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184 条记录 (耗时 0.03 秒)

    Methods and apparatus for scaling transmit power of signals in wireless communications
    121.
    发明授权
    Methods and apparatus for scaling transmit power of signals in wireless communications 有权
    用于缩放无线通信中信号发射功率的方法和装置

    公开(公告)号：US08934353B2

    公开(公告)日：2015-01-13

    申请号：US12575942

    申请日：2009-10-08

    申请人： Junyi Li ,  Saurabh Tavildar ,  Aleksandar Jovicic ,  Thomas Richardson

    发明人： Junyi Li ,  Saurabh Tavildar ,  Aleksandar Jovicic ,  Thomas Richardson

    IPC分类号： H04W52/04 ,  H04W52/50 ,  H04W52/24 ,  H04W52/38

    CPC分类号： H04W52/50 ,  H04W52/242 ,  H04W52/38

    摘要： Methods and apparatus of varying transmit power of signals for increasing system throughput and spectral reuse in an unlicensed spectrum are disclosed. One method includes transmitting from a first mobile device to a second mobile device a request to send (RTS) signal having a first transmit data power level based on a channel gain between the first mobile device and the second mobile device, receiving, at the first mobile device, a clear to send (CTS) signal from the second mobile device, and transmitting data at the first transmit data power level from the first mobile device to the second mobile device.

    摘要翻译： 公开了改变信号发射功率以提高未许可频谱中的系统吞吐量和频谱重用的方法和装置。 一种方法包括：基于第一移动设备和第二移动设备之间的信道增益，从第一移动设备向第二移动设备发送具有第一发送数据功率电平（RTS）信号的请求，在第一移动设备 移动设备，来自第二移动设备的清晰发送（CTS）信号，以及以第一传输数据功率级从第一移动设备向第二移动设备发送数据。

    Mitigating interference in a communication network
    122.
    发明授权
    Mitigating interference in a communication network 有权
    减轻通信网络中的干扰

    公开(公告)号：US08229369B2

    公开(公告)日：2012-07-24

    申请号：US12434368

    申请日：2009-05-01

    申请人： Junyi Li ,  Saurabh Tavildar ,  Rajiv Laroia ,  Thomas Richardson

    发明人： Junyi Li ,  Saurabh Tavildar ,  Rajiv Laroia ,  Thomas Richardson

    IPC分类号： H04B1/44

    CPC分类号： H04L1/0045 ,  H04L1/20 ,  H04L1/201 ,  H04L5/0007 ,  H04L5/0033 ,  H04L5/0058

    摘要： Aspects relate to mitigating interference in a communication network that does not employ a centralized scheduler. A transmission sent on a subset of resources is evaluated to determine a number of communication pairs that have selected that subset of resources on which to transmit. If there are a large number of communication pairs transmitting on that subset, the transmission is ignored by a receiving device. The number of degrees of freedom that contain energy on the subset is evaluated to determine if an expected number of degrees of freedom that should have energy is met or exceeded. If the expected threshold number is met or exceed, the transmission is decoded by the receiving device, else the transmission is not decoded.

    摘要翻译： 方面涉及减轻不采用集中式调度器的通信网络中的干扰。 评估在资源子集上发送的传输，以确定已经选择要发送的资源子集的多个通信对。 如果在该子集上有大量的通信对传输，则传输被接收设备忽略。 评估在子集上含有能量的自由度的数量，以确定是否满足或超过应具有能量的预期自由度数。 如果满足或超过预期阈值数，则传输由接收​​设备解码，否则传输不被解码。

    METHOD OF REDUCING INTERFERENCE
    126.
    发明申请
    METHOD OF REDUCING INTERFERENCE 失效
    减少干扰的方法

    公开(公告)号：US20090129488A1

    公开(公告)日：2009-05-21

    申请号：US11944197

    申请日：2007-11-21

    申请人： Rajiv Laroia ,  Sundeep Rangan ,  Junyi Li ,  Thomas Richardson ,  Saurabh Tavildar

