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    High performance and low complexity scheduling method for adaptive resource usage in OFDMA wireless relay networks
    11.
    发明授权
    High performance and low complexity scheduling method for adaptive resource usage in OFDMA wireless relay networks 有权
    OFDMA无线中继网络中自适应资源使用的高性能和低复杂度调度方法

    公开(公告)号：US08660030B2

    公开(公告)日：2014-02-25

    申请号：US13192878

    申请日：2011-07-28

    Applicant: Karthikeyan Sundaresan ,  Sampath Rangarajan

    Inventor： Karthikeyan Sundaresan ,  Sampath Rangarajan

    IPC: H04L12/28 ,  H04J1/16

    CPC classification number: H04W72/1205 ,  H04B7/2606 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/0064 ,  H04W28/06 ,  H04W84/047

    Abstract: A method for scheduling transmissions in wireless network includes receiving information ranging from conventional data to real-time streaming applications into a basestation of an OFDMA wireless relay network and scheduling transmission of the information from the basestation by influencing adaptive frame segmentation and access hop reuse in the transmission of the information for achieving higher transmission flow of the information, Where the scheduling is formulated as an integer program, the scheduling includes solving a linear programming relaxation of the integer program and rounding to integral allocations with allocation to at least one of a subset of wireless users and subsets of relays in the network for obtaining frame segmentation and reuse. Where the scheduling is formulated by following a bisection approach to guide adaptation of the frame segmentation, the scheduling determines a subset of users with maximum flow per unit resource for a given frame segmentation and the resulting flow from current and previous scheduling being used to guide adaptation of frame segmentation towards convergence.

    Abstract translation: 一种用于在无线网络中调度传输的方法包括从常规数据到实时流应用的接收信息到OFDMA无线中继网络的基站，并且通过影响自适应帧分段和接入跳跃重用来调度来自基站的信息传输 用于实现信息的更高传输流的信息的传输在其中将调度表达为整数程序的情况下，调度包括求解整数程序的线性规划松弛和舍入到整数分配，并将其分配给以下各项中的至少一个： 无线用户和网络中的继电器子集，用于获得帧分割和重用。 在通过遵循用于引导帧分段的适应的二分法来制定调度的情况下，调度确定用于给定帧分段的每单位资源的最大流量的用户的子集，并且来自当前和先前调度的结果流用于指导适应 的帧分割趋向于收敛。

    Methods and systems for location-based allocation of macro cell resources
    12.
    发明授权
    Methods and systems for location-based allocation of macro cell resources 有权
    用于基于位置的宏小区资源分配的方法和系统

    公开(公告)号：US08374135B2

    公开(公告)日：2013-02-12

    申请号：US12567145

    申请日：2009-09-25

    Applicant: Karthikeyan Sundaresan ,  Sampath Rangarajan

    Inventor： Karthikeyan Sundaresan ,  Sampath Rangarajan

    IPC: H04W4/20

    CPC classification number: H04W72/04 ,  H04L5/0023 ,  H04W72/042 ,  H04W72/0486 ,  H04W84/045

    Abstract: Methods and systems for reusing macro cell resources in femto cell base stations or relay stations in a non-collaborative manner are disclosed. In addition, orthogonal resource allocation between a macro cell base station and femto cell base stations/relay stations may be dynamically adjusted by considering user-population variance. Moreover, an additional level of spatial reuse by femto cell base stations or relay stations can be provided by employing macro cell user location information.

    Abstract translation: 公开了以非协作方式在毫微微小区基站或中继站中重用宏小区资源的方法和系统。 此外，可以通过考虑用户群体方差来动态地调整宏小区基站和毫微微小区基站/中继站之间的正交资源分配。 此外，可以通过使用宏小区用户位置信息来提供毫微微小区基站或中继站的附加级别的空间重用。

    METHOD FOR ANTENNA CANCELLATION FOR WIRELESS COMMUNICATION
    15.
    发明申请
    METHOD FOR ANTENNA CANCELLATION FOR WIRELESS COMMUNICATION 审中-公开
    无线通信天线消除方法

    公开(公告)号：US20120154249A1

    公开(公告)日：2012-06-21

    申请号：US13325019

    申请日：2011-12-13

    Applicant: Mohammad A. Khojastepour ,  Karthikeyan Sundaresan ,  Sampath Rangarajan

    Inventor： Mohammad A. Khojastepour ,  Karthikeyan Sundaresan ,  Sampath Rangarajan

    IPC: H01Q21/00

    CPC classification number: H01Q3/2605 ,  H01Q21/00 ,  H04B1/525 ,  H04B7/0413 ,  H04B7/10

    Abstract: A method for antenna cancellation including placing a transmit antenna and its tandem transmit antenna in one line being a transmit antenna line, and placing a receive antenna and its tandem receive antenna in another line being a receive antenna line so that the transmit antenna and receive antenna lines are orthogonal and the transmit antenna line being the bisector of the line segment between the receive antenna and its tandem and the receive antenna line being the bisector of the line segment between the transmit antenna and its tandem antenna.

