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DETERMINATION METHOD AND SYSTEM FOR A CONTENTION WINDOW IN AN ADAPTIVE BACKOFF ALGORITHM
DETERMINATION METHOD AND SYSTEM FOR A CONTENTION WINDOW IN AN ADAPTIVE BACKOFF ALGORITHM
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机译：自适应退避算法中延展窗口的确定方法和系统
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摘要
The present invention is suitable for use in the technical field of electronic communications and provides a determination method and system for a contention window (CW) in an adaptive backoff algorithm. The method comprises the following steps: step A: initializing a system, and initializing the value of the CW to be a system default value CWmin; step B: recording channel state and combining with historical channel state, and updating the CW value on the basis of the system default value of step A; step C: obtaining a backoff time slot by means of the updated CW value, obtaining, during said backoff time slot, channel utilization, and further obtaining transmission probability according to channel utilization; step D: obtaining a contention window change factor, then determining the CW according to the CW change factor and the transmission probability. The present invention obtains an optimized value of a contention window change factor by means of considering addition of new variable channel utilization, and dynamically adjusts by means of the magnitude of the ratio of conflict occurring during the last backoff, thus the change factor obtained is changed, and the contention window is also dynamically adjusted.
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机译：本发明适用于电子通信技术领域，并提供了一种用于自适应退避算法中的竞争窗口（CW）的确定方法和系统。该方法包括以下步骤：步骤A：初始化系统，并将CW的值初始化为系统默认值CW min 。步骤B：记录频道状态并结合历史频道状态，并根据步骤A的系统默认值更新CW值;步骤C：利用更新后的CW值获取退避时隙，在所述退避时隙中获取信道利用率，并根据信道利用率进一步获取传输概率;步骤D：获取竞争窗口变化因子，然后根据CW变化因子和传输概率确定CW。本发明通过考虑增加新的可变信道利用率来获得竞争窗口改变因子的最佳值，并通过在上一次退避期间发生的冲突比率的大小来动态地进行调整，从而改变获得的改变因子。 ，竞争窗口也会动态调整。
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