  For delay analysis of packet delivery over a wireless link, several novel
ideas are introduced. One is to construct an equivalent $G/G/1$ non-lossy
queueing model to ease the analysis, enabled by exploiting empirical models of
packet error rate, packet service time and packet loss rate obtained from
measurement. The second is to exploit a classical queueing theory result to
approximate the mean delay. For estimating the delay distribution, the newly
developed stochastic network calculus (SNC) theory is made use of, forming the
third idea. To enable this SNC based analysis, a stochastic service curve
characterization of the link is introduced, relying on a packet service time
model obtained from the empirical models. The focused link is a 802.15.4
wireless link. Extensive experimental investigation under a wide range of
settings was conducted. The proposed ideas are validated with the experiment
results. The validation confirms that the proposed approaches, integrating both
empirical and analytical modes, are effective for service modeling and delay
analysis. This suggests an integrated approach, now found previously, for
quantitative understanding of the delay performance of packet delivery over a
wireless link.
