Reference signal for a coordinated multi-point network implementation
    4.
    发明授权
    Reference signal for a coordinated multi-point network implementation 有权
    用于协调多点网络实施的参考信号

    公开(公告)号:US08305987B2

    公开(公告)日:2012-11-06

    申请号:US12705491

    申请日:2010-02-12

    IPC分类号: H04W4/00

    摘要: A method of decoding a channel state information reference signal (CSI-RS) is presented. An indication of a resource element (RE) configuration allocated for transmission of CSI-RSs by a first cell is received from a second cell. The method includes at least one of using the indication of the RE configuration to decode a first CSI-RS received from the first cell, and using the indication of the RE configuration to mute one or more REs within a data channel transmission received from a third cell. The first cell, second cell and third cell may be associated within a CSI-RS group. In some cases, at least two of the first cell, the second cell, and the third cell are mutually interfering cells. The indication of the RE configuration may include a plurality of logical indices having incremental values, the plurality of logical indices identifying REs used to transmit CSI-RS.

    摘要翻译: 提出了一种解码信道状态信息参考信号(CSI-RS)的方法。 从第二小区接收由第一小区分配用于CSI-RS的传输的资源元素(RE)配置的指示。 该方法包括使用RE配置的指示来对从第一小区接收的第一CSI-RS进行解码中的至少一个,以及使用RE配置的指示来静音从第三个小区接收的数据信道传输中的一个或多个RE 细胞。 第一小区,第二小区和第三小区可以在CSI-RS组内关联。 在一些情况下,第一细胞,第二细胞和第三细胞中的至少两个是相互干扰的细胞。 RE配置的指示可以包括具有增量值的多个逻辑索引,所述多个逻辑索引标识用于发送CSI-RS的RE。

    Method and system for random access interference mitigation in heterogeneous cellular networks
    5.
    发明授权
    Method and system for random access interference mitigation in heterogeneous cellular networks 有权
    异构蜂窝网络中随机接入干扰减轻的方法和系统

    公开(公告)号:US09025476B2

    公开(公告)日:2015-05-05

    申请号:US13458591

    申请日:2012-04-27

    摘要: Methods and systems at a user equipment, low power access node and first access node operating in a wireless network having a plurality of access nodes comprising a first access node and at least one low power access node having lower transmit power than the first access node, wherein the user equipment receives stronger downlink signals from the first access node than from the at least one low power access node, the method at the user equipment determining, by the user equipment, whether a low power access node is better for uplink data transmission than the first access node; and if the low power access node is better for uplink data transmission, sending from the user equipment to the low power access node, a random access preamble directed to the first access node.

    摘要翻译: 在具有多个接入节点的无线网络中操作的用户设备,低功率接入节点和第一接入节点的方法和系统包括第一接入节点和具有比第一接入节点更低的发射功率的至少一个低功率接入节点, 其中所述用户设备从所述第一接入节点接收比来自所述至少一个低功率接入节点的更强的下行链路信号,所述用户设备的方法由用户设备确定低功率接入节点对于上行链路数据传输是否更好, 第一接入节点; 并且如果低功率接入节点对于上行链路数据传输更好,则从用户设备向低功率接入节点发送指向第一接入节点的随机接入前导码。

    Method and system for uplink interference management in heterogeneous cellular networks
    6.
    发明授权
    Method and system for uplink interference management in heterogeneous cellular networks 有权
    异构蜂窝网络上行干扰管理方法与系统

    公开(公告)号:US09014171B2

    公开(公告)日:2015-04-21

    申请号:US13568587

    申请日:2012-08-07

    摘要: A method, at a first network access device of a heterogeneous network, the method sending a report to a second network access device indicating a user equipment (UE) in the vicinity of the second network access device to be handled in the uplink by the second network access device; receiving an uplink timing control report from the second network access device; transmitting uplink timing control adjustments to the UE; allocating uplink resources for the second network access device to forward uplink information; allocating physical downlink control channel (‘PDCCH’) resources belonging to the first network access device for transmitting uplink scheduling information provided by the second network access device to the UE; receiving uplink information including uplink scheduling information from the second network access device at the first network access device; and sending the uplink scheduling information to the UE.