    Abstract translation: 一种用于天线消除的方法，包括将发射天线及其串联发射天线放置在一条线路中，作为发射天线，并将接收天线及其串联接收天线放置在另一条线中，作为接收天线线，使得发射天线和接收天线 线是正交的，并且发射天线线是接收天线与其串联之间的线段的二等分线，并且接收天线线是发射天线与其串联天线之间的线段的二等分线。

    MULTICAST SCHEDULING SYSTEMS AND METHODS FOR LEVERAGING COOPERATION GAINS IN RELAY NETWORKS
    16.
    发明申请
    MULTICAST SCHEDULING SYSTEMS AND METHODS FOR LEVERAGING COOPERATION GAINS IN RELAY NETWORKS 有权
    用于跨越继电网络合作增益的多媒体调度系统和方法

    公开(公告)号：US20110199913A1

    公开(公告)日：2011-08-18

    申请号：US12906527

    申请日：2010-10-18

    Applicant: Karthikeyan Sundaresan ,  Sampath Rangarajan

    Inventor： Karthikeyan Sundaresan ,  Sampath Rangarajan

    IPC: H04L12/26 ,  H04W40/00

    CPC classification number: H04L12/1881 ,  H04B7/15592 ,  H04L12/189 ,  H04L47/10 ,  H04W72/005 ,  H04W72/082 ,  H04W84/047

    Abstract: Methods and systems for transmitting multicast data in a wireless relay network are described. A tradeoff between the benefits of relay cooperation and session multiplexing can be addressed through careful association of relay stations for resource allocation purposes to maximize the total system throughput. In addition, various complex and greedy scheduling procedures that are based on the distributed pet mutation model and the contiguous permutation model are also described.

    Abstract translation: 描述了在无线中继网络中传输组播数据的方法和系统。 中继协议和会话多路复用的优点之间的折衷可以通过中继站的仔细关联来解决，用于资源分配目的，以最大限度地提高总系统吞吐量。 此外，还描述了基于分布式宠物突变模型和连续置换模型的各种复杂和贪心调度程序。

    Method and a system of video multicast scheduling
    17.
    发明授权
    Method and a system of video multicast scheduling 有权
    视频组播调度的方法和系统

    公开(公告)号：US08537738B2

    公开(公告)日：2013-09-17

    申请号：US13287779

    申请日：2011-11-02

    Applicant: Karthikeyan Sundaresan

    Inventor： Karthikeyan Sundaresan

    IPC: H04H20/71 ,  H04J3/26 ,  H04L12/28 ,  H04L12/56 ,  H04N7/173 ,  H04N11/02 ,  G06F15/16 ,  H04B3/00 ,  H04B1/66

    CPC classification number: H04N21/6405 ,  H04H20/18 ,  H04H20/33

    Abstract: Methods and systems for scheduling multicast transmissions that includes scheduling layered data for one or more multicast transmissions across a plurality of sub-channels using multi-resolution modulation. The sub-channels for each transmission may have diverse or uniform capacities. Scheduling includes allocating sub-channels to the layers of the layered data.

    Abstract translation: 用于调度多播传输的方法和系统，其包括使用多分辨率调制来跨多个子信道调度用于一个或多个多播传输的分层数据。 每个传输的子信道可以具有多种或均匀的容量。 调度包括将子信道分配给分层数据的层。

    Beamforming methods and systems employing measured power at a receiver to perform channel estimation
    18.
    发明授权
    Beamforming methods and systems employing measured power at a receiver to perform channel estimation 有权
    波束成形方法和在接收机处采用测量功率进行信道估计的系统

    公开(公告)号：US08380133B2

    公开(公告)日：2013-02-19

    申请号：US12724513

    申请日：2010-03-16

    Applicant: Sriram Lakshmanan ,  Karthikeyan Sundaresan

    Inventor： Sriram Lakshmanan ,  Karthikeyan Sundaresan

    IPC: H04B15/00 ,  H04B17/00

    CPC classification number: H04B7/0617 ,  H04B7/0691 ,  H04B7/0874 ,  H04B17/21

    Abstract: Beamforming methods and systems are described in which differential channel estimation can be computed based on measured power at receiver. Simultaneous activation of antennas in separate pairs can be used to determine relative phases of antennas with respect to a reference antenna based on the power measurements. In turn, the beam forming signals can be weighted in accordance with the relative phases to adapt the signals to a multipath environment. Existing power measurement capabilities of conventional receivers can be employed to achieve approximate channel estimates.

    Abstract translation: 描述波束形成方法和系统，其中可以基于接收机处的测量功率来计算差分信道估计。 基于功率测量，可以同时激活分立的天线对天线相对于参考天线的相对相位。 反过来，波束形成信号可以根据相对相位加权，以将信号适配到多路径环境。 常规接收机的现有功率测量功能可用于实现近似信道估计。

    Systems and methods for leveraging spatial reuse in OFDMA relay networks
    19.
    发明授权
    Systems and methods for leveraging spatial reuse in OFDMA relay networks 有权
    在OFDMA中继网络中利用空间重用的系统和方法

    公开(公告)号：US08218472B2

    公开(公告)日：2012-07-10

    申请号：US12388398

    申请日：2009-02-18

    Applicant: Karthikeyan Sundaresan

    Inventor： Karthikeyan Sundaresan

    IPC: H04B7/14 ,  H04W4/00

    CPC classification number: H04W72/1231 ,  H04B7/2606 ,  H04L5/0037 ,  H04W72/04 ,  H04W84/047 ,  H04W88/04

    Abstract: Systems and methods for scheduling transmission that leverages both diversity and spatial reuse gains in the presence of finite user buffers in a two-hop wireless relay setting are disclosed. The system includes partitioning a set of relays to enable spatial reuse while accounting for half-duplex nature of relays, and assigning and reusing of channels to the relays (and associated users) in the two partitions to maximize the aggregate system throughput while ensuring proportional fairness.

    Abstract translation: 公开了用于在两跳无线中继设置中存在有限用户缓冲器的情况下利用分集和空间重用增益的调度传输的系统和方法。 该系统包括划分一组中继以实现空间重用，同时考虑中继的半双工性质，以及分配和重用两个分区中的中继（和关联用户）的信道，以最大限度地提高总体系统吞吐量同时确保比例公平性 。

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