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    • 1. 发明授权
    • Cellular wireless LAN with frequency division multiplex in TV white space
    • 蜂窝无线局域网在电视空白区域进行频分复用
    • US08594120B2
    • 2013-11-26
    • US13045268
    • 2011-03-10
    • Stefan MangoldRoberto AielloMarkus GrossThomas Gross
    • Stefan MangoldRoberto AielloMarkus GrossThomas Gross
    • H04L12/413
    • H04W74/08H04B1/0475H04B1/1027H04L5/0005H04L5/0053H04L5/143H04W16/14H04W24/00H04W28/04H04W84/12H04W84/18
    • Systems, methods, and devices for operating a multiplex wireless local area network using separated uplink and downlink channels in the 802.11 and television white space (TVWS) spectra are disclosed. Opportunistic detection and use of available TVWS frequency channels allows for fixed and mobile wireless devices to more efficiently use the available wireless bandwidth. By using separated uplink and downlink channels, a fixed wireless device can listen to incoming uplink frames from other mobile and fixed wireless devices and monitor for uplink frame collisions. In the event of an uplink frame collision, the fixed wireless device can immediately send a stop frame in the downlink channel to all involved wireless devices to avoid lost channel time due to the delay caused by most acknowledgement-based collision recovery protocols. Similarly, communicating mobile and fixed wireless devices can transmit and receive data frames in both directions simultaneously.
    • 公开了在802.11和电视空白(TVWS)频谱中使用分离的上行链路和下行链路信道操作多路复用无线局域网的系统,方法和装置。 机会检测和使用可用的TVWS频道允许固定和移动无线设备更有效地使用可用的无线带宽。 通过使用分离的上行链路和下行链路信道,固定无线设备可以监听来自其他移动和固定无线设备的传入上行链路帧,并监视上行链路帧冲突。 在上行链路帧冲突的情况下,固定无线设备可以立即向所有相关的无线设备发送下行链路信道中的停止帧,以避免由于大多数基于确认的冲突恢复协议引起的延迟导致的信道时间丢失。 类似地,通信移动和固定无线设备可以同时在两个方向上发送和接收数据帧。
    • 2. 发明申请
    • Cellular Wireless LAN with Frequency Division Multiplex in TV White Space
    • 蜂窝无线局域网与电视白色空间中的频分复用
    • US20110222493A1
    • 2011-09-15
    • US13045268
    • 2011-03-10
    • Stefan MangoldRoberto AielloMarkus Gross
    • Stefan MangoldRoberto AielloMarkus Gross
    • H04W72/04
    • H04W74/08H04B1/0475H04B1/1027H04L5/0005H04L5/0053H04L5/143H04W16/14H04W24/00H04W28/04H04W84/12H04W84/18
    • Systems, methods, and devices for operating a multiplex wireless local area network using separated uplink and downlink channels in the 802.11 and television white space (TVWS) spectra are disclosed. Opportunistic detection and use of available TVWS frequency channels allows for fixed and mobile wireless devices to more efficiently use the available wireless bandwidth. By using separated uplink and downlink channels, a fixed wireless device can listen to incoming uplink frames from other mobile and fixed wireless devices and monitor for uplink frame collisions. In the event of an uplink frame collision, the fixed wireless device can immediately send a stop frame in the downlink channel to all involved wireless devices to avoid lost channel time due to the delay caused by most acknowledgement-based collision recovery protocols. Similarly, communicating mobile and fixed wireless devices can transmit and receive data frames in both directions simultaneously.
    • 公开了在802.11和电视空白(TVWS)频谱中使用分离的上行链路和下行链路信道操作多路复用无线局域网的系统,方法和装置。 机会检测和使用可用的TVWS频道允许固定和移动无线设备更有效地使用可用的无线带宽。 通过使用分离的上行链路和下行链路信道,固定无线设备可以监听来自其他移动和固定无线设备的传入上行链路帧,并监视上行链路帧冲突。 在上行链路帧冲突的情况下,固定无线设备可以立即向所有相关的无线设备发送下行链路信道中的停止帧,以避免由于大多数基于确认的冲突恢复协议引起的延迟导致的信道时间丢失。 类似地,通信移动和固定无线设备可以同时在两个方向上发送和接收数据帧。
    • 6. 发明授权
    • Method and system for the allocation of UWB transmission based on spectrum opportunities
    • 基于频谱机会分配UWB传输的方法和系统
    • US07650126B2
    • 2010-01-19
    • US10599749
    • 2005-04-04
    • Dagnachew BirruStefan MangoldKiran ChallapaliJavier Del Prado Pavon
    • Dagnachew BirruStefan MangoldKiran ChallapaliJavier Del Prado Pavon
    • H04B17/00H04B1/00H04B15/00
    • H04W16/06H04B1/71632H04B1/719H04W16/14
    • A method and system for efficiently utilizing frequency spectrum resources is disclosed. The method comprises the steps of determining at least one spectrum opportunity (510), wherein the opportunity is identified by a frequency range and a time duration, determining a set of altered transmission characteristics (515, 517) to allow transmission of a desired signal in the identified frequency range, wherein the altered transmission characteristics avoid interference with signals expected in the frequency range, and transmitting said desired signal using the altered transmission characteristics when the transmission occurs during said time duration. In one aspect of the system, the step of determining at least one opportunity comprises the steps of receiving signals in known frequency ranges, and determining the characteristics of the received signals. The system comprises a receiving unit (1001) for receiving information items regarding at least one receivable signal, a processing unit (862) for determining characteristics of the at least one received signal, a managing unit (864) for altering transmission characteristics of a desired signal based on the determined received signal characteristics, wherein the altered transmission characteristics avoid interference with the received signals and a transmission unit (866) receiving said altered transmission characteristics to transmit said desired signal. In one aspect, the desired signal transmission characteristics are altered in a frequency range/time period to avoid interference with received signals in the frequency range.
    • 公开了一种有效利用频谱资源的方法和系统。 该方法包括以下步骤:确定至少一个频谱机会(510),其中通过频率范围和持续时间识别机会,确定一组改变的传输特性(515,517),以允许传输期望信号 所述识别的频率范围,其中所述改变的传输特性避免对在所述频率范围内期望的信号的干扰,并且当在所述持续时间期间发生传输时,使用改变的传输特性来发送所述期望信号。 在系统的一个方面,确定至少一个机会的步骤包括以下步骤:接收已知频率范围内的信号,并确定接收到的信号的特性。 该系统包括用于接收关于至少一个可接收信号的信息项的接收单元(1001),用于确定所述至少一个接收信号的特性的处理单元(862),用于改变所需接收信号的传输特性的管理单元(864) 基于所确定的接收信号特性的信号,其中所述改变的传输特性避免对接收到的信号的干扰;以及发送单元(866),接收所述改变的传输特性以发送所述期望信号。 在一个方面,期望的信号传输特性在频率范围/时间段内改变,以避免在频率范围内对接收信号的干扰。