    摘要翻译: 一种方法,在异构网络的第一网络接入设备处,向所述第二网络接入设备发送报告的方法,所述第二网络接入设备指示所述第二网络接入设备附近的用户设备(UE)在所述上行链路中由所述第二网络接入设备 网络接入设备; 从所述第二网络接入设备接收上行链路定时控制报告; 向所述UE发送上行链路定时控制调整; 为第二网络接入设备分配上行链路资源以转发上行链路信息; 分配属于所述第一网络接入设备的物理下行链路控制信道(“PDCCH”)资源,用于向所述UE发送由所述第二网络接入设备提供的上行链路调度信息; 从所述第一网络接入设备处的所述第二网络接入设备接收包括上行链路调度信息的上行链路信息; 并向UE发送上行调度信息。

    Reference Signal for a Coordinated Multi-Point Network Implementation
    8.
    发明申请
    Reference Signal for a Coordinated Multi-Point Network Implementation 有权
    协调多点网络实施的参考信号

    公开(公告)号:US20130044685A1

    公开(公告)日:2013-02-21

    申请号:US13578573

    申请日:2011-02-14

    IPC分类号: H04B15/00

    摘要: A system and method for broadcasting a channel state information reference signal (CSI-RS) is disclosed. A CSI-RS that is orthogonal to CSI-RSs transmitted by each of a first network cell and each of a set of neighbor cells that interfere with the first network cell is identified. In one implementation, the first network cell has a coverage containing a coverage of a second network cell. The method includes transmitting, from the second network cell, the CSI-RS that is orthogonal to CSI-RSs transmitted by each of the first network cell and each of a set of interfering neighbor cells.

    摘要翻译: 公开了一种用于广播信道状态信息参考信号(CSI-RS)的系统和方法。 识别与第一网络小区和干扰第一网络小区的一组相邻小区中的每一个发送的与CSI-RS正交的CSI-RS。 在一个实现中,第一网络小区具有包含第二网络小区的覆盖的覆盖。 该方法包括从第二网络小区发送与由第一网络小区和一组干扰相邻小区中的每一个发送的CSI-RS正交的CSI-RS。

    JOINT TRANSMISSION USING INTERFERENCE ALIGNMENT
    10.
    发明申请
    JOINT TRANSMISSION USING INTERFERENCE ALIGNMENT 有权
    使用干扰对齐的联合传输

    公开(公告)号:US20150131751A1

    公开(公告)日:2015-05-14

    申请号:US14236229

    申请日:2011-08-01

    IPC分类号: H04B7/04 H04W36/20

    摘要: Systems and methods can implemented to joint transmission for interference management in wireless communications. A first transmitter having M antennas can acquire a channel state information (CSI) matrix for each of a plurality of multiple-input-multiple output (MIMO) channels between a first transmitter and a plurality of receivers. The first transmitter can determine transmission ranks, wherein each of the transmission ranks corresponds to a number of one or more data streams to be transmitted from both the first transmitter and a second transmitter to a receiver of the plurality of receivers. A maximum transmission rank may be identified from the determined transmission ranks. Transmit data can be generated that include the one or more data streams to each of the corresponding plurality of receivers. A precoding matrix can be generated for the generated transmit data based, at least in part, on the acquired CSI matrix. The first transmitter can then encode the transmit data using the corresponding generated precoding matrix.

    摘要翻译: 系统和方法可以实现用于联合传输用于无线通信中的干扰管理。 具有M个天线的第一发射机可以获取第一发射机和多个接收机之间的多个多输入多输出(MIMO)信道中的每一个的信道状态信息(CSI)矩阵。 第一发射机可以确定传输秩,其中每个传输等级对应于要从第一发射机和第二发射机两者发送到多个接收机的接收机的一个或多个数据流的数量。 可以从确定的传输等级识别最大传输等级。 可以生成包括到相应的多个接收器中的每一个的一个或多个数据流的发送数据。 至少部分地基于所获取的CSI矩阵,可以为所生成的发送数据生成预编码矩阵。 然后,第一发射机可以使用相应的生成的预编码矩阵对发射数据进行编码。