CN1773885A - 在多天线宽带无线接入系统中支持各种多天线方案的方法 - Google Patents
在多天线宽带无线接入系统中支持各种多天线方案的方法 Download PDFInfo
- Publication number
- CN1773885A CN1773885A CNA2005101202891A CN200510120289A CN1773885A CN 1773885 A CN1773885 A CN 1773885A CN A2005101202891 A CNA2005101202891 A CN A2005101202891A CN 200510120289 A CN200510120289 A CN 200510120289A CN 1773885 A CN1773885 A CN 1773885A
- Authority
- CN
- China
- Prior art keywords
- mimo
- scheme
- encoder
- map message
- information
- 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
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
- H04L1/0618—Space-time coding
- H04L1/0625—Transmitter arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
-
- 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
- H04B7/0417—Feedback systems
-
- 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
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0621—Feedback content
- H04B7/0634—Antenna weights or vector/matrix coefficients
-
- 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
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0636—Feedback format
- H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
-
- 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
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0026—Transmission of channel quality indication
-
- 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
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
- H04B7/0689—Hybrid systems, i.e. switching and simultaneous transmission using different transmission schemes, at least one of them being a diversity transmission scheme
-
- 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
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0697—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using spatial multiplexing
-
- 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
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0028—Formatting
- H04L1/0029—Reduction of the amount of signalling, e.g. retention of useful signalling or differential signalling
-
- 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
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
- H04L1/0618—Space-time coding
- H04L1/0637—Properties of the code
- H04L1/0643—Properties of the code block codes
-
- 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
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
- H04L1/0618—Space-time coding
- H04L1/0637—Properties of the code
- H04L1/0662—Limited orthogonality systems
-
- 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
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
- H04L1/0618—Space-time coding
- H04L1/0637—Properties of the code
- H04L1/0668—Orthogonal systems, e.g. using Alamouti codes
-
- 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
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
- H04L1/0618—Space-time coding
- H04L1/0675—Space-time coding characterised by the signaling
- H04L1/0687—Full feedback
Abstract
公开一种用于在宽带无线接入系统中使用各种多天线方案的方法。根据该方法,构建一种下行链路MAP消息以便根据作为多天线方案之一的多输入所输出(MIMO)来支持各种多天线方案,使得可以实现与现有的不具有MIMO反馈的MIMO技术的兼容性并且可以减少在MAP信息单元的传输中存在的开销。而且,可以有效地支持在MIMO系统中传送多个具有不同调制的层的空间复用技术。
Description
技术领域
本发明涉及一种宽带无线接入(BWA)系统,更具体而言涉及一种用于在使用正交频分复用接入方案的系统中支持各种多天线方案的方法。
背景技术
在目前的无线移动通信系统中,正在对能够高速传送大量存储数据的高质量的多媒体服务进行广泛研究。与有线信道环境不同,无线信道环境受到实际传输信号的畸变的影响,所述实际传输信号的畸变是由于各种诸如多径干扰、阴影、波的衰减、时变噪声和干扰之类的因素而导致的。由于多径干扰而导致的衰落与反射物的移动性或用户终端密切相关。因此,实际的传输信号与干扰信号相混合并且接收混合信号。因为所接收的信号已经造成实际传输信号的严重畸变,所以移动通信系统的整体性能可能恶化。
衰落也可能使所接收的信号的幅度和相位发生畸变,并且可能成为妨碍无线信道环境中的高速数据通信的主要因素。因此,为了解决该衰落问题而正在进行广泛研究。为了在移动通信环境中高速传送数据,必须使由移动通信信道的特性而导致的损耗和用户干扰最小化。为了解决前述问题而建议的技术之一是多输入多输出(MIMO)技术。
MIMO技术可以根据所使用的数据传输方案和是否反馈信道信息来分类。
首先,根据数据传输方案可以将MIMO技术分成空间多路复用(SM)技术和空间分集(SD)技术。SM技术是一种借助于发射机和接收机中的多天线来同时传送不同数据、从而在不增加系统带宽的情况下以较高速率传送数据的技术。SD技术是一种通过多个发射(Tx)天线发射相同数据、从而实现发射分集(TD)的技术。
也可以将MIMO技术分成闭环方案和开环方案。在闭环方案中,信道信息从接收机被反馈至发射机,在开环方案中,没有将信道信息从接收机反馈至发射机。
参照电气和电子工程师协会802.16e标准的目前的标准文件802.16-REVd/D5、REVe/D5-2004DE,仅建议了一种用于通过使用开环方案来支持MIMO技术的方案。
发明内容
因此,为了解决至少现有技术中出现的上述问题而进行了本发明,并且本发明的目的在于提供一种用于在使用多天线的BWA系统中支持基于MIMO技术的各种多天线方案的方法。
本发明的另一个目的在于提供一种用于通过在使用多天线的BWA系统中构建用于对MIMO技术进行分类的MAP消息来支持各种多天线方案的方法。
本发明的另一个目的在于提供一种用于通过构建下行链路MAP消息来支持各种多天线方案的方法,所述下行链路MAP消息用于高效地提供从移动台反馈的多天线技术、预编码或天线分组技术、天线选择技术等。
为了实现上述的目的,根据本发明的一个方面,提供一种用于在采用MIMO方案的天线技术的宽带无线接入(BWA)系统中支持各种多输入多输出(MIMO)和预编码技术的方法,该方法包括:构建包括用于指示MIMO技术的基本信息字段和用于指示各种预编码技术的信息字段的下行链路MAP消息;和借助于下行链路MAP消息来将MIMO技术应用到移动台。
附图说明
结合附图,从以下详细描述中,本发明的以上和其他目的、特征和优点将更加清楚明白,其中:
图1是示出根据本发明的实施例的发射机的结构的方框图,该发射机包括单个编码器和单个调制器,能够借助于从在BWA系统中的移动台接收的反馈信息来执行预编码;
