CN102326336A - 用于无线网络的差分码本、利用它的mimo波束成形系统以及利用它减少用于无线网络的mimo波束成形系统中的量化误差的方法 - Google Patents
用于无线网络的差分码本、利用它的mimo波束成形系统以及利用它减少用于无线网络的mimo波束成形系统中的量化误差的方法 Download PDFInfo
- Publication number
- CN102326336A CN102326336A CN2010800095726A CN201080009572A CN102326336A CN 102326336 A CN102326336 A CN 102326336A CN 2010800095726 A CN2010800095726 A CN 2010800095726A CN 201080009572 A CN201080009572 A CN 201080009572A CN 102326336 A CN102326336 A CN 102326336A
- Authority
- CN
- China
- Prior art keywords
- code
- center
- code book
- difference
- code word
- 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.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
- H04W68/02—Arrangements for increasing efficiency of notification or paging channel
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
- H04W68/08—User notification, e.g. alerting and paging, for incoming communication, change of service or the like using multi-step notification by increasing the notification area
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
- H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
- H04B7/0478—Special codebook structures directed to feedback optimisation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
-
- 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
- H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/042—Public Land Mobile systems, e.g. cellular systems
- H04W84/045—Public Land Mobile systems, e.g. cellular systems using private Base Stations, e.g. femto Base Stations, home Node B
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Transmission System (AREA)
- Telephonic Communication Services (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
- Communication Control (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
Abstract
Description
发明领域
本发明公开的实施例一般涉及无线通信,且尤其涉及无线通信网络中的波束成形。
发明背景
在包括用户站和基站的无线网络中的闭环多输入/多输出(MIMO)波束成形中,用户站(在本文中有时也称为移动设备或接收机)量化理想的波束成形矩阵并将与理想的波束成形矩阵相对应的量化索引(quantization index)发送回基站(在本文中有时也称为发射机)。基站根据反馈的索引重新构造波束成形矩阵并进行波束成形。已知波束成形提高链路性能和系统吞吐量。
可差分地反馈波束成形矩阵。可通过码本量化当前波束成形矩阵和前一波束成形矩阵之间的变化,并且可反馈相应的量化索引。量化码本确定波束成形准确性和跟踪能力。
本发明的实施例可应用于包括WiMAX(全球微波互连接入)网络或类似物的无线局域网(WLAN)或无线城域网(WMAN)。WiMAX技术基于包括IEEE 802.16e、IEEE 802.16m等的IEEE 802.16标准族。
附图简述
通过阅读以下的详细描述并结合附图将更好地理解所公开的实施例,在附图中:
图1是根据本发明实施例的差分码本的程式化表示;
图2和3是根据本发明的实施例利用输入对称的量化码本的描绘;
图4是根据本发明的实施例的格拉斯曼流形(Grassmannian manifold)上的正交矩阵的简明表示;以及
图5是示出根据本发明的实施例减少用于无线网络的MIMO波束成形系统中的量化误差的方法的流程图。
为了简化和清楚说明的目的,附图示出一般的构造方式,且省略公知特征和技术的描述和细节,以避免不必要地使所述本发明的实施例的讨论晦涩。此外,附图中的各要素不一定按比例绘制。举例而言,相对于其它要素,附图中一些要素的尺寸可被放大来帮助改善对本发明各实施例的理解。不同附图中的相同附图标记表示相同要素,而类似附图标记可能但不限于表示类似要素。
在说明书和权利要求书中的术语“第一”、“第二”、“第三”、“第四”等(如果有的话)用于在类似元件之间进行区分,且未必是用于描述特定次序或时间顺序。要理解,在适当情况下如此使用的这些术语可互换,例如使得本文所述的本发明实施例能够以不同于本文所述或所示的其它顺序来操作。类似地,如果本文所述的方法包括一系列步骤,本文所呈现的这些步骤的顺序并非必须是可执行这些步骤的唯一顺序,且一些所陈述的步骤可被省略和/或一些本文未描述的其它步骤可被添加到该方法。此外,术语“包括”、“包含”、“具有”及其任何变形旨在适用非排他地包括,使得包括一系列要素的过程、方法、制品或装置不一定限于那些要素,但可包括未明确列出或这些过程、方法、制品或装置所固有的其它要素。
在说明书和权利要求书中的术语“左”、“右”、“前”、“后”、“顶”、“底”、“上”、“下”等(如果有的话)用于描述的目的,且不一定用于描述永久的相对位置。应该理解如此使用的术语在适当情况下是可以互换的,使得本文所述的本发明的实施例例如能够以本文示出或以其它方式描述的方向以外的其它方向操作。如本文所使用的术语“耦合”被定义为电或非电方式的直接或间接连接。在本文中描述为彼此“相邻”的物体按照适于使用该短语的上下文可以在物理上彼此接触、彼此紧邻或彼此处于同一通用区域或区。在本文中短语“在一个实施例中”的出现不一定全指同一实施例。
具体实施方式
在很多情况下量化码本的输入关于中心对称。因此码本可被设计成利用该对称,诸如通过选择码本位置以便减少量化误差。因此,在本发明的至少一个实施例中,用于无线网络的差分码本包括多个码字和作为该多个码字的中心位置的 其中ek表示包括多行的列向量,所述多行包含第k行,且其中第k行上的条目是1,且该多行中除第k行外的每行上的条目是0,其中G是包括单位矩阵的任意Ns乘Ns酉矩阵,且其中Ns表示无线网络中的若干空间流。多个码字中的至少两个关于中心位置对称。当G是单位矩阵时,
现在参考附图,图1是根据本发明的实施例的差分码本100的程式化表示。在发射机和接收机处已知先前的波束成形矩阵需要相对于差分量化当前的波束成形矩阵量化码本围绕部署,使得码字之一可接近最接近的码字的索引被反馈至发射机。
在美国专利申请S/N 12/584,142中详细讨论了可利用差分码本100和差分反馈方案及以上陈述的概念,该专利通过引用整体结合于此。为了方便,以下重现该示例性差分反馈方案的某些细节。
在用户站处的差分:
在用户站处的量化:
在基站处的波束成形矩阵重新构造:
在基站处的波束成形:
在(1)中,NtxNs V(t)和分别是对于帧t的理想波束成形矩阵和经量化波束成形矩阵,且是Ntx(Nt-Ns)且具有正交于的互补列。Nt是发射机处的发射天线的数量。在(2)中,可将差分码本Cd称为极帽。在(4)中,y是接收的向量,H是大小为NrxNt的信道矩阵(其中Nr是接收天线的数量),是大小为Nt乘Ns的重新构造的波束成形矩阵(或向量),s是Nsx1数据向量,且n是复加性白高斯噪声加干扰。
实际上,(1)和(2)是说明性的且趋向于使性能劣化,(1)和(2)被组合。接收机使经波束成形的信道容量(或另一种性能度量)最大化,这通过将每个码字插入测试中的经波束成形的信道容量完成的,如下
其中 表达式(5)可被简化为
一个简单的配置如下。其余的码字具有至中心相等的距离。注意所有的码字均在适当的(包括但不限于格拉斯曼、斯蒂菲尔(Stiefel))流形上。对于两个码字之间的距离有多个定义,例如,弦距离和平均信道容量损耗。对于低信噪比(SNR)区域,距离可以是
d(A,B)=求迹(AHBBHA), (7)
其中A和B是两个NtxNs码字。对于其他SNR区域,距离可以是
其中γ是信噪比或预定标量。
为了简化起见,可将(8)简化为
d(A,B)=det(AHBBHA). (9)
图2描绘根据本发明的实施例的差分码本200。差分码本200的中心是但无码字位于该中心上。在这种情况下,所有的码字被设置在处的中心周围。由于至少以下两种原因该配置是期望的。第一,任意两个码字之间的距离可大于任意码字和中心之间的距离。换言之,在中心外量化误差比在中心附近要大。因此,没有码字被设置在中心上,以减少中心外的大量化误差。第二,在某些情形下,波束成形矩阵可倾向于在相邻反馈之间显著改变。因此,码字不需要将波束成形矩阵保持在相同位置。码字具有至中心相等的距离d0。任意码字对之间的距离是d1。当码字的数量不远远大于差分码本200的自由度且码本的半径相对较大时,该结构会是期望的。例如,用于跟踪4x2波束成形矩阵的差分码本具有自由度7。如果码字和码本中心之间的距离是20度且码本的数量是8,则差分码本200会是期望的。
图3描绘根据本发明的实施例的差分码本300。与差分码本200不同,差分码本300具有中心码字。从中心码字至其它码字的距离是d0。非中心码字彼此等距,具有分离距离d1,如图所示。
无线网络可定义若干具有不同尺寸d0的差分码本。d0越小,量化误差越小。因此,在一个实施例中,如下进一步讨论的,减小MIMO波束成形系统中的量化误差的方法包括使d0最小化,或者换言之,使d0限制为小于某一预定极限。然而,对于小的d0,反馈可能不能跟踪波束成形矩阵的快速变化,该波束成形矩阵在两相邻反馈之间变化大于d0。另一方面,大的d0良好地跟踪信道变化,代价是较大的量化误差。
实际上,基站可根据例如其天线配置(或相互关系)和移动速度选择差分码本之一。然后可将所选的码本的索引发送到移动站。或者,移动站可基于例如理想波束成形矩阵的相互关系(或变化)选择差分码本之一。例如,移动站可根据训练序列(mid-ambles)估计信道矩阵并计算理想的波束成形矩阵。还计算波束成形矩阵的变化。基于变化,移动站选择一个差分码本并将相应的码本索引发送至基站。
