JP5978566B2 (ja) 2011-07-07 2016-08-24 ソニー株式会社 通信装置、通信方法および基地局
USRE49728E1 (en) 2011-07-25 2023-11-14 Lg Electronics Inc. Method and apparatus for monitoring a wireless link in a wireless communication system
WO2013017902A1 (en) 2011-08-01 2013-02-07 Research In Motion Limited Joint transmission using interference alignment
EP2740286B1 (en) 2011-08-04 2015-04-22 Telefonaktiebolaget LM Ericsson (PUBL) An outdoor-indoor mimo communication system using multiple repeaters and leaky cables
US8693420B2 (en) 2011-08-10 2014-04-08 Futurewei Technologies, Inc. System and method for signaling and transmitting uplink reference signals
US8849339B2 (en) 2011-08-12 2014-09-30 Telefonaktiebolaget L M Ericsson (Publ) Closed loop power control in a heterogeneous network by selecting among sets of accumulative power step values
TWI599191B (zh) 2011-08-12 2017-09-11 內數位專利控股公司 多輸入多輸出操作方法及裝置
US9456372B2 (en) 2011-08-12 2016-09-27 Interdigital Patent Holdings, Inc. Interference measurement in wireless networks
US20130083681A1 (en) 2011-09-30 2013-04-04 Research In Motion Limited Methods of Channel State Information Feedback and Transmission in Coordinated Multi-Point Wireless Communications System
US9025574B2 (en) 2011-08-12 2015-05-05 Blackberry Limited Methods of channel state information feedback and transmission in coordinated multi-point wireless communications system
US9462557B2 (en) 2011-08-15 2016-10-04 Telefonaktiebolaget Lm Ericsson (Publ) Method and an apparatus in a user equipment for controlling transmission power of the user equipment
US9337984B2 (en) 2011-08-19 2016-05-10 Lg Electronics Inc. Method for transmitting uplink control information, user equipment, method for receiving uplink control information, and base station
CN102983934B (zh) 2011-09-06 2015-12-02 华为技术有限公司 多用户多输入多输出系统中线性预编码的方法及装置
SG10201601953SA (en) 2011-09-14 2016-04-28 Rearden Llc Systems and methods to exploit areas of coherence in wireless systems
US9124475B2 (en) 2011-09-19 2015-09-01 Alcatel Lucent Method and apparatus for interference cancellation for antenna arrays
US8743791B2 (en) 2011-09-22 2014-06-03 Samsung Electronics Co., Ltd. Apparatus and method for uplink transmission in wireless communication systems
US8797966B2 (en) 2011-09-23 2014-08-05 Ofinno Technologies, Llc Channel state information transmission
US20130114437A1 (en) 2011-11-04 2013-05-09 Qualcomm Incorporated Method and apparatus for interference cancellation by a user equipment using blind detection
JP2013123080A (ja) 2011-11-07 2013-06-20 Ntt Docomo Inc 無線通信システム、無線基地局装置、ユーザ端末及び無線通信方法
WO2013073917A1 (ko) 2011-11-17 2013-05-23 엘지전자 주식회사 상향링크 신호 수신 방법 및 기지국과, 상향링크 신호 전송 방법 및 사용자기기
US20130128821A1 (en) 2011-11-18 2013-05-23 Nokia Siemens Networks Oy Demodulation Reference Signal Arrangement For Uplink Coordinated Multi-Point Reception
WO2013080582A1 (en) 2011-12-02 2013-06-06 Nec Corporation Method of providing control information for user equipment in lte communication system
US8731028B2 (en) 2011-12-02 2014-05-20 Futurewei Technologies, Inc. Method and apparatus for modulation and coding scheme adaption in a MIMO system
KR101995430B1 (ko) 2012-01-20 2019-07-02 엘지전자 주식회사 제어 정보 송수신 방법 및 이를 위한 장치
EP2621242A1 (en) 2012-01-26 2013-07-31 Panasonic Corporation Improved discontinuous reception operation with additional wake up opportunities
GB2498815A (en) 2012-01-30 2013-07-31 Renesas Mobile Corp Enhanced PHICH with multibit ACK/NAK
CN103249167B (zh) 2012-02-01 2016-12-21 华为技术有限公司 物理随机接入信道接入方法、基站和用户设备
US20130195086A1 (en) 2012-02-01 2013-08-01 Qualcomm Incorporated Timing management in uplink (ul) coordinated multipoint (comp) transmission
EP3493496B1 (en) 2012-02-03 2020-01-29 Telefonaktiebolaget LM Ericsson (publ) Advanced digital baseband processor
EP2813021A4 (en) 2012-02-08 2015-07-01 Ericsson Telefon Ab L M COMMON ACK / NACK MESSAGES
US9414184B2 (en) 2012-02-15 2016-08-09 Maxlinear Inc. Method and system for broadband near-field communication (BNC) utilizing full spectrum capture (FSC) supporting bridging across wall
JP2015512571A (ja) * 2012-03-16 2015-04-27 インターデイジタル パテント ホールディングス インコーポレイテッド Ｌｔｅｆｄｄネットワークにおける半二重ｆｄｄ動作のための方法
US9526091B2 (en) 2012-03-16 2016-12-20 Intel Corporation Method and apparatus for coordination of self-optimization functions in a wireless network
US9591583B2 (en) 2012-03-17 2017-03-07 Lg Electronics Inc. Method for controlling transmission power of sounding reference signal in wireless communication system and apparatus for same
US9143984B2 (en) 2012-04-13 2015-09-22 Intel Corporation Mapping of enhanced physical downlink control channels in a wireless communication network
AU2013256044B2 (en) 2012-05-04 2017-05-25 Rearden, Llc System and methods for coping with Doppler effects in distributed-input distributed-output wireless systems
WO2013172746A1 (en) 2012-05-16 2013-11-21 Telefonaktiebolaget Lm Ericsson (Publ) Method and arrangement in a wireless communication system
RU2615757C2 (ru) 2012-05-18 2017-04-11 Риарден, Ллк Системы и способы повышения пространственного разнесения в беспроводных системах с распределенным входом-распределенным выходом
US8995410B2 (en) 2012-05-25 2015-03-31 University Of Southern California Airsync: enabling distributed multiuser MIMO with full multiplexing gain
