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    • 2. 发明申请
    • METHODS AND ARRANGEMENTS IN A COMMUNICATION SYSTEM
    • 通信系统中的方法和安排
    • WO2009102251A2
    • 2009-08-20
    • PCT/SE2008/051218
    • 2008-10-28
    • TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)JÖNGREN, GeorgeGÖRANSSON, Bo
    • JÖNGREN, GeorgeGÖRANSSON, Bo
    • H04B7/04H04B7/06
    • H04B7/0639H04B7/0417H04B7/063H04B7/0632
    • A method and arrangement in a first node (110) for sending feedback data on a feedback channel (121) to a second node (111) is provided. The feedback data is indicative of channel properties of a data channel (120) for sending data from the second node (111) to the first node (110). A wireless MIMO communications system (100) comprises the first and second nodes (110, 111). The first node (110) sends (420), in a time period of the feedback channel (121), feedback data comprising a first rank indicator of the data channel (120). Furthermore, the first node (110) sends additional data (212, 242) being independent of the first rank indicator in the time period. Moreover, a corresponding method and arrangement in a second node (111) for receiving feedback data on a feedback channel is provided.
    • 提供了用于在反馈信道(121)上向第二节点(111)发送反馈数据的第一节点(110)中的方法和设备。 反馈数据表示用于从第二节点(111)向第一节点(110)发送数据的数据信道(120)的信道特性。 无线MIMO通信系统(100)包括第一和第二节点(110,111)。 第一节点(110)在反馈信道(121)的时间段内发送(420)包括数据信道(120)的第一秩指示符的反馈数据。 此外,第一节点(110)在该时间段内发送独立于第一秩指示符的附加数据(212,242)。 此外,提供了用于在反馈信道上接收反馈数据的第二节点(111)中的对应方法和装置。
    • 5. 发明申请
    • SYSTEM AND METHOD FOR ALLOCATING TRANSMISSION RESOURCES BASED ON A TRANSMISSION RANK
    • 基于传输等级分配传输资源的系统和方法
    • WO2011138740A1
    • 2011-11-10
    • PCT/IB2011/051958
    • 2011-05-03
    • TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)HAMMARWALL, DavidJÖNGREN, GeorgeGÖRANSSON, Bo
    • HAMMARWALL, DavidJÖNGREN, GeorgeGÖRANSSON, Bo
    • H04L1/00H04L5/00H04L1/16
    • H04W72/0413H04L1/003H04L1/0079H04L1/0618H04L1/1664H04L1/1671H04L5/0016H04L5/0026H04L5/0044H04L5/0046H04L5/0053H04L25/03929H04W72/02H04W72/0446
    • A method for wirelessly transmitting data with a transmitter using a plurality of transmission, layers includes estimating a number of data vector symbols (124) to be allocated to one or more user data codewords (122) during the subframe arid determining a number of bits in the one or more user data codewords (122), The method also includes calculating a nominal number of control vector symbols (124) to allocate to control information based., at least in part, on the estimated number of data vector symbols (124) and the determined number of bits in the one or more user data codewords (122). Additionally, the method includes determining an offset value based, at least in part, on a number of layers over which a transmitter (100) will be transmitting during the subframe and calculating a final number of control vector symbols (124) by multiplying the nominal number of control vector symbols (124) and the offset value. The method also includes mapping one or more control codewords (120) to the final number of control vector symbols (124) and transmitting the user data vector symbols and the control vector symbols over the plurality of transmission layers during the subframe.
