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    INTEGRATED SCHEDULING OF UNICAST AND MULTICAST TRAFFIC IN RELAY-ENABLED WIRELESS NETWORKS
    31.
    发明申请
    INTEGRATED SCHEDULING OF UNICAST AND MULTICAST TRAFFIC IN RELAY-ENABLED WIRELESS NETWORKS 有权
    在继电式无线网络中的UNICAST和多媒体业务的集成调度

    公开(公告)号：US20090201889A1

    公开(公告)日：2009-08-13

    申请号：US12368287

    申请日：2009-02-09

    Applicant: Karthikeyan Sundaresan ,  Sampath Rangarajan

    Inventor： Karthikeyan Sundaresan ,  Sampath Rangarajan

    IPC: H04W72/12 ,  H04J3/00

    CPC classification number: H04W72/1257 ,  H04B7/026 ,  H04B7/0689 ,  H04B7/2606 ,  H04L5/0007 ,  H04W84/047

    Abstract: A wireless network with integrated scheduling of unicast and multicast users in a relay-enabled two-hop wireless network is disclosed. In this system, users with finite buffers are considered and scheduled over multiple channels in an OFDMA-based wireless network. The gain-specific and efficient scheduling system helps leverage diversity and spatial reuse gains from these networks. The system is applicable to both unicast and multicast traffic and leverages diversity and spatial reuse gains simultaneously to optimize the target network with both unicast and multicast flows. The integrated scheduling system strikes a good balance in delivering efficient performance to unicast and multicast flows.

    Abstract translation: 公开了一种在具有中继功能的双跳无线网络中的单播和组播用户的集成调度的无线网络。 在该系统中，在基于OFDMA的无线网络中，通过多个信道考虑并调度有限缓冲区的用户。 增益特定且高效的调度系统有助于利用这些网络的多样性和空间重用增益。 该系统适用于单播和组播流量，同时利用分集和空间重用增益来优化单播和组播流的目标网络。 综合调度系统在向单播和组播流提供高效性能方面取得了很好的平衡。

    Multicast scheduling systems and methods for leveraging cooperation gains in relay networks
    33.
    发明授权
    Multicast scheduling systems and methods for leveraging cooperation gains in relay networks 有权
    组播调度系统和方法，用于利用中继网络中的协作增益

    公开(公告)号：US08537693B2

    公开(公告)日：2013-09-17

    申请号：US12906527

    申请日：2010-10-18

    Applicant: Karthikeyan Sundaresan ,  Sampath Rangarajan

    Inventor： Karthikeyan Sundaresan ,  Sampath Rangarajan

    IPC: G01R31/08

    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。

    FEMTOCELL RESOURCE MANAGEMENT FOR INTERFERENCE MITIGATION
    35.
    发明申请
    FEMTOCELL RESOURCE MANAGEMENT FOR INTERFERENCE MITIGATION 有权
    用于干扰减缓的FEMTOCELL资源管理

    公开(公告)号：US20120230267A1

    公开(公告)日：2012-09-13

    申请号：US13408487

    申请日：2012-02-29

    Applicant: Karthikeyan Sundaresan ,  Mustafa Arslan ,  Jongwon Yoon

    Inventor： Karthikeyan Sundaresan ,  Mustafa Arslan ,  Jongwon Yoon

    IPC: H04W72/04 ,  H04W24/00 ,  H04B15/00

    CPC classification number: H04W72/06 ,  H04W24/10 ,  H04W28/04 ,  H04W28/06 ,  H04W72/00 ,  H04W74/085 ,  H04W84/045

    Abstract: Methods and systems for managing resources in femtocells are disclosed. One method includes transmitting at least one frame including a first zone of resources on which a set of base stations including at least one femtocell base station and base stations that are adjacent to the femtocell base station implement transmission of signals to impose interference. The one or more frames further includes a second zone dedicated for measuring throughput of mobile stations served by the femtocell base station without interference. The mobile stations are categorized by determining throughputs of the mobile stations with interference based on the transmission of signals on the first zone. Resources of at least one additional frame are configured based on the categorization. Further, the additional frame(s) are transmitted in a cell of the femtocell base station in accordance with the configuration.

