Analysis of the delay performance of n-ARQ system with vacations
Lilt Cun-ming · Journal of systems engineering · 2008
In this paper the transmission scheme of go-back-n automatic repeat request protocol (n- ARQ) is analyzed firstly,then a queuing model of n-ARQ scheme with vacations is established sen- tentiously and availably by using the equivalent service delay method,the expressions of system' s main performance measures,such as system' s average waiting time,average service delay time and normalized maximum throughput and so on,are gained and the model of optimal sliding window length and optimal data packet length are given.At last,the influence of correct ratio of the data packet' s transmission,sliding windows length and data packet length on system delay is analized by numerical simulation.Also,the existence and determinacy of the optimal sliding window length,da- ta packet length and their alteration rules are resolved and validated by numerical simulations.