因此,本发明的某些实施例涉及用于无线网络的MIMO波束成形系统,其包括多个差分码本,每个差分码本类似于本文之前描述的差分码本,即,每个差分码本(除其它特性外)具有多个码字且包含 作为多个码字的中心位置,如前所述。每个差分码本还包含关于中心位置对称且各自与码本中心分离开一分离距离的附加码字,如前所述。每个差分码本具有其自身的唯一的分离距离。换言之,多个差分码本的每一个的分离距离与多个差分码本中其余的每一个的分离距离不同。在某些实施例中,对于多个差分码本中的每一个,附加码字与该码本中的每个其它码字等距。
为了降低复杂度,每个码字的每列的一个条目可转换成实数。例如,可通过减去每个列的全局相来将码字的第一行转换成正数或0。对于格拉斯曼码本,其码字是格拉斯曼流形中的子平面或线,可进一步降低存储和计算复杂度。可将码字矩阵转换成在码字矩阵的四角之一处具有零三角形的矩阵,如图4所示。
图5是示出根据本发明的实施例减少用于无线网络的MIMO波束成形系统中的量化误差的方法500的流程图。
方法500的步骤510是定义差分码本,其包括码本中心、多个码字、作为多个码字的中心位置的 以及关于该中心位置对称且各自与码本中心分离一分离距离的附加码字。作为一示例,差分码本可类似于在图1、2和3中分别示出的差分码本100、200和300中的一个或多个。
方法500的步骤520是将分离距离限制为小于预定限值。在一个实施例中,预定限值可以是15或20度,即中心和任意外部码字之间的角度。
尽管已经参照特定实施例描述了本发明,但本领域的技术人员将理解可在不背离本发明的范围的情况下进行各种改变。因此,本发明实施例的公开内容旨在说明本发明的范围,而非旨在限制。本发明的范围旨在应仅由所附权利要求所主张的范围来限制。例如,对于本领域普通技术人员,显而易见的是可在各个实施例中实现本文讨论的差分码本和相关联的结构和方法,且这些实施例中的某些实施例的前述某些讨论不一定表示所有可能实施例的全部描述。
另外,参考特定实施例描述了益处、其它优点和问题解决方案。但是,这些好处、优点、对问题的解决方案以及可使任何好处、优点或解决方案产生或变得更显著的任何元素不能被解释为任何或所有权利要求的关键的、必要的、或实质的特征或要素。
此外,如果实施例和/或限制有以下情况时,在专用原则下本文所公开的实施例和限制不专用于公众:(1)在权利要求中未明确要求的;且(2)其在等价原则下,权利要求中明确的元素和/或限制的可能等价物。
Claims (19)
1.一种用于无线网络的差分码本,所述差分码本包括:
多个码字;以及
作为所述多个码字的中心位置的 其中ek表示包括多行的列向量,所述多行包含第k行,且其中第k行上的条目是1且所述多行中除第k行外的每行上的条目是0,其中G是包括单位矩阵的任意Ns乘Ns酉矩阵,且Ns表示无线网络中的若干空间流,
其中:
所述多个码字中的至少两个关于中心位置对称。
2.如权利要求1所述的差分码本,其特征在于:
所述多个码字中的一个处于中心位置。
3.如权利要求2所述的差分码本,其特征在于:
所述多个码字与中心位置等距。
4.如权利要求3所述的差分码本,其特征在于:
所述多个码字彼此等距。
5.如权利要求1所述的差分码本,其特征在于:
没有码字处于中心位置。
6.如权利要求5所述的差分码本,其特征在于:
所述多个码字与中心位置等距。
7.如权利要求6所述的差分码本,其特征在于:
所述多个码字彼此等距。
8.如权利要求1所述的差分码本,其特征在于:
所述码字的每列的至少一个条目是实数。
9.一种用于无线网络的MIMO波束成形系统,所述MIMO波束成形系统包括:
多个差分码本,每一个差分码本:
具有码本中心和多个码字;
包含作为所述多个码字的中心位置的 其中ek表示包括多行的列向量,所述多行包含第k行,且其中第k行上的条目是1且所述多行中除第k行外的每行上的条目是0,其中G是包括单位矩阵的任意Ns乘Ns酉矩阵,且Ns表示无线网络中的若干空间流;以及
包含关于所述中心位置对称且各自与码本中心分离开一分离距离的至少两个码字,
其中:
所述多个差分码本的每一个的分离距离与所述多个差分码本中其余的每一个的分离距离不同。
10.如权利要求9所述的MIMO波束成形系统,其特征在于:
对于所述多个差分码本中的每一个,所述码字之一在码本中心。
11.如权利要求10所述的MIMO波束成形系统,其特征在于:
对于所述多个差分码本中的每一个,所述多个码字彼此等距。
12.如权利要求9所述的MIMO波束成形系统,其特征在于:
没有码字处于所述多个差分码本中的任一个的中心。
13.如权利要求12所述的MIMO波束成形系统,其特征在于:
对于所述多个差分码本中的每一个,所述多个码字彼此等距。
14.如权利要求9所述的MIMO波束成形系统,其特征在于:
对于所述多个差分码本中的每一个,所述码字的每列的至少一个条目是实数。
15.一种减小用于无线网络的MIMO波束成形系统中的量化误差的方法,所述方法包括:
定义差分码本,所述差分码本包括:
码本中心和多个码字;
作为所述多个码字的中心位置的 其中ek表示包括多行的列向量,所述多行包含第k行,且其中第k行上的条目是1且所述多行中除第k行外的每行上的条目是0,其中G是包括单位矩阵的任意Ns乘Ns酉矩阵,且Ns表示无线网络中的若干空间流;以及
关于所述中心位置对称且各自与码本中心分离开一分离距离的至少两个码字;以及
将所述分离距离限制为小于预定限值。
16.如权利要求15所述的方法,其特征在于:
所述预定限值是20度。
17.如权利要求15所述的方法,其特征在于:
所述码字的每列的至少一个条目是实数。
18.如权利要求15所述的方法,其特征在于:
所述码字之一处于所述差分码本的中心位置;以及
所述多个码字彼此等距。
19.如权利要求15所述的方法,其特征在于:
没有码字处于中心位置;以及
所述多个码字彼此等距。
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15688209P | 2009-03-03 | 2009-03-03 | |
US61/156,882 | 2009-03-03 | ||
US12/658,105 | 2010-02-02 | ||
US12/658,105 US20100226357A1 (en) | 2009-03-03 | 2010-02-02 | Differential codebook for a wireless network, MIMO beamforming system using same, and method of reducing a quantization error in a MIMO beamforming system for a wireless network using same |
PCT/US2010/025731 WO2010101809A2 (en) | 2009-03-03 | 2010-03-01 | Differential codebook for a wireless network, mimo beamforming system using same, and method of reducing a quantization error in a mimo beamforming system for a wireless network using same |
Publications (2)
Publication Number | Publication Date |
---|---|
CN102326336A true CN102326336A (zh) | 2012-01-18 |
CN102326336B CN102326336B (zh) | 2014-12-17 |
Family
ID=42678202
Family Applications (5)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2010800107884A Pending CN102342038A (zh) | 2009-03-03 | 2010-03-01 | 无线通信系统中的信道质量数据的传送 |
CN2010800106453A Pending CN102342161A (zh) | 2009-03-03 | 2010-03-01 | 用于毫微微小区部署的有效寻呼操作 |
CN201080009572.6A Expired - Fee Related CN102326336B (zh) | 2009-03-03 | 2010-03-01 | 用于无线网络的差分码本、利用它的mimo波束成形系统以及利用它减少用于无线网络的mimo波束成形系统中的量化误差的方法 |
CN201080010811.XA Expired - Fee Related CN102342074B (zh) | 2009-03-03 | 2010-03-03 | 用于移动wimax系统的前同步码的传送的方法和设备 |
CN2010800107920A Pending CN102342073A (zh) | 2009-03-03 | 2010-03-03 | 突发尺寸信号发送和分区规则 |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2010800107884A Pending CN102342038A (zh) | 2009-03-03 | 2010-03-01 | 无线通信系统中的信道质量数据的传送 |
CN2010800106453A Pending CN102342161A (zh) | 2009-03-03 | 2010-03-01 | 用于毫微微小区部署的有效寻呼操作 |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201080010811.XA Expired - Fee Related CN102342074B (zh) | 2009-03-03 | 2010-03-03 | 用于移动wimax系统的前同步码的传送的方法和设备 |
CN2010800107920A Pending CN102342073A (zh) | 2009-03-03 | 2010-03-03 | 突发尺寸信号发送和分区规则 |
Country Status (10)
Country | Link |
---|---|
US (7) | US8301177B2 (zh) |
EP (5) | EP2404390A4 (zh) |
JP (4) | JP5596061B2 (zh) |
KR (5) | KR101294460B1 (zh) |
CN (5) | CN102342038A (zh) |
BR (3) | BRPI1006754A2 (zh) |
ES (1) | ES2690658T3 (zh) |
HK (1) | HK1164563A1 (zh) |
HU (1) | HUE040021T2 (zh) |
WO (5) | WO2010101809A2 (zh) |
Families Citing this family (44)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7907677B2 (en) * | 2007-08-10 | 2011-03-15 | Intel Corporation | Open loop MU-MIMO |
CN102144419B (zh) * | 2008-07-03 | 2014-08-13 | 苹果公司 | 用于实现频分复用网络中的切换的方法和装置 |
JP5279903B2 (ja) * | 2008-07-07 | 2013-09-04 | サムスン エレクトロニクス カンパニー リミテッド | 混合配置における接続モードの間に端末をハンドオフするための方法 |
US8301177B2 (en) | 2009-03-03 | 2012-10-30 | Intel Corporation | Efficient paging operation for femtocell deployment |