    发明人： Rajiv Laroia ,  Sundeep Rangan ,  Junyi Li ,  Thomas Richardson ,  Saurabh Tavildar

    IPC分类号： H04B1/10 ,  H04L27/28

    CPC分类号： H04L27/2647 ,  H04B1/7103 ,  H04B7/0854 ,  H04B7/0857 ,  H04B2201/70702

    摘要： Various schemes for reducing effects of interference within communication systems are disclosed. A transmitter transmits a signal in a first time interval and a scrambled version of the signal in a second time interval, which does not overlap with the first time interval. A receiver receives a composite signal including a signal transmitted from the desired transmitter as well as signals from interferers in the first or the second time interval. The receiver determines a dominant interferer and obtains knowledge of signal scrambling done by the interferer as well as the desired transmitter by sensing an identification associated with the interferer or the desired transmitter. This knowledge is employed to determine coefficients for combining the received composite signals received in the first and the second time interval in order to recover the desired signal in a manner that maximizes the SNR associated with the desired signal or completely cancels the dominant interference.

    摘要翻译： 公开了用于减少通信系统内的干扰影响的各种方案。 发射机以与第一时间间隔不重叠的第二时间间隔发送第一时间间隔中的信号和信号的加扰版本。 接收机在第一或第二时间间隔中接收包括从所需发射机发送的信号以及来自干扰源的信号的复合信号。 接收机确定主要干扰源，并且通过感测与干扰源或期望发射机相关联的标识来获得由干扰源以及所需发射机完成的信号加扰的知识。 该知识用于确定用于组合在第一和第二时间间隔中接收的接收的复合信号的系数，以便以最大化与期望信号相关联的SNR或完全抵消显性干扰的方式恢复期望信号。

    Methods and apparatus for using a licensed spectrum to transmit a signal when an unlicensed spectrum is congested
    128.
    发明授权
    Methods and apparatus for using a licensed spectrum to transmit a signal when an unlicensed spectrum is congested 有权
    当未许可频谱拥塞时，使用许可频谱来发送信号的方法和装置

    公开(公告)号：US08248996B2

    公开(公告)日：2012-08-21

    申请号：US12510353

    申请日：2009-07-28

    申请人： Junyi Li ,  Saurabh Tavildar ,  Aleksandar Jovicic ,  Thomas Richardson

    发明人： Junyi Li ,  Saurabh Tavildar ,  Aleksandar Jovicic ,  Thomas Richardson

    IPC分类号： H04W4/00

    CPC分类号： H04W74/0816

    摘要： Methods and apparatus of using a licensed spectrum to transmit a signal when an unlicensed spectrum is congested are disclosed. One method includes receiving, at a first mobile device, a request signal from a second mobile device, receiving, at the first mobile device, a remote signal from one or more mobile devices using the unlicensed spectrum, and transmitting a control signal from the first mobile device to the second mobile device using the licensed spectrum, the control signal being based on the remote signal. The control signal carries control information that is based on at least one of a time at which the second mobile device sends a signal to the first mobile device or the received powers of the remote signal and the request signal.

    摘要翻译： 公开了当未授权频谱拥塞时使用许可频谱来发送信号的方法和装置。 一种方法包括在第一移动设备处接收来自第二移动设备的请求信号，在第一移动设备处使用未授权频谱从一个或多个移动设备接收远程信号，以及从第一移动设备发送来自第一移动设备的控制信号 移动设备使用许可频谱的第二移动设备，控制信号基于远程信号。 控制信号携带基于第二移动设备向第一移动设备发送信号的时间或远程信号的接收功率和请求信号中的至少一个的控制信息。

    Methods and apparatus for improving power efficiency and latency of mobile devices using an out of band wireless resource
    129.
    发明授权
    Methods and apparatus for improving power efficiency and latency of mobile devices using an out of band wireless resource 有权
    使用带外无线资源提高移动设备的功率效率和延迟的方法和装置

