Method and apparatus for multi-input multi-output downlink transmission control
    3.
    发明授权
    Method and apparatus for multi-input multi-output downlink transmission control 有权
    多输入多输出下行链路传输控制的方法和装置

    公开(公告)号:US08611244B2

    公开(公告)日:2013-12-17

    申请号:US13278645

    申请日:2011-10-21

    IPC分类号: H04L12/26

    摘要: A Multi-Input Multi-Output (MIMO) downlink transmission control method that is related to communications technologies is disclosed in embodiments of the present invention. The method includes: obtaining a channel fading change rate and a feedback delay of a user; calculating out a closed-loop MIMO throughput gain according to the channel fading change rate and the feedback delay; and determining a downlink transmission mode according to the closed-loop MIMO throughput gain, wherein the downlink transmission mode includes a closed-loop mode or an open-loop mode. A MIMO downlink transmission control apparatus is also disclosed.

    摘要翻译: 在本发明的实施例中公开了与通信技术相关的多输入多输出(MIMO)下行链路传输控制方法。 该方法包括:获得用户的信道衰落变化率和反馈延迟; 根据信道衰落变化率和反馈延迟计算闭环MIMO吞吐量增益; 以及根据所述闭环MIMO吞吐量增益确定下行链路传输模式,其中所述下行链路传输模式包括闭环模式或开环模式。 还公开了MIMO下行链路传输控制装置。

    METHOD AND APPARATUS FOR MULTI-INPUT MULTI-OUTPUT DOWNLINK TRANSMISSION CONTROL
    4.
    发明申请
    METHOD AND APPARATUS FOR MULTI-INPUT MULTI-OUTPUT DOWNLINK TRANSMISSION CONTROL 有权
    用于多输入多输出下行链路传输控制的方法和装置

    公开(公告)号:US20120093016A1

    公开(公告)日:2012-04-19

    申请号:US13278645

    申请日:2011-10-21

    IPC分类号: H04W24/00 H04W72/04

    摘要: A Multi-Input Multi-Output (MIMO) downlink transmission control method that is related to communications technologies is disclosed in embodiments of the present invention. The method includes: obtaining a channel fading change rate and a feedback delay of a user; calculating out a closed-loop MIMO throughput gain according to the channel fading change rate and the feedback delay; and determining a downlink transmission mode according to the closed-loop MIMO throughput gain, wherein the downlink transmission mode includes a closed-loop mode or an open-loop mode. A MIMO downlink transmission control apparatus is also disclosed.

    摘要翻译: 在本发明的实施例中公开了与通信技术相关的多输入多输出(MIMO)下行链路传输控制方法。 该方法包括:获得用户的信道衰落变化率和反馈延迟; 根据信道衰落变化率和反馈延迟计算闭环MIMO吞吐量增益; 以及根据所述闭环MIMO吞吐量增益确定下行链路传输模式,其中所述下行链路传输模式包括闭环模式或开环模式。 还公开了MIMO下行链路传输控制装置。

    MIMO precoding enabling spatial multiplexing, power allocation and adaptive modulation and coding
    5.
    发明授权
    MIMO precoding enabling spatial multiplexing, power allocation and adaptive modulation and coding 有权
    MIMO预编码使得能够进行空间复用,功率分配和自适应调制和编码

    公开(公告)号:US09154202B2

    公开(公告)日:2015-10-06

    申请号:US13556124

    申请日:2012-07-23

    摘要: In a closed-loop wireless communication system, a codebook-based feedback mechanism is provided to enable non-unitary precoding for multi-stream transmission, where in each stream is optimized with suitable transmission power allocation and AMC. The codebook-based feedback mechanism uses a precoding codebook having a power allocation matrix which is constrained to specify that beamforming always applies full power to a predetermined beam. With this constraint, a one-bit power allocation feedback index may be used to switch between beamforming and spatial multiplexing.

    摘要翻译: 在闭环无线通信系统中,提供基于码本的反馈机制,以实现用于多流传输的非单位预编码,其中在每个流中以合适的传输功率分配和AMC进行优化。 基于码本的反馈机制使用具有功率分配矩阵的预编码码本,该功率分配矩阵被约束以规定波束成形总是对预定波束施加全部功率。 利用该约束,可以使用一位功率分配反馈索引来在波束形成和空间复用之间切换。

    Method for interference alignment in wireless network
    6.
    发明授权
    Method for interference alignment in wireless network 有权
    无线网络干扰对准方法

    公开(公告)号:US08843166B2

    公开(公告)日:2014-09-23

    申请号:US13575285

    申请日:2011-02-01

    IPC分类号: H04B15/00

    摘要: A method for interference alignment in wireless network having 3 transmitters and 3 receivers which are equipped with M antennas is provided. The method comprising: transmitting, performed by each of the 3 transmitters, a pilot signal known to the 3 receivers; estimating, performed by each of the 3 receivers, each channel from transmitter; transmitting, performed by each of the 3 receivers, feedback information to target transmitter; and determining, performed by transmitter 2 and transmitter 3, a precoding vector; wherein a degree of freedom (DoF) of a transmitter 1 is (M/2−α), a DoF of the transmitter 2 or the transmitter 3 is M/2.