CN102396248B (zh) * | 2009-03-16 | 2016-08-17 | 华为技术有限公司 | 传输信号的方法、通信装置及系统 |
KR101670744B1 (ko) | 2009-04-13 | 2016-11-09 | 엘지전자 주식회사 | 최적화된 랭크 3 코드북을 이용한 상향링크 신호 송수신 |
US8238323B2 (en) * | 2009-06-11 | 2012-08-07 | Intel Corporation | OFDMA cellular network and method for mitigating interference |
KR101618075B1 (ko) | 2009-06-26 | 2016-05-09 | 삼성전자주식회사 | 무선통신시스템에서 프리앰블을 전송하기 위한 장치 및 방법 |
EP2457354B1 (en) | 2009-06-26 | 2020-09-09 | PlusN, LLC | System and method for controlling combined radio signals |
US9210019B2 (en) * | 2009-06-26 | 2015-12-08 | Samsung Electronics Co., Ltd. | Apparatus and method for transmitting preamble in a wireless communication system |
US8619673B2 (en) * | 2009-07-08 | 2013-12-31 | Mediatek Inc. | Preamble partition and cell identification procedure in wireless communication systems |
WO2011046277A1 (en) * | 2009-10-12 | 2011-04-21 | Lg Electronics Inc. | Method for allocating preamble sequence subblock for supporting irregular system bandwidth in wireless communication system and an apparatus therefor |
KR20110044938A (ko) * | 2009-10-25 | 2011-05-03 | 엘지전자 주식회사 | Sa-프리앰블을 전송하는 방법 및 기지국과, 상기 sa-프리앰블 수신하는 방법 및 사용자기기 |
US8379619B2 (en) * | 2009-11-06 | 2013-02-19 | Intel Corporation | Subcarrier permutation to achieve high frequency diversity of OFDMA systems |
KR101751060B1 (ko) * | 2009-12-18 | 2017-06-28 | 엘지전자 주식회사 | 무선 통신 시스템에서 사운딩 채널 할당 방법 및 장치 |
US8509170B2 (en) * | 2009-12-18 | 2013-08-13 | Samsung Electronics Co., Ltd. | Apparatus and method for transmitting preamble in broadband wireless communication system |
US8510621B2 (en) * | 2009-12-29 | 2013-08-13 | Industrial Technology Research Institute | Method and apparatus for providing resource unit based data block partition |
KR101717298B1 (ko) * | 2010-05-10 | 2017-03-17 | 엘지전자 주식회사 | 무선 통신 시스템에서 상향링크 제어 채널을 위한 자원 할당 방법 및 장치 |
US8594718B2 (en) | 2010-06-18 | 2013-11-26 | Intel Corporation | Uplink power headroom calculation and reporting for OFDMA carrier aggregation communication system |
WO2012002858A1 (en) * | 2010-07-01 | 2012-01-05 | Telefonaktiebolaget L M Ericsson (Publ) | A method and an arrangement for determining a channel quality offset |
US20120008639A1 (en) * | 2010-07-12 | 2012-01-12 | Futurewei Technologies, Inc. | System and Method for Operating with Groups of Communications Devices in a Wireless Communications System |
US8619654B2 (en) | 2010-08-13 | 2013-12-31 | Intel Corporation | Base station selection method for heterogeneous overlay networks |
US8446971B2 (en) * | 2010-08-23 | 2013-05-21 | Intel Corporation | Communication station and method for efficiently providing channel feedback for MIMO communications |
KR20120036018A (ko) * | 2010-10-07 | 2012-04-17 | 삼성전자주식회사 | 무선통신 시스템에서 고속 주파수 오프셋 추정 장치 및 방법 |
JP5666871B2 (ja) * | 2010-10-12 | 2015-02-12 | シャープ株式会社 | 無線通信システム、基地局装置、無線通信方法 |
CN103262436B (zh) * | 2011-03-16 | 2016-05-18 | 日电(中国)有限公司 | 用于波束成形的方法、发射机和接收机 |
CN102917436B (zh) * | 2011-08-02 | 2017-03-15 | 上海贝尔股份有限公司 | 在共小区标识的异构网络中进行上行功率控制的方法 |
KR101221023B1 (ko) | 2011-08-31 | 2013-01-21 | 충북대학교 산학협력단 | 다중 송수신 안테나 무선채널의 시간 상관을 이용한 차분 코드북 생성 방법 및 이를 기록한 기록매체 |
CN105591718B (zh) * | 2011-11-09 | 2019-10-01 | 华为技术有限公司 | 传输信息的方法及装置 |
US9320013B2 (en) | 2011-12-02 | 2016-04-19 | Qualcomm Incorporation | Methods and apparatuses for improved paging area identifier selection in wireless networks containing low power base stations |
CN103974265B (zh) * | 2013-01-28 | 2017-11-03 | 华为技术有限公司 | 一种上行干扰抑制的方法及设备 |
CN103796229B (zh) * | 2013-09-16 | 2017-09-12 | 中兴通讯股份有限公司 | 一种会话链路控制方法及装置 |
JP6398728B2 (ja) | 2014-07-11 | 2018-10-03 | ソニー株式会社 | 情報処理装置および情報処理方法 |
WO2016022287A1 (en) | 2014-08-07 | 2016-02-11 | Coherent Logix, Incorporated | Multi-partition radio frames |
BR122023024931A2 (pt) * | 2014-08-07 | 2024-01-23 | ONE Media, LLC | Aparelho e método para transmitir um fluxo de transporte de taxa variável |
SE539871C2 (en) * | 2015-02-04 | 2017-12-27 | Lumenradio Ab | A method and a system for selecting communication parameters in a wireless network |
CN106776531B (zh) * | 2015-11-24 | 2020-02-11 | 北京国双科技有限公司 | 语料处理方法及装置 |
ES2958267T3 (es) * | 2016-01-14 | 2024-02-06 | Panasonic Ip Man Co Ltd | Procedimiento y sistema para relleno y extensión de paquetes para transmisión multiusuario de enlace descendente |
JP6860581B2 (ja) | 2016-03-29 | 2021-04-14 | オッポ広東移動通信有限公司Guangdong Oppo Mobile Telecommunications Corp., Ltd. | デバイスツーデバイス通信の伝送リソースを確定するための方法及び装置 |
US10873403B2 (en) | 2016-09-02 | 2020-12-22 | Qualcomm Incorporated | Signaling mechanism to enable local operation for multi-antenna wireless communication systems |
CN106341216B (zh) * | 2016-10-10 | 2019-07-12 | 东南大学 | 一种无线通信链路自适应方法及上下行链路自适应方法 |
US10686564B2 (en) * | 2017-04-18 | 2020-06-16 | Qualcomm Incorporated | Pre-timed and on-demand HARQ Ack feedback |
US10938504B2 (en) * | 2017-05-05 | 2021-03-02 | Qualcomm Incorporated | Enhancements to modulation order determination |
