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    Scheduling in multi-cell multi-carrier wireless systems
    22.
    发明授权
    Scheduling in multi-cell multi-carrier wireless systems 有权
    在多小区多载波无线系统中进行调度

    公开(公告)号：US08023455B2

    公开(公告)日：2011-09-20

    申请号：US12237993

    申请日：2008-09-25

    申请人： Honghai Zhang ,  Sampath Rangarajan

    发明人： Honghai Zhang ,  Sampath Rangarajan

    IPC分类号： H04W4/00 ,  H04J11/00

    CPC分类号： H04L5/0046 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/006 ,  H04W72/1231 ,  H04W72/1252

    摘要： Transmission is scheduled in a multi-cell multi-carrier wireless network. Assignments are determined for subcarriers by determining marginal gains for receivers, determining a receiver and an associated base station corresponding to a highest marginal gain, and assigning the receiver to the base station. These steps may be iteratively repeated until each of the receivers is assigned to a base station. The subcarriers are then allocated to the receivers by selecting the receiver with the highest gain. Alternatively, assignments are determined for subcarriers by determining a maximum additional queue size reduction, determining an assignment for each of the subcarriers, determining a receiver associated with a base station that has the determined maximum additional queue size reduction, assigning the receiver to the base station, and allocating the subcarriers to the receivers in the base stations.

    摘要翻译： 传输被安排在多小区多载波无线网络中。 通过确定接收机的边际增益，确定对应于最高边际增益的接收机和相关联的基站，以及将接收机分配给基站，为子载波确定分配。 可以迭代地重复这些步骤，直到每个接收机被分配给基站。 然后通过选择具有最高增益的接收机将副载波分配给接收机。 或者，通过确定最大附加队列大小减少来确定子载波的分配，确定每个子载波的分配，确定与具有确定的最大附加队列大小减小的基站相关联的接收机，将接收机分配给基站 并将子载波分配给基站中的接收机。

    UTILITY OPTIMIZATION FOR SCALABLE VIDEO MULTICAST IN WIRELESS SYSTEMS
    24.
    发明申请
    UTILITY OPTIMIZATION FOR SCALABLE VIDEO MULTICAST IN WIRELESS SYSTEMS 审中-公开
    无线系统中可扩展视频多播的实用优化

    公开(公告)号：US20100269142A1

    公开(公告)日：2010-10-21

    申请号：US12696703

    申请日：2010-01-29

    申请人： Peilong Li ,  Honghai Zhang ,  Sampath Rangarajan

    发明人： Peilong Li ,  Honghai Zhang ,  Sampath Rangarajan

    IPC分类号： H04N7/16 ,  H04H20/71 ,  H04W72/04

    CPC分类号： H04N21/6405 ,  H04H20/42 ,  H04H20/72 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0086 ,  H04L2001/0093 ,  H04N21/234327 ,  H04N21/41407 ,  H04N21/6112 ,  H04W4/06 ,  H04W48/16 ,  H04W72/04 ,  H04W76/10

    摘要： The present invention provides a system and method for optimizing utility in a wireless data system. A connection is first established with a plurality of receiver devices. After the connection has been established, feedback is received from the receiver devices at periodic intervals, wherein the feedback includes channel quality information. A map is computed for each of a plurality of modulation and coding schemes (MCSs) using the received feedback, wherein the map associated with each MCS reflects the set of receiver devices capable of receiving that particular MCS. Once the MCSs have been mapped, one of the MCSs is assigned to each of a plurality of variable-sized layers of at least one video session for optimizing total system utility. If the wireless system has multiple sessions, resources are also allocated among the different sessions in a manner which further optimizes system utility.

    摘要翻译： 本发明提供了一种用于优化无线数据系统中的效用的系统和方法。 首先用多个接收机设备建立连接。 在连接建立之后，以周期性间隔从接收机设备接收反馈，其中反馈包括信道质量信息。 使用接收到的反馈为多个调制和编码方案（MCS）中的每一个计算地图，其中与每个MCS相关联的映射反映能够接收该特定MCS的接收机设备的集合。 一旦已经映射了MCS，则将一个MCS分配给至少一个视频会话的多个可变大小的层中的每一个，以优化总体系统效用。 如果无线系统具有多个会话，则在不同会话之间分配资源也可以进一步优化系统效用。

    Multicast Video and Data Delivery With Beamforming Antennas in Indoor Wireless Networks
    27.
    发明申请
    Multicast Video and Data Delivery With Beamforming Antennas in Indoor Wireless Networks 有权
    多播视频和数据传输与室内无线网络中的波束形天线