    摘要翻译: 提供了一种具有3个发射机和3个接收机的无线网络中的配备M个天线的干扰对准方法。 该方法包括:由3个发射机中的每一个发送由3个接收机已知的导频信号; 估计,由3个接收机中的每一个执行,来自发射机的每个信道; 由3个接收机中的每一个发送,向目标发射机发送反馈信息; 并由发射机2和发射机3确定预编码向量; 其中发射机1的自由度(DoF)为(M / 2-α),发射机2或发射机3的DoF为M / 2。

    MIMO precoding enabling spatial multiplexing, power allocation and adaptive modulation and coding
    7.
    发明授权
    MIMO precoding enabling spatial multiplexing, power allocation and adaptive modulation and coding 有权
    MIMO预编码使得能够进行空间复用,功率分配和自适应调制和编码

    公开(公告)号:US08229019B2

    公开(公告)日:2012-07-24

    申请号:US12762013

    申请日:2010-04-16

    IPC分类号: H04L27/10

    摘要: In a closed-loop wireless communication system, a codebook-based feedback mechanism is provided to enable non-unitary precoding for multi-stream transmission, where in each stream is optimized with suitable transmission power allocation and AMC. The codebook-based feedback mechanism uses a precoding codebook having a power allocation matrix which is constrained to specify that beamforming always applies full power to a predetermined beam. With this constraint, a one-bit power allocation feedback index may be used to switch between beamforming and spatial multiplexing.

    摘要翻译: 在闭环无线通信系统中,提供基于码本的反馈机制,以实现用于多流传输的非单位预编码,其中在每个流中以合适的传输功率分配和AMC进行优化。 基于码本的反馈机制使用具有功率分配矩阵的预编码码本,该功率分配矩阵被约束以规定波束成形总是对预定波束施加全部功率。 利用该约束,可以使用一位功率分配反馈索引来在波束形成和空间复用之间切换。

    MIMO precoding enabling spatial multiplexing, power allocation and adaptive modulation and coding
    8.
    发明授权
    MIMO precoding enabling spatial multiplexing, power allocation and adaptive modulation and coding 有权
    MIMO预编码使得能够进行空间复用,功率分配和自适应调制和编码

    公开(公告)号:US07702029B2

    公开(公告)日:2010-04-20

    申请号:US11537902

    申请日:2006-10-02

    IPC分类号: H04B7/02

    摘要: In a closed-loop wireless communication system, a codebook-based feedback mechanism is provided to enable non-unitary precoding for multi-stream transmission, where in each stream is optimized with suitable transmission power allocation and AMC. The codebook-based feedback mechanism uses a precoding codebook having a power allocation matrix which is constrained to specify that beamforming always applies full power to a predetermined beam. With this constraint, a one-bit power allocation feedback index may be used to switch between beamforming and spatial multiplexing.

    摘要翻译: 在闭环无线通信系统中,提供基于码本的反馈机制,以实现用于多流传输的非单位预编码,其中在每个流中以合适的传输功率分配和AMC进行优化。 基于码本的反馈机制使用具有功率分配矩阵的预编码码本,该功率分配矩阵被约束以规定波束成形总是对预定波束施加全部功率。 利用该约束,可以使用一位功率分配反馈索引来在波束形成和空间复用之间切换。

    METHOD FOR INTERFERENCE ALIGNMENT IN WIRELESS NETWORK
    9.
    发明申请
    METHOD FOR INTERFERENCE ALIGNMENT IN WIRELESS NETWORK 有权
    无线网络干扰对齐方法

    公开(公告)号:US20120289267A1

    公开(公告)日:2012-11-15

    申请号:US13575285

    申请日:2011-02-01

    IPC分类号: H04B15/00

    摘要: A method for interference alignment in wireless network having 3 transmitters and 3 receivers which are equipped with M antennas is provided. The method comprising: transmitting, performed by each of the 3 transmitters, a pilot signal known to the 3 receivers; estimating, performed by each of the 3 receivers, each channel from transmitter; transmitting, performed by each of the 3 receivers, feedback information to target transmitter; and determining, performed by transmitter 2 and transmitter 3, a precoding vector; wherein a degree of freedom(DoF) of a transmitter 1 is (M/2−α), a DoF of the transmitter 2 or the transmitter 3 is M/2.

    摘要翻译: 提供了一种具有3个发射机和3个接收机的无线网络中的配备M个天线的干扰对准方法。 该方法包括:由3个发射机中的每一个发送由3个接收机已知的导频信号; 估计,由3个接收机中的每一个执行,来自发射机的每个信道; 由3个接收机中的每一个发送,向目标发射机发送反馈信息; 并由发射机2和发射机3确定预编码向量; 其中发射机1的自由度(DoF)为(M / 2-α),发射机2或发射机3的DoF为M / 2。