EP3525374B1 (en) * | 2018-02-07 | 2021-10-06 | Volkswagen Aktiengesellschaft | Method for data communication between at least two participants of a wireless communication system, corresponding control unit and vehicle equipped with a control unit as well as computer program |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5272529A (en) * | 1992-03-20 | 1993-12-21 | Northwest Starscan Limited Partnership | Adaptive hierarchical subband vector quantization encoder |
CN1957546A (zh) * | 2004-06-25 | 2007-05-02 | 英特尔公司 | 具有量化的波束形成反馈的多输入多输出多载波通信系统及方法 |
US20080232501A1 (en) * | 2007-03-20 | 2008-09-25 | Nec Laboratories America, Inc. | Static and differential precoding codebook for mimo systems |
CN101371483A (zh) * | 2006-02-09 | 2009-02-18 | 英特尔公司 | 利用极冠码本进行波束形成的mimo通信系统和方法 |
Family Cites Families (141)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6067458A (en) * | 1997-07-01 | 2000-05-23 | Qualcomm Incorporated | Method and apparatus for pre-transmission power control using lower rate for high rate communication |
US6593937B2 (en) * | 1998-06-18 | 2003-07-15 | Sony Corporation | Method of and apparatus for handling high bandwidth on-screen-display graphics data over a distributed IEEE 1394 network utilizing an isochronous data transmission format |
US6456858B1 (en) * | 1998-12-21 | 2002-09-24 | Verizon Wireless | System and methods in a dual mode wireless system for transmitting rescan command based on detected network conditions |
US7783299B2 (en) * | 1999-01-08 | 2010-08-24 | Trueposition, Inc. | Advanced triggers for location-based service applications in a wireless location system |
US6973140B2 (en) * | 1999-03-05 | 2005-12-06 | Ipr Licensing, Inc. | Maximizing data rate by adjusting codes and code rates in CDMA system |
US6917603B2 (en) * | 2000-01-20 | 2005-07-12 | Nortel Networks Limited | Servicing multiple high speed data users in shared packets of a high speed wireless channel |
US6891841B2 (en) * | 2001-03-12 | 2005-05-10 | Advent Networks, Inc. | Time division multiple access over broadband modulation method and apparatus |
US20030039211A1 (en) * | 2001-08-23 | 2003-02-27 | Hvostov Harry S. | Distributed bandwidth allocation architecture |
US7346032B2 (en) * | 2001-12-07 | 2008-03-18 | Qualcomm Incorporated | Method and apparatus for effecting handoff between different cellular communications systems |
JP2003198651A (ja) | 2001-12-27 | 2003-07-11 | Mitsubishi Electric Corp | 最大ドップラー周波数推定装置および適応変調無線通信装置 |
KR100754552B1 (ko) * | 2001-12-28 | 2007-09-05 | 삼성전자주식회사 | 고속 순방향 패킷 접속 방식을 사용하는 통신 시스템에서고속 공통 제어 채널 송수신 장치 및 방법 |
US20040105434A1 (en) * | 2002-08-19 | 2004-06-03 | Allan Baw | EtherCell |
US20040203383A1 (en) * | 2002-12-31 | 2004-10-14 | Kelton James Robert | System for providing data to multiple devices and method thereof |
US6927728B2 (en) | 2003-03-13 | 2005-08-09 | Motorola, Inc. | Method and apparatus for multi-antenna transmission |
RU2380859C2 (ru) * | 2003-06-18 | 2010-01-27 | Квэлкомм Инкорпорейтед | Система и способ жесткой передачи обслуживания gsm |
US7120854B2 (en) * | 2003-08-18 | 2006-10-10 | Texas Instruments Incorporated | Wireless access modem having downstream channel resynchronization method |
US7336200B2 (en) | 2003-09-05 | 2008-02-26 | Itron, Inc. | Data communication protocol in an automatic meter reading system |
US8090857B2 (en) * | 2003-11-24 | 2012-01-03 | Qualcomm Atheros, Inc. | Medium access control layer that encapsulates data from a plurality of received data units into a plurality of independently transmittable blocks |
US7280804B2 (en) * | 2004-01-30 | 2007-10-09 | Intel Corporation | Channel adaptation using variable sounding signal rates |
US8000223B2 (en) * | 2004-04-12 | 2011-08-16 | Broadcom Corporation | Method and system for multi-antenna preambles for wireless networks preserving backward compatibility |
US7411898B2 (en) * | 2004-05-10 | 2008-08-12 | Infineon Technologies Ag | Preamble generator for a multiband OFDM transceiver |
US20050257117A1 (en) | 2004-05-12 | 2005-11-17 | Weirong Chiang | Method and circuit for determining an ending of an ethernet frame |
KR100965694B1 (ko) * | 2004-06-15 | 2010-06-24 | 삼성전자주식회사 | 광대역 무선 접속 통신 시스템에서 소프트 핸드오버 지원을 위한 시스템 및 방법 |
EP2442513A1 (en) * | 2004-06-24 | 2012-04-18 | Nortel Networks Limited | Preambles in OFDMA System |
SE0401647D0 (sv) * | 2004-06-28 | 2004-06-28 | Anoto Ab | Coding and decoding of data |
KR101080539B1 (ko) * | 2004-08-09 | 2011-11-04 | 엘지전자 주식회사 | 광대역 무선접속 시스템의 유휴모드 이동단말을 위한메시지 전송방법 |
WO2006034577A1 (en) * | 2004-09-30 | 2006-04-06 | Nortel Networks Limited | Channel sounding in ofdma system |
KR100589896B1 (ko) * | 2004-12-17 | 2006-06-14 | 한국전자통신연구원 | 직교 주파수 분할 다중 접속 시스템의 이동 단말 장치 및그 장치에서의 송신 전력 제어 방법 |
KR101080970B1 (ko) * | 2004-12-27 | 2011-11-09 | 엘지전자 주식회사 | 광대역 무선접속 시스템에 적용되는 디코드 정보 전송 방법 |
JP5055132B2 (ja) * | 2004-12-27 | 2012-10-24 | パンテック カンパニー リミテッド | 直交周波数分割多重化(ofdm)無線接続システムにおけるデータバースト割当方法及び自動再伝送要求(harq)支援方法 |
US7986633B2 (en) * | 2004-12-27 | 2011-07-26 | Lg Electronics Inc. | Method of controlling data transmission for multimedia and broadcasting services in a broadband wireless access system |
KR100981514B1 (ko) * | 2004-12-30 | 2010-09-10 | 삼성전자주식회사 | 직교 주파수 분할 다중 접속 통신 시스템에서 부분 채널 정보 피드백을 이용한 적응 부채널 및 비트 할당 방법 |