图2是示出根据本发明的另一实施例的发射机的结构的方框图,该发射机包括多个编码器和调制器,能够借助于从在BWA系统中的移动台接收的反馈信息来执行预编码;和
图3是示出根据本发明的实施例的根据层和流的数目的可用技术的图解。
具体实施方式
以下,将参照附图来描述根据本发明的优选实施例。在以下的描述中,示出许多特定的内容,例如详细的元件,但是提供这些是用于帮助全面理解本发明的,并且本领域的技术人员很清楚:在本发明的范围内,可以修改和改变这些特定内容。
本发明提供一种用于在使用多天线的宽带无线接入(BWA)通信系统中使用各种多输入多输出(MIMO)方案的方法。具体而言,为了在BWA通信系统中使用闭环MIMO方案,本发明提出新的下行链路(DL)-MAP消息。新的DL-MAP消息提供一种用于选择对应于由调制器的数目所决定的层数和从空间时间编码(STC)编码器输出的流的数目Mt二者的传输矩阵的方法。STC编码器可以由串行-并行(S/P)转换器来实现。传输矩阵已经由IEEE 802.16标准、根据发射分集方案、垂直编码方案和水平编码方案而定义。
当将使用新DL-MAP消息的MIMO技术应用到BWA通信系统时,可以使使用从移动台即接收机反馈的信道质量信息(CQI)的闭环MIMO技术与现有的不具有CQI的反馈的开环MIMO技术相兼容。当使用闭环MIMO技术时,可以执行预编码。
图1是示出根据本发明的实施例的发射机的结构的方框图,该发射机包括单个编码器和单个调制器,能够借助于从在BWA系统中的移动台接收的反馈信息来执行预编码。
参照图1,发射机包括:编码器102,用于对要发送的数据101进行编码;调制器103,用于将所编码的数据映射到复平面上;STC编码器104,用于对所调制的数据应用基本MIMO技术;和预编码块105,用于对从STC编码器104接收的Mt数目的流进行预编码。预编码块105通过使用从移动台反馈的CQI来应用MIMO技术。而且,发射机包括:子载波映射器(mapper)106,用于映射从预编码块105接收的码元;和逆快速傅立叶变换(IFFT)单元107,用于将所映射的码元转换成正交频分多址(OFDMA)码元。
因为如上所述发射机包括一个编码器102和一个调制器103,所以层数为1(L=1)并且STC编码器104输出Mt数目的流。这里用于使得Mt数目的流获取对公共传输信号的分集增益的MIMO技术对应于发射分集技术。而且,用于考虑到数据率而使得Mt数目的流获取对两个或多个分离的传输信号的增益的MIMO技术被称为垂直编码(VE)空间复用(SM)技术。
预编码块105接收Mt数目的流,并进行Mt×Nt矩阵运算。Nt表示发射天线的数目。
具有上述结构的发射机接收信道反馈信息并产生预编码块105的矩阵值,从而通过应用诸如反馈预编码(例如,SVD预编码、波速形成预编码等)、天线分组预编码和天线选择预编码之类的各种MIMO算法来工作。
STC编码器104接收一个输入序列以便产生Mt数目的流。当应用波速形成预编码技术时,STC编码器104可以输出Mt数目的流而无需执行STC编码。
图2是示出根据本发明的另一实施例的发射机的结构的方框图,该发射机包括多个编码器和调制器,能够借助于从在BWA系统中的移动台接收的反馈信息来执行预编码。
参照图2,发射机包括多个编码器202a至202n和调制器203a至203n。因为已经参照图1描述了编码器和调制器的功能,所以将省略进一步的详细描述。
这里,应用到具有多个层的发射机的MIMO传输技术被称为水平编码(HE)空间复用技术。
STC编码器204接收L数目的输入序列以便产生Mt数目的流。当应用波速形成预编码技术时,STC编码器204可以输出Mt数目的流而无需执行STC编码。
图3示出是根据本发明的实施例的应用根据在BWA通信系统中的层和流的数目的传输矩阵的图解。
参照图3,A、B和C表示传输矩阵。在图3中,STC编码器104和204中的每个根据层和流的数目来选择一个传输矩阵,从而执行STC编码。在传输矩阵中,行下标与天线的数目一致并且列下标与OFDMA码元时间一致。
下面的方程1和2表示当Mt为2时的发射分集和空间复用的STC编码器104和204的顺序输入的码元矩阵。
下面的方程3至5表示Mt为3时的发射分集、发射分集和空间复用的混合以及空间复用的STC编码器104和204的顺序输入的码元矩阵。
下面的方程6至8表示Mt为4时的发射分集、发射分集和空间复用的混合以及空间复用的STC编码器104和204的顺序输入的码元矩阵。
以下的表1到3表示根据本发明的实施例的为了在BWA系统中有效地提供所有基于MIMO的技术而作为一个示例提出的MIMO_Compact_DL-MAP消息的数据格式。
表1
语法 | 大小(bits) | 注释 |
MIMO_Compact_DL-MAP_IE(){ | ||
Compact_DL-MAP type | 3 | 类型=7 |
DL-MAP type | 5 | MIMO=0x01 |
Length | 4 | 在字节中IE的长度 |
MIMO_type | 2 | MIMO模式类型00=开环01=天线分组10=天线选择11=闭环预编码 |
Num_layer | 2 | 多个编码/调制层的数目00=1层01=2层10=3层11=4层 |
Mt | 2 | 指示STC输出流的数目00=1流01=2个流10=3个流11=4个流 |
以下的表2表示表1之后的消息字段。
表2
Mode_Changeif(Mode_Change==1){ | 1 | 指示MIMO模式的改变0=依先前的分配没有改变1=MIMO模式改变 |
if(MIMO_Type==00 or 11){ | ||
if(MIMO_Type==11){ | ||
Precoding Index} | 6 | 指示预编码矩阵的标志(index)Sec8.4.8.3.6 |
Matrix Indicator}if(MIMO_Type==01){ | 2 | 指示开环矩阵(Sec8.4.8.3)00=矩阵A(发射分集)01=矩阵B(只用于3个和4个天线的混合方案分配)10=矩阵C(纯空间复用)11=保留 |
Antenna GroupingIndex } | 4 | 指示天线分组的标志Sec 8.4.8.3.4 and 8.4.8.3.5 |
If(MIMO_Type==10){ | ||
Antenna Selection Index} | 4 | 指示天线选择的标志Sec 8.4.8.3.4 and 8.4.8.3.5 |
} | ||
for(j=1:j<Num_layer;++){ | 此循环指定STC所需的两层或两层以上的Nep。应用于每层的相同的Nsch and RCID | |
If(H-ARQ Mode=CTCIncremental Redundancy){Nep}clsief(H-ARQ Mode=GenericChase)} | 4 | 以Swi tch H-ARQ模式的H-ARQCompac t_DL-MAP IE格式规定H-ARQ模式 |
DIUC} | ||
if(CQICH indicator==1){ | CQICH指示符来自预编码的Compact DL-MAP IE | |
Allocation Index } | 6 | 分配给此层的CQICH的标志,对于多层MIMO传输,此CQICH和预编码的CompactDL-MAP IE的反馈类型应为000. |
} |
以下的表3表示表2之后的消息字段。
表3
CQICH_Num | 2 | 分配给此SS的CQICH的总数为(CQICH_Num+1)00=1 CQICH01=2 CQICH10=3 CQICH11=4 CQICH |
for(j=1;j<CQICH_NUM;j++){ | ||
CQI Feedback type | 3 | 此SS的CQICH上的内容类型000=快速D1测量/默认反馈001=预编码权重矩阵信息010=信道矩阵H011=自适应速率控制信息100=天线选择标志101-111=保留 |
Period(p) | 2 | 在帧中附加的(CQICH_Num)CQI信道的周期 |
for(i=0;i<CQICH_Num;i++){ | ||
Allocation index | 5 | 唯一地标识分配给SS的附加CQICH资源的标志 |
} | ||
} | ||
Padding | 可变的 | 补丁比特用来确保IE的大小为整数字节 |
} |
在表1中,用于提供基于MIMO的控制信息的MAP信息单元的初始8个比特表示3比特的MAP信息单元的类型和5比特的子类型,并且4比特的长度字段表示基于MIMO的控制信息的长度,其位于下一字段中。
将描述控制信息的结构。2比特的字段‘MIMO type’表示MIMO模式。就是说,当字段‘MIMO type’具有值‘00’时,其指示开环MIMO模式。当字段‘MIMO type’具有值‘01’时,其指示天线分组MIMO模式。当字段‘MIMO type’具有值‘10’时,其指示天线选择MIMO模式。当字段‘MIMO type’具有值‘11’时,其指示在其中执行闭环预编码的MIMO模式。
字段‘Num-layer’是用于指示层数的字段,所述层数是输入到STC编码器的信号分支的数目。
字段‘Mt’是用于指示从STC编码器输出的流的数目的字段。发射机通过使用字段‘Num-layer’和字段‘Mt’的值来确定由图3中的A、B和C表示的传输矩阵。例如,当字段‘Num-layer’具有值‘10’并且字段‘Mt’具有值‘10’时,STC编码器通过使用水平编码传输矩阵C来执行STC编码。
字段‘Mode Change’是用于指示MIMO模式是否已经改变的字段。例如,当‘Mode Change’具有值‘1’时,其意味着使用不同于先前的MIMO模式的MIMO模式。然而,当‘Mode Change’具有值‘0’时,其意味着当前的MIMO模式与先前的MIMO模式相同。在此情况下,因为没有已改变的信息,所以没有必要包括先前的MIMO类型信息。因此,可以减小Compact_DL-MAP消息的大小。
当表1中的字段‘MIMO type’被指定为‘00’或‘11’时,其指示在开环中使用的矩阵标志或在闭环中使用的预编码矩阵标志。
以下的表4或表3表示根据层数L和流数Mt的可用的组合。而且,当‘MIMO type’具有值‘11’(从闭环MIMO类型中向其指定反馈预编码技术)时,其通过针对反馈预编码的6比特标志来指示相应的反馈预编码矩阵而同时使用STC编码器。这里,反馈预编码矩阵可以具有Mt(流的数目)×Nt(发射天线的数目)的大小和最多64个不同矩阵,并且反馈预编码矩阵可以具有取决于生成算法的值、层数、流数和发射天线的数目。