    公开(公告)号：US08248947B2

    公开(公告)日：2012-08-21

    申请号：US12507578

    申请日：2009-07-22

    申请人： Junyi Li ,  Saurabh Tavildar ,  Aleksandar Jovicic ,  Thomas Richardson

    发明人： Junyi Li ,  Saurabh Tavildar ,  Aleksandar Jovicic ,  Thomas Richardson

    IPC分类号： G01R31/08

    CPC分类号： H04W72/085 ,  H04W16/14 ,  H04W88/06 ,  Y02D70/142 ,  Y02D70/164

    摘要： Methods and apparatus of using a licensed spectrum to transmit data when an unlicensed spectrum is congested are disclosed. The method includes transmitting a first signal from a first mobile device to a second mobile device using an unlicensed spectrum, determining, at the first mobile device, whether a first response signal has been received by the first mobile device using the unlicensed spectrum, and transmitting a second signal from the first mobile device to the second mobile device using a licensed spectrum when the first response signal has not been received by the first mobile device using the unlicensed spectrum.

    摘要翻译： 公开了当未许可频谱拥塞时使用许可频谱来发送数据的方法和装置。 该方法包括使用非许可频谱从第一移动设备向第二移动设备发送第一信号，在第一移动设备处确定第一移动设备是否已经使用未许可频谱接收到第一响应信号，并且发送 当第一移动设备未使用未许可频谱接收到第一响应信号时，使用许可频谱从第一移动设备到第二移动设备的第二信号。

    Transmission with hopping for peer-peer communication
    130.
    发明授权
    Transmission with hopping for peer-peer communication 有权
    用于对等通信的跳频传输

    公开(公告)号：US08121097B2

    公开(公告)日：2012-02-21

    申请号：US12264661

    申请日：2008-11-04

    申请人： Junyi Li ,  Saurabh Tavildar ,  Thomas Richardson ,  Ying Wang ,  Aleksandar Jovicic

    发明人： Junyi Li ,  Saurabh Tavildar ,  Thomas Richardson ,  Ying Wang ,  Aleksandar Jovicic

    IPC分类号： H04J3/00 ,  H04B7/212

    CPC分类号： H04W8/005 ,  H04B1/7143 ,  H04B2001/6908 ,  H04L5/0007 ,  H04L5/0032 ,  H04L5/0042 ,  H04W72/02 ,  H04W72/0446

    摘要： Techniques for transmitting signals using time hopping or time and frequency hopping are described. In one design, a terminal selects different slots to use for transmission in multiple frames with time hopping. Each frame includes multiple slots, and each slot covers a particular time duration. The selected slots are at different time locations in the multiple frames. In another design, a terminal selects different resource units to use for transmission in multiple frames with time and frequency hopping. The selected resource units are at different time and frequency locations in the multiple frames. For both designs, the terminal sends a signal (e.g., a peer discovery signal) in the selected slots or resource units in the multiple frames. The terminal may detect for signals (e.g., peer discovery signals) from other terminals in slots not used for transmission by the terminal.

    摘要翻译： 描述了使用跳时或时间和跳频来发送信号的技术。 在一种设计中，终端选择不同的时隙用于在具有时间跳跃的多个帧中进行传输。 每个帧包括多个时隙，并且每个时隙覆盖特定的持续时间。 所选择的时隙位于多个帧中的不同时间位置。 在另一种设计中，终端选择不同的资源单元用于在具有时间和跳频的多个帧中进行传输。 所选择的资源单元在多个帧中处于不同的时间和频率位置。 对于这两种设计，终端在多个帧中的所选择的时隙或资源单元中发送信号（例如，对等体发现信号）。 终端可以在不用于由终端发送的时隙中检测来自其他终端的信号（例如，对等体发现信号）。