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    Subcarrier group based power control for OFDMA systems
    25.
    发明授权
    Subcarrier group based power control for OFDMA systems 失效
    用于OFDMA系统的基于子载波组的功率控制

    公开(公告)号：US08320396B2

    公开(公告)日：2012-11-27

    申请号：US11491470

    申请日：2006-07-21

    Applicant: Manyuan Shen ,  Guanbin Xing

    Inventor： Manyuan Shen ,  Guanbin Xing

    IPC: H04J3/16

    CPC classification number: H04W72/0473 ,  H04W4/06 ,  H04W52/343 ,  H04W52/346 ,  H04W52/40 ,  H04W72/048

    Abstract: A system and method of wireless communication power control is provided which allows for adjusting power levels without requiring high bandwidth for control. Embodiments allocate subcarriers into unequal power groups, each group having a consistent subcarrier power level. Using interference parameter information from a user, a subcarrier is assigned from a group having adequate power to maintain the user's required power level. In general, users with higher power requirements, such as those near cell boundaries, will be assigned subcarriers from a group having a higher power level. A cell may use a different allocation than a neighbor, so that subcarriers with the highest power level in one cell may not also have the highest power level in a neighboring cell. Such diversity may reduce inter-cell interference of the subcarriers near a cell boundary, since no two subcarriers are transmitted with highest power simultaneously by neighboring base stations.

    Abstract translation: 提供了一种无线通信功率控制的系统和方法，其允许调整功率水平，而不需要高带宽用于控制。 实施例将副载波分配到不等功率组中，每组具有一致的副载波功率电平。 使用来自用户的干扰参数信息，从具有足够功率的组分配子载波以维持用户所需的功率电平。 一般来说，具有较高功率要求的用户（例如小区边界附近的用户）将被从具有较高功率级别的组中分配副载波。 小区可以使用与邻居不同的分配，使得一个小区中具有最高功率电平的子载波在相邻小区中可能不具有最高功率电平。 这种分集可以减少小区边界附近的子载波的小区间干扰，因为相邻基站同时以最高的功率发送两个子载波。

    Reducing multi-cell interference using cooperative random beam forming
    26.
    发明授权
    Reducing multi-cell interference using cooperative random beam forming 失效
    使用协同随机波束形成减少多小区干扰

    公开(公告)号：US08280444B1

    公开(公告)日：2012-10-02

    申请号：US12037758

    申请日：2008-02-26

    Applicant: Manyuan Shen ,  Guanbin Xing ,  Xun Shao

    Inventor： Manyuan Shen ,  Guanbin Xing ,  Xun Shao

    IPC: H04M1/00 ,  H04B1/38

    CPC classification number: H04B7/024 ,  H04B7/0606 ,  H04B7/0695

    Abstract: Systems and methods which implement cooperative random or quasi-random beam forming as between a plurality of base stations in a wireless network to reduce multi-cell interference are shown. For example, a plurality of base stations in a wireless network cooperate to provide frequency resources, such as channels, subchannels, subcarriers, etc., in a plurality of randomesque beams. In operation, subscriber stations preferably analyze signals as received on a plurality of the randomesque beams to determine one or more “best” beams for use in communication between the subscriber station and base station. Assuming an identified beam is available for use by the subscriber station, payload communications may be provided using one or more beams identified by the subscriber station as a “best” beam. The base stations of the wireless network preferably cooperate to periodically reform the randomesque beams.

    Abstract translation: 示出了在无线网络中的多个基站之间实现协作随机或准随机波束形成以减少多小区干扰的系统和方法。 例如，无线网络中的多个基站协作以在多个随机矩阵波束中提供频率资源，例如信道，子信道，子载波等。 在操作中，用户站优选地分析在多个随机阵列波束上接收的信号，以确定用于用户站和基站之间的通信中使用的一个或多个最佳波束。 假设所识别的波束可供用户台使用，可以使用由用户台标识的一个或多个波束作为最佳波束来提供有效载荷通信。 无线网络的基站优选地协作以周期性地改变随机阵列。

    Methods and systems for channel estimation in a wireless communication network
    27.
    发明授权
    Methods and systems for channel estimation in a wireless communication network 失效
    无线通信网络中信道估计的方法和系统

    公开(公告)号：US08275320B1

    公开(公告)日：2012-09-25

    申请号：US12024675

    申请日：2008-02-01

    Applicant: Guanbin Xing ,  Manyuan Shen ,  Xun Shao

    Inventor： Guanbin Xing ,  Manyuan Shen ,  Xun Shao

    IPC: H04B1/00 ,  H04B15/00

    CPC classification number: H04W48/16

    Abstract: Methods and systems for improved channel estimation that jointly consider interference contributions and noise contributions separately. Associated method involve measuring pilot channel signals at a receiver and then determining what component of the measured pilot channel signals are attributable to a serving BS and what component of the measured pilot channel signals are attributable to an interfering BS. This information is used to determine a product of the pilot channel signals attributable to the serving BS and the pilot channel signal attributable to the interfering BS, where the found product is used to estimate said channel.

    Abstract translation: 改进信道估计的方法和系统，分别共同考虑干扰贡献和噪声贡献。 相关方法涉及在接收机处测量导频信道信号，然后确定所测量的导频信道信号的哪个分量可归因于服务BS，并且所测量的导频信道信号的哪个分量归因于干扰BS。 该信息用于确定归因于服务BS的导频信道信号和归因于干扰BS的导频信道信号的乘积，其中使用所发现的乘积来估计所述信道。

    Multi-Carrier Communications With Group-Based Subcarrier Allocation
    28.
    发明申请
    Multi-Carrier Communications With Group-Based Subcarrier Allocation 审中-公开
    基于组的子载波分配的多载波通信

    公开(公告)号：US20110170446A1

    公开(公告)日：2011-07-14

    申请号：US13053111

    申请日：2011-03-21

    Applicant: Xiaodong Li ,  Hui Liu ,  Hujun Yin ,  Guanbin Xing ,  Fuqi Mu

    Inventor： Xiaodong Li ,  Hui Liu ,  Hujun Yin ,  Guanbin Xing ,  Fuqi Mu

    IPC: H04W72/08 ,  H04W24/08

    CPC classification number: H04L5/0037 ,  H04L1/0009 ,  H04L1/0025 ,  H04L1/0026 ,  H04L5/0023 ,  H04L5/006 ,  H04L5/023 ,  H04L27/2608 ,  H04W24/00 ,  H04W72/02 ,  H04W72/0406 ,  H04W72/085 ,  H04W84/02

    Abstract: A method and apparatus for subcarrier selection for systems is described. In one embodiment, the system employs orthogonal frequency division multiple access (OFDMA). In one embodiment, a method for subcarrier selection comprises a subscriber measuring channel and interference information for subcarriers based on pilot symbols received from a base station, the subscriber selecting a set of candidate subcarriers, providing feedback information on the set of candidate subcarriers to the base station, and receiving an indication of subcarriers of the set of subcarriers selected by the base station for use by the subscriber.

    Abstract translation: 描述了用于系统的子载波选择的方法和装置。 在一个实施例中，系统采用正交频分多址（OFDMA）。 在一个实施例中，一种用于子载波选择的方法包括用户测量信道和基于从基站接收的导频符号的子载波干扰信息，用户选择一组候选子载波，向基站提供关于候选子载波集合的反馈信息 并且接收由所述基站选择以供所述用户使用的所述一组子载波的子载波的指示。

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