矩阵指示符此字段指示用于突发的MIMO矩阵。 | if(Num_layer=1){if(Mt=1){SISO or AAS mode}elseif(Mt=2){00=A(TD);01=C(VE);1011=Reserved}elseif(Mt=3){00=A(TD);01=B(VE);10=C(VE)11=Reserved}elseif(Mt=4){00=A(TD);01=B(VE);10=C(VE)11=Reserved}}else if(Num_layer=2){if(Mt=2){00=C(HE);01 11=Reserved}elseif(Mt=3){00=B(HE);0111=Reserved}elseif(Mt=4){00=B(HE);0111=Reserved}}elseif(Num_layer=3){if(Mt=3){00=C(HE);0111=Reserved}}elseif(Num_layer=4){if(Mt=4){00=C(HE);0111=Reserved}} |
当表1中的‘MIMO type’具有值‘01’并且指定了天线分组技术时,其可以通过表2中的4比特的天线分组标志来指示天线预编码矩阵。
以下的表5表示矩阵组合,其可以由表2中的4比特的天线分组标志来指示。这里,由表1中的层数和流数Mt来确定在图3中要首先应用的MIMO技术,并且由以下的表5表示的字段‘4比特的天线分组标志’来确定要最后应用的MIMO技术。
如上所述,可以由单个字段‘4比特的天线分组标志’来确定要被STC编码器104和204应用的STC编码技术,并且可以类似地知道预编码块105和205的矩阵值。因此,可以有效地减少控制信息消息的开销。
表5
天线分组标志 |
此字段指示用于当前突发的天线分组标志。 |
if(Num_layer=1){if(Mt=3){0000=A1;0001=A2;0010=A3;0011=B1(VE);0100=B2(VE);0101=B3(VE);0110-1111=Reserved}elseif(Mt=4){0000=A1;0001=A2;0010=A3;0011=B1(VE);0100=B2(VE);0101=B3(VE);0110=B4(VE);0111=B5(VE);1000=B6(VE);1001-1111=Reserved}}elseif(Num_layer=2){if(Mt=3){0000=B1(HE);0001=B2(HE);0010=B3(HE);0011-1111=Reserved}elseif(Mt=4){0000=B1(HE);0001=B2(HE);0010=B3(HE);0011=B4(HE);0100=B5(HE);0101=B6(HE);0110-1111=Reserved} |
当表1中的‘MIMO type’具有值‘10’并且指定了天线选择技术时,其可以通过表2中的字段‘4比特的天线选择标志’来指示预编码矩阵。这指示通过执行与用于天线分组标志的操作相同的操作而选择的天线。
包括表2中的Nep或下行链路间隔使用代码(Downlink Interval UsageCode,DIUC)的字段通过4比特的值,来指示用于对应于层数的编码器和调制器组的编码速率和调制方案。就是说,当存在多个层时,在混合自动请求(H-ARQ)补充信息重发(即,增量冗余)模式中该字段通过Nep方案来指示编码速率和调制方案。而且,当至少一层包括移动台中的错误时,产生非应答(NACK)并且重发针对所有层的数据而言的用于编码增益增加的组合数据。而且,当指定了信道质量标志信道(CQICH)时,最后的字段指示CQICH信道分配信息以便在每层上加载单个CQI反馈信息。因为如上所述每层使用不同的编码和调制方案,所以每层都需要CQI反馈信息。
表3示出这样的字段,即移动台必须参照该字段以便在具有多天线或多个层的结构中反馈该CQI。表示反馈信道的数目的字段‘CQICH-NUM’表示要由移动台同时发射的反馈信道的数目。指示要从每个反馈信道发送的反馈信息的类型的字段‘CQI Feedback type’使移动台能够根据每个所分配的反馈信道来发送不同的反馈信息。这使移动台能够发送基站所需的各种反馈信息,从而更有效地运用MIMO技术。
如上所述,发射机,即基站,通过考虑从接收机,即移动台,反馈的信息来从多个传输矩阵中确定至少一个矩阵,从而借助于所确定的矩阵来执行STC编码或预编码,并且通过本发明新提出的MIMO Compact DL-MAP消息来向移动台发送针对所确定的矩阵的信息。这里,移动台可以参照从基站发送的针对层值和Mt值的信息来了解针对矩阵的信息。因此,在已经识别了如图3所述的信息的同时,移动台可以通过使用对应于针对层值和Mt值的信息的传输矩阵来执行解码。
根据上述的本发明,在BWA系统中通过下行链路MAP消息只使用少量数据就可以有效地告知移动台MIMO的各种基本技术和各种MIMO预编码技术,从而提高BWA系统的性能并增加其蜂窝容量。
尽管参照本发明的特定优选实施例已经示出和描述了本发明,本领域的技术人员应该明白:在不偏离由所附权利要求所限定的本发明的精神和范围的情况下,可以在形式和细节上对本发明进行各种改变。
Claims (15)
1.一种用于在采用多输入多输出(MIMO)方案的天线技术的宽带无线接入(BWA)系统中支持各种MIMO和预编码技术的方法,该方法包括:
配置下行链路MAP消息,所述下行链路MAP消息包括用于指示MIMO技术的信息字段和用于指示各种预编码技术的信息字段;以及
借助于下行链路MAP消息来将MIMO技术应用到移动台。
2.根据权利要求1所述的方法,其中下行链路MAP消息包括表示根据层的编码和调制信息的字段和针对信道质量信息(CQI)分配的字段列表信息。
3.根据权利要求2所述的方法,其中下行链路MAP消息包括表示从空间时间编码(STC)编码器输出的多个流的字段,并且在表示编码和调制信息的字段中指示可以应用的MIMO技术。
4.根据权利要求3所述的方法,其中下行链路MAP消息包括用于指示可支持的模式是否已经改变的字段,并且通过包括在表示编码和调制信息的字段中的多个层、流的数目和基本信息字段的值来指示STC编码器的类型。
5.根据权利要求1所述的方法,其中应用MIMO技术的步骤包括以下子步骤:
当包括在下行链路MAP消息中的用于指示各种预编码技术的信息字段被指定为天线分组预编码技术时,根据在下行链路MAP消息中所指定的多个层和多个流来确定要应用的MIMO技术;
通过在下行链路MAP消息中所指定的天线分组标志字段来确定要应用的MIMO技术;以及
应用所确定的MIMO技术。
6.一种用于由在使用多输入多输出(MIMO)方案的宽带无线接入(BWA)通信系统中的基站来支持多天线的方法,该方法包括:
从移动台接收CQI;
根据CQI确定MIMO方案;
根据所确定的MIMO方案来编码数据;以及
配置包括所编码的数据和用于编码的信息的下行链路MAP消息,并且发送该下行链路MAP消息。
7.根据权利要求6所述的方法,其中,在基站的发射机中MIMO方案根据对应于多个调制器的多个层和从编码器输出的多个调制流来确定传输矩阵。
8.根据权利要求6所述的方法,其中编码包括发射分集方案、垂直编码方案和水平编码方案之一。
9.根据权利要求6所述的方法,其中在基站的发射机中用于编码的信息包括用来限定对应于多个调制器的多个层和从编码器输出的多个调制流的信息,并且向移动台发送用来指示由层和调制流的数目确定的传输矩阵的下行链路MAP消息。
10.根据权利要求6所述的方法,其中在基站的发射机中用于编码的信息包括用来限定对应于多个调制器的多个层和从编码器输出的多个调制流的信息,并且向移动台发送用来指示由层和调制流的数目确定的天线分组/选择标志信息的下行链路MAP消息。
11.一种用于在使用多输入多输出(MIMO)方案的宽带无线接入(BWA)通信系统中应用MIMO方案的基站设备,该设备包括:
第一编码器,用于编码数据;
调制器,用于将从第一编码器输出的已编码的数据映射到复平面上;
第二编码器,用于对已调制的数据应用MIMO方案;和
预编码块,用于从第二编码器接收调制流并且对所接收的调制流进行预编码。
12.根据权利要求11所述的设备,其中第二编码器包括用于进行空间时间编码的空间时间编码(STC)编码器。
13.根据权利要求11所述的设备,其中预编码块当接收到从移动台反馈的信道质量信息(CQI)时工作。
14.根据权利要求11所述的设备,其中在基站的发射机中MIMO方案根据对应于多个调制器的多个层和从第二编码器输出的多个调制流来确定传输矩阵。
15.根据权利要求11所述的设备,其中第二编码器使用发射分集方案、垂直编码方案和水平编码方案之一。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020040091120A KR100909539B1 (ko) | 2004-11-09 | 2004-11-09 | 다중 안테나를 사용하는 광대역 무선 접속 시스템에서 다양한 다중안테나 기술을 지원하기 위한 장치 및 방법 |
KR91120/04 | 2004-11-09 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1773885A true CN1773885A (zh) | 2006-05-17 |
CN100583679C CN100583679C (zh) | 2010-01-20 |
Family
ID=35695803
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN200510120289A Active CN100583679C (zh) | 2004-11-09 | 2005-11-09 | 在多天线宽带无线接入系统中支持各种多天线方案的方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7660607B2 (zh) |
EP (1) | EP1655871B1 (zh) |
JP (1) | JP4509912B2 (zh) |
KR (1) | KR100909539B1 (zh) |
CN (1) | CN100583679C (zh) |
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008037179A1 (fr) * | 2006-09-28 | 2008-04-03 | Zte Corporation | Procédé pour commander un mode à antennes multiples sur la base d'un point d'accès |
