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1. 发明申请

US20040203474A1 Systems and Methods for Interference Mitigation With Respect to Periodic Interferers in Short-Range Wireless Applications 失效
标题翻译：针对短距离无线应用中的周期干扰器进行干扰减轻的系统和方法
公开(公告)号：US20040203474A1
公开(公告)日：2004-10-14
申请号：US10248434
申请日：2003-01-20
申请人： COGNIO, INC.
发明人： Karl A. Miller , David S. Kloper , Neil R. Diener
IPC分类号： H04B001/10 , H04B015/00 , H04B001/00 , H04B007/00
CPC分类号： H04L1/0001 , H04B1/713
摘要： Several techniques are provided for use by wireless devices to avoid interference with signals that are of a periodic or quasi-periodic nature that may operate in the same frequency band and proximity. In some cases, the periodic signals are detected and their timing is determined so as to predict when a next interfering event will occur. Devices that are affected by the periodic signal (such as an affected device with information to be transmitted or devices that have information to be transmitted to the affected device) are controlled to prevent transmissions during the interfering intervals. In addition, a process is provided to dynamically fragment a transmit frame of information to transmit part of the information before the interfering interval and the remainder of the information after the interfering interval, rather than waiting to transmit the entire frame until after the interfering interval. Moreover, techniques are provided to correct for clock drift between the periodic signal and a device affected by the periodic signal, as well as for clock drift between a device affected by the periodic signal and other devices that communicate with that device. These techniques prevent interference with periodic signals and in so doing, improve the quality of service of the communication link for both the interfering devices and the other devices.
摘要翻译：提供了若干技术以供无线设备使用以避免对可能在相同频带和接近度中操作的具有周期性或准周期性质的信号的干扰。在某些情况下，检测周期信号并确定其定时，以便预测下一个干扰事件将何时发生。被周期性信号影响的设备（例如具有要发送的信息的受影响设备或具有要发送到受影响设备的信息的设备）被控制以防止在干扰间隔期间的传输。此外，提供了一种处理，以动态地分割信息的发送帧，以在干扰间隔之前的信息的间隔和信息的干扰间隔之后传送信息的一部分，而不是等待发送整个帧直到干扰间隔之后。此外，提供技术来校正周期性信号和受周期信号影响的器件之间的时钟漂移，以及在受周期信号影响的器件与与该器件通信的其他器件之间的时钟漂移。这些技术防止对周期性信号的干扰，并且这样做可以提高干扰设备和其他设备的通信链路的服务质量。

2. 发明申请

US20040137849A1 Mitigating Interference With Frequency Hopping Signals By Deriving Future Hop Frequencies 有权
标题翻译：通过派生未来跳频减少对跳频信号的干扰
公开(公告)号：US20040137849A1
公开(公告)日：2004-07-15
申请号：US10707790
申请日：2004-01-13
申请人： COGNIO, INC.
发明人： David S. Kloper , Neil R. Diener
IPC分类号： H04B001/00 , H04B007/00
CPC分类号： H04B1/715 , H04B2001/7154
摘要： Techniques to avoid interference with a frequency hopping signal that are of a periodic or quasi-periodic nature that may operate in the same frequency band and proximity with other devices. For example, the frequency hopping signals may be transmitted by Bluetooth devices operating in the same frequency band as IEEE 802.11 WLAN devices. When a frequency hopping interfering signal is detected, sufficient knowledge of the frequency hopping sequence is derived without obtaining state of a frequency hop sequence from information carried in the frequency hopping signal. This knowledge is used to predict or determine when future transmissions of the frequency hopping signal will be present in a particular frequency channel of concern. Using knowledge of future hop frequencies, operating parameters of a communication device or network can be adjusted to mitigate interference with the frequency hopping signal only at times when the frequency hopping signal will be in a particular frequency channel or channels of interest.
摘要翻译：避免干扰具有周期性或准周期性质的跳频信号的技术，其可以在与其他设备相同的频带中工作，并且与其他设备接近。例如，跳频信号可以由与IEEE 802.11 WLAN设备相同频带工作的蓝牙设备来传输。当检测到跳频干扰信号时，不需要从跳频信号中携带的信息中获得跳频序列的状态，便可获得足够的跳频序列知识。该知识用于预测或确定何时将跳频信号的将来传输存在于特定的频道中。使用对未来跳频的知识，可以调整通信设备或网络的操作参数，以便仅在跳频信号处于特定频率信道或感兴趣的信道时才能减轻与跳频信号的干扰。

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