    公开(公告)号：US20120030716A1

    公开(公告)日：2012-02-02

    申请号：US13193657

    申请日：2011-07-29

    申请人： Honghai Zhang ,  Yuanxi Jiang ,  Sampath Rangarajan

    发明人： Honghai Zhang ,  Yuanxi Jiang ,  Sampath Rangarajan

    IPC分类号： H04N7/18

    CPC分类号： H04W84/12 ,  H04B7/2662 ,  H04N21/2223 ,  H04N21/234327 ,  H04N21/43615 ,  H04N21/43637 ,  H04W4/06

    摘要： A method includes receiving input information related to transmission of video and data by an access point in a wireless network, the input information including at least one of setup connections, modulating and coding scheme MCS; receiving, by the access point, channel state each information from each user in the wireless network, the channel state information including signal-to-interference-and-noise-ratio SINR for each user under each beam pattern; and multicast beamform scheduling, responsive to the receiving, for multicast delivery of the video and data from the access point with beamforming antennas, the videos being at least one of a multi-resolution and a multi-layered video, the scheduling including a greedy procedure for selecting beams, assigning MCS and video layer or resolution to each of the beams.

    摘要翻译： 一种方法包括：通过无线网络中的接入点接收与视频和数据的传输相关的输入信息，所述输入信息包括设置连接，调制和编码方案MCS中的至少一个; 由所述接入点接收来自所述无线网络中每个用户的每个信息的信道状态，所述信道状态信息包括每个用户在每个波束图案下的信噪比和噪声比SINR; 以及组播波束形式调度，响应于所述接收，用波束形成天线从所述接入点多播传送所述视频和数据，所述视频是多分辨率和多层视频中的至少一个，所述调度包括贪婪程序 用于选择波束，为每个波束分配MCS和视频层或分辨率。

    SEQUENTIAL SENSING SCHEME FOR COGNITIVE RADIO
    29.
    发明申请
    SEQUENTIAL SENSING SCHEME FOR COGNITIVE RADIO 有权
    用于认知无线电的顺序感测方案

    公开(公告)号：US20110086602A1

    公开(公告)日：2011-04-14

    申请号：US12718422

    申请日：2010-03-05

    申请人： Yan Xin ,  Honghai Zhang ,  Sampath Rangarajan

    发明人： Yan Xin ,  Honghai Zhang ,  Sampath Rangarajan

    IPC分类号： H04B1/18

    CPC分类号： H04B17/336 ,  H04B17/16

    摘要： A method and system for determining whether a given electromagnetic frequency is in use. An incoming signal is sampled and a test statistic is calculated based on the magnitude of the received samples and a predetermined constant. A determination is then made regarding whether the frequency is in use, based on whether the test statistic has exceeded a threshold.

    摘要翻译： 一种用于确定给定电磁频率是否在使用中的方法和系统。 输入信号被采样，并且基于所接收的采样的幅度和预定的常数来计算测试统计量。 然后根据测试统计量是否超过阈值，确定频率是否在使用中。

    Scheduling in Multi-Cell Multi-Carrier Wireless Systems
    30.
    发明申请
    Scheduling in Multi-Cell Multi-Carrier Wireless Systems 有权
    多单元多载波无线系统中的调度

    公开(公告)号：US20090232064A1

    公开(公告)日：2009-09-17

    申请号：US12237993

    申请日：2008-09-25

    申请人： Honghai Zhang ,  Sampath Rangarajan

    发明人： Honghai Zhang ,  Sampath Rangarajan

    IPC分类号： H04W72/04

    CPC分类号： H04L5/0046 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/006 ,  H04W72/1231 ,  H04W72/1252

    摘要： Transmission is scheduled in a multi-cell multi-carrier wireless network. Assignments are determined for subcarriers by determining marginal gains for receivers, determining a receiver and an associated base station corresponding to a highest marginal gain, and assigning the receiver to the base station. These steps may be iteratively repeated until each of the receivers is assigned to a base station. The subcarriers are then allocated to the receivers by selecting the receiver with the highest gain. Alternatively, assignments are determined for subcarriers by determining a maximum additional queue size reduction, determining an assignment for each of the subcarriers, determining a receiver associated with a base station that has the determined maximum additional queue size reduction, assigning the receiver to the base station, and allocating the subcarriers to the receivers in the base stations.

    摘要翻译： 传输被安排在多小区多载波无线网络中。 通过确定接收机的边际增益，确定对应于最高边际增益的接收机和相关联的基站，以及将接收机分配给基站，为子载波确定分配。 可以迭代地重复这些步骤，直到每个接收机被分配给基站。 然后通过选择具有最高增益的接收机将副载波分配给接收机。 或者，通过确定最大附加队列大小减少来确定子载波的分配，确定每个子载波的分配，确定与具有确定的最大附加队列大小减小的基站相关联的接收机，将接收机分配给基站 并将子载波分配给基站中的接收机。