WO2008037180A1 (fr) * | 2006-09-28 | 2008-04-03 | Zte Corporation | Procédé de commande de modes à antennes mutliples fondé sur une station |
CN101291163A (zh) * | 2007-04-17 | 2008-10-22 | 大唐移动通信设备有限公司 | 时分双工系统中进行预编码的方法、系统及装置 |
WO2008138164A1 (fr) * | 2007-05-10 | 2008-11-20 | Alcatel Shanghai Bell Company, Ltd. | Procédé pour programmer les transmissions de liaison montante d'un système de communication sans fil et dispositif associé |
CN101911525A (zh) * | 2008-01-14 | 2010-12-08 | 爱立信电话股份有限公司 | Mimo通信中的开环预编码器循环 |
WO2011020214A1 (zh) * | 2009-08-18 | 2011-02-24 | 上海贝尔股份有限公司 | 协同多点传输方法及其设备 |
WO2011029400A1 (zh) * | 2009-09-09 | 2011-03-17 | 华为技术有限公司 | 协作通信的方法及基站 |
CN101540658B (zh) * | 2008-03-18 | 2012-11-28 | 中兴通讯股份有限公司 | 下行预编码指示方法 |
CN101534527B (zh) * | 2008-03-13 | 2013-03-20 | 中兴通讯股份有限公司 | 下行预编码信息指示方法 |
CN101499833B (zh) * | 2008-01-30 | 2013-12-18 | 富士通株式会社 | 多输入多输出通信系统和发送站 |
US8699587B2 (en) | 2006-08-18 | 2014-04-15 | Qualcomm Incorporated | Feedback of precoding control indication (PCI) and channel quality indication (CQI) in a wireless communication system |
CN102362442B (zh) * | 2009-02-02 | 2014-08-27 | 高通股份有限公司 | 无线通信环境中的天线虚拟化的方法和无线通信装置 |
CN104158574A (zh) * | 2009-08-14 | 2014-11-19 | Lg电子株式会社 | 在支持多天线的无线通信系统中传输下行链路基准信号的方法及装置 |
CN105634573A (zh) * | 2007-04-20 | 2016-06-01 | 交互数字技术公司 | e节点B、WTRU及网络实体 |
CN107733492A (zh) * | 2016-08-10 | 2018-02-23 | 华为技术有限公司 | 数据发送、接收方法和装置 |
US10560162B2 (en) | 2016-03-10 | 2020-02-11 | Huawei Technologies Co., Ltd. | Transmit diversity method, device, and system |
USRE48016E1 (en) | 2009-08-14 | 2020-05-26 | Lg Electronics Inc. | Method and apparatus for transmitting downlink reference signal in wireless communication system that supports multiple antennas |
CN111226424A (zh) * | 2017-10-20 | 2020-06-02 | 高通股份有限公司 | 多层调制流 |
US10735080B2 (en) | 2016-08-10 | 2020-08-04 | Huawei Technologies Co., Ltd. | Transmission scheme indication method, and data transmission method, apparatus, and system |
Families Citing this family (85)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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) |
US10749582B2 (en) | 2004-04-02 | 2020-08-18 | Rearden, Llc | Systems and methods to coordinate transmissions in distributed wireless systems via user clustering |
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 |
US10886979B2 (en) | 2004-04-02 | 2021-01-05 | Rearden, Llc | System and method for link adaptation in DIDO 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 |
US11394436B2 (en) | 2004-04-02 | 2022-07-19 | 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 |
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 |
US10425134B2 (en) | 2004-04-02 | 2019-09-24 | Rearden, Llc | System and methods for planned evolution and obsolescence of multiuser spectrum |
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 |
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 |
US11451275B2 (en) | 2004-04-02 | 2022-09-20 | Rearden, Llc | System and method for distributed antenna wireless communications |
US8542763B2 (en) | 2004-04-02 | 2013-09-24 | Rearden, Llc | Systems and methods to coordinate transmissions in distributed wireless systems via user clustering |
US9685997B2 (en) | 2007-08-20 | 2017-06-20 | Rearden, Llc | Systems and methods to enhance spatial diversity in distributed-input distributed-output wireless systems |
KR20060028989A (ko) * | 2004-09-30 | 2006-04-04 | 엘지전자 주식회사 | 다중입출력 시스템에 적용되는 신호 처리 방법 |
KR101100209B1 (ko) * | 2005-12-27 | 2011-12-28 | 엘지전자 주식회사 | 다수의 반송파를 이용하여 데이터를 전송하는 장치 및 방법 |
KR100934657B1 (ko) | 2006-05-26 | 2009-12-31 | 엘지전자 주식회사 | 위상천이 기반 프리코딩 방법 및 이를 지원하는 송수신장치 |
KR20070113967A (ko) * | 2006-05-26 | 2007-11-29 | 엘지전자 주식회사 | 위상천이 기반의 프리코딩 방법 및 이를 지원하는 송수신기 |
TWI343200B (en) * | 2006-05-26 | 2011-06-01 | Lg Electronics Inc | Method and apparatus for signal generation using phase-shift based pre-coding |
KR101009774B1 (ko) * | 2006-07-11 | 2011-01-19 | 더 유니버시티 코트 오브 더 유니버시티 오브 에딘버그 | 다중입출력 시스템에서 공간 변조 방법 및 그를 이용한 송수신 장치 |
KR100749819B1 (ko) * | 2006-07-28 | 2007-08-17 | 한국전자통신연구원 | 폐루프 다중 안테나를 이용한 직교 주파수 분할 다중화시스템에서 채널변화율에 따라 부반송파를 보간하는 방법 |
CN101127747B (zh) * | 2006-08-14 | 2010-09-08 | 大唐移动通信设备有限公司 | 一种时分双工复用系统中实现频域调度的方法及系统 |
US7944985B2 (en) * | 2006-08-24 | 2011-05-17 | Interdigital Technology Corporation | MIMO transmitter and receiver for supporting downlink communication of single channel codewords |