    • 一种使用多个传输层与发射机无线发送数据的方法包括:估计在子帧期间分配给一个或多个用户数据码字(122)的数据向量符号(124)的数目,并确定 所述一个或多个用户数据码字(122),所述方法还包括:至少部分地基于估计数量的数据向量符号(124)来计算控制向量符号(124)的额定数量以分配给控制信息, 以及所确定的一个或多个用户数据码字(122)中的比特数。 另外,该方法包括:至少部分地基于发射机(100)将在子帧期间发射的层的数量来确定偏移值,并且通过将标称的乘法运算来计算最终数量的控制向量符号(124) 控制向量符号(124)的数量和偏移值。 该方法还包括将一个或多个控制码字(120)映射到最终数量的控制向量符号(124),并在子帧期间在多个传输层上发送用户数据向量符号和控制向量符号。
    • 8. 发明申请
    • ANTENNA DEVICE AND METHOD IN A MIMO SYSTEM
    • 天线设备和MIMO系统中的方法
    • WO2012039659A1
    • 2012-03-29
    • PCT/SE2010/051024
    • 2010-09-23
    • TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)RINGSTRÖM, MarkusGÖRANSSON, BoOVESJÖ, FredrikASPLUND, Henrik
    • RINGSTRÖM, MarkusGÖRANSSON, BoOVESJÖ, FredrikASPLUND, Henrik
    • H04B7/06H01Q21/08H04B7/04H04L1/06
    • H04B7/0456H04B7/0434H04B7/0469H04B7/0617
    • The invention relates to the technical field of radio communications, and in particular to an antenna device for a radio base station, and a method of operating an antenna device in a Multiple-Input Multiple-Output system. Embodiments of the invention disclose a secondary precoder (24) in series with a Multiple-Input Multiple-Output precoder (22). The Multiple-Input Multiple-Output precoder (22) has a first plurality of inputs (26, 28) for one or more Multiple-Input Multiple-Output data streams, and a first plurality of outputs (30, 32) for the one or more Multiple-Input Multiple-Output data streams. The secondary precoder has a second plurality of inputs (34, 36) and a second plurality of outputs (38, 40). The first plurality of outputs (30, 32) are in communication with the second plurality of inputs (34, 36). The antenna device further comprises a controller device (64), and the antenna device is operable to control an output power value of the one or more data streams at the second plurality of outputs (38, 40).
    • 本发明涉及无线电通信的技术领域,特别涉及一种用于无线电基站的天线装置以及在多输入多输出系统中操作天线装置的方法。 本发明的实施例公开了与多输入多输出预编码器(22)串联的次级预编码器(24)。 所述多输入多输出预编码器(22)具有用于一个或多个多输入多输出数据流的第一多个输入(26,28)和用于所述一个或多个输出多输出数据流的第一多个输出(30,32) 更多多输入多输出数据流。 次级预编码器具有第二多个输入端(34,36)和第二多个输出端(38,40)。 第一多个输出(30,32)与第二多个输入(34,36)通信。 天线装置还包括控制器装置(64),并且天线装置可操作以在第二多个输出端(38,40)处控制一个或多个数据流的输出功率值。
    • 10. 发明申请
    • A SIGNAL COMBINER, METHOD, COMPUTER PROGRAM AND COMPUTER PROGRAM PRODUCT
    • 信号组合器,方法,计算机程序和计算机程序产品
    • WO2012166030A1
    • 2012-12-06
    • PCT/SE2011/050689
    • 2011-06-01
    • TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)GÖRANSSON, BoPETERSSON, SvenJOHANSSON, Martin
    • GÖRANSSON, BoPETERSSON, SvenJOHANSSON, Martin
    • H01Q3/40H01Q25/00
    • H04B7/0617H01Q1/246H01Q3/40H01Q25/001
    • It is presented a signal combiner for combining transmission signals to foe supplied to four antennas devices, wherein two of the antenna devices are polarised in a first orientation and two of the antenna devices are polarised in a second orientation essentially orthogonal to the first orientation. The signal combiner comprises: four input connections arranged to receive the transmission signals; four output connections arranged to drive a respective one of the four of antenna devices using respective output signals. The signal combiner is arranged to combine transmission signals supplied on each input connection to all of the four output connections using beam forming and phase adjustment, such that, in use, each supplied transmission signal generates a central beam polarised in the first orientation and a side beam polarised in the second orientation, It is also presented a corresponding method, computer program and computer program product.
    • 提供了一种信号组合器,用于将发送信号组合到提供给四个天线装置的敌人,其中两个天线装置以第一取向极化,并且两个天线装置以基本上与第一取向正交的第二取向极化。 信号组合器包括:四个输入连接,用于接收传输信号; 四个输出连接被布置为使用相应的输出信号驱动四个天线装置中的相应一个。 信号组合器被布置成使用波束形成和相位调整将在每个输入连接上提供的传输信号组合到所有四个输出连接中,使得在使用中,每个所提供的传输信号产生沿第一方向偏振的中心光束和一侧 光束在第二个方向偏振,它还提出了相应的方法,计算机程序和计算机程序产品。