基于可用帶寬測(cè)量的分層組播擁塞控制機(jī)制
發(fā)布時(shí)間:2019-02-12 09:54
【摘要】:針對(duì)現(xiàn)有的組播擁塞控制機(jī)制對(duì)接收端可用帶寬估計(jì)精度較低的問(wèn)題,提出了一種基于可用帶寬測(cè)量的分層組播擁塞控制機(jī)制ABM-LMCC。在分析了現(xiàn)有可用帶寬估計(jì)方法不足的基礎(chǔ)上,提出一種適用于組播的可用帶寬測(cè)量算法,并設(shè)計(jì)了分層組播擁塞控制機(jī)制的具體操作規(guī)程。通過(guò)調(diào)節(jié)組播數(shù)據(jù)包的發(fā)送間隔,使其呈現(xiàn)降速率的指數(shù)分布,從而實(shí)現(xiàn)各接收端對(duì)可用帶寬的準(zhǔn)確測(cè)量,并根據(jù)其測(cè)量值迅速調(diào)節(jié)期望速率,從而達(dá)到組播擁塞控制的目的。仿真表明,ABM-LMCC能夠有效避免擁塞,提高鏈路利用率,顯著降低丟包率,具有良好的響應(yīng)性、穩(wěn)定性。
[Abstract]:In order to solve the problem that the existing multicast congestion control mechanism has low accuracy in estimating the available bandwidth of the receiver, a layered multicast congestion control mechanism based on available bandwidth measurement (ABM-LMCC.) is proposed. Based on the analysis of the shortcomings of the existing available bandwidth estimation methods, an available bandwidth measurement algorithm for multicast is proposed, and the specific operation rules of the hierarchical multicast congestion control mechanism are designed. By adjusting the sending interval of multicast packets, the data packets present exponential distribution of decreasing rate, so as to realize the accurate measurement of available bandwidth at each receiving end, and adjust the expected rate rapidly according to the measured values, so as to achieve the purpose of multicast congestion control. Simulation results show that ABM-LMCC can effectively avoid congestion, improve link utilization, significantly reduce packet loss rate, and has good responsiveness and stability.
【作者單位】: 南京信息職業(yè)技術(shù)學(xué)院通信學(xué)院;
【基金】:南京信息職業(yè)技術(shù)學(xué)院科研基金項(xiàng)目(YKJ-12-021)
【分類號(hào)】:TP393.06
本文編號(hào):2420329
[Abstract]:In order to solve the problem that the existing multicast congestion control mechanism has low accuracy in estimating the available bandwidth of the receiver, a layered multicast congestion control mechanism based on available bandwidth measurement (ABM-LMCC.) is proposed. Based on the analysis of the shortcomings of the existing available bandwidth estimation methods, an available bandwidth measurement algorithm for multicast is proposed, and the specific operation rules of the hierarchical multicast congestion control mechanism are designed. By adjusting the sending interval of multicast packets, the data packets present exponential distribution of decreasing rate, so as to realize the accurate measurement of available bandwidth at each receiving end, and adjust the expected rate rapidly according to the measured values, so as to achieve the purpose of multicast congestion control. Simulation results show that ABM-LMCC can effectively avoid congestion, improve link utilization, significantly reduce packet loss rate, and has good responsiveness and stability.
【作者單位】: 南京信息職業(yè)技術(shù)學(xué)院通信學(xué)院;
【基金】:南京信息職業(yè)技術(shù)學(xué)院科研基金項(xiàng)目(YKJ-12-021)
【分類號(hào)】:TP393.06
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,本文編號(hào):2420329
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