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    • 7. 发明公开
    • METHOD FOR DETERMINING WHITE SPACE INTERFERENCE MARGIN
    • 确定白色空间干扰边缘的方法
    • EP2684401A1
    • 2014-01-15
    • EP11715304.9
    • 2011-03-11
    • Telefonaktiebolaget L M Ericsson (PUBL)
    • KRONANDER, JonasSELÉN, Yngve
    • H04W52/28H04W52/34H04W52/24
    • H04W52/28H04W52/243H04W52/283H04W52/343
    • The disclosure relates to a network node of a wireless network, and to a related method for determining a margin of an interference level. The network node controls at least one white space device, and the interference level is associated with a critical position and a channel available for secondary usage by the at least one white space device. The method comprises the following steps: (a) initializing (410) the margin; (b) determining (420) a transmit power level for the at least one white space device when transmitting on the channel available for secondary usage, based on the interference level with the margin added; (c) calculating (430) a probability that an aggregated interference from the at least one white space device at the critical position exceeds the interference level, based on the determined transmit power level and a channel model uncertainty; and (d) modifying (440) the margin of the interference level if the calculated probability falls outside of a probability interval. The method also comprises iterating the steps (b), (c), and (d) until the calculated probability falls within the probability interval.
    • 本公开涉及无线网络的网络节点,并且涉及用于确定干扰水平的余量的相关方法。 网络节点控制至少一个空白区设备,并且干扰级与可用于由至少一个空白区设备二次使用的关键位置和信道相关联。 该方法包括以下步骤:(a)初始化(410)余量; (b)基于干扰水平和所添加的余量,在可用于二次使用的信道上进行传输时,确定(420)所述至少一个空白频段设备的传输功率水平; (c)基于所确定的发射功率电平和信道模型不确定性来计算(430)来自所述至少一个空白频段设备在所述关键位置处的聚集干扰超过所述干扰电平的概率; 和(d)如果所计算的概率落在概率间隔之外,则修改(440)干扰水平的余量。 该方法还包括迭代步骤(b),(c)和(d),直到所计算的概率落入概率区间内。