US8031793B2 (en) * | 2005-01-19 | 2011-10-04 | Dumitru Mihai Ionescu | Apparatus using concatenations of signal-space codes for jointly encoding across multiple transmit antennas, and employing coordinate interleaving |
WO2006085732A1 (en) * | 2005-02-14 | 2006-08-17 | Lg Electronics Inc. | Method of controlling data transmission for mbs in broadband wireless access system |
KR100950644B1 (ko) * | 2005-03-04 | 2010-04-01 | 삼성전자주식회사 | 다중사용자 다중입출력 시스템의 피드백 방법 |
US8040831B2 (en) * | 2005-03-04 | 2011-10-18 | Cisco Technology, Inc. | Method and system for control channel beamforming |
KR100896280B1 (ko) * | 2005-03-30 | 2009-05-08 | 엘지전자 주식회사 | 광대역 무선접속 시스템의 상향링크 구간 할당 정보 송수신방법 |
DE102005022107B9 (de) * | 2005-05-12 | 2016-04-07 | Infineon Technologies Ag | Vorrichtung und Verfahren zum Bestimmen einer Position eines Bitfehlers in einer Bitfolge |
KR100703287B1 (ko) * | 2005-07-20 | 2007-04-03 | 삼성전자주식회사 | 통신 시스템에서 자원 할당 정보 송수신 시스템 및 방법 |
US7457588B2 (en) * | 2005-08-01 | 2008-11-25 | Motorola, Inc. | Channel quality indicator for time, frequency and spatial channel in terrestrial radio access network |
US7660363B2 (en) * | 2005-08-22 | 2010-02-09 | Nec Laboratories America, Inc. | Minimum error rate lattice space time codes for wireless communication |
JP3989512B2 (ja) * | 2005-09-15 | 2007-10-10 | 三洋電機株式会社 | 無線装置 |
WO2007040451A1 (en) * | 2005-10-04 | 2007-04-12 | Telefonaktiebolaget Lm Ericsson (Publ) | Radio network controller selection for ip-connected radio base station |
CN101278579B (zh) * | 2005-10-04 | 2013-10-16 | 艾利森电话股份有限公司 | 微微无线电基站的自动配置 |
EP1775857B1 (en) * | 2005-10-17 | 2011-05-04 | Samsung Electronics Co., Ltd. | Apparatus and method for transmitting/receiving data in multi-user multi-antenna communication system |
US20070087767A1 (en) | 2005-10-17 | 2007-04-19 | Sameer Pareek | Techniques to manage paging operations for idle mode mobile stations |
US7693555B2 (en) | 2005-10-21 | 2010-04-06 | Intel Corporation | Sleep-mode wireless cell reselection apparatus, systems, and methods |
US7636577B2 (en) | 2005-10-31 | 2009-12-22 | Intel Corporation | Method and apparatus to implement efficient paging in a wireless network |
JP4843046B2 (ja) * | 2005-11-07 | 2011-12-21 | テレフオンアクチーボラゲット エル エム エリクソン(パブル) | リンクアダプテーションのための暗黙的なシグナリング |
US8145243B2 (en) | 2005-11-08 | 2012-03-27 | Intel Corporation | Techniques for location management and paging in a communication system |
US20070105600A1 (en) | 2005-11-08 | 2007-05-10 | Shantidev Mohanty | Techniques to communicate information between foreign agents and paging controllers |
US8396141B2 (en) * | 2005-11-29 | 2013-03-12 | Telefonaktiebolaget L M Ericsson (Publ) | Efficient cell selection |
US20070123287A1 (en) * | 2005-11-30 | 2007-05-31 | Motorola, Inc. | Method and apparatus for providing the status of a wireless communication device in a group network to other members in the group network |
US7602745B2 (en) * | 2005-12-05 | 2009-10-13 | Intel Corporation | Multiple input, multiple output wireless communication system, associated methods and data structures |
US8700082B2 (en) | 2006-01-05 | 2014-04-15 | Qualcomm Incorporated | Power control utilizing multiple rate interference indications |
US20070191031A1 (en) | 2006-02-13 | 2007-08-16 | Shantidev Mohanty | Protocols for communication between paging controllers and paging agents during idle mode paging operations in a wireless network |
WO2007107121A1 (fr) * | 2006-03-22 | 2007-09-27 | Huawei Technologies Co., Ltd. | Procédé et appareil d'envoi de message et d'arrêt d'envoi de message à une station mobile en mode inactif |
US8277724B2 (en) * | 2006-03-31 | 2012-10-02 | The Invention Science Fund I, Llc | Sterilization methods and systems |
CN101427489B (zh) * | 2006-04-25 | 2012-11-28 | 三星电子株式会社 | 在移动通信系统中的无线连接建立的方法和设备 |
JP4834471B2 (ja) * | 2006-06-19 | 2011-12-14 | 株式会社エヌ・ティ・ティ・ドコモ | 移動局装置および基地局装置並びにページング方法 |
US8391894B2 (en) | 2006-06-26 | 2013-03-05 | Intel Corporation | Methods and apparatus for location based services in wireless networks |
US7540337B2 (en) | 2006-07-03 | 2009-06-02 | Mcloughlin Stephen John | Adaptive apparatus, system and method for communicating with a downhole device |
US20080076425A1 (en) * | 2006-09-22 | 2008-03-27 | Amit Khetawat | Method and apparatus for resource management |
US20080014981A1 (en) | 2006-07-17 | 2008-01-17 | Muthaiah Venkatachalam | Methods and apparatus for providing idle mode operations for a platform with a plurality of wireless communication devices |
US7720490B2 (en) | 2006-07-17 | 2010-05-18 | Intel Corporation | Location update operations for idle mode terminals with a plurality of wireless communication interfaces |
US7725115B2 (en) | 2006-07-17 | 2010-05-25 | Intel Corporation | Paging operation for idle mode terminals with a plurality of wireless interfaces |
CN101114851B (zh) * | 2006-07-24 | 2010-10-20 | 大唐移动通信设备有限公司 | 一种hsdpa的功率控制方法及装置 |
JP5268237B2 (ja) | 2006-07-28 | 2013-08-21 | シャープ株式会社 | スケジューリング方法、通信制御装置及び端末装置 |
EP2052561B1 (en) * | 2006-08-18 | 2012-09-26 | Fujitsu Limited | Multi-hop wireless communication systems |
