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研究主动队列管理技术的RED和REM的丢包率和队长稳定性关系;基于启发式丢包处理方法,提出一种采用启发式失效率函数计算丢弃概率函数以减小丢包率的拥塞控制算法(HFA)。在轻量级负载情况下,该算法性能和自适应随机早期检测与随机指数标记相当;而在重量级负载情况下,不仅丢包率的均值和方差小,而且瞬时队长在设定的目标范围,可以明显地减小队列长度的波动性。在NS-2上进行的大量实验结果表明,所提算法具有瞬时队长控制在预期范围、抖动性小、丢包率及丢包率方差小等优点。
The paper studies the relationship between packet loss rate and captain stability of RED and REM in active queue management technology. Based on the heuristic packet loss processing, a congestion control algorithm is proposed to reduce the packet loss by using the heuristic failure rate function (HFA). Under the condition of light load, the performance of the algorithm and adaptive random early detection are comparable to those of the random exponent index. In the case of heavy load, not only the mean and variance of the packet loss rate are small, but also the instantaneous captain is within the set target range , Can significantly reduce the volatility of queue length. A large number of experimental results on NS-2 show that the proposed algorithm has the advantages of instantaneous captain control in the expected range, small jitter, small packet loss rate and small packet loss variance.