    Abstract translation: 公开了用于管理毫微微小区资源的方法和系统。 一种方法包括发送包括第一资源区域的至少一个帧，其中包括至少一个毫微微小区基站的一组基站和与毫微微小区基站相邻的基站实现信号的发送以施加干扰。 该一个或多个帧还包括专用于测量由毫微微小区基站服务的移动站的吞吐量而不受干扰的第二区域。 通过基于第一区域上的信号的传输来确定具有干扰的移动站的吞吐量来对移动站进行分类。 基于分类配置至少一个附加帧的资源。 此外，根据该配置，在毫微微小区基站的小区中发送附加帧。

    VIDEO MULTICAST SCHEDULING
    36.
    发明申请
    VIDEO MULTICAST SCHEDULING 有权
    视频多媒体调度

    公开(公告)号：US20120131632A1

    公开(公告)日：2012-05-24

    申请号：US13287779

    申请日：2011-11-02

    Applicant: Karthikeyan Sundaresan

    Inventor： Karthikeyan Sundaresan

    IPC: H04N7/173

    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。

    CHANNEL ESTIMATION METHODS AND SYSTEMS BASED ON POWER MEASUREMENT AT RECEIVERS
    37.
    发明申请
    CHANNEL ESTIMATION METHODS AND SYSTEMS BASED ON POWER MEASUREMENT AT RECEIVERS 有权
    基于接收机功率测量的信道估计方法和系统

    公开(公告)号：US20120087419A1

    公开(公告)日：2012-04-12

    申请号：US12901076

    申请日：2010-10-08

    Applicant: MOHAMMAD A. KHOJASTEPOUR ,  Karthikeyan Sundaresan ,  Sampath Rangarajan

    Inventor： MOHAMMAD A. KHOJASTEPOUR ,  Karthikeyan Sundaresan ,  Sampath Rangarajan

    IPC: H04L27/00

    CPC classification number: H04L25/0208 ,  H04B7/0684 ,  H04L25/0228

    Abstract: Methods and systems that enable the determination of accurate channel estimates by measuring only power values of pilot signal transmissions at a receiver are described. Various measurement procedures that are based on average power measurements or short term, per-symbol measurements can be employed. Furthermore, procedures utilizing adaptive pilots generated with receiver feedback and deterministic pilots generated without receiver feedback are also described.

    Abstract translation: 描述通过仅测量接收机处的导频信号传输的功率值来确定准确的信道估计的方法和系统。 可以采用基于平均功率测量或短期，每符号测量的各种测量程序。 此外，还描述了利用由接收机反馈产生的自适应导频和无接收机反馈产生的确定性导频的程序。

    High Performance and Low Complexity Scheduling Method for Adaptive Resource Usage in OFDMA Wireless Relay Networks
    38.
    发明申请
    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：US20120026932A1

    公开(公告)日：2012-02-02

    申请号：US13192878

    申请日：2011-07-28

    Applicant: Karthikeyan Sundaresan ,  Sampath Rangarajan

    Inventor： Karthikeyan Sundaresan ,  Sampath Rangarajan

    IPC: H04W72/04 ,  H04B7/14

    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。

    BEAMFORMING METHODS AND SYSTEMS EMPLOYING MEASURED POWER AT A RECEIVER TO PERFORM CHANNEL ESTIMATION
    40.
    发明申请
    BEAMFORMING METHODS AND SYSTEMS EMPLOYING MEASURED POWER AT A RECEIVER TO PERFORM CHANNEL ESTIMATION 有权
    采用接收机测量功率的BEAMFORMING方法和系统来执行信道估计

    公开(公告)号：US20100285752A1

    公开(公告)日：2010-11-11

    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。

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