公开(公告)号：US20050181795A1

公开(公告)日：2005-08-18

申请号：US11075983

申请日：2005-03-10

申请人： Brian Mark ,  Alexe Leu

发明人： Brian Mark ,  Alexe Leu

IPC分类号： H04W36/08 ,  H04W36/18 ,  H04W36/32 ,  H04Q7/20

CPC分类号： H04W36/32 ,  H04W36/18 ,  H04W36/30

摘要： Disclosed is a cellular network handoff decision mechanism which comprising the steps of: determining a sampling interval using a carrier wavelength; determining a local averaging interval that is larger than the sampling interval; determining a handoff decision interval that is larger than the local averaging interval; selecting at least two base stations from a multitude of base stations having a pilot signal from a reference cellular network using a selection criterion; determining a received signal strength from the pilot signal strength for each of the selected base stations once during every sampling interval; calculating a local average signal strength value using each of the received signal strengths once during every local averaging interval; determining an assignment region in which the local average signal strength value lies using a hysteresis range; and calculating a handoff decision once during every handoff decision interval using a handoff calculation.

摘要翻译： 公开了一种蜂窝网络切换判定机制，其包括以下步骤：使用载波波长确定采样间隔; 确定大于采样间隔的局部平均间隔; 确定大于所述局部平均间隔的切换判定间隔; 使用选择标准从具有来自参考蜂窝网络的导频信号的多个基站中选择至少两个基站; 在每个采样间隔期间，每个所选基站的导频信号强度确定接收信号强度; 在每个局部平均间隔期间使用每个接收信号强度一次计算局部平均信号强度值; 使用滞后范围确定局部平均信号强度值所在的分配区域; 以及使用切换计算在每个切换判定间隔期间计算一次切换决定。

公开(公告)号：US20070263566A1

公开(公告)日：2007-11-15

申请号：US11432536

申请日：2006-05-12

申请人： Mark McHenry ,  Alexe Leu

发明人： Mark McHenry ,  Alexe Leu

IPC分类号： H04Q7/00

CPC分类号： H04W16/14 ,  H04W24/10 ,  H04W72/00

摘要： A method and transceiver for determining spectrum availability within a give area is disclosed. The given area includes cells in a grid. A belief evaluator receives a measurement from a signal and assigns an instantaneous belief indicator, an instantaneous disbelief indicator and an instantaneous ignorance indicator based on a detection threshold and the power level of the measurement. The indicators quantify the probability of a presence of a transmitter within the grid cell. A belief accumulator uses the instantaneous indicators along with accumulated belief, disbelief and ignorance indicators from previous measurements to determine cumulative belief, disbelief and ignorance indicators. The accumulated belief, disbelief and ignorance indicators are the results of previous measurements and belief/disbelief/ignorance determinations for the grid cell. An allocator indicates the status of the grid cell and whether a spectrum is available. If a spectrum is available, then the grid cell is added to other available cells within the area to generate the spectrum hole.

摘要翻译： 公开了一种在给定区域内确定频谱可用性的方法和收发器。 给定区域包括网格中的单元格。 信念评估器从信号接收测量值，并根据检测阈值和测量的功率电平分配瞬时信念指示符，瞬时不信指示符和瞬时无知指示符。 指标量化网格单元内发射机的存在概率。 信念累加器使用瞬时指标以及以前测量中累积的信念，怀疑和无知指标来确定累积信念，怀疑和无知指标。 积累的信念，怀疑和无知指标是以前的测量和信念/不信/无知确定网格单元的结果。 分配器指示网格单元的状态以及光谱是否可用。 如果光谱可用，则网格单元被添加到该区域内的其他可用单元以产生光谱孔。