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    System and method for reducing power consumption for wireless communications by mobile devices
    8.
    发明授权
    System and method for reducing power consumption for wireless communications by mobile devices 有权

    公开(公告)号：US07096034B2

    公开(公告)日：2006-08-22

    申请号：US09968380

    申请日：2001-10-01

    申请人： Qian Zhang ,  Wenwu Zhu ,  Ya-Qin Zhang ,  Ji Zhu

    发明人： Qian Zhang ,  Wenwu Zhu ,  Ya-Qin Zhang ,  Ji Zhu

    IPC分类号： H04B7/00 ,  H04Q7/00

    CPC分类号： H04W52/265 ,  H04W52/146 ,  H04W52/20 ,  H04W52/24 ,  H04W52/267 ,  H04W52/54

    摘要： A power control scheme for a wireless network communication system that includes a base station and multiple wireless mobile device dynamically adjusts transmission power of a mobile device in conjunction with adjusting its bit allocation in source coding and channel coding to minimize its total power consumption while maximizing the system capacity in terms of the total effective transmission rates received by the base station. The base station sets a target signal quality value for each mobile station, and the target values are determined by the base station such that the total effective data rate from all the mobile devices is maximized under constraints of the total received power and the error protection level requirements for the mobile devices. The base station periodically measures a signal quality value, such as a signal-to-interference ratio (SIR), from transmissions received by the base from each mobile device, compares it with the measured signal quality value for that mobile device, and sends a control signal instructing the mobile device to increase or decrease its transmission power based on the result of the comparison. When the mobile device receives the control signal, it determines an amount of adjustment to its transmission power by performing a minimum calculation under constraints on the total data distortion and the maximum transmission rate to adjust the parameters for source coding, channel coding, and transmission under the constraints to result in a redistribution of power between the components that provides the minimized total power consumption.

    Architecture and related methods for streaming media content through heterogeneous networks
    10.
    发明授权
    Architecture and related methods for streaming media content through heterogeneous networks 有权
    通过异构网络流媒体内容的架构和相关方法

    公开(公告)号：US07454527B2

    公开(公告)日：2008-11-18

    申请号：US09848706

    申请日：2001-05-02

    申请人： Qian Zhang ,  Wenwu Zhu ,  Ya-Qin Zhang ,  Fan Yang

    发明人： Qian Zhang ,  Wenwu Zhu ,  Ya-Qin Zhang ,  Fan Yang

    IPC分类号： G06F15/16

    CPC分类号： H04L69/16 ,  H04L29/06 ,  H04L29/06027 ,  H04L65/1026 ,  H04L65/1036 ,  H04L65/4084 ,  H04L69/161 ,  H04L69/163 ,  H04L69/22 ,  H04L69/326 ,  H04W4/00 ,  H04W28/18 ,  H04W76/10 ,  H04W88/16

    摘要： A system for content (e.g., streaming media) is presented comprising a server, to provide media content on request through a wireline network, coupled to a wireless host through a network gateway. The network gateway establishes a communication channel from the server to the wireless host through both a wireline network and a wireless network, wherein the communication channel includes a transport layer protocol with control parameters for network elements of each of the wireline network and the wireless network. This abstract itself is not intended to limit the scope of this patent. The scope of the present invention is pointed out in the appending claims.

    摘要翻译： 呈现用于内容（例如，流媒体）的系统，其包括服务器，以通过有线网络请求提供媒体内容，通过网络网关耦合到无线主机。 网络网关通过有线网络和无线网络建立从服务器到无线主机的通信信道，其中通信信道包括具有用于有线网络和无线网络中的每一个的网络元件的控制参数的传输层协议。 本摘要本身并不旨在限制本专利的范围。 在所附权利要求中指出了本发明的范围。