US7961810B2 (en) | 2006-09-07 | 2011-06-14 | Texas Instruments Incorporated | Antenna grouping and group-based enhancements for MIMO systems |
WO2008032358A1 (fr) * | 2006-09-11 | 2008-03-20 | Fujitsu Limited | Appareil de communication radio et procédé de communication radio |
KR20080026019A (ko) * | 2006-09-19 | 2008-03-24 | 엘지전자 주식회사 | 위상천이 기반의 프리코딩 방법 및 이를 지원하는 송수신기 |
KR20080026010A (ko) * | 2006-09-19 | 2008-03-24 | 엘지전자 주식회사 | 위상천이 기반의 프리코딩을 이용한 데이터 전송 방법 및이를 구현하는 송수신 장치 |
US8457231B2 (en) * | 2006-10-24 | 2013-06-04 | Intel Corporation | Quasi-orthogonal space-time block encoder, decoder and methods for space-time encoding and decoding orthogonal frequency division multiplexed signals in a multiple-input multiple-output system |
US20080101494A1 (en) * | 2006-10-31 | 2008-05-01 | Freescale Semiconductor, Inc. | System and method for generating MIMO signals |
KR101356508B1 (ko) * | 2006-11-06 | 2014-01-29 | 엘지전자 주식회사 | 무선 통신 시스템에서의 데이터 전송 방법 |
US8825099B2 (en) * | 2007-01-09 | 2014-09-02 | Qualcomm Incorporated | CQI reporting for MIMO transmission in a wireless communication system |
ES2703580T3 (es) | 2007-01-12 | 2019-03-11 | Ericsson Telefon Ab L M | Método y disposición en un sistema de comunicaciones inalámbrico |
KR101328281B1 (ko) | 2007-01-12 | 2013-11-14 | 삼성전자주식회사 | 다중 안테나 이용하는 이동 통신 시스템에서의 제어채널운용 방법 및 장치 |
KR100930047B1 (ko) * | 2007-01-12 | 2009-12-08 | 삼성전자주식회사 | 다중 채널 무선통신 시스템에서 동적 채널 할당 장치 및방법 |
US8223734B2 (en) * | 2007-02-14 | 2012-07-17 | Samsung Electronics Co., Ltd. | Apparatus and method for transmitting and receiving forward shared control channel in a mobile communication system |
KR20080076683A (ko) * | 2007-02-14 | 2008-08-20 | 엘지전자 주식회사 | 위상천이 기반의 프리코딩 방법 및 이를 지원하는 송수신기 |
TW200901655A (en) * | 2007-03-21 | 2009-01-01 | Interdigital Tech Corp | Method and apparatus for communicating precoding or beamforming information to users in MIMO wireless communication systems |
US8687561B2 (en) | 2007-05-04 | 2014-04-01 | Motorola Mobility Llc | Method and system for link adaptation using metric feedback |
DE602008017325C5 (de) | 2007-06-08 | 2022-05-12 | MiiCs & Partners Japan Co., Ltd. | Mobiles Kommunikationssystem, Basisstationsvorrichtung und Mobilstationsvorrichtung |
US8160177B2 (en) | 2007-06-25 | 2012-04-17 | Samsung Electronics Co., Ltd. | Transmit methods with delay diversity and space-frequency diversity |
EP2165450B1 (en) * | 2007-06-27 | 2019-11-06 | Unwired Planet International Limited | Method and arrangement for improved radio resource allocation in a mimo system |
KR101403134B1 (ko) * | 2007-07-13 | 2014-06-03 | 엘지전자 주식회사 | 다중안테나 시스템에서 다중사용자 데이터 전송 방법 |
KR100935187B1 (ko) * | 2007-07-20 | 2010-01-06 | 포스데이타 주식회사 | 무선 통신 시스템에서 하향링크 프레임 송수신 장치 및방법 |
KR101455981B1 (ko) | 2007-08-14 | 2014-11-03 | 엘지전자 주식회사 | 하향링크 상황에 따른 적응적 채널 품질 지시자 생성 방법및 이를 위한 사용자 기기 |
CA3025857C (en) * | 2007-08-20 | 2022-10-18 | Rearden, Llc | System and method for distributed input distributed output wireless communications |
US9048945B2 (en) * | 2007-08-31 | 2015-06-02 | Intel Corporation | Antenna training and tracking protocol |
ES2400110T3 (es) * | 2007-09-06 | 2013-04-05 | Sharp Kabushiki Kaisha | Aparato de comunicación y método de comunicación |
KR101531416B1 (ko) * | 2007-09-13 | 2015-06-24 | 옵티스 셀룰러 테크놀로지, 엘엘씨 | 상향링크 신호 전송 방법 |
KR20090030200A (ko) | 2007-09-19 | 2009-03-24 | 엘지전자 주식회사 | 위상천이 기반의 프리코딩을 이용한 데이터 송수신 방법 및이를 지원하는 송수신기 |
KR101482262B1 (ko) | 2007-10-18 | 2015-01-13 | 엘지전자 주식회사 | 무선 통신 시스템에서 피드백 메시지 전송 방법 |
KR101452489B1 (ko) * | 2007-10-18 | 2014-10-21 | 엘지전자 주식회사 | 무선 통신 시스템에서 데이터 수신 방법 |
CN101207590B (zh) * | 2007-12-07 | 2011-05-11 | 华中科技大学 | 一种多输入多输出(mimo)传输方法及系统 |
KR101516818B1 (ko) * | 2008-01-25 | 2015-05-04 | 삼성전자주식회사 | 통신 시스템에서 맵 송수신 장치 및 방법 |
US8233559B2 (en) * | 2008-03-12 | 2012-07-31 | Lg Electronics Inc. | Method and apparatus for transmitting a pilot in multi-antenna system |
WO2009157513A1 (ja) | 2008-06-27 | 2009-12-30 | 京セラ株式会社 | 無線通信装置および無線通信方法 |
WO2010002319A2 (en) * | 2008-07-03 | 2010-01-07 | Telefonaktiebolaget L M Ericsson (Publ) | Methods and arrangements in a wireless communication system |
EP2151941A1 (en) | 2008-08-05 | 2010-02-10 | Nokia Siemens Networks OY | Communication network element and method transmitting data |
US20100034310A1 (en) * | 2008-08-08 | 2010-02-11 | Samsung Electronics Co., Ltd. | Transmit diversity schemes in OFDM systems |
KR20100019948A (ko) * | 2008-08-11 | 2010-02-19 | 엘지전자 주식회사 | 공간 다중화 기법을 이용한 데이터 전송방법 |
KR101599528B1 (ko) * | 2008-12-17 | 2016-03-03 | 엘지전자 주식회사 | 셀룰러 시스템에 있어서, mimo 모드를 포함하는 자원할당 제어 정보를 제공하는 방법 |