JP4923848B2 (ja) | 2006-08-21 | 2012-04-25 | 日本電気株式会社 | 通信システム及び通信方法並びにそれに用いる移動局及び基地局 |
EP1903813B1 (en) * | 2006-09-19 | 2016-06-22 | Alcatel Lucent | Method, server and base station for synchronization of multicast and broadcast frame portions in wimax systems |
US20080080371A1 (en) | 2006-09-28 | 2008-04-03 | Chunmei Liu | Macro-spatial network multiplexing |
US7702029B2 (en) * | 2006-10-02 | 2010-04-20 | Freescale Semiconductor, Inc. | MIMO precoding enabling spatial multiplexing, power allocation and adaptive modulation and coding |
EP3694262A1 (en) * | 2006-10-03 | 2020-08-12 | InterDigital Technology Corporation | Combined open loop/closed lopp (cqi-based) uplink transmit power control with interference mitigation for e-utra |
US7925259B2 (en) * | 2006-10-03 | 2011-04-12 | Telefonaktiebolaget Lm Ericsson (Publ) | System, method, and arrangement for managing access denials in a wireless communication network |
US7912491B2 (en) | 2006-10-10 | 2011-03-22 | Intel Corporation | Techniques to efficiently transmit control messages to idle and sleep mode users in OFDMA based wireless networks |
US9066348B2 (en) | 2006-10-17 | 2015-06-23 | Intel Coporation | Device, system, and method for fast network entry for wireless devices in idle mode |
US7809355B2 (en) | 2006-10-26 | 2010-10-05 | Intel Corporation | Techniques for identification of connected and idle mode users in wireless networks |
US7911936B2 (en) | 2006-10-30 | 2011-03-22 | Intel Corporation | Techniques to reduce overhead in OFDMA based wireless networks |
US20080132239A1 (en) * | 2006-10-31 | 2008-06-05 | Amit Khetawat | Method and apparatus to enable hand-in for femtocells |
US7990906B2 (en) | 2006-11-03 | 2011-08-02 | Fujitsu Semiconductor Limited | Frame structure for a relay station operating in mobile networks |
GB2443465A (en) * | 2006-11-06 | 2008-05-07 | Fujitsu Ltd | Communication systems |
US20080108336A1 (en) | 2006-11-08 | 2008-05-08 | Muthaiah Venkatachalum | Location-based services in wireless broadband networks |
US20090141676A1 (en) * | 2006-11-14 | 2009-06-04 | Shashikant Maheshwari | Method and apparatus for providing an error control scheme in a multi-hop relay network |
KR100930265B1 (ko) * | 2006-11-16 | 2009-12-09 | 삼성전자주식회사 | 광대역 무선접속 통신시스템에서 복호를 위한 장치 및 방법 |
US20080119209A1 (en) * | 2006-11-21 | 2008-05-22 | Motorola, Inc. | Selection of wireless communication cells based on a mobility state of a wireless device |
US7787891B2 (en) | 2006-12-20 | 2010-08-31 | Intel Corporation | Mobile station localization apparatus, systems, and methods |
WO2008078394A1 (ja) | 2006-12-26 | 2008-07-03 | Fujitsu Limited | 無線通信方法並びに無線制御局及び無線基地局 |
US7630355B2 (en) * | 2007-01-05 | 2009-12-08 | Mitsubishi Electric Research Laboratories, Inc. | Method and system for enabling HARQ operations on channels between stations in wireless communication networks |
US7852794B2 (en) | 2007-01-22 | 2010-12-14 | Intel Corporation | Proxy IGMP client and method for providing multicast broadcast services in a broadband wireless access network |
US20080214213A1 (en) | 2007-03-02 | 2008-09-04 | Kamran Etemad | Determining locations of mobile stations in wireless networks |
US8355378B2 (en) | 2007-03-09 | 2013-01-15 | Intel Corporation | Hierarchical cell deployment |
US8077657B2 (en) | 2007-03-19 | 2011-12-13 | Intel Corporation | Keep-alive handling in a wireless network |
US7860469B2 (en) | 2007-03-19 | 2010-12-28 | Intel Corporation | Sleep optimization for mobile devices in a wireless network |
GB2447635A (en) * | 2007-03-19 | 2008-09-24 | Fujitsu Ltd | Scheduling qos communications between nodes within a predetermined time unit in wimax systems |
KR20080086780A (ko) * | 2007-03-23 | 2008-09-26 | 삼성전자주식회사 | 무선 이동 통신 시스템에서 자원 할당 정보 송수신 시스템 및 방법 |
US7881722B2 (en) * | 2007-04-02 | 2011-02-01 | Telefonaktiebolaget Lm Ericsson (Publ) | Selection of an uplink carrier frequency corresponding to one of co-sited cells having different coverage areas and supporting different uplink data rates |
CN101291174B (zh) * | 2007-04-16 | 2013-03-20 | 中兴通讯股份有限公司 | 一种提高无线通信系统中物理层传输效率的方法 |
JP2008300995A (ja) | 2007-05-29 | 2008-12-11 | Kyocera Corp | 無線基地局及び送信制御方法 |
WO2008135842A2 (en) | 2007-05-07 | 2008-11-13 | Nokia Corporation | Method and apparatus for channel reciprocity in a wireless network |
US8743853B2 (en) | 2007-05-08 | 2014-06-03 | Intel Corporation | Techniques to include virtual private networks in a universal services interface |
WO2008143423A1 (en) | 2007-05-17 | 2008-11-27 | Lg Electronics Inc. | Method for transmitting control information |
KR101364917B1 (ko) * | 2007-05-17 | 2014-02-19 | 엘지전자 주식회사 | 제어 정보 전송방법 |
US8027681B2 (en) * | 2007-06-05 | 2011-09-27 | Alcatel Lucent | Method and apparatus to allow hand-off from a macrocell to a femtocell |
US8131286B2 (en) * | 2007-06-13 | 2012-03-06 | Motorola Mobility, Inc. | Technique for providing broadcast services in a cellular network |
US9078227B2 (en) | 2007-06-14 | 2015-07-07 | Intel Corporation | Location support in wireless networks |
US8005487B2 (en) | 2007-06-14 | 2011-08-23 | Intel Corporation | Techniques for optimization of location determination in wireless network |
