An analysis of delay of small IP packets in cellular data networks

Abstract

The delay characteristics of small IP packets in cellular data networks is investigated through the analysis of the SR-ARQ mechanism. The delay of the radio link controller is taken as the primary delay in the radio access network and all core networking delays are neglected. Results indicate that the average delay may be a misleading measure of system performance for conversational traffic such as Voice over IP packets.

Delay analysis of small IP packets in GPRS RLC layer

“…Regardless of these justifiable differences, by comparing fig.2 and fig.3 we can confirm that the statistical analysis presented in this paper strengthens the point made in [10,11] regarding the dependency of shape of the delay distribution on packet size. Thus at a constant channel condition the shape of the delay distribution would change from that of exponential distribution to normal distribution as the packet size increases.…”

“…The main purpose of this paper was to present a statistical mean of analysis to find the deviance of the shape of delay distribution with packet size, a phenomenon which was reported in [10,11]. In addition to the fact that the results of this analysis corroborate the above mentioned phenomenon, comparison of the results of the analysis with that presented in literature validates the correctness of the methodology presented in this paper.…”

“…Moreover it assumes that each of these transmissions would experience a delay of 1, 9 and 14 block period of delay respectively. On the other hand dependence of the PDF on channel quality, though it was not discussed, is hinted by the simulation results presented in [10].…”

“…Length of the small IP packet N ≤5[10] • Size of the window (W) is always larger than length of the data packet (W≥N).…”