【摘要】 网络链路容量和可用带宽参数估计是互联网领域的重要课题。该文将统计信号检测及估计方法应用于此估计问题,提出了扩展自诱导拥塞原理,实现了网络链路容量/可用带宽的联合估计算法,开发了实际测量工具pathWave。NS-2仿真平台下的测量结果验证了扩展自诱导拥塞原理的有效性。Schooner实验床环境下的实验仿真研究表明,与其他传统估计方法以及测量工具相比,pathWave以较低的测量负载和较短的测量时间,有效提高网络链路容量/可用带宽的联合估计精度。更多还原

【Abstract】 Network link capacity(lc) and available bandwidth(av-bw) are of great significance for various network domains.In this paper,the estimation of network lc/av-bw was modeled as the problem of stochastic signal state detection and signal parameter estimation.An approach to measuring network lc/av-bw was developed based on the statistical signal processing theory using the extended self-induced congestion principle.The affectivity of lc/av-bw measurement tool,pathWave,was validated in the NS-2 simulation environment.The pathWave performance was evaluated in a Schooner test-bed by comparing with other representative tools.Analytical,simulative,and experimental results show that the method based on statistical signal processing is more efficient for the combined estimation of lc/av-bw.更多还原