EP2859748A4 (en) * 2012-06-06 2015-11-18 Eden Rock Communications Llc SELF-ORGANIZED NETWORK SYSTEM THAT IS ADJACENT TO THE ADJACENT NETWORK
KR101669701B1 (ko) 2012-06-25 2016-10-26 주식회사 케이티 물리적 상향링크 데이터 채널 맵핑정보 제공방법 및 그 송수신포인트, 물리적 상향링크 데이터 채널의 전송방법, 그 단말
CN103517360B (zh) 2012-06-25 2017-04-19 华为终端有限公司 切换方法、系统及设备
CN103582017B (zh) * 2012-07-31 2017-04-26 华为技术有限公司 终端、网络设备及网络系统接入方法
US8908743B2 (en) 2012-09-26 2014-12-09 Intel Mobile Communications GmbH Receiver with multi layer interference cancellation
WO2014052501A1 (en) * 2012-09-26 2014-04-03 Apple Inc. Method for simultaneously receiving lte and 1x in srlte device
US9055425B2 (en) 2012-09-27 2015-06-09 Nokia Technologies Oy Method and apparatus for enhancing emergency calling with mobile devices
WO2014055294A1 (en) 2012-10-02 2014-04-10 Rearden, Llc Systems and methods for wireless backhaul in distributed-input distributed-output wireless systems
US9191993B2 (en) 2012-11-20 2015-11-17 Adc Telecommunications, Inc. Distributed antenna system with uplink bandwidth for signal analysis
US10194346B2 (en) 2012-11-26 2019-01-29 Rearden, Llc Systems and methods for exploiting inter-cell multiplexing gain in wireless cellular systems via distributed input distributed output technology
US11190947B2 (en) * 2014-04-16 2021-11-30 Rearden, Llc Systems and methods for concurrent spectrum usage within actively used spectrum
US9407302B2 (en) 2012-12-03 2016-08-02 Intel Corporation Communication device, mobile terminal, method for requesting information and method for providing information
US9397820B2 (en) 2013-02-04 2016-07-19 Ubiquiti Networks, Inc. Agile duplexing wireless radio devices
US9936470B2 (en) 2013-02-07 2018-04-03 Commscope Technologies Llc Radio access networks
US9733797B2 (en) 2013-02-08 2017-08-15 Ubiquiti Networks, Inc. Radio system for long-range high speed wireless communication
US9497745B2 (en) * 2013-02-11 2016-11-15 Telefonaktiebolaget L M Ericsson (Publ) Virtual macro cells
US9923621B2 (en) 2013-02-16 2018-03-20 Cable Television Laboratories, Inc. Multiple-input multiple-output (MIMO) communication system
US9241275B2 (en) 2013-02-28 2016-01-19 Cisco Technologies, Inc. Distributed processing distributed-input distributed-output (DIDO) wireless communication
US9851445B2 (en) 2013-04-23 2017-12-26 Dali Systems Co. Ltd. Real-time locating system using GPS time difference of arrival with digital off-air access units and remote units
US9331882B2 (en) 2013-06-05 2016-05-03 Telefonaktiebolaget L M Ericsson (Publ) Crest factor reduction of carrier aggregated signals
US9860907B2 (en) * 2013-08-09 2018-01-02 Telefonaktiebolaget Lm Ericsson (Publ) First and second base stations and methods performed therein
US9451625B2 (en) 2013-09-19 2016-09-20 Telefonaktiebolaget Lm Ericsson (Publ) System and method for providing interference characteristics for interference mitigation
US9915419B2 (en) 2013-09-27 2018-03-13 Hayward Industries, Inc. Light with expanding compression member
CN104519514B (zh) 2013-10-08 2019-12-06 中兴通讯股份有限公司 一种减小节点间干扰的方法、节点和系统
US9585408B2 (en) 2013-10-28 2017-03-07 Elwha Llc Non-thermal electromagnetic sterilization
EP2889957A1 (en) 2013-12-30 2015-07-01 Clemens Rheinfelder Active antenna system with distributed transceiver system
US9638028B2 (en) 2014-08-27 2017-05-02 Schlumberger Technology Corporation Electromagnetic telemetry for measurement and logging while drilling and magnetic ranging between wellbores
US9307506B1 (en) 2014-09-09 2016-04-05 Sprint Communications Company L.P. Implementation of a fiber distributed antenna system network while maintaining synchronization
CN107113032A (zh) 2014-10-09 2017-08-29 安德鲁无线系统有限公司 用于mimo信号的分布式天线系统
WO2016076785A1 (en) 2014-11-14 2016-05-19 Telefonaktiebolaget L M Ericsson (Publ) Feedback channel transmission and detection in multi antenna wireless communication systems
US10205513B1 (en) 2015-03-27 2019-02-12 Lockheed Martin Corporation System and method for improved beyond line-of-sight communications using natural phenomena
US9615263B2 (en) 2015-05-27 2017-04-04 Telefonaktiebolaget L M Ericsson (Publ) Method to improve the performance in cell range expansion using location based codebook subset restriction
US9883529B2 (en) 2015-06-19 2018-01-30 Intel IP Corporation Controlling uplink transmissions in communication systems with scheduled trigger frames
EP3343823B1 (en) 2015-10-23 2020-12-23 Samsung Electronics Co., Ltd. Method and device for transmitting and receiving channel state information in mobile communication system
CN106685495A (zh) 2015-11-05 2017-05-17 索尼公司 无线通信方法和无线通信设备
EP3535625B1 (en) 2016-12-07 2021-02-24 Arilou Information Security Technologies Ltd. System and method for using signal waveform analysis for detecting a change in a wired network
CN108964723A (zh) 2017-05-17 2018-12-07 索尼公司 电子设备和通信方法
US10749583B2 (en) 2017-06-14 2020-08-18 Lg Electronics Inc. Method for transmitting and receiving channel state information in wireless communication system and device for the same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102439891A (zh) * 2009-05-12 2012-05-02 翔跃通信公司 用于频分复用和时分复用通信模式的双模无线电装置
CN103069903A (zh) * 2010-08-13 2013-04-24 高通股份有限公司 用于不对称上行链路/下行链路频谱的后向兼容lte系统
CN104025684A (zh) * 2012-12-31 2014-09-03 华为技术有限公司 信息传输方法和装置