US8094633B2 (en) | 2007-06-29 | 2012-01-10 | Intel Corporation | Adaptive paging area |
BRPI0721836A2 (pt) * | 2007-07-06 | 2013-03-05 | Ericsson Telefon Ab L M | dispositivo de terminal màvel, mÉtodo em um dispositivo de terminal màvel, e, estaÇço base |
KR20090014727A (ko) * | 2007-08-07 | 2009-02-11 | 삼성전자주식회사 | 무선통신시스템에서 채널 코딩 장치 및 방법 |
US8693406B2 (en) | 2007-08-09 | 2014-04-08 | Intel Corporation | Multi-user resource allocation and medium access control (MAC) overhead reduction for mobile worldwide interoperability for microwave access (WiMAX) systems |
GB0716028D0 (en) * | 2007-08-16 | 2007-09-26 | Fujitsu Ltd | Communication systems |
US8537774B2 (en) * | 2007-08-16 | 2013-09-17 | Apple Inc. | Capacity optimisation in a cellular wireless network |
CN101374131B (zh) * | 2007-08-20 | 2013-01-30 | 株式会社Ntt都科摩 | 定时同步方法及装置、前导符号的生成方法和装置 |
US7801231B2 (en) | 2007-09-27 | 2010-09-21 | Intel Corporation | Preamble techniques for communications networks |
US20090086657A1 (en) * | 2007-10-01 | 2009-04-02 | Comsys Communication & Signal Processing Ltd. | Hybrid automatic repeat request buffer flushing mechanism |
CN101809919B (zh) * | 2007-10-01 | 2014-06-11 | 松下电器产业株式会社 | 接收装置和通信方法 |
US7894449B2 (en) * | 2007-10-03 | 2011-02-22 | Intel Corporation | Method and apparatus for encoding subscriber station identifications and connections in wireless communication networks |
EP2521295A3 (en) * | 2007-10-15 | 2013-10-23 | Thomson Licensing | High definition television transmission with mobile capability |
KR101452489B1 (ko) * | 2007-10-18 | 2014-10-21 | 엘지전자 주식회사 | 무선 통신 시스템에서 데이터 수신 방법 |
CN101170534B (zh) * | 2007-10-31 | 2010-06-23 | 中兴通讯股份有限公司 | 一种移动多媒体广播系统定时粗同步捕获方法 |
US8175022B2 (en) | 2007-12-19 | 2012-05-08 | Intel Corporation | Transmission of system configuration information in mobile WiMAX systems |
KR101387530B1 (ko) * | 2007-12-28 | 2014-04-21 | 엘지전자 주식회사 | 자동 재전송 요구를 위한 자원할당방법 |
US8265006B2 (en) | 2007-12-31 | 2012-09-11 | Intel Corporation | Synchronization channel (preamble) structure for mobile worldwide interoperability for microwave access (WiMAX) systems |
KR20090080723A (ko) * | 2008-01-22 | 2009-07-27 | 삼성전자주식회사 | 무선망 설계 장치 및 방법 |
WO2009099308A2 (en) * | 2008-02-05 | 2009-08-13 | Lg Electronics Inc. | Method for transmitting control information in wireless communication system |
WO2009130701A1 (en) * | 2008-04-22 | 2009-10-29 | Shiron Satellite Communications (1996) Ltd. | Method and apparatus for compensation for weather-based attenuation in a satellite link |
US8160125B2 (en) * | 2008-04-25 | 2012-04-17 | Samsung Electronics Co., Ltd. | System for feeding back index of codeword matrix |
US9549389B2 (en) * | 2008-05-07 | 2017-01-17 | Telefonaktiebolaget Lm Ericsson (Publ) | Methods and arrangements for paging a communication device |
US8483041B2 (en) * | 2008-06-12 | 2013-07-09 | Qualcomm Incorporated | Methods and systems for sticky region allocation in OFDMA communication systems |
US8526390B2 (en) * | 2008-06-12 | 2013-09-03 | Qualcomm Incorporated | Methods and systems for dynamic sticky region allocation in map-based communication systems |
US9112562B2 (en) * | 2008-09-02 | 2015-08-18 | Intel Corporation | Techniques utilizing adaptive codebooks for beamforming in wireless networks |
US8130728B1 (en) * | 2008-09-23 | 2012-03-06 | Clearwire Ip Holdings Llc | Dynamic transmission of DCD and UCD messages in a WiMAX network |
US8804658B2 (en) * | 2008-10-22 | 2014-08-12 | Mediatek Inc. | Method and apparatus for handover between IEEE 802.16e and 802.16m systems |
US8200165B2 (en) * | 2009-06-26 | 2012-06-12 | Hongmei Sun | Techniques for transmission of channel quality data in wireless systems |
US8737291B2 (en) * | 2008-12-23 | 2014-05-27 | Qualcomm Incorporated | Methods and systems for DL-MAP processing |
EP2382730B1 (en) * | 2008-12-31 | 2013-02-27 | Telecom Italia S.p.A. | Downlink transmission scheduling in multi-carrier networks |
US8301177B2 (en) | 2009-03-03 | 2012-10-30 | Intel Corporation | Efficient paging operation for femtocell deployment |
US8560696B2 (en) * | 2009-04-28 | 2013-10-15 | Intel Corporation | Transmission of advanced-MAP information elements in mobile networks |
US8379619B2 (en) * | 2009-11-06 | 2013-02-19 | Intel Corporation | Subcarrier permutation to achieve high frequency diversity of OFDMA systems |
US9185661B2 (en) * | 2012-06-04 | 2015-11-10 | Nokia Solutions And Networks Oy | Performing power control based on nominal packet size |
-
2009
- 2009-11-09 US US12/614,586 patent/US8301177B2/en active Active
- 2009-12-23 US US12/645,830 patent/US9037091B2/en not_active Expired - Fee Related
- 2009-12-23 US US12/646,284 patent/US8301148B2/en active Active
-
2010
- 2010-02-02 US US12/658,105 patent/US20100226357A1/en not_active Abandoned
- 2010-02-24 US US12/660,295 patent/US8351322B2/en active Active
- 2010-03-01 KR KR1020117020391A patent/KR101294460B1/ko not_active IP Right Cessation
- 2010-03-01 KR KR1020117019723A patent/KR20110110819A/ko not_active Application Discontinuation