KR101505118B1 (ko) * | 2008-12-31 | 2015-03-24 | 서울대학교산학협력단 | 다중사용자 mimo 시스템에서 사용자 선택 장치 및 방법 |
KR101356518B1 (ko) * | 2009-04-30 | 2014-02-14 | 엘지전자 주식회사 | 개루프 다중 안테나 시스템에서 프리코더를 설정하는 방법 |
WO2010126317A2 (en) * | 2009-04-30 | 2010-11-04 | Lg Electronics Inc. | Method for setting precoder in open loop mimo system |
KR101591403B1 (ko) * | 2009-04-30 | 2016-02-03 | 인텔렉추얼디스커버리 주식회사 | 프리코딩 행렬 결정 방법 및 장치 |
KR101638905B1 (ko) * | 2009-06-01 | 2016-07-22 | 엘지전자 주식회사 | 개루프 다중 입출력 시스템에 있어서, 프리코딩 행렬을 적용하여 데이터를 전송하는 방법 |
US20110053627A1 (en) * | 2009-08-28 | 2011-03-03 | Samsung Electronics Co., Ltd. | System and method for efficient indication of distributed sub-band resources |
US8768397B2 (en) | 2009-10-02 | 2014-07-01 | Sharp Kabushiki Kaisha | Transmission power control on a wireless communication device for a plurality of regulated bands or component carriers |
US9059749B2 (en) | 2009-10-02 | 2015-06-16 | Sharp Kabushiki Kaisha | Antenna port mode and transmission mode transitions |
CN101720122B (zh) * | 2009-12-28 | 2015-05-20 | 中兴通讯股份有限公司 | 一种物理上行控制信道的功率控制方法及基站和终端 |
EP2701325B1 (en) | 2011-04-19 | 2020-12-09 | Sun Patent Trust | Signal generating method and signal generating device |
AU2013306572B2 (en) * | 2012-08-21 | 2015-04-16 | Lg Electronics Inc. | Method and device for transmitting channel state information in wireless communication system |
US11189917B2 (en) | 2014-04-16 | 2021-11-30 | Rearden, Llc | Systems and methods for distributing radioheads |
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 |
US11050468B2 (en) | 2014-04-16 | 2021-06-29 | Rearden, Llc | Systems and methods for mitigating interference within actively used spectrum |
US11190947B2 (en) | 2014-04-16 | 2021-11-30 | Rearden, Llc | Systems and methods for concurrent spectrum usage within actively used spectrum |
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 |
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 |
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 |
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 |
KR102202935B1 (ko) | 2013-06-21 | 2021-01-14 | 삼성전자 주식회사 | 대규모 다중 안테나 무선통신 시스템에서 에너지 효율적인 신호 전송 방법 및 장치 |
US11290162B2 (en) | 2014-04-16 | 2022-03-29 | Rearden, Llc | Systems and methods for mitigating interference within actively used spectrum |
CN109450505B (zh) * | 2016-05-13 | 2019-11-15 | 华为技术有限公司 | 一种信道信息发送方法、数据发送方法和设备 |
Family Cites Families (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6922445B1 (en) * | 1999-12-15 | 2005-07-26 | Intel Corporation | Method and system for mode adaptation in wireless communication |
AU2000238190A1 (en) * | 2000-04-07 | 2001-10-23 | Nokia Corporation | Multi-antenna transmission method and system |
US6567387B1 (en) * | 2000-11-07 | 2003-05-20 | Intel Corporation | System and method for data transmission from multiple wireless base transceiver stations to a subscriber unit |
ATE387759T1 (de) * | 2001-04-25 | 2008-03-15 | Koninkl Philips Electronics Nv | Funkkommunikationssystem |
EP1255369A1 (en) * | 2001-05-04 | 2002-11-06 | TELEFONAKTIEBOLAGET LM ERICSSON (publ) | Link adaptation for wireless MIMO transmission schemes |
JP2003018127A (ja) * | 2001-07-03 | 2003-01-17 | Fujitsu Ltd | 送信装置および受信装置 |
US7197084B2 (en) | 2002-03-27 | 2007-03-27 | Qualcomm Incorporated | Precoding for a multipath channel in a MIMO system |
US7103325B1 (en) * | 2002-04-05 | 2006-09-05 | Nortel Networks Limited | Adaptive modulation and coding |
US7397864B2 (en) * | 2002-09-20 | 2008-07-08 | Nortel Networks Limited | Incremental redundancy with space-time codes |
US8320301B2 (en) * | 2002-10-25 | 2012-11-27 | Qualcomm Incorporated | MIMO WLAN system |
US8326257B2 (en) * | 2002-10-28 | 2012-12-04 | Qualcomm Incorporated | Utilizing speed and position information to select an operational mode in a wireless communication system |
KR100518434B1 (ko) * | 2002-11-05 | 2005-09-29 | 엘지전자 주식회사 | 다중 입출력 이동 통신 시스템에서의 하향 제어신호전송방법 |
KR100532295B1 (ko) * | 2003-03-25 | 2005-11-29 | 재단법인서울대학교산학협력재단 | 다중 송수신 안테나 시스템을 위한 무선통신 장치 및방법 |
CA2427403C (en) * | 2003-04-21 | 2008-10-28 | Regents Of The University Of Minnesota | Space-time-frequency coded ofdm over frequency-selective fading channels |
US7388847B2 (en) * | 2003-08-18 | 2008-06-17 | Nortel Networks Limited | Channel quality indicator for OFDM |
US7315577B2 (en) * | 2003-09-15 | 2008-01-01 | Intel Corporation | Multiple antenna systems and method using high-throughput space-frequency block codes |
