多级网络模型中的延迟保证

Delay Guarantee for Multistage Network Model

在多级网络模型中,用(σ,,ρλ)调节器取代(σ,ρ)调节器,讨论了当进入网络的信息包的最大长度L大于零、信息流的速率函数R(t)为0或者C时,任一比特在多级网络模型中的延迟.证明了存在一个最优值(也是最小值)ρ*,当信息流平均速率ρ不大于ρ*时,任一比特的最大延迟比未调节时要大;而当ρ大于ρ*时,最大延迟比未调节时要小.

In multistage network model, with the （σ,ρ,γ） regulator instead of （σ,ρ） regulator, the delay of any data bit is analyzed, supposing L is bigger than zero and R（t） is either zero or ＂c＂, where L is the biggest length of the packet, R （t） is the rate function of traffic flows entering a network. It is shown that there exists an optimal （i. e. , minimum） ρ^ ＊ such that Dr ≥ D for p^ ＊ 〉 p and Dr≤D for p≥p^＊ , where D, and D are the worst-case delay bounds regulated by （σ,ρ,γ） regulator and by （σ,ρ） regulator respectively.