- 2010-03-01 JP JP2011553003A patent/JP5596061B2/ja not_active Expired - Fee Related
- 2010-03-01 CN CN2010800107884A patent/CN102342038A/zh active Pending
- 2010-03-01 ES ES10749156.5T patent/ES2690658T3/es active Active
- 2010-03-01 WO PCT/US2010/025731 patent/WO2010101809A2/en active Application Filing
- 2010-03-01 KR KR1020117020640A patent/KR20110112876A/ko active Search and Examination
- 2010-03-01 EP EP10749147.4A patent/EP2404390A4/en not_active Withdrawn
- 2010-03-01 HU HUE10749156A patent/HUE040021T2/hu unknown
- 2010-03-01 JP JP2011552216A patent/JP5542159B2/ja not_active Expired - Fee Related
- 2010-03-01 WO PCT/US2010/025786 patent/WO2010101837A2/en active Application Filing
- 2010-03-01 WO PCT/US2010/025726 patent/WO2010101805A2/en active Application Filing
- 2010-03-01 BR BRPI1006754A patent/BRPI1006754A2/pt not_active IP Right Cessation
- 2010-03-01 CN CN2010800106453A patent/CN102342161A/zh active Pending
- 2010-03-01 CN CN201080009572.6A patent/CN102326336B/zh not_active Expired - Fee Related
- 2010-03-01 JP JP2011552224A patent/JP2012518974A/ja active Pending
- 2010-03-01 EP EP10749156.5A patent/EP2404471B1/en not_active Not-in-force
- 2010-03-01 EP EP10749145.8A patent/EP2404392A4/en not_active Withdrawn
- 2010-03-02 US US12/715,920 patent/US8634355B2/en not_active Expired - Fee Related
- 2010-03-03 WO PCT/US2010/026008 patent/WO2010101975A2/en active Application Filing
- 2010-03-03 KR KR1020117020431A patent/KR101264544B1/ko not_active IP Right Cessation
- 2010-03-03 KR KR1020117020456A patent/KR101183810B1/ko not_active IP Right Cessation
- 2010-03-03 CN CN201080010811.XA patent/CN102342074B/zh not_active Expired - Fee Related
- 2010-03-03 EP EP10749246.4A patent/EP2404422A4/en not_active Withdrawn
- 2010-03-03 WO PCT/US2010/026015 patent/WO2010101978A2/en active Application Filing
- 2010-03-03 CN CN2010800107920A patent/CN102342073A/zh active Pending
- 2010-03-03 JP JP2011551325A patent/JP2012518374A/ja active Pending
- 2010-03-03 EP EP10749248A patent/EP2404423A2/en not_active Withdrawn
- 2010-03-03 BR BRPI1012565A patent/BRPI1012565A2/pt not_active Application Discontinuation
- 2010-03-03 BR BRPI1009340A patent/BRPI1009340A2/pt not_active IP Right Cessation
-
2012
- 2012-05-21 HK HK12104946.3A patent/HK1164563A1/zh not_active IP Right Cessation
- 2012-07-30 US US13/561,992 patent/US8738002B2/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5272529A (en) * | 1992-03-20 | 1993-12-21 | Northwest Starscan Limited Partnership | Adaptive hierarchical subband vector quantization encoder |
CN1957546A (zh) * | 2004-06-25 | 2007-05-02 | 英特尔公司 | 具有量化的波束形成反馈的多输入多输出多载波通信系统及方法 |
CN101371483A (zh) * | 2006-02-09 | 2009-02-18 | 英特尔公司 | 利用极冠码本进行波束形成的mimo通信系统和方法 |
US20080232501A1 (en) * | 2007-03-20 | 2008-09-25 | Nec Laboratories America, Inc. | Static and differential precoding codebook for mimo systems |
Also Published As
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN102326336A (zh) | 用于无线网络的差分码本、利用它的mimo波束成形系统以及利用它减少用于无线网络的mimo波束成形系统中的量化误差的方法 | |
CN102130708B (zh) | 多小区信道状态信息的反馈方法和用户设备 | |
US8325841B2 (en) | Method for transmitting signals for reducing feedback overhead and method for transmitting feedback information for the same | |
CN101755392B (zh) | 用于对波束成型向量进行编码和解码的无线通信方法和设备 | |
CN100499395C (zh) | 在无线通信中用于多天线的空时发射分集(sttd) | |
US9088872B2 (en) | Hybrid codebook design for wireless systems | |
US8594161B2 (en) | Method and system for beamforming in a multiple user multiple input multiple output (MIMO) communication system using a codebook | |
US7957701B2 (en) | Closed-loop multiple-input-multiple-output scheme for wireless communication based on hierarchical feedback | |
CN101675599B (zh) | 产生用于多极化的多入多出系统的码书的码书产生方法和设备 | |
EP2586136B1 (en) | A method and device for obtaining precoding matrix | |
US8995503B2 (en) | Method and apparatus of selecting transmission/reception mode of plural transmission/reception pairs | |
CN1973473A (zh) | 利用用于反馈的码本的闭环mimo系统 | |
CN101485108A (zh) | 数据处理方法、数据传输方法、数据接收方法、设备、代码本、计算机程序产品以及计算机程序分发介质 | |
CN102640430A (zh) | 使用空分多用户多输入多输出(sd-mimo)通信方法的通信系统和方法 | |
US8391408B2 (en) | Method and apparatus for spatial mapping matrix searching | |
CN101860388A (zh) | 确定低复杂度的最佳整数扰动向量的装置和方法 | |
CN103607262B (zh) | 空时分组编码mimo系统中的两阶段预编码方法 | |
CN101888287B (zh) | 一种多输入多输出接收机信号检测方法及装置 | |
CN103493393B (zh) | 用于多输入多输出(mimo)的空间信道状态信息反馈的方法和系统 | |
CN101820405A (zh) | 多输入多输出合作通信方法、预编码装置和无线通信系统 | |
CN106301496A (zh) | 基于天线选择和预编码的空间调制系统 | |
CN102025460A (zh) | 多输入输出通信系统的传输模式切换的方法和装置 | |
CN101483467B (zh) | 多输入多输出多址信道吞吐量最大化的方法 | |
CN115549745B (zh) | Ris相移设计方法、装置、计算机设备及存储介质 | |
CN101621320A (zh) | 数据传输方法以及系统和终端 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into 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: 1164563 Country of ref document: HK |
|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
REG | Reference to a national code |
Ref country code: HK Ref legal event code: GR Ref document number: 1164563 Country of ref document: HK |
|
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141217 Termination date: 20180301 |
|
CF01 | Termination of patent right due to non-payment of annual fee |