US7440510B2 (en) * | 2003-09-15 | 2008-10-21 | Intel Corporation | Multicarrier transmitter, multicarrier receiver, and methods for communicating multiple spatial signal streams |
US8233462B2 (en) * | 2003-10-15 | 2012-07-31 | Qualcomm Incorporated | High speed media access control and direct link protocol |
US8842657B2 (en) * | 2003-10-15 | 2014-09-23 | Qualcomm Incorporated | High speed media access control with legacy system interoperability |
US8483105B2 (en) * | 2003-10-15 | 2013-07-09 | Qualcomm Incorporated | High speed media access control |
US7120395B2 (en) * | 2003-10-20 | 2006-10-10 | Nortel Networks Limited | MIMO communications |
FI20031668A0 (fi) * | 2003-11-17 | 2003-11-17 | Nokia Corp | Siirtomenetelmä ja lähetin |
GB2408898B (en) * | 2003-12-02 | 2006-08-16 | Toshiba Res Europ Ltd | Improved communications apparatus and methods |
US7929409B2 (en) * | 2004-01-13 | 2011-04-19 | Interdigital Technology Corporation | Orthogonal frequency division multiplexing (OFDM) method and apparatus for protecting and authenticating wirelessly transmitted digital information |
US20050259629A1 (en) * | 2004-05-24 | 2005-11-24 | Neal Oliver | Adapting uplink/downlink subframe ratio in time division duplex physical frames |
WO2005125020A1 (en) * | 2004-06-22 | 2005-12-29 | Nortel Networks Limited | Methods and systems for enabling feedback in wireless communication networks |
EP2442513A1 (en) * | 2004-06-24 | 2012-04-18 | Nortel Networks Limited | Preambles in OFDMA System |
US7606319B2 (en) * | 2004-07-15 | 2009-10-20 | Nokia Corporation | Method and detector for a novel channel quality indicator for space-time encoded MIMO spread spectrum systems in frequency selective channels |
US7567621B2 (en) * | 2004-07-21 | 2009-07-28 | Qualcomm Incorporated | Capacity based rank prediction for MIMO design |
US7773535B2 (en) * | 2004-08-12 | 2010-08-10 | Motorola, Inc. | Method and apparatus for closed loop transmission |
ES2339788T3 (es) * | 2004-08-12 | 2010-05-25 | Interdigital Technology Corporation | Metodo y aparato para implementar la codificacion de bloque de frecuencias espaciales en un sistema de comunicacion inalambrica de multiplexacion por division en frecuencias ortogonales. |
US8031642B2 (en) * | 2004-10-20 | 2011-10-04 | Zte (Usa) Inc. | Subcarrier cluster-based power control in wireless communications |
US8804609B2 (en) * | 2004-11-02 | 2014-08-12 | Apple Inc. | Systems and methods for use with orthogonal frequency division multiplexing |
US7545875B2 (en) * | 2004-11-03 | 2009-06-09 | Nokia Corporation | System and method for space-time-frequency coding in a multi-antenna transmission system |
EP1832075B1 (en) * | 2004-12-27 | 2016-03-09 | LG Electronics Inc. | Communicating non-coherent detectable signal in broadband wireless access system |
KR100950644B1 (ko) * | 2005-03-04 | 2010-04-01 | 삼성전자주식회사 | 다중사용자 다중입출력 시스템의 피드백 방법 |
-
2004
- 2004-11-09 KR KR1020040091120A patent/KR100909539B1/ko active IP Right Grant
-
2005
- 2005-11-08 JP JP2005323911A patent/JP4509912B2/ja active Active
- 2005-11-08 US US11/268,893 patent/US7660607B2/en active Active
- 2005-11-09 EP EP05024447.4A patent/EP1655871B1/en active Active
- 2005-11-09 CN CN200510120289A patent/CN100583679C/zh active Active
Cited By (35)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8699587B2 (en) | 2006-08-18 | 2014-04-15 | Qualcomm Incorporated | Feedback of precoding control indication (PCI) and channel quality indication (CQI) in a wireless communication system |
CN105959051A (zh) * | 2006-08-18 | 2016-09-21 | 高通股份有限公司 | 无线通信系统中预编码控制指示(pci)和信道质量指示(cqi)的反馈 |
CN101155012B (zh) * | 2006-09-28 | 2013-05-01 | 中兴通讯股份有限公司 | 一种基于终端的多天线模式控制方法 |
WO2008037179A1 (fr) * | 2006-09-28 | 2008-04-03 | Zte Corporation | Procédé pour commander un mode à antennes multiples sur la base d'un point d'accès |
US8441982B2 (en) | 2006-09-28 | 2013-05-14 | Zte Corporation | Multiple antenna mode control method based on station |
WO2008037180A1 (fr) * | 2006-09-28 | 2008-04-03 | Zte Corporation | Procédé de commande de modes à antennes mutliples fondé sur une station |
US8582501B2 (en) | 2006-09-28 | 2013-11-12 | Zte Corporation | Multiple antenna mode control method based on access point |
CN101291163A (zh) * | 2007-04-17 | 2008-10-22 | 大唐移动通信设备有限公司 | 时分双工系统中进行预编码的方法、系统及装置 |
WO2008125021A1 (fr) * | 2007-04-17 | 2008-10-23 | Datang Mobile Communications Equipment Co., Ltd | Procédé, système et équipements pour précodage dans un système double à répartition dans le temps |