Also Published As

Publication number Publication date
RU2016144927A3 (zh) 2018-10-31
CA2945987A1 (en) 2015-10-22
CN106465465A (zh) 2017-02-22
KR20160145083A (ko) 2016-12-19
NZ725064A (en) 2020-02-28
JP2017519390A (ja) 2017-07-13
EP3132650A1 (en) 2017-02-22
IL248265B (en) 2020-06-30
SG11201608574VA (en) 2016-11-29
KR20210148393A (ko) 2021-12-07
US20220078627A1 (en) 2022-03-10
IL248265A0 (en) 2016-11-30
MX2016013512A (es) 2017-01-18
AU2015248161B2 (en) 2019-01-17
US11190947B2 (en) 2021-11-30
EP3132650A4 (en) 2018-03-07
KR20230058542A (ko) 2023-05-03
US20150304855A1 (en) 2015-10-22
RU2016144927A (ru) 2018-05-17
SG10201808922XA (en) 2018-11-29
BR112016023760A2 (pt) 2017-08-15
RU2714104C2 (ru) 2020-02-11
WO2015160497A1 (en) 2015-10-22
AU2015248161A1 (en) 2016-10-27

Similar Documents

Publication Publication Date Title
CN106465465B (zh) 在活跃使用的频谱内进行并行频谱使用的系统和方法
JP2021168493A (ja) 分散アンテナシステムにおいて仮想ラジオインスタンスをコヒーレンスの物理的ボリュームへとマッピングするためのシステム及び方法
AU2022215154A1 (en) Systems and methods for mitigating interference within actively used spectrum
US20220166474A1 (en) Systems and methods for mitigating interference within actively used spectrum
KR102667404B1 (ko) 능동적으로 사용되는 스펙트럼 내에서의 간섭을 완화시키기 위한 시스템 및 방법
RU2818250C2 (ru) Системы и способы картирования виртуальных радиоточек в физические объемы когерентности в распределенных антенных системах
NZ791129A (en) Systems and methods for mitigating interference within actively used spectrum
BR112016023760B1 (pt) Sistemas e métodos para uso concomitante de espectro dentro do espectro ativamente usado

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
REG Reference to a national code

Ref country code: HK

Ref legal event code: DE

Ref document number: 1233823

Country of ref document: HK

GR01 Patent grant
GR01 Patent grant