US9716604B2 (en) | 2007-04-20 | 2017-07-25 | Interdigital Technology Corporation | Method and apparatus for efficient precoding information validation for MIMO communications |
CN105634573A (zh) * | 2007-04-20 | 2016-06-01 | 交互数字技术公司 | e节点B、WTRU及网络实体 |
CN105634573B (zh) * | 2007-04-20 | 2019-08-20 | 交互数字技术公司 | e节点B、WTRU及网络实体 |
US10284265B2 (en) | 2007-04-20 | 2019-05-07 | Interdigital Technology Corporation | Method and apparatus for efficient precoding information validation for MIMO communications |
WO2008138164A1 (fr) * | 2007-05-10 | 2008-11-20 | Alcatel Shanghai Bell Company, Ltd. | Procédé pour programmer les transmissions de liaison montante d'un système de communication sans fil et dispositif associé |
CN101669301B (zh) * | 2007-05-10 | 2012-12-05 | 上海贝尔阿尔卡特股份有限公司 | 无线通信系统上行链路传输调度方法和相关设备 |
CN101911525B (zh) * | 2008-01-14 | 2014-12-03 | 爱立信电话股份有限公司 | Mimo通信中的开环预编码器循环 |
CN101911525A (zh) * | 2008-01-14 | 2010-12-08 | 爱立信电话股份有限公司 | Mimo通信中的开环预编码器循环 |
CN101499833B (zh) * | 2008-01-30 | 2013-12-18 | 富士通株式会社 | 多输入多输出通信系统和发送站 |
CN101534527B (zh) * | 2008-03-13 | 2013-03-20 | 中兴通讯股份有限公司 | 下行预编码信息指示方法 |
CN101540658B (zh) * | 2008-03-18 | 2012-11-28 | 中兴通讯股份有限公司 | 下行预编码指示方法 |
CN102362442B (zh) * | 2009-02-02 | 2014-08-27 | 高通股份有限公司 | 无线通信环境中的天线虚拟化的方法和无线通信装置 |
USRE49171E1 (en) | 2009-08-14 | 2022-08-09 | Lg Electronics Inc. | Method and apparatus for transmitting downlink reference signal in wireless communication system that supports multiple antennas |
USRE48016E1 (en) | 2009-08-14 | 2020-05-26 | Lg Electronics Inc. | Method and apparatus for transmitting downlink reference signal in wireless communication system that supports multiple antennas |
CN104158574A (zh) * | 2009-08-14 | 2014-11-19 | Lg电子株式会社 | 在支持多天线的无线通信系统中传输下行链路基准信号的方法及装置 |
CN104158574B (zh) * | 2009-08-14 | 2017-09-26 | Lg电子株式会社 | 在支持多天线的无线通信系统中传输下行链路基准信号的方法及装置 |
CN102415120A (zh) * | 2009-08-18 | 2012-04-11 | 上海贝尔股份有限公司 | 协同多点传输方法及其设备 |
CN102415120B (zh) * | 2009-08-18 | 2013-11-27 | 上海贝尔股份有限公司 | 协同多点传输方法及其设备 |
WO2011020214A1 (zh) * | 2009-08-18 | 2011-02-24 | 上海贝尔股份有限公司 | 协同多点传输方法及其设备 |
US8462658B2 (en) | 2009-09-09 | 2013-06-11 | Huawei Technologies Co., Ltd. | Cooperative communication method and base station |
WO2011029400A1 (zh) * | 2009-09-09 | 2011-03-17 | 华为技术有限公司 | 协作通信的方法及基站 |
US10560162B2 (en) | 2016-03-10 | 2020-02-11 | Huawei Technologies Co., Ltd. | Transmit diversity method, device, and system |
CN107733492A (zh) * | 2016-08-10 | 2018-02-23 | 华为技术有限公司 | 数据发送、接收方法和装置 |
US10735080B2 (en) | 2016-08-10 | 2020-08-04 | Huawei Technologies Co., Ltd. | Transmission scheme indication method, and data transmission method, apparatus, and system |
CN111226424A (zh) * | 2017-10-20 | 2020-06-02 | 高通股份有限公司 | 多层调制流 |
CN111226424B (zh) * | 2017-10-20 | 2021-03-23 | 高通股份有限公司 | 用于无线通信的方法和装置 |
Also Published As
Publication number | Publication date |
---|---|
US7660607B2 (en) | 2010-02-09 |
JP4509912B2 (ja) | 2010-07-21 |
EP1655871A2 (en) | 2006-05-10 |
JP2006141013A (ja) | 2006-06-01 |
KR20060042523A (ko) | 2006-05-15 |
CN100583679C (zh) | 2010-01-20 |
KR100909539B1 (ko) | 2009-07-27 |
EP1655871A3 (en) | 2011-08-24 |
US20060098568A1 (en) | 2006-05-11 |
EP1655871B1 (en) | 2019-03-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN100583679C (zh) | 在多天线宽带无线接入系统中支持各种多天线方案的方法 | |
US11258489B2 (en) | Methods and systems for enabling feedback in wireless communication networks | |
US10057892B2 (en) | Data and control multiplexing for uplink mimo with carrier aggregation and clustered-dft | |
CN102308489B (zh) | 在mimo无线通信系统中发送上行链路信号的装置及其方法 | |
CN101103600B (zh) | 在无线通信系统中指示数据突发分配的方法和系统 | |
CN101156322B (zh) | 用于在无线通信网络中实现反馈的方法和系统 | |
CN101682451B (zh) | 用于在正交频分复用系统中将调制码元映射到资源的方法和装置 | |
US10044532B2 (en) | Pre-coder selection based on resource block grouping | |
US20090316807A1 (en) | Method and apparatus for achieving transmit diversity and spatial multiplexing using antenna selection based on feedback information | |
CN102771061B (zh) | 指示使能的传输块的方法和系统 | |
KR20090069128A (ko) | 다중 대역 무선 주파수 기반 신호 송수신 방법 | |
WO2009132092A2 (en) | Rank and pmi in download control signaling for uplink single-user mimo (ul su-mimo) | |
CN1943152A (zh) | 用于具有自适应发射和反馈的多载波通信系统的方法和设备 | |
US9608703B2 (en) | Closed loop MIMO harmonized feedback | |
US20210111770A1 (en) | Pre-coder selection based on resource block grouping | |
CN101039169A (zh) | 第三代移动通信长期演进系统中信道复用方法与装置 | |
CN101277138A (zh) | 基于层交换的多天线复用装置数据发送、及接收方法 | |
CN102387107A (zh) | 基于二叉树的联合编码方法和编码器 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant |